drivers/scsi/qedi/qedi_main.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * QLogic iSCSI Offload Driver
   4  * Copyright (c) 2016 Cavium Inc.
   5  */
   6
   7 #include <linux/module.h>
   8 #include <linux/pci.h>
   9 #include <linux/kernel.h>
  10 #include <linux/if_arp.h>
  11 #include <scsi/iscsi_if.h>
  12 #include <linux/inet.h>
  13 #include <net/arp.h>
  14 #include <linux/list.h>
  15 #include <linux/kthread.h>
  16 #include <linux/mm.h>
  17 #include <linux/if_vlan.h>
  18 #include <linux/cpu.h>
  19 #include <linux/iscsi_boot_sysfs.h>
  20
  21 #include <scsi/scsi_cmnd.h>
  22 #include <scsi/scsi_device.h>
  23 #include <scsi/scsi_eh.h>
  24 #include <scsi/scsi_host.h>
  25 #include <scsi/scsi.h>
  26
  27 #include "qedi.h"
  28 #include "qedi_gbl.h"
  29 #include "qedi_iscsi.h"
  30
  31 static uint qedi_qed_debug;
  32 module_param(qedi_qed_debug, uint, 0644);
  33 MODULE_PARM_DESC(qedi_qed_debug, " QED debug level 0 (default)");
  34
  35 static uint qedi_fw_debug;
  36 module_param(qedi_fw_debug, uint, 0644);
  37 MODULE_PARM_DESC(qedi_fw_debug, " Firmware debug level 0(default) to 3");
  38
  39 uint qedi_dbg_log = QEDI_LOG_WARN | QEDI_LOG_SCSI_TM;
  40 module_param(qedi_dbg_log, uint, 0644);
  41 MODULE_PARM_DESC(qedi_dbg_log, " Default debug level");
  42
  43 uint qedi_io_tracing;
  44 module_param(qedi_io_tracing, uint, 0644);
  45 MODULE_PARM_DESC(qedi_io_tracing,
  46                  " Enable logging of SCSI requests/completions into trace buffer. (default off).");
  47
  48 static uint qedi_ll2_buf_size = 0x400;
  49 module_param(qedi_ll2_buf_size, uint, 0644);
  50 MODULE_PARM_DESC(qedi_ll2_buf_size,
  51                  "parameter to set ping packet size, default - 0x400, Jumbo packets - 0x2400.");
  52
  53 static uint qedi_flags_override;
  54 module_param(qedi_flags_override, uint, 0644);
  55 MODULE_PARM_DESC(qedi_flags_override, "Disable/Enable MFW error flags bits action.");
  56
  57 const struct qed_iscsi_ops *qedi_ops;
  58 static struct scsi_transport_template *qedi_scsi_transport;
  59 static struct pci_driver qedi_pci_driver;
  60 static DEFINE_PER_CPU(struct qedi_percpu_s, qedi_percpu);
  61 static LIST_HEAD(qedi_udev_list);
  62 /* Static function declaration */
  63 static int qedi_alloc_global_queues(struct qedi_ctx *qedi);
  64 static void qedi_free_global_queues(struct qedi_ctx *qedi);
  65 static struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid);
  66 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev);
  67 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi);
  68 static struct nvm_iscsi_block *qedi_get_nvram_block(struct qedi_ctx *qedi);
  69 static void qedi_recovery_handler(struct work_struct *work);
  70 static void qedi_schedule_hw_err_handler(void *dev,
  71                                          enum qed_hw_err_type err_type);
  72 static int qedi_suspend(struct pci_dev *pdev, pm_message_t state);
  73
  74 static int qedi_iscsi_event_cb(void *context, u8 fw_event_code, void *fw_handle)
  75 {
  76         struct qedi_ctx *qedi;
  77         struct qedi_endpoint *qedi_ep;
  78         struct iscsi_eqe_data *data;
  79         int rval = 0;
  80
  81         if (!context || !fw_handle) {
  82                 QEDI_ERR(NULL, "Recv event with ctx NULL\n");
  83                 return -EINVAL;
  84         }
  85
  86         qedi = (struct qedi_ctx *)context;
  87         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
  88                   "Recv Event %d fw_handle %p\n", fw_event_code, fw_handle);
  89
  90         data = (struct iscsi_eqe_data *)fw_handle;
  91         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
  92                   "icid=0x%x conn_id=0x%x err-code=0x%x error-pdu-opcode-reserved=0x%x\n",
  93                    data->icid, data->conn_id, data->error_code,
  94                    data->error_pdu_opcode_reserved);
  95
  96         qedi_ep = qedi->ep_tbl[data->icid];
  97
  98         if (!qedi_ep) {
  99                 QEDI_WARN(&qedi->dbg_ctx,
 100                           "Cannot process event, ep already disconnected, cid=0x%x\n",
 101                            data->icid);
 102                 WARN_ON(1);
 103                 return -ENODEV;
 104         }
 105
 106         switch (fw_event_code) {
 107         case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE:
 108                 if (qedi_ep->state == EP_STATE_OFLDCONN_START)
 109                         qedi_ep->state = EP_STATE_OFLDCONN_COMPL;
 110
 111                 wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
 112                 break;
 113         case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE:
 114                 qedi_ep->state = EP_STATE_DISCONN_COMPL;
 115                 wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
 116                 break;
 117         case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR:
 118                 qedi_process_iscsi_error(qedi_ep, data);
 119                 break;
 120         case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD:
 121         case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD:
 122         case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME:
 123         case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT:
 124         case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT:
 125         case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2:
 126         case ISCSI_EVENT_TYPE_TCP_CONN_ERROR:
 127                 qedi_process_tcp_error(qedi_ep, data);
 128                 break;
 129         default:
 130                 QEDI_ERR(&qedi->dbg_ctx, "Recv Unknown Event %u\n",
 131                          fw_event_code);
 132         }
 133
 134         return rval;
 135 }
 136
 137 static int qedi_uio_open(struct uio_info *uinfo, struct inode *inode)
 138 {
 139         struct qedi_uio_dev *udev = uinfo->priv;
 140         struct qedi_ctx *qedi = udev->qedi;
 141
 142         if (!capable(CAP_NET_ADMIN))
 143                 return -EPERM;
 144
 145         if (udev->uio_dev != -1)
 146                 return -EBUSY;
 147
 148         rtnl_lock();
 149         udev->uio_dev = iminor(inode);
 150         qedi_reset_uio_rings(udev);
 151         set_bit(UIO_DEV_OPENED, &qedi->flags);
 152         rtnl_unlock();
 153
 154         return 0;
 155 }
 156
 157 static int qedi_uio_close(struct uio_info *uinfo, struct inode *inode)
 158 {
 159         struct qedi_uio_dev *udev = uinfo->priv;
 160         struct qedi_ctx *qedi = udev->qedi;
 161
 162         udev->uio_dev = -1;
 163         clear_bit(UIO_DEV_OPENED, &qedi->flags);
 164         qedi_ll2_free_skbs(qedi);
 165         return 0;
 166 }
 167
 168 static void __qedi_free_uio_rings(struct qedi_uio_dev *udev)
 169 {
 170         if (udev->uctrl) {
 171                 free_page((unsigned long)udev->uctrl);
 172                 udev->uctrl = NULL;
 173         }
 174
 175         if (udev->ll2_ring) {
 176                 free_page((unsigned long)udev->ll2_ring);
 177                 udev->ll2_ring = NULL;
 178         }
 179
 180         if (udev->ll2_buf) {
 181                 free_pages((unsigned long)udev->ll2_buf, 2);
 182                 udev->ll2_buf = NULL;
 183         }
 184 }
 185
 186 static void __qedi_free_uio(struct qedi_uio_dev *udev)
 187 {
 188         uio_unregister_device(&udev->qedi_uinfo);
 189
 190         __qedi_free_uio_rings(udev);
 191
 192         pci_dev_put(udev->pdev);
 193         kfree(udev);
 194 }
 195
 196 static void qedi_free_uio(struct qedi_uio_dev *udev)
 197 {
 198         if (!udev)
 199                 return;
 200
 201         list_del_init(&udev->list);
 202         __qedi_free_uio(udev);
 203 }
 204
 205 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev)
 206 {
 207         struct qedi_ctx *qedi = NULL;
 208         struct qedi_uio_ctrl *uctrl = NULL;
 209
 210         qedi = udev->qedi;
 211         uctrl = udev->uctrl;
 212
 213         spin_lock_bh(&qedi->ll2_lock);
 214         uctrl->host_rx_cons = 0;
 215         uctrl->hw_rx_prod = 0;
 216         uctrl->hw_rx_bd_prod = 0;
 217         uctrl->host_rx_bd_cons = 0;
 218
 219         memset(udev->ll2_ring, 0, udev->ll2_ring_size);
 220         memset(udev->ll2_buf, 0, udev->ll2_buf_size);
 221         spin_unlock_bh(&qedi->ll2_lock);
 222 }
 223
 224 static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev)
 225 {
 226         int rc = 0;
 227
 228         if (udev->ll2_ring || udev->ll2_buf)
 229                 return rc;
 230
 231         /* Memory for control area.  */
 232         udev->uctrl = (void *)get_zeroed_page(GFP_KERNEL);
 233         if (!udev->uctrl)
 234                 return -ENOMEM;
 235
 236         /* Allocating memory for LL2 ring  */
 237         udev->ll2_ring_size = QEDI_PAGE_SIZE;
 238         udev->ll2_ring = (void *)get_zeroed_page(GFP_KERNEL | __GFP_COMP);
 239         if (!udev->ll2_ring) {
 240                 rc = -ENOMEM;
 241                 goto exit_alloc_ring;
 242         }
 243
 244         /* Allocating memory for Tx/Rx pkt buffer */
 245         udev->ll2_buf_size = TX_RX_RING * qedi_ll2_buf_size;
 246         udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size);
 247         udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP |
 248                                                  __GFP_ZERO, 2);
 249         if (!udev->ll2_buf) {
 250                 rc = -ENOMEM;
 251                 goto exit_alloc_buf;
 252         }
 253         return rc;
 254
 255 exit_alloc_buf:
 256         free_page((unsigned long)udev->ll2_ring);
 257         udev->ll2_ring = NULL;
 258 exit_alloc_ring:
 259         return rc;
 260 }
 261
 262 static int qedi_alloc_uio_rings(struct qedi_ctx *qedi)
 263 {
 264         struct qedi_uio_dev *udev = NULL;
 265         int rc = 0;
 266
 267         list_for_each_entry(udev, &qedi_udev_list, list) {
 268                 if (udev->pdev == qedi->pdev) {
 269                         udev->qedi = qedi;
 270                         if (__qedi_alloc_uio_rings(udev)) {
 271                                 udev->qedi = NULL;
 272                                 return -ENOMEM;
 273                         }
 274                         qedi->udev = udev;
 275                         return 0;
