drivers/scsi/lpfc/lpfc_init.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2017-2020 Broadcom. All Rights Reserved. The term *
   5  * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.  *
   6  * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
   7  * EMULEX and SLI are trademarks of Emulex.                        *
   8  * www.broadcom.com                                                *
   9  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
  10  *                                                                 *
  11  * This program is free software; you can redistribute it and/or   *
  12  * modify it under the terms of version 2 of the GNU General       *
  13  * Public License as published by the Free Software Foundation.    *
  14  * This program is distributed in the hope that it will be useful. *
  15  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  16  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  17  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  18  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  19  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  20  * more details, a copy of which can be found in the file COPYING  *
  21  * included with this package.                                     *
  22  *******************************************************************/
  23
  24 #include <linux/blkdev.h>
  25 #include <linux/delay.h>
  26 #include <linux/dma-mapping.h>
  27 #include <linux/idr.h>
  28 #include <linux/interrupt.h>
  29 #include <linux/module.h>
  30 #include <linux/kthread.h>
  31 #include <linux/pci.h>
  32 #include <linux/spinlock.h>
  33 #include <linux/ctype.h>
  34 #include <linux/aer.h>
  35 #include <linux/slab.h>
  36 #include <linux/firmware.h>
  37 #include <linux/miscdevice.h>
  38 #include <linux/percpu.h>
  39 #include <linux/msi.h>
  40 #include <linux/irq.h>
  41 #include <linux/bitops.h>
  42 #include <linux/crash_dump.h>
  43 #include <linux/cpu.h>
  44 #include <linux/cpuhotplug.h>
  45
  46 #include <scsi/scsi.h>
  47 #include <scsi/scsi_device.h>
  48 #include <scsi/scsi_host.h>
  49 #include <scsi/scsi_transport_fc.h>
  50 #include <scsi/scsi_tcq.h>
  51 #include <scsi/fc/fc_fs.h>
  52
  53 #include "lpfc_hw4.h"
  54 #include "lpfc_hw.h"
  55 #include "lpfc_sli.h"
  56 #include "lpfc_sli4.h"
  57 #include "lpfc_nl.h"
  58 #include "lpfc_disc.h"
  59 #include "lpfc.h"
  60 #include "lpfc_scsi.h"
  61 #include "lpfc_nvme.h"
  62 #include "lpfc_logmsg.h"
  63 #include "lpfc_crtn.h"
  64 #include "lpfc_vport.h"
  65 #include "lpfc_version.h"
  66 #include "lpfc_ids.h"
  67
  68 static enum cpuhp_state lpfc_cpuhp_state;
  69 /* Used when mapping IRQ vectors in a driver centric manner */
  70 static uint32_t lpfc_present_cpu;
  71
  72 static void __lpfc_cpuhp_remove(struct lpfc_hba *phba);
  73 static void lpfc_cpuhp_remove(struct lpfc_hba *phba);
  74 static void lpfc_cpuhp_add(struct lpfc_hba *phba);
  75 static void lpfc_get_hba_model_desc(struct lpfc_hba *, uint8_t *, uint8_t *);
  76 static int lpfc_post_rcv_buf(struct lpfc_hba *);
  77 static int lpfc_sli4_queue_verify(struct lpfc_hba *);
  78 static int lpfc_create_bootstrap_mbox(struct lpfc_hba *);
  79 static int lpfc_setup_endian_order(struct lpfc_hba *);
  80 static void lpfc_destroy_bootstrap_mbox(struct lpfc_hba *);
  81 static void lpfc_free_els_sgl_list(struct lpfc_hba *);
  82 static void lpfc_free_nvmet_sgl_list(struct lpfc_hba *);
  83 static void lpfc_init_sgl_list(struct lpfc_hba *);
  84 static int lpfc_init_active_sgl_array(struct lpfc_hba *);
  85 static void lpfc_free_active_sgl(struct lpfc_hba *);
  86 static int lpfc_hba_down_post_s3(struct lpfc_hba *phba);
  87 static int lpfc_hba_down_post_s4(struct lpfc_hba *phba);
  88 static int lpfc_sli4_cq_event_pool_create(struct lpfc_hba *);
  89 static void lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *);
  90 static void lpfc_sli4_cq_event_release_all(struct lpfc_hba *);
  91 static void lpfc_sli4_disable_intr(struct lpfc_hba *);
  92 static uint32_t lpfc_sli4_enable_intr(struct lpfc_hba *, uint32_t);
  93 static void lpfc_sli4_oas_verify(struct lpfc_hba *phba);
  94 static uint16_t lpfc_find_cpu_handle(struct lpfc_hba *, uint16_t, int);
  95 static void lpfc_setup_bg(struct lpfc_hba *, struct Scsi_Host *);
  96
  97 static struct scsi_transport_template *lpfc_transport_template = NULL;
  98 static struct scsi_transport_template *lpfc_vport_transport_template = NULL;
  99 static DEFINE_IDR(lpfc_hba_index);
 100 #define LPFC_NVMET_BUF_POST 254
 101
 102 /**
 103  * lpfc_config_port_prep - Perform lpfc initialization prior to config port
 104  * @phba: pointer to lpfc hba data structure.
 105  *
 106  * This routine will do LPFC initialization prior to issuing the CONFIG_PORT
 107  * mailbox command. It retrieves the revision information from the HBA and
 108  * collects the Vital Product Data (VPD) about the HBA for preparing the
 109  * configuration of the HBA.
 110  *
 111  * Return codes:
 112  *   0 - success.
 113  *   -ERESTART - requests the SLI layer to reset the HBA and try again.
 114  *   Any other value - indicates an error.
 115  **/
 116 int
 117 lpfc_config_port_prep(struct lpfc_hba *phba)
 118 {
 119         lpfc_vpd_t *vp = &phba->vpd;
 120         int i = 0, rc;
 121         LPFC_MBOXQ_t *pmb;
 122         MAILBOX_t *mb;
 123         char *lpfc_vpd_data = NULL;
 124         uint16_t offset = 0;
 125         static char licensed[56] =
 126                     "key unlock for use with gnu public licensed code only\0";
 127         static int init_key = 1;
 128
 129         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 130         if (!pmb) {
 131                 phba->link_state = LPFC_HBA_ERROR;
 132                 return -ENOMEM;
 133         }
 134
 135         mb = &pmb->u.mb;
 136         phba->link_state = LPFC_INIT_MBX_CMDS;
 137
 138         if (lpfc_is_LC_HBA(phba->pcidev->device)) {
 139                 if (init_key) {
 140                         uint32_t *ptext = (uint32_t *) licensed;
 141
 142                         for (i = 0; i < 56; i += sizeof (uint32_t), ptext++)
 143                                 *ptext = cpu_to_be32(*ptext);
 144                         init_key = 0;
 145                 }
 146
 147                 lpfc_read_nv(phba, pmb);
 148                 memset((char*)mb->un.varRDnvp.rsvd3, 0,
 149                         sizeof (mb->un.varRDnvp.rsvd3));
 150                 memcpy((char*)mb->un.varRDnvp.rsvd3, licensed,
 151                          sizeof (licensed));
 152
 153                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 154
 155                 if (rc != MBX_SUCCESS) {
 156                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 157                                         "0324 Config Port initialization "
 158                                         "error, mbxCmd x%x READ_NVPARM, "
 159                                         "mbxStatus x%x\n",
 160                                         mb->mbxCommand, mb->mbxStatus);
 161                         mempool_free(pmb, phba->mbox_mem_pool);
 162                         return -ERESTART;
 163                 }
 164                 memcpy(phba->wwnn, (char *)mb->un.varRDnvp.nodename,
 165                        sizeof(phba->wwnn));
 166                 memcpy(phba->wwpn, (char *)mb->un.varRDnvp.portname,
 167                        sizeof(phba->wwpn));
 168         }
 169
 170         /*
 171          * Clear all option bits except LPFC_SLI3_BG_ENABLED,
 172          * which was already set in lpfc_get_cfgparam()
 173          */
 174         phba->sli3_options &= (uint32_t)LPFC_SLI3_BG_ENABLED;
 175
 176         /* Setup and issue mailbox READ REV command */
 177         lpfc_read_rev(phba, pmb);
 178         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 179         if (rc != MBX_SUCCESS) {
 180                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 181                                 "0439 Adapter failed to init, mbxCmd x%x "
 182                                 "READ_REV, mbxStatus x%x\n",
 183                                 mb->mbxCommand, mb->mbxStatus);
 184                 mempool_free( pmb, phba->mbox_mem_pool);
 185                 return -ERESTART;
 186         }
 187
 188
 189         /*
 190          * The value of rr must be 1 since the driver set the cv field to 1.
 191          * This setting requires the FW to set all revision fields.
 192          */
 193         if (mb->un.varRdRev.rr == 0) {
 194                 vp->rev.rBit = 0;
 195                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 196                                 "0440 Adapter failed to init, READ_REV has "
 197                                 "missing revision information.\n");
 198                 mempool_free(pmb, phba->mbox_mem_pool);
 199                 return -ERESTART;
 200         }
 201
 202         if (phba->sli_rev == 3 && !mb->un.varRdRev.v3rsp) {
 203                 mempool_free(pmb, phba->mbox_mem_pool);
 204                 return -EINVAL;
 205         }
 206
 207         /* Save information as VPD data */
 208         vp->rev.rBit = 1;
 209         memcpy(&vp->sli3Feat, &mb->un.varRdRev.sli3Feat, sizeof(uint32_t));
 210         vp->rev.sli1FwRev = mb->un.varRdRev.sli1FwRev;
 211         memcpy(vp->rev.sli1FwName, (char*) mb->un.varRdRev.sli1FwName, 16);
 212         vp->rev.sli2FwRev = mb->un.varRdRev.sli2FwRev;
 213         memcpy(vp->rev.sli2FwName, (char *) mb->un.varRdRev.sli2FwName, 16);
 214         vp->rev.biuRev = mb->un.varRdRev.biuRev;
 215         vp->rev.smRev = mb->un.varRdRev.smRev;
 216         vp->rev.smFwRev = mb->un.varRdRev.un.smFwRev;
 217         vp->rev.endecRev = mb->un.varRdRev.endecRev;
 218         vp->rev.fcphHigh = mb->un.varRdRev.fcphHigh;
 219         vp->rev.fcphLow = mb->un.varRdRev.fcphLow;
 220         vp->rev.feaLevelHigh = mb->un.varRdRev.feaLevelHigh;
 221         vp->rev.feaLevelLow = mb->un.varRdRev.feaLevelLow;
 222         vp->rev.postKernRev = mb->un.varRdRev.postKernRev;
 223         vp->rev.opFwRev = mb->un.varRdRev.opFwRev;
 224
 225         /* If the sli feature level is less then 9, we must
 226          * tear down all RPIs and VPIs on link down if NPIV
 227          * is enabled.
 228          */
 229         if (vp->rev.feaLevelHigh < 9)
 230                 phba->sli3_options |= LPFC_SLI3_VPORT_TEARDOWN;
 231
 232         if (lpfc_is_LC_HBA(phba->pcidev->device))
 233                 memcpy(phba->RandomData, (char *)&mb->un.varWords[24],
 234                                                 sizeof (phba->RandomData));
 235
 236         /* Get adapter VPD information */
 237         lpfc_vpd_data = kmalloc(DMP_VPD_SIZE, GFP_KERNEL);
 238         if (!lpfc_vpd_data)
 239                 goto out_free_mbox;
 240         do {
 241                 lpfc_dump_mem(phba, pmb, offset, DMP_REGION_VPD);
 242                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 243
 244                 if (rc != MBX_SUCCESS) {
 245                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
 246                                         "0441 VPD not present on adapter, "
 247                                         "mbxCmd x%x DUMP VPD, mbxStatus x%x\n",
 248                                         mb->mbxCommand, mb->mbxStatus);
 249                         mb->un.varDmp.word_cnt = 0;
 250                 }
 251                 /* dump mem may return a zero when finished or we got a
 252                  * mailbox error, either way we are done.
 253                  */
 254                 if (mb->un.varDmp.word_cnt == 0)
 255                         break;
 256
 257                 i =  mb->un.varDmp.word_cnt * sizeof(uint32_t);
 258                 if (offset + i >  DMP_VPD_SIZE)
 259                         i =  DMP_VPD_SIZE - offset;
 260                 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
 261                                       lpfc_vpd_data  + offset, i);
 262                 offset += i;
 263         } while (offset < DMP_VPD_SIZE);
 264
 265         lpfc_parse_vpd(phba, lpfc_vpd_data, offset);
 266
 267         kfree(lpfc_vpd_data);
 268 out_free_mbox:
 269         mempool_free(pmb, phba->mbox_mem_pool);
 270         return 0;
 271 }
 272
 273 /**
 274  * lpfc_config_async_cmpl - Completion handler for config async event mbox cmd
 275  * @phba: pointer to lpfc hba data structure.
 276  * @pmboxq: pointer to the driver internal queue element for mailbox command.
 277  *
 278  * This is the completion handler for driver's configuring asynchronous event
 279  * mailbox command to the device. If the mailbox command returns successfully,
 280  * it will set internal async event support flag to 1; otherwise, it will
 281  * set internal async event support flag to 0.
 282  **/
 283 static void
 284 lpfc_config_async_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
 285 {
 286         if (pmboxq->u.mb.mbxStatus == MBX_SUCCESS)
 287                 phba->temp_sensor_support = 1;
 288         else
 289                 phba->temp_sensor_support = 0;
 290         mempool_free(pmboxq, phba->mbox_mem_pool);
 291         return;
 292 }
 293
 294 /**
 295  * lpfc_dump_wakeup_param_cmpl - dump memory mailbox command completion handler
 296  * @phba: pointer to lpfc hba data structure.
 297  * @pmboxq: pointer to the driver internal queue element for mailbox command.
 298  *
 299  * This is the completion handler for dump mailbox command for getting
 300  * wake up parameters. When this command complete, the response contain
 301  * Option rom version of the HBA. This function translate the version number
 302  * into a human readable string and store it in OptionROMVersion.
 303  **/
 304 static void
 305 lpfc_dump_wakeup_param_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
 306 {
 307         struct prog_id *prg;
 308         uint32_t prog_id_word;
 309         char dist = ' ';
 310         /* character array used for decoding dist type. */
 311         char dist_char[] = "nabx";
 312
 313         if (pmboxq->u.mb.mbxStatus != MBX_SUCCESS) {
 314                 mempool_free(pmboxq, phba->mbox_mem_pool);
 315                 return;
 316         }
 317
 318         prg = (struct prog_id *) &prog_id_word;
 319
 320         /* word 7 contain option rom version */
 321         prog_id_word = pmboxq->u.mb.un.varWords[7];
 322
 323         /* Decode the Option rom version word to a readable string */
 324         if (prg->dist < 4)
 325                 dist = dist_char[prg->dist];
 326
 327         if ((prg->dist == 3) && (prg->num == 0))
 328                 snprintf(phba->OptionROMVersion, 32, "%d.%d%d",
 329                         prg->ver, prg->rev, prg->lev);
 330         else
 331                 snprintf(phba->OptionROMVersion, 32, "%d.%d%d%c%d",
 332                         prg->ver, prg->rev, prg->lev,
 333                         dist, prg->num);
 334         mempool_free(pmboxq, phba->mbox_mem_pool);
 335         return;
 336 }
 337
 338 /**
 339  * lpfc_update_vport_wwn - Updates the fc_nodename, fc_portname,
 340  *      cfg_soft_wwnn, cfg_soft_wwpn
 341  * @vport: pointer to lpfc vport data structure.
 342  *
 343  *
 344  * Return codes
 345  *   None.
 346  **/
 347 void
 348 lpfc_update_vport_wwn(struct lpfc_vport *vport)
 349 {
 350         uint8_t vvvl = vport->fc_sparam.cmn.valid_vendor_ver_level;
 351         u32 *fawwpn_key = (u32 *)&vport->fc_sparam.un.vendorVersion[0];
 352
 353         /* If the soft name exists then update it using the service params */
 354         if (vport->phba->cfg_soft_wwnn)
 355                 u64_to_wwn(vport->phba->cfg_soft_wwnn,
 356                            vport->fc_sparam.nodeName.u.wwn);
 357         if (vport->phba->cfg_soft_wwpn)
 358                 u64_to_wwn(vport->phba->cfg_soft_wwpn,
 359                            vport->fc_sparam.portName.u.wwn);
 360
 361         /*
 362          * If the name is empty or there exists a soft name
 363          * then copy the service params name, otherwise use the fc name
 364          */
 365         if (vport->fc_nodename.u.wwn[0] == 0 || vport->phba->cfg_soft_wwnn)
 366                 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
 367                         sizeof(struct lpfc_name));
 368         else
 369                 memcpy(&vport->fc_sparam.nodeName, &vport->fc_nodename,
 370                         sizeof(struct lpfc_name));
 371
 372         /*
 373          * If the port name has changed, then set the Param changes flag
 374          * to unreg the login
 375          */
 376         if (vport->fc_portname.u.wwn[0] != 0 &&
 377                 memcmp(&vport->fc_portname, &vport->fc_sparam.portName,
 378                         sizeof(struct lpfc_name)))
 379                 vport->vport_flag |= FAWWPN_PARAM_CHG;
 380
 381         if (vport->fc_portname.u.wwn[0] == 0 ||
 382             vport->phba->cfg_soft_wwpn ||
 383             (vvvl == 1 && cpu_to_be32(*fawwpn_key) == FAPWWN_KEY_VENDOR) ||
 384             vport->vport_flag & FAWWPN_SET) {
 385                 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
 386                         sizeof(struct lpfc_name));
 387                 vport->vport_flag &= ~FAWWPN_SET;
 388                 if (vvvl == 1 && cpu_to_be32(*fawwpn_key) == FAPWWN_KEY_VENDOR)
 389                         vport->vport_flag |= FAWWPN_SET;
 390         }
 391         else
 392                 memcpy(&vport->fc_sparam.portName, &vport->fc_portname,
 393                         sizeof(struct lpfc_name));
 394 }
 395
 396 /**
 397  * lpfc_config_port_post - Perform lpfc initialization after config port
 398  * @phba: pointer to lpfc hba data structure.
 399  *
 400  * This routine will do LPFC initialization after the CONFIG_PORT mailbox
 401  * command call. It performs all internal resource and state setups on the
 402  * port: post IOCB buffers, enable appropriate host interrupt attentions,
 403  * ELS ring timers, etc.
 404  *
 405  * Return codes
 406  *   0 - success.
 407  *   Any other value - error.
 408  **/
 409 int
 410 lpfc_config_port_post(struct lpfc_hba *phba)
 411 {
 412         struct lpfc_vport *vport = phba->pport;
 413         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 414         LPFC_MBOXQ_t *pmb;
 415         MAILBOX_t *mb;
 416         struct lpfc_dmabuf *mp;
 417         struct lpfc_sli *psli = &phba->sli;
 418         uint32_t status, timeout;
 419         int i, j;
 420         int rc;
 421
 422         spin_lock_irq(&phba->hbalock);
 423         /*
 424          * If the Config port completed correctly the HBA is not
 425          * over heated any more.
 426          */
 427         if (phba->over_temp_state == HBA_OVER_TEMP)
 428                 phba->over_temp_state = HBA_NORMAL_TEMP;
 429         spin_unlock_irq(&phba->hbalock);
 430
 431         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 432         if (!pmb) {
 433                 phba->link_state = LPFC_HBA_ERROR;
 434                 return -ENOMEM;
 435         }
 436         mb = &pmb->u.mb;
 437
 438         /* Get login parameters for NID.  */
 439         rc = lpfc_read_sparam(phba, pmb, 0);
 440         if (rc) {
 441                 mempool_free(pmb, phba->mbox_mem_pool);
 442                 return -ENOMEM;
 443         }
 444
 445         pmb->vport = vport;
 446         if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
 447                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 448                                 "0448 Adapter failed init, mbxCmd x%x "
 449                                 "READ_SPARM mbxStatus x%x\n",
 450                                 mb->mbxCommand, mb->mbxStatus);
 451                 phba->link_state = LPFC_HBA_ERROR;
 452                 mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
 453                 mempool_free(pmb, phba->mbox_mem_pool);
 454                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 455                 kfree(mp);
 456                 return -EIO;
 457         }
 458
 459         mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
 460
 461         memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
 462         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 463         kfree(mp);
 464         pmb->ctx_buf = NULL;
 465         lpfc_update_vport_wwn(vport);
 466
 467         /* Update the fc_host data structures with new wwn. */
 468         fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
 469         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
 470         fc_host_max_npiv_vports(shost) = phba->max_vpi;
 471
 472         /* If no serial number in VPD data, use low 6 bytes of WWNN */
 473         /* This should be consolidated into parse_vpd ? - mr */
 474         if (phba->SerialNumber[0] == 0) {
 475                 uint8_t *outptr;
 476
 477                 outptr = &vport->fc_nodename.u.s.IEEE[0];
 478                 for (i = 0; i < 12; i++) {
 479                         status = *outptr++;
 480                         j = ((status & 0xf0) >> 4);
 481                         if (j <= 9)
 482                                 phba->SerialNumber[i] =
 483                                     (char)((uint8_t) 0x30 + (uint8_t) j);
 484                         else
 485                                 phba->SerialNumber[i] =
 486                                     (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
 487                         i++;
 488                         j = (status & 0xf);
 489                         if (j <= 9)
 490                                 phba->SerialNumber[i] =
 491                                     (char)((uint8_t) 0x30 + (uint8_t) j);
 492                         else
 493                                 phba->SerialNumber[i] =
 494                                     (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
 495                 }
 496         }
 497
 498         lpfc_read_config(phba, pmb);
 499         pmb->vport = vport;
 500         if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
 501                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 502                                 "0453 Adapter failed to init, mbxCmd x%x "
 503                                 "READ_CONFIG, mbxStatus x%x\n",
 504                                 mb->mbxCommand, mb->mbxStatus);
 505                 phba->link_state = LPFC_HBA_ERROR;
 506                 mempool_free( pmb, phba->mbox_mem_pool);
 507                 return -EIO;
 508         }
 509
 510         /* Check if the port is disabled */
 511         lpfc_sli_read_link_ste(phba);
 512
 513         /* Reset the DFT_HBA_Q_DEPTH to the max xri  */
 514         if (phba->cfg_hba_queue_depth > mb->un.varRdConfig.max_xri) {
 515                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
 516                                 "3359 HBA queue depth changed from %d to %d\n",
 517                                 phba->cfg_hba_queue_depth,
 518                                 mb->un.varRdConfig.max_xri);
 519                 phba->cfg_hba_queue_depth = mb->un.varRdConfig.max_xri;
 520         }
 521
 522         phba->lmt = mb->un.varRdConfig.lmt;
 523
 524         /* Get the default values for Model Name and Description */
 525         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
 526
 527         phba->link_state = LPFC_LINK_DOWN;
 528
 529         /* Only process IOCBs on ELS ring till hba_state is READY */
 530         if (psli->sli3_ring[LPFC_EXTRA_RING].sli.sli3.cmdringaddr)
 531                 psli->sli3_ring[LPFC_EXTRA_RING].flag |= LPFC_STOP_IOCB_EVENT;
 532         if (psli->sli3_ring[LPFC_FCP_RING].sli.sli3.cmdringaddr)
 533                 psli->sli3_ring[LPFC_FCP_RING].flag |= LPFC_STOP_IOCB_EVENT;
 534
 535         /* Post receive buffers for desired rings */
 536         if (phba->sli_rev != 3)
 537                 lpfc_post_rcv_buf(phba);
 538
 539         /*
 540          * Configure HBA MSI-X attention conditions to messages if MSI-X mode
 541          */
 542         if (phba->intr_type == MSIX) {
 543                 rc = lpfc_config_msi(phba, pmb);
 544                 if (rc) {
 545                         mempool_free(pmb, phba->mbox_mem_pool);
 546                         return -EIO;
 547                 }
 548                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 549                 if (rc != MBX_SUCCESS) {
 550                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 551                                         "0352 Config MSI mailbox command "
 552                                         "failed, mbxCmd x%x, mbxStatus x%x\n",
 553                                         pmb->u.mb.mbxCommand,
 554                                         pmb->u.mb.mbxStatus);
 555                         mempool_free(pmb, phba->mbox_mem_pool);
 556                         return -EIO;
 557                 }
 558         }
 559
 560         spin_lock_irq(&phba->hbalock);
 561         /* Initialize ERATT handling flag */
 562         phba->hba_flag &= ~HBA_ERATT_HANDLED;
 563
 564         /* Enable appropriate host interrupts */
 565         if (lpfc_readl(phba->HCregaddr, &status)) {
 566                 spin_unlock_irq(&phba->hbalock);
 567                 return -EIO;
 568         }
 569         status |= HC_MBINT_ENA | HC_ERINT_ENA | HC_LAINT_ENA;
 570         if (psli->num_rings > 0)
 571                 status |= HC_R0INT_ENA;
 572         if (psli->num_rings > 1)
 573                 status |= HC_R1INT_ENA;
 574         if (psli->num_rings > 2)
 575                 status |= HC_R2INT_ENA;
 576         if (psli->num_rings > 3)
 577                 status |= HC_R3INT_ENA;
 578
 579         if ((phba->cfg_poll & ENABLE_FCP_RING_POLLING) &&
 580             (phba->cfg_poll & DISABLE_FCP_RING_INT))
 581                 status &= ~(HC_R0INT_ENA);
 582
 583         writel(status, phba->HCregaddr);
 584         readl(phba->HCregaddr); /* flush */
 585         spin_unlock_irq(&phba->hbalock);
 586
 587         /* Set up ring-0 (ELS) timer */
 588         timeout = phba->fc_ratov * 2;
 589         mod_timer(&vport->els_tmofunc,
 590                   jiffies + msecs_to_jiffies(1000 * timeout));
 591         /* Set up heart beat (HB) timer */
 592         mod_timer(&phba->hb_tmofunc,
 593                   jiffies + msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));
 594         phba->hb_outstanding = 0;
 595         phba->last_completion_time = jiffies;
 596         /* Set up error attention (ERATT) polling timer */
 597         mod_timer(&phba->eratt_poll,
 598                   jiffies + msecs_to_jiffies(1000 * phba->eratt_poll_interval));
 599
 600         if (phba->hba_flag & LINK_DISABLED) {
 601                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 602                                 "2598 Adapter Link is disabled.\n");
 603                 lpfc_down_link(phba, pmb);
 604                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 605                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 606                 if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
 607                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 608                                         "2599 Adapter failed to issue DOWN_LINK"
 609                                         " mbox command rc 0x%x\n", rc);
 610
 611                         mempool_free(pmb, phba->mbox_mem_pool);
 612                         return -EIO;
 613                 }
 614         } else if (phba->cfg_suppress_link_up == LPFC_INITIALIZE_LINK) {
 615                 mempool_free(pmb, phba->mbox_mem_pool);
 616                 rc = phba->lpfc_hba_init_link(phba, MBX_NOWAIT);
 617                 if (rc)
 618                         return rc;
 619         }
 620         /* MBOX buffer will be freed in mbox compl */
 621         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 622         if (!pmb) {
 623                 phba->link_state = LPFC_HBA_ERROR;
 624                 return -ENOMEM;
 625         }
 626
 627         lpfc_config_async(phba, pmb, LPFC_ELS_RING);
 628         pmb->mbox_cmpl = lpfc_config_async_cmpl;
 629         pmb->vport = phba->pport;
 630         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 631
 632         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
 633                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 634                                 "0456 Adapter failed to issue "
 635                                 "ASYNCEVT_ENABLE mbox status x%x\n",
 636                                 rc);
 637                 mempool_free(pmb, phba->mbox_mem_pool);
 638         }
 639
 640         /* Get Option rom version */
 641         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 642         if (!pmb) {
 643                 phba->link_state = LPFC_HBA_ERROR;
 644                 return -ENOMEM;
 645         }
 646
 647         lpfc_dump_wakeup_param(phba, pmb);
 648         pmb->mbox_cmpl = lpfc_dump_wakeup_param_cmpl;
 649         pmb->vport = phba->pport;
 650         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 651
 652         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
 653                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 654                                 "0435 Adapter failed "
 655                                 "to get Option ROM version status x%x\n", rc);
 656                 mempool_free(pmb, phba->mbox_mem_pool);
 657         }
 658
 659         return 0;
 660 }
 661
 662 /**
 663  * lpfc_hba_init_link - Initialize the FC link
 664  * @phba: pointer to lpfc hba data structure.
 665  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
 666  *
 667  * This routine will issue the INIT_LINK mailbox command call.
 668  * It is available to other drivers through the lpfc_hba data
 669  * structure for use as a delayed link up mechanism with the
 670  * module parameter lpfc_suppress_link_up.
 671  *
 672  * Return code
 673  *              0 - success
 674  *              Any other value - error
 675  **/
 676 static int
 677 lpfc_hba_init_link(struct lpfc_hba *phba, uint32_t flag)
 678 {
 679         return lpfc_hba_init_link_fc_topology(phba, phba->cfg_topology, flag);
 680 }
 681
 682 /**
 683  * lpfc_hba_init_link_fc_topology - Initialize FC link with desired topology
 684  * @phba: pointer to lpfc hba data structure.
 685  * @fc_topology: desired fc topology.
 686  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
 687  *
 688  * This routine will issue the INIT_LINK mailbox command call.
 689  * It is available to other drivers through the lpfc_hba data
 690  * structure for use as a delayed link up mechanism with the
 691  * module parameter lpfc_suppress_link_up.
 692  *
 693  * Return code
 694  *              0 - success
 695  *              Any other value - error
 696  **/
 697 int
 698 lpfc_hba_init_link_fc_topology(struct lpfc_hba *phba, uint32_t fc_topology,
 699                                uint32_t flag)
 700 {
 701         struct lpfc_vport *vport = phba->pport;
 702         LPFC_MBOXQ_t *pmb;
 703         MAILBOX_t *mb;
 704         int rc;
 705
 706         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 707         if (!pmb) {
 708                 phba->link_state = LPFC_HBA_ERROR;
 709                 return -ENOMEM;
 710         }
 711         mb = &pmb->u.mb;
 712         pmb->vport = vport;
 713
 714         if ((phba->cfg_link_speed > LPFC_USER_LINK_SPEED_MAX) ||
 715             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_1G) &&
 716              !(phba->lmt & LMT_1Gb)) ||
 717             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_2G) &&
 718              !(phba->lmt & LMT_2Gb)) ||
 719             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_4G) &&
 720              !(phba->lmt & LMT_4Gb)) ||
 721             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_8G) &&
 722              !(phba->lmt & LMT_8Gb)) ||
 723             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_10G) &&
 724              !(phba->lmt & LMT_10Gb)) ||
 725             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_16G) &&
 726              !(phba->lmt & LMT_16Gb)) ||
 727             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_32G) &&
 728              !(phba->lmt & LMT_32Gb)) ||
 729             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_64G) &&
 730              !(phba->lmt & LMT_64Gb))) {
 731                 /* Reset link speed to auto */
 732                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 733                                 "1302 Invalid speed for this board:%d "
 734                                 "Reset link speed to auto.\n",
 735                                 phba->cfg_link_speed);
 736                         phba->cfg_link_speed = LPFC_USER_LINK_SPEED_AUTO;
 737         }
 738         lpfc_init_link(phba, pmb, fc_topology, phba->cfg_link_speed);
 739         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 740         if (phba->sli_rev < LPFC_SLI_REV4)
 741                 lpfc_set_loopback_flag(phba);
 742         rc = lpfc_sli_issue_mbox(phba, pmb, flag);
 743         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
 744                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 745                                 "0498 Adapter failed to init, mbxCmd x%x "
 746                                 "INIT_LINK, mbxStatus x%x\n",
 747                                 mb->mbxCommand, mb->mbxStatus);
 748                 if (phba->sli_rev <= LPFC_SLI_REV3) {
 749                         /* Clear all interrupt enable conditions */
 750                         writel(0, phba->HCregaddr);
 751                         readl(phba->HCregaddr); /* flush */
 752                         /* Clear all pending interrupts */
 753                         writel(0xffffffff, phba->HAregaddr);
 754                         readl(phba->HAregaddr); /* flush */
 755                 }
 756                 phba->link_state = LPFC_HBA_ERROR;
 757                 if (rc != MBX_BUSY || flag == MBX_POLL)
 758                         mempool_free(pmb, phba->mbox_mem_pool);
 759                 return -EIO;
 760         }
 761         phba->cfg_suppress_link_up = LPFC_INITIALIZE_LINK;
 762         if (flag == MBX_POLL)
 763                 mempool_free(pmb, phba->mbox_mem_pool);
 764
 765         return 0;
 766 }
 767
 768 /**
 769  * lpfc_hba_down_link - this routine downs the FC link
 770  * @phba: pointer to lpfc hba data structure.
 771  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
 772  *
 773  * This routine will issue the DOWN_LINK mailbox command call.
 774  * It is available to other drivers through the lpfc_hba data
 775  * structure for use to stop the link.
 776  *
 777  * Return code
 778  *              0 - success
 779  *              Any other value - error
 780  **/
 781 static int
 782 lpfc_hba_down_link(struct lpfc_hba *phba, uint32_t flag)
 783 {
 784         LPFC_MBOXQ_t *pmb;
 785         int rc;
 786
 787         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 788         if (!pmb) {
 789                 phba->link_state = LPFC_HBA_ERROR;
 790                 return -ENOMEM;
 791         }
 792
 793         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 794                         "0491 Adapter Link is disabled.\n");
 795         lpfc_down_link(phba, pmb);
 796         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 797         rc = lpfc_sli_issue_mbox(phba, pmb, flag);
 798         if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
 799                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 800                                 "2522 Adapter failed to issue DOWN_LINK"
 801                                 " mbox command rc 0x%x\n", rc);
 802
 803                 mempool_free(pmb, phba->mbox_mem_pool);
 804                 return -EIO;
 805         }
 806         if (flag == MBX_POLL)
 807                 mempool_free(pmb, phba->mbox_mem_pool);
 808
 809         return 0;
 810 }
 811
 812 /**
 813  * lpfc_hba_down_prep - Perform lpfc uninitialization prior to HBA reset
 814  * @phba: pointer to lpfc HBA data structure.
 815  *
 816  * This routine will do LPFC uninitialization before the HBA is reset when
 817  * bringing down the SLI Layer.
 818  *
 819  * Return codes
 820  *   0 - success.
 821  *   Any other value - error.
 822  **/
 823 int
 824 lpfc_hba_down_prep(struct lpfc_hba *phba)
 825 {
 826         struct lpfc_vport **vports;
 827         int i;
 828
 829         if (phba->sli_rev <= LPFC_SLI_REV3) {
 830                 /* Disable interrupts */
 831                 writel(0, phba->HCregaddr);
 832                 readl(phba->HCregaddr); /* flush */
 833         }
 834
 835         if (phba->pport->load_flag & FC_UNLOADING)
 836                 lpfc_cleanup_discovery_resources(phba->pport);
 837         else {
 838                 vports = lpfc_create_vport_work_array(phba);
 839                 if (vports != NULL)
 840                         for (i = 0; i <= phba->max_vports &&
 841                                 vports[i] != NULL; i++)
 842                                 lpfc_cleanup_discovery_resources(vports[i]);
 843                 lpfc_destroy_vport_work_array(phba, vports);
 844         }
 845         return 0;
 846 }
 847
 848 /**
 849  * lpfc_sli4_free_sp_events - Cleanup sp_queue_events to free
 850  * rspiocb which got deferred
 851  *
 852  * @phba: pointer to lpfc HBA data structure.
 853  *
 854  * This routine will cleanup completed slow path events after HBA is reset
 855  * when bringing down the SLI Layer.
 856  *
 857  *
 858  * Return codes
 859  *   void.
 860  **/
 861 static void
 862 lpfc_sli4_free_sp_events(struct lpfc_hba *phba)
 863 {
 864         struct lpfc_iocbq *rspiocbq;
 865         struct hbq_dmabuf *dmabuf;
 866         struct lpfc_cq_event *cq_event;
 867
 868         spin_lock_irq(&phba->hbalock);
 869         phba->hba_flag &= ~HBA_SP_QUEUE_EVT;
 870         spin_unlock_irq(&phba->hbalock);
 871
 872         while (!list_empty(&phba->sli4_hba.sp_queue_event)) {
 873                 /* Get the response iocb from the head of work queue */
 874                 spin_lock_irq(&phba->hbalock);
 875                 list_remove_head(&phba->sli4_hba.sp_queue_event,
 876                                  cq_event, struct lpfc_cq_event, list);
 877                 spin_unlock_irq(&phba->hbalock);
 878
 879                 switch (bf_get(lpfc_wcqe_c_code, &cq_event->cqe.wcqe_cmpl)) {
 880                 case CQE_CODE_COMPL_WQE:
 881                         rspiocbq = container_of(cq_event, struct lpfc_iocbq,
 882                                                  cq_event);
 883                         lpfc_sli_release_iocbq(phba, rspiocbq);
 884                         break;
 885                 case CQE_CODE_RECEIVE:
 886                 case CQE_CODE_RECEIVE_V1:
 887                         dmabuf = container_of(cq_event, struct hbq_dmabuf,
 888                                               cq_event);
 889                         lpfc_in_buf_free(phba, &dmabuf->dbuf);
 890                 }
 891         }
 892 }
 893
 894 /**
 895  * lpfc_hba_free_post_buf - Perform lpfc uninitialization after HBA reset
 896  * @phba: pointer to lpfc HBA data structure.
 897  *
 898  * This routine will cleanup posted ELS buffers after the HBA is reset
 899  * when bringing down the SLI Layer.
 900  *
 901  *
 902  * Return codes
 903  *   void.
 904  **/
 905 static void
 906 lpfc_hba_free_post_buf(struct lpfc_hba *phba)
 907 {
 908         struct lpfc_sli *psli = &phba->sli;
 909         struct lpfc_sli_ring *pring;
 910         struct lpfc_dmabuf *mp, *next_mp;
 911         LIST_HEAD(buflist);
 912         int count;
 913
 914         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)
 915                 lpfc_sli_hbqbuf_free_all(phba);
 916         else {
 917                 /* Cleanup preposted buffers on the ELS ring */
 918                 pring = &psli->sli3_ring[LPFC_ELS_RING];
 919                 spin_lock_irq(&phba->hbalock);
 920                 list_splice_init(&pring->postbufq, &buflist);
 921                 spin_unlock_irq(&phba->hbalock);
 922
 923                 count = 0;
 924                 list_for_each_entry_safe(mp, next_mp, &buflist, list) {
 925                         list_del(&mp->list);
 926                         count++;
 927                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 928                         kfree(mp);
 929                 }
 930
 931                 spin_lock_irq(&phba->hbalock);
 932                 pring->postbufq_cnt -= count;
 933                 spin_unlock_irq(&phba->hbalock);
 934         }
 935 }
 936
 937 /**
 938  * lpfc_hba_clean_txcmplq - Perform lpfc uninitialization after HBA reset
 939  * @phba: pointer to lpfc HBA data structure.
 940  *
 941  * This routine will cleanup the txcmplq after the HBA is reset when bringing
 942  * down the SLI Layer.
 943  *
 944  * Return codes
 945  *   void
 946  **/
 947 static void
 948 lpfc_hba_clean_txcmplq(struct lpfc_hba *phba)
 949 {
 950         struct lpfc_sli *psli = &phba->sli;
 951         struct lpfc_queue *qp = NULL;
 952         struct lpfc_sli_ring *pring;
 953         LIST_HEAD(completions);
 954         int i;
 955         struct lpfc_iocbq *piocb, *next_iocb;
 956
 957         if (phba->sli_rev != LPFC_SLI_REV4) {
 958                 for (i = 0; i < psli->num_rings; i++) {
 959                         pring = &psli->sli3_ring[i];
 960                         spin_lock_irq(&phba->hbalock);
 961                         /* At this point in time the HBA is either reset or DOA
 962                          * Nothing should be on txcmplq as it will
 963                          * NEVER complete.
 964                          */
 965                         list_splice_init(&pring->txcmplq, &completions);
 966                         pring->txcmplq_cnt = 0;
 967                         spin_unlock_irq(&phba->hbalock);
 968
 969                         lpfc_sli_abort_iocb_ring(phba, pring);
 970                 }
 971                 /* Cancel all the IOCBs from the completions list */
 972                 lpfc_sli_cancel_iocbs(phba, &completions,
 973                                       IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
 974                 return;
 975         }
 976         list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
 977                 pring = qp->pring;
 978                 if (!pring)
 979                         continue;
 980                 spin_lock_irq(&pring->ring_lock);
 981                 list_for_each_entry_safe(piocb, next_iocb,
 982                                          &pring->txcmplq, list)
 983                         piocb->iocb_flag &= ~LPFC_IO_ON_TXCMPLQ;
 984                 list_splice_init(&pring->txcmplq, &completions);
 985                 pring->txcmplq_cnt = 0;
 986                 spin_unlock_irq(&pring->ring_lock);
 987                 lpfc_sli_abort_iocb_ring(phba, pring);
 988         }
 989         /* Cancel all the IOCBs from the completions list */
 990         lpfc_sli_cancel_iocbs(phba, &completions,
 991                               IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
 992 }
 993
 994 /**
 995  * lpfc_hba_down_post_s3 - Perform lpfc uninitialization after HBA reset
 996  * @phba: pointer to lpfc HBA data structure.
 997  *
 998  * This routine will do uninitialization after the HBA is reset when bring
 999  * down the SLI Layer.
1000  *
1001  * Return codes
1002  *   0 - success.
1003  *   Any other value - error.
1004  **/
1005 static int
1006 lpfc_hba_down_post_s3(struct lpfc_hba *phba)
1007 {
1008         lpfc_hba_free_post_buf(phba);
1009         lpfc_hba_clean_txcmplq(phba);
1010         return 0;
1011 }
1012
1013 /**
1014  * lpfc_hba_down_post_s4 - Perform lpfc uninitialization after HBA reset
1015  * @phba: pointer to lpfc HBA data structure.
1016  *
1017  * This routine will do uninitialization after the HBA is reset when bring
1018  * down the SLI Layer.
1019  *
1020  * Return codes
1021  *   0 - success.
1022  *   Any other value - error.
1023  **/
1024 static int
1025 lpfc_hba_down_post_s4(struct lpfc_hba *phba)
1026 {
1027         struct lpfc_io_buf *psb, *psb_next;
1028         struct lpfc_async_xchg_ctx *ctxp, *ctxp_next;
1029         struct lpfc_sli4_hdw_queue *qp;
1030         LIST_HEAD(aborts);
1031         LIST_HEAD(nvme_aborts);
1032         LIST_HEAD(nvmet_aborts);
1033         struct lpfc_sglq *sglq_entry = NULL;
1034         int cnt, idx;
1035
1036
1037         lpfc_sli_hbqbuf_free_all(phba);
1038         lpfc_hba_clean_txcmplq(phba);
1039
1040         /* At this point in time the HBA is either reset or DOA. Either
1041          * way, nothing should be on lpfc_abts_els_sgl_list, it needs to be
1042          * on the lpfc_els_sgl_list so that it can either be freed if the
1043          * driver is unloading or reposted if the driver is restarting
1044          * the port.
1045          */
1046         spin_lock_irq(&phba->hbalock);  /* required for lpfc_els_sgl_list and */
1047                                         /* scsl_buf_list */
1048         /* sgl_list_lock required because worker thread uses this
1049          * list.
1050          */
1051         spin_lock(&phba->sli4_hba.sgl_list_lock);
1052         list_for_each_entry(sglq_entry,
1053                 &phba->sli4_hba.lpfc_abts_els_sgl_list, list)
1054                 sglq_entry->state = SGL_FREED;
1055
1056         list_splice_init(&phba->sli4_hba.lpfc_abts_els_sgl_list,
1057                         &phba->sli4_hba.lpfc_els_sgl_list);
1058
1059
1060         spin_unlock(&phba->sli4_hba.sgl_list_lock);
1061
1062         /* abts_xxxx_buf_list_lock required because worker thread uses this
1063          * list.
1064          */
1065         cnt = 0;
1066         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
1067                 qp = &phba->sli4_hba.hdwq[idx];
1068
1069                 spin_lock(&qp->abts_io_buf_list_lock);
1070                 list_splice_init(&qp->lpfc_abts_io_buf_list,
1071                                  &aborts);
1072
1073                 list_for_each_entry_safe(psb, psb_next, &aborts, list) {
1074                         psb->pCmd = NULL;
1075                         psb->status = IOSTAT_SUCCESS;
1076                         cnt++;
1077                 }
1078                 spin_lock(&qp->io_buf_list_put_lock);
1079                 list_splice_init(&aborts, &qp->lpfc_io_buf_list_put);
1080                 qp->put_io_bufs += qp->abts_scsi_io_bufs;
1081                 qp->put_io_bufs += qp->abts_nvme_io_bufs;
1082                 qp->abts_scsi_io_bufs = 0;
1083                 qp->abts_nvme_io_bufs = 0;
1084                 spin_unlock(&qp->io_buf_list_put_lock);
1085                 spin_unlock(&qp->abts_io_buf_list_lock);
1086         }
1087         spin_unlock_irq(&phba->hbalock);
1088
1089         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
1090                 spin_lock_irq(&phba->sli4_hba.abts_nvmet_buf_list_lock);
1091                 list_splice_init(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list,
1092                                  &nvmet_aborts);
1093                 spin_unlock_irq(&phba->sli4_hba.abts_nvmet_buf_list_lock);
1094                 list_for_each_entry_safe(ctxp, ctxp_next, &nvmet_aborts, list) {
1095                         ctxp->flag &= ~(LPFC_NVME_XBUSY | LPFC_NVME_ABORT_OP);
1096                         lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
1097                 }
1098         }
1099
1100         lpfc_sli4_free_sp_events(phba);
1101         return cnt;
1102 }
1103
1104 /**
1105  * lpfc_hba_down_post - Wrapper func for hba down post routine
1106  * @phba: pointer to lpfc HBA data structure.
1107  *
1108  * This routine wraps the actual SLI3 or SLI4 routine for performing
1109  * uninitialization after the HBA is reset when bring down the SLI Layer.
1110  *
1111  * Return codes
1112  *   0 - success.
1113  *   Any other value - error.
1114  **/
1115 int
1116 lpfc_hba_down_post(struct lpfc_hba *phba)
1117 {
1118         return (*phba->lpfc_hba_down_post)(phba);
1119 }
1120
1121 /**
1122  * lpfc_hb_timeout - The HBA-timer timeout handler
1123  * @t: timer context used to obtain the pointer to lpfc hba data structure.
1124  *
1125  * This is the HBA-timer timeout handler registered to the lpfc driver. When
1126  * this timer fires, a HBA timeout event shall be posted to the lpfc driver
1127  * work-port-events bitmap and the worker thread is notified. This timeout
1128  * event will be used by the worker thread to invoke the actual timeout
1129  * handler routine, lpfc_hb_timeout_handler. Any periodical operations will
1130  * be performed in the timeout handler and the HBA timeout event bit shall
1131  * be cleared by the worker thread after it has taken the event bitmap out.
1132  **/
1133 static void
1134 lpfc_hb_timeout(struct timer_list *t)
1135 {
1136         struct lpfc_hba *phba;
1137         uint32_t tmo_posted;
1138         unsigned long iflag;
1139
1140         phba = from_timer(phba, t, hb_tmofunc);
1141
1142         /* Check for heart beat timeout conditions */
1143         spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
1144         tmo_posted = phba->pport->work_port_events & WORKER_HB_TMO;
1145         if (!tmo_posted)
1146                 phba->pport->work_port_events |= WORKER_HB_TMO;
1147         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
1148
1149         /* Tell the worker thread there is work to do */
1150         if (!tmo_posted)
1151                 lpfc_worker_wake_up(phba);
1152         return;
1153 }
1154
1155 /**
1156  * lpfc_rrq_timeout - The RRQ-timer timeout handler
1157  * @t: timer context used to obtain the pointer to lpfc hba data structure.
1158  *
1159  * This is the RRQ-timer timeout handler registered to the lpfc driver. When
1160  * this timer fires, a RRQ timeout event shall be posted to the lpfc driver
1161  * work-port-events bitmap and the worker thread is notified. This timeout
1162  * event will be used by the worker thread to invoke the actual timeout
1163  * handler routine, lpfc_rrq_handler. Any periodical operations will
1164  * be performed in the timeout handler and the RRQ timeout event bit shall
1165  * be cleared by the worker thread after it has taken the event bitmap out.
1166  **/
1167 static void
1168 lpfc_rrq_timeout(struct timer_list *t)
1169 {
1170         struct lpfc_hba *phba;
1171         unsigned long iflag;
1172
1173         phba = from_timer(phba, t, rrq_tmr);
1174         spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
1175         if (!(phba->pport->load_flag & FC_UNLOADING))
1176                 phba->hba_flag |= HBA_RRQ_ACTIVE;
1177         else
1178                 phba->hba_flag &= ~HBA_RRQ_ACTIVE;
1179         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
1180
1181         if (!(phba->pport->load_flag & FC_UNLOADING))
1182                 lpfc_worker_wake_up(phba);
1183 }
1184
1185 /**
1186  * lpfc_hb_mbox_cmpl - The lpfc heart-beat mailbox command callback function
1187  * @phba: pointer to lpfc hba data structure.
1188  * @pmboxq: pointer to the driver internal queue element for mailbox command.
1189  *
1190  * This is the callback function to the lpfc heart-beat mailbox command.
1191  * If configured, the lpfc driver issues the heart-beat mailbox command to
1192  * the HBA every LPFC_HB_MBOX_INTERVAL (current 5) seconds. At the time the
1193  * heart-beat mailbox command is issued, the driver shall set up heart-beat
1194  * timeout timer to LPFC_HB_MBOX_TIMEOUT (current 30) seconds and marks
1195  * heart-beat outstanding state. Once the mailbox command comes back and
1196  * no error conditions detected, the heart-beat mailbox command timer is
1197  * reset to LPFC_HB_MBOX_INTERVAL seconds and the heart-beat outstanding
1198  * state is cleared for the next heart-beat. If the timer expired with the
1199  * heart-beat outstanding state set, the driver will put the HBA offline.
1200  **/
1201 static void
1202 lpfc_hb_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
1203 {
1204         unsigned long drvr_flag;
1205
1206         spin_lock_irqsave(&phba->hbalock, drvr_flag);
1207         phba->hb_outstanding = 0;
1208         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
1209
1210         /* Check and reset heart-beat timer is necessary */
1211         mempool_free(pmboxq, phba->mbox_mem_pool);
1212         if (!(phba->pport->fc_flag & FC_OFFLINE_MODE) &&
1213                 !(phba->link_state == LPFC_HBA_ERROR) &&
1214                 !(phba->pport->load_flag & FC_UNLOADING))
1215                 mod_timer(&phba->hb_tmofunc,
1216                           jiffies +
1217                           msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));
1218         return;
1219 }
1220
1221 /*
1222  * lpfc_idle_stat_delay_work - idle_stat tracking
1223  *
1224  * This routine tracks per-cq idle_stat and determines polling decisions.
1225  *
1226  * Return codes:
1227  *   None
1228  **/
1229 static void
1230 lpfc_idle_stat_delay_work(struct work_struct *work)
1231 {
1232         struct lpfc_hba *phba = container_of(to_delayed_work(work),
1233                                              struct lpfc_hba,
1234                                              idle_stat_delay_work);
1235         struct lpfc_queue *cq;
1236         struct lpfc_sli4_hdw_queue *hdwq;
1237         struct lpfc_idle_stat *idle_stat;
1238         u32 i, idle_percent;
1239         u64 wall, wall_idle, diff_wall, diff_idle, busy_time;
1240
1241         if (phba->pport->load_flag & FC_UNLOADING)
1242                 return;
1243
1244         if (phba->link_state == LPFC_HBA_ERROR ||
1245             phba->pport->fc_flag & FC_OFFLINE_MODE)
1246                 goto requeue;
1247
1248         for_each_present_cpu(i) {
1249                 hdwq = &phba->sli4_hba.hdwq[phba->sli4_hba.cpu_map[i].hdwq];
1250                 cq = hdwq->io_cq;
1251
1252                 /* Skip if we've already handled this cq's primary CPU */
1253                 if (cq->chann != i)
1254                         continue;
1255
1256                 idle_stat = &phba->sli4_hba.idle_stat[i];
1257
1258                 /* get_cpu_idle_time returns values as running counters. Thus,
1259                  * to know the amount for this period, the prior counter values
1260                  * need to be subtracted from the current counter values.
1261                  * From there, the idle time stat can be calculated as a
1262                  * percentage of 100 - the sum of the other consumption times.
1263                  */
1264                 wall_idle = get_cpu_idle_time(i, &wall, 1);
1265                 diff_idle = wall_idle - idle_stat->prev_idle;
1266                 diff_wall = wall - idle_stat->prev_wall;
1267
1268                 if (diff_wall <= diff_idle)
1269                         busy_time = 0;
1270                 else
1271                         busy_time = diff_wall - diff_idle;
1272
1273                 idle_percent = div64_u64(100 * busy_time, diff_wall);
1274                 idle_percent = 100 - idle_percent;
1275
1276                 if (idle_percent < 15)
1277                         cq->poll_mode = LPFC_QUEUE_WORK;
1278                 else
1279                         cq->poll_mode = LPFC_IRQ_POLL;
1280
1281                 idle_stat->prev_idle = wall_idle;
1282                 idle_stat->prev_wall = wall;
1283         }
1284
1285 requeue:
1286         schedule_delayed_work(&phba->idle_stat_delay_work,
1287                               msecs_to_jiffies(LPFC_IDLE_STAT_DELAY));
1288 }
1289
1290 static void
1291 lpfc_hb_eq_delay_work(struct work_struct *work)
1292 {
1293         struct lpfc_hba *phba = container_of(to_delayed_work(work),
1294                                              struct lpfc_hba, eq_delay_work);
1295         struct lpfc_eq_intr_info *eqi, *eqi_new;
1296         struct lpfc_queue *eq, *eq_next;
1297         unsigned char *ena_delay = NULL;
1298         uint32_t usdelay;
1299         int i;
1300
1301         if (!phba->cfg_auto_imax || phba->pport->load_flag & FC_UNLOADING)
1302                 return;
1303
1304         if (phba->link_state == LPFC_HBA_ERROR ||
1305             phba->pport->fc_flag & FC_OFFLINE_MODE)
1306                 goto requeue;
1307
1308         ena_delay = kcalloc(phba->sli4_hba.num_possible_cpu, sizeof(*ena_delay),
1309                             GFP_KERNEL);
1310         if (!ena_delay)
1311                 goto requeue;
1312
1313         for (i = 0; i < phba->cfg_irq_chann; i++) {
1314                 /* Get the EQ corresponding to the IRQ vector */
1315                 eq = phba->sli4_hba.hba_eq_hdl[i].eq;
1316                 if (!eq)
1317                         continue;
1318                 if (eq->q_mode || eq->q_flag & HBA_EQ_DELAY_CHK) {
1319                         eq->q_flag &= ~HBA_EQ_DELAY_CHK;
1320                         ena_delay[eq->last_cpu] = 1;
1321                 }
1322         }
1323
1324         for_each_present_cpu(i) {
1325                 eqi = per_cpu_ptr(phba->sli4_hba.eq_info, i);
1326                 if (ena_delay[i]) {
1327                         usdelay = (eqi->icnt >> 10) * LPFC_EQ_DELAY_STEP;
1328                         if (usdelay > LPFC_MAX_AUTO_EQ_DELAY)
1329                                 usdelay = LPFC_MAX_AUTO_EQ_DELAY;
1330                 } else {
1331                         usdelay = 0;
1332                 }
1333
1334                 eqi->icnt = 0;
1335
1336                 list_for_each_entry_safe(eq, eq_next, &eqi->list, cpu_list) {
1337                         if (unlikely(eq->last_cpu != i)) {
1338                                 eqi_new = per_cpu_ptr(phba->sli4_hba.eq_info,
1339                                                       eq->last_cpu);
1340                                 list_move_tail(&eq->cpu_list, &eqi_new->list);
1341                                 continue;
1342                         }
1343                         if (usdelay != eq->q_mode)
1344                                 lpfc_modify_hba_eq_delay(phba, eq->hdwq, 1,
1345                                                          usdelay);
1346                 }
1347         }
1348
1349         kfree(ena_delay);
1350
1351 requeue:
1352         queue_delayed_work(phba->wq, &phba->eq_delay_work,
1353                            msecs_to_jiffies(LPFC_EQ_DELAY_MSECS));
1354 }
1355
1356 /**
1357  * lpfc_hb_mxp_handler - Multi-XRI pools handler to adjust XRI distribution
1358  * @phba: pointer to lpfc hba data structure.
1359  *
1360  * For each heartbeat, this routine does some heuristic methods to adjust
1361  * XRI distribution. The goal is to fully utilize free XRIs.
1362  **/
1363 static void lpfc_hb_mxp_handler(struct lpfc_hba *phba)
1364 {
1365         u32 i;
1366         u32 hwq_count;
1367
1368         hwq_count = phba->cfg_hdw_queue;
1369         for (i = 0; i < hwq_count; i++) {
1370                 /* Adjust XRIs in private pool */
1371                 lpfc_adjust_pvt_pool_count(phba, i);
1372
1373                 /* Adjust high watermark */
1374                 lpfc_adjust_high_watermark(phba, i);
1375
1376 #ifdef LPFC_MXP_STAT
1377                 /* Snapshot pbl, pvt and busy count */
1378                 lpfc_snapshot_mxp(phba, i);
1379 #endif
1380         }
1381 }
1382
1383 /**
1384  * lpfc_hb_timeout_handler - The HBA-timer timeout handler
1385  * @phba: pointer to lpfc hba data structure.
1386  *
1387  * This is the actual HBA-timer timeout handler to be invoked by the worker
1388  * thread whenever the HBA timer fired and HBA-timeout event posted. This
1389  * handler performs any periodic operations needed for the device. If such
1390  * periodic event has already been attended to either in the interrupt handler
1391  * or by processing slow-ring or fast-ring events within the HBA-timer
1392  * timeout window (LPFC_HB_MBOX_INTERVAL), this handler just simply resets
1393  * the timer for the next timeout period. If lpfc heart-beat mailbox command
1394  * is configured and there is no heart-beat mailbox command outstanding, a
1395  * heart-beat mailbox is issued and timer set properly. Otherwise, if there
1396  * has been a heart-beat mailbox command outstanding, the HBA shall be put
1397  * to offline.
1398  **/
1399 void
1400 lpfc_hb_timeout_handler(struct lpfc_hba *phba)
1401 {
1402         struct lpfc_vport **vports;
1403         LPFC_MBOXQ_t *pmboxq;
1404         struct lpfc_dmabuf *buf_ptr;
1405         int retval, i;
1406         struct lpfc_sli *psli = &phba->sli;
1407         LIST_HEAD(completions);
1408
1409         if (phba->cfg_xri_rebalancing) {
1410                 /* Multi-XRI pools handler */
1411                 lpfc_hb_mxp_handler(phba);
1412         }
1413
1414         vports = lpfc_create_vport_work_array(phba);
1415         if (vports != NULL)
1416                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
1417                         lpfc_rcv_seq_check_edtov(vports[i]);
1418                         lpfc_fdmi_change_check(vports[i]);
1419                 }
1420         lpfc_destroy_vport_work_array(phba, vports);
1421
1422         if ((phba->link_state == LPFC_HBA_ERROR) ||
1423                 (phba->pport->load_flag & FC_UNLOADING) ||
1424                 (phba->pport->fc_flag & FC_OFFLINE_MODE))
1425                 return;
1426
1427         spin_lock_irq(&phba->pport->work_port_lock);
1428
1429         if (time_after(phba->last_completion_time +
1430                         msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL),
1431                         jiffies)) {
1432                 spin_unlock_irq(&phba->pport->work_port_lock);
1433                 if (!phba->hb_outstanding)
1434                         mod_timer(&phba->hb_tmofunc,
1435                                 jiffies +
1436                                 msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));
1437                 else
1438                         mod_timer(&phba->hb_tmofunc,
1439                                 jiffies +
1440                                 msecs_to_jiffies(1000 * LPFC_HB_MBOX_TIMEOUT));
1441                 return;
1442         }
1443         spin_unlock_irq(&phba->pport->work_port_lock);
1444
1445         if (phba->elsbuf_cnt &&
1446                 (phba->elsbuf_cnt == phba->elsbuf_prev_cnt)) {
1447                 spin_lock_irq(&phba->hbalock);
1448                 list_splice_init(&phba->elsbuf, &completions);
1449                 phba->elsbuf_cnt = 0;
1450                 phba->elsbuf_prev_cnt = 0;
1451                 spin_unlock_irq(&phba->hbalock);
1452
1453                 while (!list_empty(&completions)) {
1454                         list_remove_head(&completions, buf_ptr,
1455                                 struct lpfc_dmabuf, list);
1456                         lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
1457                         kfree(buf_ptr);
1458                 }
1459         }
1460         phba->elsbuf_prev_cnt = phba->elsbuf_cnt;
1461
1462         /* If there is no heart beat outstanding, issue a heartbeat command */
1463         if (phba->cfg_enable_hba_heartbeat) {
1464                 if (!phba->hb_outstanding) {
1465                         if ((!(psli->sli_flag & LPFC_SLI_MBOX_ACTIVE)) &&
1466                                 (list_empty(&psli->mboxq))) {
1467                                 pmboxq = mempool_alloc(phba->mbox_mem_pool,
1468                                                         GFP_KERNEL);
1469                                 if (!pmboxq) {
1470                                         mod_timer(&phba->hb_tmofunc,
1471                                                  jiffies +
1472                                                  msecs_to_jiffies(1000 *
1473                                                  LPFC_HB_MBOX_INTERVAL));
1474                                         return;
1475                                 }
1476
1477                                 lpfc_heart_beat(phba, pmboxq);
1478                                 pmboxq->mbox_cmpl = lpfc_hb_mbox_cmpl;
1479                                 pmboxq->vport = phba->pport;
1480                                 retval = lpfc_sli_issue_mbox(phba, pmboxq,
1481                                                 MBX_NOWAIT);
1482
1483                                 if (retval != MBX_BUSY &&
1484                                         retval != MBX_SUCCESS) {
1485                                         mempool_free(pmboxq,
1486                                                         phba->mbox_mem_pool);
1487                                         mod_timer(&phba->hb_tmofunc,
1488                                                 jiffies +
1489                                                 msecs_to_jiffies(1000 *
1490                                                 LPFC_HB_MBOX_INTERVAL));
1491                                         return;
1492                                 }
1493                                 phba->skipped_hb = 0;
1494                                 phba->hb_outstanding = 1;
1495                         } else if (time_before_eq(phba->last_completion_time,
1496                                         phba->skipped_hb)) {
1497                                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
1498                                         "2857 Last completion time not "
1499                                         " updated in %d ms\n",
1500                                         jiffies_to_msecs(jiffies
1501                                                  - phba->last_completion_time));
1502                         } else
1503                                 phba->skipped_hb = jiffies;
1504
1505                         mod_timer(&phba->hb_tmofunc,
1506                                  jiffies +
1507                                  msecs_to_jiffies(1000 * LPFC_HB_MBOX_TIMEOUT));
1508                         return;
1509                 } else {
1510                         /*
1511                         * If heart beat timeout called with hb_outstanding set
1512                         * we need to give the hb mailbox cmd a chance to
1513                         * complete or TMO.
1514                         */
1515                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
1516                                         "0459 Adapter heartbeat still out"
1517                                         "standing:last compl time was %d ms.\n",
1518                                         jiffies_to_msecs(jiffies
1519                                                  - phba->last_completion_time));
1520                         mod_timer(&phba->hb_tmofunc,
1521                                 jiffies +
1522                                 msecs_to_jiffies(1000 * LPFC_HB_MBOX_TIMEOUT));
1523                 }
1524         } else {
1525                         mod_timer(&phba->hb_tmofunc,
1526                                 jiffies +
1527                                 msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));
1528         }
1529 }
1530
1531 /**
1532  * lpfc_offline_eratt - Bring lpfc offline on hardware error attention
1533  * @phba: pointer to lpfc hba data structure.
1534  *
1535  * This routine is called to bring the HBA offline when HBA hardware error
1536  * other than Port Error 6 has been detected.
1537  **/
1538 static void
1539 lpfc_offline_eratt(struct lpfc_hba *phba)
1540 {
1541         struct lpfc_sli   *psli = &phba->sli;
1542
1543         spin_lock_irq(&phba->hbalock);
1544         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1545         spin_unlock_irq(&phba->hbalock);
1546         lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
1547
1548         lpfc_offline(phba);
1549         lpfc_reset_barrier(phba);
1550         spin_lock_irq(&phba->hbalock);
1551         lpfc_sli_brdreset(phba);
1552         spin_unlock_irq(&phba->hbalock);
1553         lpfc_hba_down_post(phba);
1554         lpfc_sli_brdready(phba, HS_MBRDY);
1555         lpfc_unblock_mgmt_io(phba);
1556         phba->link_state = LPFC_HBA_ERROR;
1557         return;
1558 }
1559
1560 /**
1561  * lpfc_sli4_offline_eratt - Bring lpfc offline on SLI4 hardware error attention
1562  * @phba: pointer to lpfc hba data structure.
1563  *
1564  * This routine is called to bring a SLI4 HBA offline when HBA hardware error
1565  * other than Port Error 6 has been detected.
1566  **/
1567 void
1568 lpfc_sli4_offline_eratt(struct lpfc_hba *phba)
1569 {
1570         spin_lock_irq(&phba->hbalock);
1571         phba->link_state = LPFC_HBA_ERROR;
1572         spin_unlock_irq(&phba->hbalock);
1573
1574         lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
1575         lpfc_sli_flush_io_rings(phba);
1576         lpfc_offline(phba);
1577         lpfc_hba_down_post(phba);
1578         lpfc_unblock_mgmt_io(phba);
1579 }
1580
1581 /**
1582  * lpfc_handle_deferred_eratt - The HBA hardware deferred error handler
1583  * @phba: pointer to lpfc hba data structure.
1584  *
1585  * This routine is invoked to handle the deferred HBA hardware error
1586  * conditions. This type of error is indicated by HBA by setting ER1
1587  * and another ER bit in the host status register. The driver will
1588  * wait until the ER1 bit clears before handling the error condition.
1589  **/
1590 static void
1591 lpfc_handle_deferred_eratt(struct lpfc_hba *phba)
1592 {
1593         uint32_t old_host_status = phba->work_hs;
1594         struct lpfc_sli *psli = &phba->sli;
1595
1596         /* If the pci channel is offline, ignore possible errors,
1597          * since we cannot communicate with the pci card anyway.
1598          */
1599         if (pci_channel_offline(phba->pcidev)) {
1600                 spin_lock_irq(&phba->hbalock);
1601                 phba->hba_flag &= ~DEFER_ERATT;
1602                 spin_unlock_irq(&phba->hbalock);
1603                 return;
1604         }
1605
1606         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1607                         "0479 Deferred Adapter Hardware Error "
1608                         "Data: x%x x%x x%x\n",
1609                         phba->work_hs, phba->work_status[0],
1610                         phba->work_status[1]);
1611
1612         spin_lock_irq(&phba->hbalock);
1613         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1614         spin_unlock_irq(&phba->hbalock);
1615
1616
1617         /*
1618          * Firmware stops when it triggred erratt. That could cause the I/Os
1619          * dropped by the firmware. Error iocb (I/O) on txcmplq and let the
1620          * SCSI layer retry it after re-establishing link.
1621          */
1622         lpfc_sli_abort_fcp_rings(phba);
1623
1624         /*
1625          * There was a firmware error. Take the hba offline and then
1626          * attempt to restart it.
1627          */
1628         lpfc_offline_prep(phba, LPFC_MBX_WAIT);
1629         lpfc_offline(phba);
1630
1631         /* Wait for the ER1 bit to clear.*/
1632         while (phba->work_hs & HS_FFER1) {
1633                 msleep(100);
1634                 if (lpfc_readl(phba->HSregaddr, &phba->work_hs)) {
1635                         phba->work_hs = UNPLUG_ERR ;
1636                         break;
1637                 }
1638                 /* If driver is unloading let the worker thread continue */
1639                 if (phba->pport->load_flag & FC_UNLOADING) {
1640                         phba->work_hs = 0;
1641                         break;
1642                 }
1643         }
1644
1645         /*
1646          * This is to ptrotect against a race condition in which
1647          * first write to the host attention register clear the
1648          * host status register.
1649          */
1650         if ((!phba->work_hs) && (!(phba->pport->load_flag & FC_UNLOADING)))
1651                 phba->work_hs = old_host_status & ~HS_FFER1;
1652
1653         spin_lock_irq(&phba->hbalock);
1654         phba->hba_flag &= ~DEFER_ERATT;
1655         spin_unlock_irq(&phba->hbalock);
1656         phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
1657         phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
1658 }
1659
1660 static void
1661 lpfc_board_errevt_to_mgmt(struct lpfc_hba *phba)
1662 {
1663         struct lpfc_board_event_header board_event;
1664         struct Scsi_Host *shost;
1665
1666         board_event.event_type = FC_REG_BOARD_EVENT;
1667         board_event.subcategory = LPFC_EVENT_PORTINTERR;
1668         shost = lpfc_shost_from_vport(phba->pport);
1669         fc_host_post_vendor_event(shost, fc_get_event_number(),
1670                                   sizeof(board_event),
1671                                   (char *) &board_event,
1672                                   LPFC_NL_VENDOR_ID);
1673 }
1674
1675 /**
1676  * lpfc_handle_eratt_s3 - The SLI3 HBA hardware error handler
1677  * @phba: pointer to lpfc hba data structure.
1678  *
1679  * This routine is invoked to handle the following HBA hardware error
1680  * conditions:
1681  * 1 - HBA error attention interrupt
1682  * 2 - DMA ring index out of range
1683  * 3 - Mailbox command came back as unknown
1684  **/
1685 static void
1686 lpfc_handle_eratt_s3(struct lpfc_hba *phba)
1687 {
1688         struct lpfc_vport *vport = phba->pport;
1689         struct lpfc_sli   *psli = &phba->sli;
1690         uint32_t event_data;
1691         unsigned long temperature;
1692         struct temp_event temp_event_data;
1693         struct Scsi_Host  *shost;
1694
1695         /* If the pci channel is offline, ignore possible errors,
1696          * since we cannot communicate with the pci card anyway.
1697          */
1698         if (pci_channel_offline(phba->pcidev)) {
1699                 spin_lock_irq(&phba->hbalock);
1700                 phba->hba_flag &= ~DEFER_ERATT;
1701                 spin_unlock_irq(&phba->hbalock);
1702                 return;
1703         }
1704
1705         /* If resets are disabled then leave the HBA alone and return */
1706         if (!phba->cfg_enable_hba_reset)
1707                 return;
1708
1709         /* Send an internal error event to mgmt application */
1710         lpfc_board_errevt_to_mgmt(phba);
1711
1712         if (phba->hba_flag & DEFER_ERATT)
1713                 lpfc_handle_deferred_eratt(phba);
1714
1715         if ((phba->work_hs & HS_FFER6) || (phba->work_hs & HS_FFER8)) {
1716                 if (phba->work_hs & HS_FFER6)
1717                         /* Re-establishing Link */
1718                         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1719                                         "1301 Re-establishing Link "
1720                                         "Data: x%x x%x x%x\n",
1721                                         phba->work_hs, phba->work_status[0],
1722                                         phba->work_status[1]);
1723                 if (phba->work_hs & HS_FFER8)
1724                         /* Device Zeroization */
1725                         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1726                                         "2861 Host Authentication device "
1727                                         "zeroization Data:x%x x%x x%x\n",
1728                                         phba->work_hs, phba->work_status[0],
1729                                         phba->work_status[1]);
1730
1731                 spin_lock_irq(&phba->hbalock);
1732                 psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1733                 spin_unlock_irq(&phba->hbalock);
1734
1735                 /*
1736                 * Firmware stops when it triggled erratt with HS_FFER6.
1737                 * That could cause the I/Os dropped by the firmware.
1738                 * Error iocb (I/O) on txcmplq and let the SCSI layer
1739                 * retry it after re-establishing link.
1740                 */
1741                 lpfc_sli_abort_fcp_rings(phba);
1742
1743                 /*
1744                  * There was a firmware error.  Take the hba offline and then
1745                  * attempt to restart it.
1746                  */
1747                 lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
1748                 lpfc_offline(phba);
1749                 lpfc_sli_brdrestart(phba);
1750                 if (lpfc_online(phba) == 0) {   /* Initialize the HBA */
1751                         lpfc_unblock_mgmt_io(phba);
1752                         return;
1753                 }
1754                 lpfc_unblock_mgmt_io(phba);
1755         } else if (phba->work_hs & HS_CRIT_TEMP) {
1756                 temperature = readl(phba->MBslimaddr + TEMPERATURE_OFFSET);
1757                 temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
1758                 temp_event_data.event_code = LPFC_CRIT_TEMP;
1759                 temp_event_data.data = (uint32_t)temperature;
1760
1761                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1762                                 "0406 Adapter maximum temperature exceeded "
1763                                 "(%ld), taking this port offline "
1764                                 "Data: x%x x%x x%x\n",
1765                                 temperature, phba->work_hs,
1766                                 phba->work_status[0], phba->work_status[1]);
1767
1768                 shost = lpfc_shost_from_vport(phba->pport);
1769                 fc_host_post_vendor_event(shost, fc_get_event_number(),
1770                                           sizeof(temp_event_data),
1771                                           (char *) &temp_event_data,
1772                                           SCSI_NL_VID_TYPE_PCI
1773                                           | PCI_VENDOR_ID_EMULEX);
1774
1775                 spin_lock_irq(&phba->hbalock);
1776                 phba->over_temp_state = HBA_OVER_TEMP;
1777                 spin_unlock_irq(&phba->hbalock);
1778                 lpfc_offline_eratt(phba);
1779
1780         } else {
1781                 /* The if clause above forces this code path when the status
1782                  * failure is a value other than FFER6. Do not call the offline
1783                  * twice. This is the adapter hardware error path.