 276                 }
 277         }
 278
 279         udev = kzalloc(sizeof(*udev), GFP_KERNEL);
 280         if (!udev) {
 281                 rc = -ENOMEM;
 282                 goto err_udev;
 283         }
 284
 285         udev->uio_dev = -1;
 286
 287         udev->qedi = qedi;
 288         udev->pdev = qedi->pdev;
 289
 290         rc = __qedi_alloc_uio_rings(udev);
 291         if (rc)
 292                 goto err_uctrl;
 293
 294         list_add(&udev->list, &qedi_udev_list);
 295
 296         pci_dev_get(udev->pdev);
 297         qedi->udev = udev;
 298
 299         udev->tx_pkt = udev->ll2_buf;
 300         udev->rx_pkt = udev->ll2_buf + qedi_ll2_buf_size;
 301         return 0;
 302
 303  err_uctrl:
 304         kfree(udev);
 305  err_udev:
 306         return -ENOMEM;
 307 }
 308
 309 static int qedi_init_uio(struct qedi_ctx *qedi)
 310 {
 311         struct qedi_uio_dev *udev = qedi->udev;
 312         struct uio_info *uinfo;
 313         int ret = 0;
 314
 315         if (!udev)
 316                 return -ENOMEM;
 317
 318         uinfo = &udev->qedi_uinfo;
 319
 320         uinfo->mem[0].addr = (unsigned long)udev->uctrl;
 321         uinfo->mem[0].size = sizeof(struct qedi_uio_ctrl);
 322         uinfo->mem[0].memtype = UIO_MEM_LOGICAL;
 323
 324         uinfo->mem[1].addr = (unsigned long)udev->ll2_ring;
 325         uinfo->mem[1].size = udev->ll2_ring_size;
 326         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
 327
 328         uinfo->mem[2].addr = (unsigned long)udev->ll2_buf;
 329         uinfo->mem[2].size = udev->ll2_buf_size;
 330         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
 331
 332         uinfo->name = "qedi_uio";
 333         uinfo->version = QEDI_MODULE_VERSION;
 334         uinfo->irq = UIO_IRQ_CUSTOM;
 335
 336         uinfo->open = qedi_uio_open;
 337         uinfo->release = qedi_uio_close;
 338
 339         if (udev->uio_dev == -1) {
 340                 if (!uinfo->priv) {
 341                         uinfo->priv = udev;
 342
 343                         ret = uio_register_device(&udev->pdev->dev, uinfo);
 344                         if (ret) {
 345                                 QEDI_ERR(&qedi->dbg_ctx,
 346                                          "UIO registration failed\n");
 347                         }
 348                 }
 349         }
 350
 351         return ret;
 352 }
 353
 354 static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi,
 355                                   struct qed_sb_info *sb_info, u16 sb_id)
 356 {
 357         struct status_block_e4 *sb_virt;
 358         dma_addr_t sb_phys;
 359         int ret;
 360
 361         sb_virt = dma_alloc_coherent(&qedi->pdev->dev,
 362                                      sizeof(struct status_block_e4), &sb_phys,
 363                                      GFP_KERNEL);
 364         if (!sb_virt) {
 365                 QEDI_ERR(&qedi->dbg_ctx,
 366                          "Status block allocation failed for id = %d.\n",
 367                           sb_id);
 368                 return -ENOMEM;
 369         }
 370
 371         ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys,
 372                                        sb_id, QED_SB_TYPE_STORAGE);
 373         if (ret) {
 374                 QEDI_ERR(&qedi->dbg_ctx,
 375                          "Status block initialization failed for id = %d.\n",
 376                           sb_id);
 377                 return ret;
 378         }
 379
 380         return 0;
 381 }
 382
 383 static void qedi_free_sb(struct qedi_ctx *qedi)
 384 {
 385         struct qed_sb_info *sb_info;
 386         int id;
 387
 388         for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
 389                 sb_info = &qedi->sb_array[id];
 390                 if (sb_info->sb_virt)
 391                         dma_free_coherent(&qedi->pdev->dev,
 392                                           sizeof(*sb_info->sb_virt),
 393                                           (void *)sb_info->sb_virt,
 394                                           sb_info->sb_phys);
 395         }
 396 }
 397
 398 static void qedi_free_fp(struct qedi_ctx *qedi)
 399 {
 400         kfree(qedi->fp_array);
 401         kfree(qedi->sb_array);
 402 }
 403
 404 static void qedi_destroy_fp(struct qedi_ctx *qedi)
 405 {
 406         qedi_free_sb(qedi);
 407         qedi_free_fp(qedi);
 408 }
 409
 410 static int qedi_alloc_fp(struct qedi_ctx *qedi)
 411 {
 412         int ret = 0;
 413
 414         qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
 415                                  sizeof(struct qedi_fastpath), GFP_KERNEL);
 416         if (!qedi->fp_array) {
 417                 QEDI_ERR(&qedi->dbg_ctx,
 418                          "fastpath fp array allocation failed.\n");
 419                 return -ENOMEM;
 420         }
 421
 422         qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
 423                                  sizeof(struct qed_sb_info), GFP_KERNEL);
 424         if (!qedi->sb_array) {
 425                 QEDI_ERR(&qedi->dbg_ctx,
 426                          "fastpath sb array allocation failed.\n");
 427                 ret = -ENOMEM;
 428                 goto free_fp;
 429         }
 430
 431         return ret;
 432
 433 free_fp:
 434         qedi_free_fp(qedi);
 435         return ret;
 436 }
 437
 438 static void qedi_int_fp(struct qedi_ctx *qedi)
 439 {
 440         struct qedi_fastpath *fp;
 441         int id;
 442
 443         memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
 444                sizeof(*qedi->fp_array));
 445         memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
 446                sizeof(*qedi->sb_array));
 447
 448         for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
 449                 fp = &qedi->fp_array[id];
 450                 fp->sb_info = &qedi->sb_array[id];
 451                 fp->sb_id = id;
 452                 fp->qedi = qedi;
 453                 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
 454                          "qedi", id);
 455
 456                 /* fp_array[i] ---- irq cookie
 457                  * So init data which is needed in int ctx
 458                  */
 459         }
 460 }
 461
 462 static int qedi_prepare_fp(struct qedi_ctx *qedi)
 463 {
 464         struct qedi_fastpath *fp;
 465         int id, ret = 0;
 466
 467         ret = qedi_alloc_fp(qedi);
 468         if (ret)
 469                 goto err;
 470
 471         qedi_int_fp(qedi);
 472
 473         for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
 474                 fp = &qedi->fp_array[id];
 475                 ret = qedi_alloc_and_init_sb(qedi, fp->sb_info, fp->sb_id);
 476                 if (ret) {
 477                         QEDI_ERR(&qedi->dbg_ctx,
 478                                  "SB allocation and initialization failed.\n");
 479                         ret = -EIO;
 480                         goto err_init;
 481                 }
 482         }
 483
 484         return 0;
 485
 486 err_init:
 487         qedi_free_sb(qedi);
 488         qedi_free_fp(qedi);
 489 err:
 490         return ret;
 491 }
 492
 493 static int qedi_setup_cid_que(struct qedi_ctx *qedi)
 494 {
 495         int i;
 496
 497         qedi->cid_que.cid_que_base = kmalloc_array(qedi->max_active_conns,
 498                                                    sizeof(u32), GFP_KERNEL);
 499         if (!qedi->cid_que.cid_que_base)
 500                 return -ENOMEM;
 501
 502         qedi->cid_que.conn_cid_tbl = kmalloc_array(qedi->max_active_conns,
 503                                                    sizeof(struct qedi_conn *),
 504                                                    GFP_KERNEL);
 505         if (!qedi->cid_que.conn_cid_tbl) {
 506                 kfree(qedi->cid_que.cid_que_base);
 507                 qedi->cid_que.cid_que_base = NULL;
 508                 return -ENOMEM;
 509         }
 510
 511         qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base;
 512         qedi->cid_que.cid_q_prod_idx = 0;
 513         qedi->cid_que.cid_q_cons_idx = 0;
 514         qedi->cid_que.cid_q_max_idx = qedi->max_active_conns;
 515         qedi->cid_que.cid_free_cnt = qedi->max_active_conns;
 516
 517         for (i = 0; i < qedi->max_active_conns; i++) {
 518                 qedi->cid_que.cid_que[i] = i;
 519                 qedi->cid_que.conn_cid_tbl[i] = NULL;
 520         }
 521
 522         return 0;
 523 }
 524
 525 static void qedi_release_cid_que(struct qedi_ctx *qedi)
 526 {
 527         kfree(qedi->cid_que.cid_que_base);
 528         qedi->cid_que.cid_que_base = NULL;
 529
 530         kfree(qedi->cid_que.conn_cid_tbl);
 531         qedi->cid_que.conn_cid_tbl = NULL;
 532 }
 533
 534 static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size,
 535                             u16 start_id, u16 next)
 536 {
 537         id_tbl->start = start_id;
 538         id_tbl->max = size;
 539         id_tbl->next = next;
 540         spin_lock_init(&id_tbl->lock);
 541         id_tbl->table = kcalloc(BITS_TO_LONGS(size), sizeof(long), GFP_KERNEL);
 542         if (!id_tbl->table)
 543                 return -ENOMEM;
 544
 545         return 0;
 546 }
 547
 548 static void qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl)
 549 {
 550         kfree(id_tbl->table);
 551         id_tbl->table = NULL;
 552 }
 553
 554 int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id)
 555 {
 556         int ret = -1;
 557
 558         id -= id_tbl->start;
 559         if (id >= id_tbl->max)
 560                 return ret;
 561
 562         spin_lock(&id_tbl->lock);
 563         if (!test_bit(id, id_tbl->table)) {
 564                 set_bit(id, id_tbl->table);
 565                 ret = 0;
 566         }
 567         spin_unlock(&id_tbl->lock);
 568         return ret;
 569 }
 570
 571 u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl)
 572 {
 573         u16 id;
 574
 575         spin_lock(&id_tbl->lock);
 576         id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
 577         if (id >= id_tbl->max) {
 578                 id = QEDI_LOCAL_PORT_INVALID;
 579                 if (id_tbl->next != 0) {
 580                         id = find_first_zero_bit(id_tbl->table, id_tbl->next);