1784                  */
1785                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1786                                 "0457 Adapter Hardware Error "
1787                                 "Data: x%x x%x x%x\n",
1788                                 phba->work_hs,
1789                                 phba->work_status[0], phba->work_status[1]);
1790
1791                 event_data = FC_REG_DUMP_EVENT;
1792                 shost = lpfc_shost_from_vport(vport);
1793                 fc_host_post_vendor_event(shost, fc_get_event_number(),
1794                                 sizeof(event_data), (char *) &event_data,
1795                                 SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
1796
1797                 lpfc_offline_eratt(phba);
1798         }
1799         return;
1800 }
1801
1802 /**
1803  * lpfc_sli4_port_sta_fn_reset - The SLI4 function reset due to port status reg
1804  * @phba: pointer to lpfc hba data structure.
1805  * @mbx_action: flag for mailbox shutdown action.
1806  * @en_rn_msg: send reset/port recovery message.
1807  * This routine is invoked to perform an SLI4 port PCI function reset in
1808  * response to port status register polling attention. It waits for port
1809  * status register (ERR, RDY, RN) bits before proceeding with function reset.
1810  * During this process, interrupt vectors are freed and later requested
1811  * for handling possible port resource change.
1812  **/
1813 static int
1814 lpfc_sli4_port_sta_fn_reset(struct lpfc_hba *phba, int mbx_action,
1815                             bool en_rn_msg)
1816 {
1817         int rc;
1818         uint32_t intr_mode;
1819
1820         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
1821             LPFC_SLI_INTF_IF_TYPE_2) {
1822                 /*
1823                  * On error status condition, driver need to wait for port
1824                  * ready before performing reset.
1825                  */
1826                 rc = lpfc_sli4_pdev_status_reg_wait(phba);
1827                 if (rc)
1828                         return rc;
1829         }
1830
1831         /* need reset: attempt for port recovery */
1832         if (en_rn_msg)
1833                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1834                                 "2887 Reset Needed: Attempting Port "
1835                                 "Recovery...\n");
1836         lpfc_offline_prep(phba, mbx_action);
1837         lpfc_sli_flush_io_rings(phba);
1838         lpfc_offline(phba);
1839         /* release interrupt for possible resource change */
1840         lpfc_sli4_disable_intr(phba);
1841         rc = lpfc_sli_brdrestart(phba);
1842         if (rc) {
1843                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1844                                 "6309 Failed to restart board\n");
1845                 return rc;
1846         }
1847         /* request and enable interrupt */
1848         intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
1849         if (intr_mode == LPFC_INTR_ERROR) {
1850                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1851                                 "3175 Failed to enable interrupt\n");
1852                 return -EIO;
1853         }
1854         phba->intr_mode = intr_mode;
1855         rc = lpfc_online(phba);
1856         if (rc == 0)
1857                 lpfc_unblock_mgmt_io(phba);
1858
1859         return rc;
1860 }
1861
1862 /**
1863  * lpfc_handle_eratt_s4 - The SLI4 HBA hardware error handler
1864  * @phba: pointer to lpfc hba data structure.
1865  *
1866  * This routine is invoked to handle the SLI4 HBA hardware error attention
1867  * conditions.
1868  **/
1869 static void
1870 lpfc_handle_eratt_s4(struct lpfc_hba *phba)
1871 {
1872         struct lpfc_vport *vport = phba->pport;
1873         uint32_t event_data;
1874         struct Scsi_Host *shost;
1875         uint32_t if_type;
1876         struct lpfc_register portstat_reg = {0};
1877         uint32_t reg_err1, reg_err2;
1878         uint32_t uerrlo_reg, uemasklo_reg;
1879         uint32_t smphr_port_status = 0, pci_rd_rc1, pci_rd_rc2;
1880         bool en_rn_msg = true;
1881         struct temp_event temp_event_data;
1882         struct lpfc_register portsmphr_reg;
1883         int rc, i;
1884
1885         /* If the pci channel is offline, ignore possible errors, since
1886          * we cannot communicate with the pci card anyway.
1887          */
1888         if (pci_channel_offline(phba->pcidev)) {
1889                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1890                                 "3166 pci channel is offline\n");
1891                 lpfc_sli4_offline_eratt(phba);
1892                 return;
1893         }
1894
1895         memset(&portsmphr_reg, 0, sizeof(portsmphr_reg));
1896         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
1897         switch (if_type) {
1898         case LPFC_SLI_INTF_IF_TYPE_0:
1899                 pci_rd_rc1 = lpfc_readl(
1900                                 phba->sli4_hba.u.if_type0.UERRLOregaddr,
1901                                 &uerrlo_reg);
1902                 pci_rd_rc2 = lpfc_readl(
1903                                 phba->sli4_hba.u.if_type0.UEMASKLOregaddr,
1904                                 &uemasklo_reg);
1905                 /* consider PCI bus read error as pci_channel_offline */
1906                 if (pci_rd_rc1 == -EIO && pci_rd_rc2 == -EIO)
1907                         return;
1908                 if (!(phba->hba_flag & HBA_RECOVERABLE_UE)) {
1909                         lpfc_sli4_offline_eratt(phba);
1910                         return;
1911                 }
1912                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1913                                 "7623 Checking UE recoverable");
1914
1915                 for (i = 0; i < phba->sli4_hba.ue_to_sr / 1000; i++) {
1916                         if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
1917                                        &portsmphr_reg.word0))
1918                                 continue;
1919
1920                         smphr_port_status = bf_get(lpfc_port_smphr_port_status,
1921                                                    &portsmphr_reg);
1922                         if ((smphr_port_status & LPFC_PORT_SEM_MASK) ==
1923                             LPFC_PORT_SEM_UE_RECOVERABLE)
1924                                 break;
1925                         /*Sleep for 1Sec, before checking SEMAPHORE */
1926                         msleep(1000);
1927                 }
1928
1929                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1930                                 "4827 smphr_port_status x%x : Waited %dSec",
1931                                 smphr_port_status, i);
1932
1933                 /* Recoverable UE, reset the HBA device */
1934                 if ((smphr_port_status & LPFC_PORT_SEM_MASK) ==
1935                     LPFC_PORT_SEM_UE_RECOVERABLE) {
1936                         for (i = 0; i < 20; i++) {
1937                                 msleep(1000);
1938                                 if (!lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
1939                                     &portsmphr_reg.word0) &&
1940                                     (LPFC_POST_STAGE_PORT_READY ==
1941                                      bf_get(lpfc_port_smphr_port_status,
1942                                      &portsmphr_reg))) {
1943                                         rc = lpfc_sli4_port_sta_fn_reset(phba,
1944                                                 LPFC_MBX_NO_WAIT, en_rn_msg);
1945                                         if (rc == 0)
1946                                                 return;
1947                                         lpfc_printf_log(phba, KERN_ERR,
1948                                                 LOG_TRACE_EVENT,
1949                                                 "4215 Failed to recover UE");
1950                                         break;
1951                                 }
1952                         }
1953                 }
1954                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1955                                 "7624 Firmware not ready: Failing UE recovery,"
1956                                 " waited %dSec", i);
1957                 phba->link_state = LPFC_HBA_ERROR;
1958                 break;
1959
1960         case LPFC_SLI_INTF_IF_TYPE_2:
1961         case LPFC_SLI_INTF_IF_TYPE_6:
1962                 pci_rd_rc1 = lpfc_readl(
1963                                 phba->sli4_hba.u.if_type2.STATUSregaddr,
1964                                 &portstat_reg.word0);
1965                 /* consider PCI bus read error as pci_channel_offline */
1966                 if (pci_rd_rc1 == -EIO) {
1967                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1968                                 "3151 PCI bus read access failure: x%x\n",
1969                                 readl(phba->sli4_hba.u.if_type2.STATUSregaddr));
1970                         lpfc_sli4_offline_eratt(phba);
1971                         return;
1972                 }
1973                 reg_err1 = readl(phba->sli4_hba.u.if_type2.ERR1regaddr);
1974                 reg_err2 = readl(phba->sli4_hba.u.if_type2.ERR2regaddr);
1975                 if (bf_get(lpfc_sliport_status_oti, &portstat_reg)) {
1976                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1977                                         "2889 Port Overtemperature event, "
1978                                         "taking port offline Data: x%x x%x\n",
1979                                         reg_err1, reg_err2);
1980
1981                         phba->sfp_alarm |= LPFC_TRANSGRESSION_HIGH_TEMPERATURE;
1982                         temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
1983                         temp_event_data.event_code = LPFC_CRIT_TEMP;
1984                         temp_event_data.data = 0xFFFFFFFF;
1985
1986                         shost = lpfc_shost_from_vport(phba->pport);
1987                         fc_host_post_vendor_event(shost, fc_get_event_number(),
1988                                                   sizeof(temp_event_data),
1989                                                   (char *)&temp_event_data,
1990                                                   SCSI_NL_VID_TYPE_PCI
1991                                                   | PCI_VENDOR_ID_EMULEX);
1992
1993                         spin_lock_irq(&phba->hbalock);
1994                         phba->over_temp_state = HBA_OVER_TEMP;
1995                         spin_unlock_irq(&phba->hbalock);
1996                         lpfc_sli4_offline_eratt(phba);
1997                         return;
1998                 }
1999                 if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
2000                     reg_err2 == SLIPORT_ERR2_REG_FW_RESTART) {
2001                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2002                                         "3143 Port Down: Firmware Update "
2003                                         "Detected\n");
2004                         en_rn_msg = false;
2005                 } else if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
2006                          reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP)
2007                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2008                                         "3144 Port Down: Debug Dump\n");
2009                 else if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
2010                          reg_err2 == SLIPORT_ERR2_REG_FUNC_PROVISON)
2011                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2012                                         "3145 Port Down: Provisioning\n");
2013
2014                 /* If resets are disabled then leave the HBA alone and return */
2015                 if (!phba->cfg_enable_hba_reset)
2016                         return;
2017
2018                 /* Check port status register for function reset */
2019                 rc = lpfc_sli4_port_sta_fn_reset(phba, LPFC_MBX_NO_WAIT,
2020                                 en_rn_msg);
2021                 if (rc == 0) {
2022                         /* don't report event on forced debug dump */
2023                         if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
2024                             reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP)
2025                                 return;
2026                         else
2027                                 break;
2028                 }
2029                 /* fall through for not able to recover */
2030                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2031                                 "3152 Unrecoverable error\n");
2032                 phba->link_state = LPFC_HBA_ERROR;
2033                 break;
2034         case LPFC_SLI_INTF_IF_TYPE_1:
2035         default:
2036                 break;
2037         }
2038         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2039                         "3123 Report dump event to upper layer\n");
2040         /* Send an internal error event to mgmt application */
2041         lpfc_board_errevt_to_mgmt(phba);
2042
2043         event_data = FC_REG_DUMP_EVENT;
2044         shost = lpfc_shost_from_vport(vport);
2045         fc_host_post_vendor_event(shost, fc_get_event_number(),
2046                                   sizeof(event_data), (char *) &event_data,
2047                                   SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
2048 }
2049
2050 /**
2051  * lpfc_handle_eratt - Wrapper func for handling hba error attention
2052  * @phba: pointer to lpfc HBA data structure.
2053  *
2054  * This routine wraps the actual SLI3 or SLI4 hba error attention handling
2055  * routine from the API jump table function pointer from the lpfc_hba struct.
2056  *
2057  * Return codes
2058  *   0 - success.
2059  *   Any other value - error.
2060  **/
2061 void
2062 lpfc_handle_eratt(struct lpfc_hba *phba)
2063 {
2064         (*phba->lpfc_handle_eratt)(phba);
2065 }
2066
2067 /**
2068  * lpfc_handle_latt - The HBA link event handler
2069  * @phba: pointer to lpfc hba data structure.
2070  *
2071  * This routine is invoked from the worker thread to handle a HBA host
2072  * attention link event. SLI3 only.
2073  **/
2074 void
2075 lpfc_handle_latt(struct lpfc_hba *phba)
2076 {
2077         struct lpfc_vport *vport = phba->pport;
2078         struct lpfc_sli   *psli = &phba->sli;
2079         LPFC_MBOXQ_t *pmb;
2080         volatile uint32_t control;
2081         struct lpfc_dmabuf *mp;
2082         int rc = 0;
2083
2084         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2085         if (!pmb) {
2086                 rc = 1;
2087                 goto lpfc_handle_latt_err_exit;
2088         }
2089
2090         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2091         if (!mp) {
2092                 rc = 2;
2093                 goto lpfc_handle_latt_free_pmb;
2094         }
2095
2096         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
2097         if (!mp->virt) {
2098                 rc = 3;
2099                 goto lpfc_handle_latt_free_mp;
2100         }
2101
2102         /* Cleanup any outstanding ELS commands */
2103         lpfc_els_flush_all_cmd(phba);
2104
2105         psli->slistat.link_event++;
2106         lpfc_read_topology(phba, pmb, mp);
2107         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
2108         pmb->vport = vport;
2109         /* Block ELS IOCBs until we have processed this mbox command */
2110         phba->sli.sli3_ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
2111         rc = lpfc_sli_issue_mbox (phba, pmb, MBX_NOWAIT);
2112         if (rc == MBX_NOT_FINISHED) {
2113                 rc = 4;
2114                 goto lpfc_handle_latt_free_mbuf;
2115         }
2116
2117         /* Clear Link Attention in HA REG */
2118         spin_lock_irq(&phba->hbalock);
2119         writel(HA_LATT, phba->HAregaddr);
2120         readl(phba->HAregaddr); /* flush */
2121         spin_unlock_irq(&phba->hbalock);
2122
2123         return;
2124
2125 lpfc_handle_latt_free_mbuf:
2126         phba->sli.sli3_ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
2127         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2128 lpfc_handle_latt_free_mp:
2129         kfree(mp);
2130 lpfc_handle_latt_free_pmb:
2131         mempool_free(pmb, phba->mbox_mem_pool);
2132 lpfc_handle_latt_err_exit:
2133         /* Enable Link attention interrupts */
2134         spin_lock_irq(&phba->hbalock);
2135         psli->sli_flag |= LPFC_PROCESS_LA;
2136         control = readl(phba->HCregaddr);
2137         control |= HC_LAINT_ENA;
2138         writel(control, phba->HCregaddr);
2139         readl(phba->HCregaddr); /* flush */
2140
2141         /* Clear Link Attention in HA REG */
2142         writel(HA_LATT, phba->HAregaddr);
2143         readl(phba->HAregaddr); /* flush */
2144         spin_unlock_irq(&phba->hbalock);
2145         lpfc_linkdown(phba);
2146         phba->link_state = LPFC_HBA_ERROR;
2147
2148         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2149                         "0300 LATT: Cannot issue READ_LA: Data:%d\n", rc);
2150
2151         return;
2152 }
2153
2154 /**
2155  * lpfc_parse_vpd - Parse VPD (Vital Product Data)
2156  * @phba: pointer to lpfc hba data structure.
2157  * @vpd: pointer to the vital product data.
2158  * @len: length of the vital product data in bytes.
2159  *
2160  * This routine parses the Vital Product Data (VPD). The VPD is treated as
2161  * an array of characters. In this routine, the ModelName, ProgramType, and
2162  * ModelDesc, etc. fields of the phba data structure will be populated.
2163  *
2164  * Return codes
2165  *   0 - pointer to the VPD passed in is NULL
2166  *   1 - success
2167  **/
2168 int
2169 lpfc_parse_vpd(struct lpfc_hba *phba, uint8_t *vpd, int len)
2170 {
2171         uint8_t lenlo, lenhi;
2172         int Length;
2173         int i, j;
2174         int finished = 0;
2175         int index = 0;
2176
2177         if (!vpd)
2178                 return 0;
2179
2180         /* Vital Product */
2181         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2182                         "0455 Vital Product Data: x%x x%x x%x x%x\n",
2183                         (uint32_t) vpd[0], (uint32_t) vpd[1], (uint32_t) vpd[2],
2184                         (uint32_t) vpd[3]);
2185         while (!finished && (index < (len - 4))) {
2186                 switch (vpd[index]) {
2187                 case 0x82:
2188                 case 0x91:
2189                         index += 1;
2190                         lenlo = vpd[index];
2191                         index += 1;
2192                         lenhi = vpd[index];
2193                         index += 1;
2194                         i = ((((unsigned short)lenhi) << 8) + lenlo);
2195                         index += i;
2196                         break;
2197                 case 0x90:
2198                         index += 1;
2199                         lenlo = vpd[index];
2200                         index += 1;
2201                         lenhi = vpd[index];
2202                         index += 1;
2203                         Length = ((((unsigned short)lenhi) << 8) + lenlo);
2204                         if (Length > len - index)
2205                                 Length = len - index;
2206                         while (Length > 0) {
2207                         /* Look for Serial Number */
2208                         if ((vpd[index] == 'S') && (vpd[index+1] == 'N')) {
2209                                 index += 2;
2210                                 i = vpd[index];
2211                                 index += 1;
2212                                 j = 0;
2213                                 Length -= (3+i);
2214                                 while(i--) {
2215                                         phba->SerialNumber[j++] = vpd[index++];
2216                                         if (j == 31)
2217                                                 break;
2218                                 }
2219                                 phba->SerialNumber[j] = 0;
2220                                 continue;
2221                         }
2222                         else if ((vpd[index] == 'V') && (vpd[index+1] == '1')) {
2223                                 phba->vpd_flag |= VPD_MODEL_DESC;
2224                                 index += 2;
2225                                 i = vpd[index];
2226                                 index += 1;
2227                                 j = 0;
2228                                 Length -= (3+i);
2229                                 while(i--) {
2230                                         phba->ModelDesc[j++] = vpd[index++];
2231                                         if (j == 255)
2232                                                 break;
2233                                 }
2234                                 phba->ModelDesc[j] = 0;
2235                                 continue;
2236                         }
2237                         else if ((vpd[index] == 'V') && (vpd[index+1] == '2')) {
2238                                 phba->vpd_flag |= VPD_MODEL_NAME;
2239                                 index += 2;
2240                                 i = vpd[index];
2241                                 index += 1;
2242                                 j = 0;
2243                                 Length -= (3+i);
2244                                 while(i--) {
2245                                         phba->ModelName[j++] = vpd[index++];
2246                                         if (j == 79)
2247                                                 break;
2248                                 }
2249                                 phba->ModelName[j] = 0;
2250                                 continue;
2251                         }
2252                         else if ((vpd[index] == 'V') && (vpd[index+1] == '3')) {
2253                                 phba->vpd_flag |= VPD_PROGRAM_TYPE;
2254                                 index += 2;
2255                                 i = vpd[index];
2256                                 index += 1;
2257                                 j = 0;
2258                                 Length -= (3+i);
2259                                 while(i--) {
2260                                         phba->ProgramType[j++] = vpd[index++];
2261                                         if (j == 255)
2262                                                 break;
2263                                 }
2264                                 phba->ProgramType[j] = 0;
2265                                 continue;
2266                         }
2267                         else if ((vpd[index] == 'V') && (vpd[index+1] == '4')) {
2268                                 phba->vpd_flag |= VPD_PORT;
2269                                 index += 2;
2270                                 i = vpd[index];
2271                                 index += 1;
2272                                 j = 0;
2273                                 Length -= (3+i);
2274                                 while(i--) {
2275                                         if ((phba->sli_rev == LPFC_SLI_REV4) &&
2276                                             (phba->sli4_hba.pport_name_sta ==
2277                                              LPFC_SLI4_PPNAME_GET)) {
2278                                                 j++;
2279                                                 index++;
2280                                         } else
2281                                                 phba->Port[j++] = vpd[index++];
2282                                         if (j == 19)
2283                                                 break;
2284                                 }
2285                                 if ((phba->sli_rev != LPFC_SLI_REV4) ||
2286                                     (phba->sli4_hba.pport_name_sta ==
2287                                      LPFC_SLI4_PPNAME_NON))
2288                                         phba->Port[j] = 0;
2289                                 continue;
2290                         }
2291                         else {
2292                                 index += 2;
2293                                 i = vpd[index];
2294                                 index += 1;
2295                                 index += i;
2296                                 Length -= (3 + i);
2297                         }
2298                 }
2299                 finished = 0;
2300                 break;
2301                 case 0x78:
2302                         finished = 1;
2303                         break;
2304                 default:
2305                         index ++;
2306                         break;
2307                 }
2308         }
2309
2310         return(1);
2311 }
2312
2313 /**
2314  * lpfc_get_hba_model_desc - Retrieve HBA device model name and description
2315  * @phba: pointer to lpfc hba data structure.
2316  * @mdp: pointer to the data structure to hold the derived model name.
2317  * @descp: pointer to the data structure to hold the derived description.
2318  *
2319  * This routine retrieves HBA's description based on its registered PCI device
2320  * ID. The @descp passed into this function points to an array of 256 chars. It
2321  * shall be returned with the model name, maximum speed, and the host bus type.
2322  * The @mdp passed into this function points to an array of 80 chars. When the
2323  * function returns, the @mdp will be filled with the model name.
2324  **/
2325 static void
2326 lpfc_get_hba_model_desc(struct lpfc_hba *phba, uint8_t *mdp, uint8_t *descp)
2327 {
2328         lpfc_vpd_t *vp;
2329         uint16_t dev_id = phba->pcidev->device;
2330         int max_speed;
2331         int GE = 0;
2332         int oneConnect = 0; /* default is not a oneConnect */
2333         struct {
2334                 char *name;
2335                 char *bus;
2336                 char *function;
2337         } m = {"<Unknown>", "", ""};
2338
2339         if (mdp && mdp[0] != '\0'
2340                 && descp && descp[0] != '\0')
2341                 return;
2342
2343         if (phba->lmt & LMT_64Gb)
2344                 max_speed = 64;
2345         else if (phba->lmt & LMT_32Gb)
2346                 max_speed = 32;
2347         else if (phba->lmt & LMT_16Gb)
2348                 max_speed = 16;
2349         else if (phba->lmt & LMT_10Gb)
2350                 max_speed = 10;
2351         else if (phba->lmt & LMT_8Gb)
2352                 max_speed = 8;
2353         else if (phba->lmt & LMT_4Gb)
2354                 max_speed = 4;
2355         else if (phba->lmt & LMT_2Gb)
2356                 max_speed = 2;
2357         else if (phba->lmt & LMT_1Gb)
2358                 max_speed = 1;
2359         else
2360                 max_speed = 0;
2361
2362         vp = &phba->vpd;
2363
2364         switch (dev_id) {
2365         case PCI_DEVICE_ID_FIREFLY:
2366                 m = (typeof(m)){"LP6000", "PCI",
2367                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2368                 break;
2369         case PCI_DEVICE_ID_SUPERFLY:
2370                 if (vp->rev.biuRev >= 1 && vp->rev.biuRev <= 3)
2371                         m = (typeof(m)){"LP7000", "PCI", ""};
2372                 else
2373                         m = (typeof(m)){"LP7000E", "PCI", ""};
2374                 m.function = "Obsolete, Unsupported Fibre Channel Adapter";
2375                 break;
2376         case PCI_DEVICE_ID_DRAGONFLY:
2377                 m = (typeof(m)){"LP8000", "PCI",
2378                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2379                 break;
2380         case PCI_DEVICE_ID_CENTAUR:
2381                 if (FC_JEDEC_ID(vp->rev.biuRev) == CENTAUR_2G_JEDEC_ID)
2382                         m = (typeof(m)){"LP9002", "PCI", ""};
2383                 else
2384                         m = (typeof(m)){"LP9000", "PCI", ""};
2385                 m.function = "Obsolete, Unsupported Fibre Channel Adapter";
2386                 break;
2387         case PCI_DEVICE_ID_RFLY:
2388                 m = (typeof(m)){"LP952", "PCI",
2389                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2390                 break;
2391         case PCI_DEVICE_ID_PEGASUS:
2392                 m = (typeof(m)){"LP9802", "PCI-X",
2393                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2394                 break;
2395         case PCI_DEVICE_ID_THOR:
2396                 m = (typeof(m)){"LP10000", "PCI-X",
2397                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2398                 break;
2399         case PCI_DEVICE_ID_VIPER:
2400                 m = (typeof(m)){"LPX1000",  "PCI-X",
2401                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2402                 break;
2403         case PCI_DEVICE_ID_PFLY:
2404                 m = (typeof(m)){"LP982", "PCI-X",
2405                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2406                 break;
2407         case PCI_DEVICE_ID_TFLY:
2408                 m = (typeof(m)){"LP1050", "PCI-X",
2409                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2410                 break;
2411         case PCI_DEVICE_ID_HELIOS:
2412                 m = (typeof(m)){"LP11000", "PCI-X2",
2413                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2414                 break;
2415         case PCI_DEVICE_ID_HELIOS_SCSP:
2416                 m = (typeof(m)){"LP11000-SP", "PCI-X2",
2417                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2418                 break;
2419         case PCI_DEVICE_ID_HELIOS_DCSP:
2420                 m = (typeof(m)){"LP11002-SP",  "PCI-X2",
2421                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2422                 break;
2423         case PCI_DEVICE_ID_NEPTUNE:
2424                 m = (typeof(m)){"LPe1000", "PCIe",
2425                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2426                 break;
2427         case PCI_DEVICE_ID_NEPTUNE_SCSP:
2428                 m = (typeof(m)){"LPe1000-SP", "PCIe",
2429                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2430                 break;
2431         case PCI_DEVICE_ID_NEPTUNE_DCSP:
2432                 m = (typeof(m)){"LPe1002-SP", "PCIe",
2433                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2434                 break;
2435         case PCI_DEVICE_ID_BMID:
2436                 m = (typeof(m)){"LP1150", "PCI-X2", "Fibre Channel Adapter"};
2437                 break;
2438         case PCI_DEVICE_ID_BSMB:
2439                 m = (typeof(m)){"LP111", "PCI-X2",
2440                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2441                 break;
2442         case PCI_DEVICE_ID_ZEPHYR:
2443                 m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
2444                 break;
2445         case PCI_DEVICE_ID_ZEPHYR_SCSP:
2446                 m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
2447                 break;
2448         case PCI_DEVICE_ID_ZEPHYR_DCSP:
2449                 m = (typeof(m)){"LP2105", "PCIe", "FCoE Adapter"};
2450                 GE = 1;
2451                 break;
2452         case PCI_DEVICE_ID_ZMID:
2453                 m = (typeof(m)){"LPe1150", "PCIe", "Fibre Channel Adapter"};
2454                 break;
2455         case PCI_DEVICE_ID_ZSMB:
2456                 m = (typeof(m)){"LPe111", "PCIe", "Fibre Channel Adapter"};
2457                 break;
2458         case PCI_DEVICE_ID_LP101:
2459                 m = (typeof(m)){"LP101", "PCI-X",
2460                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2461                 break;
2462         case PCI_DEVICE_ID_LP10000S:
2463                 m = (typeof(m)){"LP10000-S", "PCI",
2464                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2465                 break;
2466         case PCI_DEVICE_ID_LP11000S:
2467                 m = (typeof(m)){"LP11000-S", "PCI-X2",
2468                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2469                 break;
2470         case PCI_DEVICE_ID_LPE11000S:
2471                 m = (typeof(m)){"LPe11000-S", "PCIe",
2472                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2473                 break;
2474         case PCI_DEVICE_ID_SAT:
2475                 m = (typeof(m)){"LPe12000", "PCIe", "Fibre Channel Adapter"};
2476                 break;
2477         case PCI_DEVICE_ID_SAT_MID:
2478                 m = (typeof(m)){"LPe1250", "PCIe", "Fibre Channel Adapter"};
2479                 break;
2480         case PCI_DEVICE_ID_SAT_SMB:
2481                 m = (typeof(m)){"LPe121", "PCIe", "Fibre Channel Adapter"};
2482                 break;
2483         case PCI_DEVICE_ID_SAT_DCSP:
2484                 m = (typeof(m)){"LPe12002-SP", "PCIe", "Fibre Channel Adapter"};
2485                 break;
2486         case PCI_DEVICE_ID_SAT_SCSP:
2487                 m = (typeof(m)){"LPe12000-SP", "PCIe", "Fibre Channel Adapter"};
2488                 break;
2489         case PCI_DEVICE_ID_SAT_S:
2490                 m = (typeof(m)){"LPe12000-S", "PCIe", "Fibre Channel Adapter"};
2491                 break;
2492         case PCI_DEVICE_ID_HORNET:
2493                 m = (typeof(m)){"LP21000", "PCIe",
2494                                 "Obsolete, Unsupported FCoE Adapter"};
2495                 GE = 1;
2496                 break;
2497         case PCI_DEVICE_ID_PROTEUS_VF:
2498                 m = (typeof(m)){"LPev12000", "PCIe IOV",
2499                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2500                 break;
2501         case PCI_DEVICE_ID_PROTEUS_PF:
2502                 m = (typeof(m)){"LPev12000", "PCIe IOV",
2503                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2504                 break;
2505         case PCI_DEVICE_ID_PROTEUS_S:
2506                 m = (typeof(m)){"LPemv12002-S", "PCIe IOV",
2507                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2508                 break;
2509         case PCI_DEVICE_ID_TIGERSHARK:
2510                 oneConnect = 1;
2511                 m = (typeof(m)){"OCe10100", "PCIe", "FCoE"};
2512                 break;
2513         case PCI_DEVICE_ID_TOMCAT:
2514                 oneConnect = 1;
2515                 m = (typeof(m)){"OCe11100", "PCIe", "FCoE"};
2516                 break;
2517         case PCI_DEVICE_ID_FALCON:
2518                 m = (typeof(m)){"LPSe12002-ML1-E", "PCIe",
2519                                 "EmulexSecure Fibre"};
2520                 break;
2521         case PCI_DEVICE_ID_BALIUS:
2522                 m = (typeof(m)){"LPVe12002", "PCIe Shared I/O",
2523                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2524                 break;
2525         case PCI_DEVICE_ID_LANCER_FC:
2526                 m = (typeof(m)){"LPe16000", "PCIe", "Fibre Channel Adapter"};
2527                 break;
2528         case PCI_DEVICE_ID_LANCER_FC_VF:
2529                 m = (typeof(m)){"LPe16000", "PCIe",
2530                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2531                 break;
2532         case PCI_DEVICE_ID_LANCER_FCOE:
2533                 oneConnect = 1;
2534                 m = (typeof(m)){"OCe15100", "PCIe", "FCoE"};
2535                 break;
2536         case PCI_DEVICE_ID_LANCER_FCOE_VF:
2537                 oneConnect = 1;
2538                 m = (typeof(m)){"OCe15100", "PCIe",
2539                                 "Obsolete, Unsupported FCoE"};
2540                 break;
2541         case PCI_DEVICE_ID_LANCER_G6_FC:
2542                 m = (typeof(m)){"LPe32000", "PCIe", "Fibre Channel Adapter"};
2543                 break;
2544         case PCI_DEVICE_ID_LANCER_G7_FC:
2545                 m = (typeof(m)){"LPe36000", "PCIe", "Fibre Channel Adapter"};
2546                 break;
2547         case PCI_DEVICE_ID_SKYHAWK:
2548         case PCI_DEVICE_ID_SKYHAWK_VF:
2549                 oneConnect = 1;
2550                 m = (typeof(m)){"OCe14000", "PCIe", "FCoE"};
2551                 break;
2552         default:
2553                 m = (typeof(m)){"Unknown", "", ""};
2554                 break;
2555         }
2556
2557         if (mdp && mdp[0] == '\0')
2558                 snprintf(mdp, 79,"%s", m.name);
2559         /*
2560          * oneConnect hba requires special processing, they are all initiators
2561          * and we put the port number on the end
2562          */
2563         if (descp && descp[0] == '\0') {
2564                 if (oneConnect)
2565                         snprintf(descp, 255,
2566                                 "Emulex OneConnect %s, %s Initiator %s",
2567                                 m.name, m.function,
2568                                 phba->Port);
2569                 else if (max_speed == 0)
2570                         snprintf(descp, 255,
2571                                 "Emulex %s %s %s",
2572                                 m.name, m.bus, m.function);
2573                 else
2574                         snprintf(descp, 255,
2575                                 "Emulex %s %d%s %s %s",
2576                                 m.name, max_speed, (GE) ? "GE" : "Gb",
2577                                 m.bus, m.function);
2578         }
2579 }
2580
2581 /**
2582  * lpfc_post_buffer - Post IOCB(s) with DMA buffer descriptor(s) to a IOCB ring
2583  * @phba: pointer to lpfc hba data structure.
2584  * @pring: pointer to a IOCB ring.
2585  * @cnt: the number of IOCBs to be posted to the IOCB ring.
2586  *
2587  * This routine posts a given number of IOCBs with the associated DMA buffer
2588  * descriptors specified by the cnt argument to the given IOCB ring.
2589  *
2590  * Return codes
2591  *   The number of IOCBs NOT able to be posted to the IOCB ring.
2592  **/
2593 int
2594 lpfc_post_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, int cnt)
2595 {
2596         IOCB_t *icmd;
2597         struct lpfc_iocbq *iocb;
2598         struct lpfc_dmabuf *mp1, *mp2;
2599
2600         cnt += pring->missbufcnt;
2601
2602         /* While there are buffers to post */
2603         while (cnt > 0) {
2604                 /* Allocate buffer for  command iocb */
2605                 iocb = lpfc_sli_get_iocbq(phba);
2606                 if (iocb == NULL) {
2607                         pring->missbufcnt = cnt;
2608                         return cnt;
2609                 }
2610                 icmd = &iocb->iocb;
2611
2612                 /* 2 buffers can be posted per command */
2613                 /* Allocate buffer to post */
2614                 mp1 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
2615                 if (mp1)
2616                     mp1->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &mp1->phys);
2617                 if (!mp1 || !mp1->virt) {
2618                         kfree(mp1);
2619                         lpfc_sli_release_iocbq(phba, iocb);
2620                         pring->missbufcnt = cnt;
2621                         return cnt;
2622                 }
2623
2624                 INIT_LIST_HEAD(&mp1->list);
2625                 /* Allocate buffer to post */
2626                 if (cnt > 1) {
2627                         mp2 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
2628                         if (mp2)
2629                                 mp2->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
2630                                                             &mp2->phys);
2631                         if (!mp2 || !mp2->virt) {
2632                                 kfree(mp2);
2633                                 lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
2634                                 kfree(mp1);
2635                                 lpfc_sli_release_iocbq(phba, iocb);
2636                                 pring->missbufcnt = cnt;
2637                                 return cnt;
2638                         }
2639
2640                         INIT_LIST_HEAD(&mp2->list);
2641                 } else {
2642                         mp2 = NULL;
2643                 }
2644
2645                 icmd->un.cont64[0].addrHigh = putPaddrHigh(mp1->phys);
2646                 icmd->un.cont64[0].addrLow = putPaddrLow(mp1->phys);
2647                 icmd->un.cont64[0].tus.f.bdeSize = FCELSSIZE;
2648                 icmd->ulpBdeCount = 1;
2649                 cnt--;
2650                 if (mp2) {
2651                         icmd->un.cont64[1].addrHigh = putPaddrHigh(mp2->phys);
2652                         icmd->un.cont64[1].addrLow = putPaddrLow(mp2->phys);
2653                         icmd->un.cont64[1].tus.f.bdeSize = FCELSSIZE;
2654                         cnt--;
2655                         icmd->ulpBdeCount = 2;
2656                 }
2657
2658                 icmd->ulpCommand = CMD_QUE_RING_BUF64_CN;
2659                 icmd->ulpLe = 1;
2660
2661                 if (lpfc_sli_issue_iocb(phba, pring->ringno, iocb, 0) ==
2662                     IOCB_ERROR) {
2663                         lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
2664                         kfree(mp1);
2665                         cnt++;
2666                         if (mp2) {
2667                                 lpfc_mbuf_free(phba, mp2->virt, mp2->phys);
2668                                 kfree(mp2);
2669                                 cnt++;
2670                         }
2671                         lpfc_sli_release_iocbq(phba, iocb);
2672                         pring->missbufcnt = cnt;
2673                         return cnt;
2674                 }
2675                 lpfc_sli_ringpostbuf_put(phba, pring, mp1);
2676                 if (mp2)
2677                         lpfc_sli_ringpostbuf_put(phba, pring, mp2);
2678         }
2679         pring->missbufcnt = 0;
2680         return 0;
2681 }
2682
2683 /**
2684  * lpfc_post_rcv_buf - Post the initial receive IOCB buffers to ELS ring
2685  * @phba: pointer to lpfc hba data structure.
2686  *
2687  * This routine posts initial receive IOCB buffers to the ELS ring. The
2688  * current number of initial IOCB buffers specified by LPFC_BUF_RING0 is
2689  * set to 64 IOCBs. SLI3 only.
2690  *
2691  * Return codes
2692  *   0 - success (currently always success)
2693  **/
2694 static int
2695 lpfc_post_rcv_buf(struct lpfc_hba *phba)
2696 {
2697         struct lpfc_sli *psli = &phba->sli;
2698
2699         /* Ring 0, ELS / CT buffers */
2700         lpfc_post_buffer(phba, &psli->sli3_ring[LPFC_ELS_RING], LPFC_BUF_RING0);
2701         /* Ring 2 - FCP no buffers needed */
2702
2703         return 0;
2704 }
2705
2706 #define S(N,V) (((V)<<(N))|((V)>>(32-(N))))
2707
2708 /**
2709  * lpfc_sha_init - Set up initial array of hash table entries
2710  * @HashResultPointer: pointer to an array as hash table.
2711  *
2712  * This routine sets up the initial values to the array of hash table entries
2713  * for the LC HBAs.
2714  **/
2715 static void
2716 lpfc_sha_init(uint32_t * HashResultPointer)
2717 {
2718         HashResultPointer[0] = 0x67452301;
2719         HashResultPointer[1] = 0xEFCDAB89;
2720         HashResultPointer[2] = 0x98BADCFE;
2721         HashResultPointer[3] = 0x10325476;
2722         HashResultPointer[4] = 0xC3D2E1F0;
2723 }
2724
2725 /**
2726  * lpfc_sha_iterate - Iterate initial hash table with the working hash table
2727  * @HashResultPointer: pointer to an initial/result hash table.
2728  * @HashWorkingPointer: pointer to an working hash table.
2729  *
2730  * This routine iterates an initial hash table pointed by @HashResultPointer
2731  * with the values from the working hash table pointeed by @HashWorkingPointer.
2732  * The results are putting back to the initial hash table, returned through
2733  * the @HashResultPointer as the result hash table.
2734  **/
2735 static void
2736 lpfc_sha_iterate(uint32_t * HashResultPointer, uint32_t * HashWorkingPointer)
2737 {
2738         int t;
2739         uint32_t TEMP;
2740         uint32_t A, B, C, D, E;
2741         t = 16;
2742         do {
2743                 HashWorkingPointer[t] =
2744                     S(1,
2745                       HashWorkingPointer[t - 3] ^ HashWorkingPointer[t -
2746                                                                      8] ^
2747                       HashWorkingPointer[t - 14] ^ HashWorkingPointer[t - 16]);
2748         } while (++t <= 79);
2749         t = 0;
2750         A = HashResultPointer[0];
2751         B = HashResultPointer[1];
2752         C = HashResultPointer[2];
2753         D = HashResultPointer[3];
2754         E = HashResultPointer[4];
2755
2756         do {
2757                 if (t < 20) {
2758                         TEMP = ((B & C) | ((~B) & D)) + 0x5A827999;
2759                 } else if (t < 40) {
2760                         TEMP = (B ^ C ^ D) + 0x6ED9EBA1;
2761                 } else if (t < 60) {
2762                         TEMP = ((B & C) | (B & D) | (C & D)) + 0x8F1BBCDC;
2763                 } else {
2764                         TEMP = (B ^ C ^ D) + 0xCA62C1D6;
2765                 }
2766                 TEMP += S(5, A) + E + HashWorkingPointer[t];
2767                 E = D;
2768                 D = C;
2769                 C = S(30, B);
2770                 B = A;
2771                 A = TEMP;
2772         } while (++t <= 79);
2773
2774         HashResultPointer[0] += A;
2775         HashResultPointer[1] += B;
2776         HashResultPointer[2] += C;
2777         HashResultPointer[3] += D;
2778         HashResultPointer[4] += E;
2779
2780 }
2781
2782 /**
2783  * lpfc_challenge_key - Create challenge key based on WWPN of the HBA
2784  * @RandomChallenge: pointer to the entry of host challenge random number array.
2785  * @HashWorking: pointer to the entry of the working hash array.
2786  *
2787  * This routine calculates the working hash array referred by @HashWorking
2788  * from the challenge random numbers associated with the host, referred by
2789  * @RandomChallenge. The result is put into the entry of the working hash
2790  * array and returned by reference through @HashWorking.
2791  **/
2792 static void
2793 lpfc_challenge_key(uint32_t * RandomChallenge, uint32_t * HashWorking)
2794 {
2795         *HashWorking = (*RandomChallenge ^ *HashWorking);
2796 }
2797
2798 /**
2799  * lpfc_hba_init - Perform special handling for LC HBA initialization
2800  * @phba: pointer to lpfc hba data structure.
2801  * @hbainit: pointer to an array of unsigned 32-bit integers.
2802  *
2803  * This routine performs the special handling for LC HBA initialization.
2804  **/
2805 void
2806 lpfc_hba_init(struct lpfc_hba *phba, uint32_t *hbainit)
2807 {
2808         int t;
2809         uint32_t *HashWorking;
2810         uint32_t *pwwnn = (uint32_t *) phba->wwnn;
2811
2812         HashWorking = kcalloc(80, sizeof(uint32_t), GFP_KERNEL);
2813         if (!HashWorking)
2814                 return;
2815
2816         HashWorking[0] = HashWorking[78] = *pwwnn++;
2817         HashWorking[1] = HashWorking[79] = *pwwnn;
2818
2819         for (t = 0; t < 7; t++)
2820                 lpfc_challenge_key(phba->RandomData + t, HashWorking + t);
2821
2822         lpfc_sha_init(hbainit);
2823         lpfc_sha_iterate(hbainit, HashWorking);
2824         kfree(HashWorking);
2825 }
2826
2827 /**
2828  * lpfc_cleanup - Performs vport cleanups before deleting a vport
2829  * @vport: pointer to a virtual N_Port data structure.
2830  *
2831  * This routine performs the necessary cleanups before deleting the @vport.
2832  * It invokes the discovery state machine to perform necessary state
2833  * transitions and to release the ndlps associated with the @vport. Note,
2834  * the physical port is treated as @vport 0.
2835  **/
2836 void
2837 lpfc_cleanup(struct lpfc_vport *vport)
2838 {
2839         struct lpfc_hba   *phba = vport->phba;
2840         struct lpfc_nodelist *ndlp, *next_ndlp;
2841         int i = 0;
2842
2843         if (phba->link_state > LPFC_LINK_DOWN)
2844                 lpfc_port_link_failure(vport);
2845
2846         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
2847                 if (!NLP_CHK_NODE_ACT(ndlp)) {
2848                         ndlp = lpfc_enable_node(vport, ndlp,
2849                                                 NLP_STE_UNUSED_NODE);
2850                         if (!ndlp)
2851                                 continue;
2852                         spin_lock_irq(&phba->ndlp_lock);
2853                         NLP_SET_FREE_REQ(ndlp);
2854                         spin_unlock_irq(&phba->ndlp_lock);
2855                         /* Trigger the release of the ndlp memory */
2856                         lpfc_nlp_put(ndlp);
2857                         continue;
2858                 }
2859                 spin_lock_irq(&phba->ndlp_lock);
2860                 if (NLP_CHK_FREE_REQ(ndlp)) {
2861                         /* The ndlp should not be in memory free mode already */
2862                         spin_unlock_irq(&phba->ndlp_lock);
2863                         continue;
2864                 } else
2865                         /* Indicate request for freeing ndlp memory */
2866                         NLP_SET_FREE_REQ(ndlp);
2867                 spin_unlock_irq(&phba->ndlp_lock);
2868
2869                 if (vport->port_type != LPFC_PHYSICAL_PORT &&
2870                     ndlp->nlp_DID == Fabric_DID) {
2871                         /* Just free up ndlp with Fabric_DID for vports */
2872                         lpfc_nlp_put(ndlp);
2873                         continue;
2874                 }
2875
2876                 /* take care of nodes in unused state before the state
2877                  * machine taking action.
2878                  */
2879                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
2880                         lpfc_nlp_put(ndlp);
2881                         continue;
2882                 }
2883
2884                 if (ndlp->nlp_type & NLP_FABRIC)
2885                         lpfc_disc_state_machine(vport, ndlp, NULL,
2886                                         NLP_EVT_DEVICE_RECOVERY);
2887
2888                 lpfc_disc_state_machine(vport, ndlp, NULL,
2889                                              NLP_EVT_DEVICE_RM);
2890         }
2891
2892         /* At this point, ALL ndlp's should be gone
2893          * because of the previous NLP_EVT_DEVICE_RM.
2894          * Lets wait for this to happen, if needed.
2895          */
2896         while (!list_empty(&vport->fc_nodes)) {
2897                 if (i++ > 3000) {
2898                         lpfc_printf_vlog(vport, KERN_ERR,
2899                                          LOG_TRACE_EVENT,
2900                                 "0233 Nodelist not empty\n");
2901                         list_for_each_entry_safe(ndlp, next_ndlp,
2902                                                 &vport->fc_nodes, nlp_listp) {
2903                                 lpfc_printf_vlog(ndlp->vport, KERN_ERR,
2904                                                 LOG_TRACE_EVENT,
2905                                                 "0282 did:x%x ndlp:x%px "
2906                                                 "usgmap:x%x refcnt:%d\n",
2907                                                 ndlp->nlp_DID, (void *)ndlp,
2908                                                 ndlp->nlp_usg_map,
2909                                                 kref_read(&ndlp->kref));
2910                         }
2911                         break;
2912                 }
2913
2914                 /* Wait for any activity on ndlps to settle */
2915                 msleep(10);
2916         }
2917         lpfc_cleanup_vports_rrqs(vport, NULL);
2918 }
2919
2920 /**
2921  * lpfc_stop_vport_timers - Stop all the timers associated with a vport
2922  * @vport: pointer to a virtual N_Port data structure.
2923  *
2924  * This routine stops all the timers associated with a @vport. This function
2925  * is invoked before disabling or deleting a @vport. Note that the physical
2926  * port is treated as @vport 0.
2927  **/
2928 void
2929 lpfc_stop_vport_timers(struct lpfc_vport *vport)
2930 {
2931         del_timer_sync(&vport->els_tmofunc);
2932         del_timer_sync(&vport->delayed_disc_tmo);
2933         lpfc_can_disctmo(vport);
2934         return;
2935 }
2936
2937 /**
2938  * __lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
2939  * @phba: pointer to lpfc hba data structure.
2940  *
2941  * This routine stops the SLI4 FCF rediscover wait timer if it's on. The
2942  * caller of this routine should already hold the host lock.
2943  **/
2944 void
2945 __lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
2946 {
2947         /* Clear pending FCF rediscovery wait flag */
2948         phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
2949
2950         /* Now, try to stop the timer */
2951         del_timer(&phba->fcf.redisc_wait);
2952 }
2953
2954 /**
2955  * lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
2956  * @phba: pointer to lpfc hba data structure.
2957  *
2958  * This routine stops the SLI4 FCF rediscover wait timer if it's on. It
2959  * checks whether the FCF rediscovery wait timer is pending with the host
2960  * lock held before proceeding with disabling the timer and clearing the
2961  * wait timer pendig flag.
2962  **/
2963 void
2964 lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
2965 {
2966         spin_lock_irq(&phba->hbalock);
2967         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
2968                 /* FCF rediscovery timer already fired or stopped */
2969                 spin_unlock_irq(&phba->hbalock);
2970                 return;
2971         }
2972         __lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
2973         /* Clear failover in progress flags */
2974         phba->fcf.fcf_flag &= ~(FCF_DEAD_DISC | FCF_ACVL_DISC);
2975         spin_unlock_irq(&phba->hbalock);
2976 }
2977
2978 /**
2979  * lpfc_stop_hba_timers - Stop all the timers associated with an HBA
2980  * @phba: pointer to lpfc hba data structure.
2981  *
2982  * This routine stops all the timers associated with a HBA. This function is
2983  * invoked before either putting a HBA offline or unloading the driver.
2984  **/
2985 void
2986 lpfc_stop_hba_timers(struct lpfc_hba *phba)
2987 {
2988         if (phba->pport)
2989                 lpfc_stop_vport_timers(phba->pport);
2990         cancel_delayed_work_sync(&phba->eq_delay_work);
2991         cancel_delayed_work_sync(&phba->idle_stat_delay_work);
2992         del_timer_sync(&phba->sli.mbox_tmo);
2993         del_timer_sync(&phba->fabric_block_timer);
2994         del_timer_sync(&phba->eratt_poll);
2995         del_timer_sync(&phba->hb_tmofunc);
2996         if (phba->sli_rev == LPFC_SLI_REV4) {
2997                 del_timer_sync(&phba->rrq_tmr);
2998                 phba->hba_flag &= ~HBA_RRQ_ACTIVE;
2999         }
3000         phba->hb_outstanding = 0;
3001
3002         switch (phba->pci_dev_grp) {
3003         case LPFC_PCI_DEV_LP:
3004                 /* Stop any LightPulse device specific driver timers */
3005                 del_timer_sync(&phba->fcp_poll_timer);
3006                 break;
3007         case LPFC_PCI_DEV_OC:
3008                 /* Stop any OneConnect device specific driver timers */
3009                 lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
3010                 break;
3011         default:
3012                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3013                                 "0297 Invalid device group (x%x)\n",
3014                                 phba->pci_dev_grp);
3015                 break;
3016         }
3017         return;
3018 }
3019
3020 /**
3021  * lpfc_block_mgmt_io - Mark a HBA's management interface as blocked
3022  * @phba: pointer to lpfc hba data structure.
3023  * @mbx_action: flag for mailbox no wait action.
3024  *
3025  * This routine marks a HBA's management interface as blocked. Once the HBA's
3026  * management interface is marked as blocked, all the user space access to
3027  * the HBA, whether they are from sysfs interface or libdfc interface will
3028  * all be blocked. The HBA is set to block the management interface when the
3029  * driver prepares the HBA interface for online or offline.
3030  **/
3031 static void
3032 lpfc_block_mgmt_io(struct lpfc_hba *phba, int mbx_action)
3033 {
3034         unsigned long iflag;
3035         uint8_t actcmd = MBX_HEARTBEAT;
3036         unsigned long timeout;
3037
3038         spin_lock_irqsave(&phba->hbalock, iflag);
3039         phba->sli.sli_flag |= LPFC_BLOCK_MGMT_IO;
3040         spin_unlock_irqrestore(&phba->hbalock, iflag);
3041         if (mbx_action == LPFC_MBX_NO_WAIT)
3042                 return;
3043         timeout = msecs_to_jiffies(LPFC_MBOX_TMO * 1000) + jiffies;
3044         spin_lock_irqsave(&phba->hbalock, iflag);
3045         if (phba->sli.mbox_active) {
3046                 actcmd = phba->sli.mbox_active->u.mb.mbxCommand;
3047                 /* Determine how long we might wait for the active mailbox
3048                  * command to be gracefully completed by firmware.
3049                  */
3050                 timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba,
3051                                 phba->sli.mbox_active) * 1000) + jiffies;
3052         }
3053         spin_unlock_irqrestore(&phba->hbalock, iflag);
3054
3055         /* Wait for the outstnading mailbox command to complete */
3056         while (phba->sli.mbox_active) {
3057                 /* Check active mailbox complete status every 2ms */
3058                 msleep(2);
3059                 if (time_after(jiffies, timeout)) {
3060                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3061                                         "2813 Mgmt IO is Blocked %x "
3062                                         "- mbox cmd %x still active\n",
3063                                         phba->sli.sli_flag, actcmd);
3064                         break;
3065                 }
3066         }
3067 }
3068
3069 /**
3070  * lpfc_sli4_node_prep - Assign RPIs for active nodes.
3071  * @phba: pointer to lpfc hba data structure.
3072  *
3073  * Allocate RPIs for all active remote nodes. This is needed whenever
3074  * an SLI4 adapter is reset and the driver is not unloading. Its purpose
3075  * is to fixup the temporary rpi assignments.
3076  **/
3077 void
3078 lpfc_sli4_node_prep(struct lpfc_hba *phba)
3079 {
3080         struct lpfc_nodelist  *ndlp, *next_ndlp;
3081         struct lpfc_vport **vports;
3082         int i, rpi;
3083         unsigned long flags;
3084
3085         if (phba->sli_rev != LPFC_SLI_REV4)
3086                 return;
3087
3088         vports = lpfc_create_vport_work_array(phba);
3089         if (vports == NULL)
3090                 return;
3091
3092         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3093                 if (vports[i]->load_flag & FC_UNLOADING)
3094                         continue;
3095
3096                 list_for_each_entry_safe(ndlp, next_ndlp,
3097                                          &vports[i]->fc_nodes,
3098                                          nlp_listp) {
3099                         if (!NLP_CHK_NODE_ACT(ndlp))
3100                                 continue;
3101                         rpi = lpfc_sli4_alloc_rpi(phba);
3102                         if (rpi == LPFC_RPI_ALLOC_ERROR) {
3103                                 spin_lock_irqsave(&phba->ndlp_lock, flags);
3104                                 NLP_CLR_NODE_ACT(ndlp);
3105                                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3106                                 continue;
3107                         }
3108                         ndlp->nlp_rpi = rpi;
3109                         lpfc_printf_vlog(ndlp->vport, KERN_INFO,
3110                                          LOG_NODE | LOG_DISCOVERY,
3111                                          "0009 Assign RPI x%x to ndlp x%px "
3112                                          "DID:x%06x flg:x%x map:x%x\n",
3113                                          ndlp->nlp_rpi, ndlp, ndlp->nlp_DID,
3114                                          ndlp->nlp_flag, ndlp->nlp_usg_map);
3115                 }
3116         }
3117         lpfc_destroy_vport_work_array(phba, vports);
3118 }
3119
3120 /**
3121  * lpfc_create_expedite_pool - create expedite pool
3122  * @phba: pointer to lpfc hba data structure.
3123  *
3124  * This routine moves a batch of XRIs from lpfc_io_buf_list_put of HWQ 0
3125  * to expedite pool. Mark them as expedite.
3126  **/
3127 static void lpfc_create_expedite_pool(struct lpfc_hba *phba)
3128 {
3129         struct lpfc_sli4_hdw_queue *qp;
3130         struct lpfc_io_buf *lpfc_ncmd;
3131         struct lpfc_io_buf *lpfc_ncmd_next;
3132         struct lpfc_epd_pool *epd_pool;
3133         unsigned long iflag;
3134
3135         epd_pool = &phba->epd_pool;
3136         qp = &phba->sli4_hba.hdwq[0];
3137
3138         spin_lock_init(&epd_pool->lock);
3139         spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
3140         spin_lock(&epd_pool->lock);
3141         INIT_LIST_HEAD(&epd_pool->list);
3142         list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3143                                  &qp->lpfc_io_buf_list_put, list) {
3144                 list_move_tail(&lpfc_ncmd->list, &epd_pool->list);
3145                 lpfc_ncmd->expedite = true;
3146                 qp->put_io_bufs--;
3147                 epd_pool->count++;
3148                 if (epd_pool->count >= XRI_BATCH)
3149                         break;
3150         }
3151         spin_unlock(&epd_pool->lock);
3152         spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
3153 }
3154
3155 /**
3156  * lpfc_destroy_expedite_pool - destroy expedite pool
3157  * @phba: pointer to lpfc hba data structure.
3158  *
3159  * This routine returns XRIs from expedite pool to lpfc_io_buf_list_put
3160  * of HWQ 0. Clear the mark.
3161  **/
3162 static void lpfc_destroy_expedite_pool(struct lpfc_hba *phba)
3163 {
3164         struct lpfc_sli4_hdw_queue *qp;
3165         struct lpfc_io_buf *lpfc_ncmd;
3166         struct lpfc_io_buf *lpfc_ncmd_next;
3167         struct lpfc_epd_pool *epd_pool;
3168         unsigned long iflag;
3169
3170         epd_pool = &phba->epd_pool;
3171         qp = &phba->sli4_hba.hdwq[0];
3172
3173         spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
3174         spin_lock(&epd_pool->lock);
3175         list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3176                                  &epd_pool->list, list) {
3177                 list_move_tail(&lpfc_ncmd->list,
3178                                &qp->lpfc_io_buf_list_put);
3179                 lpfc_ncmd->flags = false;
3180                 qp->put_io_bufs++;
3181                 epd_pool->count--;
3182         }
3183         spin_unlock(&epd_pool->lock);
3184         spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
3185 }
3186
3187 /**
3188  * lpfc_create_multixri_pools - create multi-XRI pools
3189  * @phba: pointer to lpfc hba data structure.
3190  *
3191  * This routine initialize public, private per HWQ. Then, move XRIs from
3192  * lpfc_io_buf_list_put to public pool. High and low watermark are also
3193  * Initialized.
3194  **/
3195 void lpfc_create_multixri_pools(struct lpfc_hba *phba)
3196 {
3197         u32 i, j;
3198         u32 hwq_count;
3199         u32 count_per_hwq;
3200         struct lpfc_io_buf *lpfc_ncmd;
3201         struct lpfc_io_buf *lpfc_ncmd_next;
3202         unsigned long iflag;
3203         struct lpfc_sli4_hdw_queue *qp;
3204         struct lpfc_multixri_pool *multixri_pool;
3205         struct lpfc_pbl_pool *pbl_pool;
3206         struct lpfc_pvt_pool *pvt_pool;
3207
3208         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3209                         "1234 num_hdw_queue=%d num_present_cpu=%d common_xri_cnt=%d\n",
3210                         phba->cfg_hdw_queue, phba->sli4_hba.num_present_cpu,
3211                         phba->sli4_hba.io_xri_cnt);
3212
3213         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
3214                 lpfc_create_expedite_pool(phba);
3215
3216         hwq_count = phba->cfg_hdw_queue;
3217         count_per_hwq = phba->sli4_hba.io_xri_cnt / hwq_count;
3218
3219         for (i = 0; i < hwq_count; i++) {
3220                 multixri_pool = kzalloc(sizeof(*multixri_pool), GFP_KERNEL);
3221
3222                 if (!multixri_pool) {
3223                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3224                                         "1238 Failed to allocate memory for "
3225                                         "multixri_pool\n");
3226
3227                         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
3228                                 lpfc_destroy_expedite_pool(phba);
3229
3230                         j = 0;
3231                         while (j < i) {
3232                                 qp = &phba->sli4_hba.hdwq[j];
3233                                 kfree(qp->p_multixri_pool);
3234                                 j++;
3235                         }
3236                         phba->cfg_xri_rebalancing = 0;
3237                         return;
3238                 }
3239
3240                 qp = &phba->sli4_hba.hdwq[i];
3241                 qp->p_multixri_pool = multixri_pool;
3242
3243                 multixri_pool->xri_limit = count_per_hwq;
3244                 multixri_pool->rrb_next_hwqid = i;
3245
3246                 /* Deal with public free xri pool */
3247                 pbl_pool = &multixri_pool->pbl_pool;
3248                 spin_lock_init(&pbl_pool->lock);
3249                 spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
3250                 spin_lock(&pbl_pool->lock);
3251                 INIT_LIST_HEAD(&pbl_pool->list);
3252                 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3253                                          &qp->lpfc_io_buf_list_put, list) {
3254                         list_move_tail(&lpfc_ncmd->list, &pbl_pool->list);
3255                         qp->put_io_bufs--;
3256                         pbl_pool->count++;
3257                 }
3258                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3259                                 "1235 Moved %d buffers from PUT list over to pbl_pool[%d]\n",
3260                                 pbl_pool->count, i);
3261                 spin_unlock(&pbl_pool->lock);
3262                 spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
3263
3264                 /* Deal with private free xri pool */
3265                 pvt_pool = &multixri_pool->pvt_pool;
3266                 pvt_pool->high_watermark = multixri_pool->xri_limit / 2;
3267                 pvt_pool->low_watermark = XRI_BATCH;
3268                 spin_lock_init(&pvt_pool->lock);
3269                 spin_lock_irqsave(&pvt_pool->lock, iflag);
3270                 INIT_LIST_HEAD(&pvt_pool->list);
3271                 pvt_pool->count = 0;
3272                 spin_unlock_irqrestore(&pvt_pool->lock, iflag);
3273         }
3274 }
3275
3276 /**
3277  * lpfc_destroy_multixri_pools - destroy multi-XRI pools
3278  * @phba: pointer to lpfc hba data structure.
3279  *
3280  * This routine returns XRIs from public/private to lpfc_io_buf_list_put.
3281  **/
3282 static void lpfc_destroy_multixri_pools(struct lpfc_hba *phba)
3283 {
3284         u32 i;
3285         u32 hwq_count;
3286         struct lpfc_io_buf *lpfc_ncmd;
3287         struct lpfc_io_buf *lpfc_ncmd_next;
3288         unsigned long iflag;
3289         struct lpfc_sli4_hdw_queue *qp;
3290         struct lpfc_multixri_pool *multixri_pool;
3291         struct lpfc_pbl_pool *pbl_pool;
3292         struct lpfc_pvt_pool *pvt_pool;
3293
3294         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
3295                 lpfc_destroy_expedite_pool(phba);
3296
3297         if (!(phba->pport->load_flag & FC_UNLOADING))
3298                 lpfc_sli_flush_io_rings(phba);
3299
3300         hwq_count = phba->cfg_hdw_queue;
3301
3302         for (i = 0; i < hwq_count; i++) {
3303                 qp = &phba->sli4_hba.hdwq[i];
3304                 multixri_pool = qp->p_multixri_pool;
3305                 if (!multixri_pool)
3306                         continue;
3307
3308                 qp->p_multixri_pool = NULL;
3309
3310                 spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
3311
3312                 /* Deal with public free xri pool */
3313                 pbl_pool = &multixri_pool->pbl_pool;
3314                 spin_lock(&pbl_pool->lock);
3315
3316                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3317                                 "1236 Moving %d buffers from pbl_pool[%d] TO PUT list\n",
3318                                 pbl_pool->count, i);
3319
3320                 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3321                                          &pbl_pool->list, list) {
3322                         list_move_tail(&lpfc_ncmd->list,
3323                                        &qp->lpfc_io_buf_list_put);
3324                         qp->put_io_bufs++;
3325                         pbl_pool->count--;
3326                 }
3327
3328                 INIT_LIST_HEAD(&pbl_pool->list);
3329                 pbl_pool->count = 0;
3330
3331                 spin_unlock(&pbl_pool->lock);
3332
3333                 /* Deal with private free xri pool */
3334                 pvt_pool = &multixri_pool->pvt_pool;
3335                 spin_lock(&pvt_pool->lock);
3336
3337                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3338                                 "1237 Moving %d buffers from pvt_pool[%d] TO PUT list\n",
3339                                 pvt_pool->count, i);
3340
3341                 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3342                                          &pvt_pool->list, list) {
3343                         list_move_tail(&lpfc_ncmd->list,
3344                                        &qp->lpfc_io_buf_list_put);
3345                         qp->put_io_bufs++;
3346                         pvt_pool->count--;
3347                 }
3348
3349                 INIT_LIST_HEAD(&pvt_pool->list);
3350                 pvt_pool->count = 0;
3351
3352                 spin_unlock(&pvt_pool->lock);
3353                 spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
3354
3355                 kfree(multixri_pool);
3356         }
3357 }
3358
3359 /**
3360  * lpfc_online - Initialize and bring a HBA online
3361  * @phba: pointer to lpfc hba data structure.
3362  *
3363  * This routine initializes the HBA and brings a HBA online. During this
3364  * process, the management interface is blocked to prevent user space access
3365  * to the HBA interfering with the driver initialization.
3366  *
3367  * Return codes
3368  *   0 - successful
3369  *   1 - failed
3370  **/
3371 int
3372 lpfc_online(struct lpfc_hba *phba)
3373 {
3374         struct lpfc_vport *vport;
3375         struct lpfc_vport **vports;
3376         int i, error = 0;
3377         bool vpis_cleared = false;
3378
3379         if (!phba)
3380                 return 0;
3381         vport = phba->pport;
3382
3383         if (!(vport->fc_flag & FC_OFFLINE_MODE))
3384                 return 0;
3385
3386         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3387                         "0458 Bring Adapter online\n");
3388
3389         lpfc_block_mgmt_io(phba, LPFC_MBX_WAIT);
3390
3391         if (phba->sli_rev == LPFC_SLI_REV4) {
3392                 if (lpfc_sli4_hba_setup(phba)) { /* Initialize SLI4 HBA */
3393                         lpfc_unblock_mgmt_io(phba);
3394                         return 1;
3395                 }
3396                 spin_lock_irq(&phba->hbalock);
3397                 if (!phba->sli4_hba.max_cfg_param.vpi_used)
3398                         vpis_cleared = true;
3399                 spin_unlock_irq(&phba->hbalock);
3400
3401                 /* Reestablish the local initiator port.
3402                  * The offline process destroyed the previous lport.
3403                  */
3404                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME &&
3405                                 !phba->nvmet_support) {
3406                         error = lpfc_nvme_create_localport(phba->pport);
3407                         if (error)
3408                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3409                                         "6132 NVME restore reg failed "
3410                                         "on nvmei error x%x\n", error);
3411                 }
3412         } else {
3413                 lpfc_sli_queue_init(phba);
3414                 if (lpfc_sli_hba_setup(phba)) { /* Initialize SLI2/SLI3 HBA */
3415                         lpfc_unblock_mgmt_io(phba);
3416                         return 1;
3417                 }
3418         }
3419
3420         vports = lpfc_create_vport_work_array(phba);
3421         if (vports != NULL) {
3422                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3423                         struct Scsi_Host *shost;
3424                         shost = lpfc_shost_from_vport(vports[i]);
3425                         spin_lock_irq(shost->host_lock);
3426                         vports[i]->fc_flag &= ~FC_OFFLINE_MODE;
3427                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
3428                                 vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3429                         if (phba->sli_rev == LPFC_SLI_REV4) {
3430                                 vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
3431                                 if ((vpis_cleared) &&
3432                                     (vports[i]->port_type !=
3433                                         LPFC_PHYSICAL_PORT))
3434                                         vports[i]->vpi = 0;
3435                         }
3436                         spin_unlock_irq(shost->host_lock);
3437                 }
3438         }
3439         lpfc_destroy_vport_work_array(phba, vports);
3440
3441         if (phba->cfg_xri_rebalancing)
3442                 lpfc_create_multixri_pools(phba);
3443
3444         lpfc_cpuhp_add(phba);
3445
3446         lpfc_unblock_mgmt_io(phba);
3447         return 0;
3448 }
3449
3450 /**
3451  * lpfc_unblock_mgmt_io - Mark a HBA's management interface to be not blocked
3452  * @phba: pointer to lpfc hba data structure.
3453  *
3454  * This routine marks a HBA's management interface as not blocked. Once the
3455  * HBA's management interface is marked as not blocked, all the user space
3456  * access to the HBA, whether they are from sysfs interface or libdfc
3457  * interface will be allowed. The HBA is set to block the management interface
3458  * when the driver prepares the HBA interface for online or offline and then
3459  * set to unblock the management interface afterwards.
3460  **/
3461 void
3462 lpfc_unblock_mgmt_io(struct lpfc_hba * phba)
3463 {
3464         unsigned long iflag;
3465
3466         spin_lock_irqsave(&phba->hbalock, iflag);
3467         phba->sli.sli_flag &= ~LPFC_BLOCK_MGMT_IO;
3468         spin_unlock_irqrestore(&phba->hbalock, iflag);
3469 }
3470
3471 /**
3472  * lpfc_offline_prep - Prepare a HBA to be brought offline
3473  * @phba: pointer to lpfc hba data structure.
3474  * @mbx_action: flag for mailbox shutdown action.
3475  *
3476  * This routine is invoked to prepare a HBA to be brought offline. It performs
3477  * unregistration login to all the nodes on all vports and flushes the mailbox
3478  * queue to make it ready to be brought offline.
3479  **/
3480 void
3481 lpfc_offline_prep(struct lpfc_hba *phba, int mbx_action)
3482 {
3483         struct lpfc_vport *vport = phba->pport;
3484         struct lpfc_nodelist  *ndlp, *next_ndlp;
3485         struct lpfc_vport **vports;
3486         struct Scsi_Host *shost;
3487         int i;
3488
3489         if (vport->fc_flag & FC_OFFLINE_MODE)
3490                 return;
3491
3492         lpfc_block_mgmt_io(phba, mbx_action);
3493
3494         lpfc_linkdown(phba);
3495
3496         /* Issue an unreg_login to all nodes on all vports */
3497         vports = lpfc_create_vport_work_array(phba);
3498         if (vports != NULL) {
3499                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3500                         if (vports[i]->load_flag & FC_UNLOADING)
3501                                 continue;
3502                         shost = lpfc_shost_from_vport(vports[i]);
3503                         spin_lock_irq(shost->host_lock);
3504                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
3505                         vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3506                         vports[i]->fc_flag &= ~FC_VFI_REGISTERED;
3507                         spin_unlock_irq(shost->host_lock);
3508
3509                         shost = lpfc_shost_from_vport(vports[i]);
3510                         list_for_each_entry_safe(ndlp, next_ndlp,
3511                                                  &vports[i]->fc_nodes,
3512                                                  nlp_listp) {
3513                                 if ((!NLP_CHK_NODE_ACT(ndlp)) ||
3514                                     ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
3515                                         /* Driver must assume RPI is invalid for
3516                                          * any unused or inactive node.
3517                                          */
3518                                         ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
3519                                         continue;
3520                                 }
3521
3522                                 if (ndlp->nlp_type & NLP_FABRIC) {
3523                                         lpfc_disc_state_machine(vports[i], ndlp,
3524                                                 NULL, NLP_EVT_DEVICE_RECOVERY);
3525                                         lpfc_disc_state_machine(vports[i], ndlp,
3526                                                 NULL, NLP_EVT_DEVICE_RM);
3527                                 }
3528                                 spin_lock_irq(shost->host_lock);
3529                                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
3530                                 spin_unlock_irq(shost->host_lock);
3531                                 /*
3532                                  * Whenever an SLI4 port goes offline, free the
3533                                  * RPI. Get a new RPI when the adapter port
3534                                  * comes back online.
3535                                  */
3536                                 if (phba->sli_rev == LPFC_SLI_REV4) {
3537                                         lpfc_printf_vlog(ndlp->vport, KERN_INFO,
3538                                                  LOG_NODE | LOG_DISCOVERY,
3539                                                  "0011 Free RPI x%x on "
3540                                                  "ndlp:x%px did x%x "
3541                                                  "usgmap:x%x\n",
3542                                                  ndlp->nlp_rpi, ndlp,
3543                                                  ndlp->nlp_DID,
3544                                                  ndlp->nlp_usg_map);
3545                                         lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi);
3546                                         ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
3547                                 }
3548                                 lpfc_unreg_rpi(vports[i], ndlp);
3549                         }
3550                 }
3551         }
3552         lpfc_destroy_vport_work_array(phba, vports);
3553
3554         lpfc_sli_mbox_sys_shutdown(phba, mbx_action);
3555
3556         if (phba->wq)
3557                 flush_workqueue(phba->wq);
3558 }
3559
3560 /**
3561  * lpfc_offline - Bring a HBA offline
3562  * @phba: pointer to lpfc hba data structure.
3563  *
3564  * This routine actually brings a HBA offline. It stops all the timers
3565  * associated with the HBA, brings down the SLI layer, and eventually
3566  * marks the HBA as in offline state for the upper layer protocol.
3567  **/
3568 void
3569 lpfc_offline(struct lpfc_hba *phba)
3570 {
3571         struct Scsi_Host  *shost;
3572         struct lpfc_vport **vports;
3573         int i;
3574
3575         if (phba->pport->fc_flag & FC_OFFLINE_MODE)
3576                 return;
3577
3578         /* stop port and all timers associated with this hba */
3579         lpfc_stop_port(phba);
3580
3581         /* Tear down the local and target port registrations.  The
3582          * nvme transports need to cleanup.
3583          */
3584         lpfc_nvmet_destroy_targetport(phba);
3585         lpfc_nvme_destroy_localport(phba->pport);
3586
3587         vports = lpfc_create_vport_work_array(phba);
3588         if (vports != NULL)
3589                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
3590                         lpfc_stop_vport_timers(vports[i]);
3591         lpfc_destroy_vport_work_array(phba, vports);
3592         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3593                         "0460 Bring Adapter offline\n");
3594         /* Bring down the SLI Layer and cleanup.  The HBA is offline
3595            now.  */
3596         lpfc_sli_hba_down(phba);
3597         spin_lock_irq(&phba->hbalock);
3598         phba->work_ha = 0;
3599         spin_unlock_irq(&phba->hbalock);
3600         vports = lpfc_create_vport_work_array(phba);
3601         if (vports != NULL)
3602                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3603                         shost = lpfc_shost_from_vport(vports[i]);
3604                         spin_lock_irq(shost->host_lock);
3605                         vports[i]->work_port_events = 0;
3606                         vports[i]->fc_flag |= FC_OFFLINE_MODE;
3607                         spin_unlock_irq(shost->host_lock);
3608                 }
3609         lpfc_destroy_vport_work_array(phba, vports);
3610         __lpfc_cpuhp_remove(phba);
3611
3612         if (phba->cfg_xri_rebalancing)
3613                 lpfc_destroy_multixri_pools(phba);
3614 }
3615
3616 /**
3617  * lpfc_scsi_free - Free all the SCSI buffers and IOCBs from driver lists
3618  * @phba: pointer to lpfc hba data structure.
3619  *
3620  * This routine is to free all the SCSI buffers and IOCBs from the driver
3621  * list back to kernel. It is called from lpfc_pci_remove_one to free
3622  * the internal resources before the device is removed from the system.
3623  **/
3624 static void
3625 lpfc_scsi_free(struct lpfc_hba *phba)
3626 {
3627         struct lpfc_io_buf *sb, *sb_next;
3628
3629         if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
3630                 return;
3631
3632         spin_lock_irq(&phba->hbalock);
3633
3634         /* Release all the lpfc_scsi_bufs maintained by this host. */
3635
3636         spin_lock(&phba->scsi_buf_list_put_lock);
3637         list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list_put,
3638                                  list) {
3639                 list_del(&sb->list);
3640                 dma_pool_free(phba->lpfc_sg_dma_buf_pool, sb->data,
3641                               sb->dma_handle);
3642                 kfree(sb);
3643                 phba->total_scsi_bufs--;
3644         }
3645         spin_unlock(&phba->scsi_buf_list_put_lock);
3646
3647         spin_lock(&phba->scsi_buf_list_get_lock);
3648         list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list_get,
3649                                  list) {
3650                 list_del(&sb->list);
3651                 dma_pool_free(phba->lpfc_sg_dma_buf_pool, sb->data,
3652                               sb->dma_handle);
3653                 kfree(sb);
3654                 phba->total_scsi_bufs--;
3655         }
3656         spin_unlock(&phba->scsi_buf_list_get_lock);
3657         spin_unlock_irq(&phba->hbalock);
3658 }
3659
3660 /**
3661  * lpfc_io_free - Free all the IO buffers and IOCBs from driver lists
3662  * @phba: pointer to lpfc hba data structure.
3663  *
3664  * This routine is to free all the IO buffers and IOCBs from the driver
3665  * list back to kernel. It is called from lpfc_pci_remove_one to free
3666  * the internal resources before the device is removed from the system.
3667  **/
3668 void
3669 lpfc_io_free(struct lpfc_hba *phba)
3670 {
3671         struct lpfc_io_buf *lpfc_ncmd, *lpfc_ncmd_next;
3672         struct lpfc_sli4_hdw_queue *qp;
3673         int idx;
3674
3675         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
3676                 qp = &phba->sli4_hba.hdwq[idx];
3677                 /* Release all the lpfc_nvme_bufs maintained by this host. */
3678                 spin_lock(&qp->io_buf_list_put_lock);
3679                 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3680                                          &qp->lpfc_io_buf_list_put,
3681                                          list) {
3682                         list_del(&lpfc_ncmd->list);
3683                         qp->put_io_bufs--;
3684                         dma_pool_free(phba->lpfc_sg_dma_buf_pool,
3685                                       lpfc_ncmd->data, lpfc_ncmd->dma_handle);
3686                         if (phba->cfg_xpsgl && !phba->nvmet_support)
3687                                 lpfc_put_sgl_per_hdwq(phba, lpfc_ncmd);
3688                         lpfc_put_cmd_rsp_buf_per_hdwq(phba, lpfc_ncmd);
3689                         kfree(lpfc_ncmd);
3690                         qp->total_io_bufs--;
3691                 }
3692                 spin_unlock(&qp->io_buf_list_put_lock);
3693
3694                 spin_lock(&qp->io_buf_list_get_lock);
3695                 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3696                                          &qp->lpfc_io_buf_list_get,
3697                                          list) {
3698                         list_del(&lpfc_ncmd->list);
3699                         qp->get_io_bufs--;
3700                         dma_pool_free(phba->lpfc_sg_dma_buf_pool,
3701                                       lpfc_ncmd->data, lpfc_ncmd->dma_handle);
3702                         if (phba->cfg_xpsgl && !phba->nvmet_support)
3703                                 lpfc_put_sgl_per_hdwq(phba, lpfc_ncmd);
3704                         lpfc_put_cmd_rsp_buf_per_hdwq(phba, lpfc_ncmd);
3705                         kfree(lpfc_ncmd);
3706                         qp->total_io_bufs--;
3707                 }
3708                 spin_unlock(&qp->io_buf_list_get_lock);
3709         }
3710 }
3711
3712 /**
3713  * lpfc_sli4_els_sgl_update - update ELS xri-sgl sizing and mapping
3714  * @phba: pointer to lpfc hba data structure.
3715  *
3716  * This routine first calculates the sizes of the current els and allocated
3717  * scsi sgl lists, and then goes through all sgls to updates the physical
3718  * XRIs assigned due to port function reset. During port initialization, the
3719  * current els and allocated scsi sgl lists are 0s.
3720  *
3721  * Return codes
3722  *   0 - successful (for now, it always returns 0)
3723  **/
3724 int
3725 lpfc_sli4_els_sgl_update(struct lpfc_hba *phba)
3726 {
3727         struct lpfc_sglq *sglq_entry = NULL, *sglq_entry_next = NULL;
3728         uint16_t i, lxri, xri_cnt, els_xri_cnt;
3729         LIST_HEAD(els_sgl_list);
3730         int rc;
3731
3732         /*
3733          * update on pci function's els xri-sgl list
3734          */
3735         els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
3736
3737         if (els_xri_cnt > phba->sli4_hba.els_xri_cnt) {
3738                 /* els xri-sgl expanded */
3739                 xri_cnt = els_xri_cnt - phba->sli4_hba.els_xri_cnt;
3740                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3741                                 "3157 ELS xri-sgl count increased from "
3742                                 "%d to %d\n", phba->sli4_hba.els_xri_cnt,
3743                                 els_xri_cnt);
3744                 /* allocate the additional els sgls */
3745                 for (i = 0; i < xri_cnt; i++) {
3746                         sglq_entry = kzalloc(sizeof(struct lpfc_sglq),
3747                                              GFP_KERNEL);
3748                         if (sglq_entry == NULL) {
3749                                 lpfc_printf_log(phba, KERN_ERR,
3750                                                 LOG_TRACE_EVENT,
3751                                                 "2562 Failure to allocate an "
3752                                                 "ELS sgl entry:%d\n", i);
3753                                 rc = -ENOMEM;
3754                                 goto out_free_mem;
3755                         }
3756                         sglq_entry->buff_type = GEN_BUFF_TYPE;
3757                         sglq_entry->virt = lpfc_mbuf_alloc(phba, 0,
3758                                                            &sglq_entry->phys);
3759                         if (sglq_entry->virt == NULL) {
3760                                 kfree(sglq_entry);
3761                                 lpfc_printf_log(phba, KERN_ERR,
3762                                                 LOG_TRACE_EVENT,
3763                                                 "2563 Failure to allocate an "
3764                                                 "ELS mbuf:%d\n", i);
3765                                 rc = -ENOMEM;
3766                                 goto out_free_mem;
3767                         }
3768                         sglq_entry->sgl = sglq_entry->virt;
3769                         memset(sglq_entry->sgl, 0, LPFC_BPL_SIZE);
3770                         sglq_entry->state = SGL_FREED;
3771                         list_add_tail(&sglq_entry->list, &els_sgl_list);
3772                 }
3773                 spin_lock_irq(&phba->hbalock);
3774                 spin_lock(&phba->sli4_hba.sgl_list_lock);
3775                 list_splice_init(&els_sgl_list,
3776                                  &phba->sli4_hba.lpfc_els_sgl_list);
3777                 spin_unlock(&phba->sli4_hba.sgl_list_lock);
3778                 spin_unlock_irq(&phba->hbalock);
3779         } else if (els_xri_cnt < phba->sli4_hba.els_xri_cnt) {
3780                 /* els xri-sgl shrinked */
3781                 xri_cnt = phba->sli4_hba.els_xri_cnt - els_xri_cnt;
3782                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3783                                 "3158 ELS xri-sgl count decreased from "
3784                                 "%d to %d\n", phba->sli4_hba.els_xri_cnt,
3785                                 els_xri_cnt);
3786                 spin_lock_irq(&phba->hbalock);
3787                 spin_lock(&phba->sli4_hba.sgl_list_lock);
3788                 list_splice_init(&phba->sli4_hba.lpfc_els_sgl_list,
3789                                  &els_sgl_list);
3790                 /* release extra els sgls from list */
3791                 for (i = 0; i < xri_cnt; i++) {
3792                         list_remove_head(&els_sgl_list,
3793                                          sglq_entry, struct lpfc_sglq, list);
3794                         if (sglq_entry) {
3795                                 __lpfc_mbuf_free(phba, sglq_entry->virt,
3796                                                  sglq_entry->phys);
3797                                 kfree(sglq_entry);
3798                         }
3799                 }
3800                 list_splice_init(&els_sgl_list,
3801                                  &phba->sli4_hba.lpfc_els_sgl_list);
3802                 spin_unlock(&phba->sli4_hba.sgl_list_lock);
3803                 spin_unlock_irq(&phba->hbalock);
3804         } else
3805                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3806                                 "3163 ELS xri-sgl count unchanged: %d\n",
3807                                 els_xri_cnt);
3808         phba->sli4_hba.els_xri_cnt = els_xri_cnt;
3809
3810         /* update xris to els sgls on the list */
3811         sglq_entry = NULL;
3812         sglq_entry_next = NULL;
3813         list_for_each_entry_safe(sglq_entry, sglq_entry_next,
3814                                  &phba->sli4_hba.lpfc_els_sgl_list, list) {
3815                 lxri = lpfc_sli4_next_xritag(phba);
3816                 if (lxri == NO_XRI) {
3817                         lpfc_printf_log(phba, KERN_ERR,
3818                                         LOG_TRACE_EVENT,
3819                                         "2400 Failed to allocate xri for "
3820                                         "ELS sgl\n");
3821                         rc = -ENOMEM;
3822                         goto out_free_mem;
3823                 }
3824                 sglq_entry->sli4_lxritag = lxri;
3825                 sglq_entry->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
3826         }
3827         return 0;
3828
3829 out_free_mem:
3830         lpfc_free_els_sgl_list(phba);
3831         return rc;
3832 }
3833
3834 /**
3835  * lpfc_sli4_nvmet_sgl_update - update xri-sgl sizing and mapping
3836  * @phba: pointer to lpfc hba data structure.
3837  *
3838  * This routine first calculates the sizes of the current els and allocated
3839  * scsi sgl lists, and then goes through all sgls to updates the physical
3840  * XRIs assigned due to port function reset. During port initialization, the
3841  * current els and allocated scsi sgl lists are 0s.
3842  *
3843  * Return codes
3844  *   0 - successful (for now, it always returns 0)
3845  **/
3846 int
3847 lpfc_sli4_nvmet_sgl_update(struct lpfc_hba *phba)
3848 {
3849         struct lpfc_sglq *sglq_entry = NULL, *sglq_entry_next = NULL;
3850         uint16_t i, lxri, xri_cnt, els_xri_cnt;
3851         uint16_t nvmet_xri_cnt;
3852         LIST_HEAD(nvmet_sgl_list);
3853         int rc;
3854
3855         /*
3856          * update on pci function's nvmet xri-sgl list
3857          */
3858         els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
3859
3860         /* For NVMET, ALL remaining XRIs are dedicated for IO processing */
3861         nvmet_xri_cnt = phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt;
3862         if (nvmet_xri_cnt > phba->sli4_hba.nvmet_xri_cnt) {
3863                 /* els xri-sgl expanded */
3864                 xri_cnt = nvmet_xri_cnt - phba->sli4_hba.nvmet_xri_cnt;
3865                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3866                                 "6302 NVMET xri-sgl cnt grew from %d to %d\n",
3867                                 phba->sli4_hba.nvmet_xri_cnt, nvmet_xri_cnt);
3868                 /* allocate the additional nvmet sgls */
3869                 for (i = 0; i < xri_cnt; i++) {
3870                         sglq_entry = kzalloc(sizeof(struct lpfc_sglq),
3871                                              GFP_KERNEL);
3872                         if (sglq_entry == NULL) {
3873                                 lpfc_printf_log(phba, KERN_ERR,
3874                                                 LOG_TRACE_EVENT,
3875                                                 "6303 Failure to allocate an "
3876                                                 "NVMET sgl entry:%d\n", i);
3877                                 rc = -ENOMEM;
3878                                 goto out_free_mem;
3879                         }
3880                         sglq_entry->buff_type = NVMET_BUFF_TYPE;
3881                         sglq_entry->virt = lpfc_nvmet_buf_alloc(phba, 0,
3882                                                            &sglq_entry->phys);
3883                         if (sglq_entry->virt == NULL) {
3884                                 kfree(sglq_entry);
3885                                 lpfc_printf_log(phba, KERN_ERR,
3886                                                 LOG_TRACE_EVENT,
3887                                                 "6304 Failure to allocate an "
3888                                                 "NVMET buf:%d\n", i);
3889                                 rc = -ENOMEM;
3890                                 goto out_free_mem;
3891                         }
3892                         sglq_entry->sgl = sglq_entry->virt;
3893                         memset(sglq_entry->sgl, 0,
3894                                phba->cfg_sg_dma_buf_size);
3895                         sglq_entry->state = SGL_FREED;
3896                         list_add_tail(&sglq_entry->list, &nvmet_sgl_list);
3897                 }
3898                 spin_lock_irq(&phba->hbalock);
3899                 spin_lock(&phba->sli4_hba.sgl_list_lock);
3900                 list_splice_init(&nvmet_sgl_list,
3901                                  &phba->sli4_hba.lpfc_nvmet_sgl_list);
3902                 spin_unlock(&phba->sli4_hba.sgl_list_lock);
3903                 spin_unlock_irq(&phba->hbalock);
3904         } else if (nvmet_xri_cnt < phba->sli4_hba.nvmet_xri_cnt) {
3905                 /* nvmet xri-sgl shrunk */
3906                 xri_cnt = phba->sli4_hba.nvmet_xri_cnt - nvmet_xri_cnt;
3907                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3908                                 "6305 NVMET xri-sgl count decreased from "
3909                                 "%d to %d\n", phba->sli4_hba.nvmet_xri_cnt,
3910                                 nvmet_xri_cnt);
3911                 spin_lock_irq(&phba->hbalock);
3912                 spin_lock(&phba->sli4_hba.sgl_list_lock);
3913                 list_splice_init(&phba->sli4_hba.lpfc_nvmet_sgl_list,
3914                                  &nvmet_sgl_list);
3915                 /* release extra nvmet sgls from list */
3916                 for (i = 0; i < xri_cnt; i++) {
3917                         list_remove_head(&nvmet_sgl_list,
3918                                          sglq_entry, struct lpfc_sglq, list);
3919                         if (sglq_entry) {
3920                                 lpfc_nvmet_buf_free(phba, sglq_entry->virt,
3921                                                     sglq_entry->phys);
3922                                 kfree(sglq_entry);
3923                         }
3924                 }
3925                 list_splice_init(&nvmet_sgl_list,
3926                                  &phba->sli4_hba.lpfc_nvmet_sgl_list);
3927                 spin_unlock(&phba->sli4_hba.sgl_list_lock);
3928                 spin_unlock_irq(&phba->hbalock);
3929         } else
3930                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3931                                 "6306 NVMET xri-sgl count unchanged: %d\n",
3932                                 nvmet_xri_cnt);
3933         phba->sli4_hba.nvmet_xri_cnt = nvmet_xri_cnt;
3934
3935         /* update xris to nvmet sgls on the list */
3936         sglq_entry = NULL;
3937         sglq_entry_next = NULL;
3938         list_for_each_entry_safe(sglq_entry, sglq_entry_next,
3939                                  &phba->sli4_hba.lpfc_nvmet_sgl_list, list) {
3940                 lxri = lpfc_sli4_next_xritag(phba);
3941                 if (lxri == NO_XRI) {
3942                         lpfc_printf_log(phba, KERN_ERR,
3943                                         LOG_TRACE_EVENT,
3944                                         "6307 Failed to allocate xri for "
3945                                         "NVMET sgl\n");
3946                         rc = -ENOMEM;
3947                         goto out_free_mem;
3948                 }
3949                 sglq_entry->sli4_lxritag = lxri;
3950                 sglq_entry->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
3951         }
3952         return 0;
3953
3954 out_free_mem:
3955         lpfc_free_nvmet_sgl_list(phba);
3956         return rc;
3957 }
3958
3959 int
3960 lpfc_io_buf_flush(struct lpfc_hba *phba, struct list_head *cbuf)
3961 {
3962         LIST_HEAD(blist);
3963         struct lpfc_sli4_hdw_queue *qp;
3964         struct lpfc_io_buf *lpfc_cmd;
3965         struct lpfc_io_buf *iobufp, *prev_iobufp;
3966         int idx, cnt, xri, inserted;
3967
3968         cnt = 0;
3969         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
3970                 qp = &phba->sli4_hba.hdwq[idx];
3971                 spin_lock_irq(&qp->io_buf_list_get_lock);
3972                 spin_lock(&qp->io_buf_list_put_lock);
3973
3974                 /* Take everything off the get and put lists */
3975                 list_splice_init(&qp->lpfc_io_buf_list_get, &blist);
3976                 list_splice(&qp->lpfc_io_buf_list_put, &blist);
3977                 INIT_LIST_HEAD(&qp->lpfc_io_buf_list_get);
3978                 INIT_LIST_HEAD(&qp->lpfc_io_buf_list_put);
3979                 cnt += qp->get_io_bufs + qp->put_io_bufs;
3980                 qp->get_io_bufs = 0;
3981                 qp->put_io_bufs = 0;
3982                 qp->total_io_bufs = 0;
3983                 spin_unlock(&qp->io_buf_list_put_lock);
3984                 spin_unlock_irq(&qp->io_buf_list_get_lock);
3985         }
3986
3987         /*
3988          * Take IO buffers off blist and put on cbuf sorted by XRI.
3989          * This is because POST_SGL takes a sequential range of XRIs
3990          * to post to the firmware.
3991          */
3992         for (idx = 0; idx < cnt; idx++) {
3993                 list_remove_head(&blist, lpfc_cmd, struct lpfc_io_buf, list);
3994                 if (!lpfc_cmd)
3995                         return cnt;
3996                 if (idx == 0) {
3997                         list_add_tail(&lpfc_cmd->list, cbuf);
3998                         continue;
3999                 }
4000                 xri = lpfc_cmd->cur_iocbq.sli4_xritag;
4001                 inserted = 0;
4002                 prev_iobufp = NULL;
4003                 list_for_each_entry(iobufp, cbuf, list) {
4004                         if (xri < iobufp->cur_iocbq.sli4_xritag) {
4005                                 if (prev_iobufp)
4006                                         list_add(&lpfc_cmd->list,
4007                                                  &prev_iobufp->list);
4008                                 else
4009                                         list_add(&lpfc_cmd->list, cbuf);
4010                                 inserted = 1;
4011                                 break;
4012                         }
4013                         prev_iobufp = iobufp;
4014                 }
4015                 if (!inserted)
4016                         list_add_tail(&lpfc_cmd->list, cbuf);
4017         }
4018         return cnt;
4019 }
4020
4021 int
4022 lpfc_io_buf_replenish(struct lpfc_hba *phba, struct list_head *cbuf)
4023 {
4024         struct lpfc_sli4_hdw_queue *qp;
4025         struct lpfc_io_buf *lpfc_cmd;
4026         int idx, cnt;
4027
4028         qp = phba->sli4_hba.hdwq;
4029         cnt = 0;
4030         while (!list_empty(cbuf)) {
4031                 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
4032                         list_remove_head(cbuf, lpfc_cmd,
4033                                          struct lpfc_io_buf, list);
4034                         if (!lpfc_cmd)
4035                                 return cnt;
4036                         cnt++;
4037                         qp = &phba->sli4_hba.hdwq[idx];
4038                         lpfc_cmd->hdwq_no = idx;
4039                         lpfc_cmd->hdwq = qp;
4040                         lpfc_cmd->cur_iocbq.wqe_cmpl = NULL;
4041                         lpfc_cmd->cur_iocbq.iocb_cmpl = NULL;
4042                         spin_lock(&qp->io_buf_list_put_lock);
4043                         list_add_tail(&lpfc_cmd->list,
4044                                       &qp->lpfc_io_buf_list_put);
4045                         qp->put_io_bufs++;
4046                         qp->total_io_bufs++;
4047                         spin_unlock(&qp->io_buf_list_put_lock);
4048                 }
4049         }
4050         return cnt;
4051 }
4052
4053 /**
4054  * lpfc_sli4_io_sgl_update - update xri-sgl sizing and mapping
4055  * @phba: pointer to lpfc hba data structure.
4056  *
4057  * This routine first calculates the sizes of the current els and allocated
4058  * scsi sgl lists, and then goes through all sgls to updates the physical
4059  * XRIs assigned due to port function reset. During port initialization, the
4060  * current els and allocated scsi sgl lists are 0s.
4061  *
4062  * Return codes
4063  *   0 - successful (for now, it always returns 0)
4064  **/
4065 int
4066 lpfc_sli4_io_sgl_update(struct lpfc_hba *phba)
4067 {
4068         struct lpfc_io_buf *lpfc_ncmd = NULL, *lpfc_ncmd_next = NULL;
4069         uint16_t i, lxri, els_xri_cnt;
4070         uint16_t io_xri_cnt, io_xri_max;
4071         LIST_HEAD(io_sgl_list);
4072         int rc, cnt;
4073
4074         /*
4075          * update on pci function's allocated nvme xri-sgl list
4076          */
4077
4078         /* maximum number of xris available for nvme buffers */
4079         els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
4080         io_xri_max = phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt;
4081         phba->sli4_hba.io_xri_max = io_xri_max;
4082
4083         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4084                         "6074 Current allocated XRI sgl count:%d, "
4085                         "maximum XRI count:%d\n",
4086                         phba->sli4_hba.io_xri_cnt,
4087                         phba->sli4_hba.io_xri_max);
4088
4089         cnt = lpfc_io_buf_flush(phba, &io_sgl_list);
4090
4091         if (phba->sli4_hba.io_xri_cnt > phba->sli4_hba.io_xri_max) {
4092                 /* max nvme xri shrunk below the allocated nvme buffers */
4093                 io_xri_cnt = phba->sli4_hba.io_xri_cnt -
4094                                         phba->sli4_hba.io_xri_max;
4095                 /* release the extra allocated nvme buffers */
4096                 for (i = 0; i < io_xri_cnt; i++) {
4097                         list_remove_head(&io_sgl_list, lpfc_ncmd,
4098                                          struct lpfc_io_buf, list);
4099                         if (lpfc_ncmd) {
4100                                 dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4101                                               lpfc_ncmd->data,
4102                                               lpfc_ncmd->dma_handle);
4103                                 kfree(lpfc_ncmd);
4104                         }
4105                 }
4106                 phba->sli4_hba.io_xri_cnt -= io_xri_cnt;
4107         }
4108
4109         /* update xris associated to remaining allocated nvme buffers */
4110         lpfc_ncmd = NULL;
4111         lpfc_ncmd_next = NULL;
4112         phba->sli4_hba.io_xri_cnt = cnt;
4113         list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
4114                                  &io_sgl_list, list) {
4115                 lxri = lpfc_sli4_next_xritag(phba);
4116                 if (lxri == NO_XRI) {
4117                         lpfc_printf_log(phba, KERN_ERR,
4118                                         LOG_TRACE_EVENT,
4119                                         "6075 Failed to allocate xri for "
4120                                         "nvme buffer\n");
4121                         rc = -ENOMEM;
4122                         goto out_free_mem;
4123                 }
4124                 lpfc_ncmd->cur_iocbq.sli4_lxritag = lxri;
4125                 lpfc_ncmd->cur_iocbq.sli4_xritag = phba->sli4_hba.xri_ids[lxri];
4126         }
4127         cnt = lpfc_io_buf_replenish(phba, &io_sgl_list);
4128         return 0;
4129
4130 out_free_mem:
4131         lpfc_io_free(phba);
4132         return rc;
4133 }
4134
4135 /**
4136  * lpfc_new_io_buf - IO buffer allocator for HBA with SLI4 IF spec
4137  * @phba: Pointer to lpfc hba data structure.
4138  * @num_to_alloc: The requested number of buffers to allocate.
4139  *
4140  * This routine allocates nvme buffers for device with SLI-4 interface spec,
4141  * the nvme buffer contains all the necessary information needed to initiate
4142  * an I/O. After allocating up to @num_to_allocate IO buffers and put
4143  * them on a list, it post them to the port by using SGL block post.
4144  *
4145  * Return codes:
4146  *   int - number of IO buffers that were allocated and posted.
4147  *   0 = failure, less than num_to_alloc is a partial failure.
4148  **/
4149 int
4150 lpfc_new_io_buf(struct lpfc_hba *phba, int num_to_alloc)
4151 {
4152         struct lpfc_io_buf *lpfc_ncmd;
4153         struct lpfc_iocbq *pwqeq;
4154         uint16_t iotag, lxri = 0;
4155         int bcnt, num_posted;
4156         LIST_HEAD(prep_nblist);
4157         LIST_HEAD(post_nblist);
4158         LIST_HEAD(nvme_nblist);
4159
4160         phba->sli4_hba.io_xri_cnt = 0;
4161         for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {
4162                 lpfc_ncmd = kzalloc(sizeof(*lpfc_ncmd), GFP_KERNEL);
4163                 if (!lpfc_ncmd)
4164                         break;
4165                 /*
4166                  * Get memory from the pci pool to map the virt space to
4167                  * pci bus space for an I/O. The DMA buffer includes the
4168                  * number of SGE's necessary to support the sg_tablesize.
4169                  */
4170                 lpfc_ncmd->data = dma_pool_zalloc(phba->lpfc_sg_dma_buf_pool,
4171                                                   GFP_KERNEL,
4172                                                   &lpfc_ncmd->dma_handle);
4173                 if (!lpfc_ncmd->data) {
4174                         kfree(lpfc_ncmd);
4175                         break;
4176                 }
4177
4178                 if (phba->cfg_xpsgl && !phba->nvmet_support) {
4179                         INIT_LIST_HEAD(&lpfc_ncmd->dma_sgl_xtra_list);
4180                 } else {
4181                         /*
4182                          * 4K Page alignment is CRITICAL to BlockGuard, double
4183                          * check to be sure.
4184                          */
4185                         if ((phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
4186                             (((unsigned long)(lpfc_ncmd->data) &
4187                             (unsigned long)(SLI4_PAGE_SIZE - 1)) != 0)) {
4188                                 lpfc_printf_log(phba, KERN_ERR,
4189                                                 LOG_TRACE_EVENT,
4190                                                 "3369 Memory alignment err: "
4191                                                 "addr=%lx\n",
4192                                                 (unsigned long)lpfc_ncmd->data);
4193                                 dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4194                                               lpfc_ncmd->data,
4195                                               lpfc_ncmd->dma_handle);
4196                                 kfree(lpfc_ncmd);
4197                                 break;
4198                         }
4199                 }
4200
4201                 INIT_LIST_HEAD(&lpfc_ncmd->dma_cmd_rsp_list);
4202
4203                 lxri = lpfc_sli4_next_xritag(phba);
4204                 if (lxri == NO_XRI) {
4205                         dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4206                                       lpfc_ncmd->data, lpfc_ncmd->dma_handle);
4207                         kfree(lpfc_ncmd);
4208                         break;
4209                 }
4210                 pwqeq = &lpfc_ncmd->cur_iocbq;
4211
4212                 /* Allocate iotag for lpfc_ncmd->cur_iocbq. */
4213                 iotag = lpfc_sli_next_iotag(phba, pwqeq);
4214                 if (iotag == 0) {
4215                         dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4216                                       lpfc_ncmd->data, lpfc_ncmd->dma_handle);
4217                         kfree(lpfc_ncmd);
4218                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4219                                         "6121 Failed to allocate IOTAG for"
4220                                         " XRI:0x%x\n", lxri);
4221                         lpfc_sli4_free_xri(phba, lxri);
4222                         break;
4223                 }
4224                 pwqeq->sli4_lxritag = lxri;
4225                 pwqeq->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
4226                 pwqeq->context1 = lpfc_ncmd;
4227
4228                 /* Initialize local short-hand pointers. */
4229                 lpfc_ncmd->dma_sgl = lpfc_ncmd->data;
4230                 lpfc_ncmd->dma_phys_sgl = lpfc_ncmd->dma_handle;
4231                 lpfc_ncmd->cur_iocbq.context1 = lpfc_ncmd;
4232                 spin_lock_init(&lpfc_ncmd->buf_lock);
4233
4234                 /* add the nvme buffer to a post list */
4235                 list_add_tail(&lpfc_ncmd->list, &post_nblist);
4236                 phba->sli4_hba.io_xri_cnt++;
4237         }
4238         lpfc_printf_log(phba, KERN_INFO, LOG_NVME,
4239                         "6114 Allocate %d out of %d requested new NVME "
4240                         "buffers\n", bcnt, num_to_alloc);
4241
4242         /* post the list of nvme buffer sgls to port if available */
4243         if (!list_empty(&post_nblist))
4244                 num_posted = lpfc_sli4_post_io_sgl_list(
4245                                 phba, &post_nblist, bcnt);
4246         else
4247                 num_posted = 0;
4248
4249         return num_posted;
4250 }
4251
4252 static uint64_t
4253 lpfc_get_wwpn(struct lpfc_hba *phba)
4254 {
4255         uint64_t wwn;
4256         int rc;
4257         LPFC_MBOXQ_t *mboxq;
4258         MAILBOX_t *mb;
4259
4260         mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
4261                                                 GFP_KERNEL);
4262         if (!mboxq)
4263                 return (uint64_t)-1;
4264
4265         /* First get WWN of HBA instance */
4266         lpfc_read_nv(phba, mboxq);
4267         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
4268         if (rc != MBX_SUCCESS) {
4269                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4270                                 "6019 Mailbox failed , mbxCmd x%x "
4271                                 "READ_NV, mbxStatus x%x\n",
4272                                 bf_get(lpfc_mqe_command, &mboxq->u.mqe),
4273                                 bf_get(lpfc_mqe_status, &mboxq->u.mqe));
4274                 mempool_free(mboxq, phba->mbox_mem_pool);
4275                 return (uint64_t) -1;
4276         }
4277         mb = &mboxq->u.mb;
4278         memcpy(&wwn, (char *)mb->un.varRDnvp.portname, sizeof(uint64_t));
4279         /* wwn is WWPN of HBA instance */
4280         mempool_free(mboxq, phba->mbox_mem_pool);
4281         if (phba->sli_rev == LPFC_SLI_REV4)
4282                 return be64_to_cpu(wwn);
4283         else
4284                 return rol64(wwn, 32);
4285 }
4286
4287 /**
4288  * lpfc_create_port - Create an FC port
4289  * @phba: pointer to lpfc hba data structure.
4290  * @instance: a unique integer ID to this FC port.
4291  * @dev: pointer to the device data structure.
4292  *
4293  * This routine creates a FC port for the upper layer protocol. The FC port
4294  * can be created on top of either a physical port or a virtual port provided
4295  * by the HBA. This routine also allocates a SCSI host data structure (shost)
4296  * and associates the FC port created before adding the shost into the SCSI
4297  * layer.
4298  *
4299  * Return codes
4300  *   @vport - pointer to the virtual N_Port data structure.
4301  *   NULL - port create failed.
4302  **/
4303 struct lpfc_vport *
4304 lpfc_create_port(struct lpfc_hba *phba, int instance, struct device *dev)
4305 {
4306         struct lpfc_vport *vport;
4307         struct Scsi_Host  *shost = NULL;
4308         struct scsi_host_template *template;
4309         int error = 0;
4310         int i;
4311         uint64_t wwn;
4312         bool use_no_reset_hba = false;
4313         int rc;
4314
4315         if (lpfc_no_hba_reset_cnt) {
4316                 if (phba->sli_rev < LPFC_SLI_REV4 &&
4317                     dev == &phba->pcidev->dev) {
4318                         /* Reset the port first */
4319                         lpfc_sli_brdrestart(phba);
4320                         rc = lpfc_sli_chipset_init(phba);
4321                         if (rc)
4322                                 return NULL;
4323                 }
4324                 wwn = lpfc_get_wwpn(phba);
4325         }
4326
4327         for (i = 0; i < lpfc_no_hba_reset_cnt; i++) {
4328                 if (wwn == lpfc_no_hba_reset[i]) {
4329                         lpfc_printf_log(phba, KERN_ERR,
4330                                         LOG_TRACE_EVENT,
4331                                         "6020 Setting use_no_reset port=%llx\n",
4332                                         wwn);
4333                         use_no_reset_hba = true;
4334                         break;
4335                 }
4336         }
4337
4338         /* Seed template for SCSI host registration */
4339         if (dev == &phba->pcidev->dev) {
4340                 template = &phba->port_template;
4341
4342                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) {
4343                         /* Seed physical port template */
4344                         memcpy(template, &lpfc_template, sizeof(*template));
4345
4346                         if (use_no_reset_hba) {
4347                                 /* template is for a no reset SCSI Host */
4348                                 template->max_sectors = 0xffff;
4349                                 template->eh_host_reset_handler = NULL;
4350                         }
4351
4352                         /* Template for all vports this physical port creates */
4353                         memcpy(&phba->vport_template, &lpfc_template,
4354                                sizeof(*template));
4355                         phba->vport_template.max_sectors = 0xffff;
4356                         phba->vport_template.shost_attrs = lpfc_vport_attrs;
4357                         phba->vport_template.eh_bus_reset_handler = NULL;
4358                         phba->vport_template.eh_host_reset_handler = NULL;
4359                         phba->vport_template.vendor_id = 0;
4360
4361                         /* Initialize the host templates with updated value */
4362                         if (phba->sli_rev == LPFC_SLI_REV4) {
4363                                 template->sg_tablesize = phba->cfg_scsi_seg_cnt;
4364                                 phba->vport_template.sg_tablesize =
4365                                         phba->cfg_scsi_seg_cnt;
4366                         } else {
4367                                 template->sg_tablesize = phba->cfg_sg_seg_cnt;
4368                                 phba->vport_template.sg_tablesize =
4369                                         phba->cfg_sg_seg_cnt;
4370                         }
4371
4372                 } else {
4373                         /* NVMET is for physical port only */
4374                         memcpy(template, &lpfc_template_nvme,
4375                                sizeof(*template));
4376                 }
4377         } else {
4378                 template = &phba->vport_template;
4379         }
4380
4381         shost = scsi_host_alloc(template, sizeof(struct lpfc_vport));
4382         if (!shost)
4383                 goto out;
4384
4385         vport = (struct lpfc_vport *) shost->hostdata;
4386         vport->phba = phba;
4387         vport->load_flag |= FC_LOADING;
4388         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
4389         vport->fc_rscn_flush = 0;
4390         lpfc_get_vport_cfgparam(vport);
4391
4392         /* Adjust value in vport */
4393         vport->cfg_enable_fc4_type = phba->cfg_enable_fc4_type;
4394
4395         shost->unique_id = instance;
4396         shost->max_id = LPFC_MAX_TARGET;
4397         shost->max_lun = vport->cfg_max_luns;
4398         shost->this_id = -1;
4399         shost->max_cmd_len = 16;
4400
4401         if (phba->sli_rev == LPFC_SLI_REV4) {
4402                 if (!phba->cfg_fcp_mq_threshold ||
4403                     phba->cfg_fcp_mq_threshold > phba->cfg_hdw_queue)
4404                         phba->cfg_fcp_mq_threshold = phba->cfg_hdw_queue;
4405
4406                 shost->nr_hw_queues = min_t(int, 2 * num_possible_nodes(),
4407                                             phba->cfg_fcp_mq_threshold);
4408
4409                 shost->dma_boundary =
4410                         phba->sli4_hba.pc_sli4_params.sge_supp_len-1;
4411
4412                 if (phba->cfg_xpsgl && !phba->nvmet_support)
4413                         shost->sg_tablesize = LPFC_MAX_SG_TABLESIZE;
4414                 else
4415                         shost->sg_tablesize = phba->cfg_scsi_seg_cnt;
4416         } else
4417                 /* SLI-3 has a limited number of hardware queues (3),
4418                  * thus there is only one for FCP processing.
4419                  */
4420                 shost->nr_hw_queues = 1;
4421
4422         /*
4423          * Set initial can_queue value since 0 is no longer supported and
4424          * scsi_add_host will fail. This will be adjusted later based on the
4425          * max xri value determined in hba setup.
4426          */
4427         shost->can_queue = phba->cfg_hba_queue_depth - 10;
4428         if (dev != &phba->pcidev->dev) {
4429                 shost->transportt = lpfc_vport_transport_template;
4430                 vport->port_type = LPFC_NPIV_PORT;
4431         } else {
4432                 shost->transportt = lpfc_transport_template;
4433                 vport->port_type = LPFC_PHYSICAL_PORT;
4434         }
4435
4436         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,
4437                         "9081 CreatePort TMPLATE type %x TBLsize %d "
4438                         "SEGcnt %d/%d\n",
4439                         vport->port_type, shost->sg_tablesize,
4440                         phba->cfg_scsi_seg_cnt, phba->cfg_sg_seg_cnt);
4441
4442         /* Initialize all internally managed lists. */
4443         INIT_LIST_HEAD(&vport->fc_nodes);
4444         INIT_LIST_HEAD(&vport->rcv_buffer_list);
4445         spin_lock_init(&vport->work_port_lock);
4446
4447         timer_setup(&vport->fc_disctmo, lpfc_disc_timeout, 0);
4448
4449         timer_setup(&vport->els_tmofunc, lpfc_els_timeout, 0);
4450
4451         timer_setup(&vport->delayed_disc_tmo, lpfc_delayed_disc_tmo, 0);
4452
4453         if (phba->sli3_options & LPFC_SLI3_BG_ENABLED)
4454                 lpfc_setup_bg(phba, shost);
4455
4456         error = scsi_add_host_with_dma(shost, dev, &phba->pcidev->dev);
4457         if (error)
4458                 goto out_put_shost;
4459
4460         spin_lock_irq(&phba->port_list_lock);
4461         list_add_tail(&vport->listentry, &phba->port_list);
4462         spin_unlock_irq(&phba->port_list_lock);
4463         return vport;
4464
4465 out_put_shost:
4466         scsi_host_put(shost);
4467 out:
4468         return NULL;
4469 }
4470
4471 /**
4472  * destroy_port -  destroy an FC port
4473  * @vport: pointer to an lpfc virtual N_Port data structure.
4474  *
4475  * This routine destroys a FC port from the upper layer protocol. All the
4476  * resources associated with the port are released.
4477  **/
4478 void
4479 destroy_port(struct lpfc_vport *vport)
4480 {
4481         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4482         struct lpfc_hba  *phba = vport->phba;
4483
4484         lpfc_debugfs_terminate(vport);
4485         fc_remove_host(shost);
4486         scsi_remove_host(shost);
4487
4488         spin_lock_irq(&phba->port_list_lock);
4489         list_del_init(&vport->listentry);
4490         spin_unlock_irq(&phba->port_list_lock);
4491
4492         lpfc_cleanup(vport);
4493         return;
4494 }
4495
4496 /**
4497  * lpfc_get_instance - Get a unique integer ID
4498  *
4499  * This routine allocates a unique integer ID from lpfc_hba_index pool. It
4500  * uses the kernel idr facility to perform the task.
4501  *
4502  * Return codes:
4503  *   instance - a unique integer ID allocated as the new instance.
4504  *   -1 - lpfc get instance failed.
4505  **/
4506 int
4507 lpfc_get_instance(void)
4508 {
4509         int ret;
4510
4511         ret = idr_alloc(&lpfc_hba_index, NULL, 0, 0, GFP_KERNEL);
4512         return ret < 0 ? -1 : ret;
4513 }
4514
4515 /**
4516  * lpfc_scan_finished - method for SCSI layer to detect whether scan is done
4517  * @shost: pointer to SCSI host data structure.
4518  * @time: elapsed time of the scan in jiffies.
4519  *
4520  * This routine is called by the SCSI layer with a SCSI host to determine
4521  * whether the scan host is finished.
4522  *
4523  * Note: there is no scan_start function as adapter initialization will have
4524  * asynchronously kicked off the link initialization.
4525  *
4526  * Return codes
4527  *   0 - SCSI host scan is not over yet.
4528  *   1 - SCSI host scan is over.
4529  **/
4530 int lpfc_scan_finished(struct Scsi_Host *shost, unsigned long time)
4531 {
4532         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4533         struct lpfc_hba   *phba = vport->phba;
4534         int stat = 0;
4535
4536         spin_lock_irq(shost->host_lock);
4537
4538         if (vport->load_flag & FC_UNLOADING) {
4539                 stat = 1;
4540                 goto finished;
4541         }
4542         if (time >= msecs_to_jiffies(30 * 1000)) {
4543                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4544                                 "0461 Scanning longer than 30 "
4545                                 "seconds.  Continuing initialization\n");
4546                 stat = 1;
4547                 goto finished;
4548         }
4549         if (time >= msecs_to_jiffies(15 * 1000) &&
4550             phba->link_state <= LPFC_LINK_DOWN) {
4551                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4552                                 "0465 Link down longer than 15 "
4553                                 "seconds.  Continuing initialization\n");
4554                 stat = 1;
4555                 goto finished;
4556         }
4557
4558         if (vport->port_state != LPFC_VPORT_READY)
4559                 goto finished;
4560         if (vport->num_disc_nodes || vport->fc_prli_sent)
4561                 goto finished;
4562         if (vport->fc_map_cnt == 0 && time < msecs_to_jiffies(2 * 1000))
4563                 goto finished;
4564         if ((phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) != 0)
4565                 goto finished;
4566
4567         stat = 1;
4568
4569 finished:
4570         spin_unlock_irq(shost->host_lock);
4571         return stat;
4572 }
4573
4574 static void lpfc_host_supported_speeds_set(struct Scsi_Host *shost)
4575 {
4576         struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
4577         struct lpfc_hba   *phba = vport->phba;
4578
4579         fc_host_supported_speeds(shost) = 0;
4580         /*
4581          * Avoid reporting supported link speed for FCoE as it can't be
4582          * controlled via FCoE.
4583          */
4584         if (phba->hba_flag & HBA_FCOE_MODE)
4585                 return;
4586
4587         if (phba->lmt & LMT_128Gb)
4588                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_128GBIT;
4589         if (phba->lmt & LMT_64Gb)
4590                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_64GBIT;
4591         if (phba->lmt & LMT_32Gb)
4592                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_32GBIT;
4593         if (phba->lmt & LMT_16Gb)
4594                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_16GBIT;
4595         if (phba->lmt & LMT_10Gb)
4596                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_10GBIT;
4597         if (phba->lmt & LMT_8Gb)
4598                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_8GBIT;
4599         if (phba->lmt & LMT_4Gb)
4600                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_4GBIT;
4601         if (phba->lmt & LMT_2Gb)
4602                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_2GBIT;
4603         if (phba->lmt & LMT_1Gb)
4604                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_1GBIT;
4605 }
4606
4607 /**
4608  * lpfc_host_attrib_init - Initialize SCSI host attributes on a FC port
4609  * @shost: pointer to SCSI host data structure.
4610  *
4611  * This routine initializes a given SCSI host attributes on a FC port. The
4612  * SCSI host can be either on top of a physical port or a virtual port.
4613  **/
4614 void lpfc_host_attrib_init(struct Scsi_Host *shost)
4615 {
4616         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4617         struct lpfc_hba   *phba = vport->phba;
4618         /*
4619          * Set fixed host attributes.  Must done after lpfc_sli_hba_setup().
4620          */
4621
4622         fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
4623         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
4624         fc_host_supported_classes(shost) = FC_COS_CLASS3;
4625
4626         memset(fc_host_supported_fc4s(shost), 0,
4627                sizeof(fc_host_supported_fc4s(shost)));
4628         fc_host_supported_fc4s(shost)[2] = 1;
4629         fc_host_supported_fc4s(shost)[7] = 1;
4630
4631         lpfc_vport_symbolic_node_name(vport, fc_host_symbolic_name(shost),
4632                                  sizeof fc_host_symbolic_name(shost));
4633
4634         lpfc_host_supported_speeds_set(shost);
4635
4636         fc_host_maxframe_size(shost) =
4637                 (((uint32_t) vport->fc_sparam.cmn.bbRcvSizeMsb & 0x0F) << 8) |
4638                 (uint32_t) vport->fc_sparam.cmn.bbRcvSizeLsb;
4639
4640         fc_host_dev_loss_tmo(shost) = vport->cfg_devloss_tmo;
4641
4642         /* This value is also unchanging */
4643         memset(fc_host_active_fc4s(shost), 0,
4644                sizeof(fc_host_active_fc4s(shost)));
4645         fc_host_active_fc4s(shost)[2] = 1;
4646         fc_host_active_fc4s(shost)[7] = 1;
4647
4648         fc_host_max_npiv_vports(shost) = phba->max_vpi;
4649         spin_lock_irq(shost->host_lock);
4650         vport->load_flag &= ~FC_LOADING;
4651         spin_unlock_irq(shost->host_lock);
4652 }
4653
4654 /**
4655  * lpfc_stop_port_s3 - Stop SLI3 device port
4656  * @phba: pointer to lpfc hba data structure.
4657  *
4658  * This routine is invoked to stop an SLI3 device port, it stops the device
4659  * from generating interrupts and stops the device driver's timers for the
4660  * device.
4661  **/
4662 static void
4663 lpfc_stop_port_s3(struct lpfc_hba *phba)
4664 {
4665         /* Clear all interrupt enable conditions */
4666         writel(0, phba->HCregaddr);
4667         readl(phba->HCregaddr); /* flush */
4668         /* Clear all pending interrupts */
4669         writel(0xffffffff, phba->HAregaddr);
4670         readl(phba->HAregaddr); /* flush */
4671
4672         /* Reset some HBA SLI setup states */
4673         lpfc_stop_hba_timers(phba);
4674         phba->pport->work_port_events = 0;
4675 }
4676
4677 /**
4678  * lpfc_stop_port_s4 - Stop SLI4 device port
4679  * @phba: pointer to lpfc hba data structure.
4680  *
4681  * This routine is invoked to stop an SLI4 device port, it stops the device
4682  * from generating interrupts and stops the device driver's timers for the
4683  * device.
4684  **/
4685 static void
4686 lpfc_stop_port_s4(struct lpfc_hba *phba)
4687 {
4688         /* Reset some HBA SLI4 setup states */
4689         lpfc_stop_hba_timers(phba);
4690         if (phba->pport)
4691                 phba->pport->work_port_events = 0;
4692         phba->sli4_hba.intr_enable = 0;
4693 }
4694
4695 /**
4696  * lpfc_stop_port - Wrapper function for stopping hba port
4697  * @phba: Pointer to HBA context object.
4698  *
4699  * This routine wraps the actual SLI3 or SLI4 hba stop port routine from
4700  * the API jump table function pointer from the lpfc_hba struct.
4701  **/
4702 void
4703 lpfc_stop_port(struct lpfc_hba *phba)
4704 {
4705         phba->lpfc_stop_port(phba);
4706
4707         if (phba->wq)
4708                 flush_workqueue(phba->wq);
4709 }
4710
4711 /**
4712  * lpfc_fcf_redisc_wait_start_timer - Start fcf rediscover wait timer
4713  * @phba: Pointer to hba for which this call is being executed.
4714  *
4715  * This routine starts the timer waiting for the FCF rediscovery to complete.
4716  **/
4717 void
4718 lpfc_fcf_redisc_wait_start_timer(struct lpfc_hba *phba)
4719 {
4720         unsigned long fcf_redisc_wait_tmo =
4721                 (jiffies + msecs_to_jiffies(LPFC_FCF_REDISCOVER_WAIT_TMO));
4722         /* Start fcf rediscovery wait period timer */
4723         mod_timer(&phba->fcf.redisc_wait, fcf_redisc_wait_tmo);
4724         spin_lock_irq(&phba->hbalock);
4725         /* Allow action to new fcf asynchronous event */
4726         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
4727         /* Mark the FCF rediscovery pending state */
4728         phba->fcf.fcf_flag |= FCF_REDISC_PEND;
4729         spin_unlock_irq(&phba->hbalock);
4730 }
4731
4732 /**
4733  * lpfc_sli4_fcf_redisc_wait_tmo - FCF table rediscover wait timeout
4734  * @t: Timer context used to obtain the pointer to lpfc hba data structure.
4735  *
4736  * This routine is invoked when waiting for FCF table rediscover has been
4737  * timed out. If new FCF record(s) has (have) been discovered during the
4738  * wait period, a new FCF event shall be added to the FCOE async event
4739  * list, and then worker thread shall be waked up for processing from the
4740  * worker thread context.
4741  **/
4742 static void
4743 lpfc_sli4_fcf_redisc_wait_tmo(struct timer_list *t)
4744 {
4745         struct lpfc_hba *phba = from_timer(phba, t, fcf.redisc_wait);
4746
4747         /* Don't send FCF rediscovery event if timer cancelled */
4748         spin_lock_irq(&phba->hbalock);
4749         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
4750                 spin_unlock_irq(&phba->hbalock);
4751                 return;
4752         }
4753         /* Clear FCF rediscovery timer pending flag */
4754         phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
4755         /* FCF rediscovery event to worker thread */
4756         phba->fcf.fcf_flag |= FCF_REDISC_EVT;
4757         spin_unlock_irq(&phba->hbalock);
4758         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
4759                         "2776 FCF rediscover quiescent timer expired\n");
4760         /* wake up worker thread */
4761         lpfc_worker_wake_up(phba);
4762 }
4763
4764 /**
4765  * lpfc_sli4_parse_latt_fault - Parse sli4 link-attention link fault code
4766  * @phba: pointer to lpfc hba data structure.
4767  * @acqe_link: pointer to the async link completion queue entry.
4768  *
4769  * This routine is to parse the SLI4 link-attention link fault code.
4770  **/
4771 static void
4772 lpfc_sli4_parse_latt_fault(struct lpfc_hba *phba,
4773                            struct lpfc_acqe_link *acqe_link)
4774 {
4775         switch (bf_get(lpfc_acqe_link_fault, acqe_link)) {
4776         case LPFC_ASYNC_LINK_FAULT_NONE:
4777         case LPFC_ASYNC_LINK_FAULT_LOCAL:
4778         case LPFC_ASYNC_LINK_FAULT_REMOTE:
4779         case LPFC_ASYNC_LINK_FAULT_LR_LRR:
4780                 break;
4781         default:
4782                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4783                                 "0398 Unknown link fault code: x%x\n",
4784                                 bf_get(lpfc_acqe_link_fault, acqe_link));
4785                 break;
4786         }
4787 }
4788
4789 /**
4790  * lpfc_sli4_parse_latt_type - Parse sli4 link attention type
4791  * @phba: pointer to lpfc hba data structure.
4792  * @acqe_link: pointer to the async link completion queue entry.
4793  *
4794  * This routine is to parse the SLI4 link attention type and translate it
4795  * into the base driver's link attention type coding.
4796  *
4797  * Return: Link attention type in terms of base driver's coding.
4798  **/
4799 static uint8_t
4800 lpfc_sli4_parse_latt_type(struct lpfc_hba *phba,
4801                           struct lpfc_acqe_link *acqe_link)
4802 {
4803         uint8_t att_type;
4804
4805         switch (bf_get(lpfc_acqe_link_status, acqe_link)) {
4806         case LPFC_ASYNC_LINK_STATUS_DOWN:
4807         case LPFC_ASYNC_LINK_STATUS_LOGICAL_DOWN:
4808                 att_type = LPFC_ATT_LINK_DOWN;
4809                 break;
4810         case LPFC_ASYNC_LINK_STATUS_UP:
4811                 /* Ignore physical link up events - wait for logical link up */
4812                 att_type = LPFC_ATT_RESERVED;
4813                 break;
4814         case LPFC_ASYNC_LINK_STATUS_LOGICAL_UP:
4815                 att_type = LPFC_ATT_LINK_UP;
4816                 break;
4817         default:
4818                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4819                                 "0399 Invalid link attention type: x%x\n",
4820                                 bf_get(lpfc_acqe_link_status, acqe_link));
4821                 att_type = LPFC_ATT_RESERVED;
4822                 break;
4823         }
4824         return att_type;
4825 }
4826
4827 /**
4828  * lpfc_sli_port_speed_get - Get sli3 link speed code to link speed
4829  * @phba: pointer to lpfc hba data structure.
4830  *
4831  * This routine is to get an SLI3 FC port's link speed in Mbps.
4832  *
4833  * Return: link speed in terms of Mbps.
4834  **/
4835 uint32_t
4836 lpfc_sli_port_speed_get(struct lpfc_hba *phba)
4837 {
4838         uint32_t link_speed;
4839
4840         if (!lpfc_is_link_up(phba))
4841                 return 0;
4842
4843         if (phba->sli_rev <= LPFC_SLI_REV3) {
4844                 switch (phba->fc_linkspeed) {
4845                 case LPFC_LINK_SPEED_1GHZ:
4846                         link_speed = 1000;
4847                         break;
4848                 case LPFC_LINK_SPEED_2GHZ:
4849                         link_speed = 2000;
4850                         break;
4851                 case LPFC_LINK_SPEED_4GHZ:
4852                         link_speed = 4000;
4853                         break;
4854                 case LPFC_LINK_SPEED_8GHZ:
4855                         link_speed = 8000;
4856                         break;
4857                 case LPFC_LINK_SPEED_10GHZ:
4858                         link_speed = 10000;
4859                         break;
4860                 case LPFC_LINK_SPEED_16GHZ:
4861                         link_speed = 16000;
4862                         break;
4863                 default:
4864                         link_speed = 0;
4865                 }
4866         } else {
4867                 if (phba->sli4_hba.link_state.logical_speed)
4868                         link_speed =
4869                               phba->sli4_hba.link_state.logical_speed;
4870                 else
4871                         link_speed = phba->sli4_hba.link_state.speed;
4872         }
4873         return link_speed;
4874 }
4875
4876 /**
4877  * lpfc_sli4_port_speed_parse - Parse async evt link speed code to link speed
4878  * @phba: pointer to lpfc hba data structure.
4879  * @evt_code: asynchronous event code.
4880  * @speed_code: asynchronous event link speed code.
4881  *
4882  * This routine is to parse the giving SLI4 async event link speed code into
4883  * value of Mbps for the link speed.
4884  *
4885  * Return: link speed in terms of Mbps.
4886  **/
4887 static uint32_t
4888 lpfc_sli4_port_speed_parse(struct lpfc_hba *phba, uint32_t evt_code,
4889                            uint8_t speed_code)
4890 {
4891         uint32_t port_speed;
4892
4893         switch (evt_code) {
4894         case LPFC_TRAILER_CODE_LINK:
4895                 switch (speed_code) {
4896                 case LPFC_ASYNC_LINK_SPEED_ZERO:
4897                         port_speed = 0;
4898                         break;
4899                 case LPFC_ASYNC_LINK_SPEED_10MBPS:
4900                         port_speed = 10;
4901                         break;
4902                 case LPFC_ASYNC_LINK_SPEED_100MBPS:
4903                         port_speed = 100;
4904                         break;
4905                 case LPFC_ASYNC_LINK_SPEED_1GBPS:
4906                         port_speed = 1000;
4907                         break;
4908                 case LPFC_ASYNC_LINK_SPEED_10GBPS:
4909                         port_speed = 10000;
4910                         break;
4911                 case LPFC_ASYNC_LINK_SPEED_20GBPS:
4912                         port_speed = 20000;
4913                         break;
4914                 case LPFC_ASYNC_LINK_SPEED_25GBPS:
4915                         port_speed = 25000;
4916                         break;
4917                 case LPFC_ASYNC_LINK_SPEED_40GBPS:
4918                         port_speed = 40000;
4919                         break;
4920                 case LPFC_ASYNC_LINK_SPEED_100GBPS:
4921                         port_speed = 100000;
4922                         break;
4923                 default:
4924                         port_speed = 0;
4925                 }
4926                 break;
4927         case LPFC_TRAILER_CODE_FC:
4928                 switch (speed_code) {
4929                 case LPFC_FC_LA_SPEED_UNKNOWN:
4930                         port_speed = 0;
4931                         break;
4932                 case LPFC_FC_LA_SPEED_1G:
4933                         port_speed = 1000;
4934                         break;
4935                 case LPFC_FC_LA_SPEED_2G:
4936                         port_speed = 2000;
4937                         break;
4938                 case LPFC_FC_LA_SPEED_4G:
4939                         port_speed = 4000;
4940                         break;
4941                 case LPFC_FC_LA_SPEED_8G:
4942                         port_speed = 8000;
4943                         break;
4944                 case LPFC_FC_LA_SPEED_10G:
4945                         port_speed = 10000;
4946                         break;
4947                 case LPFC_FC_LA_SPEED_16G:
4948                         port_speed = 16000;
4949                         break;
4950                 case LPFC_FC_LA_SPEED_32G:
4951                         port_speed = 32000;
4952                         break;
4953                 case LPFC_FC_LA_SPEED_64G:
4954                         port_speed = 64000;
4955                         break;
4956                 case LPFC_FC_LA_SPEED_128G:
4957                         port_speed = 128000;
4958                         break;
4959                 default:
4960                         port_speed = 0;
4961                 }
4962                 break;
4963         default:
4964                 port_speed = 0;
4965         }
4966         return port_speed;
4967 }
4968
4969 /**
4970  * lpfc_sli4_async_link_evt - Process the asynchronous FCoE link event
4971  * @phba: pointer to lpfc hba data structure.
4972  * @acqe_link: pointer to the async link completion queue entry.
4973  *
4974  * This routine is to handle the SLI4 asynchronous FCoE link event.
4975  **/
4976 static void
4977 lpfc_sli4_async_link_evt(struct lpfc_hba *phba,
4978                          struct lpfc_acqe_link *acqe_link)
4979 {
4980         struct lpfc_dmabuf *mp;
4981         LPFC_MBOXQ_t *pmb;
4982         MAILBOX_t *mb;
4983         struct lpfc_mbx_read_top *la;
4984         uint8_t att_type;
4985         int rc;
4986
4987         att_type = lpfc_sli4_parse_latt_type(phba, acqe_link);
4988         if (att_type != LPFC_ATT_LINK_DOWN && att_type != LPFC_ATT_LINK_UP)
4989                 return;
4990         phba->fcoe_eventtag = acqe_link->event_tag;
4991         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4992         if (!pmb) {
4993                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4994                                 "0395 The mboxq allocation failed\n");
4995                 return;
4996         }
4997         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
4998         if (!mp) {
4999                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5000                                 "0396 The lpfc_dmabuf allocation failed\n");
5001                 goto out_free_pmb;
5002         }
5003         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
5004         if (!mp->virt) {
5005                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5006                                 "0397 The mbuf allocation failed\n");
5007                 goto out_free_dmabuf;
5008         }
5009
5010         /* Cleanup any outstanding ELS commands */
5011         lpfc_els_flush_all_cmd(phba);
5012
5013         /* Block ELS IOCBs until we have done process link event */
5014         phba->sli4_hba.els_wq->pring->flag |= LPFC_STOP_IOCB_EVENT;
5015
5016         /* Update link event statistics */
5017         phba->sli.slistat.link_event++;
5018
5019         /* Create lpfc_handle_latt mailbox command from link ACQE */
5020         lpfc_read_topology(phba, pmb, mp);
5021         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
5022         pmb->vport = phba->pport;
5023
5024         /* Keep the link status for extra SLI4 state machine reference */
5025         phba->sli4_hba.link_state.speed =
5026                         lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_LINK,
5027                                 bf_get(lpfc_acqe_link_speed, acqe_link));
5028         phba->sli4_hba.link_state.duplex =
5029                                 bf_get(lpfc_acqe_link_duplex, acqe_link);
5030         phba->sli4_hba.link_state.status =
5031                                 bf_get(lpfc_acqe_link_status, acqe_link);
5032         phba->sli4_hba.link_state.type =
5033                                 bf_get(lpfc_acqe_link_type, acqe_link);
5034         phba->sli4_hba.link_state.number =
5035                                 bf_get(lpfc_acqe_link_number, acqe_link);
5036         phba->sli4_hba.link_state.fault =
5037                                 bf_get(lpfc_acqe_link_fault, acqe_link);
5038         phba->sli4_hba.link_state.logical_speed =
5039                         bf_get(lpfc_acqe_logical_link_speed, acqe_link) * 10;
5040
5041         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5042                         "2900 Async FC/FCoE Link event - Speed:%dGBit "
5043                         "duplex:x%x LA Type:x%x Port Type:%d Port Number:%d "
5044                         "Logical speed:%dMbps Fault:%d\n",
5045                         phba->sli4_hba.link_state.speed,
5046                         phba->sli4_hba.link_state.topology,
5047                         phba->sli4_hba.link_state.status,
5048                         phba->sli4_hba.link_state.type,
5049                         phba->sli4_hba.link_state.number,
5050                         phba->sli4_hba.link_state.logical_speed,
5051                         phba->sli4_hba.link_state.fault);
5052         /*
5053          * For FC Mode: issue the READ_TOPOLOGY mailbox command to fetch
5054          * topology info. Note: Optional for non FC-AL ports.
5055          */
5056         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
5057                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
5058                 if (rc == MBX_NOT_FINISHED)
5059                         goto out_free_dmabuf;
5060                 return;
5061         }
5062         /*
5063          * For FCoE Mode: fill in all the topology information we need and call
5064          * the READ_TOPOLOGY completion routine to continue without actually
5065          * sending the READ_TOPOLOGY mailbox command to the port.
5066          */
5067         /* Initialize completion status */
5068         mb = &pmb->u.mb;
5069         mb->mbxStatus = MBX_SUCCESS;
5070
5071         /* Parse port fault information field */
5072         lpfc_sli4_parse_latt_fault(phba, acqe_link);
5073
5074         /* Parse and translate link attention fields */
5075         la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
5076         la->eventTag = acqe_link->event_tag;
5077         bf_set(lpfc_mbx_read_top_att_type, la, att_type);
5078         bf_set(lpfc_mbx_read_top_link_spd, la,
5079                (bf_get(lpfc_acqe_link_speed, acqe_link)));
5080
5081         /* Fake the the following irrelvant fields */
5082         bf_set(lpfc_mbx_read_top_topology, la, LPFC_TOPOLOGY_PT_PT);
5083         bf_set(lpfc_mbx_read_top_alpa_granted, la, 0);
5084         bf_set(lpfc_mbx_read_top_il, la, 0);
5085         bf_set(lpfc_mbx_read_top_pb, la, 0);
5086         bf_set(lpfc_mbx_read_top_fa, la, 0);
5087         bf_set(lpfc_mbx_read_top_mm, la, 0);
5088
5089         /* Invoke the lpfc_handle_latt mailbox command callback function */
5090         lpfc_mbx_cmpl_read_topology(phba, pmb);
5091
5092         return;
5093
5094 out_free_dmabuf:
5095         kfree(mp);
5096 out_free_pmb:
5097         mempool_free(pmb, phba->mbox_mem_pool);
5098 }
5099
5100 /**
5101  * lpfc_async_link_speed_to_read_top - Parse async evt link speed code to read
5102  * topology.
5103  * @phba: pointer to lpfc hba data structure.
5104  * @speed_code: asynchronous event link speed code.
5105  *
5106  * This routine is to parse the giving SLI4 async event link speed code into
5107  * value of Read topology link speed.
5108  *
5109  * Return: link speed in terms of Read topology.
5110  **/
5111 static uint8_t
5112 lpfc_async_link_speed_to_read_top(struct lpfc_hba *phba, uint8_t speed_code)
5113 {
5114         uint8_t port_speed;
5115
5116         switch (speed_code) {
5117         case LPFC_FC_LA_SPEED_1G:
5118                 port_speed = LPFC_LINK_SPEED_1GHZ;
5119                 break;
5120         case LPFC_FC_LA_SPEED_2G:
5121                 port_speed = LPFC_LINK_SPEED_2GHZ;
5122                 break;
5123         case LPFC_FC_LA_SPEED_4G:
5124                 port_speed = LPFC_LINK_SPEED_4GHZ;
5125                 break;
5126         case LPFC_FC_LA_SPEED_8G:
5127                 port_speed = LPFC_LINK_SPEED_8GHZ;
5128                 break;
5129         case LPFC_FC_LA_SPEED_16G:
5130                 port_speed = LPFC_LINK_SPEED_16GHZ;
5131                 break;
5132         case LPFC_FC_LA_SPEED_32G:
5133                 port_speed = LPFC_LINK_SPEED_32GHZ;
5134                 break;
5135         case LPFC_FC_LA_SPEED_64G:
5136                 port_speed = LPFC_LINK_SPEED_64GHZ;
5137                 break;
5138         case LPFC_FC_LA_SPEED_128G:
5139                 port_speed = LPFC_LINK_SPEED_128GHZ;
5140                 break;
5141         case LPFC_FC_LA_SPEED_256G:
5142                 port_speed = LPFC_LINK_SPEED_256GHZ;
5143                 break;
5144         default:
5145                 port_speed = 0;
5146                 break;
5147         }
5148
5149         return port_speed;
5150 }
5151
5152 #define trunk_link_status(__idx)\
5153         bf_get(lpfc_acqe_fc_la_trunk_config_port##__idx, acqe_fc) ?\
5154                ((phba->trunk_link.link##__idx.state == LPFC_LINK_UP) ?\
5155                 "Link up" : "Link down") : "NA"
5156 /* Did port __idx reported an error */
5157 #define trunk_port_fault(__idx)\
5158         bf_get(lpfc_acqe_fc_la_trunk_config_port##__idx, acqe_fc) ?\
5159                (port_fault & (1 << __idx) ? "YES" : "NO") : "NA"
5160
5161 static void
5162 lpfc_update_trunk_link_status(struct lpfc_hba *phba,
5163                               struct lpfc_acqe_fc_la *acqe_fc)
5164 {
5165         uint8_t port_fault = bf_get(lpfc_acqe_fc_la_trunk_linkmask, acqe_fc);
5166         uint8_t err = bf_get(lpfc_acqe_fc_la_trunk_fault, acqe_fc);
5167
5168         phba->sli4_hba.link_state.speed =
5169                 lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_FC,
5170                                 bf_get(lpfc_acqe_fc_la_speed, acqe_fc));
5171
5172         phba->sli4_hba.link_state.logical_speed =
5173                                 bf_get(lpfc_acqe_fc_la_llink_spd, acqe_fc) * 10;
5174         /* We got FC link speed, convert to fc_linkspeed (READ_TOPOLOGY) */
5175         phba->fc_linkspeed =
5176                  lpfc_async_link_speed_to_read_top(
5177                                 phba,
5178                                 bf_get(lpfc_acqe_fc_la_speed, acqe_fc));
5179
5180         if (bf_get(lpfc_acqe_fc_la_trunk_config_port0, acqe_fc)) {
5181                 phba->trunk_link.link0.state =
5182                         bf_get(lpfc_acqe_fc_la_trunk_link_status_port0, acqe_fc)
5183                         ? LPFC_LINK_UP : LPFC_LINK_DOWN;
5184                 phba->trunk_link.link0.fault = port_fault & 0x1 ? err : 0;
5185         }
5186         if (bf_get(lpfc_acqe_fc_la_trunk_config_port1, acqe_fc)) {
5187                 phba->trunk_link.link1.state =
5188                         bf_get(lpfc_acqe_fc_la_trunk_link_status_port1, acqe_fc)
5189                         ? LPFC_LINK_UP : LPFC_LINK_DOWN;
5190                 phba->trunk_link.link1.fault = port_fault & 0x2 ? err : 0;
5191         }
5192         if (bf_get(lpfc_acqe_fc_la_trunk_config_port2, acqe_fc)) {
5193                 phba->trunk_link.link2.state =
5194                         bf_get(lpfc_acqe_fc_la_trunk_link_status_port2, acqe_fc)
5195                         ? LPFC_LINK_UP : LPFC_LINK_DOWN;
5196                 phba->trunk_link.link2.fault = port_fault & 0x4 ? err : 0;
5197         }
5198         if (bf_get(lpfc_acqe_fc_la_trunk_config_port3, acqe_fc)) {
5199                 phba->trunk_link.link3.state =
5200                         bf_get(lpfc_acqe_fc_la_trunk_link_status_port3, acqe_fc)
5201                         ? LPFC_LINK_UP : LPFC_LINK_DOWN;
5202                 phba->trunk_link.link3.fault = port_fault & 0x8 ? err : 0;
5203         }
5204
5205         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5206                         "2910 Async FC Trunking Event - Speed:%d\n"
5207                         "\tLogical speed:%d "
5208                         "port0: %s port1: %s port2: %s port3: %s\n",
5209                         phba->sli4_hba.link_state.speed,
5210                         phba->sli4_hba.link_state.logical_speed,
5211                         trunk_link_status(0), trunk_link_status(1),
5212                         trunk_link_status(2), trunk_link_status(3));
5213
5214         if (port_fault)
5215                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5216                                 "3202 trunk error:0x%x (%s) seen on port0:%s "
5217                                 /*
5218                                  * SLI-4: We have only 0xA error codes
5219                                  * defined as of now. print an appropriate
5220                                  * message in case driver needs to be updated.
5221                                  */
5222                                 "port1:%s port2:%s port3:%s\n", err, err > 0xA ?
5223                                 "UNDEFINED. update driver." : trunk_errmsg[err],
5224                                 trunk_port_fault(0), trunk_port_fault(1),
5225                                 trunk_port_fault(2), trunk_port_fault(3));
5226 }
5227
5228
5229 /**
5230  * lpfc_sli4_async_fc_evt - Process the asynchronous FC link event
5231  * @phba: pointer to lpfc hba data structure.
5232  * @acqe_fc: pointer to the async fc completion queue entry.
5233  *
5234  * This routine is to handle the SLI4 asynchronous FC event. It will simply log
5235  * that the event was received and then issue a read_topology mailbox command so
5236  * that the rest of the driver will treat it the same as SLI3.