 581                         if (id >= id_tbl->next)
 582                                 id = QEDI_LOCAL_PORT_INVALID;
 583                 }
 584         }
 585
 586         if (id < id_tbl->max) {
 587                 set_bit(id, id_tbl->table);
 588                 id_tbl->next = (id + 1) & (id_tbl->max - 1);
 589                 id += id_tbl->start;
 590         }
 591
 592         spin_unlock(&id_tbl->lock);
 593
 594         return id;
 595 }
 596
 597 void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id)
 598 {
 599         if (id == QEDI_LOCAL_PORT_INVALID)
 600                 return;
 601
 602         id -= id_tbl->start;
 603         if (id >= id_tbl->max)
 604                 return;
 605
 606         clear_bit(id, id_tbl->table);
 607 }
 608
 609 static void qedi_cm_free_mem(struct qedi_ctx *qedi)
 610 {
 611         kfree(qedi->ep_tbl);
 612         qedi->ep_tbl = NULL;
 613         qedi_free_id_tbl(&qedi->lcl_port_tbl);
 614 }
 615
 616 static int qedi_cm_alloc_mem(struct qedi_ctx *qedi)
 617 {
 618         u16 port_id;
 619
 620         qedi->ep_tbl = kzalloc((qedi->max_active_conns *
 621                                 sizeof(struct qedi_endpoint *)), GFP_KERNEL);
 622         if (!qedi->ep_tbl)
 623                 return -ENOMEM;
 624         port_id = prandom_u32() % QEDI_LOCAL_PORT_RANGE;
 625         if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE,
 626                              QEDI_LOCAL_PORT_MIN, port_id)) {
 627                 qedi_cm_free_mem(qedi);
 628                 return -ENOMEM;
 629         }
 630
 631         return 0;
 632 }
 633
 634 static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev)
 635 {
 636         struct Scsi_Host *shost;
 637         struct qedi_ctx *qedi = NULL;
 638
 639         shost = iscsi_host_alloc(&qedi_host_template,
 640                                  sizeof(struct qedi_ctx), 0);
 641         if (!shost) {
 642                 QEDI_ERR(NULL, "Could not allocate shost\n");
 643                 goto exit_setup_shost;
 644         }
 645
 646         shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA - 1;
 647         shost->max_channel = 0;
 648         shost->max_lun = ~0;
 649         shost->max_cmd_len = 16;
 650         shost->transportt = qedi_scsi_transport;
 651
 652         qedi = iscsi_host_priv(shost);
 653         memset(qedi, 0, sizeof(*qedi));
 654         qedi->shost = shost;
 655         qedi->dbg_ctx.host_no = shost->host_no;
 656         qedi->pdev = pdev;
 657         qedi->dbg_ctx.pdev = pdev;
 658         qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA;
 659         qedi->max_sqes = QEDI_SQ_SIZE;
 660
 661         shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi);
 662
 663         pci_set_drvdata(pdev, qedi);
 664
 665 exit_setup_shost:
 666         return qedi;
 667 }
 668
 669 static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2)
 670 {
 671         struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
 672         struct skb_work_list *work;
 673         struct ethhdr *eh;
 674
 675         if (!qedi) {
 676                 QEDI_ERR(NULL, "qedi is NULL\n");
 677                 return -1;
 678         }
 679
 680         if (!test_bit(UIO_DEV_OPENED, &qedi->flags)) {
 681                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UIO,
 682                           "UIO DEV is not opened\n");
 683                 kfree_skb(skb);
 684                 return 0;
 685         }
 686
 687         eh = (struct ethhdr *)skb->data;
 688         /* Undo VLAN encapsulation */
 689         if (eh->h_proto == htons(ETH_P_8021Q)) {
 690                 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
 691                 eh = (struct ethhdr *)skb_pull(skb, VLAN_HLEN);
 692                 skb_reset_mac_header(skb);
 693         }
 694
 695         /* Filter out non FIP/FCoE frames here to free them faster */
 696         if (eh->h_proto != htons(ETH_P_ARP) &&
 697             eh->h_proto != htons(ETH_P_IP) &&
 698             eh->h_proto != htons(ETH_P_IPV6)) {
 699                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
 700                           "Dropping frame ethertype [0x%x] len [0x%x].\n",
 701                           eh->h_proto, skb->len);
 702                 kfree_skb(skb);
 703                 return 0;
 704         }
 705
 706         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
 707                   "Allowed frame ethertype [0x%x] len [0x%x].\n",
 708                   eh->h_proto, skb->len);
 709
 710         work = kzalloc(sizeof(*work), GFP_ATOMIC);
 711         if (!work) {
 712                 QEDI_WARN(&qedi->dbg_ctx,
 713                           "Could not allocate work so dropping frame.\n");
 714                 kfree_skb(skb);
 715                 return 0;
 716         }
 717
 718         INIT_LIST_HEAD(&work->list);
 719         work->skb = skb;
 720
 721         if (skb_vlan_tag_present(skb))
 722                 work->vlan_id = skb_vlan_tag_get(skb);
 723
 724         if (work->vlan_id)
 725                 __vlan_insert_tag(work->skb, htons(ETH_P_8021Q), work->vlan_id);
 726
 727         spin_lock_bh(&qedi->ll2_lock);
 728         list_add_tail(&work->list, &qedi->ll2_skb_list);
 729         spin_unlock_bh(&qedi->ll2_lock);
 730
 731         wake_up_process(qedi->ll2_recv_thread);
 732
 733         return 0;
 734 }
 735
 736 /* map this skb to iscsiuio mmaped region */
 737 static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb,
 738                                 u16 vlan_id)
 739 {
 740         struct qedi_uio_dev *udev = NULL;
 741         struct qedi_uio_ctrl *uctrl = NULL;
 742         struct qedi_rx_bd rxbd;
 743         struct qedi_rx_bd *p_rxbd;
 744         u32 rx_bd_prod;
 745         void *pkt;
 746         int len = 0;
 747         u32 prod;
 748
 749         if (!qedi) {
 750                 QEDI_ERR(NULL, "qedi is NULL\n");
 751                 return -1;
 752         }
 753
 754         udev = qedi->udev;
 755         uctrl = udev->uctrl;
 756
 757         ++uctrl->hw_rx_prod_cnt;
 758         prod = (uctrl->hw_rx_prod + 1) % RX_RING;
 759
 760         pkt = udev->rx_pkt + (prod * qedi_ll2_buf_size);
 761         len = min_t(u32, skb->len, (u32)qedi_ll2_buf_size);
 762         memcpy(pkt, skb->data, len);
 763
 764         memset(&rxbd, 0, sizeof(rxbd));
 765         rxbd.rx_pkt_index = prod;
 766         rxbd.rx_pkt_len = len;
 767         rxbd.vlan_id = vlan_id;
 768
 769         uctrl->hw_rx_bd_prod = (uctrl->hw_rx_bd_prod + 1) % QEDI_NUM_RX_BD;
 770         rx_bd_prod = uctrl->hw_rx_bd_prod;
 771         p_rxbd = (struct qedi_rx_bd *)udev->ll2_ring;
 772         p_rxbd += rx_bd_prod;
 773
 774         memcpy(p_rxbd, &rxbd, sizeof(rxbd));
 775
 776         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
 777                   "hw_rx_prod [%d] prod [%d] hw_rx_bd_prod [%d] rx_pkt_idx [%d] rx_len [%d].\n",
 778                   uctrl->hw_rx_prod, prod, uctrl->hw_rx_bd_prod,
 779                   rxbd.rx_pkt_index, rxbd.rx_pkt_len);
 780         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
 781                   "host_rx_cons [%d] hw_rx_bd_cons [%d].\n",
 782                   uctrl->host_rx_cons, uctrl->host_rx_bd_cons);
 783
 784         uctrl->hw_rx_prod = prod;
 785
 786         /* notify the iscsiuio about new packet */
 787         uio_event_notify(&udev->qedi_uinfo);
 788
 789         return 0;
 790 }
 791
 792 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi)
 793 {
 794         struct skb_work_list *work, *work_tmp;
 795
 796         spin_lock_bh(&qedi->ll2_lock);
 797         list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) {
 798                 list_del(&work->list);
 799                 kfree_skb(work->skb);
 800                 kfree(work);
 801         }
 802         spin_unlock_bh(&qedi->ll2_lock);
 803 }
 804
 805 static int qedi_ll2_recv_thread(void *arg)
 806 {
 807         struct qedi_ctx *qedi = (struct qedi_ctx *)arg;
 808         struct skb_work_list *work, *work_tmp;
 809
 810         set_user_nice(current, -20);
 811
 812         while (!kthread_should_stop()) {
 813                 spin_lock_bh(&qedi->ll2_lock);
 814                 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list,
 815                                          list) {
 816                         list_del(&work->list);
 817                         qedi_ll2_process_skb(qedi, work->skb, work->vlan_id);
 818                         kfree_skb(work->skb);
 819                         kfree(work);
 820                 }
 821                 set_current_state(TASK_INTERRUPTIBLE);
 822                 spin_unlock_bh(&qedi->ll2_lock);
 823                 schedule();
 824         }
 825
 826         __set_current_state(TASK_RUNNING);
 827         return 0;
 828 }
 829
 830 static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi)
 831 {
 832         u8 num_sq_pages;
 833         u32 log_page_size;
 834         int rval = 0;
 835
 836
 837         num_sq_pages = (MAX_OUTSTANDING_TASKS_PER_CON * 8) / QEDI_PAGE_SIZE;
 838
 839         qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi);
 840
 841         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
 842                   "Number of CQ count is %d\n", qedi->num_queues);
 843
 844         memset(&qedi->pf_params.iscsi_pf_params, 0,
 845                sizeof(qedi->pf_params.iscsi_pf_params));
 846
 847         qedi->p_cpuq = dma_alloc_coherent(&qedi->pdev->dev,
 848                         qedi->num_queues * sizeof(struct qedi_glbl_q_params),
 849                         &qedi->hw_p_cpuq, GFP_KERNEL);
 850         if (!qedi->p_cpuq) {
 851                 QEDI_ERR(&qedi->dbg_ctx, "dma_alloc_coherent fail\n");
 852                 rval = -1;
 853                 goto err_alloc_mem;
 854         }
 855
 856         rval = qedi_alloc_global_queues(qedi);
 857         if (rval) {
 858                 QEDI_ERR(&qedi->dbg_ctx, "Global queue allocation failed.\n");
 859                 rval = -1;
 860                 goto err_alloc_mem;
 861         }
 862
 863         qedi->pf_params.iscsi_pf_params.num_cons = QEDI_MAX_ISCSI_CONNS_PER_HBA;
 864         qedi->pf_params.iscsi_pf_params.num_tasks = QEDI_MAX_ISCSI_TASK;
 865         qedi->pf_params.iscsi_pf_params.half_way_close_timeout = 10;
 866         qedi->pf_params.iscsi_pf_params.num_sq_pages_in_ring = num_sq_pages;
 867         qedi->pf_params.iscsi_pf_params.num_r2tq_pages_in_ring = num_sq_pages;
 868         qedi->pf_params.iscsi_pf_params.num_uhq_pages_in_ring = num_sq_pages;
 869         qedi->pf_params.iscsi_pf_params.num_queues = qedi->num_queues;
 870         qedi->pf_params.iscsi_pf_params.debug_mode = qedi_fw_debug;
 871         qedi->pf_params.iscsi_pf_params.two_msl_timer = 4000;
 872         qedi->pf_params.iscsi_pf_params.max_fin_rt = 2;
 873
 874         for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) {
 875                 if ((1 << log_page_size) == QEDI_PAGE_SIZE)
 876                         break;
 877         }
 878         qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size;
 879
 880         qedi->pf_params.iscsi_pf_params.glbl_q_params_addr =
 881                                                            (u64)qedi->hw_p_cpuq;
 882
 883         /* RQ BDQ initializations.
 884          * rq_num_entries: suggested value for Initiator is 16 (4KB RQ)
 885          * rqe_log_size: 8 for 256B RQE
 886          */
 887         qedi->pf_params.iscsi_pf_params.rqe_log_size = 8;
 888         /* BDQ address and size */
 889         qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] =
 890                                                         qedi->bdq_pbl_list_dma;
 891         qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] =
 892                                                 qedi->bdq_pbl_list_num_entries;
 893         qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE;
 894
 895         /* cq_num_entries: num_tasks + rq_num_entries */
 896         qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048;
 897
 898         qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX;
 899         qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1;
 900
 901 err_alloc_mem:
 902         return rval;
 903 }
 904
 905 /* Free DMA coherent memory for array of queue pointers we pass to qed */
 906 static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi)
 907 {
 908         size_t size = 0;
 909
 910         if (qedi->p_cpuq) {
 911                 size = qedi->num_queues * sizeof(struct qedi_glbl_q_params);
 912                 dma_free_coherent(&qedi->pdev->dev, size, qedi->p_cpuq,
 913                                     qedi->hw_p_cpuq);
 914         }
 915
 916         qedi_free_global_queues(qedi);
 917
 918         kfree(qedi->global_queues);
 919 }
 920
 921 static void qedi_get_boot_tgt_info(struct nvm_iscsi_block *block,
 922                                    struct qedi_boot_target *tgt, u8 index)
 923 {
 924         u32 ipv6_en;
 925
 926         ipv6_en = !!(block->generic.ctrl_flags &
 927                      NVM_ISCSI_CFG_GEN_IPV6_ENABLED);
 928
 929         snprintf(tgt->iscsi_name, sizeof(tgt->iscsi_name), "%s",
 930                  block->target[index].target_name.byte);
 931
 932         tgt->ipv6_en = ipv6_en;
 933
 934         if (ipv6_en)
 935                 snprintf(tgt->ip_addr, IPV6_LEN, "%pI6\n",
 936                          block->target[index].ipv6_addr.byte);
 937         else
 938                 snprintf(tgt->ip_addr, IPV4_LEN, "%pI4\n",
 939                          block->target[index].ipv4_addr.byte);
 940 }
 941
 942 static int qedi_find_boot_info(struct qedi_ctx *qedi,
 943                                struct qed_mfw_tlv_iscsi *iscsi,
 944                                struct nvm_iscsi_block *block)
 945 {
 946         struct qedi_boot_target *pri_tgt = NULL, *sec_tgt = NULL;
 947         u32 pri_ctrl_flags = 0, sec_ctrl_flags = 0, found = 0;
 948         struct iscsi_cls_session *cls_sess;
 949         struct iscsi_cls_conn *cls_conn;
 950         struct qedi_conn *qedi_conn;
 951         struct iscsi_session *sess;
 952         struct iscsi_conn *conn;
 953         char ep_ip_addr[64];
 954         int i, ret = 0;
 955
 956         pri_ctrl_flags = !!(block->target[0].ctrl_flags &
 957                                         NVM_ISCSI_CFG_TARGET_ENABLED);
 958         if (pri_ctrl_flags) {
 959                 pri_tgt = kzalloc(sizeof(*pri_tgt), GFP_KERNEL);
 960                 if (!pri_tgt)
 961                         return -1;
 962                 qedi_get_boot_tgt_info(block, pri_tgt, 0);
 963         }
 964
 965         sec_ctrl_flags = !!(block->target[1].ctrl_flags &
 966                                         NVM_ISCSI_CFG_TARGET_ENABLED);
 967         if (sec_ctrl_flags) {
 968                 sec_tgt = kzalloc(sizeof(*sec_tgt), GFP_KERNEL);
 969                 if (!sec_tgt) {
 970                         ret = -1;
 971                         goto free_tgt;
 972                 }
 973                 qedi_get_boot_tgt_info(block, sec_tgt, 1);
 974         }
 975
 976         for (i = 0; i < qedi->max_active_conns; i++) {
 977                 qedi_conn = qedi_get_conn_from_id(qedi, i);
 978                 if (!qedi_conn)
 979                         continue;
 980
 981                 if (qedi_conn->ep->ip_type == TCP_IPV4)
 982                         snprintf(ep_ip_addr, IPV4_LEN, "%pI4\n",
 983                                  qedi_conn->ep->dst_addr);
 984                 else
 985                         snprintf(ep_ip_addr, IPV6_LEN, "%pI6\n",
 986                                  qedi_conn->ep->dst_addr);
 987
 988                 cls_conn = qedi_conn->cls_conn;
 989                 conn = cls_conn->dd_data;
 990                 cls_sess = iscsi_conn_to_session(cls_conn);
 991                 sess = cls_sess->dd_data;
 992
 993                 if (!iscsi_is_session_online(cls_sess))
 994                         continue;
 995
 996                 if (!sess->targetname)
 997                         continue;
 998
 999                 if (pri_ctrl_flags) {
1000                         if (!strcmp(pri_tgt->iscsi_name, sess->targetname) &&
1001                             !strcmp(pri_tgt->ip_addr, ep_ip_addr)) {
1002                                 found = 1;
1003                                 break;
1004                         }
1005                 }
1006
1007                 if (sec_ctrl_flags) {
1008                         if (!strcmp(sec_tgt->iscsi_name, sess->targetname) &&
1009                             !strcmp(sec_tgt->ip_addr, ep_ip_addr)) {
1010                                 found = 1;
1011                                 break;
1012                         }
1013                 }
1014         }
1015
1016         if (found) {
1017                 if (conn->hdrdgst_en) {
1018                         iscsi->header_digest_set = true;
1019                         iscsi->header_digest = 1;
1020                 }
1021
1022                 if (conn->datadgst_en) {
1023                         iscsi->data_digest_set = true;
1024                         iscsi->data_digest = 1;
1025                 }
1026                 iscsi->boot_taget_portal_set = true;
1027                 iscsi->boot_taget_portal = sess->tpgt;
1028
1029         } else {
1030                 ret = -1;
1031         }
1032
1033         if (sec_ctrl_flags)
1034                 kfree(sec_tgt);
1035 free_tgt:
1036         if (pri_ctrl_flags)
1037                 kfree(pri_tgt);
1038
1039         return ret;
1040 }
1041
1042 static void qedi_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
1043 {
1044         struct qedi_ctx *qedi;
1045
1046         if (!dev) {
1047                 QEDI_INFO(NULL, QEDI_LOG_EVT,
1048                           "dev is NULL so ignoring get_generic_tlv_data request.\n");
1049                 return;
1050         }
1051         qedi = (struct qedi_ctx *)dev;
1052
1053         memset(data, 0, sizeof(struct qed_generic_tlvs));
1054         ether_addr_copy(data->mac[0], qedi->mac);
1055 }
1056
1057 /*
1058  * Protocol TLV handler
1059  */
1060 static void qedi_get_protocol_tlv_data(void *dev, void *data)
1061 {
1062         struct qed_mfw_tlv_iscsi *iscsi = data;
1063         struct qed_iscsi_stats *fw_iscsi_stats;
1064         struct nvm_iscsi_block *block = NULL;
1065         u32 chap_en = 0, mchap_en = 0;
1066         struct qedi_ctx *qedi = dev;
1067         int rval = 0;
1068
1069         fw_iscsi_stats = kmalloc(sizeof(*fw_iscsi_stats), GFP_KERNEL);
1070         if (!fw_iscsi_stats) {
1071                 QEDI_ERR(&qedi->dbg_ctx,
1072                          "Could not allocate memory for fw_iscsi_stats.\n");
1073                 goto exit_get_data;
1074         }
1075
1076         mutex_lock(&qedi->stats_lock);
1077         /* Query firmware for offload stats */
1078         qedi_ops->get_stats(qedi->cdev, fw_iscsi_stats);
1079         mutex_unlock(&qedi->stats_lock);
1080
1081         iscsi->rx_frames_set = true;
1082         iscsi->rx_frames = fw_iscsi_stats->iscsi_rx_packet_cnt;
1083         iscsi->rx_bytes_set = true;
1084         iscsi->rx_bytes = fw_iscsi_stats->iscsi_rx_bytes_cnt;
1085         iscsi->tx_frames_set = true;
1086         iscsi->tx_frames = fw_iscsi_stats->iscsi_tx_packet_cnt;
1087         iscsi->tx_bytes_set = true;
1088         iscsi->tx_bytes = fw_iscsi_stats->iscsi_tx_bytes_cnt;
1089         iscsi->frame_size_set = true;
1090         iscsi->frame_size = qedi->ll2_mtu;
1091         block = qedi_get_nvram_block(qedi);
1092         if (block) {
1093                 chap_en = !!(block->generic.ctrl_flags &
1094                              NVM_ISCSI_CFG_GEN_CHAP_ENABLED);
1095                 mchap_en = !!(block->generic.ctrl_flags &
1096                               NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED);
1097
1098                 iscsi->auth_method_set = (chap_en || mchap_en) ? true : false;
1099                 iscsi->auth_method = 1;
1100                 if (chap_en)
1101                         iscsi->auth_method = 2;
1102                 if (mchap_en)
1103                         iscsi->auth_method = 3;
1104
1105                 iscsi->tx_desc_size_set = true;
1106                 iscsi->tx_desc_size = QEDI_SQ_SIZE;
1107                 iscsi->rx_desc_size_set = true;
1108                 iscsi->rx_desc_size = QEDI_CQ_SIZE;
1109
1110                 /* tpgt, hdr digest, data digest */
1111                 rval = qedi_find_boot_info(qedi, iscsi, block);