5237  **/
5238 static void
5239 lpfc_sli4_async_fc_evt(struct lpfc_hba *phba, struct lpfc_acqe_fc_la *acqe_fc)
5240 {
5241         struct lpfc_dmabuf *mp;
5242         LPFC_MBOXQ_t *pmb;
5243         MAILBOX_t *mb;
5244         struct lpfc_mbx_read_top *la;
5245         int rc;
5246
5247         if (bf_get(lpfc_trailer_type, acqe_fc) !=
5248             LPFC_FC_LA_EVENT_TYPE_FC_LINK) {
5249                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5250                                 "2895 Non FC link Event detected.(%d)\n",
5251                                 bf_get(lpfc_trailer_type, acqe_fc));
5252                 return;
5253         }
5254
5255         if (bf_get(lpfc_acqe_fc_la_att_type, acqe_fc) ==
5256             LPFC_FC_LA_TYPE_TRUNKING_EVENT) {
5257                 lpfc_update_trunk_link_status(phba, acqe_fc);
5258                 return;
5259         }
5260
5261         /* Keep the link status for extra SLI4 state machine reference */
5262         phba->sli4_hba.link_state.speed =
5263                         lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_FC,
5264                                 bf_get(lpfc_acqe_fc_la_speed, acqe_fc));
5265         phba->sli4_hba.link_state.duplex = LPFC_ASYNC_LINK_DUPLEX_FULL;
5266         phba->sli4_hba.link_state.topology =
5267                                 bf_get(lpfc_acqe_fc_la_topology, acqe_fc);
5268         phba->sli4_hba.link_state.status =
5269                                 bf_get(lpfc_acqe_fc_la_att_type, acqe_fc);
5270         phba->sli4_hba.link_state.type =
5271                                 bf_get(lpfc_acqe_fc_la_port_type, acqe_fc);
5272         phba->sli4_hba.link_state.number =
5273                                 bf_get(lpfc_acqe_fc_la_port_number, acqe_fc);
5274         phba->sli4_hba.link_state.fault =
5275                                 bf_get(lpfc_acqe_link_fault, acqe_fc);
5276
5277         if (bf_get(lpfc_acqe_fc_la_att_type, acqe_fc) ==
5278             LPFC_FC_LA_TYPE_LINK_DOWN)
5279                 phba->sli4_hba.link_state.logical_speed = 0;
5280         else if (!phba->sli4_hba.conf_trunk)
5281                 phba->sli4_hba.link_state.logical_speed =
5282                                 bf_get(lpfc_acqe_fc_la_llink_spd, acqe_fc) * 10;
5283
5284         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5285                         "2896 Async FC event - Speed:%dGBaud Topology:x%x "
5286                         "LA Type:x%x Port Type:%d Port Number:%d Logical speed:"
5287                         "%dMbps Fault:%d\n",
5288                         phba->sli4_hba.link_state.speed,
5289                         phba->sli4_hba.link_state.topology,
5290                         phba->sli4_hba.link_state.status,
5291                         phba->sli4_hba.link_state.type,
5292                         phba->sli4_hba.link_state.number,
5293                         phba->sli4_hba.link_state.logical_speed,
5294                         phba->sli4_hba.link_state.fault);
5295         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5296         if (!pmb) {
5297                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5298                                 "2897 The mboxq allocation failed\n");
5299                 return;
5300         }
5301         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
5302         if (!mp) {
5303                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5304                                 "2898 The lpfc_dmabuf allocation failed\n");
5305                 goto out_free_pmb;
5306         }
5307         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
5308         if (!mp->virt) {
5309                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5310                                 "2899 The mbuf allocation failed\n");
5311                 goto out_free_dmabuf;
5312         }
5313
5314         /* Cleanup any outstanding ELS commands */
5315         lpfc_els_flush_all_cmd(phba);
5316
5317         /* Block ELS IOCBs until we have done process link event */
5318         phba->sli4_hba.els_wq->pring->flag |= LPFC_STOP_IOCB_EVENT;
5319
5320         /* Update link event statistics */
5321         phba->sli.slistat.link_event++;
5322
5323         /* Create lpfc_handle_latt mailbox command from link ACQE */
5324         lpfc_read_topology(phba, pmb, mp);
5325         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
5326         pmb->vport = phba->pport;
5327
5328         if (phba->sli4_hba.link_state.status != LPFC_FC_LA_TYPE_LINK_UP) {
5329                 phba->link_flag &= ~(LS_MDS_LINK_DOWN | LS_MDS_LOOPBACK);
5330
5331                 switch (phba->sli4_hba.link_state.status) {
5332                 case LPFC_FC_LA_TYPE_MDS_LINK_DOWN:
5333                         phba->link_flag |= LS_MDS_LINK_DOWN;
5334                         break;
5335                 case LPFC_FC_LA_TYPE_MDS_LOOPBACK:
5336                         phba->link_flag |= LS_MDS_LOOPBACK;
5337                         break;
5338                 default:
5339                         break;
5340                 }
5341
5342                 /* Initialize completion status */
5343                 mb = &pmb->u.mb;
5344                 mb->mbxStatus = MBX_SUCCESS;
5345
5346                 /* Parse port fault information field */
5347                 lpfc_sli4_parse_latt_fault(phba, (void *)acqe_fc);
5348
5349                 /* Parse and translate link attention fields */
5350                 la = (struct lpfc_mbx_read_top *)&pmb->u.mb.un.varReadTop;
5351                 la->eventTag = acqe_fc->event_tag;
5352
5353                 if (phba->sli4_hba.link_state.status ==
5354                     LPFC_FC_LA_TYPE_UNEXP_WWPN) {
5355                         bf_set(lpfc_mbx_read_top_att_type, la,
5356                                LPFC_FC_LA_TYPE_UNEXP_WWPN);
5357                 } else {
5358                         bf_set(lpfc_mbx_read_top_att_type, la,
5359                                LPFC_FC_LA_TYPE_LINK_DOWN);
5360                 }
5361                 /* Invoke the mailbox command callback function */
5362                 lpfc_mbx_cmpl_read_topology(phba, pmb);
5363
5364                 return;
5365         }
5366
5367         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
5368         if (rc == MBX_NOT_FINISHED)
5369                 goto out_free_dmabuf;
5370         return;
5371
5372 out_free_dmabuf:
5373         kfree(mp);
5374 out_free_pmb:
5375         mempool_free(pmb, phba->mbox_mem_pool);
5376 }
5377
5378 /**
5379  * lpfc_sli4_async_sli_evt - Process the asynchronous SLI link event
5380  * @phba: pointer to lpfc hba data structure.
5381  * @acqe_sli: pointer to the async SLI completion queue entry.
5382  *
5383  * This routine is to handle the SLI4 asynchronous SLI events.
5384  **/
5385 static void
5386 lpfc_sli4_async_sli_evt(struct lpfc_hba *phba, struct lpfc_acqe_sli *acqe_sli)
5387 {
5388         char port_name;
5389         char message[128];
5390         uint8_t status;
5391         uint8_t evt_type;
5392         uint8_t operational = 0;
5393         struct temp_event temp_event_data;
5394         struct lpfc_acqe_misconfigured_event *misconfigured;
5395         struct Scsi_Host  *shost;
5396         struct lpfc_vport **vports;
5397         int rc, i;
5398
5399         evt_type = bf_get(lpfc_trailer_type, acqe_sli);
5400
5401         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5402                         "2901 Async SLI event - Type:%d, Event Data: x%08x "
5403                         "x%08x x%08x x%08x\n", evt_type,
5404                         acqe_sli->event_data1, acqe_sli->event_data2,
5405                         acqe_sli->reserved, acqe_sli->trailer);
5406
5407         port_name = phba->Port[0];
5408         if (port_name == 0x00)
5409                 port_name = '?'; /* get port name is empty */
5410
5411         switch (evt_type) {
5412         case LPFC_SLI_EVENT_TYPE_OVER_TEMP:
5413                 temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
5414                 temp_event_data.event_code = LPFC_THRESHOLD_TEMP;
5415                 temp_event_data.data = (uint32_t)acqe_sli->event_data1;
5416
5417                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
5418                                 "3190 Over Temperature:%d Celsius- Port Name %c\n",
5419                                 acqe_sli->event_data1, port_name);
5420
5421                 phba->sfp_warning |= LPFC_TRANSGRESSION_HIGH_TEMPERATURE;
5422                 shost = lpfc_shost_from_vport(phba->pport);
5423                 fc_host_post_vendor_event(shost, fc_get_event_number(),
5424                                           sizeof(temp_event_data),
5425                                           (char *)&temp_event_data,
5426                                           SCSI_NL_VID_TYPE_PCI
5427                                           | PCI_VENDOR_ID_EMULEX);
5428                 break;
5429         case LPFC_SLI_EVENT_TYPE_NORM_TEMP:
5430                 temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
5431                 temp_event_data.event_code = LPFC_NORMAL_TEMP;
5432                 temp_event_data.data = (uint32_t)acqe_sli->event_data1;
5433
5434                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5435                                 "3191 Normal Temperature:%d Celsius - Port Name %c\n",
5436                                 acqe_sli->event_data1, port_name);
5437
5438                 shost = lpfc_shost_from_vport(phba->pport);
5439                 fc_host_post_vendor_event(shost, fc_get_event_number(),
5440                                           sizeof(temp_event_data),
5441                                           (char *)&temp_event_data,
5442                                           SCSI_NL_VID_TYPE_PCI
5443                                           | PCI_VENDOR_ID_EMULEX);
5444                 break;
5445         case LPFC_SLI_EVENT_TYPE_MISCONFIGURED:
5446                 misconfigured = (struct lpfc_acqe_misconfigured_event *)
5447                                         &acqe_sli->event_data1;
5448
5449                 /* fetch the status for this port */
5450                 switch (phba->sli4_hba.lnk_info.lnk_no) {
5451                 case LPFC_LINK_NUMBER_0:
5452                         status = bf_get(lpfc_sli_misconfigured_port0_state,
5453                                         &misconfigured->theEvent);
5454                         operational = bf_get(lpfc_sli_misconfigured_port0_op,
5455                                         &misconfigured->theEvent);
5456                         break;
5457                 case LPFC_LINK_NUMBER_1:
5458                         status = bf_get(lpfc_sli_misconfigured_port1_state,
5459                                         &misconfigured->theEvent);
5460                         operational = bf_get(lpfc_sli_misconfigured_port1_op,
5461                                         &misconfigured->theEvent);
5462                         break;
5463                 case LPFC_LINK_NUMBER_2:
5464                         status = bf_get(lpfc_sli_misconfigured_port2_state,
5465                                         &misconfigured->theEvent);
5466                         operational = bf_get(lpfc_sli_misconfigured_port2_op,
5467                                         &misconfigured->theEvent);
5468                         break;
5469                 case LPFC_LINK_NUMBER_3:
5470                         status = bf_get(lpfc_sli_misconfigured_port3_state,
5471                                         &misconfigured->theEvent);
5472                         operational = bf_get(lpfc_sli_misconfigured_port3_op,
5473                                         &misconfigured->theEvent);
5474                         break;
5475                 default:
5476                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5477                                         "3296 "
5478                                         "LPFC_SLI_EVENT_TYPE_MISCONFIGURED "
5479                                         "event: Invalid link %d",
5480                                         phba->sli4_hba.lnk_info.lnk_no);
5481                         return;
5482                 }
5483
5484                 /* Skip if optic state unchanged */
5485                 if (phba->sli4_hba.lnk_info.optic_state == status)
5486                         return;
5487
5488                 switch (status) {
5489                 case LPFC_SLI_EVENT_STATUS_VALID:
5490                         sprintf(message, "Physical Link is functional");
5491                         break;
5492                 case LPFC_SLI_EVENT_STATUS_NOT_PRESENT:
5493                         sprintf(message, "Optics faulted/incorrectly "
5494                                 "installed/not installed - Reseat optics, "
5495                                 "if issue not resolved, replace.");
5496                         break;
5497                 case LPFC_SLI_EVENT_STATUS_WRONG_TYPE:
5498                         sprintf(message,
5499                                 "Optics of two types installed - Remove one "
5500                                 "optic or install matching pair of optics.");
5501                         break;
5502                 case LPFC_SLI_EVENT_STATUS_UNSUPPORTED:
5503                         sprintf(message, "Incompatible optics - Replace with "
5504                                 "compatible optics for card to function.");
5505                         break;
5506                 case LPFC_SLI_EVENT_STATUS_UNQUALIFIED:
5507                         sprintf(message, "Unqualified optics - Replace with "
5508                                 "Avago optics for Warranty and Technical "
5509                                 "Support - Link is%s operational",
5510                                 (operational) ? " not" : "");
5511                         break;
5512                 case LPFC_SLI_EVENT_STATUS_UNCERTIFIED:
5513                         sprintf(message, "Uncertified optics - Replace with "
5514                                 "Avago-certified optics to enable link "
5515                                 "operation - Link is%s operational",
5516                                 (operational) ? " not" : "");
5517                         break;
5518                 default:
5519                         /* firmware is reporting a status we don't know about */
5520                         sprintf(message, "Unknown event status x%02x", status);
5521                         break;
5522                 }
5523
5524                 /* Issue READ_CONFIG mbox command to refresh supported speeds */
5525                 rc = lpfc_sli4_read_config(phba);
5526                 if (rc) {
5527                         phba->lmt = 0;
5528                         lpfc_printf_log(phba, KERN_ERR,
5529                                         LOG_TRACE_EVENT,
5530                                         "3194 Unable to retrieve supported "
5531                                         "speeds, rc = 0x%x\n", rc);
5532                 }
5533                 vports = lpfc_create_vport_work_array(phba);
5534                 if (vports != NULL) {
5535                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
5536                                         i++) {
5537                                 shost = lpfc_shost_from_vport(vports[i]);
5538                                 lpfc_host_supported_speeds_set(shost);
5539                         }
5540                 }
5541                 lpfc_destroy_vport_work_array(phba, vports);
5542
5543                 phba->sli4_hba.lnk_info.optic_state = status;
5544                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5545                                 "3176 Port Name %c %s\n", port_name, message);
5546                 break;
5547         case LPFC_SLI_EVENT_TYPE_REMOTE_DPORT:
5548                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5549                                 "3192 Remote DPort Test Initiated - "
5550                                 "Event Data1:x%08x Event Data2: x%08x\n",
5551                                 acqe_sli->event_data1, acqe_sli->event_data2);
5552                 break;
5553         case LPFC_SLI_EVENT_TYPE_MISCONF_FAWWN:
5554                 /* Misconfigured WWN. Reports that the SLI Port is configured
5555                  * to use FA-WWN, but the attached device doesn’t support it.
5556                  * No driver action is required.
5557                  * Event Data1 - N.A, Event Data2 - N.A
5558                  */
5559                 lpfc_log_msg(phba, KERN_WARNING, LOG_SLI,
5560                              "2699 Misconfigured FA-WWN - Attached device does "
5561                              "not support FA-WWN\n");
5562                 break;
5563         case LPFC_SLI_EVENT_TYPE_EEPROM_FAILURE:
5564                 /* EEPROM failure. No driver action is required */
5565                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
5566                              "2518 EEPROM failure - "
5567                              "Event Data1: x%08x Event Data2: x%08x\n",
5568                              acqe_sli->event_data1, acqe_sli->event_data2);
5569                 break;
5570         default:
5571                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5572                                 "3193 Unrecognized SLI event, type: 0x%x",
5573                                 evt_type);
5574                 break;
5575         }
5576 }
5577
5578 /**
5579  * lpfc_sli4_perform_vport_cvl - Perform clear virtual link on a vport
5580  * @vport: pointer to vport data structure.
5581  *
5582  * This routine is to perform Clear Virtual Link (CVL) on a vport in
5583  * response to a CVL event.
5584  *
5585  * Return the pointer to the ndlp with the vport if successful, otherwise
5586  * return NULL.
5587  **/
5588 static struct lpfc_nodelist *
5589 lpfc_sli4_perform_vport_cvl(struct lpfc_vport *vport)
5590 {
5591         struct lpfc_nodelist *ndlp;
5592         struct Scsi_Host *shost;
5593         struct lpfc_hba *phba;
5594
5595         if (!vport)
5596                 return NULL;
5597         phba = vport->phba;
5598         if (!phba)
5599                 return NULL;
5600         ndlp = lpfc_findnode_did(vport, Fabric_DID);
5601         if (!ndlp) {
5602                 /* Cannot find existing Fabric ndlp, so allocate a new one */
5603                 ndlp = lpfc_nlp_init(vport, Fabric_DID);
5604                 if (!ndlp)
5605                         return 0;
5606                 /* Set the node type */
5607                 ndlp->nlp_type |= NLP_FABRIC;
5608                 /* Put ndlp onto node list */
5609                 lpfc_enqueue_node(vport, ndlp);
5610         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
5611                 /* re-setup ndlp without removing from node list */
5612                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
5613                 if (!ndlp)
5614                         return 0;
5615         }
5616         if ((phba->pport->port_state < LPFC_FLOGI) &&
5617                 (phba->pport->port_state != LPFC_VPORT_FAILED))
5618                 return NULL;
5619         /* If virtual link is not yet instantiated ignore CVL */
5620         if ((vport != phba->pport) && (vport->port_state < LPFC_FDISC)
5621                 && (vport->port_state != LPFC_VPORT_FAILED))
5622                 return NULL;
5623         shost = lpfc_shost_from_vport(vport);
5624         if (!shost)
5625                 return NULL;
5626         lpfc_linkdown_port(vport);
5627         lpfc_cleanup_pending_mbox(vport);
5628         spin_lock_irq(shost->host_lock);
5629         vport->fc_flag |= FC_VPORT_CVL_RCVD;
5630         spin_unlock_irq(shost->host_lock);
5631
5632         return ndlp;
5633 }
5634
5635 /**
5636  * lpfc_sli4_perform_all_vport_cvl - Perform clear virtual link on all vports
5637  * @phba: pointer to lpfc hba data structure.
5638  *
5639  * This routine is to perform Clear Virtual Link (CVL) on all vports in
5640  * response to a FCF dead event.
5641  **/
5642 static void
5643 lpfc_sli4_perform_all_vport_cvl(struct lpfc_hba *phba)
5644 {
5645         struct lpfc_vport **vports;
5646         int i;
5647
5648         vports = lpfc_create_vport_work_array(phba);
5649         if (vports)
5650                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
5651                         lpfc_sli4_perform_vport_cvl(vports[i]);
5652         lpfc_destroy_vport_work_array(phba, vports);
5653 }
5654
5655 /**
5656  * lpfc_sli4_async_fip_evt - Process the asynchronous FCoE FIP event
5657  * @phba: pointer to lpfc hba data structure.
5658  * @acqe_fip: pointer to the async fcoe completion queue entry.
5659  *
5660  * This routine is to handle the SLI4 asynchronous fcoe event.
5661  **/
5662 static void
5663 lpfc_sli4_async_fip_evt(struct lpfc_hba *phba,
5664                         struct lpfc_acqe_fip *acqe_fip)
5665 {
5666         uint8_t event_type = bf_get(lpfc_trailer_type, acqe_fip);
5667         int rc;
5668         struct lpfc_vport *vport;
5669         struct lpfc_nodelist *ndlp;
5670         struct Scsi_Host  *shost;
5671         int active_vlink_present;
5672         struct lpfc_vport **vports;
5673         int i;
5674
5675         phba->fc_eventTag = acqe_fip->event_tag;
5676         phba->fcoe_eventtag = acqe_fip->event_tag;
5677         switch (event_type) {
5678         case LPFC_FIP_EVENT_TYPE_NEW_FCF:
5679         case LPFC_FIP_EVENT_TYPE_FCF_PARAM_MOD:
5680                 if (event_type == LPFC_FIP_EVENT_TYPE_NEW_FCF)
5681                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5682                                         "2546 New FCF event, evt_tag:x%x, "
5683                                         "index:x%x\n",
5684                                         acqe_fip->event_tag,
5685                                         acqe_fip->index);
5686                 else
5687                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP |
5688                                         LOG_DISCOVERY,
5689                                         "2788 FCF param modified event, "
5690                                         "evt_tag:x%x, index:x%x\n",
5691                                         acqe_fip->event_tag,
5692                                         acqe_fip->index);
5693                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
5694                         /*
5695                          * During period of FCF discovery, read the FCF
5696                          * table record indexed by the event to update
5697                          * FCF roundrobin failover eligible FCF bmask.
5698                          */
5699                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
5700                                         LOG_DISCOVERY,
5701                                         "2779 Read FCF (x%x) for updating "
5702                                         "roundrobin FCF failover bmask\n",
5703                                         acqe_fip->index);
5704                         rc = lpfc_sli4_read_fcf_rec(phba, acqe_fip->index);
5705                 }
5706
5707                 /* If the FCF discovery is in progress, do nothing. */
5708                 spin_lock_irq(&phba->hbalock);
5709                 if (phba->hba_flag & FCF_TS_INPROG) {
5710                         spin_unlock_irq(&phba->hbalock);
5711                         break;
5712                 }
5713                 /* If fast FCF failover rescan event is pending, do nothing */
5714                 if (phba->fcf.fcf_flag & (FCF_REDISC_EVT | FCF_REDISC_PEND)) {
5715                         spin_unlock_irq(&phba->hbalock);
5716                         break;
5717                 }
5718
5719                 /* If the FCF has been in discovered state, do nothing. */
5720                 if (phba->fcf.fcf_flag & FCF_SCAN_DONE) {
5721                         spin_unlock_irq(&phba->hbalock);
5722                         break;
5723                 }
5724                 spin_unlock_irq(&phba->hbalock);
5725
5726                 /* Otherwise, scan the entire FCF table and re-discover SAN */
5727                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
5728                                 "2770 Start FCF table scan per async FCF "
5729                                 "event, evt_tag:x%x, index:x%x\n",
5730                                 acqe_fip->event_tag, acqe_fip->index);
5731                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
5732                                                      LPFC_FCOE_FCF_GET_FIRST);
5733                 if (rc)
5734                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5735                                         "2547 Issue FCF scan read FCF mailbox "
5736                                         "command failed (x%x)\n", rc);
5737                 break;
5738
5739         case LPFC_FIP_EVENT_TYPE_FCF_TABLE_FULL:
5740                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5741                                 "2548 FCF Table full count 0x%x tag 0x%x\n",
5742                                 bf_get(lpfc_acqe_fip_fcf_count, acqe_fip),
5743                                 acqe_fip->event_tag);
5744                 break;
5745
5746         case LPFC_FIP_EVENT_TYPE_FCF_DEAD:
5747                 phba->fcoe_cvl_eventtag = acqe_fip->event_tag;
5748                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5749                                 "2549 FCF (x%x) disconnected from network, "
5750                                  "tag:x%x\n", acqe_fip->index,
5751                                  acqe_fip->event_tag);
5752                 /*
5753                  * If we are in the middle of FCF failover process, clear
5754                  * the corresponding FCF bit in the roundrobin bitmap.
5755                  */
5756                 spin_lock_irq(&phba->hbalock);
5757                 if ((phba->fcf.fcf_flag & FCF_DISCOVERY) &&
5758                     (phba->fcf.current_rec.fcf_indx != acqe_fip->index)) {
5759                         spin_unlock_irq(&phba->hbalock);
5760                         /* Update FLOGI FCF failover eligible FCF bmask */
5761                         lpfc_sli4_fcf_rr_index_clear(phba, acqe_fip->index);
5762                         break;
5763                 }
5764                 spin_unlock_irq(&phba->hbalock);
5765
5766                 /* If the event is not for currently used fcf do nothing */
5767                 if (phba->fcf.current_rec.fcf_indx != acqe_fip->index)
5768                         break;
5769
5770                 /*
5771                  * Otherwise, request the port to rediscover the entire FCF
5772                  * table for a fast recovery from case that the current FCF
5773                  * is no longer valid as we are not in the middle of FCF
5774                  * failover process already.
5775                  */
5776                 spin_lock_irq(&phba->hbalock);
5777                 /* Mark the fast failover process in progress */
5778                 phba->fcf.fcf_flag |= FCF_DEAD_DISC;
5779                 spin_unlock_irq(&phba->hbalock);
5780
5781                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
5782                                 "2771 Start FCF fast failover process due to "
5783                                 "FCF DEAD event: evt_tag:x%x, fcf_index:x%x "
5784                                 "\n", acqe_fip->event_tag, acqe_fip->index);
5785                 rc = lpfc_sli4_redisc_fcf_table(phba);
5786                 if (rc) {
5787                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
5788                                         LOG_TRACE_EVENT,
5789                                         "2772 Issue FCF rediscover mailbox "
5790                                         "command failed, fail through to FCF "
5791                                         "dead event\n");
5792                         spin_lock_irq(&phba->hbalock);
5793                         phba->fcf.fcf_flag &= ~FCF_DEAD_DISC;
5794                         spin_unlock_irq(&phba->hbalock);
5795                         /*
5796                          * Last resort will fail over by treating this
5797                          * as a link down to FCF registration.
5798                          */
5799                         lpfc_sli4_fcf_dead_failthrough(phba);
5800                 } else {
5801                         /* Reset FCF roundrobin bmask for new discovery */
5802                         lpfc_sli4_clear_fcf_rr_bmask(phba);
5803                         /*
5804                          * Handling fast FCF failover to a DEAD FCF event is
5805                          * considered equalivant to receiving CVL to all vports.
5806                          */
5807                         lpfc_sli4_perform_all_vport_cvl(phba);
5808                 }
5809                 break;
5810         case LPFC_FIP_EVENT_TYPE_CVL:
5811                 phba->fcoe_cvl_eventtag = acqe_fip->event_tag;
5812                 lpfc_printf_log(phba, KERN_ERR,
5813                                 LOG_TRACE_EVENT,
5814                         "2718 Clear Virtual Link Received for VPI 0x%x"
5815                         " tag 0x%x\n", acqe_fip->index, acqe_fip->event_tag);
5816
5817                 vport = lpfc_find_vport_by_vpid(phba,
5818                                                 acqe_fip->index);
5819                 ndlp = lpfc_sli4_perform_vport_cvl(vport);
5820                 if (!ndlp)
5821                         break;
5822                 active_vlink_present = 0;
5823
5824                 vports = lpfc_create_vport_work_array(phba);
5825                 if (vports) {
5826                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
5827                                         i++) {
5828                                 if ((!(vports[i]->fc_flag &
5829                                         FC_VPORT_CVL_RCVD)) &&
5830                                         (vports[i]->port_state > LPFC_FDISC)) {
5831                                         active_vlink_present = 1;
5832                                         break;
5833                                 }
5834                         }
5835                         lpfc_destroy_vport_work_array(phba, vports);
5836                 }
5837
5838                 /*
5839                  * Don't re-instantiate if vport is marked for deletion.
5840                  * If we are here first then vport_delete is going to wait
5841                  * for discovery to complete.
5842                  */
5843                 if (!(vport->load_flag & FC_UNLOADING) &&
5844                                         active_vlink_present) {
5845                         /*
5846                          * If there are other active VLinks present,
5847                          * re-instantiate the Vlink using FDISC.
5848                          */
5849                         mod_timer(&ndlp->nlp_delayfunc,
5850                                   jiffies + msecs_to_jiffies(1000));
5851                         shost = lpfc_shost_from_vport(vport);
5852                         spin_lock_irq(shost->host_lock);
5853                         ndlp->nlp_flag |= NLP_DELAY_TMO;
5854                         spin_unlock_irq(shost->host_lock);
5855                         ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
5856                         vport->port_state = LPFC_FDISC;
5857                 } else {
5858                         /*
5859                          * Otherwise, we request port to rediscover
5860                          * the entire FCF table for a fast recovery
5861                          * from possible case that the current FCF
5862                          * is no longer valid if we are not already
5863                          * in the FCF failover process.
5864                          */
5865                         spin_lock_irq(&phba->hbalock);
5866                         if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
5867                                 spin_unlock_irq(&phba->hbalock);
5868                                 break;
5869                         }
5870                         /* Mark the fast failover process in progress */
5871                         phba->fcf.fcf_flag |= FCF_ACVL_DISC;
5872                         spin_unlock_irq(&phba->hbalock);
5873                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
5874                                         LOG_DISCOVERY,
5875                                         "2773 Start FCF failover per CVL, "
5876                                         "evt_tag:x%x\n", acqe_fip->event_tag);
5877                         rc = lpfc_sli4_redisc_fcf_table(phba);
5878                         if (rc) {
5879                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
5880                                                 LOG_TRACE_EVENT,
5881                                                 "2774 Issue FCF rediscover "
5882                                                 "mailbox command failed, "
5883                                                 "through to CVL event\n");
5884                                 spin_lock_irq(&phba->hbalock);
5885                                 phba->fcf.fcf_flag &= ~FCF_ACVL_DISC;
5886                                 spin_unlock_irq(&phba->hbalock);
5887                                 /*
5888                                  * Last resort will be re-try on the
5889                                  * the current registered FCF entry.
5890                                  */
5891                                 lpfc_retry_pport_discovery(phba);
5892                         } else
5893                                 /*
5894                                  * Reset FCF roundrobin bmask for new
5895                                  * discovery.
5896                                  */
5897                                 lpfc_sli4_clear_fcf_rr_bmask(phba);
5898                 }
5899                 break;
5900         default:
5901                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5902                                 "0288 Unknown FCoE event type 0x%x event tag "
5903                                 "0x%x\n", event_type, acqe_fip->event_tag);
5904                 break;
5905         }
5906 }
5907
5908 /**
5909  * lpfc_sli4_async_dcbx_evt - Process the asynchronous dcbx event
5910  * @phba: pointer to lpfc hba data structure.
5911  * @acqe_dcbx: pointer to the async dcbx completion queue entry.
5912  *
5913  * This routine is to handle the SLI4 asynchronous dcbx event.
5914  **/
5915 static void
5916 lpfc_sli4_async_dcbx_evt(struct lpfc_hba *phba,
5917                          struct lpfc_acqe_dcbx *acqe_dcbx)
5918 {
5919         phba->fc_eventTag = acqe_dcbx->event_tag;
5920         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5921                         "0290 The SLI4 DCBX asynchronous event is not "
5922                         "handled yet\n");
5923 }
5924
5925 /**
5926  * lpfc_sli4_async_grp5_evt - Process the asynchronous group5 event
5927  * @phba: pointer to lpfc hba data structure.
5928  * @acqe_grp5: pointer to the async grp5 completion queue entry.
5929  *
5930  * This routine is to handle the SLI4 asynchronous grp5 event. A grp5 event
5931  * is an asynchronous notified of a logical link speed change.  The Port
5932  * reports the logical link speed in units of 10Mbps.
5933  **/
5934 static void
5935 lpfc_sli4_async_grp5_evt(struct lpfc_hba *phba,
5936                          struct lpfc_acqe_grp5 *acqe_grp5)
5937 {
5938         uint16_t prev_ll_spd;
5939
5940         phba->fc_eventTag = acqe_grp5->event_tag;
5941         phba->fcoe_eventtag = acqe_grp5->event_tag;
5942         prev_ll_spd = phba->sli4_hba.link_state.logical_speed;
5943         phba->sli4_hba.link_state.logical_speed =
5944                 (bf_get(lpfc_acqe_grp5_llink_spd, acqe_grp5)) * 10;
5945         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5946                         "2789 GRP5 Async Event: Updating logical link speed "
5947                         "from %dMbps to %dMbps\n", prev_ll_spd,
5948                         phba->sli4_hba.link_state.logical_speed);
5949 }
5950
5951 /**
5952  * lpfc_sli4_async_event_proc - Process all the pending asynchronous event
5953  * @phba: pointer to lpfc hba data structure.
5954  *
5955  * This routine is invoked by the worker thread to process all the pending
5956  * SLI4 asynchronous events.
5957  **/
5958 void lpfc_sli4_async_event_proc(struct lpfc_hba *phba)
5959 {
5960         struct lpfc_cq_event *cq_event;
5961         unsigned long iflags;
5962
5963         /* First, declare the async event has been handled */
5964         spin_lock_irqsave(&phba->hbalock, iflags);
5965         phba->hba_flag &= ~ASYNC_EVENT;
5966         spin_unlock_irqrestore(&phba->hbalock, iflags);
5967
5968         /* Now, handle all the async events */
5969         spin_lock_irqsave(&phba->sli4_hba.asynce_list_lock, iflags);
5970         while (!list_empty(&phba->sli4_hba.sp_asynce_work_queue)) {
5971                 list_remove_head(&phba->sli4_hba.sp_asynce_work_queue,
5972                                  cq_event, struct lpfc_cq_event, list);
5973                 spin_unlock_irqrestore(&phba->sli4_hba.asynce_list_lock,
5974                                        iflags);
5975
5976                 /* Process the asynchronous event */
5977                 switch (bf_get(lpfc_trailer_code, &cq_event->cqe.mcqe_cmpl)) {
5978                 case LPFC_TRAILER_CODE_LINK:
5979                         lpfc_sli4_async_link_evt(phba,
5980                                                  &cq_event->cqe.acqe_link);
5981                         break;
5982                 case LPFC_TRAILER_CODE_FCOE:
5983                         lpfc_sli4_async_fip_evt(phba, &cq_event->cqe.acqe_fip);
5984                         break;
5985                 case LPFC_TRAILER_CODE_DCBX:
5986                         lpfc_sli4_async_dcbx_evt(phba,
5987                                                  &cq_event->cqe.acqe_dcbx);
5988                         break;
5989                 case LPFC_TRAILER_CODE_GRP5:
5990                         lpfc_sli4_async_grp5_evt(phba,
5991                                                  &cq_event->cqe.acqe_grp5);
5992                         break;
5993                 case LPFC_TRAILER_CODE_FC:
5994                         lpfc_sli4_async_fc_evt(phba, &cq_event->cqe.acqe_fc);
5995                         break;
5996                 case LPFC_TRAILER_CODE_SLI:
5997                         lpfc_sli4_async_sli_evt(phba, &cq_event->cqe.acqe_sli);
5998                         break;
5999                 default:
6000                         lpfc_printf_log(phba, KERN_ERR,
6001                                         LOG_TRACE_EVENT,
6002                                         "1804 Invalid asynchronous event code: "
6003                                         "x%x\n", bf_get(lpfc_trailer_code,
6004                                         &cq_event->cqe.mcqe_cmpl));
6005                         break;
6006                 }
6007
6008                 /* Free the completion event processed to the free pool */
6009                 lpfc_sli4_cq_event_release(phba, cq_event);
6010                 spin_lock_irqsave(&phba->sli4_hba.asynce_list_lock, iflags);
6011         }
6012         spin_unlock_irqrestore(&phba->sli4_hba.asynce_list_lock, iflags);
6013 }
6014
6015 /**
6016  * lpfc_sli4_fcf_redisc_event_proc - Process fcf table rediscovery event
6017  * @phba: pointer to lpfc hba data structure.
6018  *
6019  * This routine is invoked by the worker thread to process FCF table
6020  * rediscovery pending completion event.
6021  **/
6022 void lpfc_sli4_fcf_redisc_event_proc(struct lpfc_hba *phba)
6023 {
6024         int rc;
6025
6026         spin_lock_irq(&phba->hbalock);
6027         /* Clear FCF rediscovery timeout event */
6028         phba->fcf.fcf_flag &= ~FCF_REDISC_EVT;
6029         /* Clear driver fast failover FCF record flag */
6030         phba->fcf.failover_rec.flag = 0;
6031         /* Set state for FCF fast failover */
6032         phba->fcf.fcf_flag |= FCF_REDISC_FOV;
6033         spin_unlock_irq(&phba->hbalock);
6034
6035         /* Scan FCF table from the first entry to re-discover SAN */
6036         lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
6037                         "2777 Start post-quiescent FCF table scan\n");
6038         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
6039         if (rc)
6040                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6041                                 "2747 Issue FCF scan read FCF mailbox "
6042                                 "command failed 0x%x\n", rc);
6043 }
6044
6045 /**
6046  * lpfc_api_table_setup - Set up per hba pci-device group func api jump table
6047  * @phba: pointer to lpfc hba data structure.
6048  * @dev_grp: The HBA PCI-Device group number.
6049  *
6050  * This routine is invoked to set up the per HBA PCI-Device group function
6051  * API jump table entries.
6052  *
6053  * Return: 0 if success, otherwise -ENODEV
6054  **/
6055 int
6056 lpfc_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
6057 {
6058         int rc;
6059
6060         /* Set up lpfc PCI-device group */
6061         phba->pci_dev_grp = dev_grp;
6062
6063         /* The LPFC_PCI_DEV_OC uses SLI4 */
6064         if (dev_grp == LPFC_PCI_DEV_OC)
6065                 phba->sli_rev = LPFC_SLI_REV4;
6066
6067         /* Set up device INIT API function jump table */
6068         rc = lpfc_init_api_table_setup(phba, dev_grp);
6069         if (rc)
6070                 return -ENODEV;
6071         /* Set up SCSI API function jump table */
6072         rc = lpfc_scsi_api_table_setup(phba, dev_grp);
6073         if (rc)
6074                 return -ENODEV;
6075         /* Set up SLI API function jump table */
6076         rc = lpfc_sli_api_table_setup(phba, dev_grp);
6077         if (rc)
6078                 return -ENODEV;
6079         /* Set up MBOX API function jump table */
6080         rc = lpfc_mbox_api_table_setup(phba, dev_grp);
6081         if (rc)
6082                 return -ENODEV;
6083
6084         return 0;
6085 }
6086
6087 /**
6088  * lpfc_log_intr_mode - Log the active interrupt mode
6089  * @phba: pointer to lpfc hba data structure.
6090  * @intr_mode: active interrupt mode adopted.
6091  *
6092  * This routine it invoked to log the currently used active interrupt mode
6093  * to the device.
6094  **/
6095 static void lpfc_log_intr_mode(struct lpfc_hba *phba, uint32_t intr_mode)
6096 {
6097         switch (intr_mode) {
6098         case 0:
6099                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6100                                 "0470 Enable INTx interrupt mode.\n");
6101                 break;
6102         case 1:
6103                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6104                                 "0481 Enabled MSI interrupt mode.\n");
6105                 break;
6106         case 2:
6107                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6108                                 "0480 Enabled MSI-X interrupt mode.\n");
6109                 break;
6110         default:
6111                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6112                                 "0482 Illegal interrupt mode.\n");
6113                 break;
6114         }
6115         return;
6116 }
6117
6118 /**
6119  * lpfc_enable_pci_dev - Enable a generic PCI device.
6120  * @phba: pointer to lpfc hba data structure.
6121  *
6122  * This routine is invoked to enable the PCI device that is common to all
6123  * PCI devices.
6124  *
6125  * Return codes
6126  *      0 - successful
6127  *      other values - error
6128  **/
6129 static int
6130 lpfc_enable_pci_dev(struct lpfc_hba *phba)
6131 {
6132         struct pci_dev *pdev;
6133
6134         /* Obtain PCI device reference */
6135         if (!phba->pcidev)
6136                 goto out_error;
6137         else
6138                 pdev = phba->pcidev;
6139         /* Enable PCI device */
6140         if (pci_enable_device_mem(pdev))
6141                 goto out_error;
6142         /* Request PCI resource for the device */
6143         if (pci_request_mem_regions(pdev, LPFC_DRIVER_NAME))
6144                 goto out_disable_device;
6145         /* Set up device as PCI master and save state for EEH */
6146         pci_set_master(pdev);
6147         pci_try_set_mwi(pdev);
6148         pci_save_state(pdev);
6149
6150         /* PCIe EEH recovery on powerpc platforms needs fundamental reset */
6151         if (pci_is_pcie(pdev))
6152                 pdev->needs_freset = 1;
6153
6154         return 0;
6155
6156 out_disable_device:
6157         pci_disable_device(pdev);
6158 out_error:
6159         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6160                         "1401 Failed to enable pci device\n");
6161         return -ENODEV;
6162 }
6163
6164 /**
6165  * lpfc_disable_pci_dev - Disable a generic PCI device.
6166  * @phba: pointer to lpfc hba data structure.
6167  *
6168  * This routine is invoked to disable the PCI device that is common to all
6169  * PCI devices.
6170  **/
6171 static void
6172 lpfc_disable_pci_dev(struct lpfc_hba *phba)
6173 {
6174         struct pci_dev *pdev;
6175
6176         /* Obtain PCI device reference */
6177         if (!phba->pcidev)
6178                 return;
6179         else
6180                 pdev = phba->pcidev;
6181         /* Release PCI resource and disable PCI device */
6182         pci_release_mem_regions(pdev);
6183         pci_disable_device(pdev);
6184
6185         return;
6186 }
6187
6188 /**
6189  * lpfc_reset_hba - Reset a hba
6190  * @phba: pointer to lpfc hba data structure.
6191  *
6192  * This routine is invoked to reset a hba device. It brings the HBA
6193  * offline, performs a board restart, and then brings the board back
6194  * online. The lpfc_offline calls lpfc_sli_hba_down which will clean up
6195  * on outstanding mailbox commands.
6196  **/
6197 void
6198 lpfc_reset_hba(struct lpfc_hba *phba)
6199 {
6200         /* If resets are disabled then set error state and return. */
6201         if (!phba->cfg_enable_hba_reset) {
6202                 phba->link_state = LPFC_HBA_ERROR;
6203                 return;
6204         }
6205         if (phba->sli.sli_flag & LPFC_SLI_ACTIVE)
6206                 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
6207         else
6208                 lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
6209         lpfc_offline(phba);
6210         lpfc_sli_brdrestart(phba);
6211         lpfc_online(phba);
6212         lpfc_unblock_mgmt_io(phba);
6213 }
6214
6215 /**
6216  * lpfc_sli_sriov_nr_virtfn_get - Get the number of sr-iov virtual functions
6217  * @phba: pointer to lpfc hba data structure.
6218  *
6219  * This function enables the PCI SR-IOV virtual functions to a physical
6220  * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to
6221  * enable the number of virtual functions to the physical function. As
6222  * not all devices support SR-IOV, the return code from the pci_enable_sriov()
6223  * API call does not considered as an error condition for most of the device.
6224  **/
6225 uint16_t
6226 lpfc_sli_sriov_nr_virtfn_get(struct lpfc_hba *phba)
6227 {
6228         struct pci_dev *pdev = phba->pcidev;
6229         uint16_t nr_virtfn;
6230         int pos;
6231
6232         pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
6233         if (pos == 0)
6234                 return 0;
6235
6236         pci_read_config_word(pdev, pos + PCI_SRIOV_TOTAL_VF, &nr_virtfn);
6237         return nr_virtfn;
6238 }
6239
6240 /**
6241  * lpfc_sli_probe_sriov_nr_virtfn - Enable a number of sr-iov virtual functions
6242  * @phba: pointer to lpfc hba data structure.
6243  * @nr_vfn: number of virtual functions to be enabled.
6244  *
6245  * This function enables the PCI SR-IOV virtual functions to a physical
6246  * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to
6247  * enable the number of virtual functions to the physical function. As
6248  * not all devices support SR-IOV, the return code from the pci_enable_sriov()
6249  * API call does not considered as an error condition for most of the device.
6250  **/
6251 int
6252 lpfc_sli_probe_sriov_nr_virtfn(struct lpfc_hba *phba, int nr_vfn)
6253 {
6254         struct pci_dev *pdev = phba->pcidev;
6255         uint16_t max_nr_vfn;
6256         int rc;
6257
6258         max_nr_vfn = lpfc_sli_sriov_nr_virtfn_get(phba);
6259         if (nr_vfn > max_nr_vfn) {
6260                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6261                                 "3057 Requested vfs (%d) greater than "
6262                                 "supported vfs (%d)", nr_vfn, max_nr_vfn);
6263                 return -EINVAL;
6264         }
6265
6266         rc = pci_enable_sriov(pdev, nr_vfn);
6267         if (rc) {
6268                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6269                                 "2806 Failed to enable sriov on this device "
6270                                 "with vfn number nr_vf:%d, rc:%d\n",
6271                                 nr_vfn, rc);
6272         } else
6273                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6274                                 "2807 Successful enable sriov on this device "
6275                                 "with vfn number nr_vf:%d\n", nr_vfn);
6276         return rc;
6277 }
6278
6279 /**
6280  * lpfc_setup_driver_resource_phase1 - Phase1 etup driver internal resources.
6281  * @phba: pointer to lpfc hba data structure.
6282  *
6283  * This routine is invoked to set up the driver internal resources before the
6284  * device specific resource setup to support the HBA device it attached to.
6285  *
6286  * Return codes
6287  *      0 - successful
6288  *      other values - error
6289  **/
6290 static int
6291 lpfc_setup_driver_resource_phase1(struct lpfc_hba *phba)
6292 {
6293         struct lpfc_sli *psli = &phba->sli;
6294
6295         /*
6296          * Driver resources common to all SLI revisions
6297          */
6298         atomic_set(&phba->fast_event_count, 0);
6299         atomic_set(&phba->dbg_log_idx, 0);
6300         atomic_set(&phba->dbg_log_cnt, 0);
6301         atomic_set(&phba->dbg_log_dmping, 0);
6302         spin_lock_init(&phba->hbalock);
6303
6304         /* Initialize ndlp management spinlock */
6305         spin_lock_init(&phba->ndlp_lock);
6306
6307         /* Initialize port_list spinlock */
6308         spin_lock_init(&phba->port_list_lock);
6309         INIT_LIST_HEAD(&phba->port_list);
6310
6311         INIT_LIST_HEAD(&phba->work_list);
6312         init_waitqueue_head(&phba->wait_4_mlo_m_q);
6313
6314         /* Initialize the wait queue head for the kernel thread */
6315         init_waitqueue_head(&phba->work_waitq);
6316
6317         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6318                         "1403 Protocols supported %s %s %s\n",
6319                         ((phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) ?
6320                                 "SCSI" : " "),
6321                         ((phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) ?
6322                                 "NVME" : " "),
6323                         (phba->nvmet_support ? "NVMET" : " "));
6324
6325         /* Initialize the IO buffer list used by driver for SLI3 SCSI */
6326         spin_lock_init(&phba->scsi_buf_list_get_lock);
6327         INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_get);
6328         spin_lock_init(&phba->scsi_buf_list_put_lock);
6329         INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put);
6330
6331         /* Initialize the fabric iocb list */
6332         INIT_LIST_HEAD(&phba->fabric_iocb_list);
6333
6334         /* Initialize list to save ELS buffers */
6335         INIT_LIST_HEAD(&phba->elsbuf);
6336
6337         /* Initialize FCF connection rec list */
6338         INIT_LIST_HEAD(&phba->fcf_conn_rec_list);
6339
6340         /* Initialize OAS configuration list */
6341         spin_lock_init(&phba->devicelock);
6342         INIT_LIST_HEAD(&phba->luns);
6343
6344         /* MBOX heartbeat timer */
6345         timer_setup(&psli->mbox_tmo, lpfc_mbox_timeout, 0);
6346         /* Fabric block timer */
6347         timer_setup(&phba->fabric_block_timer, lpfc_fabric_block_timeout, 0);
6348         /* EA polling mode timer */
6349         timer_setup(&phba->eratt_poll, lpfc_poll_eratt, 0);
6350         /* Heartbeat timer */
6351         timer_setup(&phba->hb_tmofunc, lpfc_hb_timeout, 0);
6352
6353         INIT_DELAYED_WORK(&phba->eq_delay_work, lpfc_hb_eq_delay_work);
6354
6355         INIT_DELAYED_WORK(&phba->idle_stat_delay_work,
6356                           lpfc_idle_stat_delay_work);
6357
6358         return 0;
6359 }
6360
6361 /**
6362  * lpfc_sli_driver_resource_setup - Setup driver internal resources for SLI3 dev
6363  * @phba: pointer to lpfc hba data structure.
6364  *
6365  * This routine is invoked to set up the driver internal resources specific to
6366  * support the SLI-3 HBA device it attached to.
6367  *
6368  * Return codes
6369  * 0 - successful
6370  * other values - error
6371  **/
6372 static int
6373 lpfc_sli_driver_resource_setup(struct lpfc_hba *phba)
6374 {
6375         int rc, entry_sz;
6376
6377         /*
6378          * Initialize timers used by driver
6379          */
6380
6381         /* FCP polling mode timer */
6382         timer_setup(&phba->fcp_poll_timer, lpfc_poll_timeout, 0);
6383
6384         /* Host attention work mask setup */
6385         phba->work_ha_mask = (HA_ERATT | HA_MBATT | HA_LATT);
6386         phba->work_ha_mask |= (HA_RXMASK << (LPFC_ELS_RING * 4));
6387
6388         /* Get all the module params for configuring this host */
6389         lpfc_get_cfgparam(phba);
6390         /* Set up phase-1 common device driver resources */
6391
6392         rc = lpfc_setup_driver_resource_phase1(phba);
6393         if (rc)
6394                 return -ENODEV;
6395
6396         if (phba->pcidev->device == PCI_DEVICE_ID_HORNET) {
6397                 phba->menlo_flag |= HBA_MENLO_SUPPORT;
6398                 /* check for menlo minimum sg count */
6399                 if (phba->cfg_sg_seg_cnt < LPFC_DEFAULT_MENLO_SG_SEG_CNT)
6400                         phba->cfg_sg_seg_cnt = LPFC_DEFAULT_MENLO_SG_SEG_CNT;
6401         }
6402
6403         if (!phba->sli.sli3_ring)
6404                 phba->sli.sli3_ring = kcalloc(LPFC_SLI3_MAX_RING,
6405                                               sizeof(struct lpfc_sli_ring),
6406                                               GFP_KERNEL);
6407         if (!phba->sli.sli3_ring)
6408                 return -ENOMEM;
6409
6410         /*
6411          * Since lpfc_sg_seg_cnt is module parameter, the sg_dma_buf_size
6412          * used to create the sg_dma_buf_pool must be dynamically calculated.
6413          */
6414
6415         if (phba->sli_rev == LPFC_SLI_REV4)
6416                 entry_sz = sizeof(struct sli4_sge);
6417         else
6418                 entry_sz = sizeof(struct ulp_bde64);
6419
6420         /* There are going to be 2 reserved BDEs: 1 FCP cmnd + 1 FCP rsp */
6421         if (phba->cfg_enable_bg) {
6422                 /*
6423                  * The scsi_buf for a T10-DIF I/O will hold the FCP cmnd,
6424                  * the FCP rsp, and a BDE for each. Sice we have no control
6425                  * over how many protection data segments the SCSI Layer
6426                  * will hand us (ie: there could be one for every block
6427                  * in the IO), we just allocate enough BDEs to accomidate
6428                  * our max amount and we need to limit lpfc_sg_seg_cnt to
6429                  * minimize the risk of running out.
6430                  */
6431                 phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
6432                         sizeof(struct fcp_rsp) +
6433                         (LPFC_MAX_SG_SEG_CNT * entry_sz);
6434
6435                 if (phba->cfg_sg_seg_cnt > LPFC_MAX_SG_SEG_CNT_DIF)
6436                         phba->cfg_sg_seg_cnt = LPFC_MAX_SG_SEG_CNT_DIF;
6437
6438                 /* Total BDEs in BPL for scsi_sg_list and scsi_sg_prot_list */
6439                 phba->cfg_total_seg_cnt = LPFC_MAX_SG_SEG_CNT;
6440         } else {
6441                 /*
6442                  * The scsi_buf for a regular I/O will hold the FCP cmnd,
6443                  * the FCP rsp, a BDE for each, and a BDE for up to
6444                  * cfg_sg_seg_cnt data segments.
6445                  */
6446                 phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
6447                         sizeof(struct fcp_rsp) +
6448                         ((phba->cfg_sg_seg_cnt + 2) * entry_sz);
6449
6450                 /* Total BDEs in BPL for scsi_sg_list */
6451                 phba->cfg_total_seg_cnt = phba->cfg_sg_seg_cnt + 2;
6452         }
6453
6454         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,
6455                         "9088 INIT sg_tablesize:%d dmabuf_size:%d total_bde:%d\n",
6456                         phba->cfg_sg_seg_cnt, phba->cfg_sg_dma_buf_size,
6457                         phba->cfg_total_seg_cnt);
6458
6459         phba->max_vpi = LPFC_MAX_VPI;
6460         /* This will be set to correct value after config_port mbox */
6461         phba->max_vports = 0;
6462
6463         /*
6464          * Initialize the SLI Layer to run with lpfc HBAs.
6465          */
6466         lpfc_sli_setup(phba);
6467         lpfc_sli_queue_init(phba);
6468
6469         /* Allocate device driver memory */
6470         if (lpfc_mem_alloc(phba, BPL_ALIGN_SZ))
6471                 return -ENOMEM;
6472
6473         phba->lpfc_sg_dma_buf_pool =
6474                 dma_pool_create("lpfc_sg_dma_buf_pool",
6475                                 &phba->pcidev->dev, phba->cfg_sg_dma_buf_size,
6476                                 BPL_ALIGN_SZ, 0);
6477
6478         if (!phba->lpfc_sg_dma_buf_pool)
6479                 goto fail_free_mem;
6480
6481         phba->lpfc_cmd_rsp_buf_pool =
6482                         dma_pool_create("lpfc_cmd_rsp_buf_pool",
6483                                         &phba->pcidev->dev,
6484                                         sizeof(struct fcp_cmnd) +
6485                                         sizeof(struct fcp_rsp),
6486                                         BPL_ALIGN_SZ, 0);
6487
6488         if (!phba->lpfc_cmd_rsp_buf_pool)
6489                 goto fail_free_dma_buf_pool;
6490
6491         /*
6492          * Enable sr-iov virtual functions if supported and configured
6493          * through the module parameter.
6494          */
6495         if (phba->cfg_sriov_nr_virtfn > 0) {
6496                 rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
6497                                                  phba->cfg_sriov_nr_virtfn);
6498                 if (rc) {
6499                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6500                                         "2808 Requested number of SR-IOV "
6501                                         "virtual functions (%d) is not "
6502                                         "supported\n",
6503                                         phba->cfg_sriov_nr_virtfn);
6504                         phba->cfg_sriov_nr_virtfn = 0;
6505                 }
6506         }
6507
6508         return 0;
6509
6510 fail_free_dma_buf_pool:
6511         dma_pool_destroy(phba->lpfc_sg_dma_buf_pool);
6512         phba->lpfc_sg_dma_buf_pool = NULL;
6513 fail_free_mem:
6514         lpfc_mem_free(phba);
6515         return -ENOMEM;
6516 }
6517
6518 /**
6519  * lpfc_sli_driver_resource_unset - Unset drvr internal resources for SLI3 dev
6520  * @phba: pointer to lpfc hba data structure.
6521  *
6522  * This routine is invoked to unset the driver internal resources set up
6523  * specific for supporting the SLI-3 HBA device it attached to.
6524  **/
6525 static void
6526 lpfc_sli_driver_resource_unset(struct lpfc_hba *phba)
6527 {
6528         /* Free device driver memory allocated */
6529         lpfc_mem_free_all(phba);
6530
6531         return;
6532 }
6533
6534 /**
6535  * lpfc_sli4_driver_resource_setup - Setup drvr internal resources for SLI4 dev
6536  * @phba: pointer to lpfc hba data structure.
6537  *
6538  * This routine is invoked to set up the driver internal resources specific to
6539  * support the SLI-4 HBA device it attached to.
6540  *
6541  * Return codes
6542  *      0 - successful
6543  *      other values - error
6544  **/
6545 static int
6546 lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
6547 {
6548         LPFC_MBOXQ_t *mboxq;
6549         MAILBOX_t *mb;
6550         int rc, i, max_buf_size;
6551         int longs;
6552         int extra;
6553         uint64_t wwn;
6554         u32 if_type;
6555         u32 if_fam;
6556
6557         phba->sli4_hba.num_present_cpu = lpfc_present_cpu;
6558         phba->sli4_hba.num_possible_cpu = cpumask_last(cpu_possible_mask) + 1;
6559         phba->sli4_hba.curr_disp_cpu = 0;
6560
6561         /* Get all the module params for configuring this host */
6562         lpfc_get_cfgparam(phba);
6563
6564         /* Set up phase-1 common device driver resources */
6565         rc = lpfc_setup_driver_resource_phase1(phba);
6566         if (rc)
6567                 return -ENODEV;
6568
6569         /* Before proceed, wait for POST done and device ready */
6570         rc = lpfc_sli4_post_status_check(phba);
6571         if (rc)
6572                 return -ENODEV;
6573
6574         /* Allocate all driver workqueues here */
6575
6576         /* The lpfc_wq workqueue for deferred irq use */
6577         phba->wq = alloc_workqueue("lpfc_wq", WQ_MEM_RECLAIM, 0);
6578
6579         /*
6580          * Initialize timers used by driver
6581          */
6582
6583         timer_setup(&phba->rrq_tmr, lpfc_rrq_timeout, 0);
6584
6585         /* FCF rediscover timer */
6586         timer_setup(&phba->fcf.redisc_wait, lpfc_sli4_fcf_redisc_wait_tmo, 0);
6587
6588         /*
6589          * Control structure for handling external multi-buffer mailbox
6590          * command pass-through.
6591          */
6592         memset((uint8_t *)&phba->mbox_ext_buf_ctx, 0,
6593                 sizeof(struct lpfc_mbox_ext_buf_ctx));
6594         INIT_LIST_HEAD(&phba->mbox_ext_buf_ctx.ext_dmabuf_list);
6595
6596         phba->max_vpi = LPFC_MAX_VPI;
6597
6598         /* This will be set to correct value after the read_config mbox */
6599         phba->max_vports = 0;
6600
6601         /* Program the default value of vlan_id and fc_map */
6602         phba->valid_vlan = 0;
6603         phba->fc_map[0] = LPFC_FCOE_FCF_MAP0;
6604         phba->fc_map[1] = LPFC_FCOE_FCF_MAP1;
6605         phba->fc_map[2] = LPFC_FCOE_FCF_MAP2;
6606
6607         /*
6608          * For SLI4, instead of using ring 0 (LPFC_FCP_RING) for FCP commands
6609          * we will associate a new ring, for each EQ/CQ/WQ tuple.
6610          * The WQ create will allocate the ring.
6611          */
6612
6613         /* Initialize buffer queue management fields */
6614         INIT_LIST_HEAD(&phba->hbqs[LPFC_ELS_HBQ].hbq_buffer_list);
6615         phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_sli4_rb_alloc;
6616         phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_sli4_rb_free;
6617
6618         /*
6619          * Initialize the SLI Layer to run with lpfc SLI4 HBAs.
6620          */
6621         /* Initialize the Abort buffer list used by driver */
6622         spin_lock_init(&phba->sli4_hba.abts_io_buf_list_lock);
6623         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_io_buf_list);
6624
6625         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
6626                 /* Initialize the Abort nvme buffer list used by driver */
6627                 spin_lock_init(&phba->sli4_hba.abts_nvmet_buf_list_lock);
6628                 INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
6629                 INIT_LIST_HEAD(&phba->sli4_hba.lpfc_nvmet_io_wait_list);
6630                 spin_lock_init(&phba->sli4_hba.t_active_list_lock);
6631                 INIT_LIST_HEAD(&phba->sli4_hba.t_active_ctx_list);
6632         }
6633
6634         /* This abort list used by worker thread */
6635         spin_lock_init(&phba->sli4_hba.sgl_list_lock);
6636         spin_lock_init(&phba->sli4_hba.nvmet_io_wait_lock);
6637         spin_lock_init(&phba->sli4_hba.asynce_list_lock);
6638         spin_lock_init(&phba->sli4_hba.els_xri_abrt_list_lock);
6639
6640         /*
6641          * Initialize driver internal slow-path work queues
6642          */
6643
6644         /* Driver internel slow-path CQ Event pool */
6645         INIT_LIST_HEAD(&phba->sli4_hba.sp_cqe_event_pool);
6646         /* Response IOCB work queue list */
6647         INIT_LIST_HEAD(&phba->sli4_hba.sp_queue_event);
6648         /* Asynchronous event CQ Event work queue list */
6649         INIT_LIST_HEAD(&phba->sli4_hba.sp_asynce_work_queue);
6650         /* Slow-path XRI aborted CQ Event work queue list */
6651         INIT_LIST_HEAD(&phba->sli4_hba.sp_els_xri_aborted_work_queue);
6652         /* Receive queue CQ Event work queue list */
6653         INIT_LIST_HEAD(&phba->sli4_hba.sp_unsol_work_queue);
6654
6655         /* Initialize extent block lists. */
6656         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_blk_list);
6657         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_xri_blk_list);
6658         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_vfi_blk_list);
6659         INIT_LIST_HEAD(&phba->lpfc_vpi_blk_list);
6660
6661         /* Initialize mboxq lists. If the early init routines fail
6662          * these lists need to be correctly initialized.
6663          */
6664         INIT_LIST_HEAD(&phba->sli.mboxq);
6665         INIT_LIST_HEAD(&phba->sli.mboxq_cmpl);
6666
6667         /* initialize optic_state to 0xFF */
6668         phba->sli4_hba.lnk_info.optic_state = 0xff;
6669
6670         /* Allocate device driver memory */
6671         rc = lpfc_mem_alloc(phba, SGL_ALIGN_SZ);
6672         if (rc)
6673                 goto out_destroy_workqueue;
6674
6675         /* IF Type 2 ports get initialized now. */
6676         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
6677             LPFC_SLI_INTF_IF_TYPE_2) {
6678                 rc = lpfc_pci_function_reset(phba);
6679                 if (unlikely(rc)) {
6680                         rc = -ENODEV;
6681                         goto out_free_mem;
6682                 }
6683                 phba->temp_sensor_support = 1;
6684         }
6685
6686         /* Create the bootstrap mailbox command */
6687         rc = lpfc_create_bootstrap_mbox(phba);
6688         if (unlikely(rc))
6689                 goto out_free_mem;
6690
6691         /* Set up the host's endian order with the device. */
6692         rc = lpfc_setup_endian_order(phba);
6693         if (unlikely(rc))
6694                 goto out_free_bsmbx;
6695
6696         /* Set up the hba's configuration parameters. */
6697         rc = lpfc_sli4_read_config(phba);
6698         if (unlikely(rc))
6699                 goto out_free_bsmbx;
6700         rc = lpfc_mem_alloc_active_rrq_pool_s4(phba);
6701         if (unlikely(rc))
6702                 goto out_free_bsmbx;
6703
6704         /* IF Type 0 ports get initialized now. */
6705         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
6706             LPFC_SLI_INTF_IF_TYPE_0) {
6707                 rc = lpfc_pci_function_reset(phba);
6708                 if (unlikely(rc))
6709                         goto out_free_bsmbx;
6710         }
6711
6712         mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
6713                                                        GFP_KERNEL);
6714         if (!mboxq) {
6715                 rc = -ENOMEM;
6716                 goto out_free_bsmbx;
6717         }
6718
6719         /* Check for NVMET being configured */
6720         phba->nvmet_support = 0;
6721         if (lpfc_enable_nvmet_cnt) {
6722
6723                 /* First get WWN of HBA instance */
6724                 lpfc_read_nv(phba, mboxq);
6725                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
6726                 if (rc != MBX_SUCCESS) {
6727                         lpfc_printf_log(phba, KERN_ERR,
6728                                         LOG_TRACE_EVENT,
6729                                         "6016 Mailbox failed , mbxCmd x%x "
6730                                         "READ_NV, mbxStatus x%x\n",
6731                                         bf_get(lpfc_mqe_command, &mboxq->u.mqe),
6732                                         bf_get(lpfc_mqe_status, &mboxq->u.mqe));
6733                         mempool_free(mboxq, phba->mbox_mem_pool);
6734                         rc = -EIO;
6735                         goto out_free_bsmbx;
6736                 }
6737                 mb = &mboxq->u.mb;
6738                 memcpy(&wwn, (char *)mb->un.varRDnvp.nodename,
6739                        sizeof(uint64_t));
6740                 wwn = cpu_to_be64(wwn);
6741                 phba->sli4_hba.wwnn.u.name = wwn;
6742                 memcpy(&wwn, (char *)mb->un.varRDnvp.portname,
6743                        sizeof(uint64_t));
6744                 /* wwn is WWPN of HBA instance */
6745                 wwn = cpu_to_be64(wwn);
6746                 phba->sli4_hba.wwpn.u.name = wwn;
6747
6748                 /* Check to see if it matches any module parameter */
6749                 for (i = 0; i < lpfc_enable_nvmet_cnt; i++) {
6750                         if (wwn == lpfc_enable_nvmet[i]) {
6751 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
6752                                 if (lpfc_nvmet_mem_alloc(phba))
6753                                         break;
6754
6755                                 phba->nvmet_support = 1; /* a match */
6756
6757                                 lpfc_printf_log(phba, KERN_ERR,
6758                                                 LOG_TRACE_EVENT,
6759                                                 "6017 NVME Target %016llx\n",
6760                                                 wwn);
6761 #else
6762                                 lpfc_printf_log(phba, KERN_ERR,
6763                                                 LOG_TRACE_EVENT,
6764                                                 "6021 Can't enable NVME Target."
6765                                                 " NVME_TARGET_FC infrastructure"
6766                                                 " is not in kernel\n");
6767 #endif
6768                                 /* Not supported for NVMET */
6769                                 phba->cfg_xri_rebalancing = 0;
6770                                 if (phba->irq_chann_mode == NHT_MODE) {
6771                                         phba->cfg_irq_chann =
6772                                                 phba->sli4_hba.num_present_cpu;
6773                                         phba->cfg_hdw_queue =
6774                                                 phba->sli4_hba.num_present_cpu;
6775                                         phba->irq_chann_mode = NORMAL_MODE;
6776                                 }
6777                                 break;
6778                         }
6779                 }
6780         }
6781
6782         lpfc_nvme_mod_param_dep(phba);
6783
6784         /*
6785          * Get sli4 parameters that override parameters from Port capabilities.
6786          * If this call fails, it isn't critical unless the SLI4 parameters come
6787          * back in conflict.
6788          */
6789         rc = lpfc_get_sli4_parameters(phba, mboxq);
6790         if (rc) {
6791                 if_type = bf_get(lpfc_sli_intf_if_type,
6792                                  &phba->sli4_hba.sli_intf);
6793                 if_fam = bf_get(lpfc_sli_intf_sli_family,
6794                                 &phba->sli4_hba.sli_intf);
6795                 if (phba->sli4_hba.extents_in_use &&
6796                     phba->sli4_hba.rpi_hdrs_in_use) {
6797                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6798                                         "2999 Unsupported SLI4 Parameters "
6799                                         "Extents and RPI headers enabled.\n");
6800                         if (if_type == LPFC_SLI_INTF_IF_TYPE_0 &&
6801                             if_fam ==  LPFC_SLI_INTF_FAMILY_BE2) {
6802                                 mempool_free(mboxq, phba->mbox_mem_pool);
6803                                 rc = -EIO;
6804                                 goto out_free_bsmbx;
6805                         }
6806                 }
6807                 if (!(if_type == LPFC_SLI_INTF_IF_TYPE_0 &&
6808                       if_fam == LPFC_SLI_INTF_FAMILY_BE2)) {
6809                         mempool_free(mboxq, phba->mbox_mem_pool);
6810                         rc = -EIO;
6811                         goto out_free_bsmbx;
6812                 }
6813         }
6814
6815         /*
6816          * 1 for cmd, 1 for rsp, NVME adds an extra one
6817          * for boundary conditions in its max_sgl_segment template.
6818          */
6819         extra = 2;
6820         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
6821                 extra++;
6822
6823         /*
6824          * It doesn't matter what family our adapter is in, we are
6825          * limited to 2 Pages, 512 SGEs, for our SGL.
6826          * There are going to be 2 reserved SGEs: 1 FCP cmnd + 1 FCP rsp
6827          */
6828         max_buf_size = (2 * SLI4_PAGE_SIZE);
6829
6830         /*
6831          * Since lpfc_sg_seg_cnt is module param, the sg_dma_buf_size
6832          * used to create the sg_dma_buf_pool must be calculated.
6833          */
6834         if (phba->sli3_options & LPFC_SLI3_BG_ENABLED) {
6835                 /* Both cfg_enable_bg and cfg_external_dif code paths */
6836
6837                 /*
6838                  * The scsi_buf for a T10-DIF I/O holds the FCP cmnd,
6839                  * the FCP rsp, and a SGE. Sice we have no control
6840                  * over how many protection segments the SCSI Layer
6841                  * will hand us (ie: there could be one for every block
6842                  * in the IO), just allocate enough SGEs to accomidate
6843                  * our max amount and we need to limit lpfc_sg_seg_cnt
6844                  * to minimize the risk of running out.
6845                  */
6846                 phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
6847                                 sizeof(struct fcp_rsp) + max_buf_size;
6848
6849                 /* Total SGEs for scsi_sg_list and scsi_sg_prot_list */
6850                 phba->cfg_total_seg_cnt = LPFC_MAX_SGL_SEG_CNT;
6851
6852                 /*
6853                  * If supporting DIF, reduce the seg count for scsi to
6854                  * allow room for the DIF sges.
6855                  */
6856                 if (phba->cfg_enable_bg &&
6857                     phba->cfg_sg_seg_cnt > LPFC_MAX_BG_SLI4_SEG_CNT_DIF)
6858                         phba->cfg_scsi_seg_cnt = LPFC_MAX_BG_SLI4_SEG_CNT_DIF;
6859                 else
6860                         phba->cfg_scsi_seg_cnt = phba->cfg_sg_seg_cnt;
6861
6862         } else {
6863                 /*
6864                  * The scsi_buf for a regular I/O holds the FCP cmnd,
6865                  * the FCP rsp, a SGE for each, and a SGE for up to
6866                  * cfg_sg_seg_cnt data segments.
6867                  */
6868                 phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
6869                                 sizeof(struct fcp_rsp) +
6870                                 ((phba->cfg_sg_seg_cnt + extra) *
6871                                 sizeof(struct sli4_sge));
6872
6873                 /* Total SGEs for scsi_sg_list */
6874                 phba->cfg_total_seg_cnt = phba->cfg_sg_seg_cnt + extra;
6875                 phba->cfg_scsi_seg_cnt = phba->cfg_sg_seg_cnt;
6876
6877                 /*
6878                  * NOTE: if (phba->cfg_sg_seg_cnt + extra) <= 256 we only
6879                  * need to post 1 page for the SGL.
6880                  */
6881         }
6882
6883         if (phba->cfg_xpsgl && !phba->nvmet_support)
6884                 phba->cfg_sg_dma_buf_size = LPFC_DEFAULT_XPSGL_SIZE;
6885         else if (phba->cfg_sg_dma_buf_size  <= LPFC_MIN_SG_SLI4_BUF_SZ)
6886                 phba->cfg_sg_dma_buf_size = LPFC_MIN_SG_SLI4_BUF_SZ;
6887         else
6888                 phba->cfg_sg_dma_buf_size =
6889                                 SLI4_PAGE_ALIGN(phba->cfg_sg_dma_buf_size);
6890
6891         phba->border_sge_num = phba->cfg_sg_dma_buf_size /
6892                                sizeof(struct sli4_sge);
6893
6894         /* Limit to LPFC_MAX_NVME_SEG_CNT for NVME. */
6895         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
6896                 if (phba->cfg_sg_seg_cnt > LPFC_MAX_NVME_SEG_CNT) {
6897                         lpfc_printf_log(phba, KERN_INFO, LOG_NVME | LOG_INIT,
6898                                         "6300 Reducing NVME sg segment "
6899                                         "cnt to %d\n",
6900                                         LPFC_MAX_NVME_SEG_CNT);
6901                         phba->cfg_nvme_seg_cnt = LPFC_MAX_NVME_SEG_CNT;
6902                 } else
6903                         phba->cfg_nvme_seg_cnt = phba->cfg_sg_seg_cnt;
6904         }
6905
6906         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,
6907                         "9087 sg_seg_cnt:%d dmabuf_size:%d "
6908                         "total:%d scsi:%d nvme:%d\n",
6909                         phba->cfg_sg_seg_cnt, phba->cfg_sg_dma_buf_size,
6910                         phba->cfg_total_seg_cnt,  phba->cfg_scsi_seg_cnt,
6911                         phba->cfg_nvme_seg_cnt);
6912
6913         if (phba->cfg_sg_dma_buf_size < SLI4_PAGE_SIZE)
6914                 i = phba->cfg_sg_dma_buf_size;
6915         else
6916                 i = SLI4_PAGE_SIZE;
6917
6918         phba->lpfc_sg_dma_buf_pool =
6919                         dma_pool_create("lpfc_sg_dma_buf_pool",
6920                                         &phba->pcidev->dev,
6921                                         phba->cfg_sg_dma_buf_size,
6922                                         i, 0);
6923         if (!phba->lpfc_sg_dma_buf_pool)
6924                 goto out_free_bsmbx;
6925
6926         phba->lpfc_cmd_rsp_buf_pool =
6927                         dma_pool_create("lpfc_cmd_rsp_buf_pool",
6928                                         &phba->pcidev->dev,
6929                                         sizeof(struct fcp_cmnd) +
6930                                         sizeof(struct fcp_rsp),
6931                                         i, 0);
6932         if (!phba->lpfc_cmd_rsp_buf_pool)
6933                 goto out_free_sg_dma_buf;
6934
6935         mempool_free(mboxq, phba->mbox_mem_pool);
6936
6937         /* Verify OAS is supported */
6938         lpfc_sli4_oas_verify(phba);
6939
6940         /* Verify RAS support on adapter */
6941         lpfc_sli4_ras_init(phba);
6942
6943         /* Verify all the SLI4 queues */
6944         rc = lpfc_sli4_queue_verify(phba);
6945         if (rc)
6946                 goto out_free_cmd_rsp_buf;
6947
6948         /* Create driver internal CQE event pool */
6949         rc = lpfc_sli4_cq_event_pool_create(phba);
6950         if (rc)
6951                 goto out_free_cmd_rsp_buf;
6952
6953         /* Initialize sgl lists per host */
6954         lpfc_init_sgl_list(phba);
6955
6956         /* Allocate and initialize active sgl array */
6957         rc = lpfc_init_active_sgl_array(phba);
6958         if (rc) {
6959                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6960                                 "1430 Failed to initialize sgl list.\n");
6961                 goto out_destroy_cq_event_pool;
6962         }
6963         rc = lpfc_sli4_init_rpi_hdrs(phba);
6964         if (rc) {
6965                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6966                                 "1432 Failed to initialize rpi headers.\n");
6967                 goto out_free_active_sgl;
6968         }
6969
6970         /* Allocate eligible FCF bmask memory for FCF roundrobin failover */
6971         longs = (LPFC_SLI4_FCF_TBL_INDX_MAX + BITS_PER_LONG - 1)/BITS_PER_LONG;
6972         phba->fcf.fcf_rr_bmask = kcalloc(longs, sizeof(unsigned long),
6973                                          GFP_KERNEL);
6974         if (!phba->fcf.fcf_rr_bmask) {
6975                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6976                                 "2759 Failed allocate memory for FCF round "
6977                                 "robin failover bmask\n");
6978                 rc = -ENOMEM;
6979                 goto out_remove_rpi_hdrs;
6980         }
6981
6982         phba->sli4_hba.hba_eq_hdl = kcalloc(phba->cfg_irq_chann,
6983                                             sizeof(struct lpfc_hba_eq_hdl),
6984                                             GFP_KERNEL);
6985         if (!phba->sli4_hba.hba_eq_hdl) {
6986                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6987                                 "2572 Failed allocate memory for "
6988                                 "fast-path per-EQ handle array\n");
6989                 rc = -ENOMEM;
6990                 goto out_free_fcf_rr_bmask;
6991         }
6992
6993         phba->sli4_hba.cpu_map = kcalloc(phba->sli4_hba.num_possible_cpu,
6994                                         sizeof(struct lpfc_vector_map_info),
6995                                         GFP_KERNEL);
6996         if (!phba->sli4_hba.cpu_map) {
6997                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6998                                 "3327 Failed allocate memory for msi-x "
6999                                 "interrupt vector mapping\n");
7000                 rc = -ENOMEM;
7001                 goto out_free_hba_eq_hdl;
7002         }
7003
7004         phba->sli4_hba.eq_info = alloc_percpu(struct lpfc_eq_intr_info);
7005         if (!phba->sli4_hba.eq_info) {
7006                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7007                                 "3321 Failed allocation for per_cpu stats\n");
7008                 rc = -ENOMEM;
7009                 goto out_free_hba_cpu_map;
7010         }
7011
7012         phba->sli4_hba.idle_stat = kcalloc(phba->sli4_hba.num_possible_cpu,
7013                                            sizeof(*phba->sli4_hba.idle_stat),
7014                                            GFP_KERNEL);
7015         if (!phba->sli4_hba.idle_stat) {
7016                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7017                                 "3390 Failed allocation for idle_stat\n");
7018                 rc = -ENOMEM;
7019                 goto out_free_hba_eq_info;
7020         }
7021
7022 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
7023         phba->sli4_hba.c_stat = alloc_percpu(struct lpfc_hdwq_stat);
7024         if (!phba->sli4_hba.c_stat) {
7025                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7026                                 "3332 Failed allocating per cpu hdwq stats\n");
7027                 rc = -ENOMEM;
7028                 goto out_free_hba_idle_stat;
7029         }
7030 #endif
7031
7032         /*
7033          * Enable sr-iov virtual functions if supported and configured
7034          * through the module parameter.