1112                 if (rval)
1113                         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1114                                   "Boot target not set");
1115         }
1116
1117         kfree(fw_iscsi_stats);
1118 exit_get_data:
1119         return;
1120 }
1121
1122 void qedi_schedule_hw_err_handler(void *dev,
1123                                   enum qed_hw_err_type err_type)
1124 {
1125         struct qedi_ctx *qedi = (struct qedi_ctx *)dev;
1126         unsigned long override_flags = qedi_flags_override;
1127
1128         if (override_flags && test_bit(QEDI_ERR_OVERRIDE_EN, &override_flags))
1129                 qedi->qedi_err_flags = qedi_flags_override;
1130
1131         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1132                   "HW error handler scheduled, err=%d err_flags=0x%x\n",
1133                   err_type, qedi->qedi_err_flags);
1134
1135         switch (err_type) {
1136         case QED_HW_ERR_FAN_FAIL:
1137                 schedule_delayed_work(&qedi->board_disable_work, 0);
1138                 break;
1139         case QED_HW_ERR_MFW_RESP_FAIL:
1140         case QED_HW_ERR_HW_ATTN:
1141         case QED_HW_ERR_DMAE_FAIL:
1142         case QED_HW_ERR_RAMROD_FAIL:
1143         case QED_HW_ERR_FW_ASSERT:
1144                 /* Prevent HW attentions from being reasserted */
1145                 if (test_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags))
1146                         qedi_ops->common->attn_clr_enable(qedi->cdev, true);
1147
1148                 if (err_type == QED_HW_ERR_RAMROD_FAIL &&
1149                     test_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags))
1150                         qedi_ops->common->recovery_process(qedi->cdev);
1151
1152                 break;
1153         default:
1154                 break;
1155         }
1156 }
1157
1158 static void qedi_schedule_recovery_handler(void *dev)
1159 {
1160         struct qedi_ctx *qedi = dev;
1161
1162         QEDI_ERR(&qedi->dbg_ctx, "Recovery handler scheduled.\n");
1163
1164         if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags))
1165                 return;
1166
1167         atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
1168
1169         schedule_delayed_work(&qedi->recovery_work, 0);
1170 }
1171
1172 static void qedi_set_conn_recovery(struct iscsi_cls_session *cls_session)
1173 {
1174         struct iscsi_session *session = cls_session->dd_data;
1175         struct iscsi_conn *conn = session->leadconn;
1176         struct qedi_conn *qedi_conn = conn->dd_data;
1177
1178         qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn);
1179 }
1180
1181 static void qedi_link_update(void *dev, struct qed_link_output *link)
1182 {
1183         struct qedi_ctx *qedi = (struct qedi_ctx *)dev;
1184
1185         if (link->link_up) {
1186                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n");
1187                 atomic_set(&qedi->link_state, QEDI_LINK_UP);
1188         } else {
1189                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1190                           "Link Down event.\n");
1191                 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
1192                 iscsi_host_for_each_session(qedi->shost, qedi_set_conn_recovery);
1193         }
1194 }
1195
1196 static struct qed_iscsi_cb_ops qedi_cb_ops = {
1197         {
1198                 .link_update =          qedi_link_update,
1199                 .schedule_recovery_handler = qedi_schedule_recovery_handler,
1200                 .schedule_hw_err_handler = qedi_schedule_hw_err_handler,
1201                 .get_protocol_tlv_data = qedi_get_protocol_tlv_data,
1202                 .get_generic_tlv_data = qedi_get_generic_tlv_data,
1203         }
1204 };
1205
1206 static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe,
1207                           u16 que_idx, struct qedi_percpu_s *p)
1208 {
1209         struct qedi_work *qedi_work;
1210         struct qedi_conn *q_conn;
1211         struct qedi_cmd *qedi_cmd;
1212         u32 iscsi_cid;
1213         int rc = 0;
1214
1215         iscsi_cid  = cqe->cqe_common.conn_id;
1216         q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
1217         if (!q_conn) {
1218                 QEDI_WARN(&qedi->dbg_ctx,
1219                           "Session no longer exists for cid=0x%x!!\n",
1220                           iscsi_cid);
1221                 return -1;
1222         }
1223
1224         switch (cqe->cqe_common.cqe_type) {
1225         case ISCSI_CQE_TYPE_SOLICITED:
1226         case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE:
1227                 qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid);
1228                 if (!qedi_cmd) {
1229                         rc = -1;
1230                         break;
1231                 }
1232                 INIT_LIST_HEAD(&qedi_cmd->cqe_work.list);
1233                 qedi_cmd->cqe_work.qedi = qedi;
1234                 memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe));
1235                 qedi_cmd->cqe_work.que_idx = que_idx;
1236                 qedi_cmd->cqe_work.is_solicited = true;
1237                 list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list);
1238                 break;
1239         case ISCSI_CQE_TYPE_UNSOLICITED:
1240         case ISCSI_CQE_TYPE_DUMMY:
1241         case ISCSI_CQE_TYPE_TASK_CLEANUP:
1242                 qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC);
1243                 if (!qedi_work) {
1244                         rc = -1;
1245                         break;
1246                 }
1247                 INIT_LIST_HEAD(&qedi_work->list);
1248                 qedi_work->qedi = qedi;
1249                 memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe));
1250                 qedi_work->que_idx = que_idx;
1251                 qedi_work->is_solicited = false;
1252                 list_add_tail(&qedi_work->list, &p->work_list);
1253                 break;
1254         default:
1255                 rc = -1;
1256                 QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n");
1257         }
1258         return rc;
1259 }
1260
1261 static bool qedi_process_completions(struct qedi_fastpath *fp)
1262 {
1263         struct qedi_ctx *qedi = fp->qedi;
1264         struct qed_sb_info *sb_info = fp->sb_info;
1265         struct status_block_e4 *sb = sb_info->sb_virt;
1266         struct qedi_percpu_s *p = NULL;
1267         struct global_queue *que;
1268         u16 prod_idx;
1269         unsigned long flags;
1270         union iscsi_cqe *cqe;
1271         int cpu;
1272         int ret;
1273
1274         /* Get the current firmware producer index */
1275         prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
1276
1277         if (prod_idx >= QEDI_CQ_SIZE)
1278                 prod_idx = prod_idx % QEDI_CQ_SIZE;
1279
1280         que = qedi->global_queues[fp->sb_id];
1281         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1282                   "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n",
1283                   que, prod_idx, que->cq_cons_idx, fp->sb_id);
1284
1285         qedi->intr_cpu = fp->sb_id;
1286         cpu = smp_processor_id();
1287         p = &per_cpu(qedi_percpu, cpu);
1288
1289         if (unlikely(!p->iothread))
1290                 WARN_ON(1);
1291
1292         spin_lock_irqsave(&p->p_work_lock, flags);
1293         while (que->cq_cons_idx != prod_idx) {
1294                 cqe = &que->cq[que->cq_cons_idx];
1295
1296                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1297                           "cqe=%p prod_idx=%d cons_idx=%d.\n",
1298                           cqe, prod_idx, que->cq_cons_idx);
1299
1300                 ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p);
1301                 if (ret)
1302                         QEDI_WARN(&qedi->dbg_ctx,
1303                                   "Dropping CQE 0x%x for cid=0x%x.\n",
1304                                   que->cq_cons_idx, cqe->cqe_common.conn_id);
1305
1306                 que->cq_cons_idx++;
1307                 if (que->cq_cons_idx == QEDI_CQ_SIZE)
1308                         que->cq_cons_idx = 0;
1309         }
1310         wake_up_process(p->iothread);
1311         spin_unlock_irqrestore(&p->p_work_lock, flags);
1312
1313         return true;
1314 }
1315
1316 static bool qedi_fp_has_work(struct qedi_fastpath *fp)
1317 {
1318         struct qedi_ctx *qedi = fp->qedi;
1319         struct global_queue *que;
1320         struct qed_sb_info *sb_info = fp->sb_info;
1321         struct status_block_e4 *sb = sb_info->sb_virt;
1322         u16 prod_idx;
1323
1324         barrier();
1325
1326         /* Get the current firmware producer index */
1327         prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
1328
1329         /* Get the pointer to the global CQ this completion is on */
1330         que = qedi->global_queues[fp->sb_id];
1331
1332         /* prod idx wrap around uint16 */
1333         if (prod_idx >= QEDI_CQ_SIZE)
1334                 prod_idx = prod_idx % QEDI_CQ_SIZE;
1335
1336         return (que->cq_cons_idx != prod_idx);
1337 }
1338
1339 /* MSI-X fastpath handler code */
1340 static irqreturn_t qedi_msix_handler(int irq, void *dev_id)
1341 {
1342         struct qedi_fastpath *fp = dev_id;
1343         struct qedi_ctx *qedi = fp->qedi;
1344         bool wake_io_thread = true;
1345
1346         qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0);
1347
1348 process_again:
1349         wake_io_thread = qedi_process_completions(fp);
1350         if (wake_io_thread) {
1351                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1352                           "process already running\n");
1353         }
1354
1355         if (!qedi_fp_has_work(fp))
1356                 qed_sb_update_sb_idx(fp->sb_info);
1357
1358         /* Check for more work */
1359         rmb();
1360
1361         if (!qedi_fp_has_work(fp))
1362                 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
1363         else
1364                 goto process_again;
1365
1366         return IRQ_HANDLED;
1367 }
1368
1369 /* simd handler for MSI/INTa */
1370 static void qedi_simd_int_handler(void *cookie)
1371 {
1372         /* Cookie is qedi_ctx struct */
1373         struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
1374
1375         QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi);
1376 }
1377
1378 #define QEDI_SIMD_HANDLER_NUM           0
1379 static void qedi_sync_free_irqs(struct qedi_ctx *qedi)
1380 {
1381         int i;
1382         u16 idx;
1383
1384         if (qedi->int_info.msix_cnt) {
1385                 for (i = 0; i < qedi->int_info.used_cnt; i++) {
1386                         idx = i * qedi->dev_info.common.num_hwfns +
1387                         qedi_ops->common->get_affin_hwfn_idx(qedi->cdev);
1388
1389                         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1390                                   "Freeing IRQ #%d vector_idx=%d.\n", i, idx);
1391
1392                         synchronize_irq(qedi->int_info.msix[idx].vector);
1393                         irq_set_affinity_hint(qedi->int_info.msix[idx].vector,
1394                                               NULL);
1395                         free_irq(qedi->int_info.msix[idx].vector,
1396                                  &qedi->fp_array[i]);
1397                 }
1398         } else {
1399                 qedi_ops->common->simd_handler_clean(qedi->cdev,
1400                                                      QEDI_SIMD_HANDLER_NUM);
1401         }
1402
1403         qedi->int_info.used_cnt = 0;
1404         qedi_ops->common->set_fp_int(qedi->cdev, 0);
1405 }
1406
1407 static int qedi_request_msix_irq(struct qedi_ctx *qedi)
1408 {
1409         int i, rc, cpu;
1410         u16 idx;
1411
1412         cpu = cpumask_first(cpu_online_mask);
1413         for (i = 0; i < qedi->msix_count; i++) {
1414                 idx = i * qedi->dev_info.common.num_hwfns +
1415                           qedi_ops->common->get_affin_hwfn_idx(qedi->cdev);
1416
1417                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1418                           "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
1419                           qedi->dev_info.common.num_hwfns,
1420                           qedi_ops->common->get_affin_hwfn_idx(qedi->cdev));
1421
1422                 rc = request_irq(qedi->int_info.msix[idx].vector,
1423                                  qedi_msix_handler, 0, "qedi",
1424                                  &qedi->fp_array[i]);
1425                 if (rc) {
1426                         QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n");
1427                         qedi_sync_free_irqs(qedi);
1428                         return rc;
1429                 }
1430                 qedi->int_info.used_cnt++;
1431                 rc = irq_set_affinity_hint(qedi->int_info.msix[idx].vector,
1432                                            get_cpu_mask(cpu));
1433                 cpu = cpumask_next(cpu, cpu_online_mask);
1434         }
1435
1436         return 0;
1437 }
1438
1439 static int qedi_setup_int(struct qedi_ctx *qedi)
1440 {
1441         int rc = 0;
1442
1443         rc = qedi_ops->common->set_fp_int(qedi->cdev, qedi->num_queues);
1444         if (rc < 0)
1445                 goto exit_setup_int;
1446
1447         qedi->msix_count = rc;
1448
1449         rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info);
1450         if (rc)
1451                 goto exit_setup_int;
1452
1453         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1454                   "Number of msix_cnt = 0x%x num of cpus = 0x%x\n",
1455                    qedi->int_info.msix_cnt, num_online_cpus());
1456
1457         if (qedi->int_info.msix_cnt) {
1458                 rc = qedi_request_msix_irq(qedi);
1459                 goto exit_setup_int;
1460         } else {
1461                 qedi_ops->common->simd_handler_config(qedi->cdev, &qedi,
1462                                                       QEDI_SIMD_HANDLER_NUM,
1463                                                       qedi_simd_int_handler);
1464                 qedi->int_info.used_cnt = 1;
1465         }
1466
1467 exit_setup_int:
1468         return rc;
1469 }
1470
1471 static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1472 {
1473         if (qedi->iscsi_image)
1474                 dma_free_coherent(&qedi->pdev->dev,
1475                                   sizeof(struct qedi_nvm_iscsi_image),
1476                                   qedi->iscsi_image, qedi->nvm_buf_dma);
1477 }
1478
1479 static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1480 {
1481         qedi->iscsi_image = dma_alloc_coherent(&qedi->pdev->dev,
1482                                                sizeof(struct qedi_nvm_iscsi_image),
1483                                                &qedi->nvm_buf_dma, GFP_KERNEL);
1484         if (!qedi->iscsi_image) {
1485                 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n");
1486                 return -ENOMEM;
1487         }
1488         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1489                   "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_image,
1490                   qedi->nvm_buf_dma);
1491
1492         return 0;
1493 }
1494
1495 static void qedi_free_bdq(struct qedi_ctx *qedi)
1496 {
1497         int i;
1498
1499         if (qedi->bdq_pbl_list)
1500                 dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE,
1501                                   qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma);
1502
1503         if (qedi->bdq_pbl)
1504                 dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size,
1505                                   qedi->bdq_pbl, qedi->bdq_pbl_dma);
1506
1507         for (i = 0; i < QEDI_BDQ_NUM; i++) {
1508                 if (qedi->bdq[i].buf_addr) {
1509                         dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE,
1510                                           qedi->bdq[i].buf_addr,
1511                                           qedi->bdq[i].buf_dma);
1512                 }
1513         }
1514 }
1515
1516 static void qedi_free_global_queues(struct qedi_ctx *qedi)
1517 {
1518         int i;
1519         struct global_queue **gl = qedi->global_queues;
1520
1521         for (i = 0; i < qedi->num_queues; i++) {
1522                 if (!gl[i])
1523                         continue;
1524
1525                 if (gl[i]->cq)
1526                         dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size,
1527                                           gl[i]->cq, gl[i]->cq_dma);
1528                 if (gl[i]->cq_pbl)
1529                         dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size,
1530                                           gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
1531
1532                 kfree(gl[i]);
1533         }
1534         qedi_free_bdq(qedi);
1535         qedi_free_nvm_iscsi_cfg(qedi);
1536 }
1537
1538 static int qedi_alloc_bdq(struct qedi_ctx *qedi)
1539 {
1540         int i;
1541         struct scsi_bd *pbl;
1542         u64 *list;
1543         dma_addr_t page;
1544
1545         /* Alloc dma memory for BDQ buffers */
1546         for (i = 0; i < QEDI_BDQ_NUM; i++) {
1547                 qedi->bdq[i].buf_addr =
1548                                 dma_alloc_coherent(&qedi->pdev->dev,
1549                                                    QEDI_BDQ_BUF_SIZE,
1550                                                    &qedi->bdq[i].buf_dma,
1551                                                    GFP_KERNEL);
1552                 if (!qedi->bdq[i].buf_addr) {
1553                         QEDI_ERR(&qedi->dbg_ctx,
1554                                  "Could not allocate BDQ buffer %d.\n", i);
1555                         return -ENOMEM;
1556                 }
1557         }
1558
1559         /* Alloc dma memory for BDQ page buffer list */
1560         qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd);
1561         qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, QEDI_PAGE_SIZE);
1562         qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd);
1563
1564         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n",
1565                   qedi->rq_num_entries);
1566
1567         qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
1568                                            qedi->bdq_pbl_mem_size,
1569                                            &qedi->bdq_pbl_dma, GFP_KERNEL);
1570         if (!qedi->bdq_pbl) {
1571                 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n");
1572                 return -ENOMEM;
1573         }
1574
1575         /*
1576          * Populate BDQ PBL with physical and virtual address of individual
1577          * BDQ buffers
1578          */
1579         pbl = (struct scsi_bd  *)qedi->bdq_pbl;
1580         for (i = 0; i < QEDI_BDQ_NUM; i++) {
1581                 pbl->address.hi =
1582                                 cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma));
1583                 pbl->address.lo =
1584                                 cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma));
1585                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1586                           "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n",
1587                           pbl, pbl->address.hi, pbl->address.lo, i);
1588                 pbl->opaque.iscsi_opaque.reserved_zero[0] = 0;
1589                 pbl->opaque.iscsi_opaque.reserved_zero[1] = 0;
1590                 pbl->opaque.iscsi_opaque.reserved_zero[2] = 0;
1591                 pbl->opaque.iscsi_opaque.opaque = cpu_to_le16(i);
1592                 pbl++;
1593         }
1594
1595         /* Allocate list of PBL pages */
1596         qedi->bdq_pbl_list = dma_alloc_coherent(&qedi->pdev->dev,
1597                                                 QEDI_PAGE_SIZE,
1598                                                 &qedi->bdq_pbl_list_dma,
1599                                                 GFP_KERNEL);
1600         if (!qedi->bdq_pbl_list) {
1601                 QEDI_ERR(&qedi->dbg_ctx,
1602                          "Could not allocate list of PBL pages.\n");
1603                 return -ENOMEM;
1604         }
1605
1606         /*
1607          * Now populate PBL list with pages that contain pointers to the
1608          * individual buffers.