7035          */
7036         if (phba->cfg_sriov_nr_virtfn > 0) {
7037                 rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
7038                                                  phba->cfg_sriov_nr_virtfn);
7039                 if (rc) {
7040                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7041                                         "3020 Requested number of SR-IOV "
7042                                         "virtual functions (%d) is not "
7043                                         "supported\n",
7044                                         phba->cfg_sriov_nr_virtfn);
7045                         phba->cfg_sriov_nr_virtfn = 0;
7046                 }
7047         }
7048
7049         return 0;
7050
7051 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
7052 out_free_hba_idle_stat:
7053         kfree(phba->sli4_hba.idle_stat);
7054 #endif
7055 out_free_hba_eq_info:
7056         free_percpu(phba->sli4_hba.eq_info);
7057 out_free_hba_cpu_map:
7058         kfree(phba->sli4_hba.cpu_map);
7059 out_free_hba_eq_hdl:
7060         kfree(phba->sli4_hba.hba_eq_hdl);
7061 out_free_fcf_rr_bmask:
7062         kfree(phba->fcf.fcf_rr_bmask);
7063 out_remove_rpi_hdrs:
7064         lpfc_sli4_remove_rpi_hdrs(phba);
7065 out_free_active_sgl:
7066         lpfc_free_active_sgl(phba);
7067 out_destroy_cq_event_pool:
7068         lpfc_sli4_cq_event_pool_destroy(phba);
7069 out_free_cmd_rsp_buf:
7070         dma_pool_destroy(phba->lpfc_cmd_rsp_buf_pool);
7071         phba->lpfc_cmd_rsp_buf_pool = NULL;
7072 out_free_sg_dma_buf:
7073         dma_pool_destroy(phba->lpfc_sg_dma_buf_pool);
7074         phba->lpfc_sg_dma_buf_pool = NULL;
7075 out_free_bsmbx:
7076         lpfc_destroy_bootstrap_mbox(phba);
7077 out_free_mem:
7078         lpfc_mem_free(phba);
7079 out_destroy_workqueue:
7080         destroy_workqueue(phba->wq);
7081         phba->wq = NULL;
7082         return rc;
7083 }
7084
7085 /**
7086  * lpfc_sli4_driver_resource_unset - Unset drvr internal resources for SLI4 dev
7087  * @phba: pointer to lpfc hba data structure.
7088  *
7089  * This routine is invoked to unset the driver internal resources set up
7090  * specific for supporting the SLI-4 HBA device it attached to.
7091  **/
7092 static void
7093 lpfc_sli4_driver_resource_unset(struct lpfc_hba *phba)
7094 {
7095         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
7096
7097         free_percpu(phba->sli4_hba.eq_info);
7098 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
7099         free_percpu(phba->sli4_hba.c_stat);
7100 #endif
7101         kfree(phba->sli4_hba.idle_stat);
7102
7103         /* Free memory allocated for msi-x interrupt vector to CPU mapping */
7104         kfree(phba->sli4_hba.cpu_map);
7105         phba->sli4_hba.num_possible_cpu = 0;
7106         phba->sli4_hba.num_present_cpu = 0;
7107         phba->sli4_hba.curr_disp_cpu = 0;
7108         cpumask_clear(&phba->sli4_hba.irq_aff_mask);
7109
7110         /* Free memory allocated for fast-path work queue handles */
7111         kfree(phba->sli4_hba.hba_eq_hdl);
7112
7113         /* Free the allocated rpi headers. */
7114         lpfc_sli4_remove_rpi_hdrs(phba);
7115         lpfc_sli4_remove_rpis(phba);
7116
7117         /* Free eligible FCF index bmask */
7118         kfree(phba->fcf.fcf_rr_bmask);
7119
7120         /* Free the ELS sgl list */
7121         lpfc_free_active_sgl(phba);
7122         lpfc_free_els_sgl_list(phba);
7123         lpfc_free_nvmet_sgl_list(phba);
7124
7125         /* Free the completion queue EQ event pool */
7126         lpfc_sli4_cq_event_release_all(phba);
7127         lpfc_sli4_cq_event_pool_destroy(phba);
7128
7129         /* Release resource identifiers. */
7130         lpfc_sli4_dealloc_resource_identifiers(phba);
7131
7132         /* Free the bsmbx region. */
7133         lpfc_destroy_bootstrap_mbox(phba);
7134
7135         /* Free the SLI Layer memory with SLI4 HBAs */
7136         lpfc_mem_free_all(phba);
7137
7138         /* Free the current connect table */
7139         list_for_each_entry_safe(conn_entry, next_conn_entry,
7140                 &phba->fcf_conn_rec_list, list) {
7141                 list_del_init(&conn_entry->list);
7142                 kfree(conn_entry);
7143         }
7144
7145         return;
7146 }
7147
7148 /**
7149  * lpfc_init_api_table_setup - Set up init api function jump table
7150  * @phba: The hba struct for which this call is being executed.
7151  * @dev_grp: The HBA PCI-Device group number.
7152  *
7153  * This routine sets up the device INIT interface API function jump table
7154  * in @phba struct.
7155  *
7156  * Returns: 0 - success, -ENODEV - failure.
7157  **/
7158 int
7159 lpfc_init_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
7160 {
7161         phba->lpfc_hba_init_link = lpfc_hba_init_link;
7162         phba->lpfc_hba_down_link = lpfc_hba_down_link;
7163         phba->lpfc_selective_reset = lpfc_selective_reset;
7164         switch (dev_grp) {
7165         case LPFC_PCI_DEV_LP:
7166                 phba->lpfc_hba_down_post = lpfc_hba_down_post_s3;
7167                 phba->lpfc_handle_eratt = lpfc_handle_eratt_s3;
7168                 phba->lpfc_stop_port = lpfc_stop_port_s3;
7169                 break;
7170         case LPFC_PCI_DEV_OC:
7171                 phba->lpfc_hba_down_post = lpfc_hba_down_post_s4;
7172                 phba->lpfc_handle_eratt = lpfc_handle_eratt_s4;
7173                 phba->lpfc_stop_port = lpfc_stop_port_s4;
7174                 break;
7175         default:
7176                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7177                                 "1431 Invalid HBA PCI-device group: 0x%x\n",
7178                                 dev_grp);
7179                 return -ENODEV;
7180                 break;
7181         }
7182         return 0;
7183 }
7184
7185 /**
7186  * lpfc_setup_driver_resource_phase2 - Phase2 setup driver internal resources.
7187  * @phba: pointer to lpfc hba data structure.
7188  *
7189  * This routine is invoked to set up the driver internal resources after the
7190  * device specific resource setup to support the HBA device it attached to.
7191  *
7192  * Return codes
7193  *      0 - successful
7194  *      other values - error
7195  **/
7196 static int
7197 lpfc_setup_driver_resource_phase2(struct lpfc_hba *phba)
7198 {
7199         int error;
7200
7201         /* Startup the kernel thread for this host adapter. */
7202         phba->worker_thread = kthread_run(lpfc_do_work, phba,
7203                                           "lpfc_worker_%d", phba->brd_no);
7204         if (IS_ERR(phba->worker_thread)) {
7205                 error = PTR_ERR(phba->worker_thread);
7206                 return error;
7207         }
7208
7209         return 0;
7210 }
7211
7212 /**
7213  * lpfc_unset_driver_resource_phase2 - Phase2 unset driver internal resources.
7214  * @phba: pointer to lpfc hba data structure.
7215  *
7216  * This routine is invoked to unset the driver internal resources set up after
7217  * the device specific resource setup for supporting the HBA device it
7218  * attached to.
7219  **/
7220 static void
7221 lpfc_unset_driver_resource_phase2(struct lpfc_hba *phba)
7222 {
7223         if (phba->wq) {
7224                 flush_workqueue(phba->wq);
7225                 destroy_workqueue(phba->wq);
7226                 phba->wq = NULL;
7227         }
7228
7229         /* Stop kernel worker thread */
7230         if (phba->worker_thread)
7231                 kthread_stop(phba->worker_thread);
7232 }
7233
7234 /**
7235  * lpfc_free_iocb_list - Free iocb list.
7236  * @phba: pointer to lpfc hba data structure.
7237  *
7238  * This routine is invoked to free the driver's IOCB list and memory.
7239  **/
7240 void
7241 lpfc_free_iocb_list(struct lpfc_hba *phba)
7242 {
7243         struct lpfc_iocbq *iocbq_entry = NULL, *iocbq_next = NULL;
7244
7245         spin_lock_irq(&phba->hbalock);
7246         list_for_each_entry_safe(iocbq_entry, iocbq_next,
7247                                  &phba->lpfc_iocb_list, list) {
7248                 list_del(&iocbq_entry->list);
7249                 kfree(iocbq_entry);
7250                 phba->total_iocbq_bufs--;
7251         }
7252         spin_unlock_irq(&phba->hbalock);
7253
7254         return;
7255 }
7256
7257 /**
7258  * lpfc_init_iocb_list - Allocate and initialize iocb list.
7259  * @phba: pointer to lpfc hba data structure.
7260  * @iocb_count: number of requested iocbs
7261  *
7262  * This routine is invoked to allocate and initizlize the driver's IOCB
7263  * list and set up the IOCB tag array accordingly.
7264  *
7265  * Return codes
7266  *      0 - successful
7267  *      other values - error
7268  **/
7269 int
7270 lpfc_init_iocb_list(struct lpfc_hba *phba, int iocb_count)
7271 {
7272         struct lpfc_iocbq *iocbq_entry = NULL;
7273         uint16_t iotag;
7274         int i;
7275
7276         /* Initialize and populate the iocb list per host.  */
7277         INIT_LIST_HEAD(&phba->lpfc_iocb_list);
7278         for (i = 0; i < iocb_count; i++) {
7279                 iocbq_entry = kzalloc(sizeof(struct lpfc_iocbq), GFP_KERNEL);
7280                 if (iocbq_entry == NULL) {
7281                         printk(KERN_ERR "%s: only allocated %d iocbs of "
7282                                 "expected %d count. Unloading driver.\n",
7283                                 __func__, i, iocb_count);
7284                         goto out_free_iocbq;
7285                 }
7286
7287                 iotag = lpfc_sli_next_iotag(phba, iocbq_entry);
7288                 if (iotag == 0) {
7289                         kfree(iocbq_entry);
7290                         printk(KERN_ERR "%s: failed to allocate IOTAG. "
7291                                 "Unloading driver.\n", __func__);
7292                         goto out_free_iocbq;
7293                 }
7294                 iocbq_entry->sli4_lxritag = NO_XRI;
7295                 iocbq_entry->sli4_xritag = NO_XRI;
7296
7297                 spin_lock_irq(&phba->hbalock);
7298                 list_add(&iocbq_entry->list, &phba->lpfc_iocb_list);
7299                 phba->total_iocbq_bufs++;
7300                 spin_unlock_irq(&phba->hbalock);
7301         }
7302
7303         return 0;
7304
7305 out_free_iocbq:
7306         lpfc_free_iocb_list(phba);
7307
7308         return -ENOMEM;
7309 }
7310
7311 /**
7312  * lpfc_free_sgl_list - Free a given sgl list.
7313  * @phba: pointer to lpfc hba data structure.
7314  * @sglq_list: pointer to the head of sgl list.
7315  *
7316  * This routine is invoked to free a give sgl list and memory.
7317  **/
7318 void
7319 lpfc_free_sgl_list(struct lpfc_hba *phba, struct list_head *sglq_list)
7320 {
7321         struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
7322
7323         list_for_each_entry_safe(sglq_entry, sglq_next, sglq_list, list) {
7324                 list_del(&sglq_entry->list);
7325                 lpfc_mbuf_free(phba, sglq_entry->virt, sglq_entry->phys);
7326                 kfree(sglq_entry);
7327         }
7328 }
7329
7330 /**
7331  * lpfc_free_els_sgl_list - Free els sgl list.
7332  * @phba: pointer to lpfc hba data structure.
7333  *
7334  * This routine is invoked to free the driver's els sgl list and memory.
7335  **/
7336 static void
7337 lpfc_free_els_sgl_list(struct lpfc_hba *phba)
7338 {
7339         LIST_HEAD(sglq_list);
7340
7341         /* Retrieve all els sgls from driver list */
7342         spin_lock_irq(&phba->hbalock);
7343         spin_lock(&phba->sli4_hba.sgl_list_lock);
7344         list_splice_init(&phba->sli4_hba.lpfc_els_sgl_list, &sglq_list);
7345         spin_unlock(&phba->sli4_hba.sgl_list_lock);
7346         spin_unlock_irq(&phba->hbalock);
7347
7348         /* Now free the sgl list */
7349         lpfc_free_sgl_list(phba, &sglq_list);
7350 }
7351
7352 /**
7353  * lpfc_free_nvmet_sgl_list - Free nvmet sgl list.
7354  * @phba: pointer to lpfc hba data structure.
7355  *
7356  * This routine is invoked to free the driver's nvmet sgl list and memory.
7357  **/
7358 static void
7359 lpfc_free_nvmet_sgl_list(struct lpfc_hba *phba)
7360 {
7361         struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
7362         LIST_HEAD(sglq_list);
7363
7364         /* Retrieve all nvmet sgls from driver list */
7365         spin_lock_irq(&phba->hbalock);
7366         spin_lock(&phba->sli4_hba.sgl_list_lock);
7367         list_splice_init(&phba->sli4_hba.lpfc_nvmet_sgl_list, &sglq_list);
7368         spin_unlock(&phba->sli4_hba.sgl_list_lock);
7369         spin_unlock_irq(&phba->hbalock);
7370
7371         /* Now free the sgl list */
7372         list_for_each_entry_safe(sglq_entry, sglq_next, &sglq_list, list) {
7373                 list_del(&sglq_entry->list);
7374                 lpfc_nvmet_buf_free(phba, sglq_entry->virt, sglq_entry->phys);
7375                 kfree(sglq_entry);
7376         }
7377
7378         /* Update the nvmet_xri_cnt to reflect no current sgls.
7379          * The next initialization cycle sets the count and allocates
7380          * the sgls over again.
7381          */
7382         phba->sli4_hba.nvmet_xri_cnt = 0;
7383 }
7384
7385 /**
7386  * lpfc_init_active_sgl_array - Allocate the buf to track active ELS XRIs.
7387  * @phba: pointer to lpfc hba data structure.
7388  *
7389  * This routine is invoked to allocate the driver's active sgl memory.
7390  * This array will hold the sglq_entry's for active IOs.
7391  **/
7392 static int
7393 lpfc_init_active_sgl_array(struct lpfc_hba *phba)
7394 {
7395         int size;
7396         size = sizeof(struct lpfc_sglq *);
7397         size *= phba->sli4_hba.max_cfg_param.max_xri;
7398
7399         phba->sli4_hba.lpfc_sglq_active_list =
7400                 kzalloc(size, GFP_KERNEL);
7401         if (!phba->sli4_hba.lpfc_sglq_active_list)
7402                 return -ENOMEM;
7403         return 0;
7404 }
7405
7406 /**
7407  * lpfc_free_active_sgl - Free the buf that tracks active ELS XRIs.
7408  * @phba: pointer to lpfc hba data structure.
7409  *
7410  * This routine is invoked to walk through the array of active sglq entries
7411  * and free all of the resources.
7412  * This is just a place holder for now.
7413  **/
7414 static void
7415 lpfc_free_active_sgl(struct lpfc_hba *phba)
7416 {
7417         kfree(phba->sli4_hba.lpfc_sglq_active_list);
7418 }
7419
7420 /**
7421  * lpfc_init_sgl_list - Allocate and initialize sgl list.
7422  * @phba: pointer to lpfc hba data structure.
7423  *
7424  * This routine is invoked to allocate and initizlize the driver's sgl
7425  * list and set up the sgl xritag tag array accordingly.
7426  *
7427  **/
7428 static void
7429 lpfc_init_sgl_list(struct lpfc_hba *phba)
7430 {
7431         /* Initialize and populate the sglq list per host/VF. */
7432         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_els_sgl_list);
7433         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_els_sgl_list);
7434         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_nvmet_sgl_list);
7435         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
7436
7437         /* els xri-sgl book keeping */
7438         phba->sli4_hba.els_xri_cnt = 0;
7439
7440         /* nvme xri-buffer book keeping */
7441         phba->sli4_hba.io_xri_cnt = 0;
7442 }
7443
7444 /**
7445  * lpfc_sli4_init_rpi_hdrs - Post the rpi header memory region to the port
7446  * @phba: pointer to lpfc hba data structure.
7447  *
7448  * This routine is invoked to post rpi header templates to the
7449  * port for those SLI4 ports that do not support extents.  This routine
7450  * posts a PAGE_SIZE memory region to the port to hold up to
7451  * PAGE_SIZE modulo 64 rpi context headers.  This is an initialization routine
7452  * and should be called only when interrupts are disabled.
7453  *
7454  * Return codes
7455  *      0 - successful
7456  *      -ERROR - otherwise.
7457  **/
7458 int
7459 lpfc_sli4_init_rpi_hdrs(struct lpfc_hba *phba)
7460 {
7461         int rc = 0;
7462         struct lpfc_rpi_hdr *rpi_hdr;
7463
7464         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_hdr_list);
7465         if (!phba->sli4_hba.rpi_hdrs_in_use)
7466                 return rc;
7467         if (phba->sli4_hba.extents_in_use)
7468                 return -EIO;
7469
7470         rpi_hdr = lpfc_sli4_create_rpi_hdr(phba);
7471         if (!rpi_hdr) {
7472                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7473                                 "0391 Error during rpi post operation\n");
7474                 lpfc_sli4_remove_rpis(phba);
7475                 rc = -ENODEV;
7476         }
7477
7478         return rc;
7479 }
7480
7481 /**
7482  * lpfc_sli4_create_rpi_hdr - Allocate an rpi header memory region
7483  * @phba: pointer to lpfc hba data structure.
7484  *
7485  * This routine is invoked to allocate a single 4KB memory region to
7486  * support rpis and stores them in the phba.  This single region
7487  * provides support for up to 64 rpis.  The region is used globally
7488  * by the device.
7489  *
7490  * Returns:
7491  *   A valid rpi hdr on success.
7492  *   A NULL pointer on any failure.
7493  **/
7494 struct lpfc_rpi_hdr *
7495 lpfc_sli4_create_rpi_hdr(struct lpfc_hba *phba)
7496 {
7497         uint16_t rpi_limit, curr_rpi_range;
7498         struct lpfc_dmabuf *dmabuf;
7499         struct lpfc_rpi_hdr *rpi_hdr;
7500
7501         /*
7502          * If the SLI4 port supports extents, posting the rpi header isn't
7503          * required.  Set the expected maximum count and let the actual value
7504          * get set when extents are fully allocated.
7505          */
7506         if (!phba->sli4_hba.rpi_hdrs_in_use)
7507                 return NULL;
7508         if (phba->sli4_hba.extents_in_use)
7509                 return NULL;
7510
7511         /* The limit on the logical index is just the max_rpi count. */
7512         rpi_limit = phba->sli4_hba.max_cfg_param.max_rpi;
7513
7514         spin_lock_irq(&phba->hbalock);
7515         /*
7516          * Establish the starting RPI in this header block.  The starting
7517          * rpi is normalized to a zero base because the physical rpi is
7518          * port based.
7519          */
7520         curr_rpi_range = phba->sli4_hba.next_rpi;
7521         spin_unlock_irq(&phba->hbalock);
7522
7523         /* Reached full RPI range */
7524         if (curr_rpi_range == rpi_limit)
7525                 return NULL;
7526
7527         /*
7528          * First allocate the protocol header region for the port.  The
7529          * port expects a 4KB DMA-mapped memory region that is 4K aligned.
7530          */
7531         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
7532         if (!dmabuf)
7533                 return NULL;
7534
7535         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
7536                                           LPFC_HDR_TEMPLATE_SIZE,
7537                                           &dmabuf->phys, GFP_KERNEL);
7538         if (!dmabuf->virt) {
7539                 rpi_hdr = NULL;
7540                 goto err_free_dmabuf;
7541         }
7542
7543         if (!IS_ALIGNED(dmabuf->phys, LPFC_HDR_TEMPLATE_SIZE)) {
7544                 rpi_hdr = NULL;
7545                 goto err_free_coherent;
7546         }
7547
7548         /* Save the rpi header data for cleanup later. */
7549         rpi_hdr = kzalloc(sizeof(struct lpfc_rpi_hdr), GFP_KERNEL);
7550         if (!rpi_hdr)
7551                 goto err_free_coherent;
7552
7553         rpi_hdr->dmabuf = dmabuf;
7554         rpi_hdr->len = LPFC_HDR_TEMPLATE_SIZE;
7555         rpi_hdr->page_count = 1;
7556         spin_lock_irq(&phba->hbalock);
7557
7558         /* The rpi_hdr stores the logical index only. */
7559         rpi_hdr->start_rpi = curr_rpi_range;
7560         rpi_hdr->next_rpi = phba->sli4_hba.next_rpi + LPFC_RPI_HDR_COUNT;
7561         list_add_tail(&rpi_hdr->list, &phba->sli4_hba.lpfc_rpi_hdr_list);
7562
7563         spin_unlock_irq(&phba->hbalock);
7564         return rpi_hdr;
7565
7566  err_free_coherent:
7567         dma_free_coherent(&phba->pcidev->dev, LPFC_HDR_TEMPLATE_SIZE,
7568                           dmabuf->virt, dmabuf->phys);
7569  err_free_dmabuf:
7570         kfree(dmabuf);
7571         return NULL;
7572 }
7573
7574 /**
7575  * lpfc_sli4_remove_rpi_hdrs - Remove all rpi header memory regions
7576  * @phba: pointer to lpfc hba data structure.
7577  *
7578  * This routine is invoked to remove all memory resources allocated
7579  * to support rpis for SLI4 ports not supporting extents. This routine
7580  * presumes the caller has released all rpis consumed by fabric or port
7581  * logins and is prepared to have the header pages removed.
7582  **/
7583 void
7584 lpfc_sli4_remove_rpi_hdrs(struct lpfc_hba *phba)
7585 {
7586         struct lpfc_rpi_hdr *rpi_hdr, *next_rpi_hdr;
7587
7588         if (!phba->sli4_hba.rpi_hdrs_in_use)
7589                 goto exit;
7590
7591         list_for_each_entry_safe(rpi_hdr, next_rpi_hdr,
7592                                  &phba->sli4_hba.lpfc_rpi_hdr_list, list) {
7593                 list_del(&rpi_hdr->list);
7594                 dma_free_coherent(&phba->pcidev->dev, rpi_hdr->len,
7595                                   rpi_hdr->dmabuf->virt, rpi_hdr->dmabuf->phys);
7596                 kfree(rpi_hdr->dmabuf);
7597                 kfree(rpi_hdr);
7598         }
7599  exit:
7600         /* There are no rpis available to the port now. */
7601         phba->sli4_hba.next_rpi = 0;
7602 }
7603
7604 /**
7605  * lpfc_hba_alloc - Allocate driver hba data structure for a device.
7606  * @pdev: pointer to pci device data structure.
7607  *
7608  * This routine is invoked to allocate the driver hba data structure for an
7609  * HBA device. If the allocation is successful, the phba reference to the
7610  * PCI device data structure is set.
7611  *
7612  * Return codes
7613  *      pointer to @phba - successful
7614  *      NULL - error
7615  **/
7616 static struct lpfc_hba *
7617 lpfc_hba_alloc(struct pci_dev *pdev)
7618 {
7619         struct lpfc_hba *phba;
7620
7621         /* Allocate memory for HBA structure */
7622         phba = kzalloc(sizeof(struct lpfc_hba), GFP_KERNEL);
7623         if (!phba) {
7624                 dev_err(&pdev->dev, "failed to allocate hba struct\n");
7625                 return NULL;
7626         }
7627
7628         /* Set reference to PCI device in HBA structure */
7629         phba->pcidev = pdev;
7630
7631         /* Assign an unused board number */
7632         phba->brd_no = lpfc_get_instance();
7633         if (phba->brd_no < 0) {
7634                 kfree(phba);
7635                 return NULL;
7636         }
7637         phba->eratt_poll_interval = LPFC_ERATT_POLL_INTERVAL;
7638
7639         spin_lock_init(&phba->ct_ev_lock);
7640         INIT_LIST_HEAD(&phba->ct_ev_waiters);
7641
7642         return phba;
7643 }
7644
7645 /**
7646  * lpfc_hba_free - Free driver hba data structure with a device.
7647  * @phba: pointer to lpfc hba data structure.
7648  *
7649  * This routine is invoked to free the driver hba data structure with an
7650  * HBA device.
7651  **/
7652 static void
7653 lpfc_hba_free(struct lpfc_hba *phba)
7654 {
7655         if (phba->sli_rev == LPFC_SLI_REV4)
7656                 kfree(phba->sli4_hba.hdwq);
7657
7658         /* Release the driver assigned board number */
7659         idr_remove(&lpfc_hba_index, phba->brd_no);
7660
7661         /* Free memory allocated with sli3 rings */
7662         kfree(phba->sli.sli3_ring);
7663         phba->sli.sli3_ring = NULL;
7664
7665         kfree(phba);
7666         return;
7667 }
7668
7669 /**
7670  * lpfc_create_shost - Create hba physical port with associated scsi host.
7671  * @phba: pointer to lpfc hba data structure.
7672  *
7673  * This routine is invoked to create HBA physical port and associate a SCSI
7674  * host with it.
7675  *
7676  * Return codes
7677  *      0 - successful
7678  *      other values - error
7679  **/
7680 static int
7681 lpfc_create_shost(struct lpfc_hba *phba)
7682 {
7683         struct lpfc_vport *vport;
7684         struct Scsi_Host  *shost;
7685
7686         /* Initialize HBA FC structure */
7687         phba->fc_edtov = FF_DEF_EDTOV;
7688         phba->fc_ratov = FF_DEF_RATOV;
7689         phba->fc_altov = FF_DEF_ALTOV;
7690         phba->fc_arbtov = FF_DEF_ARBTOV;
7691
7692         atomic_set(&phba->sdev_cnt, 0);
7693         vport = lpfc_create_port(phba, phba->brd_no, &phba->pcidev->dev);
7694         if (!vport)
7695                 return -ENODEV;
7696
7697         shost = lpfc_shost_from_vport(vport);
7698         phba->pport = vport;
7699
7700         if (phba->nvmet_support) {
7701                 /* Only 1 vport (pport) will support NVME target */
7702                 phba->targetport = NULL;
7703                 phba->cfg_enable_fc4_type = LPFC_ENABLE_NVME;
7704                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME_DISC,
7705                                 "6076 NVME Target Found\n");
7706         }
7707
7708         lpfc_debugfs_initialize(vport);
7709         /* Put reference to SCSI host to driver's device private data */
7710         pci_set_drvdata(phba->pcidev, shost);
7711
7712         /*
7713          * At this point we are fully registered with PSA. In addition,
7714          * any initial discovery should be completed.
7715          */
7716         vport->load_flag |= FC_ALLOW_FDMI;
7717         if (phba->cfg_enable_SmartSAN ||
7718             (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) {
7719
7720                 /* Setup appropriate attribute masks */
7721                 vport->fdmi_hba_mask = LPFC_FDMI2_HBA_ATTR;
7722                 if (phba->cfg_enable_SmartSAN)
7723                         vport->fdmi_port_mask = LPFC_FDMI2_SMART_ATTR;
7724                 else
7725                         vport->fdmi_port_mask = LPFC_FDMI2_PORT_ATTR;
7726         }
7727         return 0;
7728 }
7729
7730 /**
7731  * lpfc_destroy_shost - Destroy hba physical port with associated scsi host.
7732  * @phba: pointer to lpfc hba data structure.
7733  *
7734  * This routine is invoked to destroy HBA physical port and the associated
7735  * SCSI host.
7736  **/
7737 static void
7738 lpfc_destroy_shost(struct lpfc_hba *phba)
7739 {
7740         struct lpfc_vport *vport = phba->pport;
7741
7742         /* Destroy physical port that associated with the SCSI host */
7743         destroy_port(vport);
7744
7745         return;
7746 }
7747
7748 /**
7749  * lpfc_setup_bg - Setup Block guard structures and debug areas.
7750  * @phba: pointer to lpfc hba data structure.
7751  * @shost: the shost to be used to detect Block guard settings.
7752  *
7753  * This routine sets up the local Block guard protocol settings for @shost.
7754  * This routine also allocates memory for debugging bg buffers.
7755  **/
7756 static void
7757 lpfc_setup_bg(struct lpfc_hba *phba, struct Scsi_Host *shost)
7758 {
7759         uint32_t old_mask;
7760         uint32_t old_guard;
7761
7762         if (phba->cfg_prot_mask && phba->cfg_prot_guard) {
7763                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7764                                 "1478 Registering BlockGuard with the "
7765                                 "SCSI layer\n");
7766
7767                 old_mask = phba->cfg_prot_mask;
7768                 old_guard = phba->cfg_prot_guard;
7769
7770                 /* Only allow supported values */
7771                 phba->cfg_prot_mask &= (SHOST_DIF_TYPE1_PROTECTION |
7772                         SHOST_DIX_TYPE0_PROTECTION |
7773                         SHOST_DIX_TYPE1_PROTECTION);
7774                 phba->cfg_prot_guard &= (SHOST_DIX_GUARD_IP |
7775                                          SHOST_DIX_GUARD_CRC);
7776
7777                 /* DIF Type 1 protection for profiles AST1/C1 is end to end */
7778                 if (phba->cfg_prot_mask == SHOST_DIX_TYPE1_PROTECTION)
7779                         phba->cfg_prot_mask |= SHOST_DIF_TYPE1_PROTECTION;
7780
7781                 if (phba->cfg_prot_mask && phba->cfg_prot_guard) {
7782                         if ((old_mask != phba->cfg_prot_mask) ||
7783                                 (old_guard != phba->cfg_prot_guard))
7784                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7785                                         "1475 Registering BlockGuard with the "
7786                                         "SCSI layer: mask %d  guard %d\n",
7787                                         phba->cfg_prot_mask,
7788                                         phba->cfg_prot_guard);
7789
7790                         scsi_host_set_prot(shost, phba->cfg_prot_mask);
7791                         scsi_host_set_guard(shost, phba->cfg_prot_guard);
7792                 } else
7793                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7794                                 "1479 Not Registering BlockGuard with the SCSI "
7795                                 "layer, Bad protection parameters: %d %d\n",
7796                                 old_mask, old_guard);
7797         }
7798 }
7799
7800 /**
7801  * lpfc_post_init_setup - Perform necessary device post initialization setup.
7802  * @phba: pointer to lpfc hba data structure.
7803  *
7804  * This routine is invoked to perform all the necessary post initialization
7805  * setup for the device.
7806  **/
7807 static void
7808 lpfc_post_init_setup(struct lpfc_hba *phba)
7809 {
7810         struct Scsi_Host  *shost;
7811         struct lpfc_adapter_event_header adapter_event;
7812
7813         /* Get the default values for Model Name and Description */
7814         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
7815
7816         /*
7817          * hba setup may have changed the hba_queue_depth so we need to
7818          * adjust the value of can_queue.
7819          */
7820         shost = pci_get_drvdata(phba->pcidev);
7821         shost->can_queue = phba->cfg_hba_queue_depth - 10;
7822
7823         lpfc_host_attrib_init(shost);
7824
7825         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
7826                 spin_lock_irq(shost->host_lock);
7827                 lpfc_poll_start_timer(phba);
7828                 spin_unlock_irq(shost->host_lock);
7829         }
7830
7831         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7832                         "0428 Perform SCSI scan\n");
7833         /* Send board arrival event to upper layer */
7834         adapter_event.event_type = FC_REG_ADAPTER_EVENT;
7835         adapter_event.subcategory = LPFC_EVENT_ARRIVAL;
7836         fc_host_post_vendor_event(shost, fc_get_event_number(),
7837                                   sizeof(adapter_event),
7838                                   (char *) &adapter_event,
7839                                   LPFC_NL_VENDOR_ID);
7840         return;
7841 }
7842
7843 /**
7844  * lpfc_sli_pci_mem_setup - Setup SLI3 HBA PCI memory space.
7845  * @phba: pointer to lpfc hba data structure.
7846  *
7847  * This routine is invoked to set up the PCI device memory space for device
7848  * with SLI-3 interface spec.
7849  *
7850  * Return codes
7851  *      0 - successful
7852  *      other values - error
7853  **/
7854 static int
7855 lpfc_sli_pci_mem_setup(struct lpfc_hba *phba)
7856 {
7857         struct pci_dev *pdev = phba->pcidev;
7858         unsigned long bar0map_len, bar2map_len;
7859         int i, hbq_count;
7860         void *ptr;
7861         int error;
7862
7863         if (!pdev)
7864                 return -ENODEV;
7865
7866         /* Set the device DMA mask size */
7867         error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
7868         if (error)
7869                 error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
7870         if (error)
7871                 return error;
7872         error = -ENODEV;
7873
7874         /* Get the bus address of Bar0 and Bar2 and the number of bytes
7875          * required by each mapping.
7876          */
7877         phba->pci_bar0_map = pci_resource_start(pdev, 0);
7878         bar0map_len = pci_resource_len(pdev, 0);
7879
7880         phba->pci_bar2_map = pci_resource_start(pdev, 2);
7881         bar2map_len = pci_resource_len(pdev, 2);
7882
7883         /* Map HBA SLIM to a kernel virtual address. */
7884         phba->slim_memmap_p = ioremap(phba->pci_bar0_map, bar0map_len);
7885         if (!phba->slim_memmap_p) {
7886                 dev_printk(KERN_ERR, &pdev->dev,
7887                            "ioremap failed for SLIM memory.\n");
7888                 goto out;
7889         }
7890
7891         /* Map HBA Control Registers to a kernel virtual address. */
7892         phba->ctrl_regs_memmap_p = ioremap(phba->pci_bar2_map, bar2map_len);
7893         if (!phba->ctrl_regs_memmap_p) {
7894                 dev_printk(KERN_ERR, &pdev->dev,
7895                            "ioremap failed for HBA control registers.\n");
7896                 goto out_iounmap_slim;
7897         }
7898
7899         /* Allocate memory for SLI-2 structures */
7900         phba->slim2p.virt = dma_alloc_coherent(&pdev->dev, SLI2_SLIM_SIZE,
7901                                                &phba->slim2p.phys, GFP_KERNEL);
7902         if (!phba->slim2p.virt)
7903                 goto out_iounmap;
7904
7905         phba->mbox = phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, mbx);
7906         phba->mbox_ext = (phba->slim2p.virt +
7907                 offsetof(struct lpfc_sli2_slim, mbx_ext_words));
7908         phba->pcb = (phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, pcb));
7909         phba->IOCBs = (phba->slim2p.virt +
7910                        offsetof(struct lpfc_sli2_slim, IOCBs));
7911
7912         phba->hbqslimp.virt = dma_alloc_coherent(&pdev->dev,
7913                                                  lpfc_sli_hbq_size(),
7914                                                  &phba->hbqslimp.phys,
7915                                                  GFP_KERNEL);
7916         if (!phba->hbqslimp.virt)
7917                 goto out_free_slim;
7918
7919         hbq_count = lpfc_sli_hbq_count();
7920         ptr = phba->hbqslimp.virt;
7921         for (i = 0; i < hbq_count; ++i) {
7922                 phba->hbqs[i].hbq_virt = ptr;
7923                 INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list);
7924                 ptr += (lpfc_hbq_defs[i]->entry_count *
7925                         sizeof(struct lpfc_hbq_entry));
7926         }
7927         phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_els_hbq_alloc;
7928         phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_els_hbq_free;
7929
7930         memset(phba->hbqslimp.virt, 0, lpfc_sli_hbq_size());
7931
7932         phba->MBslimaddr = phba->slim_memmap_p;
7933         phba->HAregaddr = phba->ctrl_regs_memmap_p + HA_REG_OFFSET;
7934         phba->CAregaddr = phba->ctrl_regs_memmap_p + CA_REG_OFFSET;
7935         phba->HSregaddr = phba->ctrl_regs_memmap_p + HS_REG_OFFSET;
7936         phba->HCregaddr = phba->ctrl_regs_memmap_p + HC_REG_OFFSET;
7937
7938         return 0;
7939
7940 out_free_slim:
7941         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
7942                           phba->slim2p.virt, phba->slim2p.phys);
7943 out_iounmap:
7944         iounmap(phba->ctrl_regs_memmap_p);
7945 out_iounmap_slim:
7946         iounmap(phba->slim_memmap_p);
7947 out:
7948         return error;
7949 }
7950
7951 /**
7952  * lpfc_sli_pci_mem_unset - Unset SLI3 HBA PCI memory space.
7953  * @phba: pointer to lpfc hba data structure.
7954  *
7955  * This routine is invoked to unset the PCI device memory space for device
7956  * with SLI-3 interface spec.
7957  **/
7958 static void
7959 lpfc_sli_pci_mem_unset(struct lpfc_hba *phba)
7960 {
7961         struct pci_dev *pdev;
7962
7963         /* Obtain PCI device reference */
7964         if (!phba->pcidev)
7965                 return;
7966         else
7967                 pdev = phba->pcidev;
7968
7969         /* Free coherent DMA memory allocated */
7970         dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
7971                           phba->hbqslimp.virt, phba->hbqslimp.phys);
7972         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
7973                           phba->slim2p.virt, phba->slim2p.phys);
7974
7975         /* I/O memory unmap */
7976         iounmap(phba->ctrl_regs_memmap_p);
7977         iounmap(phba->slim_memmap_p);
7978
7979         return;
7980 }
7981
7982 /**
7983  * lpfc_sli4_post_status_check - Wait for SLI4 POST done and check status
7984  * @phba: pointer to lpfc hba data structure.
7985  *
7986  * This routine is invoked to wait for SLI4 device Power On Self Test (POST)
7987  * done and check status.
7988  *
7989  * Return 0 if successful, otherwise -ENODEV.
7990  **/
7991 int
7992 lpfc_sli4_post_status_check(struct lpfc_hba *phba)
7993 {
7994         struct lpfc_register portsmphr_reg, uerrlo_reg, uerrhi_reg;
7995         struct lpfc_register reg_data;
7996         int i, port_error = 0;
7997         uint32_t if_type;
7998
7999         memset(&portsmphr_reg, 0, sizeof(portsmphr_reg));
8000         memset(&reg_data, 0, sizeof(reg_data));
8001         if (!phba->sli4_hba.PSMPHRregaddr)
8002                 return -ENODEV;
8003
8004         /* Wait up to 30 seconds for the SLI Port POST done and ready */
8005         for (i = 0; i < 3000; i++) {
8006                 if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
8007                         &portsmphr_reg.word0) ||
8008                         (bf_get(lpfc_port_smphr_perr, &portsmphr_reg))) {
8009                         /* Port has a fatal POST error, break out */
8010                         port_error = -ENODEV;
8011                         break;
8012                 }
8013                 if (LPFC_POST_STAGE_PORT_READY ==
8014                     bf_get(lpfc_port_smphr_port_status, &portsmphr_reg))
8015                         break;
8016                 msleep(10);
8017         }
8018
8019         /*
8020          * If there was a port error during POST, then don't proceed with
8021          * other register reads as the data may not be valid.  Just exit.
8022          */
8023         if (port_error) {
8024                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8025                         "1408 Port Failed POST - portsmphr=0x%x, "
8026                         "perr=x%x, sfi=x%x, nip=x%x, ipc=x%x, scr1=x%x, "
8027                         "scr2=x%x, hscratch=x%x, pstatus=x%x\n",
8028                         portsmphr_reg.word0,
8029                         bf_get(lpfc_port_smphr_perr, &portsmphr_reg),
8030                         bf_get(lpfc_port_smphr_sfi, &portsmphr_reg),
8031                         bf_get(lpfc_port_smphr_nip, &portsmphr_reg),
8032                         bf_get(lpfc_port_smphr_ipc, &portsmphr_reg),
8033                         bf_get(lpfc_port_smphr_scr1, &portsmphr_reg),
8034                         bf_get(lpfc_port_smphr_scr2, &portsmphr_reg),
8035                         bf_get(lpfc_port_smphr_host_scratch, &portsmphr_reg),
8036                         bf_get(lpfc_port_smphr_port_status, &portsmphr_reg));
8037         } else {
8038                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8039                                 "2534 Device Info: SLIFamily=0x%x, "
8040                                 "SLIRev=0x%x, IFType=0x%x, SLIHint_1=0x%x, "
8041                                 "SLIHint_2=0x%x, FT=0x%x\n",
8042                                 bf_get(lpfc_sli_intf_sli_family,
8043                                        &phba->sli4_hba.sli_intf),
8044                                 bf_get(lpfc_sli_intf_slirev,
8045                                        &phba->sli4_hba.sli_intf),
8046                                 bf_get(lpfc_sli_intf_if_type,
8047                                        &phba->sli4_hba.sli_intf),
8048                                 bf_get(lpfc_sli_intf_sli_hint1,
8049                                        &phba->sli4_hba.sli_intf),
8050                                 bf_get(lpfc_sli_intf_sli_hint2,
8051                                        &phba->sli4_hba.sli_intf),
8052                                 bf_get(lpfc_sli_intf_func_type,
8053                                        &phba->sli4_hba.sli_intf));
8054                 /*
8055                  * Check for other Port errors during the initialization
8056                  * process.  Fail the load if the port did not come up
8057                  * correctly.
8058                  */
8059                 if_type = bf_get(lpfc_sli_intf_if_type,
8060                                  &phba->sli4_hba.sli_intf);
8061                 switch (if_type) {
8062                 case LPFC_SLI_INTF_IF_TYPE_0:
8063                         phba->sli4_hba.ue_mask_lo =
8064                               readl(phba->sli4_hba.u.if_type0.UEMASKLOregaddr);
8065                         phba->sli4_hba.ue_mask_hi =
8066                               readl(phba->sli4_hba.u.if_type0.UEMASKHIregaddr);
8067                         uerrlo_reg.word0 =
8068                               readl(phba->sli4_hba.u.if_type0.UERRLOregaddr);
8069                         uerrhi_reg.word0 =
8070                                 readl(phba->sli4_hba.u.if_type0.UERRHIregaddr);
8071                         if ((~phba->sli4_hba.ue_mask_lo & uerrlo_reg.word0) ||
8072                             (~phba->sli4_hba.ue_mask_hi & uerrhi_reg.word0)) {
8073                                 lpfc_printf_log(phba, KERN_ERR,
8074                                                 LOG_TRACE_EVENT,
8075                                                 "1422 Unrecoverable Error "
8076                                                 "Detected during POST "
8077                                                 "uerr_lo_reg=0x%x, "
8078                                                 "uerr_hi_reg=0x%x, "
8079                                                 "ue_mask_lo_reg=0x%x, "
8080                                                 "ue_mask_hi_reg=0x%x\n",
8081                                                 uerrlo_reg.word0,
8082                                                 uerrhi_reg.word0,
8083                                                 phba->sli4_hba.ue_mask_lo,
8084                                                 phba->sli4_hba.ue_mask_hi);
8085                                 port_error = -ENODEV;
8086                         }
8087                         break;
8088                 case LPFC_SLI_INTF_IF_TYPE_2:
8089                 case LPFC_SLI_INTF_IF_TYPE_6:
8090                         /* Final checks.  The port status should be clean. */
8091                         if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
8092                                 &reg_data.word0) ||
8093                                 (bf_get(lpfc_sliport_status_err, &reg_data) &&
8094                                  !bf_get(lpfc_sliport_status_rn, &reg_data))) {
8095                                 phba->work_status[0] =
8096                                         readl(phba->sli4_hba.u.if_type2.
8097                                               ERR1regaddr);
8098                                 phba->work_status[1] =
8099                                         readl(phba->sli4_hba.u.if_type2.
8100                                               ERR2regaddr);
8101                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8102                                         "2888 Unrecoverable port error "
8103                                         "following POST: port status reg "
8104                                         "0x%x, port_smphr reg 0x%x, "
8105                                         "error 1=0x%x, error 2=0x%x\n",
8106                                         reg_data.word0,
8107                                         portsmphr_reg.word0,
8108                                         phba->work_status[0],
8109                                         phba->work_status[1]);
8110                                 port_error = -ENODEV;
8111                         }
8112                         break;
8113                 case LPFC_SLI_INTF_IF_TYPE_1:
8114                 default:
8115                         break;
8116                 }
8117         }
8118         return port_error;
8119 }
8120
8121 /**
8122  * lpfc_sli4_bar0_register_memmap - Set up SLI4 BAR0 register memory map.
8123  * @phba: pointer to lpfc hba data structure.
8124  * @if_type:  The SLI4 interface type getting configured.
8125  *
8126  * This routine is invoked to set up SLI4 BAR0 PCI config space register
8127  * memory map.
8128  **/
8129 static void
8130 lpfc_sli4_bar0_register_memmap(struct lpfc_hba *phba, uint32_t if_type)
8131 {
8132         switch (if_type) {
8133         case LPFC_SLI_INTF_IF_TYPE_0:
8134                 phba->sli4_hba.u.if_type0.UERRLOregaddr =
8135                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_LO;
8136                 phba->sli4_hba.u.if_type0.UERRHIregaddr =
8137                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_HI;
8138                 phba->sli4_hba.u.if_type0.UEMASKLOregaddr =
8139                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_LO;
8140                 phba->sli4_hba.u.if_type0.UEMASKHIregaddr =
8141                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_HI;
8142                 phba->sli4_hba.SLIINTFregaddr =
8143                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
8144                 break;
8145         case LPFC_SLI_INTF_IF_TYPE_2:
8146                 phba->sli4_hba.u.if_type2.EQDregaddr =
8147                         phba->sli4_hba.conf_regs_memmap_p +
8148                                                 LPFC_CTL_PORT_EQ_DELAY_OFFSET;
8149                 phba->sli4_hba.u.if_type2.ERR1regaddr =
8150                         phba->sli4_hba.conf_regs_memmap_p +
8151                                                 LPFC_CTL_PORT_ER1_OFFSET;
8152                 phba->sli4_hba.u.if_type2.ERR2regaddr =
8153                         phba->sli4_hba.conf_regs_memmap_p +
8154                                                 LPFC_CTL_PORT_ER2_OFFSET;
8155                 phba->sli4_hba.u.if_type2.CTRLregaddr =
8156                         phba->sli4_hba.conf_regs_memmap_p +
8157                                                 LPFC_CTL_PORT_CTL_OFFSET;
8158                 phba->sli4_hba.u.if_type2.STATUSregaddr =
8159                         phba->sli4_hba.conf_regs_memmap_p +
8160                                                 LPFC_CTL_PORT_STA_OFFSET;
8161                 phba->sli4_hba.SLIINTFregaddr =
8162                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
8163                 phba->sli4_hba.PSMPHRregaddr =
8164                         phba->sli4_hba.conf_regs_memmap_p +
8165                                                 LPFC_CTL_PORT_SEM_OFFSET;
8166                 phba->sli4_hba.RQDBregaddr =
8167                         phba->sli4_hba.conf_regs_memmap_p +
8168                                                 LPFC_ULP0_RQ_DOORBELL;
8169                 phba->sli4_hba.WQDBregaddr =
8170                         phba->sli4_hba.conf_regs_memmap_p +
8171                                                 LPFC_ULP0_WQ_DOORBELL;
8172                 phba->sli4_hba.CQDBregaddr =
8173                         phba->sli4_hba.conf_regs_memmap_p + LPFC_EQCQ_DOORBELL;
8174                 phba->sli4_hba.EQDBregaddr = phba->sli4_hba.CQDBregaddr;
8175                 phba->sli4_hba.MQDBregaddr =
8176                         phba->sli4_hba.conf_regs_memmap_p + LPFC_MQ_DOORBELL;
8177                 phba->sli4_hba.BMBXregaddr =
8178                         phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX;
8179                 break;
8180         case LPFC_SLI_INTF_IF_TYPE_6:
8181                 phba->sli4_hba.u.if_type2.EQDregaddr =
8182                         phba->sli4_hba.conf_regs_memmap_p +
8183                                                 LPFC_CTL_PORT_EQ_DELAY_OFFSET;
8184                 phba->sli4_hba.u.if_type2.ERR1regaddr =
8185                         phba->sli4_hba.conf_regs_memmap_p +
8186                                                 LPFC_CTL_PORT_ER1_OFFSET;
8187                 phba->sli4_hba.u.if_type2.ERR2regaddr =
8188                         phba->sli4_hba.conf_regs_memmap_p +
8189                                                 LPFC_CTL_PORT_ER2_OFFSET;
8190                 phba->sli4_hba.u.if_type2.CTRLregaddr =
8191                         phba->sli4_hba.conf_regs_memmap_p +
8192                                                 LPFC_CTL_PORT_CTL_OFFSET;
8193                 phba->sli4_hba.u.if_type2.STATUSregaddr =
8194                         phba->sli4_hba.conf_regs_memmap_p +
8195                                                 LPFC_CTL_PORT_STA_OFFSET;
8196                 phba->sli4_hba.PSMPHRregaddr =
8197                         phba->sli4_hba.conf_regs_memmap_p +
8198                                                 LPFC_CTL_PORT_SEM_OFFSET;
8199                 phba->sli4_hba.BMBXregaddr =
8200                         phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX;
8201                 break;
8202         case LPFC_SLI_INTF_IF_TYPE_1:
8203         default:
8204                 dev_printk(KERN_ERR, &phba->pcidev->dev,
8205                            "FATAL - unsupported SLI4 interface type - %d\n",
8206                            if_type);
8207                 break;
8208         }
8209 }
8210
8211 /**
8212  * lpfc_sli4_bar1_register_memmap - Set up SLI4 BAR1 register memory map.
8213  * @phba: pointer to lpfc hba data structure.
8214  * @if_type: sli if type to operate on.
8215  *
8216  * This routine is invoked to set up SLI4 BAR1 register memory map.
8217  **/
8218 static void
8219 lpfc_sli4_bar1_register_memmap(struct lpfc_hba *phba, uint32_t if_type)
8220 {
8221         switch (if_type) {
8222         case LPFC_SLI_INTF_IF_TYPE_0:
8223                 phba->sli4_hba.PSMPHRregaddr =
8224                         phba->sli4_hba.ctrl_regs_memmap_p +
8225                         LPFC_SLIPORT_IF0_SMPHR;
8226                 phba->sli4_hba.ISRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
8227                         LPFC_HST_ISR0;
8228                 phba->sli4_hba.IMRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
8229                         LPFC_HST_IMR0;
8230                 phba->sli4_hba.ISCRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
8231                         LPFC_HST_ISCR0;
8232                 break;
8233         case LPFC_SLI_INTF_IF_TYPE_6:
8234                 phba->sli4_hba.RQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
8235                         LPFC_IF6_RQ_DOORBELL;
8236                 phba->sli4_hba.WQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
8237                         LPFC_IF6_WQ_DOORBELL;
8238                 phba->sli4_hba.CQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
8239                         LPFC_IF6_CQ_DOORBELL;
8240                 phba->sli4_hba.EQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
8241                         LPFC_IF6_EQ_DOORBELL;
8242                 phba->sli4_hba.MQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
8243                         LPFC_IF6_MQ_DOORBELL;
8244                 break;
8245         case LPFC_SLI_INTF_IF_TYPE_2:
8246         case LPFC_SLI_INTF_IF_TYPE_1:
8247         default:
8248                 dev_err(&phba->pcidev->dev,
8249                            "FATAL - unsupported SLI4 interface type - %d\n",
8250                            if_type);
8251                 break;
8252         }
8253 }
8254
8255 /**
8256  * lpfc_sli4_bar2_register_memmap - Set up SLI4 BAR2 register memory map.
8257  * @phba: pointer to lpfc hba data structure.
8258  * @vf: virtual function number
8259  *
8260  * This routine is invoked to set up SLI4 BAR2 doorbell register memory map
8261  * based on the given viftual function number, @vf.
8262  *
8263  * Return 0 if successful, otherwise -ENODEV.
8264  **/
8265 static int
8266 lpfc_sli4_bar2_register_memmap(struct lpfc_hba *phba, uint32_t vf)
8267 {
8268         if (vf > LPFC_VIR_FUNC_MAX)
8269                 return -ENODEV;
8270
8271         phba->sli4_hba.RQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
8272                                 vf * LPFC_VFR_PAGE_SIZE +
8273                                         LPFC_ULP0_RQ_DOORBELL);
8274         phba->sli4_hba.WQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
8275                                 vf * LPFC_VFR_PAGE_SIZE +
8276                                         LPFC_ULP0_WQ_DOORBELL);
8277         phba->sli4_hba.CQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
8278                                 vf * LPFC_VFR_PAGE_SIZE +
8279                                         LPFC_EQCQ_DOORBELL);
8280         phba->sli4_hba.EQDBregaddr = phba->sli4_hba.CQDBregaddr;
8281         phba->sli4_hba.MQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
8282                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_MQ_DOORBELL);
8283         phba->sli4_hba.BMBXregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
8284                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_BMBX);
8285         return 0;
8286 }
8287
8288 /**
8289  * lpfc_create_bootstrap_mbox - Create the bootstrap mailbox
8290  * @phba: pointer to lpfc hba data structure.
8291  *
8292  * This routine is invoked to create the bootstrap mailbox
8293  * region consistent with the SLI-4 interface spec.  This
8294  * routine allocates all memory necessary to communicate
8295  * mailbox commands to the port and sets up all alignment
8296  * needs.  No locks are expected to be held when calling
8297  * this routine.
8298  *
8299  * Return codes
8300  *      0 - successful
8301  *      -ENOMEM - could not allocated memory.
8302  **/
8303 static int
8304 lpfc_create_bootstrap_mbox(struct lpfc_hba *phba)
8305 {
8306         uint32_t bmbx_size;
8307         struct lpfc_dmabuf *dmabuf;
8308         struct dma_address *dma_address;
8309         uint32_t pa_addr;
8310         uint64_t phys_addr;
8311
8312         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
8313         if (!dmabuf)
8314                 return -ENOMEM;
8315
8316         /*
8317          * The bootstrap mailbox region is comprised of 2 parts
8318          * plus an alignment restriction of 16 bytes.
8319          */
8320         bmbx_size = sizeof(struct lpfc_bmbx_create) + (LPFC_ALIGN_16_BYTE - 1);
8321         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev, bmbx_size,
8322                                           &dmabuf->phys, GFP_KERNEL);
8323         if (!dmabuf->virt) {
8324                 kfree(dmabuf);
8325                 return -ENOMEM;
8326         }
8327
8328         /*
8329          * Initialize the bootstrap mailbox pointers now so that the register
8330          * operations are simple later.  The mailbox dma address is required
8331          * to be 16-byte aligned.  Also align the virtual memory as each
8332          * maibox is copied into the bmbx mailbox region before issuing the
8333          * command to the port.
8334          */
8335         phba->sli4_hba.bmbx.dmabuf = dmabuf;
8336         phba->sli4_hba.bmbx.bmbx_size = bmbx_size;
8337
8338         phba->sli4_hba.bmbx.avirt = PTR_ALIGN(dmabuf->virt,
8339                                               LPFC_ALIGN_16_BYTE);
8340         phba->sli4_hba.bmbx.aphys = ALIGN(dmabuf->phys,
8341                                               LPFC_ALIGN_16_BYTE);
8342
8343         /*
8344          * Set the high and low physical addresses now.  The SLI4 alignment
8345          * requirement is 16 bytes and the mailbox is posted to the port
8346          * as two 30-bit addresses.  The other data is a bit marking whether
8347          * the 30-bit address is the high or low address.
8348          * Upcast bmbx aphys to 64bits so shift instruction compiles
8349          * clean on 32 bit machines.
8350          */
8351         dma_address = &phba->sli4_hba.bmbx.dma_address;
8352         phys_addr = (uint64_t)phba->sli4_hba.bmbx.aphys;
8353         pa_addr = (uint32_t) ((phys_addr >> 34) & 0x3fffffff);
8354         dma_address->addr_hi = (uint32_t) ((pa_addr << 2) |
8355                                            LPFC_BMBX_BIT1_ADDR_HI);
8356
8357         pa_addr = (uint32_t) ((phba->sli4_hba.bmbx.aphys >> 4) & 0x3fffffff);
8358         dma_address->addr_lo = (uint32_t) ((pa_addr << 2) |
8359                                            LPFC_BMBX_BIT1_ADDR_LO);
8360         return 0;
8361 }
8362
8363 /**
8364  * lpfc_destroy_bootstrap_mbox - Destroy all bootstrap mailbox resources
8365  * @phba: pointer to lpfc hba data structure.
8366  *
8367  * This routine is invoked to teardown the bootstrap mailbox
8368  * region and release all host resources. This routine requires
8369  * the caller to ensure all mailbox commands recovered, no
8370  * additional mailbox comands are sent, and interrupts are disabled
8371  * before calling this routine.
8372  *
8373  **/
8374 static void
8375 lpfc_destroy_bootstrap_mbox(struct lpfc_hba *phba)
8376 {
8377         dma_free_coherent(&phba->pcidev->dev,
8378                           phba->sli4_hba.bmbx.bmbx_size,
8379                           phba->sli4_hba.bmbx.dmabuf->virt,
8380                           phba->sli4_hba.bmbx.dmabuf->phys);
8381
8382         kfree(phba->sli4_hba.bmbx.dmabuf);
8383         memset(&phba->sli4_hba.bmbx, 0, sizeof(struct lpfc_bmbx));
8384 }
8385
8386 static const char * const lpfc_topo_to_str[] = {
8387         "Loop then P2P",
8388         "Loopback",
8389         "P2P Only",
8390         "Unsupported",
8391         "Loop Only",
8392         "Unsupported",
8393         "P2P then Loop",
8394 };
8395
8396 #define LINK_FLAGS_DEF  0x0
8397 #define LINK_FLAGS_P2P  0x1
8398 #define LINK_FLAGS_LOOP 0x2
8399 /**
8400  * lpfc_map_topology - Map the topology read from READ_CONFIG
8401  * @phba: pointer to lpfc hba data structure.
8402  * @rd_config: pointer to read config data
8403  *
8404  * This routine is invoked to map the topology values as read
8405  * from the read config mailbox command. If the persistent
8406  * topology feature is supported, the firmware will provide the
8407  * saved topology information to be used in INIT_LINK
8408  **/
8409 static void
8410 lpfc_map_topology(struct lpfc_hba *phba, struct lpfc_mbx_read_config *rd_config)
8411 {
8412         u8 ptv, tf, pt;
8413
8414         ptv = bf_get(lpfc_mbx_rd_conf_ptv, rd_config);
8415         tf = bf_get(lpfc_mbx_rd_conf_tf, rd_config);
8416         pt = bf_get(lpfc_mbx_rd_conf_pt, rd_config);
8417
8418         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
8419                         "2027 Read Config Data : ptv:0x%x, tf:0x%x pt:0x%x",
8420                          ptv, tf, pt);
8421         if (!ptv) {
8422                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
8423                                 "2019 FW does not support persistent topology "
8424                                 "Using driver parameter defined value [%s]",
8425                                 lpfc_topo_to_str[phba->cfg_topology]);
8426                 return;
8427         }
8428         /* FW supports persistent topology - override module parameter value */
8429         phba->hba_flag |= HBA_PERSISTENT_TOPO;
8430         switch (phba->pcidev->device) {
8431         case PCI_DEVICE_ID_LANCER_G7_FC:
8432         case PCI_DEVICE_ID_LANCER_G6_FC:
8433                 if (!tf) {
8434                         phba->cfg_topology = ((pt == LINK_FLAGS_LOOP)
8435                                         ? FLAGS_TOPOLOGY_MODE_LOOP
8436                                         : FLAGS_TOPOLOGY_MODE_PT_PT);
8437                 } else {
8438                         phba->hba_flag &= ~HBA_PERSISTENT_TOPO;
8439                 }
8440                 break;
8441         default:        /* G5 */
8442                 if (tf) {
8443                         /* If topology failover set - pt is '0' or '1' */
8444                         phba->cfg_topology = (pt ? FLAGS_TOPOLOGY_MODE_PT_LOOP :
8445                                               FLAGS_TOPOLOGY_MODE_LOOP_PT);
8446                 } else {
8447                         phba->cfg_topology = ((pt == LINK_FLAGS_P2P)
8448                                         ? FLAGS_TOPOLOGY_MODE_PT_PT
8449                                         : FLAGS_TOPOLOGY_MODE_LOOP);
8450                 }
8451                 break;
8452         }
8453         if (phba->hba_flag & HBA_PERSISTENT_TOPO) {
8454                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
8455                                 "2020 Using persistent topology value [%s]",
8456                                 lpfc_topo_to_str[phba->cfg_topology]);
8457         } else {
8458                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
8459                                 "2021 Invalid topology values from FW "
8460                                 "Using driver parameter defined value [%s]",
8461                                 lpfc_topo_to_str[phba->cfg_topology]);
8462         }
8463 }
8464
8465 /**
8466  * lpfc_sli4_read_config - Get the config parameters.
8467  * @phba: pointer to lpfc hba data structure.
8468  *
8469  * This routine is invoked to read the configuration parameters from the HBA.
8470  * The configuration parameters are used to set the base and maximum values
8471  * for RPI's XRI's VPI's VFI's and FCFIs. These values also affect the resource
8472  * allocation for the port.
8473  *
8474  * Return codes
8475  *      0 - successful
8476  *      -ENOMEM - No available memory
8477  *      -EIO - The mailbox failed to complete successfully.
8478  **/
8479 int
8480 lpfc_sli4_read_config(struct lpfc_hba *phba)
8481 {
8482         LPFC_MBOXQ_t *pmb;
8483         struct lpfc_mbx_read_config *rd_config;
8484         union  lpfc_sli4_cfg_shdr *shdr;
8485         uint32_t shdr_status, shdr_add_status;
8486         struct lpfc_mbx_get_func_cfg *get_func_cfg;
8487         struct lpfc_rsrc_desc_fcfcoe *desc;
8488         char *pdesc_0;
8489         uint16_t forced_link_speed;
8490         uint32_t if_type, qmin;
8491         int length, i, rc = 0, rc2;
8492
8493         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
8494         if (!pmb) {
8495                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8496                                 "2011 Unable to allocate memory for issuing "
8497                                 "SLI_CONFIG_SPECIAL mailbox command\n");
8498                 return -ENOMEM;
8499         }
8500
8501         lpfc_read_config(phba, pmb);
8502
8503         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
8504         if (rc != MBX_SUCCESS) {
8505                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8506                                 "2012 Mailbox failed , mbxCmd x%x "
8507                                 "READ_CONFIG, mbxStatus x%x\n",
8508                                 bf_get(lpfc_mqe_command, &pmb->u.mqe),
8509                                 bf_get(lpfc_mqe_status, &pmb->u.mqe));
8510                 rc = -EIO;
8511         } else {
8512                 rd_config = &pmb->u.mqe.un.rd_config;
8513                 if (bf_get(lpfc_mbx_rd_conf_lnk_ldv, rd_config)) {
8514                         phba->sli4_hba.lnk_info.lnk_dv = LPFC_LNK_DAT_VAL;
8515                         phba->sli4_hba.lnk_info.lnk_tp =
8516                                 bf_get(lpfc_mbx_rd_conf_lnk_type, rd_config);
8517                         phba->sli4_hba.lnk_info.lnk_no =
8518                                 bf_get(lpfc_mbx_rd_conf_lnk_numb, rd_config);
8519                         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
8520                                         "3081 lnk_type:%d, lnk_numb:%d\n",
8521                                         phba->sli4_hba.lnk_info.lnk_tp,
8522                                         phba->sli4_hba.lnk_info.lnk_no);
8523                 } else
8524                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
8525                                         "3082 Mailbox (x%x) returned ldv:x0\n",
8526                                         bf_get(lpfc_mqe_command, &pmb->u.mqe));
8527                 if (bf_get(lpfc_mbx_rd_conf_bbscn_def, rd_config)) {
8528                         phba->bbcredit_support = 1;
8529                         phba->sli4_hba.bbscn_params.word0 = rd_config->word8;
8530                 }
8531
8532                 phba->sli4_hba.conf_trunk =
8533                         bf_get(lpfc_mbx_rd_conf_trunk, rd_config);
8534                 phba->sli4_hba.extents_in_use =
8535                         bf_get(lpfc_mbx_rd_conf_extnts_inuse, rd_config);
8536                 phba->sli4_hba.max_cfg_param.max_xri =
8537                         bf_get(lpfc_mbx_rd_conf_xri_count, rd_config);
8538                 /* Reduce resource usage in kdump environment */
8539                 if (is_kdump_kernel() &&
8540                     phba->sli4_hba.max_cfg_param.max_xri > 512)
8541                         phba->sli4_hba.max_cfg_param.max_xri = 512;
8542                 phba->sli4_hba.max_cfg_param.xri_base =
8543                         bf_get(lpfc_mbx_rd_conf_xri_base, rd_config);
8544                 phba->sli4_hba.max_cfg_param.max_vpi =
8545                         bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config);
8546                 /* Limit the max we support */
8547                 if (phba->sli4_hba.max_cfg_param.max_vpi > LPFC_MAX_VPORTS)
8548                         phba->sli4_hba.max_cfg_param.max_vpi = LPFC_MAX_VPORTS;
8549                 phba->sli4_hba.max_cfg_param.vpi_base =
8550                         bf_get(lpfc_mbx_rd_conf_vpi_base, rd_config);
8551                 phba->sli4_hba.max_cfg_param.max_rpi =
8552                         bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config);
8553                 phba->sli4_hba.max_cfg_param.rpi_base =
8554                         bf_get(lpfc_mbx_rd_conf_rpi_base, rd_config);
8555                 phba->sli4_hba.max_cfg_param.max_vfi =
8556                         bf_get(lpfc_mbx_rd_conf_vfi_count, rd_config);
8557                 phba->sli4_hba.max_cfg_param.vfi_base =
8558                         bf_get(lpfc_mbx_rd_conf_vfi_base, rd_config);
8559                 phba->sli4_hba.max_cfg_param.max_fcfi =
8560                         bf_get(lpfc_mbx_rd_conf_fcfi_count, rd_config);
8561                 phba->sli4_hba.max_cfg_param.max_eq =
8562                         bf_get(lpfc_mbx_rd_conf_eq_count, rd_config);
8563                 phba->sli4_hba.max_cfg_param.max_rq =
8564                         bf_get(lpfc_mbx_rd_conf_rq_count, rd_config);
8565                 phba->sli4_hba.max_cfg_param.max_wq =
8566                         bf_get(lpfc_mbx_rd_conf_wq_count, rd_config);
8567                 phba->sli4_hba.max_cfg_param.max_cq =
8568                         bf_get(lpfc_mbx_rd_conf_cq_count, rd_config);
8569                 phba->lmt = bf_get(lpfc_mbx_rd_conf_lmt, rd_config);
8570                 phba->sli4_hba.next_xri = phba->sli4_hba.max_cfg_param.xri_base;
8571                 phba->vpi_base = phba->sli4_hba.max_cfg_param.vpi_base;
8572                 phba->vfi_base = phba->sli4_hba.max_cfg_param.vfi_base;
8573                 phba->max_vpi = (phba->sli4_hba.max_cfg_param.max_vpi > 0) ?
8574                                 (phba->sli4_hba.max_cfg_param.max_vpi - 1) : 0;
8575                 phba->max_vports = phba->max_vpi;
8576                 lpfc_map_topology(phba, rd_config);
8577                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
8578                                 "2003 cfg params Extents? %d "
8579                                 "XRI(B:%d M:%d), "
8580                                 "VPI(B:%d M:%d) "
8581                                 "VFI(B:%d M:%d) "
8582                                 "RPI(B:%d M:%d) "
8583                                 "FCFI:%d EQ:%d CQ:%d WQ:%d RQ:%d lmt:x%x\n",
8584                                 phba->sli4_hba.extents_in_use,
8585                                 phba->sli4_hba.max_cfg_param.xri_base,
8586                                 phba->sli4_hba.max_cfg_param.max_xri,
8587                                 phba->sli4_hba.max_cfg_param.vpi_base,
8588                                 phba->sli4_hba.max_cfg_param.max_vpi,
8589                                 phba->sli4_hba.max_cfg_param.vfi_base,
8590                                 phba->sli4_hba.max_cfg_param.max_vfi,
8591                                 phba->sli4_hba.max_cfg_param.rpi_base,
8592                                 phba->sli4_hba.max_cfg_param.max_rpi,
8593                                 phba->sli4_hba.max_cfg_param.max_fcfi,
8594                                 phba->sli4_hba.max_cfg_param.max_eq,
8595                                 phba->sli4_hba.max_cfg_param.max_cq,
8596                                 phba->sli4_hba.max_cfg_param.max_wq,
8597                                 phba->sli4_hba.max_cfg_param.max_rq,
8598                                 phba->lmt);
8599
8600                 /*
8601                  * Calculate queue resources based on how
8602                  * many WQ/CQ/EQs are available.
8603                  */
8604                 qmin = phba->sli4_hba.max_cfg_param.max_wq;
8605                 if (phba->sli4_hba.max_cfg_param.max_cq < qmin)
8606                         qmin = phba->sli4_hba.max_cfg_param.max_cq;
8607                 if (phba->sli4_hba.max_cfg_param.max_eq < qmin)
8608                         qmin = phba->sli4_hba.max_cfg_param.max_eq;
8609                 /*
8610                  * Whats left after this can go toward NVME / FCP.
8611                  * The minus 4 accounts for ELS, NVME LS, MBOX
8612                  * plus one extra. When configured for
8613                  * NVMET, FCP io channel WQs are not created.
8614                  */
8615                 qmin -= 4;
8616
8617                 /* Check to see if there is enough for NVME */
8618                 if ((phba->cfg_irq_chann > qmin) ||
8619                     (phba->cfg_hdw_queue > qmin)) {
8620                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8621                                         "2005 Reducing Queues - "
8622                                         "FW resource limitation: "
8623                                         "WQ %d CQ %d EQ %d: min %d: "
8624                                         "IRQ %d HDWQ %d\n",
8625                                         phba->sli4_hba.max_cfg_param.max_wq,
8626                                         phba->sli4_hba.max_cfg_param.max_cq,
8627                                         phba->sli4_hba.max_cfg_param.max_eq,
8628                                         qmin, phba->cfg_irq_chann,
8629                                         phba->cfg_hdw_queue);
8630
8631                         if (phba->cfg_irq_chann > qmin)
8632                                 phba->cfg_irq_chann = qmin;
8633                         if (phba->cfg_hdw_queue > qmin)
8634                                 phba->cfg_hdw_queue = qmin;
8635                 }
8636         }
8637
8638         if (rc)
8639                 goto read_cfg_out;
8640
8641         /* Update link speed if forced link speed is supported */
8642         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
8643         if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
8644                 forced_link_speed =
8645                         bf_get(lpfc_mbx_rd_conf_link_speed, rd_config);
8646                 if (forced_link_speed) {
8647                         phba->hba_flag |= HBA_FORCED_LINK_SPEED;
8648
8649                         switch (forced_link_speed) {
8650                         case LINK_SPEED_1G:
8651                                 phba->cfg_link_speed =
8652                                         LPFC_USER_LINK_SPEED_1G;
8653                                 break;
8654                         case LINK_SPEED_2G:
8655                                 phba->cfg_link_speed =
8656                                         LPFC_USER_LINK_SPEED_2G;
8657                                 break;
8658                         case LINK_SPEED_4G:
8659                                 phba->cfg_link_speed =
8660                                         LPFC_USER_LINK_SPEED_4G;
8661                                 break;
8662                         case LINK_SPEED_8G:
8663                                 phba->cfg_link_speed =
8664                                         LPFC_USER_LINK_SPEED_8G;
8665                                 break;
8666                         case LINK_SPEED_10G:
8667                                 phba->cfg_link_speed =
8668                                         LPFC_USER_LINK_SPEED_10G;
8669                                 break;
8670                         case LINK_SPEED_16G:
8671                                 phba->cfg_link_speed =
8672                                         LPFC_USER_LINK_SPEED_16G;
8673                                 break;
8674                         case LINK_SPEED_32G:
8675                                 phba->cfg_link_speed =
8676                                         LPFC_USER_LINK_SPEED_32G;
8677                                 break;
8678                         case LINK_SPEED_64G:
8679                                 phba->cfg_link_speed =
8680                                         LPFC_USER_LINK_SPEED_64G;
8681                                 break;
8682                         case 0xffff:
8683                                 phba->cfg_link_speed =
8684                                         LPFC_USER_LINK_SPEED_AUTO;
8685                                 break;
8686                         default:
8687                                 lpfc_printf_log(phba, KERN_ERR,
8688                                                 LOG_TRACE_EVENT,
8689                                                 "0047 Unrecognized link "
8690                                                 "speed : %d\n",
8691                                                 forced_link_speed);
8692                                 phba->cfg_link_speed =
8693                                         LPFC_USER_LINK_SPEED_AUTO;
8694                         }
8695                 }
8696         }
8697
8698         /* Reset the DFT_HBA_Q_DEPTH to the max xri  */
8699         length = phba->sli4_hba.max_cfg_param.max_xri -
8700                         lpfc_sli4_get_els_iocb_cnt(phba);
8701         if (phba->cfg_hba_queue_depth > length) {
8702                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
8703                                 "3361 HBA queue depth changed from %d to %d\n",
8704                                 phba->cfg_hba_queue_depth, length);
8705                 phba->cfg_hba_queue_depth = length;
8706         }
8707
8708         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
8709             LPFC_SLI_INTF_IF_TYPE_2)
8710                 goto read_cfg_out;
8711
8712         /* get the pf# and vf# for SLI4 if_type 2 port */
8713         length = (sizeof(struct lpfc_mbx_get_func_cfg) -
8714                   sizeof(struct lpfc_sli4_cfg_mhdr));
8715         lpfc_sli4_config(phba, pmb, LPFC_MBOX_SUBSYSTEM_COMMON,
8716                          LPFC_MBOX_OPCODE_GET_FUNCTION_CONFIG,
8717                          length, LPFC_SLI4_MBX_EMBED);
8718
8719         rc2 = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
8720         shdr = (union lpfc_sli4_cfg_shdr *)
8721                                 &pmb->u.mqe.un.sli4_config.header.cfg_shdr;
8722         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
8723         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
8724         if (rc2 || shdr_status || shdr_add_status) {
8725                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8726                                 "3026 Mailbox failed , mbxCmd x%x "
8727                                 "GET_FUNCTION_CONFIG, mbxStatus x%x\n",
8728                                 bf_get(lpfc_mqe_command, &pmb->u.mqe),
8729                                 bf_get(lpfc_mqe_status, &pmb->u.mqe));
8730                 goto read_cfg_out;
8731         }
8732
8733         /* search for fc_fcoe resrouce descriptor */
8734         get_func_cfg = &pmb->u.mqe.un.get_func_cfg;
8735
8736         pdesc_0 = (char *)&get_func_cfg->func_cfg.desc[0];
8737         desc = (struct lpfc_rsrc_desc_fcfcoe *)pdesc_0;
8738         length = bf_get(lpfc_rsrc_desc_fcfcoe_length, desc);
8739         if (length == LPFC_RSRC_DESC_TYPE_FCFCOE_V0_RSVD)
8740                 length = LPFC_RSRC_DESC_TYPE_FCFCOE_V0_LENGTH;
8741         else if (length != LPFC_RSRC_DESC_TYPE_FCFCOE_V1_LENGTH)
8742                 goto read_cfg_out;
8743
8744         for (i = 0; i < LPFC_RSRC_DESC_MAX_NUM; i++) {
8745                 desc = (struct lpfc_rsrc_desc_fcfcoe *)(pdesc_0 + length * i);
8746                 if (LPFC_RSRC_DESC_TYPE_FCFCOE ==
8747                     bf_get(lpfc_rsrc_desc_fcfcoe_type, desc)) {
8748                         phba->sli4_hba.iov.pf_number =
8749                                 bf_get(lpfc_rsrc_desc_fcfcoe_pfnum, desc);
8750                         phba->sli4_hba.iov.vf_number =
8751                                 bf_get(lpfc_rsrc_desc_fcfcoe_vfnum, desc);
8752                         break;
8753                 }
8754         }
8755
8756         if (i < LPFC_RSRC_DESC_MAX_NUM)
8757                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
8758                                 "3027 GET_FUNCTION_CONFIG: pf_number:%d, "
8759                                 "vf_number:%d\n", phba->sli4_hba.iov.pf_number,
8760                                 phba->sli4_hba.iov.vf_number);
8761         else
8762                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8763                                 "3028 GET_FUNCTION_CONFIG: failed to find "
8764                                 "Resource Descriptor:x%x\n",
8765                                 LPFC_RSRC_DESC_TYPE_FCFCOE);
8766
8767 read_cfg_out:
8768         mempool_free(pmb, phba->mbox_mem_pool);
8769         return rc;
8770 }
8771
8772 /**
8773  * lpfc_setup_endian_order - Write endian order to an SLI4 if_type 0 port.
8774  * @phba: pointer to lpfc hba data structure.
8775  *
8776  * This routine is invoked to setup the port-side endian order when
8777  * the port if_type is 0.  This routine has no function for other
8778  * if_types.
8779  *
8780  * Return codes
8781  *      0 - successful
8782  *      -ENOMEM - No available memory
8783  *      -EIO - The mailbox failed to complete successfully.
8784  **/
8785 static int
8786 lpfc_setup_endian_order(struct lpfc_hba *phba)
8787 {
8788         LPFC_MBOXQ_t *mboxq;
8789         uint32_t if_type, rc = 0;
8790         uint32_t endian_mb_data[2] = {HOST_ENDIAN_LOW_WORD0,
8791                                       HOST_ENDIAN_HIGH_WORD1};
8792
8793         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
8794         switch (if_type) {
8795         case LPFC_SLI_INTF_IF_TYPE_0:
8796                 mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
8797                                                        GFP_KERNEL);
8798                 if (!mboxq) {
8799                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8800                                         "0492 Unable to allocate memory for "
8801                                         "issuing SLI_CONFIG_SPECIAL mailbox "
8802                                         "command\n");
8803                         return -ENOMEM;
8804                 }
8805
8806                 /*
8807                  * The SLI4_CONFIG_SPECIAL mailbox command requires the first
8808                  * two words to contain special data values and no other data.
8809                  */
8810                 memset(mboxq, 0, sizeof(LPFC_MBOXQ_t));
8811                 memcpy(&mboxq->u.mqe, &endian_mb_data, sizeof(endian_mb_data));
8812                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
8813                 if (rc != MBX_SUCCESS) {
8814                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8815                                         "0493 SLI_CONFIG_SPECIAL mailbox "
8816                                         "failed with status x%x\n",
8817                                         rc);
8818                         rc = -EIO;
8819                 }
8820                 mempool_free(mboxq, phba->mbox_mem_pool);
8821                 break;
8822         case LPFC_SLI_INTF_IF_TYPE_6:
8823         case LPFC_SLI_INTF_IF_TYPE_2:
8824         case LPFC_SLI_INTF_IF_TYPE_1:
8825         default:
8826                 break;
8827         }
8828         return rc;
8829 }
8830
8831 /**
8832  * lpfc_sli4_queue_verify - Verify and update EQ counts
8833  * @phba: pointer to lpfc hba data structure.
8834  *
8835  * This routine is invoked to check the user settable queue counts for EQs.
8836  * After this routine is called the counts will be set to valid values that
8837  * adhere to the constraints of the system's interrupt vectors and the port's
8838  * queue resources.
8839  *
8840  * Return codes
8841  *      0 - successful
8842  *      -ENOMEM - No available memory
8843  **/
8844 static int
8845 lpfc_sli4_queue_verify(struct lpfc_hba *phba)
8846 {
8847         /*
8848          * Sanity check for configured queue parameters against the run-time
8849          * device parameters
8850          */
8851
8852         if (phba->nvmet_support) {
8853                 if (phba->cfg_hdw_queue < phba->cfg_nvmet_mrq)
8854                         phba->cfg_nvmet_mrq = phba->cfg_hdw_queue;
8855                 if (phba->cfg_nvmet_mrq > LPFC_NVMET_MRQ_MAX)
8856                         phba->cfg_nvmet_mrq = LPFC_NVMET_MRQ_MAX;
8857         }
8858
8859         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8860                         "2574 IO channels: hdwQ %d IRQ %d MRQ: %d\n",
8861                         phba->cfg_hdw_queue, phba->cfg_irq_chann,
8862                         phba->cfg_nvmet_mrq);
8863
8864         /* Get EQ depth from module parameter, fake the default for now */
8865         phba->sli4_hba.eq_esize = LPFC_EQE_SIZE_4B;
8866         phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT;
8867
8868         /* Get CQ depth from module parameter, fake the default for now */
8869         phba->sli4_hba.cq_esize = LPFC_CQE_SIZE;
8870         phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT;
8871         return 0;
8872 }
8873
8874 static int
8875 lpfc_alloc_io_wq_cq(struct lpfc_hba *phba, int idx)
8876 {
8877         struct lpfc_queue *qdesc;
8878         u32 wqesize;
8879         int cpu;
8880
8881         cpu = lpfc_find_cpu_handle(phba, idx, LPFC_FIND_BY_HDWQ);
8882         /* Create Fast Path IO CQs */
8883         if (phba->enab_exp_wqcq_pages)
8884                 /* Increase the CQ size when WQEs contain an embedded cdb */
8885                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_EXPANDED_PAGE_SIZE,
8886                                               phba->sli4_hba.cq_esize,
8887                                               LPFC_CQE_EXP_COUNT, cpu);
8888
8889         else
8890                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
8891                                               phba->sli4_hba.cq_esize,
8892                                               phba->sli4_hba.cq_ecount, cpu);
8893         if (!qdesc) {
8894                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8895                                 "0499 Failed allocate fast-path IO CQ (%d)\n",
8896                                 idx);
8897                 return 1;
8898         }
8899         qdesc->qe_valid = 1;
8900         qdesc->hdwq = idx;
8901         qdesc->chann = cpu;
8902         phba->sli4_hba.hdwq[idx].io_cq = qdesc;
8903
8904         /* Create Fast Path IO WQs */
8905         if (phba->enab_exp_wqcq_pages) {
8906                 /* Increase the WQ size when WQEs contain an embedded cdb */
8907                 wqesize = (phba->fcp_embed_io) ?
8908                         LPFC_WQE128_SIZE : phba->sli4_hba.wq_esize;
8909                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_EXPANDED_PAGE_SIZE,
8910                                               wqesize,
8911                                               LPFC_WQE_EXP_COUNT, cpu);
8912         } else
8913                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
8914                                               phba->sli4_hba.wq_esize,
8915                                               phba->sli4_hba.wq_ecount, cpu);
8916
8917         if (!qdesc) {
8918                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8919                                 "0503 Failed allocate fast-path IO WQ (%d)\n",
8920                                 idx);
8921                 return 1;
8922         }
8923         qdesc->hdwq = idx;
8924         qdesc->chann = cpu;
8925         phba->sli4_hba.hdwq[idx].io_wq = qdesc;
8926         list_add_tail(&qdesc->wq_list, &phba->sli4_hba.lpfc_wq_list);
8927         return 0;
8928 }
8929
8930 /**
8931  * lpfc_sli4_queue_create - Create all the SLI4 queues
8932  * @phba: pointer to lpfc hba data structure.
8933  *
8934  * This routine is invoked to allocate all the SLI4 queues for the FCoE HBA
8935  * operation. For each SLI4 queue type, the parameters such as queue entry
8936  * count (queue depth) shall be taken from the module parameter. For now,
8937  * we just use some constant number as place holder.
8938  *
8939  * Return codes
8940  *      0 - successful
8941  *      -ENOMEM - No availble memory
8942  *      -EIO - The mailbox failed to complete successfully.
8943  **/
8944 int
8945 lpfc_sli4_queue_create(struct lpfc_hba *phba)
8946 {
8947         struct lpfc_queue *qdesc;
8948         int idx, cpu, eqcpu;
8949         struct lpfc_sli4_hdw_queue *qp;
8950         struct lpfc_vector_map_info *cpup;
8951         struct lpfc_vector_map_info *eqcpup;
8952         struct lpfc_eq_intr_info *eqi;
8953
8954         /*
8955          * Create HBA Record arrays.
8956          * Both NVME and FCP will share that same vectors / EQs
8957          */
8958         phba->sli4_hba.mq_esize = LPFC_MQE_SIZE;
8959         phba->sli4_hba.mq_ecount = LPFC_MQE_DEF_COUNT;
8960         phba->sli4_hba.wq_esize = LPFC_WQE_SIZE;
8961         phba->sli4_hba.wq_ecount = LPFC_WQE_DEF_COUNT;
8962         phba->sli4_hba.rq_esize = LPFC_RQE_SIZE;
8963         phba->sli4_hba.rq_ecount = LPFC_RQE_DEF_COUNT;
8964         phba->sli4_hba.eq_esize = LPFC_EQE_SIZE_4B;
8965         phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT;
8966         phba->sli4_hba.cq_esize = LPFC_CQE_SIZE;
8967         phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT;
8968
8969         if (!phba->sli4_hba.hdwq) {
8970                 phba->sli4_hba.hdwq = kcalloc(
8971                         phba->cfg_hdw_queue, sizeof(struct lpfc_sli4_hdw_queue),
8972                         GFP_KERNEL);
8973                 if (!phba->sli4_hba.hdwq) {
8974                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8975                                         "6427 Failed allocate memory for "
8976                                         "fast-path Hardware Queue array\n");
8977                         goto out_error;
8978                 }
8979                 /* Prepare hardware queues to take IO buffers */
8980                 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
8981                         qp = &phba->sli4_hba.hdwq[idx];
8982                         spin_lock_init(&qp->io_buf_list_get_lock);
8983                         spin_lock_init(&qp->io_buf_list_put_lock);
8984                         INIT_LIST_HEAD(&qp->lpfc_io_buf_list_get);
8985                         INIT_LIST_HEAD(&qp->lpfc_io_buf_list_put);
8986                         qp->get_io_bufs = 0;
8987                         qp->put_io_bufs = 0;
8988                         qp->total_io_bufs = 0;
8989                         spin_lock_init(&qp->abts_io_buf_list_lock);
8990                         INIT_LIST_HEAD(&qp->lpfc_abts_io_buf_list);
8991                         qp->abts_scsi_io_bufs = 0;
8992                         qp->abts_nvme_io_bufs = 0;
8993                         INIT_LIST_HEAD(&qp->sgl_list);
8994                         INIT_LIST_HEAD(&qp->cmd_rsp_buf_list);
8995                         spin_lock_init(&qp->hdwq_lock);
8996                 }
8997         }
8998
8999         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
9000                 if (phba->nvmet_support) {
9001                         phba->sli4_hba.nvmet_cqset = kcalloc(
9002                                         phba->cfg_nvmet_mrq,
9003                                         sizeof(struct lpfc_queue *),
9004                                         GFP_KERNEL);
9005                         if (!phba->sli4_hba.nvmet_cqset) {
9006                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9007                                         "3121 Fail allocate memory for "
9008                                         "fast-path CQ set array\n");
9009                                 goto out_error;
9010                         }
9011                         phba->sli4_hba.nvmet_mrq_hdr = kcalloc(
9012                                         phba->cfg_nvmet_mrq,
9013                                         sizeof(struct lpfc_queue *),
9014                                         GFP_KERNEL);
9015                         if (!phba->sli4_hba.nvmet_mrq_hdr) {
9016                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9017                                         "3122 Fail allocate memory for "
9018                                         "fast-path RQ set hdr array\n");
9019                                 goto out_error;
9020                         }
9021                         phba->sli4_hba.nvmet_mrq_data = kcalloc(
9022                                         phba->cfg_nvmet_mrq,
9023                                         sizeof(struct lpfc_queue *),
9024                                         GFP_KERNEL);
9025                         if (!phba->sli4_hba.nvmet_mrq_data) {
9026                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9027                                         "3124 Fail allocate memory for "
9028                                         "fast-path RQ set data array\n");
9029                                 goto out_error;
9030                         }
9031                 }
9032         }
9033
9034         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_wq_list);
9035
9036         /* Create HBA Event Queues (EQs) */
9037         for_each_present_cpu(cpu) {
9038                 /* We only want to create 1 EQ per vector, even though
9039                  * multiple CPUs might be using that vector. so only
9040                  * selects the CPUs that are LPFC_CPU_FIRST_IRQ.
9041                  */
9042                 cpup = &phba->sli4_hba.cpu_map[cpu];
9043                 if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
9044                         continue;
9045
9046                 /* Get a ptr to the Hardware Queue associated with this CPU */
9047                 qp = &phba->sli4_hba.hdwq[cpup->hdwq];
9048
9049                 /* Allocate an EQ */
9050                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9051                                               phba->sli4_hba.eq_esize,
9052                                               phba->sli4_hba.eq_ecount, cpu);
9053                 if (!qdesc) {
9054                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9055                                         "0497 Failed allocate EQ (%d)\n",
9056                                         cpup->hdwq);
9057                         goto out_error;
9058                 }
9059                 qdesc->qe_valid = 1;
9060                 qdesc->hdwq = cpup->hdwq;
9061                 qdesc->chann = cpu; /* First CPU this EQ is affinitized to */
9062                 qdesc->last_cpu = qdesc->chann;
9063
9064                 /* Save the allocated EQ in the Hardware Queue */
9065                 qp->hba_eq = qdesc;
9066
9067                 eqi = per_cpu_ptr(phba->sli4_hba.eq_info, qdesc->last_cpu);
9068                 list_add(&qdesc->cpu_list, &eqi->list);
9069         }
9070
9071         /* Now we need to populate the other Hardware Queues, that share
9072          * an IRQ vector, with the associated EQ ptr.
9073          */
9074         for_each_present_cpu(cpu) {
9075                 cpup = &phba->sli4_hba.cpu_map[cpu];
9076
9077                 /* Check for EQ already allocated in previous loop */
9078                 if (cpup->flag & LPFC_CPU_FIRST_IRQ)
9079                         continue;
9080
9081                 /* Check for multiple CPUs per hdwq */
9082                 qp = &phba->sli4_hba.hdwq[cpup->hdwq];
9083                 if (qp->hba_eq)
9084                         continue;
9085
9086                 /* We need to share an EQ for this hdwq */
9087                 eqcpu = lpfc_find_cpu_handle(phba, cpup->eq, LPFC_FIND_BY_EQ);
9088                 eqcpup = &phba->sli4_hba.cpu_map[eqcpu];
9089                 qp->hba_eq = phba->sli4_hba.hdwq[eqcpup->hdwq].hba_eq;
9090         }
9091
9092         /* Allocate IO Path SLI4 CQ/WQs */
9093         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
9094                 if (lpfc_alloc_io_wq_cq(phba, idx))
9095                         goto out_error;
9096         }
9097
9098         if (phba->nvmet_support) {
9099                 for (idx = 0; idx < phba->cfg_nvmet_mrq; idx++) {
9100                         cpu = lpfc_find_cpu_handle(phba, idx,
9101                                                    LPFC_FIND_BY_HDWQ);
9102                         qdesc = lpfc_sli4_queue_alloc(phba,
9103                                                       LPFC_DEFAULT_PAGE_SIZE,
9104                                                       phba->sli4_hba.cq_esize,
9105                                                       phba->sli4_hba.cq_ecount,
9106                                                       cpu);
9107                         if (!qdesc) {
9108                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9109                                                 "3142 Failed allocate NVME "
9110                                                 "CQ Set (%d)\n", idx);
9111                                 goto out_error;
9112                         }
9113                         qdesc->qe_valid = 1;
9114                         qdesc->hdwq = idx;
9115                         qdesc->chann = cpu;
9116                         phba->sli4_hba.nvmet_cqset[idx] = qdesc;
9117                 }
9118         }
9119
9120         /*
9121          * Create Slow Path Completion Queues (CQs)
9122          */
9123
9124         cpu = lpfc_find_cpu_handle(phba, 0, LPFC_FIND_BY_EQ);
9125         /* Create slow-path Mailbox Command Complete Queue */
9126         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9127                                       phba->sli4_hba.cq_esize,
9128                                       phba->sli4_hba.cq_ecount, cpu);
9129         if (!qdesc) {
9130                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9131                                 "0500 Failed allocate slow-path mailbox CQ\n");
9132                 goto out_error;
9133         }
9134         qdesc->qe_valid = 1;
9135         phba->sli4_hba.mbx_cq = qdesc;
9136
9137         /* Create slow-path ELS Complete Queue */
9138         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9139                                       phba->sli4_hba.cq_esize,
9140                                       phba->sli4_hba.cq_ecount, cpu);
9141         if (!qdesc) {
9142                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9143                                 "0501 Failed allocate slow-path ELS CQ\n");
9144                 goto out_error;
9145         }
9146         qdesc->qe_valid = 1;
9147         qdesc->chann = cpu;
9148         phba->sli4_hba.els_cq = qdesc;
9149
9150
9151         /*
9152          * Create Slow Path Work Queues (WQs)
9153          */
9154
9155         /* Create Mailbox Command Queue */
9156
9157         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9158                                       phba->sli4_hba.mq_esize,
9159                                       phba->sli4_hba.mq_ecount, cpu);
9160         if (!qdesc) {
9161                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9162                                 "0505 Failed allocate slow-path MQ\n");
9163                 goto out_error;
9164         }
9165         qdesc->chann = cpu;
9166         phba->sli4_hba.mbx_wq = qdesc;
9167
9168         /*
9169          * Create ELS Work Queues
9170          */
9171
9172         /* Create slow-path ELS Work Queue */
9173         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9174                                       phba->sli4_hba.wq_esize,
9175                                       phba->sli4_hba.wq_ecount, cpu);
9176         if (!qdesc) {
9177                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9178                                 "0504 Failed allocate slow-path ELS WQ\n");
9179                 goto out_error;
9180         }
9181         qdesc->chann = cpu;
9182         phba->sli4_hba.els_wq = qdesc;
9183         list_add_tail(&qdesc->wq_list, &phba->sli4_hba.lpfc_wq_list);
9184
9185         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
9186                 /* Create NVME LS Complete Queue */
9187                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9188                                               phba->sli4_hba.cq_esize,
9189                                               phba->sli4_hba.cq_ecount, cpu);
9190                 if (!qdesc) {
9191                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9192                                         "6079 Failed allocate NVME LS CQ\n");
9193                         goto out_error;
9194                 }
9195                 qdesc->chann = cpu;
9196                 qdesc->qe_valid = 1;
9197                 phba->sli4_hba.nvmels_cq = qdesc;
9198
9199                 /* Create NVME LS Work Queue */
9200                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9201                                               phba->sli4_hba.wq_esize,
9202                                               phba->sli4_hba.wq_ecount, cpu);
9203                 if (!qdesc) {
9204                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9205                                         "6080 Failed allocate NVME LS WQ\n");
9206                         goto out_error;
9207                 }
9208                 qdesc->chann = cpu;
9209                 phba->sli4_hba.nvmels_wq = qdesc;
9210                 list_add_tail(&qdesc->wq_list, &phba->sli4_hba.lpfc_wq_list);
9211         }
9212
9213         /*
9214          * Create Receive Queue (RQ)
9215          */
9216
9217         /* Create Receive Queue for header */
9218         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9219                                       phba->sli4_hba.rq_esize,
9220                                       phba->sli4_hba.rq_ecount, cpu);
9221         if (!qdesc) {
9222                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9223                                 "0506 Failed allocate receive HRQ\n");
9224                 goto out_error;
9225         }
9226         phba->sli4_hba.hdr_rq = qdesc;
9227
9228         /* Create Receive Queue for data */
9229         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9230                                       phba->sli4_hba.rq_esize,
9231                                       phba->sli4_hba.rq_ecount, cpu);
9232         if (!qdesc) {
9233                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9234                                 "0507 Failed allocate receive DRQ\n");
9235                 goto out_error;
9236         }
9237         phba->sli4_hba.dat_rq = qdesc;
9238
9239         if ((phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) &&
9240             phba->nvmet_support) {
9241                 for (idx = 0; idx < phba->cfg_nvmet_mrq; idx++) {
9242                         cpu = lpfc_find_cpu_handle(phba, idx,
9243                                                    LPFC_FIND_BY_HDWQ);
9244                         /* Create NVMET Receive Queue for header */
9245                         qdesc = lpfc_sli4_queue_alloc(phba,
9246                                                       LPFC_DEFAULT_PAGE_SIZE,
9247                                                       phba->sli4_hba.rq_esize,
9248                                                       LPFC_NVMET_RQE_DEF_COUNT,
9249                                                       cpu);
9250                         if (!qdesc) {
9251                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9252                                                 "3146 Failed allocate "
9253                                                 "receive HRQ\n");
9254                                 goto out_error;
9255                         }
9256                         qdesc->hdwq = idx;
9257                         phba->sli4_hba.nvmet_mrq_hdr[idx] = qdesc;
9258
9259                         /* Only needed for header of RQ pair */
9260                         qdesc->rqbp = kzalloc_node(sizeof(*qdesc->rqbp),
9261                                                    GFP_KERNEL,
9262                                                    cpu_to_node(cpu));
9263                         if (qdesc->rqbp == NULL) {
9264                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9265                                                 "6131 Failed allocate "
9266                                                 "Header RQBP\n");
9267                                 goto out_error;
9268                         }
9269
9270                         /* Put list in known state in case driver load fails. */
9271                         INIT_LIST_HEAD(&qdesc->rqbp->rqb_buffer_list);
9272
9273                         /* Create NVMET Receive Queue for data */
9274                         qdesc = lpfc_sli4_queue_alloc(phba,
9275                                                       LPFC_DEFAULT_PAGE_SIZE,
9276                                                       phba->sli4_hba.rq_esize,
9277                                                       LPFC_NVMET_RQE_DEF_COUNT,
9278                                                       cpu);
9279                         if (!qdesc) {
9280                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9281                                                 "3156 Failed allocate "
9282                                                 "receive DRQ\n");
9283                                 goto out_error;
9284                         }
9285                         qdesc->hdwq = idx;
9286                         phba->sli4_hba.nvmet_mrq_data[idx] = qdesc;
9287                 }
9288         }
9289
9290         /* Clear NVME stats */
9291         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
9292                 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
9293                         memset(&phba->sli4_hba.hdwq[idx].nvme_cstat, 0,
9294                                sizeof(phba->sli4_hba.hdwq[idx].nvme_cstat));
9295                 }
9296         }
9297
9298         /* Clear SCSI stats */
9299         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) {
9300                 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
9301                         memset(&phba->sli4_hba.hdwq[idx].scsi_cstat, 0,
9302                                sizeof(phba->sli4_hba.hdwq[idx].scsi_cstat));
9303                 }
9304         }
9305
9306         return 0;
9307
9308 out_error:
9309         lpfc_sli4_queue_destroy(phba);
9310         return -ENOMEM;
9311 }
9312
9313 static inline void
9314 __lpfc_sli4_release_queue(struct lpfc_queue **qp)
9315 {
9316         if (*qp != NULL) {
9317                 lpfc_sli4_queue_free(*qp);
9318                 *qp = NULL;
9319         }
9320 }
9321
9322 static inline void
9323 lpfc_sli4_release_queues(struct lpfc_queue ***qs, int max)
9324 {
9325         int idx;
9326
9327         if (*qs == NULL)
9328                 return;
9329
9330         for (idx = 0; idx < max; idx++)
9331                 __lpfc_sli4_release_queue(&(*qs)[idx]);
9332
9333         kfree(*qs);
9334         *qs = NULL;
9335 }
9336
9337 static inline void
9338 lpfc_sli4_release_hdwq(struct lpfc_hba *phba)
9339 {
9340         struct lpfc_sli4_hdw_queue *hdwq;
9341         struct lpfc_queue *eq;
9342         uint32_t idx;
9343
9344         hdwq = phba->sli4_hba.hdwq;
9345
9346         /* Loop thru all Hardware Queues */
9347         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
9348                 /* Free the CQ/WQ corresponding to the Hardware Queue */
9349                 lpfc_sli4_queue_free(hdwq[idx].io_cq);
9350                 lpfc_sli4_queue_free(hdwq[idx].io_wq);
9351                 hdwq[idx].hba_eq = NULL;
9352                 hdwq[idx].io_cq = NULL;
9353                 hdwq[idx].io_wq = NULL;
9354                 if (phba->cfg_xpsgl && !phba->nvmet_support)
9355                         lpfc_free_sgl_per_hdwq(phba, &hdwq[idx]);
9356                 lpfc_free_cmd_rsp_buf_per_hdwq(phba, &hdwq[idx]);
9357         }
9358         /* Loop thru all IRQ vectors */
9359         for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
9360                 /* Free the EQ corresponding to the IRQ vector */
9361                 eq = phba->sli4_hba.hba_eq_hdl[idx].eq;
9362                 lpfc_sli4_queue_free(eq);
9363                 phba->sli4_hba.hba_eq_hdl[idx].eq = NULL;
9364         }
9365 }
9366
9367 /**
9368  * lpfc_sli4_queue_destroy - Destroy all the SLI4 queues
9369  * @phba: pointer to lpfc hba data structure.
9370  *
9371  * This routine is invoked to release all the SLI4 queues with the FCoE HBA
9372  * operation.
9373  *
9374  * Return codes
9375  *      0 - successful
9376  *      -ENOMEM - No available memory
9377  *      -EIO - The mailbox failed to complete successfully.
9378  **/
9379 void
9380 lpfc_sli4_queue_destroy(struct lpfc_hba *phba)
9381 {
9382         /*
9383          * Set FREE_INIT before beginning to free the queues.
9384          * Wait until the users of queues to acknowledge to
9385          * release queues by clearing FREE_WAIT.
9386          */
9387         spin_lock_irq(&phba->hbalock);
9388         phba->sli.sli_flag |= LPFC_QUEUE_FREE_INIT;
9389         while (phba->sli.sli_flag & LPFC_QUEUE_FREE_WAIT) {
9390                 spin_unlock_irq(&phba->hbalock);
9391                 msleep(20);
9392                 spin_lock_irq(&phba->hbalock);
9393         }
9394         spin_unlock_irq(&phba->hbalock);
9395
9396         lpfc_sli4_cleanup_poll_list(phba);
9397
9398         /* Release HBA eqs */
9399         if (phba->sli4_hba.hdwq)
9400                 lpfc_sli4_release_hdwq(phba);
9401
9402         if (phba->nvmet_support) {
9403                 lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_cqset,
9404                                          phba->cfg_nvmet_mrq);
9405
9406                 lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_mrq_hdr,
9407                                          phba->cfg_nvmet_mrq);
9408                 lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_mrq_data,
9409                                          phba->cfg_nvmet_mrq);
9410         }
9411
9412         /* Release mailbox command work queue */
9413         __lpfc_sli4_release_queue(&phba->sli4_hba.mbx_wq);
9414
9415         /* Release ELS work queue */
9416         __lpfc_sli4_release_queue(&phba->sli4_hba.els_wq);
9417
9418         /* Release ELS work queue */
9419         __lpfc_sli4_release_queue(&phba->sli4_hba.nvmels_wq);
9420
9421         /* Release unsolicited receive queue */
9422         __lpfc_sli4_release_queue(&phba->sli4_hba.hdr_rq);
9423         __lpfc_sli4_release_queue(&phba->sli4_hba.dat_rq);
9424
9425         /* Release ELS complete queue */
9426         __lpfc_sli4_release_queue(&phba->sli4_hba.els_cq);
9427
9428         /* Release NVME LS complete queue */
9429         __lpfc_sli4_release_queue(&phba->sli4_hba.nvmels_cq);
9430
9431         /* Release mailbox command complete queue */
9432         __lpfc_sli4_release_queue(&phba->sli4_hba.mbx_cq);
9433
9434         /* Everything on this list has been freed */
9435         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_wq_list);
9436
9437         /* Done with freeing the queues */
9438         spin_lock_irq(&phba->hbalock);
9439         phba->sli.sli_flag &= ~LPFC_QUEUE_FREE_INIT;
9440         spin_unlock_irq(&phba->hbalock);
9441 }
9442
9443 int
9444 lpfc_free_rq_buffer(struct lpfc_hba *phba, struct lpfc_queue *rq)
9445 {
9446         struct lpfc_rqb *rqbp;
9447         struct lpfc_dmabuf *h_buf;
9448         struct rqb_dmabuf *rqb_buffer;
9449
9450         rqbp = rq->rqbp;
9451         while (!list_empty(&rqbp->rqb_buffer_list)) {
9452                 list_remove_head(&rqbp->rqb_buffer_list, h_buf,
9453                                  struct lpfc_dmabuf, list);
9454
9455                 rqb_buffer = container_of(h_buf, struct rqb_dmabuf, hbuf);
9456                 (rqbp->rqb_free_buffer)(phba, rqb_buffer);
9457                 rqbp->buffer_count--;
9458         }
9459         return 1;
9460 }
9461
9462 static int
9463 lpfc_create_wq_cq(struct lpfc_hba *phba, struct lpfc_queue *eq,
9464         struct lpfc_queue *cq, struct lpfc_queue *wq, uint16_t *cq_map,
9465         int qidx, uint32_t qtype)
9466 {
9467         struct lpfc_sli_ring *pring;
9468         int rc;
9469
9470         if (!eq || !cq || !wq) {
9471                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9472                         "6085 Fast-path %s (%d) not allocated\n",
9473                         ((eq) ? ((cq) ? "WQ" : "CQ") : "EQ"), qidx);
9474                 return -ENOMEM;
9475         }
9476
9477         /* create the Cq first */
9478         rc = lpfc_cq_create(phba, cq, eq,
9479                         (qtype == LPFC_MBOX) ? LPFC_MCQ : LPFC_WCQ, qtype);
9480         if (rc) {
9481                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9482                                 "6086 Failed setup of CQ (%d), rc = 0x%x\n",
9483                                 qidx, (uint32_t)rc);
9484                 return rc;
9485         }
9486
9487         if (qtype != LPFC_MBOX) {
9488                 /* Setup cq_map for fast lookup */
9489                 if (cq_map)
9490                         *cq_map = cq->queue_id;
9491
9492                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9493                         "6087 CQ setup: cq[%d]-id=%d, parent eq[%d]-id=%d\n",
9494                         qidx, cq->queue_id, qidx, eq->queue_id);
9495
9496                 /* create the wq */
9497                 rc = lpfc_wq_create(phba, wq, cq, qtype);
9498                 if (rc) {
9499                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9500                                 "4618 Fail setup fastpath WQ (%d), rc = 0x%x\n",
9501                                 qidx, (uint32_t)rc);
9502                         /* no need to tear down cq - caller will do so */
9503                         return rc;
9504                 }
9505
9506                 /* Bind this CQ/WQ to the NVME ring */
9507                 pring = wq->pring;
9508                 pring->sli.sli4.wqp = (void *)wq;
9509                 cq->pring = pring;
9510
9511                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9512                         "2593 WQ setup: wq[%d]-id=%d assoc=%d, cq[%d]-id=%d\n",
9513                         qidx, wq->queue_id, wq->assoc_qid, qidx, cq->queue_id);
9514         } else {
9515                 rc = lpfc_mq_create(phba, wq, cq, LPFC_MBOX);
9516                 if (rc) {
9517                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9518                                         "0539 Failed setup of slow-path MQ: "
9519                                         "rc = 0x%x\n", rc);
9520                         /* no need to tear down cq - caller will do so */
9521                         return rc;
9522                 }
9523
9524                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9525                         "2589 MBX MQ setup: wq-id=%d, parent cq-id=%d\n",
9526                         phba->sli4_hba.mbx_wq->queue_id,
9527                         phba->sli4_hba.mbx_cq->queue_id);
9528         }
9529
9530         return 0;
9531 }
9532
9533 /**
9534  * lpfc_setup_cq_lookup - Setup the CQ lookup table
9535  * @phba: pointer to lpfc hba data structure.
9536  *
9537  * This routine will populate the cq_lookup table by all
9538  * available CQ queue_id's.
9539  **/
9540 static void
9541 lpfc_setup_cq_lookup(struct lpfc_hba *phba)
9542 {
9543         struct lpfc_queue *eq, *childq;
9544         int qidx;
9545
9546         memset(phba->sli4_hba.cq_lookup, 0,
9547                (sizeof(struct lpfc_queue *) * (phba->sli4_hba.cq_max + 1)));
9548         /* Loop thru all IRQ vectors */
9549         for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
9550                 /* Get the EQ corresponding to the IRQ vector */
9551                 eq = phba->sli4_hba.hba_eq_hdl[qidx].eq;
9552                 if (!eq)
9553                         continue;
9554                 /* Loop through all CQs associated with that EQ */
9555                 list_for_each_entry(childq, &eq->child_list, list) {
9556                         if (childq->queue_id > phba->sli4_hba.cq_max)
9557                                 continue;
9558                         if (childq->subtype == LPFC_IO)
9559                                 phba->sli4_hba.cq_lookup[childq->queue_id] =
9560                                         childq;
9561                 }
9562         }
9563 }
9564
9565 /**
9566  * lpfc_sli4_queue_setup - Set up all the SLI4 queues
9567  * @phba: pointer to lpfc hba data structure.
9568  *
9569  * This routine is invoked to set up all the SLI4 queues for the FCoE HBA
9570  * operation.
9571  *
9572  * Return codes
9573  *      0 - successful
9574  *      -ENOMEM - No available memory
9575  *      -EIO - The mailbox failed to complete successfully.
9576  **/
9577 int
9578 lpfc_sli4_queue_setup(struct lpfc_hba *phba)
9579 {
9580         uint32_t shdr_status, shdr_add_status;
9581         union lpfc_sli4_cfg_shdr *shdr;
9582         struct lpfc_vector_map_info *cpup;
9583         struct lpfc_sli4_hdw_queue *qp;
9584         LPFC_MBOXQ_t *mboxq;
9585         int qidx, cpu;
9586         uint32_t length, usdelay;
9587         int rc = -ENOMEM;
9588
9589         /* Check for dual-ULP support */
9590         mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
9591         if (!mboxq) {
9592                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9593                                 "3249 Unable to allocate memory for "
9594                                 "QUERY_FW_CFG mailbox command\n");
9595                 return -ENOMEM;
9596         }
9597         length = (sizeof(struct lpfc_mbx_query_fw_config) -
9598                   sizeof(struct lpfc_sli4_cfg_mhdr));
9599         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
9600                          LPFC_MBOX_OPCODE_QUERY_FW_CFG,
9601                          length, LPFC_SLI4_MBX_EMBED);
9602
9603         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
9604
9605         shdr = (union lpfc_sli4_cfg_shdr *)
9606                         &mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
9607         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9608         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9609         if (shdr_status || shdr_add_status || rc) {
9610                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9611                                 "3250 QUERY_FW_CFG mailbox failed with status "
9612                                 "x%x add_status x%x, mbx status x%x\n",
9613                                 shdr_status, shdr_add_status, rc);
9614                 mempool_free(mboxq, phba->mbox_mem_pool);
9615                 rc = -ENXIO;
9616                 goto out_error;
9617         }
9618
9619         phba->sli4_hba.fw_func_mode =
9620                         mboxq->u.mqe.un.query_fw_cfg.rsp.function_mode;
9621         phba->sli4_hba.ulp0_mode = mboxq->u.mqe.un.query_fw_cfg.rsp.ulp0_mode;
9622         phba->sli4_hba.ulp1_mode = mboxq->u.mqe.un.query_fw_cfg.rsp.ulp1_mode;
9623         phba->sli4_hba.physical_port =
9624                         mboxq->u.mqe.un.query_fw_cfg.rsp.physical_port;
9625         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9626                         "3251 QUERY_FW_CFG: func_mode:x%x, ulp0_mode:x%x, "
9627                         "ulp1_mode:x%x\n", phba->sli4_hba.fw_func_mode,
9628                         phba->sli4_hba.ulp0_mode, phba->sli4_hba.ulp1_mode);
9629
9630         mempool_free(mboxq, phba->mbox_mem_pool);
9631
9632         /*
9633          * Set up HBA Event Queues (EQs)
9634          */
9635         qp = phba->sli4_hba.hdwq;
9636
9637         /* Set up HBA event queue */
9638         if (!qp) {
9639                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9640                                 "3147 Fast-path EQs not allocated\n");
9641                 rc = -ENOMEM;
9642                 goto out_error;
9643         }
9644
9645         /* Loop thru all IRQ vectors */
9646         for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
9647                 /* Create HBA Event Queues (EQs) in order */
9648                 for_each_present_cpu(cpu) {
9649                         cpup = &phba->sli4_hba.cpu_map[cpu];
9650
9651                         /* Look for the CPU thats using that vector with
9652                          * LPFC_CPU_FIRST_IRQ set.
9653                          */
9654                         if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
9655                                 continue;
9656                         if (qidx != cpup->eq)
9657                                 continue;
9658
9659                         /* Create an EQ for that vector */
9660                         rc = lpfc_eq_create(phba, qp[cpup->hdwq].hba_eq,
9661                                             phba->cfg_fcp_imax);
9662                         if (rc) {
9663                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9664                                                 "0523 Failed setup of fast-path"
9665                                                 " EQ (%d), rc = 0x%x\n",
9666                                                 cpup->eq, (uint32_t)rc);
9667                                 goto out_destroy;
9668                         }
9669
9670                         /* Save the EQ for that vector in the hba_eq_hdl */
9671                         phba->sli4_hba.hba_eq_hdl[cpup->eq].eq =
9672                                 qp[cpup->hdwq].hba_eq;
9673
9674                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9675                                         "2584 HBA EQ setup: queue[%d]-id=%d\n",
9676                                         cpup->eq,
9677                                         qp[cpup->hdwq].hba_eq->queue_id);
9678                 }
9679         }
9680
9681         /* Loop thru all Hardware Queues */
9682         for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
9683                 cpu = lpfc_find_cpu_handle(phba, qidx, LPFC_FIND_BY_HDWQ);
9684                 cpup = &phba->sli4_hba.cpu_map[cpu];
9685
9686                 /* Create the CQ/WQ corresponding to the Hardware Queue */
9687                 rc = lpfc_create_wq_cq(phba,
9688                                        phba->sli4_hba.hdwq[cpup->hdwq].hba_eq,
9689                                        qp[qidx].io_cq,
9690                                        qp[qidx].io_wq,
9691                                        &phba->sli4_hba.hdwq[qidx].io_cq_map,
9692                                        qidx,
9693                                        LPFC_IO);
9694                 if (rc) {
9695                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9696                                         "0535 Failed to setup fastpath "
9697                                         "IO WQ/CQ (%d), rc = 0x%x\n",
9698                                         qidx, (uint32_t)rc);
9699                         goto out_destroy;
9700                 }
9701         }
9702
9703         /*
9704          * Set up Slow Path Complete Queues (CQs)
9705          */
9706
9707         /* Set up slow-path MBOX CQ/MQ */
9708
9709         if (!phba->sli4_hba.mbx_cq || !phba->sli4_hba.mbx_wq) {
9710                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9711                                 "0528 %s not allocated\n",
9712                                 phba->sli4_hba.mbx_cq ?
9713                                 "Mailbox WQ" : "Mailbox CQ");
9714                 rc = -ENOMEM;
9715                 goto out_destroy;
9716         }
9717
9718         rc = lpfc_create_wq_cq(phba, qp[0].hba_eq,
9719                                phba->sli4_hba.mbx_cq,
9720                                phba->sli4_hba.mbx_wq,
9721                                NULL, 0, LPFC_MBOX);
9722         if (rc) {
9723                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9724                         "0529 Failed setup of mailbox WQ/CQ: rc = 0x%x\n",
9725                         (uint32_t)rc);
9726                 goto out_destroy;
9727         }
9728         if (phba->nvmet_support) {
9729                 if (!phba->sli4_hba.nvmet_cqset) {
9730                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9731                                         "3165 Fast-path NVME CQ Set "
9732                                         "array not allocated\n");
9733                         rc = -ENOMEM;
9734                         goto out_destroy;
9735                 }
9736                 if (phba->cfg_nvmet_mrq > 1) {
9737                         rc = lpfc_cq_create_set(phba,
9738                                         phba->sli4_hba.nvmet_cqset,
9739                                         qp,
9740                                         LPFC_WCQ, LPFC_NVMET);
9741                         if (rc) {
9742                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9743                                                 "3164 Failed setup of NVME CQ "
9744                                                 "Set, rc = 0x%x\n",
9745                                                 (uint32_t)rc);
9746                                 goto out_destroy;
9747                         }
9748                 } else {
9749                         /* Set up NVMET Receive Complete Queue */
9750                         rc = lpfc_cq_create(phba, phba->sli4_hba.nvmet_cqset[0],
9751                                             qp[0].hba_eq,
9752                                             LPFC_WCQ, LPFC_NVMET);
9753                         if (rc) {
9754                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9755                                                 "6089 Failed setup NVMET CQ: "
9756                                                 "rc = 0x%x\n", (uint32_t)rc);
9757                                 goto out_destroy;
9758                         }
9759                         phba->sli4_hba.nvmet_cqset[0]->chann = 0;
9760
9761                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9762                                         "6090 NVMET CQ setup: cq-id=%d, "
9763                                         "parent eq-id=%d\n",
9764                                         phba->sli4_hba.nvmet_cqset[0]->queue_id,
9765                                         qp[0].hba_eq->queue_id);
9766                 }
9767         }
9768
9769         /* Set up slow-path ELS WQ/CQ */
9770         if (!phba->sli4_hba.els_cq || !phba->sli4_hba.els_wq) {
9771                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9772                                 "0530 ELS %s not allocated\n",
9773                                 phba->sli4_hba.els_cq ? "WQ" : "CQ");
9774                 rc = -ENOMEM;
9775                 goto out_destroy;
9776         }
9777         rc = lpfc_create_wq_cq(phba, qp[0].hba_eq,
9778                                phba->sli4_hba.els_cq,
9779                                phba->sli4_hba.els_wq,
9780                                NULL, 0, LPFC_ELS);
9781         if (rc) {
9782                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9783                                 "0525 Failed setup of ELS WQ/CQ: rc = 0x%x\n",
9784                                 (uint32_t)rc);
9785                 goto out_destroy;
9786         }
9787         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9788                         "2590 ELS WQ setup: wq-id=%d, parent cq-id=%d\n",
9789                         phba->sli4_hba.els_wq->queue_id,
9790                         phba->sli4_hba.els_cq->queue_id);
9791
9792         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
9793                 /* Set up NVME LS Complete Queue */
9794                 if (!phba->sli4_hba.nvmels_cq || !phba->sli4_hba.nvmels_wq) {
9795                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9796                                         "6091 LS %s not allocated\n",
9797                                         phba->sli4_hba.nvmels_cq ? "WQ" : "CQ");
9798                         rc = -ENOMEM;
9799                         goto out_destroy;
9800                 }
9801                 rc = lpfc_create_wq_cq(phba, qp[0].hba_eq,
9802                                        phba->sli4_hba.nvmels_cq,
9803                                        phba->sli4_hba.nvmels_wq,
9804                                        NULL, 0, LPFC_NVME_LS);
9805                 if (rc) {
9806                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9807                                         "0526 Failed setup of NVVME LS WQ/CQ: "
9808                                         "rc = 0x%x\n", (uint32_t)rc);
9809                         goto out_destroy;
9810                 }
9811
9812                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9813                                 "6096 ELS WQ setup: wq-id=%d, "
9814                                 "parent cq-id=%d\n",
9815                                 phba->sli4_hba.nvmels_wq->queue_id,
9816                                 phba->sli4_hba.nvmels_cq->queue_id);
9817         }
9818
9819         /*
9820          * Create NVMET Receive Queue (RQ)
9821          */
9822         if (phba->nvmet_support) {
9823                 if ((!phba->sli4_hba.nvmet_cqset) ||
9824                     (!phba->sli4_hba.nvmet_mrq_hdr) ||
9825                     (!phba->sli4_hba.nvmet_mrq_data)) {
9826                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9827                                         "6130 MRQ CQ Queues not "
9828                                         "allocated\n");
9829                         rc = -ENOMEM;
9830                         goto out_destroy;
9831                 }
9832                 if (phba->cfg_nvmet_mrq > 1) {
9833                         rc = lpfc_mrq_create(phba,
9834                                              phba->sli4_hba.nvmet_mrq_hdr,
9835                                              phba->sli4_hba.nvmet_mrq_data,
9836                                              phba->sli4_hba.nvmet_cqset,
9837                                              LPFC_NVMET);
9838                         if (rc) {
9839                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9840                                                 "6098 Failed setup of NVMET "
9841                                                 "MRQ: rc = 0x%x\n",
9842                                                 (uint32_t)rc);
9843                                 goto out_destroy;
9844                         }
9845
9846                 } else {
9847                         rc = lpfc_rq_create(phba,
9848                                             phba->sli4_hba.nvmet_mrq_hdr[0],
9849                                             phba->sli4_hba.nvmet_mrq_data[0],
9850                                             phba->sli4_hba.nvmet_cqset[0],
9851                                             LPFC_NVMET);
9852                         if (rc) {
9853                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9854                                                 "6057 Failed setup of NVMET "
9855                                                 "Receive Queue: rc = 0x%x\n",
9856                                                 (uint32_t)rc);
9857                                 goto out_destroy;
9858                         }
9859
9860                         lpfc_printf_log(
9861                                 phba, KERN_INFO, LOG_INIT,
9862                                 "6099 NVMET RQ setup: hdr-rq-id=%d, "
9863                                 "dat-rq-id=%d parent cq-id=%d\n",
9864                                 phba->sli4_hba.nvmet_mrq_hdr[0]->queue_id,
9865                                 phba->sli4_hba.nvmet_mrq_data[0]->queue_id,
9866                                 phba->sli4_hba.nvmet_cqset[0]->queue_id);
9867
9868                 }
9869         }
9870
9871         if (!phba->sli4_hba.hdr_rq || !phba->sli4_hba.dat_rq) {
9872                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9873                                 "0540 Receive Queue not allocated\n");
9874                 rc = -ENOMEM;
9875                 goto out_destroy;
9876         }
9877
9878         rc = lpfc_rq_create(phba, phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq,
9879                             phba->sli4_hba.els_cq, LPFC_USOL);
9880         if (rc) {
9881                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9882                                 "0541 Failed setup of Receive Queue: "
9883                                 "rc = 0x%x\n", (uint32_t)rc);
9884                 goto out_destroy;
9885         }
9886
9887         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9888                         "2592 USL RQ setup: hdr-rq-id=%d, dat-rq-id=%d "
9889                         "parent cq-id=%d\n",
9890                         phba->sli4_hba.hdr_rq->queue_id,
9891                         phba->sli4_hba.dat_rq->queue_id,
9892                         phba->sli4_hba.els_cq->queue_id);
9893
9894         if (phba->cfg_fcp_imax)
9895                 usdelay = LPFC_SEC_TO_USEC / phba->cfg_fcp_imax;
9896         else
9897                 usdelay = 0;
9898
9899         for (qidx = 0; qidx < phba->cfg_irq_chann;
9900              qidx += LPFC_MAX_EQ_DELAY_EQID_CNT)
9901                 lpfc_modify_hba_eq_delay(phba, qidx, LPFC_MAX_EQ_DELAY_EQID_CNT,
9902                                          usdelay);
9903
9904         if (phba->sli4_hba.cq_max) {
9905                 kfree(phba->sli4_hba.cq_lookup);
9906                 phba->sli4_hba.cq_lookup = kcalloc((phba->sli4_hba.cq_max + 1),
9907                         sizeof(struct lpfc_queue *), GFP_KERNEL);
9908                 if (!phba->sli4_hba.cq_lookup) {
9909                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9910                                         "0549 Failed setup of CQ Lookup table: "
9911                                         "size 0x%x\n", phba->sli4_hba.cq_max);
9912                         rc = -ENOMEM;
9913                         goto out_destroy;
9914                 }
9915                 lpfc_setup_cq_lookup(phba);
9916         }
9917         return 0;
9918
9919 out_destroy:
9920         lpfc_sli4_queue_unset(phba);
9921 out_error:
9922         return rc;
9923 }
9924
9925 /**
9926  * lpfc_sli4_queue_unset - Unset all the SLI4 queues
9927  * @phba: pointer to lpfc hba data structure.
9928  *
9929  * This routine is invoked to unset all the SLI4 queues with the FCoE HBA
9930  * operation.
9931  *
9932  * Return codes
9933  *      0 - successful
9934  *      -ENOMEM - No available memory
9935  *      -EIO - The mailbox failed to complete successfully.
9936  **/
9937 void
9938 lpfc_sli4_queue_unset(struct lpfc_hba *phba)
9939 {
9940         struct lpfc_sli4_hdw_queue *qp;
9941         struct lpfc_queue *eq;
9942         int qidx;
9943
9944         /* Unset mailbox command work queue */
9945         if (phba->sli4_hba.mbx_wq)
9946                 lpfc_mq_destroy(phba, phba->sli4_hba.mbx_wq);
9947
9948         /* Unset NVME LS work queue */
9949         if (phba->sli4_hba.nvmels_wq)
9950                 lpfc_wq_destroy(phba, phba->sli4_hba.nvmels_wq);
9951
9952         /* Unset ELS work queue */
9953         if (phba->sli4_hba.els_wq)
9954                 lpfc_wq_destroy(phba, phba->sli4_hba.els_wq);
9955
9956         /* Unset unsolicited receive queue */
9957         if (phba->sli4_hba.hdr_rq)
9958                 lpfc_rq_destroy(phba, phba->sli4_hba.hdr_rq,
9959                                 phba->sli4_hba.dat_rq);
9960
9961         /* Unset mailbox command complete queue */
9962         if (phba->sli4_hba.mbx_cq)
9963                 lpfc_cq_destroy(phba, phba->sli4_hba.mbx_cq);
9964
9965         /* Unset ELS complete queue */
9966         if (phba->sli4_hba.els_cq)
9967                 lpfc_cq_destroy(phba, phba->sli4_hba.els_cq);
9968
9969         /* Unset NVME LS complete queue */
9970         if (phba->sli4_hba.nvmels_cq)
9971                 lpfc_cq_destroy(phba, phba->sli4_hba.nvmels_cq);
9972
9973         if (phba->nvmet_support) {
9974                 /* Unset NVMET MRQ queue */
9975                 if (phba->sli4_hba.nvmet_mrq_hdr) {
9976                         for (qidx = 0; qidx < phba->cfg_nvmet_mrq; qidx++)
9977                                 lpfc_rq_destroy(
9978                                         phba,
9979                                         phba->sli4_hba.nvmet_mrq_hdr[qidx],
9980                                         phba->sli4_hba.nvmet_mrq_data[qidx]);
9981                 }
9982
9983                 /* Unset NVMET CQ Set complete queue */
9984                 if (phba->sli4_hba.nvmet_cqset) {
9985                         for (qidx = 0; qidx < phba->cfg_nvmet_mrq; qidx++)
9986                                 lpfc_cq_destroy(
9987                                         phba, phba->sli4_hba.nvmet_cqset[qidx]);
9988                 }
9989         }
9990
9991         /* Unset fast-path SLI4 queues */
9992         if (phba->sli4_hba.hdwq) {
9993                 /* Loop thru all Hardware Queues */
9994                 for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
9995                         /* Destroy the CQ/WQ corresponding to Hardware Queue */
9996                         qp = &phba->sli4_hba.hdwq[qidx];
9997                         lpfc_wq_destroy(phba, qp->io_wq);
9998                         lpfc_cq_destroy(phba, qp->io_cq);
9999                 }
10000                 /* Loop thru all IRQ vectors */
10001                 for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
10002                         /* Destroy the EQ corresponding to the IRQ vector */
10003                         eq = phba->sli4_hba.hba_eq_hdl[qidx].eq;
10004                         lpfc_eq_destroy(phba, eq);
10005                 }
10006         }
10007
10008         kfree(phba->sli4_hba.cq_lookup);
10009         phba->sli4_hba.cq_lookup = NULL;
10010         phba->sli4_hba.cq_max = 0;
10011 }
10012
10013 /**
10014  * lpfc_sli4_cq_event_pool_create - Create completion-queue event free pool
10015  * @phba: pointer to lpfc hba data structure.
10016  *
10017  * This routine is invoked to allocate and set up a pool of completion queue
10018  * events. The body of the completion queue event is a completion queue entry
10019  * CQE. For now, this pool is used for the interrupt service routine to queue
10020  * the following HBA completion queue events for the worker thread to process:
10021  *   - Mailbox asynchronous events
10022  *   - Receive queue completion unsolicited events
10023  * Later, this can be used for all the slow-path events.
10024  *
10025  * Return codes
10026  *      0 - successful
10027  *      -ENOMEM - No available memory
10028  **/
10029 static int
10030 lpfc_sli4_cq_event_pool_create(struct lpfc_hba *phba)
10031 {
10032         struct lpfc_cq_event *cq_event;
10033         int i;
10034
10035         for (i = 0; i < (4 * phba->sli4_hba.cq_ecount); i++) {
10036                 cq_event = kmalloc(sizeof(struct lpfc_cq_event), GFP_KERNEL);
10037                 if (!cq_event)
10038                         goto out_pool_create_fail;
10039                 list_add_tail(&cq_event->list,
10040                               &phba->sli4_hba.sp_cqe_event_pool);
10041         }
10042         return 0;
10043
10044 out_pool_create_fail:
10045         lpfc_sli4_cq_event_pool_destroy(phba);
10046         return -ENOMEM;
10047 }
10048
10049 /**
10050  * lpfc_sli4_cq_event_pool_destroy - Free completion-queue event free pool
10051  * @phba: pointer to lpfc hba data structure.
10052  *
10053  * This routine is invoked to free the pool of completion queue events at
10054  * driver unload time. Note that, it is the responsibility of the driver
10055  * cleanup routine to free all the outstanding completion-queue events
10056  * allocated from this pool back into the pool before invoking this routine
10057  * to destroy the pool.
10058  **/
10059 static void
10060 lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *phba)
10061 {
10062         struct lpfc_cq_event *cq_event, *next_cq_event;
10063
10064         list_for_each_entry_safe(cq_event, next_cq_event,
10065                                  &phba->sli4_hba.sp_cqe_event_pool, list) {
10066                 list_del(&cq_event->list);
10067                 kfree(cq_event);
10068         }
10069 }
10070
10071 /**
10072  * __lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
10073  * @phba: pointer to lpfc hba data structure.
10074  *
10075  * This routine is the lock free version of the API invoked to allocate a
10076  * completion-queue event from the free pool.
10077  *
10078  * Return: Pointer to the newly allocated completion-queue event if successful
10079  *         NULL otherwise.
10080  **/
10081 struct lpfc_cq_event *
10082 __lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
10083 {
10084         struct lpfc_cq_event *cq_event = NULL;
10085
10086         list_remove_head(&phba->sli4_hba.sp_cqe_event_pool, cq_event,
10087                          struct lpfc_cq_event, list);
10088         return cq_event;
10089 }
10090
10091 /**
10092  * lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
10093  * @phba: pointer to lpfc hba data structure.
10094  *
10095  * This routine is the lock version of the API invoked to allocate a
10096  * completion-queue event from the free pool.
10097  *
10098  * Return: Pointer to the newly allocated completion-queue event if successful
10099  *         NULL otherwise.
10100  **/
10101 struct lpfc_cq_event *
10102 lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
10103 {
10104         struct lpfc_cq_event *cq_event;
10105         unsigned long iflags;
10106
10107         spin_lock_irqsave(&phba->hbalock, iflags);
10108         cq_event = __lpfc_sli4_cq_event_alloc(phba);
10109         spin_unlock_irqrestore(&phba->hbalock, iflags);
10110         return cq_event;
10111 }
10112
10113 /**
10114  * __lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
10115  * @phba: pointer to lpfc hba data structure.
10116  * @cq_event: pointer to the completion queue event to be freed.
10117  *
10118  * This routine is the lock free version of the API invoked to release a
10119  * completion-queue event back into the free pool.
10120  **/
10121 void
10122 __lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
10123                              struct lpfc_cq_event *cq_event)
10124 {
10125         list_add_tail(&cq_event->list, &phba->sli4_hba.sp_cqe_event_pool);
10126 }
10127
10128 /**
10129  * lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
10130  * @phba: pointer to lpfc hba data structure.
10131  * @cq_event: pointer to the completion queue event to be freed.
10132  *
10133  * This routine is the lock version of the API invoked to release a
10134  * completion-queue event back into the free pool.
10135  **/
10136 void
10137 lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
10138                            struct lpfc_cq_event *cq_event)
10139 {
10140         unsigned long iflags;
10141         spin_lock_irqsave(&phba->hbalock, iflags);
10142         __lpfc_sli4_cq_event_release(phba, cq_event);
10143         spin_unlock_irqrestore(&phba->hbalock, iflags);
10144 }
10145
10146 /**
10147  * lpfc_sli4_cq_event_release_all - Release all cq events to the free pool
10148  * @phba: pointer to lpfc hba data structure.
10149  *
10150  * This routine is to free all the pending completion-queue events to the
10151  * back into the free pool for device reset.
10152  **/
10153 static void
10154 lpfc_sli4_cq_event_release_all(struct lpfc_hba *phba)
10155 {
10156         LIST_HEAD(cq_event_list);
10157         struct lpfc_cq_event *cq_event;
10158         unsigned long iflags;
10159
10160         /* Retrieve all the pending WCQEs from pending WCQE lists */
10161
10162         /* Pending ELS XRI abort events */
10163         spin_lock_irqsave(&phba->sli4_hba.els_xri_abrt_list_lock, iflags);
10164         list_splice_init(&phba->sli4_hba.sp_els_xri_aborted_work_queue,
10165                          &cq_event_list);
10166         spin_unlock_irqrestore(&phba->sli4_hba.els_xri_abrt_list_lock, iflags);
10167
10168         /* Pending asynnc events */
10169         spin_lock_irqsave(&phba->sli4_hba.asynce_list_lock, iflags);
10170         list_splice_init(&phba->sli4_hba.sp_asynce_work_queue,
10171                          &cq_event_list);
10172         spin_unlock_irqrestore(&phba->sli4_hba.asynce_list_lock, iflags);
10173
10174         while (!list_empty(&cq_event_list)) {
10175                 list_remove_head(&cq_event_list, cq_event,
10176                                  struct lpfc_cq_event, list);
10177                 lpfc_sli4_cq_event_release(phba, cq_event);
10178         }
10179 }
10180
10181 /**
10182  * lpfc_pci_function_reset - Reset pci function.
10183  * @phba: pointer to lpfc hba data structure.
10184  *
10185  * This routine is invoked to request a PCI function reset. It will destroys
10186  * all resources assigned to the PCI function which originates this request.
10187  *
10188  * Return codes
10189  *      0 - successful
10190  *      -ENOMEM - No available memory
10191  *      -EIO - The mailbox failed to complete successfully.
10192  **/
10193 int
10194 lpfc_pci_function_reset(struct lpfc_hba *phba)
10195 {
10196         LPFC_MBOXQ_t *mboxq;
10197         uint32_t rc = 0, if_type;
10198         uint32_t shdr_status, shdr_add_status;
10199         uint32_t rdy_chk;
10200         uint32_t port_reset = 0;
10201         union lpfc_sli4_cfg_shdr *shdr;
10202         struct lpfc_register reg_data;
10203         uint16_t devid;
10204
10205         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
10206         switch (if_type) {
10207         case LPFC_SLI_INTF_IF_TYPE_0:
10208                 mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
10209                                                        GFP_KERNEL);
10210                 if (!mboxq) {
10211                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10212                                         "0494 Unable to allocate memory for "
10213                                         "issuing SLI_FUNCTION_RESET mailbox "
10214                                         "command\n");
10215                         return -ENOMEM;
10216                 }
10217
10218                 /* Setup PCI function reset mailbox-ioctl command */
10219                 lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
10220                                  LPFC_MBOX_OPCODE_FUNCTION_RESET, 0,
10221                                  LPFC_SLI4_MBX_EMBED);
10222                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
10223                 shdr = (union lpfc_sli4_cfg_shdr *)
10224                         &mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
10225                 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
10226                 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
10227                                          &shdr->response);
10228                 mempool_free(mboxq, phba->mbox_mem_pool);
10229                 if (shdr_status || shdr_add_status || rc) {
10230                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10231                                         "0495 SLI_FUNCTION_RESET mailbox "
10232                                         "failed with status x%x add_status x%x,"
10233                                         " mbx status x%x\n",
10234                                         shdr_status, shdr_add_status, rc);
10235                         rc = -ENXIO;
10236                 }
10237                 break;
10238         case LPFC_SLI_INTF_IF_TYPE_2:
10239         case LPFC_SLI_INTF_IF_TYPE_6:
10240 wait:
10241                 /*
10242                  * Poll the Port Status Register and wait for RDY for
10243                  * up to 30 seconds. If the port doesn't respond, treat
10244                  * it as an error.
10245                  */
10246                 for (rdy_chk = 0; rdy_chk < 1500; rdy_chk++) {
10247                         if (lpfc_readl(phba->sli4_hba.u.if_type2.
10248                                 STATUSregaddr, &reg_data.word0)) {
10249                                 rc = -ENODEV;
10250                                 goto out;
10251                         }
10252                         if (bf_get(lpfc_sliport_status_rdy, &reg_data))
10253                                 break;
10254                         msleep(20);
10255                 }
10256
10257                 if (!bf_get(lpfc_sliport_status_rdy, &reg_data)) {
10258                         phba->work_status[0] = readl(
10259                                 phba->sli4_hba.u.if_type2.ERR1regaddr);
10260                         phba->work_status[1] = readl(
10261                                 phba->sli4_hba.u.if_type2.ERR2regaddr);
10262                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10263                                         "2890 Port not ready, port status reg "
10264                                         "0x%x error 1=0x%x, error 2=0x%x\n",
10265                                         reg_data.word0,
10266                                         phba->work_status[0],
10267                                         phba->work_status[1]);
10268                         rc = -ENODEV;
10269                         goto out;
10270                 }
10271
10272                 if (!port_reset) {
10273                         /*
10274                          * Reset the port now
10275                          */
10276                         reg_data.word0 = 0;
10277                         bf_set(lpfc_sliport_ctrl_end, &reg_data,
10278                                LPFC_SLIPORT_LITTLE_ENDIAN);
10279                         bf_set(lpfc_sliport_ctrl_ip, &reg_data,
10280                                LPFC_SLIPORT_INIT_PORT);
10281                         writel(reg_data.word0, phba->sli4_hba.u.if_type2.
10282                                CTRLregaddr);
10283                         /* flush */
10284                         pci_read_config_word(phba->pcidev,
10285                                              PCI_DEVICE_ID, &devid);
10286
10287                         port_reset = 1;
10288                         msleep(20);
10289                         goto wait;
10290                 } else if (bf_get(lpfc_sliport_status_rn, &reg_data)) {
10291                         rc = -ENODEV;
10292                         goto out;
10293                 }
10294                 break;
10295
10296         case LPFC_SLI_INTF_IF_TYPE_1:
10297         default:
10298                 break;
10299         }
10300
10301 out:
10302         /* Catch the not-ready port failure after a port reset. */
10303         if (rc) {
10304                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10305                                 "3317 HBA not functional: IP Reset Failed "
10306                                 "try: echo fw_reset > board_mode\n");
10307                 rc = -ENODEV;
10308         }
10309
10310         return rc;
10311 }
10312
10313 /**
10314  * lpfc_sli4_pci_mem_setup - Setup SLI4 HBA PCI memory space.
10315  * @phba: pointer to lpfc hba data structure.
10316  *
10317  * This routine is invoked to set up the PCI device memory space for device
10318  * with SLI-4 interface spec.
10319  *
10320  * Return codes
10321  *      0 - successful
10322  *      other values - error
10323  **/
10324 static int
10325 lpfc_sli4_pci_mem_setup(struct lpfc_hba *phba)
10326 {
10327         struct pci_dev *pdev = phba->pcidev;
10328         unsigned long bar0map_len, bar1map_len, bar2map_len;
10329         int error;
10330         uint32_t if_type;
10331
10332         if (!pdev)
10333                 return -ENODEV;
10334
10335         /* Set the device DMA mask size */
10336         error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10337         if (error)
10338                 error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10339         if (error)
10340                 return error;
10341
10342         /*
10343          * The BARs and register set definitions and offset locations are
10344          * dependent on the if_type.
10345          */
10346         if (pci_read_config_dword(pdev, LPFC_SLI_INTF,
10347                                   &phba->sli4_hba.sli_intf.word0)) {
10348                 return -ENODEV;
10349         }
10350
10351         /* There is no SLI3 failback for SLI4 devices. */
10352         if (bf_get(lpfc_sli_intf_valid, &phba->sli4_hba.sli_intf) !=
10353             LPFC_SLI_INTF_VALID) {
10354                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10355                                 "2894 SLI_INTF reg contents invalid "
10356                                 "sli_intf reg 0x%x\n",
10357                                 phba->sli4_hba.sli_intf.word0);
10358                 return -ENODEV;
10359         }
10360
10361         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
10362         /*
10363          * Get the bus address of SLI4 device Bar regions and the
10364          * number of bytes required by each mapping. The mapping of the
10365          * particular PCI BARs regions is dependent on the type of
10366          * SLI4 device.
10367          */
10368         if (pci_resource_start(pdev, PCI_64BIT_BAR0)) {
10369                 phba->pci_bar0_map = pci_resource_start(pdev, PCI_64BIT_BAR0);
10370                 bar0map_len = pci_resource_len(pdev, PCI_64BIT_BAR0);
10371
10372                 /*
10373                  * Map SLI4 PCI Config Space Register base to a kernel virtual
10374                  * addr
10375                  */
10376                 phba->sli4_hba.conf_regs_memmap_p =
10377                         ioremap(phba->pci_bar0_map, bar0map_len);
10378                 if (!phba->sli4_hba.conf_regs_memmap_p) {
10379                         dev_printk(KERN_ERR, &pdev->dev,
10380                                    "ioremap failed for SLI4 PCI config "
10381                                    "registers.\n");
10382                         return -ENODEV;
10383                 }
10384                 phba->pci_bar0_memmap_p = phba->sli4_hba.conf_regs_memmap_p;
10385                 /* Set up BAR0 PCI config space register memory map */
10386                 lpfc_sli4_bar0_register_memmap(phba, if_type);
10387         } else {
10388                 phba->pci_bar0_map = pci_resource_start(pdev, 1);
10389                 bar0map_len = pci_resource_len(pdev, 1);
10390                 if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
10391                         dev_printk(KERN_ERR, &pdev->dev,
10392                            "FATAL - No BAR0 mapping for SLI4, if_type 2\n");
10393                         return -ENODEV;
10394                 }
10395                 phba->sli4_hba.conf_regs_memmap_p =
10396                                 ioremap(phba->pci_bar0_map, bar0map_len);
10397                 if (!phba->sli4_hba.conf_regs_memmap_p) {
10398                         dev_printk(KERN_ERR, &pdev->dev,
10399                                 "ioremap failed for SLI4 PCI config "
10400                                 "registers.\n");
10401                         return -ENODEV;
10402                 }
10403                 lpfc_sli4_bar0_register_memmap(phba, if_type);
10404         }
10405
10406         if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {
10407                 if (pci_resource_start(pdev, PCI_64BIT_BAR2)) {
10408                         /*
10409                          * Map SLI4 if type 0 HBA Control Register base to a
10410                          * kernel virtual address and setup the registers.
10411                          */
10412                         phba->pci_bar1_map = pci_resource_start(pdev,
10413                                                                 PCI_64BIT_BAR2);
10414                         bar1map_len = pci_resource_len(pdev, PCI_64BIT_BAR2);
10415                         phba->sli4_hba.ctrl_regs_memmap_p =
10416                                         ioremap(phba->pci_bar1_map,
10417                                                 bar1map_len);
10418                         if (!phba->sli4_hba.ctrl_regs_memmap_p) {
10419                                 dev_err(&pdev->dev,
10420                                            "ioremap failed for SLI4 HBA "
10421                                             "control registers.\n");
10422                                 error = -ENOMEM;
10423                                 goto out_iounmap_conf;
10424                         }
10425                         phba->pci_bar2_memmap_p =
10426                                          phba->sli4_hba.ctrl_regs_memmap_p;
10427                         lpfc_sli4_bar1_register_memmap(phba, if_type);
10428                 } else {
10429                         error = -ENOMEM;
10430                         goto out_iounmap_conf;
10431                 }
10432         }
10433
10434         if ((if_type == LPFC_SLI_INTF_IF_TYPE_6) &&
10435             (pci_resource_start(pdev, PCI_64BIT_BAR2))) {
10436                 /*
10437                  * Map SLI4 if type 6 HBA Doorbell Register base to a kernel
10438                  * virtual address and setup the registers.
10439                  */
10440                 phba->pci_bar1_map = pci_resource_start(pdev, PCI_64BIT_BAR2);
10441                 bar1map_len = pci_resource_len(pdev, PCI_64BIT_BAR2);
10442                 phba->sli4_hba.drbl_regs_memmap_p =
10443                                 ioremap(phba->pci_bar1_map, bar1map_len);
10444                 if (!phba->sli4_hba.drbl_regs_memmap_p) {
10445                         dev_err(&pdev->dev,
10446                            "ioremap failed for SLI4 HBA doorbell registers.\n");
10447                         error = -ENOMEM;
10448                         goto out_iounmap_conf;
10449                 }
10450                 phba->pci_bar2_memmap_p = phba->sli4_hba.drbl_regs_memmap_p;
10451                 lpfc_sli4_bar1_register_memmap(phba, if_type);
10452         }
10453
10454         if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {
10455                 if (pci_resource_start(pdev, PCI_64BIT_BAR4)) {
10456                         /*
10457                          * Map SLI4 if type 0 HBA Doorbell Register base to
10458                          * a kernel virtual address and setup the registers.