1609          */
1610         qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size /
1611                                          QEDI_PAGE_SIZE;
1612         list = (u64 *)qedi->bdq_pbl_list;
1613         page = qedi->bdq_pbl_list_dma;
1614         for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) {
1615                 *list = qedi->bdq_pbl_dma;
1616                 list++;
1617                 page += QEDI_PAGE_SIZE;
1618         }
1619
1620         return 0;
1621 }
1622
1623 static int qedi_alloc_global_queues(struct qedi_ctx *qedi)
1624 {
1625         u32 *list;
1626         int i;
1627         int status;
1628         u32 *pbl;
1629         dma_addr_t page;
1630         int num_pages;
1631
1632         /*
1633          * Number of global queues (CQ / RQ). This should
1634          * be <= number of available MSIX vectors for the PF
1635          */
1636         if (!qedi->num_queues) {
1637                 QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n");
1638                 return -ENOMEM;
1639         }
1640
1641         /* Make sure we allocated the PBL that will contain the physical
1642          * addresses of our queues
1643          */
1644         if (!qedi->p_cpuq) {
1645                 status = -EINVAL;
1646                 goto mem_alloc_failure;
1647         }
1648
1649         qedi->global_queues = kzalloc((sizeof(struct global_queue *) *
1650                                        qedi->num_queues), GFP_KERNEL);
1651         if (!qedi->global_queues) {
1652                 QEDI_ERR(&qedi->dbg_ctx,
1653                          "Unable to allocate global queues array ptr memory\n");
1654                 return -ENOMEM;
1655         }
1656         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1657                   "qedi->global_queues=%p.\n", qedi->global_queues);
1658
1659         /* Allocate DMA coherent buffers for BDQ */
1660         status = qedi_alloc_bdq(qedi);
1661         if (status)
1662                 goto mem_alloc_failure;
1663
1664         /* Allocate DMA coherent buffers for NVM_ISCSI_CFG */
1665         status = qedi_alloc_nvm_iscsi_cfg(qedi);
1666         if (status)
1667                 goto mem_alloc_failure;
1668
1669         /* Allocate a CQ and an associated PBL for each MSI-X
1670          * vector.
1671          */
1672         for (i = 0; i < qedi->num_queues; i++) {
1673                 qedi->global_queues[i] =
1674                                         kzalloc(sizeof(*qedi->global_queues[0]),
1675                                                 GFP_KERNEL);
1676                 if (!qedi->global_queues[i]) {
1677                         QEDI_ERR(&qedi->dbg_ctx,
1678                                  "Unable to allocation global queue %d.\n", i);
1679                         status = -ENOMEM;
1680                         goto mem_alloc_failure;
1681                 }
1682
1683                 qedi->global_queues[i]->cq_mem_size =
1684                     (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe);
1685                 qedi->global_queues[i]->cq_mem_size =
1686                     (qedi->global_queues[i]->cq_mem_size +
1687                     (QEDI_PAGE_SIZE - 1));
1688
1689                 qedi->global_queues[i]->cq_pbl_size =
1690                     (qedi->global_queues[i]->cq_mem_size /
1691                     QEDI_PAGE_SIZE) * sizeof(void *);
1692                 qedi->global_queues[i]->cq_pbl_size =
1693                     (qedi->global_queues[i]->cq_pbl_size +
1694                     (QEDI_PAGE_SIZE - 1));
1695
1696                 qedi->global_queues[i]->cq = dma_alloc_coherent(&qedi->pdev->dev,
1697                                                                 qedi->global_queues[i]->cq_mem_size,
1698                                                                 &qedi->global_queues[i]->cq_dma,
1699                                                                 GFP_KERNEL);
1700
1701                 if (!qedi->global_queues[i]->cq) {
1702                         QEDI_WARN(&qedi->dbg_ctx,
1703                                   "Could not allocate cq.\n");
1704                         status = -ENOMEM;
1705                         goto mem_alloc_failure;
1706                 }
1707                 qedi->global_queues[i]->cq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
1708                                                                     qedi->global_queues[i]->cq_pbl_size,
1709                                                                     &qedi->global_queues[i]->cq_pbl_dma,
1710                                                                     GFP_KERNEL);
1711
1712                 if (!qedi->global_queues[i]->cq_pbl) {
1713                         QEDI_WARN(&qedi->dbg_ctx,
1714                                   "Could not allocate cq PBL.\n");
1715                         status = -ENOMEM;
1716                         goto mem_alloc_failure;
1717                 }
1718
1719                 /* Create PBL */
1720                 num_pages = qedi->global_queues[i]->cq_mem_size /
1721                     QEDI_PAGE_SIZE;
1722                 page = qedi->global_queues[i]->cq_dma;
1723                 pbl = (u32 *)qedi->global_queues[i]->cq_pbl;
1724
1725                 while (num_pages--) {
1726                         *pbl = (u32)page;
1727                         pbl++;
1728                         *pbl = (u32)((u64)page >> 32);
1729                         pbl++;
1730                         page += QEDI_PAGE_SIZE;
1731                 }
1732         }
1733
1734         list = (u32 *)qedi->p_cpuq;
1735
1736         /*
1737          * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
1738          * CQ#1 PBL pointer, RQ#1 PBL pointer, etc.  Each PBL pointer points
1739          * to the physical address which contains an array of pointers to the
1740          * physical addresses of the specific queue pages.
1741          */
1742         for (i = 0; i < qedi->num_queues; i++) {
1743                 *list = (u32)qedi->global_queues[i]->cq_pbl_dma;
1744                 list++;
1745                 *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32);
1746                 list++;
1747
1748                 *list = (u32)0;
1749                 list++;
1750                 *list = (u32)((u64)0 >> 32);
1751                 list++;
1752         }
1753
1754         return 0;
1755
1756 mem_alloc_failure:
1757         qedi_free_global_queues(qedi);
1758         return status;
1759 }
1760
1761 int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1762 {
1763         int rval = 0;
1764         u32 *pbl;
1765         dma_addr_t page;
1766         int num_pages;
1767
1768         if (!ep)
1769                 return -EIO;
1770
1771         /* Calculate appropriate queue and PBL sizes */
1772         ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe);
1773         ep->sq_mem_size += QEDI_PAGE_SIZE - 1;
1774
1775         ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *);
1776         ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE;
1777
1778         ep->sq = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_mem_size,
1779                                     &ep->sq_dma, GFP_KERNEL);
1780         if (!ep->sq) {
1781                 QEDI_WARN(&qedi->dbg_ctx,
1782                           "Could not allocate send queue.\n");
1783                 rval = -ENOMEM;
1784                 goto out;
1785         }
1786         ep->sq_pbl = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size,
1787                                         &ep->sq_pbl_dma, GFP_KERNEL);
1788         if (!ep->sq_pbl) {
1789                 QEDI_WARN(&qedi->dbg_ctx,
1790                           "Could not allocate send queue PBL.\n");
1791                 rval = -ENOMEM;
1792                 goto out_free_sq;
1793         }
1794
1795         /* Create PBL */
1796         num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE;
1797         page = ep->sq_dma;
1798         pbl = (u32 *)ep->sq_pbl;
1799
1800         while (num_pages--) {
1801                 *pbl = (u32)page;
1802                 pbl++;
1803                 *pbl = (u32)((u64)page >> 32);
1804                 pbl++;
1805                 page += QEDI_PAGE_SIZE;
1806         }
1807
1808         return rval;
1809
1810 out_free_sq:
1811         dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1812                           ep->sq_dma);
1813 out:
1814         return rval;
1815 }
1816
1817 void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1818 {
1819         if (ep->sq_pbl)
1820                 dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl,
1821                                   ep->sq_pbl_dma);
1822         if (ep->sq)
1823                 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1824                                   ep->sq_dma);
1825 }
1826
1827 int qedi_get_task_idx(struct qedi_ctx *qedi)
1828 {
1829         s16 tmp_idx;
1830
1831 again:
1832         tmp_idx = find_first_zero_bit(qedi->task_idx_map,
1833                                       MAX_ISCSI_TASK_ENTRIES);
1834
1835         if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) {
1836                 QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n");
1837                 tmp_idx = -1;
1838                 goto err_idx;
1839         }
1840
1841         if (test_and_set_bit(tmp_idx, qedi->task_idx_map))
1842                 goto again;
1843
1844 err_idx:
1845         return tmp_idx;
1846 }
1847
1848 void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx)
1849 {
1850         if (!test_and_clear_bit(idx, qedi->task_idx_map))
1851                 QEDI_ERR(&qedi->dbg_ctx,
1852                          "FW task context, already cleared, tid=0x%x\n", idx);
1853 }
1854
1855 void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt,
1856                          struct qedi_cmd *cmd)
1857 {
1858         qedi->itt_map[tid].itt = proto_itt;
1859         qedi->itt_map[tid].p_cmd = cmd;
1860
1861         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1862                   "update itt map tid=0x%x, with proto itt=0x%x\n", tid,
1863                   qedi->itt_map[tid].itt);
1864 }
1865
1866 void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid)
1867 {
1868         u16 i;
1869