10459                          */
10460                         phba->pci_bar2_map = pci_resource_start(pdev,
10461                                                                 PCI_64BIT_BAR4);
10462                         bar2map_len = pci_resource_len(pdev, PCI_64BIT_BAR4);
10463                         phba->sli4_hba.drbl_regs_memmap_p =
10464                                         ioremap(phba->pci_bar2_map,
10465                                                 bar2map_len);
10466                         if (!phba->sli4_hba.drbl_regs_memmap_p) {
10467                                 dev_err(&pdev->dev,
10468                                            "ioremap failed for SLI4 HBA"
10469                                            " doorbell registers.\n");
10470                                 error = -ENOMEM;
10471                                 goto out_iounmap_ctrl;
10472                         }
10473                         phba->pci_bar4_memmap_p =
10474                                         phba->sli4_hba.drbl_regs_memmap_p;
10475                         error = lpfc_sli4_bar2_register_memmap(phba, LPFC_VF0);
10476                         if (error)
10477                                 goto out_iounmap_all;
10478                 } else {
10479                         error = -ENOMEM;
10480                         goto out_iounmap_ctrl;
10481                 }
10482         }
10483
10484         if (if_type == LPFC_SLI_INTF_IF_TYPE_6 &&
10485             pci_resource_start(pdev, PCI_64BIT_BAR4)) {
10486                 /*
10487                  * Map SLI4 if type 6 HBA DPP Register base to a kernel
10488                  * virtual address and setup the registers.
10489                  */
10490                 phba->pci_bar2_map = pci_resource_start(pdev, PCI_64BIT_BAR4);
10491                 bar2map_len = pci_resource_len(pdev, PCI_64BIT_BAR4);
10492                 phba->sli4_hba.dpp_regs_memmap_p =
10493                                 ioremap(phba->pci_bar2_map, bar2map_len);
10494                 if (!phba->sli4_hba.dpp_regs_memmap_p) {
10495                         dev_err(&pdev->dev,
10496                            "ioremap failed for SLI4 HBA dpp registers.\n");
10497                         error = -ENOMEM;
10498                         goto out_iounmap_all;
10499                 }
10500                 phba->pci_bar4_memmap_p = phba->sli4_hba.dpp_regs_memmap_p;
10501         }
10502
10503         /* Set up the EQ/CQ register handeling functions now */
10504         switch (if_type) {
10505         case LPFC_SLI_INTF_IF_TYPE_0:
10506         case LPFC_SLI_INTF_IF_TYPE_2:
10507                 phba->sli4_hba.sli4_eq_clr_intr = lpfc_sli4_eq_clr_intr;
10508                 phba->sli4_hba.sli4_write_eq_db = lpfc_sli4_write_eq_db;
10509                 phba->sli4_hba.sli4_write_cq_db = lpfc_sli4_write_cq_db;
10510                 break;
10511         case LPFC_SLI_INTF_IF_TYPE_6:
10512                 phba->sli4_hba.sli4_eq_clr_intr = lpfc_sli4_if6_eq_clr_intr;
10513                 phba->sli4_hba.sli4_write_eq_db = lpfc_sli4_if6_write_eq_db;
10514                 phba->sli4_hba.sli4_write_cq_db = lpfc_sli4_if6_write_cq_db;
10515                 break;
10516         default:
10517                 break;
10518         }
10519
10520         return 0;
10521
10522 out_iounmap_all:
10523         if (phba->sli4_hba.drbl_regs_memmap_p)
10524                 iounmap(phba->sli4_hba.drbl_regs_memmap_p);
10525 out_iounmap_ctrl:
10526         if (phba->sli4_hba.ctrl_regs_memmap_p)
10527                 iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
10528 out_iounmap_conf:
10529         iounmap(phba->sli4_hba.conf_regs_memmap_p);
10530
10531         return error;
10532 }
10533
10534 /**
10535  * lpfc_sli4_pci_mem_unset - Unset SLI4 HBA PCI memory space.
10536  * @phba: pointer to lpfc hba data structure.
10537  *
10538  * This routine is invoked to unset the PCI device memory space for device
10539  * with SLI-4 interface spec.
10540  **/
10541 static void
10542 lpfc_sli4_pci_mem_unset(struct lpfc_hba *phba)
10543 {
10544         uint32_t if_type;
10545         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
10546
10547         switch (if_type) {
10548         case LPFC_SLI_INTF_IF_TYPE_0:
10549                 iounmap(phba->sli4_hba.drbl_regs_memmap_p);
10550                 iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
10551                 iounmap(phba->sli4_hba.conf_regs_memmap_p);
10552                 break;
10553         case LPFC_SLI_INTF_IF_TYPE_2:
10554                 iounmap(phba->sli4_hba.conf_regs_memmap_p);
10555                 break;
10556         case LPFC_SLI_INTF_IF_TYPE_6:
10557                 iounmap(phba->sli4_hba.drbl_regs_memmap_p);
10558                 iounmap(phba->sli4_hba.conf_regs_memmap_p);
10559                 if (phba->sli4_hba.dpp_regs_memmap_p)
10560                         iounmap(phba->sli4_hba.dpp_regs_memmap_p);
10561                 break;
10562         case LPFC_SLI_INTF_IF_TYPE_1:
10563         default:
10564                 dev_printk(KERN_ERR, &phba->pcidev->dev,
10565                            "FATAL - unsupported SLI4 interface type - %d\n",
10566                            if_type);
10567                 break;
10568         }
10569 }
10570
10571 /**
10572  * lpfc_sli_enable_msix - Enable MSI-X interrupt mode on SLI-3 device
10573  * @phba: pointer to lpfc hba data structure.
10574  *
10575  * This routine is invoked to enable the MSI-X interrupt vectors to device
10576  * with SLI-3 interface specs.
10577  *
10578  * Return codes
10579  *   0 - successful
10580  *   other values - error
10581  **/
10582 static int
10583 lpfc_sli_enable_msix(struct lpfc_hba *phba)
10584 {
10585         int rc;
10586         LPFC_MBOXQ_t *pmb;
10587
10588         /* Set up MSI-X multi-message vectors */
10589         rc = pci_alloc_irq_vectors(phba->pcidev,
10590                         LPFC_MSIX_VECTORS, LPFC_MSIX_VECTORS, PCI_IRQ_MSIX);
10591         if (rc < 0) {
10592                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10593                                 "0420 PCI enable MSI-X failed (%d)\n", rc);
10594                 goto vec_fail_out;
10595         }
10596
10597         /*
10598          * Assign MSI-X vectors to interrupt handlers
10599          */
10600
10601         /* vector-0 is associated to slow-path handler */
10602         rc = request_irq(pci_irq_vector(phba->pcidev, 0),
10603                          &lpfc_sli_sp_intr_handler, 0,
10604                          LPFC_SP_DRIVER_HANDLER_NAME, phba);
10605         if (rc) {
10606                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
10607                                 "0421 MSI-X slow-path request_irq failed "
10608                                 "(%d)\n", rc);
10609                 goto msi_fail_out;
10610         }
10611
10612         /* vector-1 is associated to fast-path handler */
10613         rc = request_irq(pci_irq_vector(phba->pcidev, 1),
10614                          &lpfc_sli_fp_intr_handler, 0,
10615                          LPFC_FP_DRIVER_HANDLER_NAME, phba);
10616
10617         if (rc) {
10618                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
10619                                 "0429 MSI-X fast-path request_irq failed "
10620                                 "(%d)\n", rc);
10621                 goto irq_fail_out;
10622         }
10623
10624         /*
10625          * Configure HBA MSI-X attention conditions to messages
10626          */
10627         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
10628
10629         if (!pmb) {
10630                 rc = -ENOMEM;
10631                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10632                                 "0474 Unable to allocate memory for issuing "
10633                                 "MBOX_CONFIG_MSI command\n");
10634                 goto mem_fail_out;
10635         }
10636         rc = lpfc_config_msi(phba, pmb);
10637         if (rc)
10638                 goto mbx_fail_out;
10639         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
10640         if (rc != MBX_SUCCESS) {
10641                 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
10642                                 "0351 Config MSI mailbox command failed, "
10643                                 "mbxCmd x%x, mbxStatus x%x\n",
10644                                 pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus);
10645                 goto mbx_fail_out;
10646         }
10647
10648         /* Free memory allocated for mailbox command */
10649         mempool_free(pmb, phba->mbox_mem_pool);
10650         return rc;
10651
10652 mbx_fail_out:
10653         /* Free memory allocated for mailbox command */
10654         mempool_free(pmb, phba->mbox_mem_pool);
10655
10656 mem_fail_out:
10657         /* free the irq already requested */
10658         free_irq(pci_irq_vector(phba->pcidev, 1), phba);
10659
10660 irq_fail_out:
10661         /* free the irq already requested */
10662         free_irq(pci_irq_vector(phba->pcidev, 0), phba);
10663
10664 msi_fail_out:
10665         /* Unconfigure MSI-X capability structure */
10666         pci_free_irq_vectors(phba->pcidev);
10667
10668 vec_fail_out:
10669         return rc;
10670 }
10671
10672 /**
10673  * lpfc_sli_enable_msi - Enable MSI interrupt mode on SLI-3 device.
10674  * @phba: pointer to lpfc hba data structure.
10675  *
10676  * This routine is invoked to enable the MSI interrupt mode to device with
10677  * SLI-3 interface spec. The kernel function pci_enable_msi() is called to
10678  * enable the MSI vector. The device driver is responsible for calling the
10679  * request_irq() to register MSI vector with a interrupt the handler, which
10680  * is done in this function.
10681  *
10682  * Return codes
10683  *      0 - successful
10684  *      other values - error
10685  */
10686 static int
10687 lpfc_sli_enable_msi(struct lpfc_hba *phba)
10688 {
10689         int rc;
10690
10691         rc = pci_enable_msi(phba->pcidev);
10692         if (!rc)
10693                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10694                                 "0462 PCI enable MSI mode success.\n");
10695         else {
10696                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10697                                 "0471 PCI enable MSI mode failed (%d)\n", rc);
10698                 return rc;
10699         }
10700
10701         rc = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
10702                          0, LPFC_DRIVER_NAME, phba);
10703         if (rc) {
10704                 pci_disable_msi(phba->pcidev);
10705                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
10706                                 "0478 MSI request_irq failed (%d)\n", rc);
10707         }
10708         return rc;
10709 }
10710
10711 /**
10712  * lpfc_sli_enable_intr - Enable device interrupt to SLI-3 device.
10713  * @phba: pointer to lpfc hba data structure.
10714  * @cfg_mode: Interrupt configuration mode (INTx, MSI or MSI-X).
10715  *
10716  * This routine is invoked to enable device interrupt and associate driver's
10717  * interrupt handler(s) to interrupt vector(s) to device with SLI-3 interface
10718  * spec. Depends on the interrupt mode configured to the driver, the driver
10719  * will try to fallback from the configured interrupt mode to an interrupt
10720  * mode which is supported by the platform, kernel, and device in the order
10721  * of:
10722  * MSI-X -> MSI -> IRQ.
10723  *
10724  * Return codes
10725  *   0 - successful
10726  *   other values - error
10727  **/
10728 static uint32_t
10729 lpfc_sli_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
10730 {
10731         uint32_t intr_mode = LPFC_INTR_ERROR;
10732         int retval;
10733
10734         if (cfg_mode == 2) {
10735                 /* Need to issue conf_port mbox cmd before conf_msi mbox cmd */
10736                 retval = lpfc_sli_config_port(phba, LPFC_SLI_REV3);
10737                 if (!retval) {
10738                         /* Now, try to enable MSI-X interrupt mode */
10739                         retval = lpfc_sli_enable_msix(phba);
10740                         if (!retval) {
10741                                 /* Indicate initialization to MSI-X mode */
10742                                 phba->intr_type = MSIX;
10743                                 intr_mode = 2;
10744                         }
10745                 }
10746         }
10747
10748         /* Fallback to MSI if MSI-X initialization failed */
10749         if (cfg_mode >= 1 && phba->intr_type == NONE) {
10750                 retval = lpfc_sli_enable_msi(phba);
10751                 if (!retval) {
10752                         /* Indicate initialization to MSI mode */
10753                         phba->intr_type = MSI;
10754                         intr_mode = 1;
10755                 }
10756         }
10757
10758         /* Fallback to INTx if both MSI-X/MSI initalization failed */
10759         if (phba->intr_type == NONE) {
10760                 retval = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
10761                                      IRQF_SHARED, LPFC_DRIVER_NAME, phba);
10762                 if (!retval) {
10763                         /* Indicate initialization to INTx mode */
10764                         phba->intr_type = INTx;
10765                         intr_mode = 0;
10766                 }
10767         }
10768         return intr_mode;
10769 }
10770
10771 /**
10772  * lpfc_sli_disable_intr - Disable device interrupt to SLI-3 device.
10773  * @phba: pointer to lpfc hba data structure.
10774  *
10775  * This routine is invoked to disable device interrupt and disassociate the
10776  * driver's interrupt handler(s) from interrupt vector(s) to device with
10777  * SLI-3 interface spec. Depending on the interrupt mode, the driver will
10778  * release the interrupt vector(s) for the message signaled interrupt.
10779  **/
10780 static void
10781 lpfc_sli_disable_intr(struct lpfc_hba *phba)
10782 {
10783         int nr_irqs, i;
10784
10785         if (phba->intr_type == MSIX)
10786                 nr_irqs = LPFC_MSIX_VECTORS;
10787         else
10788                 nr_irqs = 1;
10789
10790         for (i = 0; i < nr_irqs; i++)
10791                 free_irq(pci_irq_vector(phba->pcidev, i), phba);
10792         pci_free_irq_vectors(phba->pcidev);
10793
10794         /* Reset interrupt management states */
10795         phba->intr_type = NONE;
10796         phba->sli.slistat.sli_intr = 0;
10797 }
10798
10799 /**
10800  * lpfc_find_cpu_handle - Find the CPU that corresponds to the specified Queue
10801  * @phba: pointer to lpfc hba data structure.
10802  * @id: EQ vector index or Hardware Queue index
10803  * @match: LPFC_FIND_BY_EQ = match by EQ
10804  *         LPFC_FIND_BY_HDWQ = match by Hardware Queue
10805  * Return the CPU that matches the selection criteria
10806  */
10807 static uint16_t
10808 lpfc_find_cpu_handle(struct lpfc_hba *phba, uint16_t id, int match)
10809 {
10810         struct lpfc_vector_map_info *cpup;
10811         int cpu;
10812
10813         /* Loop through all CPUs */
10814         for_each_present_cpu(cpu) {
10815                 cpup = &phba->sli4_hba.cpu_map[cpu];
10816
10817                 /* If we are matching by EQ, there may be multiple CPUs using
10818                  * using the same vector, so select the one with
10819                  * LPFC_CPU_FIRST_IRQ set.
10820                  */
10821                 if ((match == LPFC_FIND_BY_EQ) &&
10822                     (cpup->flag & LPFC_CPU_FIRST_IRQ) &&
10823                     (cpup->eq == id))
10824                         return cpu;
10825
10826                 /* If matching by HDWQ, select the first CPU that matches */
10827                 if ((match == LPFC_FIND_BY_HDWQ) && (cpup->hdwq == id))
10828                         return cpu;
10829         }
10830         return 0;
10831 }
10832
10833 #ifdef CONFIG_X86
10834 /**
10835  * lpfc_find_hyper - Determine if the CPU map entry is hyper-threaded
10836  * @phba: pointer to lpfc hba data structure.
10837  * @cpu: CPU map index
10838  * @phys_id: CPU package physical id
10839  * @core_id: CPU core id
10840  */
10841 static int
10842 lpfc_find_hyper(struct lpfc_hba *phba, int cpu,
10843                 uint16_t phys_id, uint16_t core_id)
10844 {
10845         struct lpfc_vector_map_info *cpup;
10846         int idx;
10847
10848         for_each_present_cpu(idx) {
10849                 cpup = &phba->sli4_hba.cpu_map[idx];
10850                 /* Does the cpup match the one we are looking for */
10851                 if ((cpup->phys_id == phys_id) &&
10852                     (cpup->core_id == core_id) &&
10853                     (cpu != idx))
10854                         return 1;
10855         }
10856         return 0;
10857 }
10858 #endif
10859
10860 /*
10861  * lpfc_assign_eq_map_info - Assigns eq for vector_map structure
10862  * @phba: pointer to lpfc hba data structure.
10863  * @eqidx: index for eq and irq vector
10864  * @flag: flags to set for vector_map structure
10865  * @cpu: cpu used to index vector_map structure
10866  *
10867  * The routine assigns eq info into vector_map structure
10868  */
10869 static inline void
10870 lpfc_assign_eq_map_info(struct lpfc_hba *phba, uint16_t eqidx, uint16_t flag,
10871                         unsigned int cpu)
10872 {
10873         struct lpfc_vector_map_info *cpup = &phba->sli4_hba.cpu_map[cpu];
10874         struct lpfc_hba_eq_hdl *eqhdl = lpfc_get_eq_hdl(eqidx);
10875
10876         cpup->eq = eqidx;
10877         cpup->flag |= flag;
10878
10879         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10880                         "3336 Set Affinity: CPU %d irq %d eq %d flag x%x\n",
10881                         cpu, eqhdl->irq, cpup->eq, cpup->flag);
10882 }
10883
10884 /**
10885  * lpfc_cpu_map_array_init - Initialize cpu_map structure
10886  * @phba: pointer to lpfc hba data structure.
10887  *
10888  * The routine initializes the cpu_map array structure
10889  */
10890 static void
10891 lpfc_cpu_map_array_init(struct lpfc_hba *phba)
10892 {
10893         struct lpfc_vector_map_info *cpup;
10894         struct lpfc_eq_intr_info *eqi;
10895         int cpu;
10896
10897         for_each_possible_cpu(cpu) {
10898                 cpup = &phba->sli4_hba.cpu_map[cpu];
10899                 cpup->phys_id = LPFC_VECTOR_MAP_EMPTY;
10900                 cpup->core_id = LPFC_VECTOR_MAP_EMPTY;
10901                 cpup->hdwq = LPFC_VECTOR_MAP_EMPTY;
10902                 cpup->eq = LPFC_VECTOR_MAP_EMPTY;
10903                 cpup->flag = 0;
10904                 eqi = per_cpu_ptr(phba->sli4_hba.eq_info, cpu);
10905                 INIT_LIST_HEAD(&eqi->list);
10906                 eqi->icnt = 0;
10907         }
10908 }
10909
10910 /**
10911  * lpfc_hba_eq_hdl_array_init - Initialize hba_eq_hdl structure
10912  * @phba: pointer to lpfc hba data structure.
10913  *
10914  * The routine initializes the hba_eq_hdl array structure
10915  */
10916 static void
10917 lpfc_hba_eq_hdl_array_init(struct lpfc_hba *phba)
10918 {
10919         struct lpfc_hba_eq_hdl *eqhdl;
10920         int i;
10921
10922         for (i = 0; i < phba->cfg_irq_chann; i++) {
10923                 eqhdl = lpfc_get_eq_hdl(i);
10924                 eqhdl->irq = LPFC_VECTOR_MAP_EMPTY;
10925                 eqhdl->phba = phba;
10926         }
10927 }
10928
10929 /**
10930  * lpfc_cpu_affinity_check - Check vector CPU affinity mappings
10931  * @phba: pointer to lpfc hba data structure.
10932  * @vectors: number of msix vectors allocated.
10933  *
10934  * The routine will figure out the CPU affinity assignment for every
10935  * MSI-X vector allocated for the HBA.
10936  * In addition, the CPU to IO channel mapping will be calculated
10937  * and the phba->sli4_hba.cpu_map array will reflect this.
10938  */
10939 static void
10940 lpfc_cpu_affinity_check(struct lpfc_hba *phba, int vectors)
10941 {
10942         int i, cpu, idx, next_idx, new_cpu, start_cpu, first_cpu;
10943         int max_phys_id, min_phys_id;
10944         int max_core_id, min_core_id;
10945         struct lpfc_vector_map_info *cpup;
10946         struct lpfc_vector_map_info *new_cpup;
10947 #ifdef CONFIG_X86
10948         struct cpuinfo_x86 *cpuinfo;
10949 #endif
10950 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
10951         struct lpfc_hdwq_stat *c_stat;
10952 #endif
10953
10954         max_phys_id = 0;
10955         min_phys_id = LPFC_VECTOR_MAP_EMPTY;
10956         max_core_id = 0;
10957         min_core_id = LPFC_VECTOR_MAP_EMPTY;
10958
10959         /* Update CPU map with physical id and core id of each CPU */
10960         for_each_present_cpu(cpu) {
10961                 cpup = &phba->sli4_hba.cpu_map[cpu];
10962 #ifdef CONFIG_X86
10963                 cpuinfo = &cpu_data(cpu);
10964                 cpup->phys_id = cpuinfo->phys_proc_id;
10965                 cpup->core_id = cpuinfo->cpu_core_id;
10966                 if (lpfc_find_hyper(phba, cpu, cpup->phys_id, cpup->core_id))
10967                         cpup->flag |= LPFC_CPU_MAP_HYPER;
10968 #else
10969                 /* No distinction between CPUs for other platforms */
10970                 cpup->phys_id = 0;
10971                 cpup->core_id = cpu;
10972 #endif
10973
10974                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10975                                 "3328 CPU %d physid %d coreid %d flag x%x\n",
10976                                 cpu, cpup->phys_id, cpup->core_id, cpup->flag);
10977
10978                 if (cpup->phys_id > max_phys_id)
10979                         max_phys_id = cpup->phys_id;
10980                 if (cpup->phys_id < min_phys_id)
10981                         min_phys_id = cpup->phys_id;
10982
10983                 if (cpup->core_id > max_core_id)
10984                         max_core_id = cpup->core_id;
10985                 if (cpup->core_id < min_core_id)
10986                         min_core_id = cpup->core_id;
10987         }
10988
10989         /* After looking at each irq vector assigned to this pcidev, its
10990          * possible to see that not ALL CPUs have been accounted for.
10991          * Next we will set any unassigned (unaffinitized) cpu map
10992          * entries to a IRQ on the same phys_id.
10993          */
10994         first_cpu = cpumask_first(cpu_present_mask);
10995         start_cpu = first_cpu;
10996
10997         for_each_present_cpu(cpu) {
10998                 cpup = &phba->sli4_hba.cpu_map[cpu];
10999
11000                 /* Is this CPU entry unassigned */
11001                 if (cpup->eq == LPFC_VECTOR_MAP_EMPTY) {
11002                         /* Mark CPU as IRQ not assigned by the kernel */
11003                         cpup->flag |= LPFC_CPU_MAP_UNASSIGN;
11004
11005                         /* If so, find a new_cpup thats on the the SAME
11006                          * phys_id as cpup. start_cpu will start where we
11007                          * left off so all unassigned entries don't get assgined
11008                          * the IRQ of the first entry.
11009                          */
11010                         new_cpu = start_cpu;
11011                         for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
11012                                 new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
11013                                 if (!(new_cpup->flag & LPFC_CPU_MAP_UNASSIGN) &&
11014                                     (new_cpup->eq != LPFC_VECTOR_MAP_EMPTY) &&
11015                                     (new_cpup->phys_id == cpup->phys_id))
11016                                         goto found_same;
11017                                 new_cpu = cpumask_next(
11018                                         new_cpu, cpu_present_mask);
11019                                 if (new_cpu == nr_cpumask_bits)
11020                                         new_cpu = first_cpu;
11021                         }
11022                         /* At this point, we leave the CPU as unassigned */
11023                         continue;
11024 found_same:
11025                         /* We found a matching phys_id, so copy the IRQ info */
11026                         cpup->eq = new_cpup->eq;
11027
11028                         /* Bump start_cpu to the next slot to minmize the
11029                          * chance of having multiple unassigned CPU entries
11030                          * selecting the same IRQ.
11031                          */
11032                         start_cpu = cpumask_next(new_cpu, cpu_present_mask);
11033                         if (start_cpu == nr_cpumask_bits)
11034                                 start_cpu = first_cpu;
11035
11036                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11037                                         "3337 Set Affinity: CPU %d "
11038                                         "eq %d from peer cpu %d same "
11039                                         "phys_id (%d)\n",
11040                                         cpu, cpup->eq, new_cpu,
11041                                         cpup->phys_id);
11042                 }
11043         }
11044
11045         /* Set any unassigned cpu map entries to a IRQ on any phys_id */
11046         start_cpu = first_cpu;
11047
11048         for_each_present_cpu(cpu) {
11049                 cpup = &phba->sli4_hba.cpu_map[cpu];
11050
11051                 /* Is this entry unassigned */
11052                 if (cpup->eq == LPFC_VECTOR_MAP_EMPTY) {
11053                         /* Mark it as IRQ not assigned by the kernel */
11054                         cpup->flag |= LPFC_CPU_MAP_UNASSIGN;
11055
11056                         /* If so, find a new_cpup thats on ANY phys_id
11057                          * as the cpup. start_cpu will start where we
11058                          * left off so all unassigned entries don't get
11059                          * assigned the IRQ of the first entry.
11060                          */
11061                         new_cpu = start_cpu;
11062                         for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
11063                                 new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
11064                                 if (!(new_cpup->flag & LPFC_CPU_MAP_UNASSIGN) &&
11065                                     (new_cpup->eq != LPFC_VECTOR_MAP_EMPTY))
11066                                         goto found_any;
11067                                 new_cpu = cpumask_next(
11068                                         new_cpu, cpu_present_mask);
11069                                 if (new_cpu == nr_cpumask_bits)
11070                                         new_cpu = first_cpu;
11071                         }
11072                         /* We should never leave an entry unassigned */
11073                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
11074                                         "3339 Set Affinity: CPU %d "
11075                                         "eq %d UNASSIGNED\n",
11076                                         cpup->hdwq, cpup->eq);
11077                         continue;
11078 found_any:
11079                         /* We found an available entry, copy the IRQ info */
11080                         cpup->eq = new_cpup->eq;
11081
11082                         /* Bump start_cpu to the next slot to minmize the
11083                          * chance of having multiple unassigned CPU entries
11084                          * selecting the same IRQ.
11085                          */
11086                         start_cpu = cpumask_next(new_cpu, cpu_present_mask);
11087                         if (start_cpu == nr_cpumask_bits)
11088                                 start_cpu = first_cpu;
11089
11090                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11091                                         "3338 Set Affinity: CPU %d "
11092                                         "eq %d from peer cpu %d (%d/%d)\n",
11093                                         cpu, cpup->eq, new_cpu,
11094                                         new_cpup->phys_id, new_cpup->core_id);
11095                 }
11096         }
11097
11098         /* Assign hdwq indices that are unique across all cpus in the map
11099          * that are also FIRST_CPUs.
11100          */
11101         idx = 0;
11102         for_each_present_cpu(cpu) {
11103                 cpup = &phba->sli4_hba.cpu_map[cpu];
11104
11105                 /* Only FIRST IRQs get a hdwq index assignment. */
11106                 if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
11107                         continue;
11108
11109                 /* 1 to 1, the first LPFC_CPU_FIRST_IRQ cpus to a unique hdwq */
11110                 cpup->hdwq = idx;
11111                 idx++;
11112                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11113                                 "3333 Set Affinity: CPU %d (phys %d core %d): "
11114                                 "hdwq %d eq %d flg x%x\n",
11115                                 cpu, cpup->phys_id, cpup->core_id,
11116                                 cpup->hdwq, cpup->eq, cpup->flag);
11117         }
11118         /* Associate a hdwq with each cpu_map entry
11119          * This will be 1 to 1 - hdwq to cpu, unless there are less
11120          * hardware queues then CPUs. For that case we will just round-robin
11121          * the available hardware queues as they get assigned to CPUs.
11122          * The next_idx is the idx from the FIRST_CPU loop above to account
11123          * for irq_chann < hdwq.  The idx is used for round-robin assignments
11124          * and needs to start at 0.
11125          */
11126         next_idx = idx;
11127         start_cpu = 0;
11128         idx = 0;
11129         for_each_present_cpu(cpu) {
11130                 cpup = &phba->sli4_hba.cpu_map[cpu];
11131
11132                 /* FIRST cpus are already mapped. */
11133                 if (cpup->flag & LPFC_CPU_FIRST_IRQ)
11134                         continue;
11135
11136                 /* If the cfg_irq_chann < cfg_hdw_queue, set the hdwq
11137                  * of the unassigned cpus to the next idx so that all
11138                  * hdw queues are fully utilized.
11139                  */
11140                 if (next_idx < phba->cfg_hdw_queue) {
11141                         cpup->hdwq = next_idx;
11142                         next_idx++;
11143                         continue;
11144                 }
11145
11146                 /* Not a First CPU and all hdw_queues are used.  Reuse a
11147                  * Hardware Queue for another CPU, so be smart about it
11148                  * and pick one that has its IRQ/EQ mapped to the same phys_id
11149                  * (CPU package) and core_id.
11150                  */
11151                 new_cpu = start_cpu;
11152                 for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
11153                         new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
11154                         if (new_cpup->hdwq != LPFC_VECTOR_MAP_EMPTY &&
11155                             new_cpup->phys_id == cpup->phys_id &&
11156                             new_cpup->core_id == cpup->core_id) {
11157                                 goto found_hdwq;
11158                         }
11159                         new_cpu = cpumask_next(new_cpu, cpu_present_mask);
11160                         if (new_cpu == nr_cpumask_bits)
11161                                 new_cpu = first_cpu;
11162                 }
11163
11164                 /* If we can't match both phys_id and core_id,
11165                  * settle for just a phys_id match.
11166                  */
11167                 new_cpu = start_cpu;
11168                 for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
11169                         new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
11170                         if (new_cpup->hdwq != LPFC_VECTOR_MAP_EMPTY &&
11171                             new_cpup->phys_id == cpup->phys_id)
11172                                 goto found_hdwq;
11173
11174                         new_cpu = cpumask_next(new_cpu, cpu_present_mask);
11175                         if (new_cpu == nr_cpumask_bits)
11176                                 new_cpu = first_cpu;
11177                 }
11178
11179                 /* Otherwise just round robin on cfg_hdw_queue */
11180                 cpup->hdwq = idx % phba->cfg_hdw_queue;
11181                 idx++;
11182                 goto logit;
11183  found_hdwq:
11184                 /* We found an available entry, copy the IRQ info */
11185                 start_cpu = cpumask_next(new_cpu, cpu_present_mask);
11186                 if (start_cpu == nr_cpumask_bits)
11187                         start_cpu = first_cpu;
11188                 cpup->hdwq = new_cpup->hdwq;
11189  logit:
11190                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11191                                 "3335 Set Affinity: CPU %d (phys %d core %d): "
11192                                 "hdwq %d eq %d flg x%x\n",
11193                                 cpu, cpup->phys_id, cpup->core_id,
11194                                 cpup->hdwq, cpup->eq, cpup->flag);
11195         }
11196
11197         /*
11198          * Initialize the cpu_map slots for not-present cpus in case
11199          * a cpu is hot-added. Perform a simple hdwq round robin assignment.
11200          */
11201         idx = 0;
11202         for_each_possible_cpu(cpu) {
11203                 cpup = &phba->sli4_hba.cpu_map[cpu];
11204 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
11205                 c_stat = per_cpu_ptr(phba->sli4_hba.c_stat, cpu);
11206                 c_stat->hdwq_no = cpup->hdwq;
11207 #endif
11208                 if (cpup->hdwq != LPFC_VECTOR_MAP_EMPTY)
11209                         continue;
11210
11211                 cpup->hdwq = idx++ % phba->cfg_hdw_queue;
11212 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
11213                 c_stat->hdwq_no = cpup->hdwq;
11214 #endif
11215                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11216                                 "3340 Set Affinity: not present "
11217                                 "CPU %d hdwq %d\n",
11218                                 cpu, cpup->hdwq);
11219         }
11220
11221         /* The cpu_map array will be used later during initialization
11222          * when EQ / CQ / WQs are allocated and configured.
11223          */
11224         return;
11225 }
11226
11227 /**
11228  * lpfc_cpuhp_get_eq
11229  *
11230  * @phba:   pointer to lpfc hba data structure.
11231  * @cpu:    cpu going offline
11232  * @eqlist: eq list to append to
11233  */
11234 static int
11235 lpfc_cpuhp_get_eq(struct lpfc_hba *phba, unsigned int cpu,
11236                   struct list_head *eqlist)
11237 {
11238         const struct cpumask *maskp;
11239         struct lpfc_queue *eq;
11240         struct cpumask *tmp;
11241         u16 idx;
11242
11243         tmp = kzalloc(cpumask_size(), GFP_KERNEL);
11244         if (!tmp)
11245                 return -ENOMEM;
11246
11247         for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
11248                 maskp = pci_irq_get_affinity(phba->pcidev, idx);
11249                 if (!maskp)
11250                         continue;
11251                 /*
11252                  * if irq is not affinitized to the cpu going
11253                  * then we don't need to poll the eq attached
11254                  * to it.
11255                  */
11256                 if (!cpumask_and(tmp, maskp, cpumask_of(cpu)))
11257                         continue;
11258                 /* get the cpus that are online and are affini-
11259                  * tized to this irq vector.  If the count is
11260                  * more than 1 then cpuhp is not going to shut-
11261                  * down this vector.  Since this cpu has not
11262                  * gone offline yet, we need >1.
11263                  */
11264                 cpumask_and(tmp, maskp, cpu_online_mask);
11265                 if (cpumask_weight(tmp) > 1)
11266                         continue;
11267
11268                 /* Now that we have an irq to shutdown, get the eq
11269                  * mapped to this irq.  Note: multiple hdwq's in
11270                  * the software can share an eq, but eventually
11271                  * only eq will be mapped to this vector
11272                  */
11273                 eq = phba->sli4_hba.hba_eq_hdl[idx].eq;
11274                 list_add(&eq->_poll_list, eqlist);
11275         }
11276         kfree(tmp);
11277         return 0;
11278 }
11279
11280 static void __lpfc_cpuhp_remove(struct lpfc_hba *phba)
11281 {
11282         if (phba->sli_rev != LPFC_SLI_REV4)
11283                 return;
11284
11285         cpuhp_state_remove_instance_nocalls(lpfc_cpuhp_state,
11286                                             &phba->cpuhp);
11287         /*
11288          * unregistering the instance doesn't stop the polling
11289          * timer. Wait for the poll timer to retire.
11290          */
11291         synchronize_rcu();
11292         del_timer_sync(&phba->cpuhp_poll_timer);
11293 }
11294
11295 static void lpfc_cpuhp_remove(struct lpfc_hba *phba)
11296 {
11297         if (phba->pport->fc_flag & FC_OFFLINE_MODE)
11298                 return;
11299
11300         __lpfc_cpuhp_remove(phba);
11301 }
11302
11303 static void lpfc_cpuhp_add(struct lpfc_hba *phba)
11304 {
11305         if (phba->sli_rev != LPFC_SLI_REV4)
11306                 return;
11307
11308         rcu_read_lock();
11309
11310         if (!list_empty(&phba->poll_list))
11311                 mod_timer(&phba->cpuhp_poll_timer,
11312                           jiffies + msecs_to_jiffies(LPFC_POLL_HB));
11313
11314         rcu_read_unlock();
11315
11316         cpuhp_state_add_instance_nocalls(lpfc_cpuhp_state,
11317                                          &phba->cpuhp);
11318 }
11319
11320 static int __lpfc_cpuhp_checks(struct lpfc_hba *phba, int *retval)
11321 {
11322         if (phba->pport->load_flag & FC_UNLOADING) {
11323                 *retval = -EAGAIN;
11324                 return true;
11325         }
11326
11327         if (phba->sli_rev != LPFC_SLI_REV4) {
11328                 *retval = 0;
11329                 return true;
11330         }
11331
11332         /* proceed with the hotplug */
11333         return false;
11334 }
11335
11336 /**
11337  * lpfc_irq_set_aff - set IRQ affinity
11338  * @eqhdl: EQ handle
11339  * @cpu: cpu to set affinity
11340  *
11341  **/
11342 static inline void
11343 lpfc_irq_set_aff(struct lpfc_hba_eq_hdl *eqhdl, unsigned int cpu)
11344 {
11345         cpumask_clear(&eqhdl->aff_mask);
11346         cpumask_set_cpu(cpu, &eqhdl->aff_mask);
11347         irq_set_status_flags(eqhdl->irq, IRQ_NO_BALANCING);
11348         irq_set_affinity_hint(eqhdl->irq, &eqhdl->aff_mask);
11349 }
11350
11351 /**
11352  * lpfc_irq_clear_aff - clear IRQ affinity
11353  * @eqhdl: EQ handle
11354  *
11355  **/
11356 static inline void
11357 lpfc_irq_clear_aff(struct lpfc_hba_eq_hdl *eqhdl)
11358 {
11359         cpumask_clear(&eqhdl->aff_mask);
11360         irq_clear_status_flags(eqhdl->irq, IRQ_NO_BALANCING);
11361 }
11362
11363 /**
11364  * lpfc_irq_rebalance - rebalances IRQ affinity according to cpuhp event
11365  * @phba: pointer to HBA context object.
11366  * @cpu: cpu going offline/online
11367  * @offline: true, cpu is going offline. false, cpu is coming online.
11368  *
11369  * If cpu is going offline, we'll try our best effort to find the next
11370  * online cpu on the phba's original_mask and migrate all offlining IRQ
11371  * affinities.
11372  *
11373  * If cpu is coming online, reaffinitize the IRQ back to the onlining cpu.
11374  *
11375  * Note: Call only if NUMA or NHT mode is enabled, otherwise rely on
11376  *       PCI_IRQ_AFFINITY to auto-manage IRQ affinity.
11377  *
11378  **/
11379 static void
11380 lpfc_irq_rebalance(struct lpfc_hba *phba, unsigned int cpu, bool offline)
11381 {
11382         struct lpfc_vector_map_info *cpup;
11383         struct cpumask *aff_mask;
11384         unsigned int cpu_select, cpu_next, idx;
11385         const struct cpumask *orig_mask;
11386
11387         if (phba->irq_chann_mode == NORMAL_MODE)
11388                 return;
11389
11390         orig_mask = &phba->sli4_hba.irq_aff_mask;
11391
11392         if (!cpumask_test_cpu(cpu, orig_mask))
11393                 return;
11394
11395         cpup = &phba->sli4_hba.cpu_map[cpu];
11396
11397         if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
11398                 return;
11399
11400         if (offline) {
11401                 /* Find next online CPU on original mask */
11402                 cpu_next = cpumask_next_wrap(cpu, orig_mask, cpu, true);
11403                 cpu_select = lpfc_next_online_cpu(orig_mask, cpu_next);
11404
11405                 /* Found a valid CPU */
11406                 if ((cpu_select < nr_cpu_ids) && (cpu_select != cpu)) {
11407                         /* Go through each eqhdl and ensure offlining
11408                          * cpu aff_mask is migrated
11409                          */
11410                         for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
11411                                 aff_mask = lpfc_get_aff_mask(idx);
11412
11413                                 /* Migrate affinity */
11414                                 if (cpumask_test_cpu(cpu, aff_mask))
11415                                         lpfc_irq_set_aff(lpfc_get_eq_hdl(idx),
11416                                                          cpu_select);
11417                         }
11418                 } else {
11419                         /* Rely on irqbalance if no online CPUs left on NUMA */
11420                         for (idx = 0; idx < phba->cfg_irq_chann; idx++)
11421                                 lpfc_irq_clear_aff(lpfc_get_eq_hdl(idx));
11422                 }
11423         } else {
11424                 /* Migrate affinity back to this CPU */
11425                 lpfc_irq_set_aff(lpfc_get_eq_hdl(cpup->eq), cpu);
11426         }
11427 }
11428
11429 static int lpfc_cpu_offline(unsigned int cpu, struct hlist_node *node)
11430 {
11431         struct lpfc_hba *phba = hlist_entry_safe(node, struct lpfc_hba, cpuhp);
11432         struct lpfc_queue *eq, *next;
11433         LIST_HEAD(eqlist);
11434         int retval;
11435
11436         if (!phba) {
11437                 WARN_ONCE(!phba, "cpu: %u. phba:NULL", raw_smp_processor_id());
11438                 return 0;
11439         }
11440
11441         if (__lpfc_cpuhp_checks(phba, &retval))
11442                 return retval;
11443
11444         lpfc_irq_rebalance(phba, cpu, true);
11445
11446         retval = lpfc_cpuhp_get_eq(phba, cpu, &eqlist);
11447         if (retval)
11448                 return retval;
11449
11450         /* start polling on these eq's */
11451         list_for_each_entry_safe(eq, next, &eqlist, _poll_list) {
11452                 list_del_init(&eq->_poll_list);
11453                 lpfc_sli4_start_polling(eq);
11454         }
11455
11456         return 0;
11457 }
11458
11459 static int lpfc_cpu_online(unsigned int cpu, struct hlist_node *node)
11460 {
11461         struct lpfc_hba *phba = hlist_entry_safe(node, struct lpfc_hba, cpuhp);
11462         struct lpfc_queue *eq, *next;
11463         unsigned int n;
11464         int retval;
11465
11466         if (!phba) {
11467                 WARN_ONCE(!phba, "cpu: %u. phba:NULL", raw_smp_processor_id());
11468                 return 0;
11469         }
11470
11471         if (__lpfc_cpuhp_checks(phba, &retval))
11472                 return retval;
11473
11474         lpfc_irq_rebalance(phba, cpu, false);
11475
11476         list_for_each_entry_safe(eq, next, &phba->poll_list, _poll_list) {
11477                 n = lpfc_find_cpu_handle(phba, eq->hdwq, LPFC_FIND_BY_HDWQ);
11478                 if (n == cpu)
11479                         lpfc_sli4_stop_polling(eq);
11480         }
11481
11482         return 0;
11483 }
11484
11485 /**
11486  * lpfc_sli4_enable_msix - Enable MSI-X interrupt mode to SLI-4 device
11487  * @phba: pointer to lpfc hba data structure.
11488  *
11489  * This routine is invoked to enable the MSI-X interrupt vectors to device
11490  * with SLI-4 interface spec.  It also allocates MSI-X vectors and maps them
11491  * to cpus on the system.
11492  *
11493  * When cfg_irq_numa is enabled, the adapter will only allocate vectors for
11494  * the number of cpus on the same numa node as this adapter.  The vectors are
11495  * allocated without requesting OS affinity mapping.  A vector will be
11496  * allocated and assigned to each online and offline cpu.  If the cpu is
11497  * online, then affinity will be set to that cpu.  If the cpu is offline, then
11498  * affinity will be set to the nearest peer cpu within the numa node that is
11499  * online.  If there are no online cpus within the numa node, affinity is not
11500  * assigned and the OS may do as it pleases. Note: cpu vector affinity mapping
11501  * is consistent with the way cpu online/offline is handled when cfg_irq_numa is
11502  * configured.
11503  *
11504  * If numa mode is not enabled and there is more than 1 vector allocated, then
11505  * the driver relies on the managed irq interface where the OS assigns vector to
11506  * cpu affinity.  The driver will then use that affinity mapping to setup its
11507  * cpu mapping table.
11508  *
11509  * Return codes
11510  * 0 - successful
11511  * other values - error
11512  **/
11513 static int
11514 lpfc_sli4_enable_msix(struct lpfc_hba *phba)
11515 {
11516         int vectors, rc, index;
11517         char *name;
11518         const struct cpumask *aff_mask = NULL;
11519         unsigned int cpu = 0, cpu_cnt = 0, cpu_select = nr_cpu_ids;
11520         struct lpfc_vector_map_info *cpup;
11521         struct lpfc_hba_eq_hdl *eqhdl;
11522         const struct cpumask *maskp;
11523         unsigned int flags = PCI_IRQ_MSIX;
11524
11525         /* Set up MSI-X multi-message vectors */
11526         vectors = phba->cfg_irq_chann;
11527
11528         if (phba->irq_chann_mode != NORMAL_MODE)
11529                 aff_mask = &phba->sli4_hba.irq_aff_mask;
11530
11531         if (aff_mask) {
11532                 cpu_cnt = cpumask_weight(aff_mask);
11533                 vectors = min(phba->cfg_irq_chann, cpu_cnt);
11534
11535                 /* cpu: iterates over aff_mask including offline or online
11536                  * cpu_select: iterates over online aff_mask to set affinity
11537                  */
11538                 cpu = cpumask_first(aff_mask);
11539                 cpu_select = lpfc_next_online_cpu(aff_mask, cpu);
11540         } else {
11541                 flags |= PCI_IRQ_AFFINITY;
11542         }
11543
11544         rc = pci_alloc_irq_vectors(phba->pcidev, 1, vectors, flags);
11545         if (rc < 0) {
11546                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11547                                 "0484 PCI enable MSI-X failed (%d)\n", rc);
11548                 goto vec_fail_out;
11549         }
11550         vectors = rc;
11551
11552         /* Assign MSI-X vectors to interrupt handlers */
11553         for (index = 0; index < vectors; index++) {
11554                 eqhdl = lpfc_get_eq_hdl(index);
11555                 name = eqhdl->handler_name;
11556                 memset(name, 0, LPFC_SLI4_HANDLER_NAME_SZ);
11557                 snprintf(name, LPFC_SLI4_HANDLER_NAME_SZ,
11558                          LPFC_DRIVER_HANDLER_NAME"%d", index);
11559
11560                 eqhdl->idx = index;
11561                 rc = request_irq(pci_irq_vector(phba->pcidev, index),
11562                          &lpfc_sli4_hba_intr_handler, 0,
11563                          name, eqhdl);
11564                 if (rc) {
11565                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
11566                                         "0486 MSI-X fast-path (%d) "
11567                                         "request_irq failed (%d)\n", index, rc);
11568                         goto cfg_fail_out;
11569                 }
11570
11571                 eqhdl->irq = pci_irq_vector(phba->pcidev, index);
11572
11573                 if (aff_mask) {
11574                         /* If found a neighboring online cpu, set affinity */
11575                         if (cpu_select < nr_cpu_ids)
11576                                 lpfc_irq_set_aff(eqhdl, cpu_select);
11577
11578                         /* Assign EQ to cpu_map */
11579                         lpfc_assign_eq_map_info(phba, index,
11580                                                 LPFC_CPU_FIRST_IRQ,
11581                                                 cpu);
11582
11583                         /* Iterate to next offline or online cpu in aff_mask */
11584                         cpu = cpumask_next(cpu, aff_mask);
11585
11586                         /* Find next online cpu in aff_mask to set affinity */
11587                         cpu_select = lpfc_next_online_cpu(aff_mask, cpu);
11588                 } else if (vectors == 1) {
11589                         cpu = cpumask_first(cpu_present_mask);
11590                         lpfc_assign_eq_map_info(phba, index, LPFC_CPU_FIRST_IRQ,
11591                                                 cpu);
11592                 } else {
11593                         maskp = pci_irq_get_affinity(phba->pcidev, index);
11594
11595                         /* Loop through all CPUs associated with vector index */
11596                         for_each_cpu_and(cpu, maskp, cpu_present_mask) {
11597                                 cpup = &phba->sli4_hba.cpu_map[cpu];
11598
11599                                 /* If this is the first CPU thats assigned to
11600                                  * this vector, set LPFC_CPU_FIRST_IRQ.
11601                                  *
11602                                  * With certain platforms its possible that irq
11603                                  * vectors are affinitized to all the cpu's.
11604                                  * This can result in each cpu_map.eq to be set
11605                                  * to the last vector, resulting in overwrite
11606                                  * of all the previous cpu_map.eq.  Ensure that
11607                                  * each vector receives a place in cpu_map.
11608                                  * Later call to lpfc_cpu_affinity_check will
11609                                  * ensure we are nicely balanced out.
11610                                  */
11611                                 if (cpup->eq != LPFC_VECTOR_MAP_EMPTY)
11612                                         continue;
11613                                 lpfc_assign_eq_map_info(phba, index,
11614                                                         LPFC_CPU_FIRST_IRQ,
11615                                                         cpu);
11616                                 break;
11617                         }
11618                 }
11619         }
11620
11621         if (vectors != phba->cfg_irq_chann) {
11622                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11623                                 "3238 Reducing IO channels to match number of "
11624                                 "MSI-X vectors, requested %d got %d\n",
11625                                 phba->cfg_irq_chann, vectors);
11626                 if (phba->cfg_irq_chann > vectors)
11627                         phba->cfg_irq_chann = vectors;
11628         }
11629
11630         return rc;
11631
11632 cfg_fail_out:
11633         /* free the irq already requested */
11634         for (--index; index >= 0; index--) {
11635                 eqhdl = lpfc_get_eq_hdl(index);
11636                 lpfc_irq_clear_aff(eqhdl);
11637                 irq_set_affinity_hint(eqhdl->irq, NULL);
11638                 free_irq(eqhdl->irq, eqhdl);
11639         }
11640
11641         /* Unconfigure MSI-X capability structure */
11642         pci_free_irq_vectors(phba->pcidev);
11643
11644 vec_fail_out:
11645         return rc;
11646 }
11647
11648 /**
11649  * lpfc_sli4_enable_msi - Enable MSI interrupt mode to SLI-4 device
11650  * @phba: pointer to lpfc hba data structure.
11651  *
11652  * This routine is invoked to enable the MSI interrupt mode to device with
11653  * SLI-4 interface spec. The kernel function pci_alloc_irq_vectors() is
11654  * called to enable the MSI vector. The device driver is responsible for
11655  * calling the request_irq() to register MSI vector with a interrupt the
11656  * handler, which is done in this function.
11657  *
11658  * Return codes
11659  *      0 - successful
11660  *      other values - error
11661  **/
11662 static int
11663 lpfc_sli4_enable_msi(struct lpfc_hba *phba)
11664 {
11665         int rc, index;
11666         unsigned int cpu;
11667         struct lpfc_hba_eq_hdl *eqhdl;
11668
11669         rc = pci_alloc_irq_vectors(phba->pcidev, 1, 1,
11670                                    PCI_IRQ_MSI | PCI_IRQ_AFFINITY);
11671         if (rc > 0)
11672                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11673                                 "0487 PCI enable MSI mode success.\n");
11674         else {
11675                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11676                                 "0488 PCI enable MSI mode failed (%d)\n", rc);
11677                 return rc ? rc : -1;
11678         }
11679
11680         rc = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
11681                          0, LPFC_DRIVER_NAME, phba);
11682         if (rc) {
11683                 pci_free_irq_vectors(phba->pcidev);
11684                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
11685                                 "0490 MSI request_irq failed (%d)\n", rc);
11686                 return rc;
11687         }
11688
11689         eqhdl = lpfc_get_eq_hdl(0);
11690         eqhdl->irq = pci_irq_vector(phba->pcidev, 0);
11691
11692         cpu = cpumask_first(cpu_present_mask);
11693         lpfc_assign_eq_map_info(phba, 0, LPFC_CPU_FIRST_IRQ, cpu);
11694
11695         for (index = 0; index < phba->cfg_irq_chann; index++) {
11696                 eqhdl = lpfc_get_eq_hdl(index);
11697                 eqhdl->idx = index;
11698         }
11699
11700         return 0;
11701 }
11702
11703 /**
11704  * lpfc_sli4_enable_intr - Enable device interrupt to SLI-4 device
11705  * @phba: pointer to lpfc hba data structure.
11706  * @cfg_mode: Interrupt configuration mode (INTx, MSI or MSI-X).
11707  *
11708  * This routine is invoked to enable device interrupt and associate driver's
11709  * interrupt handler(s) to interrupt vector(s) to device with SLI-4
11710  * interface spec. Depends on the interrupt mode configured to the driver,
11711  * the driver will try to fallback from the configured interrupt mode to an
11712  * interrupt mode which is supported by the platform, kernel, and device in
11713  * the order of:
11714  * MSI-X -> MSI -> IRQ.
11715  *
11716  * Return codes
11717  *      0 - successful
11718  *      other values - error
11719  **/
11720 static uint32_t
11721 lpfc_sli4_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
11722 {
11723         uint32_t intr_mode = LPFC_INTR_ERROR;
11724         int retval, idx;
11725
11726         if (cfg_mode == 2) {
11727                 /* Preparation before conf_msi mbox cmd */
11728                 retval = 0;
11729                 if (!retval) {
11730                         /* Now, try to enable MSI-X interrupt mode */
11731                         retval = lpfc_sli4_enable_msix(phba);
11732                         if (!retval) {
11733                                 /* Indicate initialization to MSI-X mode */
11734                                 phba->intr_type = MSIX;
11735                                 intr_mode = 2;
11736                         }
11737                 }
11738         }
11739
11740         /* Fallback to MSI if MSI-X initialization failed */
11741         if (cfg_mode >= 1 && phba->intr_type == NONE) {
11742                 retval = lpfc_sli4_enable_msi(phba);
11743                 if (!retval) {
11744                         /* Indicate initialization to MSI mode */
11745                         phba->intr_type = MSI;
11746                         intr_mode = 1;
11747                 }
11748         }
11749
11750         /* Fallback to INTx if both MSI-X/MSI initalization failed */
11751         if (phba->intr_type == NONE) {
11752                 retval = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
11753                                      IRQF_SHARED, LPFC_DRIVER_NAME, phba);
11754                 if (!retval) {
11755                         struct lpfc_hba_eq_hdl *eqhdl;
11756                         unsigned int cpu;
11757
11758                         /* Indicate initialization to INTx mode */
11759                         phba->intr_type = INTx;
11760                         intr_mode = 0;
11761
11762                         eqhdl = lpfc_get_eq_hdl(0);
11763                         eqhdl->irq = pci_irq_vector(phba->pcidev, 0);
11764
11765                         cpu = cpumask_first(cpu_present_mask);
11766                         lpfc_assign_eq_map_info(phba, 0, LPFC_CPU_FIRST_IRQ,
11767                                                 cpu);
11768                         for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
11769                                 eqhdl = lpfc_get_eq_hdl(idx);
11770                                 eqhdl->idx = idx;
11771                         }
11772                 }
11773         }
11774         return intr_mode;
11775 }
11776
11777 /**
11778  * lpfc_sli4_disable_intr - Disable device interrupt to SLI-4 device
11779  * @phba: pointer to lpfc hba data structure.
11780  *
11781  * This routine is invoked to disable device interrupt and disassociate
11782  * the driver's interrupt handler(s) from interrupt vector(s) to device
11783  * with SLI-4 interface spec. Depending on the interrupt mode, the driver
11784  * will release the interrupt vector(s) for the message signaled interrupt.
11785  **/
11786 static void
11787 lpfc_sli4_disable_intr(struct lpfc_hba *phba)
11788 {
11789         /* Disable the currently initialized interrupt mode */
11790         if (phba->intr_type == MSIX) {
11791                 int index;
11792                 struct lpfc_hba_eq_hdl *eqhdl;
11793
11794                 /* Free up MSI-X multi-message vectors */
11795                 for (index = 0; index < phba->cfg_irq_chann; index++) {
11796                         eqhdl = lpfc_get_eq_hdl(index);
11797                         lpfc_irq_clear_aff(eqhdl);
11798                         irq_set_affinity_hint(eqhdl->irq, NULL);
11799                         free_irq(eqhdl->irq, eqhdl);
11800                 }
11801         } else {
11802                 free_irq(phba->pcidev->irq, phba);
11803         }
11804
11805         pci_free_irq_vectors(phba->pcidev);
11806
11807         /* Reset interrupt management states */
11808         phba->intr_type = NONE;
11809         phba->sli.slistat.sli_intr = 0;
11810 }
11811
11812 /**
11813  * lpfc_unset_hba - Unset SLI3 hba device initialization
11814  * @phba: pointer to lpfc hba data structure.
11815  *
11816  * This routine is invoked to unset the HBA device initialization steps to
11817  * a device with SLI-3 interface spec.
11818  **/
11819 static void
11820 lpfc_unset_hba(struct lpfc_hba *phba)
11821 {
11822         struct lpfc_vport *vport = phba->pport;
11823         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
11824
11825         spin_lock_irq(shost->host_lock);
11826         vport->load_flag |= FC_UNLOADING;
11827         spin_unlock_irq(shost->host_lock);
11828
11829         kfree(phba->vpi_bmask);
11830         kfree(phba->vpi_ids);
11831
11832         lpfc_stop_hba_timers(phba);
11833
11834         phba->pport->work_port_events = 0;
11835
11836         lpfc_sli_hba_down(phba);
11837
11838         lpfc_sli_brdrestart(phba);
11839
11840         lpfc_sli_disable_intr(phba);
11841
11842         return;
11843 }
11844
11845 /**
11846  * lpfc_sli4_xri_exchange_busy_wait - Wait for device XRI exchange busy
11847  * @phba: Pointer to HBA context object.
11848  *
11849  * This function is called in the SLI4 code path to wait for completion
11850  * of device's XRIs exchange busy. It will check the XRI exchange busy
11851  * on outstanding FCP and ELS I/Os every 10ms for up to 10 seconds; after
11852  * that, it will check the XRI exchange busy on outstanding FCP and ELS
11853  * I/Os every 30 seconds, log error message, and wait forever. Only when
11854  * all XRI exchange busy complete, the driver unload shall proceed with
11855  * invoking the function reset ioctl mailbox command to the CNA and the
11856  * the rest of the driver unload resource release.
11857  **/
11858 static void
11859 lpfc_sli4_xri_exchange_busy_wait(struct lpfc_hba *phba)
11860 {
11861         struct lpfc_sli4_hdw_queue *qp;
11862         int idx, ccnt;
11863         int wait_time = 0;
11864         int io_xri_cmpl = 1;
11865         int nvmet_xri_cmpl = 1;
11866         int els_xri_cmpl = list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
11867
11868         /* Driver just aborted IOs during the hba_unset process.  Pause
11869          * here to give the HBA time to complete the IO and get entries
11870          * into the abts lists.
11871          */
11872         msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1 * 5);
11873
11874         /* Wait for NVME pending IO to flush back to transport. */
11875         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
11876                 lpfc_nvme_wait_for_io_drain(phba);
11877
11878         ccnt = 0;
11879         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
11880                 qp = &phba->sli4_hba.hdwq[idx];
11881                 io_xri_cmpl = list_empty(&qp->lpfc_abts_io_buf_list);
11882                 if (!io_xri_cmpl) /* if list is NOT empty */
11883                         ccnt++;
11884         }
11885         if (ccnt)
11886                 io_xri_cmpl = 0;
11887
11888         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
11889                 nvmet_xri_cmpl =
11890                         list_empty(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
11891         }
11892
11893         while (!els_xri_cmpl || !io_xri_cmpl || !nvmet_xri_cmpl) {
11894                 if (wait_time > LPFC_XRI_EXCH_BUSY_WAIT_TMO) {
11895                         if (!nvmet_xri_cmpl)
11896                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11897                                                 "6424 NVMET XRI exchange busy "
11898                                                 "wait time: %d seconds.\n",
11899                                                 wait_time/1000);
11900                         if (!io_xri_cmpl)
11901                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11902                                                 "6100 IO XRI exchange busy "
11903                                                 "wait time: %d seconds.\n",
11904                                                 wait_time/1000);
11905                         if (!els_xri_cmpl)
11906                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11907                                                 "2878 ELS XRI exchange busy "
11908                                                 "wait time: %d seconds.\n",
11909                                                 wait_time/1000);
11910                         msleep(LPFC_XRI_EXCH_BUSY_WAIT_T2);
11911                         wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T2;
11912                 } else {
11913                         msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1);
11914                         wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T1;
11915                 }
11916
11917                 ccnt = 0;
11918                 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
11919                         qp = &phba->sli4_hba.hdwq[idx];
11920                         io_xri_cmpl = list_empty(
11921                             &qp->lpfc_abts_io_buf_list);
11922                         if (!io_xri_cmpl) /* if list is NOT empty */
11923                                 ccnt++;
11924                 }
11925                 if (ccnt)
11926                         io_xri_cmpl = 0;
11927
11928                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
11929                         nvmet_xri_cmpl = list_empty(
11930                                 &phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
11931                 }
11932                 els_xri_cmpl =
11933                         list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
11934
11935         }
11936 }
11937
11938 /**
11939  * lpfc_sli4_hba_unset - Unset the fcoe hba
11940  * @phba: Pointer to HBA context object.
11941  *
11942  * This function is called in the SLI4 code path to reset the HBA's FCoE
11943  * function. The caller is not required to hold any lock. This routine
11944  * issues PCI function reset mailbox command to reset the FCoE function.
11945  * At the end of the function, it calls lpfc_hba_down_post function to
11946  * free any pending commands.
11947  **/
11948 static void
11949 lpfc_sli4_hba_unset(struct lpfc_hba *phba)
11950 {
11951         int wait_cnt = 0;
11952         LPFC_MBOXQ_t *mboxq;
11953         struct pci_dev *pdev = phba->pcidev;
11954
11955         lpfc_stop_hba_timers(phba);
11956         if (phba->pport)
11957                 phba->sli4_hba.intr_enable = 0;
11958
11959         /*
11960          * Gracefully wait out the potential current outstanding asynchronous
11961          * mailbox command.
11962          */
11963
11964         /* First, block any pending async mailbox command from posted */
11965         spin_lock_irq(&phba->hbalock);
11966         phba->sli.sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;
11967         spin_unlock_irq(&phba->hbalock);
11968         /* Now, trying to wait it out if we can */
11969         while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
11970                 msleep(10);
11971                 if (++wait_cnt > LPFC_ACTIVE_MBOX_WAIT_CNT)
11972                         break;
11973         }
11974         /* Forcefully release the outstanding mailbox command if timed out */
11975         if (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
11976                 spin_lock_irq(&phba->hbalock);
11977                 mboxq = phba->sli.mbox_active;
11978                 mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED;
11979                 __lpfc_mbox_cmpl_put(phba, mboxq);
11980                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
11981                 phba->sli.mbox_active = NULL;
11982                 spin_unlock_irq(&phba->hbalock);
11983         }
11984
11985         /* Abort all iocbs associated with the hba */
11986         lpfc_sli_hba_iocb_abort(phba);
11987
11988         /* Wait for completion of device XRI exchange busy */
11989         lpfc_sli4_xri_exchange_busy_wait(phba);
11990
11991         /* per-phba callback de-registration for hotplug event */
11992         if (phba->pport)
11993                 lpfc_cpuhp_remove(phba);
11994
11995         /* Disable PCI subsystem interrupt */
11996         lpfc_sli4_disable_intr(phba);
11997
11998         /* Disable SR-IOV if enabled */
11999         if (phba->cfg_sriov_nr_virtfn)
12000                 pci_disable_sriov(pdev);
12001
12002         /* Stop kthread signal shall trigger work_done one more time */
12003         kthread_stop(phba->worker_thread);
12004
12005         /* Disable FW logging to host memory */
12006         lpfc_ras_stop_fwlog(phba);
12007
12008         /* Unset the queues shared with the hardware then release all
12009          * allocated resources.
12010          */
12011         lpfc_sli4_queue_unset(phba);
12012         lpfc_sli4_queue_destroy(phba);
12013
12014         /* Reset SLI4 HBA FCoE function */
12015         lpfc_pci_function_reset(phba);
12016
12017         /* Free RAS DMA memory */
12018         if (phba->ras_fwlog.ras_enabled)
12019                 lpfc_sli4_ras_dma_free(phba);
12020
12021         /* Stop the SLI4 device port */
12022         if (phba->pport)
12023                 phba->pport->work_port_events = 0;
12024 }
12025
12026 /**
12027  * lpfc_get_sli4_parameters - Get the SLI4 Config PARAMETERS.
12028  * @phba: Pointer to HBA context object.
12029  * @mboxq: Pointer to the mailboxq memory for the mailbox command response.
12030  *
12031  * This function is called in the SLI4 code path to read the port's
12032  * sli4 capabilities.
12033  *
12034  * This function may be be called from any context that can block-wait
12035  * for the completion.  The expectation is that this routine is called
12036  * typically from probe_one or from the online routine.
12037  **/
12038 int
12039 lpfc_get_sli4_parameters(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
12040 {
12041         int rc;
12042         struct lpfc_mqe *mqe = &mboxq->u.mqe;
12043         struct lpfc_pc_sli4_params *sli4_params;
12044         uint32_t mbox_tmo;
12045         int length;
12046         bool exp_wqcq_pages = true;
12047         struct lpfc_sli4_parameters *mbx_sli4_parameters;
12048
12049         /*
12050          * By default, the driver assumes the SLI4 port requires RPI
12051          * header postings.  The SLI4_PARAM response will correct this
12052          * assumption.
12053          */
12054         phba->sli4_hba.rpi_hdrs_in_use = 1;
12055
12056         /* Read the port's SLI4 Config Parameters */
12057         length = (sizeof(struct lpfc_mbx_get_sli4_parameters) -
12058                   sizeof(struct lpfc_sli4_cfg_mhdr));
12059         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
12060                          LPFC_MBOX_OPCODE_GET_SLI4_PARAMETERS,
12061                          length, LPFC_SLI4_MBX_EMBED);
12062         if (!phba->sli4_hba.intr_enable)
12063                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
12064         else {
12065                 mbox_tmo = lpfc_mbox_tmo_val(phba, mboxq);
12066                 rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
12067         }
12068         if (unlikely(rc))
12069                 return rc;
12070         sli4_params = &phba->sli4_hba.pc_sli4_params;
12071         mbx_sli4_parameters = &mqe->un.get_sli4_parameters.sli4_parameters;
12072         sli4_params->if_type = bf_get(cfg_if_type, mbx_sli4_parameters);
12073         sli4_params->sli_rev = bf_get(cfg_sli_rev, mbx_sli4_parameters);
12074         sli4_params->sli_family = bf_get(cfg_sli_family, mbx_sli4_parameters);
12075         sli4_params->featurelevel_1 = bf_get(cfg_sli_hint_1,
12076                                              mbx_sli4_parameters);
12077         sli4_params->featurelevel_2 = bf_get(cfg_sli_hint_2,
12078                                              mbx_sli4_parameters);
12079         if (bf_get(cfg_phwq, mbx_sli4_parameters))
12080                 phba->sli3_options |= LPFC_SLI4_PHWQ_ENABLED;
12081         else
12082                 phba->sli3_options &= ~LPFC_SLI4_PHWQ_ENABLED;
12083         sli4_params->sge_supp_len = mbx_sli4_parameters->sge_supp_len;
12084         sli4_params->loopbk_scope = bf_get(cfg_loopbk_scope,
12085                                            mbx_sli4_parameters);
12086         sli4_params->oas_supported = bf_get(cfg_oas, mbx_sli4_parameters);
12087         sli4_params->cqv = bf_get(cfg_cqv, mbx_sli4_parameters);
12088         sli4_params->mqv = bf_get(cfg_mqv, mbx_sli4_parameters);
12089         sli4_params->wqv = bf_get(cfg_wqv, mbx_sli4_parameters);
12090         sli4_params->rqv = bf_get(cfg_rqv, mbx_sli4_parameters);
12091         sli4_params->eqav = bf_get(cfg_eqav, mbx_sli4_parameters);
12092         sli4_params->cqav = bf_get(cfg_cqav, mbx_sli4_parameters);
12093         sli4_params->wqsize = bf_get(cfg_wqsize, mbx_sli4_parameters);
12094         sli4_params->bv1s = bf_get(cfg_bv1s, mbx_sli4_parameters);
12095         sli4_params->pls = bf_get(cfg_pvl, mbx_sli4_parameters);
12096         sli4_params->sgl_pages_max = bf_get(cfg_sgl_page_cnt,
12097                                             mbx_sli4_parameters);
12098         sli4_params->wqpcnt = bf_get(cfg_wqpcnt, mbx_sli4_parameters);
12099         sli4_params->sgl_pp_align = bf_get(cfg_sgl_pp_align,
12100                                            mbx_sli4_parameters);
12101         phba->sli4_hba.extents_in_use = bf_get(cfg_ext, mbx_sli4_parameters);
12102         phba->sli4_hba.rpi_hdrs_in_use = bf_get(cfg_hdrr, mbx_sli4_parameters);
12103
12104         /* Check for Extended Pre-Registered SGL support */
12105         phba->cfg_xpsgl = bf_get(cfg_xpsgl, mbx_sli4_parameters);
12106
12107         /* Check for firmware nvme support */
12108         rc = (bf_get(cfg_nvme, mbx_sli4_parameters) &&
12109                      bf_get(cfg_xib, mbx_sli4_parameters));
12110
12111         if (rc) {
12112                 /* Save this to indicate the Firmware supports NVME */
12113                 sli4_params->nvme = 1;
12114
12115                 /* Firmware NVME support, check driver FC4 NVME support */
12116                 if (phba->cfg_enable_fc4_type == LPFC_ENABLE_FCP) {
12117                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME,
12118                                         "6133 Disabling NVME support: "
12119                                         "FC4 type not supported: x%x\n",
12120                                         phba->cfg_enable_fc4_type);
12121                         goto fcponly;
12122                 }
12123         } else {
12124                 /* No firmware NVME support, check driver FC4 NVME support */
12125                 sli4_params->nvme = 0;
12126                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
12127                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_NVME,
12128                                         "6101 Disabling NVME support: Not "
12129                                         "supported by firmware (%d %d) x%x\n",
12130                                         bf_get(cfg_nvme, mbx_sli4_parameters),
12131                                         bf_get(cfg_xib, mbx_sli4_parameters),
12132                                         phba->cfg_enable_fc4_type);
12133 fcponly:
12134                         phba->nvme_support = 0;
12135                         phba->nvmet_support = 0;
12136                         phba->cfg_nvmet_mrq = 0;
12137                         phba->cfg_nvme_seg_cnt = 0;
12138
12139                         /* If no FC4 type support, move to just SCSI support */
12140                         if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
12141                                 return -ENODEV;
12142                         phba->cfg_enable_fc4_type = LPFC_ENABLE_FCP;
12143                 }
12144         }
12145
12146         /* If the NVME FC4 type is enabled, scale the sg_seg_cnt to
12147          * accommodate 512K and 1M IOs in a single nvme buf.
12148          */
12149         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
12150                 phba->cfg_sg_seg_cnt = LPFC_MAX_NVME_SEG_CNT;
12151
12152         /* Only embed PBDE for if_type 6, PBDE support requires xib be set */
12153         if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
12154             LPFC_SLI_INTF_IF_TYPE_6) || (!bf_get(cfg_xib, mbx_sli4_parameters)))
12155                 phba->cfg_enable_pbde = 0;
12156
12157         /*
12158          * To support Suppress Response feature we must satisfy 3 conditions.
12159          * lpfc_suppress_rsp module parameter must be set (default).
12160          * In SLI4-Parameters Descriptor:
12161          * Extended Inline Buffers (XIB) must be supported.
12162          * Suppress Response IU Not Supported (SRIUNS) must NOT be supported
12163          * (double negative).
12164          */
12165         if (phba->cfg_suppress_rsp && bf_get(cfg_xib, mbx_sli4_parameters) &&
12166             !(bf_get(cfg_nosr, mbx_sli4_parameters)))
12167                 phba->sli.sli_flag |= LPFC_SLI_SUPPRESS_RSP;
12168         else
12169                 phba->cfg_suppress_rsp = 0;
12170
12171         if (bf_get(cfg_eqdr, mbx_sli4_parameters))
12172                 phba->sli.sli_flag |= LPFC_SLI_USE_EQDR;
12173
12174         /* Make sure that sge_supp_len can be handled by the driver */
12175         if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE)
12176                 sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE;
12177
12178         /*
12179          * Check whether the adapter supports an embedded copy of the
12180          * FCP CMD IU within the WQE for FCP_Ixxx commands. In order
12181          * to use this option, 128-byte WQEs must be used.
12182          */
12183         if (bf_get(cfg_ext_embed_cb, mbx_sli4_parameters))
12184                 phba->fcp_embed_io = 1;
12185         else
12186                 phba->fcp_embed_io = 0;
12187
12188         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME,
12189                         "6422 XIB %d PBDE %d: FCP %d NVME %d %d %d\n",
12190                         bf_get(cfg_xib, mbx_sli4_parameters),
12191                         phba->cfg_enable_pbde,
12192                         phba->fcp_embed_io, phba->nvme_support,
12193                         phba->cfg_nvme_embed_cmd, phba->cfg_suppress_rsp);
12194
12195         if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
12196             LPFC_SLI_INTF_IF_TYPE_2) &&
12197             (bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf) ==
12198                  LPFC_SLI_INTF_FAMILY_LNCR_A0))
12199                 exp_wqcq_pages = false;
12200
12201         if ((bf_get(cfg_cqpsize, mbx_sli4_parameters) & LPFC_CQ_16K_PAGE_SZ) &&
12202             (bf_get(cfg_wqpsize, mbx_sli4_parameters) & LPFC_WQ_16K_PAGE_SZ) &&
12203             exp_wqcq_pages &&
12204             (sli4_params->wqsize & LPFC_WQ_SZ128_SUPPORT))
12205                 phba->enab_exp_wqcq_pages = 1;
12206         else
12207                 phba->enab_exp_wqcq_pages = 0;
12208         /*
12209          * Check if the SLI port supports MDS Diagnostics
12210          */
12211         if (bf_get(cfg_mds_diags, mbx_sli4_parameters))
12212                 phba->mds_diags_support = 1;
12213         else
12214                 phba->mds_diags_support = 0;
12215
12216         /*
12217          * Check if the SLI port supports NSLER
12218          */
12219         if (bf_get(cfg_nsler, mbx_sli4_parameters))
12220                 phba->nsler = 1;
12221         else
12222                 phba->nsler = 0;
12223
12224         return 0;
12225 }
12226
12227 /**
12228  * lpfc_pci_probe_one_s3 - PCI probe func to reg SLI-3 device to PCI subsystem.
12229  * @pdev: pointer to PCI device
12230  * @pid: pointer to PCI device identifier
12231  *
12232  * This routine is to be called to attach a device with SLI-3 interface spec
12233  * to the PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
12234  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
12235  * information of the device and driver to see if the driver state that it can
12236  * support this kind of device. If the match is successful, the driver core
12237  * invokes this routine. If this routine determines it can claim the HBA, it
12238  * does all the initialization that it needs to do to handle the HBA properly.
12239  *
12240  * Return code
12241  *      0 - driver can claim the device
12242  *      negative value - driver can not claim the device
12243  **/
12244 static int
12245 lpfc_pci_probe_one_s3(struct pci_dev *pdev, const struct pci_device_id *pid)
12246 {
12247         struct lpfc_hba   *phba;
12248         struct lpfc_vport *vport = NULL;
12249         struct Scsi_Host  *shost = NULL;
12250         int error;
12251         uint32_t cfg_mode, intr_mode;
12252
12253         /* Allocate memory for HBA structure */
12254         phba = lpfc_hba_alloc(pdev);
12255         if (!phba)
12256                 return -ENOMEM;
12257
12258         /* Perform generic PCI device enabling operation */
12259         error = lpfc_enable_pci_dev(phba);
12260         if (error)
12261                 goto out_free_phba;
12262
12263         /* Set up SLI API function jump table for PCI-device group-0 HBAs */
12264         error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_LP);
12265         if (error)
12266                 goto out_disable_pci_dev;
12267
12268         /* Set up SLI-3 specific device PCI memory space */
12269         error = lpfc_sli_pci_mem_setup(phba);
12270         if (error) {
12271                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12272                                 "1402 Failed to set up pci memory space.\n");
12273                 goto out_disable_pci_dev;
12274         }
12275
12276         /* Set up SLI-3 specific device driver resources */
12277         error = lpfc_sli_driver_resource_setup(phba);
12278         if (error) {
12279                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12280                                 "1404 Failed to set up driver resource.\n");
12281                 goto out_unset_pci_mem_s3;
12282         }
12283
12284         /* Initialize and populate the iocb list per host */
12285
12286         error = lpfc_init_iocb_list(phba, LPFC_IOCB_LIST_CNT);
12287         if (error) {
12288                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12289                                 "1405 Failed to initialize iocb list.\n");
12290                 goto out_unset_driver_resource_s3;
12291         }
12292
12293         /* Set up common device driver resources */
12294         error = lpfc_setup_driver_resource_phase2(phba);
12295         if (error) {
12296                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12297                                 "1406 Failed to set up driver resource.\n");
12298                 goto out_free_iocb_list;
12299         }
12300
12301         /* Get the default values for Model Name and Description */
12302         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
12303
12304         /* Create SCSI host to the physical port */
12305         error = lpfc_create_shost(phba);
12306         if (error) {
12307                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12308                                 "1407 Failed to create scsi host.\n");
12309                 goto out_unset_driver_resource;
12310         }
12311
12312         /* Configure sysfs attributes */
12313         vport = phba->pport;
12314         error = lpfc_alloc_sysfs_attr(vport);
12315         if (error) {
12316                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12317                                 "1476 Failed to allocate sysfs attr\n");
12318                 goto out_destroy_shost;
12319         }
12320
12321         shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
12322         /* Now, trying to enable interrupt and bring up the device */
12323         cfg_mode = phba->cfg_use_msi;
12324         while (true) {
12325                 /* Put device to a known state before enabling interrupt */
12326                 lpfc_stop_port(phba);
12327                 /* Configure and enable interrupt */
12328                 intr_mode = lpfc_sli_enable_intr(phba, cfg_mode);
12329                 if (intr_mode == LPFC_INTR_ERROR) {
12330                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12331                                         "0431 Failed to enable interrupt.\n");
12332                         error = -ENODEV;
12333                         goto out_free_sysfs_attr;
12334                 }
12335                 /* SLI-3 HBA setup */
12336                 if (lpfc_sli_hba_setup(phba)) {
12337                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12338                                         "1477 Failed to set up hba\n");
12339                         error = -ENODEV;
12340                         goto out_remove_device;
12341                 }
12342
12343                 /* Wait 50ms for the interrupts of previous mailbox commands */
12344                 msleep(50);
12345                 /* Check active interrupts on message signaled interrupts */
12346                 if (intr_mode == 0 ||
12347                     phba->sli.slistat.sli_intr > LPFC_MSIX_VECTORS) {
12348                         /* Log the current active interrupt mode */
12349                         phba->intr_mode = intr_mode;
12350                         lpfc_log_intr_mode(phba, intr_mode);
12351                         break;
12352                 } else {
12353                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12354                                         "0447 Configure interrupt mode (%d) "
12355                                         "failed active interrupt test.\n",
12356                                         intr_mode);
12357                         /* Disable the current interrupt mode */
12358                         lpfc_sli_disable_intr(phba);
12359                         /* Try next level of interrupt mode */
12360                         cfg_mode = --intr_mode;
12361                 }
12362         }
12363
12364         /* Perform post initialization setup */
12365         lpfc_post_init_setup(phba);
12366
12367         /* Check if there are static vports to be created. */
12368         lpfc_create_static_vport(phba);
12369
12370         return 0;
12371
12372 out_remove_device:
12373         lpfc_unset_hba(phba);
12374 out_free_sysfs_attr:
12375         lpfc_free_sysfs_attr(vport);
12376 out_destroy_shost:
12377         lpfc_destroy_shost(phba);
12378 out_unset_driver_resource:
12379         lpfc_unset_driver_resource_phase2(phba);
12380 out_free_iocb_list:
12381         lpfc_free_iocb_list(phba);
12382 out_unset_driver_resource_s3:
12383         lpfc_sli_driver_resource_unset(phba);
12384 out_unset_pci_mem_s3:
12385         lpfc_sli_pci_mem_unset(phba);
12386 out_disable_pci_dev:
12387         lpfc_disable_pci_dev(phba);
12388         if (shost)
12389                 scsi_host_put(shost);
12390 out_free_phba:
12391         lpfc_hba_free(phba);
12392         return error;
12393 }
12394
12395 /**
12396  * lpfc_pci_remove_one_s3 - PCI func to unreg SLI-3 device from PCI subsystem.
12397  * @pdev: pointer to PCI device
12398  *
12399  * This routine is to be called to disattach a device with SLI-3 interface
12400  * spec from PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
12401  * removed from PCI bus, it performs all the necessary cleanup for the HBA
12402  * device to be removed from the PCI subsystem properly.
12403  **/
12404 static void
12405 lpfc_pci_remove_one_s3(struct pci_dev *pdev)
12406 {
12407         struct Scsi_Host  *shost = pci_get_drvdata(pdev);
12408         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
12409         struct lpfc_vport **vports;
12410         struct lpfc_hba   *phba = vport->phba;
12411         int i;
12412
12413         spin_lock_irq(&phba->hbalock);
12414         vport->load_flag |= FC_UNLOADING;
12415         spin_unlock_irq(&phba->hbalock);
12416
12417         lpfc_free_sysfs_attr(vport);
12418
12419         /* Release all the vports against this physical port */
12420         vports = lpfc_create_vport_work_array(phba);
12421         if (vports != NULL)
12422                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
12423                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
12424                                 continue;
12425                         fc_vport_terminate(vports[i]->fc_vport);
12426                 }
12427         lpfc_destroy_vport_work_array(phba, vports);
12428
12429         /* Remove FC host and then SCSI host with the physical port */
12430         fc_remove_host(shost);
12431         scsi_remove_host(shost);
12432
12433         lpfc_cleanup(vport);
12434
12435         /*
12436          * Bring down the SLI Layer. This step disable all interrupts,
12437          * clears the rings, discards all mailbox commands, and resets
12438          * the HBA.
12439          */
12440
12441         /* HBA interrupt will be disabled after this call */
12442         lpfc_sli_hba_down(phba);
12443         /* Stop kthread signal shall trigger work_done one more time */
12444         kthread_stop(phba->worker_thread);
12445         /* Final cleanup of txcmplq and reset the HBA */
12446         lpfc_sli_brdrestart(phba);
12447
12448         kfree(phba->vpi_bmask);
12449         kfree(phba->vpi_ids);
12450
12451         lpfc_stop_hba_timers(phba);
12452         spin_lock_irq(&phba->port_list_lock);
12453         list_del_init(&vport->listentry);
12454         spin_unlock_irq(&phba->port_list_lock);
12455
12456         lpfc_debugfs_terminate(vport);
12457
12458         /* Disable SR-IOV if enabled */
12459         if (phba->cfg_sriov_nr_virtfn)
12460                 pci_disable_sriov(pdev);
12461
12462         /* Disable interrupt */
12463         lpfc_sli_disable_intr(phba);
12464
12465         scsi_host_put(shost);
12466
12467         /*
12468          * Call scsi_free before mem_free since scsi bufs are released to their
12469          * corresponding pools here.
12470          */
12471         lpfc_scsi_free(phba);
12472         lpfc_free_iocb_list(phba);
12473
12474         lpfc_mem_free_all(phba);
12475
12476         dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
12477                           phba->hbqslimp.virt, phba->hbqslimp.phys);
12478
12479         /* Free resources associated with SLI2 interface */
12480         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
12481                           phba->slim2p.virt, phba->slim2p.phys);
12482
12483         /* unmap adapter SLIM and Control Registers */
12484         iounmap(phba->ctrl_regs_memmap_p);
12485         iounmap(phba->slim_memmap_p);
12486
12487         lpfc_hba_free(phba);
12488
12489         pci_release_mem_regions(pdev);
12490         pci_disable_device(pdev);
12491 }
12492
12493 /**
12494  * lpfc_pci_suspend_one_s3 - PCI func to suspend SLI-3 device for power mgmnt
12495  * @pdev: pointer to PCI device
12496  * @msg: power management message
12497  *
12498  * This routine is to be called from the kernel's PCI subsystem to support
12499  * system Power Management (PM) to device with SLI-3 interface spec. When
12500  * PM invokes this method, it quiesces the device by stopping the driver's
12501  * worker thread for the device, turning off device's interrupt and DMA,
12502  * and bring the device offline. Note that as the driver implements the
12503  * minimum PM requirements to a power-aware driver's PM support for the
12504  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
12505  * to the suspend() method call will be treated as SUSPEND and the driver will
12506  * fully reinitialize its device during resume() method call, the driver will
12507  * set device to PCI_D3hot state in PCI config space instead of setting it
12508  * according to the @msg provided by the PM.
12509  *
12510  * Return code
12511  *      0 - driver suspended the device
12512  *      Error otherwise
12513  **/
12514 static int
12515 lpfc_pci_suspend_one_s3(struct pci_dev *pdev, pm_message_t msg)
12516 {
12517         struct Scsi_Host *shost = pci_get_drvdata(pdev);
12518         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
12519
12520         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12521                         "0473 PCI device Power Management suspend.\n");
12522
12523         /* Bring down the device */
12524         lpfc_offline_prep(phba, LPFC_MBX_WAIT);
12525         lpfc_offline(phba);
12526         kthread_stop(phba->worker_thread);
12527
12528         /* Disable interrupt from device */
12529         lpfc_sli_disable_intr(phba);
12530
12531         /* Save device state to PCI config space */
12532         pci_save_state(pdev);
12533         pci_set_power_state(pdev, PCI_D3hot);
12534
12535         return 0;
12536 }
12537
12538 /**
12539  * lpfc_pci_resume_one_s3 - PCI func to resume SLI-3 device for power mgmnt
12540  * @pdev: pointer to PCI device
12541  *
12542  * This routine is to be called from the kernel's PCI subsystem to support
12543  * system Power Management (PM) to device with SLI-3 interface spec. When PM
12544  * invokes this method, it restores the device's PCI config space state and
12545  * fully reinitializes the device and brings it online. Note that as the
12546  * driver implements the minimum PM requirements to a power-aware driver's
12547  * PM for suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE,
12548  * FREEZE) to the suspend() method call will be treated as SUSPEND and the
12549  * driver will fully reinitialize its device during resume() method call,
12550  * the device will be set to PCI_D0 directly in PCI config space before
12551  * restoring the state.
12552  *
12553  * Return code
12554  *      0 - driver suspended the device
12555  *      Error otherwise
12556  **/
12557 static int
12558 lpfc_pci_resume_one_s3(struct pci_dev *pdev)
12559 {
12560         struct Scsi_Host *shost = pci_get_drvdata(pdev);
12561         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
12562         uint32_t intr_mode;
12563         int error;
12564
12565         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12566                         "0452 PCI device Power Management resume.\n");
12567
12568         /* Restore device state from PCI config space */
12569         pci_set_power_state(pdev, PCI_D0);
12570         pci_restore_state(pdev);
12571
12572         /*
12573          * As the new kernel behavior of pci_restore_state() API call clears
12574          * device saved_state flag, need to save the restored state again.
12575          */
12576         pci_save_state(pdev);
12577
12578         if (pdev->is_busmaster)
12579                 pci_set_master(pdev);
12580
12581         /* Startup the kernel thread for this host adapter. */
12582         phba->worker_thread = kthread_run(lpfc_do_work, phba,
12583                                         "lpfc_worker_%d", phba->brd_no);
12584         if (IS_ERR(phba->worker_thread)) {
12585                 error = PTR_ERR(phba->worker_thread);
12586                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12587                                 "0434 PM resume failed to start worker "
12588                                 "thread: error=x%x.\n", error);
12589                 return error;
12590         }
12591
12592         /* Configure and enable interrupt */
12593         intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
12594         if (intr_mode == LPFC_INTR_ERROR) {
12595                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12596                                 "0430 PM resume Failed to enable interrupt\n");
12597                 return -EIO;
12598         } else
12599                 phba->intr_mode = intr_mode;
12600
12601         /* Restart HBA and bring it online */
12602         lpfc_sli_brdrestart(phba);
12603         lpfc_online(phba);
12604
12605         /* Log the current active interrupt mode */
12606         lpfc_log_intr_mode(phba, phba->intr_mode);
12607
12608         return 0;
12609 }
12610
12611 /**
12612  * lpfc_sli_prep_dev_for_recover - Prepare SLI3 device for pci slot recover
12613  * @phba: pointer to lpfc hba data structure.
12614  *
12615  * This routine is called to prepare the SLI3 device for PCI slot recover. It
12616  * aborts all the outstanding SCSI I/Os to the pci device.
12617  **/
12618 static void
12619 lpfc_sli_prep_dev_for_recover(struct lpfc_hba *phba)
12620 {
12621         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12622                         "2723 PCI channel I/O abort preparing for recovery\n");
12623
12624         /*
12625          * There may be errored I/Os through HBA, abort all I/Os on txcmplq
12626          * and let the SCSI mid-layer to retry them to recover.
12627          */
12628         lpfc_sli_abort_fcp_rings(phba);
12629 }
12630
12631 /**
12632  * lpfc_sli_prep_dev_for_reset - Prepare SLI3 device for pci slot reset
12633  * @phba: pointer to lpfc hba data structure.
12634  *
12635  * This routine is called to prepare the SLI3 device for PCI slot reset. It
12636  * disables the device interrupt and pci device, and aborts the internal FCP
12637  * pending I/Os.
12638  **/
12639 static void
12640 lpfc_sli_prep_dev_for_reset(struct lpfc_hba *phba)
12641 {
12642         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12643                         "2710 PCI channel disable preparing for reset\n");
12644
12645         /* Block any management I/Os to the device */
12646         lpfc_block_mgmt_io(phba, LPFC_MBX_WAIT);
12647
12648         /* Block all SCSI devices' I/Os on the host */
12649         lpfc_scsi_dev_block(phba);
12650
12651         /* Flush all driver's outstanding SCSI I/Os as we are to reset */
12652         lpfc_sli_flush_io_rings(phba);
12653
12654         /* stop all timers */
12655         lpfc_stop_hba_timers(phba);
12656
12657         /* Disable interrupt and pci device */
12658         lpfc_sli_disable_intr(phba);
12659         pci_disable_device(phba->pcidev);
12660 }
12661
12662 /**
12663  * lpfc_sli_prep_dev_for_perm_failure - Prepare SLI3 dev for pci slot disable
12664  * @phba: pointer to lpfc hba data structure.
12665  *
12666  * This routine is called to prepare the SLI3 device for PCI slot permanently
12667  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
12668  * pending I/Os.
12669  **/
12670 static void
12671 lpfc_sli_prep_dev_for_perm_failure(struct lpfc_hba *phba)
12672 {
12673         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12674                         "2711 PCI channel permanent disable for failure\n");
12675         /* Block all SCSI devices' I/Os on the host */
12676         lpfc_scsi_dev_block(phba);
12677
12678         /* stop all timers */
12679         lpfc_stop_hba_timers(phba);
12680
12681         /* Clean up all driver's outstanding SCSI I/Os */
12682         lpfc_sli_flush_io_rings(phba);
12683 }
12684
12685 /**
12686  * lpfc_io_error_detected_s3 - Method for handling SLI-3 device PCI I/O error
12687  * @pdev: pointer to PCI device.
12688  * @state: the current PCI connection state.
12689  *
12690  * This routine is called from the PCI subsystem for I/O error handling to
12691  * device with SLI-3 interface spec. This function is called by the PCI
12692  * subsystem after a PCI bus error affecting this device has been detected.
12693  * When this function is invoked, it will need to stop all the I/Os and
12694  * interrupt(s) to the device. Once that is done, it will return
12695  * PCI_ERS_RESULT_NEED_RESET for the PCI subsystem to perform proper recovery
12696  * as desired.
12697  *
12698  * Return codes
12699  *      PCI_ERS_RESULT_CAN_RECOVER - can be recovered with reset_link
12700  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
12701  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
12702  **/
12703 static pci_ers_result_t
12704 lpfc_io_error_detected_s3(struct pci_dev *pdev, pci_channel_state_t state)
12705 {
12706         struct Scsi_Host *shost = pci_get_drvdata(pdev);
12707         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
12708
12709         switch (state) {
12710         case pci_channel_io_normal:
12711                 /* Non-fatal error, prepare for recovery */
12712                 lpfc_sli_prep_dev_for_recover(phba);
12713                 return PCI_ERS_RESULT_CAN_RECOVER;
12714         case pci_channel_io_frozen:
12715                 /* Fatal error, prepare for slot reset */
12716                 lpfc_sli_prep_dev_for_reset(phba);
12717                 return PCI_ERS_RESULT_NEED_RESET;
12718         case pci_channel_io_perm_failure:
12719                 /* Permanent failure, prepare for device down */
12720                 lpfc_sli_prep_dev_for_perm_failure(phba);
12721                 return PCI_ERS_RESULT_DISCONNECT;
12722         default:
12723                 /* Unknown state, prepare and request slot reset */
12724                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12725                                 "0472 Unknown PCI error state: x%x\n", state);
12726                 lpfc_sli_prep_dev_for_reset(phba);
12727                 return PCI_ERS_RESULT_NEED_RESET;
12728         }
12729 }
12730
12731 /**
12732  * lpfc_io_slot_reset_s3 - Method for restarting PCI SLI-3 device from scratch.
12733  * @pdev: pointer to PCI device.
12734  *
12735  * This routine is called from the PCI subsystem for error handling to
12736  * device with SLI-3 interface spec. This is called after PCI bus has been
12737  * reset to restart the PCI card from scratch, as if from a cold-boot.
12738  * During the PCI subsystem error recovery, after driver returns
12739  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
12740  * recovery and then call this routine before calling the .resume method
12741  * to recover the device. This function will initialize the HBA device,
12742  * enable the interrupt, but it will just put the HBA to offline state
12743  * without passing any I/O traffic.
12744  *
12745  * Return codes
12746  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
12747  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
12748  */
12749 static pci_ers_result_t
12750 lpfc_io_slot_reset_s3(struct pci_dev *pdev)
12751 {
12752         struct Scsi_Host *shost = pci_get_drvdata(pdev);
12753         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
12754         struct lpfc_sli *psli = &phba->sli;
12755         uint32_t intr_mode;
12756
12757         dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
12758         if (pci_enable_device_mem(pdev)) {
12759                 printk(KERN_ERR "lpfc: Cannot re-enable "
12760                         "PCI device after reset.\n");
12761                 return PCI_ERS_RESULT_DISCONNECT;
12762         }
12763
12764         pci_restore_state(pdev);
12765
12766         /*
12767          * As the new kernel behavior of pci_restore_state() API call clears
12768          * device saved_state flag, need to save the restored state again.
12769          */
12770         pci_save_state(pdev);
12771
12772         if (pdev->is_busmaster)
12773                 pci_set_master(pdev);
12774
12775         spin_lock_irq(&phba->hbalock);
12776         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
12777         spin_unlock_irq(&phba->hbalock);
12778
12779         /* Configure and enable interrupt */
12780         intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
12781         if (intr_mode == LPFC_INTR_ERROR) {
12782                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12783                                 "0427 Cannot re-enable interrupt after "
12784                                 "slot reset.\n");
12785                 return PCI_ERS_RESULT_DISCONNECT;
12786         } else
12787                 phba->intr_mode = intr_mode;
12788
12789         /* Take device offline, it will perform cleanup */
12790         lpfc_offline_prep(phba, LPFC_MBX_WAIT);
12791         lpfc_offline(phba);
12792         lpfc_sli_brdrestart(phba);
12793
12794         /* Log the current active interrupt mode */
12795         lpfc_log_intr_mode(phba, phba->intr_mode);
12796
12797         return PCI_ERS_RESULT_RECOVERED;
12798 }
12799
12800 /**
12801  * lpfc_io_resume_s3 - Method for resuming PCI I/O operation on SLI-3 device.
12802  * @pdev: pointer to PCI device
12803  *
12804  * This routine is called from the PCI subsystem for error handling to device
12805  * with SLI-3 interface spec. It is called when kernel error recovery tells
12806  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
12807  * error recovery. After this call, traffic can start to flow from this device
12808  * again.
12809  */
12810 static void
12811 lpfc_io_resume_s3(struct pci_dev *pdev)
12812 {
12813         struct Scsi_Host *shost = pci_get_drvdata(pdev);
12814         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
12815
12816         /* Bring device online, it will be no-op for non-fatal error resume */
12817         lpfc_online(phba);
12818 }
12819
12820 /**
12821  * lpfc_sli4_get_els_iocb_cnt - Calculate the # of ELS IOCBs to reserve
12822  * @phba: pointer to lpfc hba data structure.
12823  *
12824  * returns the number of ELS/CT IOCBs to reserve
12825  **/
12826 int
12827 lpfc_sli4_get_els_iocb_cnt(struct lpfc_hba *phba)
12828 {
12829         int max_xri = phba->sli4_hba.max_cfg_param.max_xri;
12830
12831         if (phba->sli_rev == LPFC_SLI_REV4) {
12832                 if (max_xri <= 100)
12833                         return 10;
12834                 else if (max_xri <= 256)
12835                         return 25;
12836                 else if (max_xri <= 512)
12837                         return 50;
12838                 else if (max_xri <= 1024)
12839                         return 100;
12840                 else if (max_xri <= 1536)
12841                         return 150;
12842                 else if (max_xri <= 2048)
12843                         return 200;
12844                 else
12845                         return 250;
12846         } else
12847                 return 0;
12848 }
12849
12850 /**
12851  * lpfc_sli4_get_iocb_cnt - Calculate the # of total IOCBs to reserve
12852  * @phba: pointer to lpfc hba data structure.
12853  *
12854  * returns the number of ELS/CT + NVMET IOCBs to reserve
12855  **/
12856 int
12857 lpfc_sli4_get_iocb_cnt(struct lpfc_hba *phba)
12858 {
12859         int max_xri = lpfc_sli4_get_els_iocb_cnt(phba);
12860
12861         if (phba->nvmet_support)
12862                 max_xri += LPFC_NVMET_BUF_POST;
12863         return max_xri;
12864 }
12865
12866
12867 static int
12868 lpfc_log_write_firmware_error(struct lpfc_hba *phba, uint32_t offset,
12869         uint32_t magic_number, uint32_t ftype, uint32_t fid, uint32_t fsize,
12870         const struct firmware *fw)
12871 {
12872         int rc;
12873
12874         /* Three cases:  (1) FW was not supported on the detected adapter.
12875          * (2) FW update has been locked out administratively.
12876          * (3) Some other error during FW update.
12877          * In each case, an unmaskable message is written to the console
12878          * for admin diagnosis.
12879          */
12880         if (offset == ADD_STATUS_FW_NOT_SUPPORTED ||
12881             (phba->pcidev->device == PCI_DEVICE_ID_LANCER_G6_FC &&
12882              magic_number != MAGIC_NUMBER_G6) ||
12883             (phba->pcidev->device == PCI_DEVICE_ID_LANCER_G7_FC &&
12884              magic_number != MAGIC_NUMBER_G7)) {
12885                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12886                                 "3030 This firmware version is not supported on"
12887                                 " this HBA model. Device:%x Magic:%x Type:%x "
12888                                 "ID:%x Size %d %zd\n",
12889                                 phba->pcidev->device, magic_number, ftype, fid,
12890                                 fsize, fw->size);
12891                 rc = -EINVAL;
12892         } else if (offset == ADD_STATUS_FW_DOWNLOAD_HW_DISABLED) {
12893                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12894                                 "3021 Firmware downloads have been prohibited "
12895                                 "by a system configuration setting on "
12896                                 "Device:%x Magic:%x Type:%x ID:%x Size %d "
12897                                 "%zd\n",
12898                                 phba->pcidev->device, magic_number, ftype, fid,
12899                                 fsize, fw->size);
12900                 rc = -EACCES;
12901         } else {
12902                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12903                                 "3022 FW Download failed. Add Status x%x "
12904                                 "Device:%x Magic:%x Type:%x ID:%x Size %d "
12905                                 "%zd\n",
12906                                 offset, phba->pcidev->device, magic_number,
12907                                 ftype, fid, fsize, fw->size);
12908                 rc = -EIO;
12909         }
12910         return rc;
12911 }
12912
12913 /**
12914  * lpfc_write_firmware - attempt to write a firmware image to the port
12915  * @fw: pointer to firmware image returned from request_firmware.
12916  * @context: pointer to firmware image returned from request_firmware.
12917  *
12918  **/
12919 static void
12920 lpfc_write_firmware(const struct firmware *fw, void *context)
12921 {
12922         struct lpfc_hba *phba = (struct lpfc_hba *)context;
12923         char fwrev[FW_REV_STR_SIZE];
12924         struct lpfc_grp_hdr *image;
12925         struct list_head dma_buffer_list;
12926         int i, rc = 0;
12927         struct lpfc_dmabuf *dmabuf, *next;
12928         uint32_t offset = 0, temp_offset = 0;
12929         uint32_t magic_number, ftype, fid, fsize;
12930
12931         /* It can be null in no-wait mode, sanity check */
12932         if (!fw) {
12933                 rc = -ENXIO;
12934                 goto out;
12935         }
12936         image = (struct lpfc_grp_hdr *)fw->data;
12937
12938         magic_number = be32_to_cpu(image->magic_number);
12939         ftype = bf_get_be32(lpfc_grp_hdr_file_type, image);
12940         fid = bf_get_be32(lpfc_grp_hdr_id, image);
12941         fsize = be32_to_cpu(image->size);
12942
12943         INIT_LIST_HEAD(&dma_buffer_list);
12944         lpfc_decode_firmware_rev(phba, fwrev, 1);
12945         if (strncmp(fwrev, image->revision, strnlen(image->revision, 16))) {
12946                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12947                                 "3023 Updating Firmware, Current Version:%s "
12948                                 "New Version:%s\n",
12949                                 fwrev, image->revision);
12950                 for (i = 0; i < LPFC_MBX_WR_CONFIG_MAX_BDE; i++) {
12951                         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf),
12952                                          GFP_KERNEL);
12953                         if (!dmabuf) {
12954                                 rc = -ENOMEM;
12955                                 goto release_out;
12956                         }
12957                         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
12958                                                           SLI4_PAGE_SIZE,
12959                                                           &dmabuf->phys,
12960                                                           GFP_KERNEL);
12961                         if (!dmabuf->virt) {
12962                                 kfree(dmabuf);
12963                                 rc = -ENOMEM;
12964                                 goto release_out;
12965                         }
12966                         list_add_tail(&dmabuf->list, &dma_buffer_list);
12967                 }
12968                 while (offset < fw->size) {
12969                         temp_offset = offset;
12970                         list_for_each_entry(dmabuf, &dma_buffer_list, list) {
12971                                 if (temp_offset + SLI4_PAGE_SIZE > fw->size) {
12972                                         memcpy(dmabuf->virt,
12973                                                fw->data + temp_offset,
12974                                                fw->size - temp_offset);
12975                                         temp_offset = fw->size;
12976                                         break;
12977                                 }
12978                                 memcpy(dmabuf->virt, fw->data + temp_offset,
12979                                        SLI4_PAGE_SIZE);
12980                                 temp_offset += SLI4_PAGE_SIZE;
12981                         }
12982                         rc = lpfc_wr_object(phba, &dma_buffer_list,
12983                                     (fw->size - offset), &offset);
12984                         if (rc) {
12985                                 rc = lpfc_log_write_firmware_error(phba, offset,
12986                                                                    magic_number,
12987                                                                    ftype,
12988                                                                    fid,
12989                                                                    fsize,
12990                                                                    fw);
12991                                 goto release_out;
12992                         }
12993                 }
12994                 rc = offset;
12995         } else
12996                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12997                                 "3029 Skipped Firmware update, Current "
12998                                 "Version:%s New Version:%s\n",
12999                                 fwrev, image->revision);
13000
13001 release_out:
13002         list_for_each_entry_safe(dmabuf, next, &dma_buffer_list, list) {
13003                 list_del(&dmabuf->list);
13004                 dma_free_coherent(&phba->pcidev->dev, SLI4_PAGE_SIZE,
13005                                   dmabuf->virt, dmabuf->phys);
13006                 kfree(dmabuf);
13007         }
13008         release_firmware(fw);
13009 out:
13010         if (rc < 0)
13011                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13012                                 "3062 Firmware update error, status %d.\n", rc);
13013         else
13014                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13015                                 "3024 Firmware update success: size %d.\n", rc);
13016 }
13017
13018 /**
13019  * lpfc_sli4_request_firmware_update - Request linux generic firmware upgrade
13020  * @phba: pointer to lpfc hba data structure.
13021  * @fw_upgrade: which firmware to update.
13022  *
13023  * This routine is called to perform Linux generic firmware upgrade on device
13024  * that supports such feature.
13025  **/
13026 int
13027 lpfc_sli4_request_firmware_update(struct lpfc_hba *phba, uint8_t fw_upgrade)
13028 {
13029         char file_name[ELX_FW_NAME_SIZE] = {0};
13030         int ret;
13031         const struct firmware *fw;
13032
13033         /* Only supported on SLI4 interface type 2 for now */
13034         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
13035             LPFC_SLI_INTF_IF_TYPE_2)
13036                 return -EPERM;
13037
13038         scnprintf(file_name, sizeof(file_name), "/*(DEBLOBBED)*/", phba->ModelName);
13039
13040         if (fw_upgrade == INT_FW_UPGRADE) {
13041                 ret = reject_firmware_nowait(THIS_MODULE, FW_ACTION_HOTPLUG,
13042                                         file_name, &phba->pcidev->dev,
13043                                         GFP_KERNEL, (void *)phba,
13044                                         lpfc_write_firmware);
13045         } else if (fw_upgrade == RUN_FW_UPGRADE) {
13046                 ret = reject_firmware(&fw, file_name, &phba->pcidev->dev);
13047                 if (!ret)
13048                         lpfc_write_firmware(fw, (void *)phba);
13049         } else {
13050                 ret = -EINVAL;
13051         }
13052
13053         return ret;
13054 }
13055
13056 /**
13057  * lpfc_pci_probe_one_s4 - PCI probe func to reg SLI-4 device to PCI subsys
13058  * @pdev: pointer to PCI device
13059  * @pid: pointer to PCI device identifier
13060  *
13061  * This routine is called from the kernel's PCI subsystem to device with
13062  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
13063  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
13064  * information of the device and driver to see if the driver state that it
13065  * can support this kind of device. If the match is successful, the driver
13066  * core invokes this routine. If this routine determines it can claim the HBA,
13067  * it does all the initialization that it needs to do to handle the HBA
13068  * properly.
13069  *
13070  * Return code
13071  *      0 - driver can claim the device
13072  *      negative value - driver can not claim the device
13073  **/
13074 static int
13075 lpfc_pci_probe_one_s4(struct pci_dev *pdev, const struct pci_device_id *pid)
13076 {
13077         struct lpfc_hba   *phba;
13078         struct lpfc_vport *vport = NULL;
13079         struct Scsi_Host  *shost = NULL;
13080         int error;
13081         uint32_t cfg_mode, intr_mode;
13082
13083         /* Allocate memory for HBA structure */
13084         phba = lpfc_hba_alloc(pdev);
13085         if (!phba)
13086                 return -ENOMEM;
13087
13088         INIT_LIST_HEAD(&phba->poll_list);
13089
13090         /* Perform generic PCI device enabling operation */
13091         error = lpfc_enable_pci_dev(phba);
13092         if (error)
13093                 goto out_free_phba;
13094
13095         /* Set up SLI API function jump table for PCI-device group-1 HBAs */
13096         error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_OC);
13097         if (error)
13098                 goto out_disable_pci_dev;
13099
13100         /* Set up SLI-4 specific device PCI memory space */
13101         error = lpfc_sli4_pci_mem_setup(phba);
13102         if (error) {
13103                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13104                                 "1410 Failed to set up pci memory space.\n");
13105                 goto out_disable_pci_dev;
13106         }
13107
13108         /* Set up SLI-4 Specific device driver resources */
13109         error = lpfc_sli4_driver_resource_setup(phba);
13110         if (error) {
13111                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13112                                 "1412 Failed to set up driver resource.\n");
13113                 goto out_unset_pci_mem_s4;
13114         }
13115
13116         INIT_LIST_HEAD(&phba->active_rrq_list);
13117         INIT_LIST_HEAD(&phba->fcf.fcf_pri_list);
13118
13119         /* Set up common device driver resources */
13120         error = lpfc_setup_driver_resource_phase2(phba);
13121         if (error) {
13122                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13123                                 "1414 Failed to set up driver resource.\n");
13124                 goto out_unset_driver_resource_s4;
13125         }
13126
13127         /* Get the default values for Model Name and Description */
13128         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
13129
13130         /* Now, trying to enable interrupt and bring up the device */
13131         cfg_mode = phba->cfg_use_msi;
13132
13133         /* Put device to a known state before enabling interrupt */
13134         phba->pport = NULL;
13135         lpfc_stop_port(phba);
13136
13137         /* Init cpu_map array */
13138         lpfc_cpu_map_array_init(phba);
13139
13140         /* Init hba_eq_hdl array */
13141         lpfc_hba_eq_hdl_array_init(phba);
13142
13143         /* Configure and enable interrupt */
13144         intr_mode = lpfc_sli4_enable_intr(phba, cfg_mode);
13145         if (intr_mode == LPFC_INTR_ERROR) {
13146                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13147                                 "0426 Failed to enable interrupt.\n");
13148                 error = -ENODEV;
13149                 goto out_unset_driver_resource;
13150         }
13151         /* Default to single EQ for non-MSI-X */
13152         if (phba->intr_type != MSIX) {
13153                 phba->cfg_irq_chann = 1;
13154                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
13155                         if (phba->nvmet_support)
13156                                 phba->cfg_nvmet_mrq = 1;
13157                 }
13158         }
13159         lpfc_cpu_affinity_check(phba, phba->cfg_irq_chann);
13160
13161         /* Create SCSI host to the physical port */
13162         error = lpfc_create_shost(phba);
13163         if (error) {
13164                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13165                                 "1415 Failed to create scsi host.\n");
13166                 goto out_disable_intr;
13167         }
13168         vport = phba->pport;
13169         shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
13170
13171         /* Configure sysfs attributes */
13172         error = lpfc_alloc_sysfs_attr(vport);
13173         if (error) {
13174                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13175                                 "1416 Failed to allocate sysfs attr\n");
13176                 goto out_destroy_shost;
13177         }
13178
13179         /* Set up SLI-4 HBA */
13180         if (lpfc_sli4_hba_setup(phba)) {
13181                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13182                                 "1421 Failed to set up hba\n");
13183                 error = -ENODEV;
13184                 goto out_free_sysfs_attr;
13185         }
13186
13187         /* Log the current active interrupt mode */
13188         phba->intr_mode = intr_mode;
13189         lpfc_log_intr_mode(phba, intr_mode);
13190
13191         /* Perform post initialization setup */
13192         lpfc_post_init_setup(phba);
13193
13194         /* NVME support in FW earlier in the driver load corrects the
13195          * FC4 type making a check for nvme_support unnecessary.
13196          */
13197         if (phba->nvmet_support == 0) {
13198                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
13199                         /* Create NVME binding with nvme_fc_transport. This
13200                          * ensures the vport is initialized.  If the localport
13201                          * create fails, it should not unload the driver to
13202                          * support field issues.
13203                          */
13204                         error = lpfc_nvme_create_localport(vport);
13205                         if (error) {
13206                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13207                                                 "6004 NVME registration "
13208                                                 "failed, error x%x\n",
13209                                                 error);
13210                         }
13211                 }
13212         }
13213
13214         /* check for firmware upgrade or downgrade */
13215         if (phba->cfg_request_firmware_upgrade)
13216                 lpfc_sli4_request_firmware_update(phba, INT_FW_UPGRADE);
13217
13218         /* Check if there are static vports to be created. */
13219         lpfc_create_static_vport(phba);
13220
13221         /* Enable RAS FW log support */
13222         lpfc_sli4_ras_setup(phba);
13223
13224         timer_setup(&phba->cpuhp_poll_timer, lpfc_sli4_poll_hbtimer, 0);
13225         cpuhp_state_add_instance_nocalls(lpfc_cpuhp_state, &phba->cpuhp);
13226
13227         return 0;
13228
13229 out_free_sysfs_attr:
13230         lpfc_free_sysfs_attr(vport);
13231 out_destroy_shost:
13232         lpfc_destroy_shost(phba);
13233 out_disable_intr:
13234         lpfc_sli4_disable_intr(phba);
13235 out_unset_driver_resource:
13236         lpfc_unset_driver_resource_phase2(phba);
13237 out_unset_driver_resource_s4:
13238         lpfc_sli4_driver_resource_unset(phba);
13239 out_unset_pci_mem_s4:
13240         lpfc_sli4_pci_mem_unset(phba);
13241 out_disable_pci_dev:
13242         lpfc_disable_pci_dev(phba);
13243         if (shost)
13244                 scsi_host_put(shost);
13245 out_free_phba:
13246         lpfc_hba_free(phba);
13247         return error;
13248 }
13249
13250 /**
13251  * lpfc_pci_remove_one_s4 - PCI func to unreg SLI-4 device from PCI subsystem
13252  * @pdev: pointer to PCI device
13253  *
13254  * This routine is called from the kernel's PCI subsystem to device with
13255  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
13256  * removed from PCI bus, it performs all the necessary cleanup for the HBA
13257  * device to be removed from the PCI subsystem properly.
13258  **/
13259 static void
13260 lpfc_pci_remove_one_s4(struct pci_dev *pdev)
13261 {
13262         struct Scsi_Host *shost = pci_get_drvdata(pdev);
13263         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
13264         struct lpfc_vport **vports;
13265         struct lpfc_hba *phba = vport->phba;
13266         int i;
13267
13268         /* Mark the device unloading flag */
13269         spin_lock_irq(&phba->hbalock);
13270         vport->load_flag |= FC_UNLOADING;
13271         spin_unlock_irq(&phba->hbalock);
13272
13273         /* Free the HBA sysfs attributes */
13274         lpfc_free_sysfs_attr(vport);
13275
13276         /* Release all the vports against this physical port */
13277         vports = lpfc_create_vport_work_array(phba);
13278         if (vports != NULL)
13279                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
13280                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
13281                                 continue;
13282                         fc_vport_terminate(vports[i]->fc_vport);
13283                 }
13284         lpfc_destroy_vport_work_array(phba, vports);
13285
13286         /* Remove FC host and then SCSI host with the physical port */
13287         fc_remove_host(shost);
13288         scsi_remove_host(shost);
13289
13290         /* Perform ndlp cleanup on the physical port.  The nvme and nvmet
13291          * localports are destroyed after to cleanup all transport memory.
13292          */
13293         lpfc_cleanup(vport);
13294         lpfc_nvmet_destroy_targetport(phba);
13295         lpfc_nvme_destroy_localport(vport);
13296
13297         /* De-allocate multi-XRI pools */
13298         if (phba->cfg_xri_rebalancing)
13299                 lpfc_destroy_multixri_pools(phba);
13300
13301         /*
13302          * Bring down the SLI Layer. This step disables all interrupts,
13303          * clears the rings, discards all mailbox commands, and resets
13304          * the HBA FCoE function.
13305          */
13306         lpfc_debugfs_terminate(vport);
13307
13308         lpfc_stop_hba_timers(phba);
13309         spin_lock_irq(&phba->port_list_lock);
13310         list_del_init(&vport->listentry);
13311         spin_unlock_irq(&phba->port_list_lock);
13312
13313         /* Perform scsi free before driver resource_unset since scsi
13314          * buffers are released to their corresponding pools here.
13315          */
13316         lpfc_io_free(phba);
13317         lpfc_free_iocb_list(phba);
13318         lpfc_sli4_hba_unset(phba);
13319
13320         lpfc_unset_driver_resource_phase2(phba);
13321         lpfc_sli4_driver_resource_unset(phba);
13322
13323         /* Unmap adapter Control and Doorbell registers */
13324         lpfc_sli4_pci_mem_unset(phba);
13325
13326         /* Release PCI resources and disable device's PCI function */
13327         scsi_host_put(shost);
13328         lpfc_disable_pci_dev(phba);
13329
13330         /* Finally, free the driver's device data structure */
13331         lpfc_hba_free(phba);
13332
13333         return;
13334 }
13335
13336 /**
13337  * lpfc_pci_suspend_one_s4 - PCI func to suspend SLI-4 device for power mgmnt
13338  * @pdev: pointer to PCI device
13339  * @msg: power management message
13340  *
13341  * This routine is called from the kernel's PCI subsystem to support system
13342  * Power Management (PM) to device with SLI-4 interface spec. When PM invokes
13343  * this method, it quiesces the device by stopping the driver's worker
13344  * thread for the device, turning off device's interrupt and DMA, and bring
13345  * the device offline. Note that as the driver implements the minimum PM
13346  * requirements to a power-aware driver's PM support for suspend/resume -- all
13347  * the possible PM messages (SUSPEND, HIBERNATE, FREEZE) to the suspend()
13348  * method call will be treated as SUSPEND and the driver will fully
13349  * reinitialize its device during resume() method call, the driver will set
13350  * device to PCI_D3hot state in PCI config space instead of setting it
13351  * according to the @msg provided by the PM.
13352  *
13353  * Return code
13354  *      0 - driver suspended the device
13355  *      Error otherwise
13356  **/
13357 static int
13358 lpfc_pci_suspend_one_s4(struct pci_dev *pdev, pm_message_t msg)
13359 {
13360         struct Scsi_Host *shost = pci_get_drvdata(pdev);
13361         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13362
13363         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
13364                         "2843 PCI device Power Management suspend.\n");
13365
13366         /* Bring down the device */
13367         lpfc_offline_prep(phba, LPFC_MBX_WAIT);
13368         lpfc_offline(phba);
13369         kthread_stop(phba->worker_thread);
13370
13371         /* Disable interrupt from device */
13372         lpfc_sli4_disable_intr(phba);
13373         lpfc_sli4_queue_destroy(phba);
13374
13375         /* Save device state to PCI config space */
13376         pci_save_state(pdev);
13377         pci_set_power_state(pdev, PCI_D3hot);
13378
13379         return 0;
13380 }
13381
13382 /**
13383  * lpfc_pci_resume_one_s4 - PCI func to resume SLI-4 device for power mgmnt
13384  * @pdev: pointer to PCI device
13385  *
13386  * This routine is called from the kernel's PCI subsystem to support system
13387  * Power Management (PM) to device with SLI-4 interface spac. When PM invokes
13388  * this method, it restores the device's PCI config space state and fully
13389  * reinitializes the device and brings it online. Note that as the driver
13390  * implements the minimum PM requirements to a power-aware driver's PM for
13391  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
13392  * to the suspend() method call will be treated as SUSPEND and the driver
13393  * will fully reinitialize its device during resume() method call, the device
13394  * will be set to PCI_D0 directly in PCI config space before restoring the
13395  * state.
13396  *
13397  * Return code
13398  *      0 - driver suspended the device
13399  *      Error otherwise
13400  **/
13401 static int
13402 lpfc_pci_resume_one_s4(struct pci_dev *pdev)
13403 {
13404         struct Scsi_Host *shost = pci_get_drvdata(pdev);
13405         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13406         uint32_t intr_mode;
13407         int error;
13408
13409         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
13410                         "0292 PCI device Power Management resume.\n");
13411
13412         /* Restore device state from PCI config space */
13413         pci_set_power_state(pdev, PCI_D0);
13414         pci_restore_state(pdev);
13415
13416         /*
13417          * As the new kernel behavior of pci_restore_state() API call clears
13418          * device saved_state flag, need to save the restored state again.
13419          */
13420         pci_save_state(pdev);
13421
13422         if (pdev->is_busmaster)
13423                 pci_set_master(pdev);
13424
13425          /* Startup the kernel thread for this host adapter. */
13426         phba->worker_thread = kthread_run(lpfc_do_work, phba,
13427                                         "lpfc_worker_%d", phba->brd_no);
13428         if (IS_ERR(phba->worker_thread)) {
13429                 error = PTR_ERR(phba->worker_thread);
13430                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13431                                 "0293 PM resume failed to start worker "
13432                                 "thread: error=x%x.\n", error);
13433                 return error;
13434         }
13435
13436         /* Configure and enable interrupt */
13437         intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
13438         if (intr_mode == LPFC_INTR_ERROR) {
13439                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13440                                 "0294 PM resume Failed to enable interrupt\n");
13441                 return -EIO;
13442         } else
13443                 phba->intr_mode = intr_mode;
13444
13445         /* Restart HBA and bring it online */
13446         lpfc_sli_brdrestart(phba);
13447         lpfc_online(phba);
13448
13449         /* Log the current active interrupt mode */
13450         lpfc_log_intr_mode(phba, phba->intr_mode);
13451
13452         return 0;
13453 }
13454
13455 /**
13456  * lpfc_sli4_prep_dev_for_recover - Prepare SLI4 device for pci slot recover
13457  * @phba: pointer to lpfc hba data structure.
13458  *
13459  * This routine is called to prepare the SLI4 device for PCI slot recover. It
13460  * aborts all the outstanding SCSI I/Os to the pci device.
13461  **/
13462 static void
13463 lpfc_sli4_prep_dev_for_recover(struct lpfc_hba *phba)
13464 {
13465         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13466                         "2828 PCI channel I/O abort preparing for recovery\n");
13467         /*
13468          * There may be errored I/Os through HBA, abort all I/Os on txcmplq
13469          * and let the SCSI mid-layer to retry them to recover.
13470          */
13471         lpfc_sli_abort_fcp_rings(phba);
13472 }
13473
13474 /**
13475  * lpfc_sli4_prep_dev_for_reset - Prepare SLI4 device for pci slot reset
13476  * @phba: pointer to lpfc hba data structure.
13477  *
13478  * This routine is called to prepare the SLI4 device for PCI slot reset. It
13479  * disables the device interrupt and pci device, and aborts the internal FCP
13480  * pending I/Os.
13481  **/
13482 static void
13483 lpfc_sli4_prep_dev_for_reset(struct lpfc_hba *phba)
13484 {
13485         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13486                         "2826 PCI channel disable preparing for reset\n");
13487
13488         /* Block any management I/Os to the device */
13489         lpfc_block_mgmt_io(phba, LPFC_MBX_NO_WAIT);
13490
13491         /* Block all SCSI devices' I/Os on the host */
13492         lpfc_scsi_dev_block(phba);
13493
13494         /* Flush all driver's outstanding I/Os as we are to reset */
13495         lpfc_sli_flush_io_rings(phba);
13496
13497         /* stop all timers */
13498         lpfc_stop_hba_timers(phba);
13499
13500         /* Disable interrupt and pci device */
13501         lpfc_sli4_disable_intr(phba);
13502         lpfc_sli4_queue_destroy(phba);
13503         pci_disable_device(phba->pcidev);
13504 }
13505
13506 /**
13507  * lpfc_sli4_prep_dev_for_perm_failure - Prepare SLI4 dev for pci slot disable
13508  * @phba: pointer to lpfc hba data structure.
13509  *
13510  * This routine is called to prepare the SLI4 device for PCI slot permanently
13511  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
13512  * pending I/Os.
13513  **/
13514 static void
13515 lpfc_sli4_prep_dev_for_perm_failure(struct lpfc_hba *phba)
13516 {
13517         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13518                         "2827 PCI channel permanent disable for failure\n");
13519
13520         /* Block all SCSI devices' I/Os on the host */
13521         lpfc_scsi_dev_block(phba);
13522
13523         /* stop all timers */
13524         lpfc_stop_hba_timers(phba);
13525
13526         /* Clean up all driver's outstanding I/Os */
13527         lpfc_sli_flush_io_rings(phba);
13528 }
13529
13530 /**
13531  * lpfc_io_error_detected_s4 - Method for handling PCI I/O error to SLI-4 device
13532  * @pdev: pointer to PCI device.
13533  * @state: the current PCI connection state.
13534  *
13535  * This routine is called from the PCI subsystem for error handling to device
13536  * with SLI-4 interface spec. This function is called by the PCI subsystem
13537  * after a PCI bus error affecting this device has been detected. When this
13538  * function is invoked, it will need to stop all the I/Os and interrupt(s)
13539  * to the device. Once that is done, it will return PCI_ERS_RESULT_NEED_RESET
13540  * for the PCI subsystem to perform proper recovery as desired.
13541  *
13542  * Return codes
13543  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
13544  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
13545  **/
13546 static pci_ers_result_t
13547 lpfc_io_error_detected_s4(struct pci_dev *pdev, pci_channel_state_t state)
13548 {
13549         struct Scsi_Host *shost = pci_get_drvdata(pdev);
13550         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13551
13552         switch (state) {
13553         case pci_channel_io_normal:
13554                 /* Non-fatal error, prepare for recovery */
13555                 lpfc_sli4_prep_dev_for_recover(phba);
13556                 return PCI_ERS_RESULT_CAN_RECOVER;
13557         case pci_channel_io_frozen:
13558                 /* Fatal error, prepare for slot reset */
13559                 lpfc_sli4_prep_dev_for_reset(phba);
13560                 return PCI_ERS_RESULT_NEED_RESET;
13561         case pci_channel_io_perm_failure:
13562                 /* Permanent failure, prepare for device down */
13563                 lpfc_sli4_prep_dev_for_perm_failure(phba);
13564                 return PCI_ERS_RESULT_DISCONNECT;
13565         default:
13566                 /* Unknown state, prepare and request slot reset */
13567                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13568                                 "2825 Unknown PCI error state: x%x\n", state);
13569                 lpfc_sli4_prep_dev_for_reset(phba);
13570                 return PCI_ERS_RESULT_NEED_RESET;
13571         }
13572 }
13573
13574 /**
13575  * lpfc_io_slot_reset_s4 - Method for restart PCI SLI-4 device from scratch
13576  * @pdev: pointer to PCI device.
13577  *
13578  * This routine is called from the PCI subsystem for error handling to device
13579  * with SLI-4 interface spec. It is called after PCI bus has been reset to
13580  * restart the PCI card from scratch, as if from a cold-boot. During the
13581  * PCI subsystem error recovery, after the driver returns
13582  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
13583  * recovery and then call this routine before calling the .resume method to
13584  * recover the device. This function will initialize the HBA device, enable
13585  * the interrupt, but it will just put the HBA to offline state without
13586  * passing any I/O traffic.
13587  *
13588  * Return codes
13589  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
13590  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
13591  */
13592 static pci_ers_result_t
13593 lpfc_io_slot_reset_s4(struct pci_dev *pdev)
13594 {
13595         struct Scsi_Host *shost = pci_get_drvdata(pdev);
13596         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13597         struct lpfc_sli *psli = &phba->sli;
13598         uint32_t intr_mode;
13599
13600         dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
13601         if (pci_enable_device_mem(pdev)) {
13602                 printk(KERN_ERR "lpfc: Cannot re-enable "
13603                         "PCI device after reset.\n");
13604                 return PCI_ERS_RESULT_DISCONNECT;
13605         }
13606
13607         pci_restore_state(pdev);
13608
13609         /*
13610          * As the new kernel behavior of pci_restore_state() API call clears
13611          * device saved_state flag, need to save the restored state again.
13612          */
13613         pci_save_state(pdev);
13614
13615         if (pdev->is_busmaster)
13616                 pci_set_master(pdev);
13617
13618         spin_lock_irq(&phba->hbalock);
13619         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
13620         spin_unlock_irq(&phba->hbalock);
13621
13622         /* Init cpu_map array */
13623         lpfc_cpu_map_array_init(phba);
13624         /* Configure and enable interrupt */
13625         intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
13626         if (intr_mode == LPFC_INTR_ERROR) {
13627                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13628                                 "2824 Cannot re-enable interrupt after "
13629                                 "slot reset.\n");
13630                 return PCI_ERS_RESULT_DISCONNECT;
13631         } else
13632                 phba->intr_mode = intr_mode;
13633
13634         /* Log the current active interrupt mode */
13635         lpfc_log_intr_mode(phba, phba->intr_mode);
13636
13637         return PCI_ERS_RESULT_RECOVERED;
13638 }
13639
13640 /**
13641  * lpfc_io_resume_s4 - Method for resuming PCI I/O operation to SLI-4 device
13642  * @pdev: pointer to PCI device
13643  *
13644  * This routine is called from the PCI subsystem for error handling to device
13645  * with SLI-4 interface spec. It is called when kernel error recovery tells
13646  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
13647  * error recovery. After this call, traffic can start to flow from this device
13648  * again.
13649  **/
13650 static void
13651 lpfc_io_resume_s4(struct pci_dev *pdev)
13652 {
13653         struct Scsi_Host *shost = pci_get_drvdata(pdev);
13654         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13655
13656         /*
13657          * In case of slot reset, as function reset is performed through
13658          * mailbox command which needs DMA to be enabled, this operation
13659          * has to be moved to the io resume phase. Taking device offline
13660          * will perform the necessary cleanup.
13661          */
13662         if (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE)) {
13663                 /* Perform device reset */
13664                 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
13665                 lpfc_offline(phba);
13666                 lpfc_sli_brdrestart(phba);
13667                 /* Bring the device back online */
13668                 lpfc_online(phba);
13669         }
13670 }
13671
13672 /**
13673  * lpfc_pci_probe_one - lpfc PCI probe func to reg dev to PCI subsystem
13674  * @pdev: pointer to PCI device
13675  * @pid: pointer to PCI device identifier
13676  *
13677  * This routine is to be registered to the kernel's PCI subsystem. When an
13678  * Emulex HBA device is presented on PCI bus, the kernel PCI subsystem looks
13679  * at PCI device-specific information of the device and driver to see if the
13680  * driver state that it can support this kind of device. If the match is
13681  * successful, the driver core invokes this routine. This routine dispatches
13682  * the action to the proper SLI-3 or SLI-4 device probing routine, which will
13683  * do all the initialization that it needs to do to handle the HBA device
13684  * properly.
13685  *
13686  * Return code
13687  *      0 - driver can claim the device
13688  *      negative value - driver can not claim the device
13689  **/
13690 static int
13691 lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
13692 {
13693         int rc;
13694         struct lpfc_sli_intf intf;
13695
13696         if (pci_read_config_dword(pdev, LPFC_SLI_INTF, &intf.word0))
13697                 return -ENODEV;
13698
13699         if ((bf_get(lpfc_sli_intf_valid, &intf) == LPFC_SLI_INTF_VALID) &&
13700             (bf_get(lpfc_sli_intf_slirev, &intf) == LPFC_SLI_INTF_REV_SLI4))
13701                 rc = lpfc_pci_probe_one_s4(pdev, pid);
13702         else
13703                 rc = lpfc_pci_probe_one_s3(pdev, pid);
13704
13705         return rc;
13706 }
13707
13708 /**
13709  * lpfc_pci_remove_one - lpfc PCI func to unreg dev from PCI subsystem
13710  * @pdev: pointer to PCI device
13711  *
13712  * This routine is to be registered to the kernel's PCI subsystem. When an
13713  * Emulex HBA is removed from PCI bus, the driver core invokes this routine.
13714  * This routine dispatches the action to the proper SLI-3 or SLI-4 device
13715  * remove routine, which will perform all the necessary cleanup for the
13716  * device to be removed from the PCI subsystem properly.
13717  **/
13718 static void
13719 lpfc_pci_remove_one(struct pci_dev *pdev)
13720 {
13721         struct Scsi_Host *shost = pci_get_drvdata(pdev);
13722         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13723
13724         switch (phba->pci_dev_grp) {
13725         case LPFC_PCI_DEV_LP:
13726                 lpfc_pci_remove_one_s3(pdev);
13727                 break;
13728         case LPFC_PCI_DEV_OC:
13729                 lpfc_pci_remove_one_s4(pdev);
13730                 break;
13731         default:
13732                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13733                                 "1424 Invalid PCI device group: 0x%x\n",
13734                                 phba->pci_dev_grp);
13735                 break;
13736         }
13737         return;
13738 }
13739
13740 /**
13741  * lpfc_pci_suspend_one - lpfc PCI func to suspend dev for power management
13742  * @pdev: pointer to PCI device
13743  * @msg: power management message
13744  *
13745  * This routine is to be registered to the kernel's PCI subsystem to support
13746  * system Power Management (PM). When PM invokes this method, it dispatches
13747  * the action to the proper SLI-3 or SLI-4 device suspend routine, which will
13748  * suspend the device.
13749  *
13750  * Return code
13751  *      0 - driver suspended the device
13752  *      Error otherwise
13753  **/
13754 static int
13755 lpfc_pci_suspend_one(struct pci_dev *pdev, pm_message_t msg)
13756 {
13757         struct Scsi_Host *shost = pci_get_drvdata(pdev);
13758         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13759         int rc = -ENODEV;
13760
13761         switch (phba->pci_dev_grp) {
13762         case LPFC_PCI_DEV_LP:
13763                 rc = lpfc_pci_suspend_one_s3(pdev, msg);
13764                 break;
13765         case LPFC_PCI_DEV_OC:
13766                 rc = lpfc_pci_suspend_one_s4(pdev, msg);
13767                 break;
13768         default:
13769                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13770                                 "1425 Invalid PCI device group: 0x%x\n",
13771                                 phba->pci_dev_grp);
13772                 break;
13773         }
13774         return rc;
13775 }
13776
13777 /**
13778  * lpfc_pci_resume_one - lpfc PCI func to resume dev for power management
13779  * @pdev: pointer to PCI device
13780  *
13781  * This routine is to be registered to the kernel's PCI subsystem to support
13782  * system Power Management (PM). When PM invokes this method, it dispatches
13783  * the action to the proper SLI-3 or SLI-4 device resume routine, which will
13784  * resume the device.
13785  *
13786  * Return code
13787  *      0 - driver suspended the device
13788  *      Error otherwise
13789  **/
13790 static int
13791 lpfc_pci_resume_one(struct pci_dev *pdev)
13792 {
13793         struct Scsi_Host *shost = pci_get_drvdata(pdev);
13794         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13795         int rc = -ENODEV;
13796
13797         switch (phba->pci_dev_grp) {
13798         case LPFC_PCI_DEV_LP:
13799                 rc = lpfc_pci_resume_one_s3(pdev);
13800                 break;
13801         case LPFC_PCI_DEV_OC:
13802                 rc = lpfc_pci_resume_one_s4(pdev);
13803                 break;
13804         default:
13805                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13806                                 "1426 Invalid PCI device group: 0x%x\n",
13807                                 phba->pci_dev_grp);
13808                 break;
13809         }
13810         return rc;
13811 }
13812
13813 /**
13814  * lpfc_io_error_detected - lpfc method for handling PCI I/O error
13815  * @pdev: pointer to PCI device.
13816  * @state: the current PCI connection state.
13817  *
13818  * This routine is registered to the PCI subsystem for error handling. This
13819  * function is called by the PCI subsystem after a PCI bus error affecting
13820  * this device has been detected. When this routine is invoked, it dispatches
13821  * the action to the proper SLI-3 or SLI-4 device error detected handling
13822  * routine, which will perform the proper error detected operation.
13823  *
13824  * Return codes
13825  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
13826  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
13827  **/
13828 static pci_ers_result_t
13829 lpfc_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
13830 {
13831         struct Scsi_Host *shost = pci_get_drvdata(pdev);
13832         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13833         pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
13834
13835         switch (phba->pci_dev_grp) {
13836         case LPFC_PCI_DEV_LP:
13837                 rc = lpfc_io_error_detected_s3(pdev, state);
13838                 break;
13839         case LPFC_PCI_DEV_OC:
13840                 rc = lpfc_io_error_detected_s4(pdev, state);
13841                 break;
13842         default:
13843                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13844                                 "1427 Invalid PCI device group: 0x%x\n",
13845                                 phba->pci_dev_grp);
13846                 break;
13847         }
13848         return rc;
13849 }
13850
13851 /**
13852  * lpfc_io_slot_reset - lpfc method for restart PCI dev from scratch
13853  * @pdev: pointer to PCI device.
13854  *
13855  * This routine is registered to the PCI subsystem for error handling. This
13856  * function is called after PCI bus has been reset to restart the PCI card
13857  * from scratch, as if from a cold-boot. When this routine is invoked, it
13858  * dispatches the action to the proper SLI-3 or SLI-4 device reset handling
13859  * routine, which will perform the proper device reset.
13860  *
13861  * Return codes
13862  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
13863  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
13864  **/
13865 static pci_ers_result_t
13866 lpfc_io_slot_reset(struct pci_dev *pdev)
13867 {
13868         struct Scsi_Host *shost = pci_get_drvdata(pdev);
13869         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13870         pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
13871
13872         switch (phba->pci_dev_grp) {
13873         case LPFC_PCI_DEV_LP:
13874                 rc = lpfc_io_slot_reset_s3(pdev);
13875                 break;
13876         case LPFC_PCI_DEV_OC:
13877                 rc = lpfc_io_slot_reset_s4(pdev);
13878                 break;
13879         default:
13880                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13881                                 "1428 Invalid PCI device group: 0x%x\n",
13882                                 phba->pci_dev_grp);
13883                 break;
13884         }
13885         return rc;
13886 }
13887
13888 /**
13889  * lpfc_io_resume - lpfc method for resuming PCI I/O operation
13890  * @pdev: pointer to PCI device
13891  *
13892  * This routine is registered to the PCI subsystem for error handling. It
13893  * is called when kernel error recovery tells the lpfc driver that it is
13894  * OK to resume normal PCI operation after PCI bus error recovery. When
13895  * this routine is invoked, it dispatches the action to the proper SLI-3
13896  * or SLI-4 device io_resume routine, which will resume the device operation.
13897  **/
13898 static void
13899 lpfc_io_resume(struct pci_dev *pdev)
13900 {
13901         struct Scsi_Host *shost = pci_get_drvdata(pdev);
13902         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13903
13904         switch (phba->pci_dev_grp) {
13905         case LPFC_PCI_DEV_LP:
13906                 lpfc_io_resume_s3(pdev);
13907                 break;
13908         case LPFC_PCI_DEV_OC:
13909                 lpfc_io_resume_s4(pdev);
13910                 break;
13911         default:
13912                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13913                                 "1429 Invalid PCI device group: 0x%x\n",
13914                                 phba->pci_dev_grp);
13915                 break;
13916         }
13917         return;
13918 }
13919
13920 /**
13921  * lpfc_sli4_oas_verify - Verify OAS is supported by this adapter
13922  * @phba: pointer to lpfc hba data structure.
13923  *
13924  * This routine checks to see if OAS is supported for this adapter. If
13925  * supported, the configure Flash Optimized Fabric flag is set.  Otherwise,
13926  * the enable oas flag is cleared and the pool created for OAS device data
13927  * is destroyed.
13928  *
13929  **/
13930 static void
13931 lpfc_sli4_oas_verify(struct lpfc_hba *phba)
13932 {
13933
13934         if (!phba->cfg_EnableXLane)
13935                 return;
13936
13937         if (phba->sli4_hba.pc_sli4_params.oas_supported) {
13938                 phba->cfg_fof = 1;
13939         } else {
13940                 phba->cfg_fof = 0;
13941                 mempool_destroy(phba->device_data_mem_pool);
13942                 phba->device_data_mem_pool = NULL;
13943         }
13944
13945         return;
13946 }
13947
13948 /**
13949  * lpfc_sli4_ras_init - Verify RAS-FW log is supported by this adapter
13950  * @phba: pointer to lpfc hba data structure.
13951  *
13952  * This routine checks to see if RAS is supported by the adapter. Check the
13953  * function through which RAS support enablement is to be done.
13954  **/
13955 void
13956 lpfc_sli4_ras_init(struct lpfc_hba *phba)
13957 {
13958         switch (phba->pcidev->device) {
13959         case PCI_DEVICE_ID_LANCER_G6_FC:
13960         case PCI_DEVICE_ID_LANCER_G7_FC:
13961                 phba->ras_fwlog.ras_hwsupport = true;
13962                 if (phba->cfg_ras_fwlog_func == PCI_FUNC(phba->pcidev->devfn) &&
13963                     phba->cfg_ras_fwlog_buffsize)
13964                         phba->ras_fwlog.ras_enabled = true;
13965                 else
13966                         phba->ras_fwlog.ras_enabled = false;
13967                 break;
13968         default:
13969                 phba->ras_fwlog.ras_hwsupport = false;
13970         }
13971 }
13972
13973
13974 MODULE_DEVICE_TABLE(pci, lpfc_id_table);
13975
13976 static const struct pci_error_handlers lpfc_err_handler = {
13977         .error_detected = lpfc_io_error_detected,
13978         .slot_reset = lpfc_io_slot_reset,
13979         .resume = lpfc_io_resume,
13980 };
13981
13982 static struct pci_driver lpfc_driver = {
13983         .name           = LPFC_DRIVER_NAME,
13984         .id_table       = lpfc_id_table,
13985         .probe          = lpfc_pci_probe_one,
13986         .remove         = lpfc_pci_remove_one,
13987         .shutdown       = lpfc_pci_remove_one,
13988         .suspend        = lpfc_pci_suspend_one,
13989         .resume         = lpfc_pci_resume_one,
13990         .err_handler    = &lpfc_err_handler,
13991 };
13992
13993 static const struct file_operations lpfc_mgmt_fop = {
13994         .owner = THIS_MODULE,
13995 };
13996
13997 static struct miscdevice lpfc_mgmt_dev = {
13998         .minor = MISC_DYNAMIC_MINOR,
13999         .name = "lpfcmgmt",
14000         .fops = &lpfc_mgmt_fop,
14001 };
14002
14003 /**
14004  * lpfc_init - lpfc module initialization routine
14005  *
14006  * This routine is to be invoked when the lpfc module is loaded into the
14007  * kernel. The special kernel macro module_init() is used to indicate the
14008  * role of this routine to the kernel as lpfc module entry point.
14009  *
14010  * Return codes
14011  *   0 - successful
14012  *   -ENOMEM - FC attach transport failed
14013  *   all others - failed
14014  */
14015 static int __init
14016 lpfc_init(void)
14017 {
14018         int error = 0;
14019
14020         pr_info(LPFC_MODULE_DESC "\n");
14021         pr_info(LPFC_COPYRIGHT "\n");
14022
14023         error = misc_register(&lpfc_mgmt_dev);
14024         if (error)
14025                 printk(KERN_ERR "Could not register lpfcmgmt device, "
14026                         "misc_register returned with status %d", error);
14027
14028         error = -ENOMEM;
14029         lpfc_transport_functions.vport_create = lpfc_vport_create;
14030         lpfc_transport_functions.vport_delete = lpfc_vport_delete;
14031         lpfc_transport_template =
14032                                 fc_attach_transport(&lpfc_transport_functions);
14033         if (lpfc_transport_template == NULL)
14034                 goto unregister;
14035         lpfc_vport_transport_template =
14036                 fc_attach_transport(&lpfc_vport_transport_functions);
14037         if (lpfc_vport_transport_template == NULL) {
14038                 fc_release_transport(lpfc_transport_template);
14039                 goto unregister;
14040         }
14041         lpfc_nvme_cmd_template();
14042         lpfc_nvmet_cmd_template();
14043
14044         /* Initialize in case vector mapping is needed */
14045         lpfc_present_cpu = num_present_cpus();
14046
14047         error = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN,
14048                                         "lpfc/sli4:online",
14049                                         lpfc_cpu_online, lpfc_cpu_offline);
14050         if (error < 0)
14051                 goto cpuhp_failure;
14052         lpfc_cpuhp_state = error;
14053
14054         error = pci_register_driver(&lpfc_driver);
14055         if (error)
14056                 goto unwind;
14057
14058         return error;
14059
14060 unwind:
14061         cpuhp_remove_multi_state(lpfc_cpuhp_state);
14062 cpuhp_failure:
14063         fc_release_transport(lpfc_transport_template);
14064         fc_release_transport(lpfc_vport_transport_template);
14065 unregister:
14066         misc_deregister(&lpfc_mgmt_dev);
14067
14068         return error;
14069 }
14070
14071 void lpfc_dmp_dbg(struct lpfc_hba *phba)
14072 {
14073         unsigned int start_idx;
14074         unsigned int dbg_cnt;
14075         unsigned int temp_idx;
14076         int i;
14077         int j = 0;
14078         unsigned long rem_nsec;
14079
14080         if (phba->cfg_log_verbose)
14081                 return;
14082
14083         if (atomic_cmpxchg(&phba->dbg_log_dmping, 0, 1) != 0)
14084                 return;
14085
14086         start_idx = (unsigned int)atomic_read(&phba->dbg_log_idx) % DBG_LOG_SZ;
14087         dbg_cnt = (unsigned int)atomic_read(&phba->dbg_log_cnt);
14088         temp_idx = start_idx;
14089         if (dbg_cnt >= DBG_LOG_SZ) {
14090                 dbg_cnt = DBG_LOG_SZ;
14091                 temp_idx -= 1;
14092         } else {
14093                 if ((start_idx + dbg_cnt) > (DBG_LOG_SZ - 1)) {
14094                         temp_idx = (start_idx + dbg_cnt) % DBG_LOG_SZ;
14095                 } else {
14096                         if (start_idx < dbg_cnt)
14097                                 start_idx = DBG_LOG_SZ - (dbg_cnt - start_idx);
14098                         else
14099                                 start_idx -= dbg_cnt;
14100                 }
14101         }
14102         dev_info(&phba->pcidev->dev, "start %d end %d cnt %d\n",
14103                  start_idx, temp_idx, dbg_cnt);
14104
14105         for (i = 0; i < dbg_cnt; i++) {
14106                 if ((start_idx + i) < DBG_LOG_SZ)
14107                         temp_idx = (start_idx + i) % DBG_LOG_SZ;
14108                 else
14109                         temp_idx = j++;
14110                 rem_nsec = do_div(phba->dbg_log[temp_idx].t_ns, NSEC_PER_SEC);
14111                 dev_info(&phba->pcidev->dev, "%d: [%5lu.%06lu] %s",
14112                          temp_idx,
14113                          (unsigned long)phba->dbg_log[temp_idx].t_ns,
14114                          rem_nsec / 1000,
14115                          phba->dbg_log[temp_idx].log);
14116         }
14117         atomic_set(&phba->dbg_log_cnt, 0);
14118         atomic_set(&phba->dbg_log_dmping, 0);
14119 }
14120
14121 __printf(2, 3)
14122 void lpfc_dbg_print(struct lpfc_hba *phba, const char *fmt, ...)
14123 {
14124         unsigned int idx;
14125         va_list args;
14126         int dbg_dmping = atomic_read(&phba->dbg_log_dmping);
14127         struct va_format vaf;
14128
14129
14130         va_start(args, fmt);
14131         if (unlikely(dbg_dmping)) {
14132                 vaf.fmt = fmt;
14133                 vaf.va = &args;
14134                 dev_info(&phba->pcidev->dev, "%pV", &vaf);
14135                 va_end(args);
14136                 return;
14137         }
14138         idx = (unsigned int)atomic_fetch_add(1, &phba->dbg_log_idx) %
14139                 DBG_LOG_SZ;
14140
14141         atomic_inc(&phba->dbg_log_cnt);
14142
14143         vscnprintf(phba->dbg_log[idx].log,
14144                    sizeof(phba->dbg_log[idx].log), fmt, args);
14145         va_end(args);
14146
14147         phba->dbg_log[idx].t_ns = local_clock();
14148 }
14149
14150 /**
14151  * lpfc_exit - lpfc module removal routine
14152  *
14153  * This routine is invoked when the lpfc module is removed from the kernel.
14154  * The special kernel macro module_exit() is used to indicate the role of
14155  * this routine to the kernel as lpfc module exit point.
14156  */
14157 static void __exit
14158 lpfc_exit(void)
14159 {
14160         misc_deregister(&lpfc_mgmt_dev);
14161         pci_unregister_driver(&lpfc_driver);
14162         cpuhp_remove_multi_state(lpfc_cpuhp_state);
14163         fc_release_transport(lpfc_transport_template);
14164         fc_release_transport(lpfc_vport_transport_template);
14165         idr_destroy(&lpfc_hba_index);
14166 }
14167
14168 module_init(lpfc_init);
14169 module_exit(lpfc_exit);
14170 MODULE_LICENSE("GPL");
14171 MODULE_DESCRIPTION(LPFC_MODULE_DESC);
14172 MODULE_AUTHOR("Broadcom");
14173 MODULE_VERSION("0:" LPFC_DRIVER_VERSION);