1870         for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) {
1871                 if (qedi->itt_map[i].itt == itt) {
1872                         *tid = i;
1873                         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1874                                   "Ref itt=0x%x, found at tid=0x%x\n",
1875                                   itt, *tid);
1876                         return;
1877                 }
1878         }
1879
1880         WARN_ON(1);
1881 }
1882
1883 void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt)
1884 {
1885         *proto_itt = qedi->itt_map[tid].itt;
1886         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1887                   "Get itt map tid [0x%x with proto itt[0x%x]",
1888                   tid, *proto_itt);
1889 }
1890
1891 struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid)
1892 {
1893         struct qedi_cmd *cmd = NULL;
1894
1895         if (tid >= MAX_ISCSI_TASK_ENTRIES)
1896                 return NULL;
1897
1898         cmd = qedi->itt_map[tid].p_cmd;
1899         if (cmd->task_id != tid)
1900                 return NULL;
1901
1902         qedi->itt_map[tid].p_cmd = NULL;
1903
1904         return cmd;
1905 }
1906
1907 static int qedi_alloc_itt(struct qedi_ctx *qedi)
1908 {
1909         qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES,
1910                                 sizeof(struct qedi_itt_map), GFP_KERNEL);
1911         if (!qedi->itt_map) {
1912                 QEDI_ERR(&qedi->dbg_ctx,
1913                          "Unable to allocate itt map array memory\n");
1914                 return -ENOMEM;
1915         }
1916         return 0;
1917 }
1918
1919 static void qedi_free_itt(struct qedi_ctx *qedi)
1920 {
1921         kfree(qedi->itt_map);
1922 }
1923
1924 static struct qed_ll2_cb_ops qedi_ll2_cb_ops = {
1925         .rx_cb = qedi_ll2_rx,
1926         .tx_cb = NULL,
1927 };
1928
1929 static int qedi_percpu_io_thread(void *arg)
1930 {
1931         struct qedi_percpu_s *p = arg;
1932         struct qedi_work *work, *tmp;
1933         unsigned long flags;
1934         LIST_HEAD(work_list);
1935
1936         set_user_nice(current, -20);
1937
1938         while (!kthread_should_stop()) {
1939                 spin_lock_irqsave(&p->p_work_lock, flags);
1940                 while (!list_empty(&p->work_list)) {
1941                         list_splice_init(&p->work_list, &work_list);
1942                         spin_unlock_irqrestore(&p->p_work_lock, flags);
1943
1944                         list_for_each_entry_safe(work, tmp, &work_list, list) {
1945                                 list_del_init(&work->list);
1946                                 qedi_fp_process_cqes(work);
1947                                 if (!work->is_solicited)
1948                                         kfree(work);
1949                         }
1950                         cond_resched();
1951                         spin_lock_irqsave(&p->p_work_lock, flags);
1952                 }
1953                 set_current_state(TASK_INTERRUPTIBLE);
1954                 spin_unlock_irqrestore(&p->p_work_lock, flags);
1955                 schedule();
1956         }
1957         __set_current_state(TASK_RUNNING);
1958
1959         return 0;
1960 }
1961
1962 static int qedi_cpu_online(unsigned int cpu)
1963 {
1964         struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
1965         struct task_struct *thread;
1966
1967         thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p,
1968                                         cpu_to_node(cpu),
1969                                         "qedi_thread/%d", cpu);
1970         if (IS_ERR(thread))
1971                 return PTR_ERR(thread);
1972
1973         kthread_bind(thread, cpu);
1974         p->iothread = thread;
1975         wake_up_process(thread);
1976         return 0;
1977 }
1978
1979 static int qedi_cpu_offline(unsigned int cpu)
1980 {
1981         struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
1982         struct qedi_work *work, *tmp;
1983         struct task_struct *thread;
1984         unsigned long flags;
1985
1986         spin_lock_irqsave(&p->p_work_lock, flags);
1987         thread = p->iothread;
1988         p->iothread = NULL;
1989
1990         list_for_each_entry_safe(work, tmp, &p->work_list, list) {
1991                 list_del_init(&work->list);
1992                 qedi_fp_process_cqes(work);
1993                 if (!work->is_solicited)
1994                         kfree(work);
1995         }
1996
1997         spin_unlock_irqrestore(&p->p_work_lock, flags);
1998         if (thread)
1999                 kthread_stop(thread);
2000         return 0;
2001 }
2002
2003 void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu)
2004 {
2005         struct qed_ll2_params params;
2006
2007         qedi_recover_all_conns(qedi);
2008
2009         qedi_ops->ll2->stop(qedi->cdev);
2010         qedi_ll2_free_skbs(qedi);
2011
2012         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n",
2013                   qedi->ll2_mtu, mtu);
2014         memset(&params, 0, sizeof(params));
2015         qedi->ll2_mtu = mtu;
2016         params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN;
2017         params.drop_ttl0_packets = 0;
2018         params.rx_vlan_stripping = 1;
2019         ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
2020         qedi_ops->ll2->start(qedi->cdev, &params);
2021 }
2022
2023 /*
2024  * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting
2025  * for gaps) for the matching absolute-pf-id of the QEDI device.
2026  */
2027 static struct nvm_iscsi_block *
2028 qedi_get_nvram_block(struct qedi_ctx *qedi)
2029 {
2030         int i;
2031         u8 pf;
2032         u32 flags;
2033         struct nvm_iscsi_block *block;
2034
2035         pf = qedi->dev_info.common.abs_pf_id;
2036         block = &qedi->iscsi_image->iscsi_cfg.block[0];
2037         for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) {
2038                 flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >>
2039                         NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET;
2040                 if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY |
2041                                 NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) &&
2042                         (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK)
2043                                 >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET))
2044                         return block;
2045         }
2046         return NULL;
2047 }
2048
2049 static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf)
2050 {
2051         struct qedi_ctx *qedi = data;
2052         struct nvm_iscsi_initiator *initiator;
2053         int rc = 1;
2054         u32 ipv6_en, dhcp_en, ip_len;
2055         struct nvm_iscsi_block *block;
2056         char *fmt, *ip, *sub, *gw;
2057
2058         block = qedi_get_nvram_block(qedi);
2059         if (!block)
2060                 return 0;
2061
2062         initiator = &block->initiator;
2063         ipv6_en = block->generic.ctrl_flags &
2064                   NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
2065         dhcp_en = block->generic.ctrl_flags &
2066                   NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED;
2067         /* Static IP assignments. */
2068         fmt = ipv6_en ? "%pI6\n" : "%pI4\n";
2069         ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte;
2070         ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
2071         sub = ipv6_en ? initiator->ipv6.subnet_mask.byte :
2072               initiator->ipv4.subnet_mask.byte;
2073         gw = ipv6_en ? initiator->ipv6.gateway.byte :
2074              initiator->ipv4.gateway.byte;
2075         /* DHCP IP adjustments. */
2076         fmt = dhcp_en ? "%s\n" : fmt;
2077         if (dhcp_en) {
2078                 ip = ipv6_en ? "0::0" : "0.0.0.0";
2079                 sub = ip;
2080                 gw = ip;
2081                 ip_len = ipv6_en ? 5 : 8;
2082         }
2083
2084         switch (type) {
2085         case ISCSI_BOOT_ETH_IP_ADDR:
2086                 rc = snprintf(buf, ip_len, fmt, ip);
2087                 break;
2088         case ISCSI_BOOT_ETH_SUBNET_MASK:
2089                 rc = snprintf(buf, ip_len, fmt, sub);
2090                 break;
2091         case ISCSI_BOOT_ETH_GATEWAY:
2092                 rc = snprintf(buf, ip_len, fmt, gw);
2093                 break;
2094         case ISCSI_BOOT_ETH_FLAGS:
2095                 rc = snprintf(buf, 3, "%hhd\n",
2096                               SYSFS_FLAG_FW_SEL_BOOT);
2097                 break;
2098         case ISCSI_BOOT_ETH_INDEX:
2099                 rc = snprintf(buf, 3, "0\n");
2100                 break;
2101         case ISCSI_BOOT_ETH_MAC:
2102                 rc = sysfs_format_mac(buf, qedi->mac, ETH_ALEN);
2103                 break;
2104         case ISCSI_BOOT_ETH_VLAN:
2105                 rc = snprintf(buf, 12, "%d\n",
2106                               GET_FIELD2(initiator->generic_cont0,
2107                                          NVM_ISCSI_CFG_INITIATOR_VLAN));
2108                 break;
2109         case ISCSI_BOOT_ETH_ORIGIN:
2110                 if (dhcp_en)
2111                         rc = snprintf(buf, 3, "3\n");
2112                 break;
2113         default:
2114                 rc = 0;
2115                 break;
2116         }
2117
2118         return rc;
2119 }
2120
2121 static umode_t qedi_eth_get_attr_visibility(void *data, int type)
2122 {
2123         int rc = 1;
2124
2125         switch (type) {
2126         case ISCSI_BOOT_ETH_FLAGS:
2127         case ISCSI_BOOT_ETH_MAC:
2128         case ISCSI_BOOT_ETH_INDEX:
2129         case ISCSI_BOOT_ETH_IP_ADDR:
2130         case ISCSI_BOOT_ETH_SUBNET_MASK:
2131         case ISCSI_BOOT_ETH_GATEWAY:
2132         case ISCSI_BOOT_ETH_ORIGIN:
2133         case ISCSI_BOOT_ETH_VLAN:
2134                 rc = 0444;
2135                 break;
2136         default:
2137                 rc = 0;
2138                 break;
2139         }
2140         return rc;
2141 }
2142
2143 static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf)
2144 {
2145         struct qedi_ctx *qedi = data;
2146         struct nvm_iscsi_initiator *initiator;
2147         int rc;
2148         struct nvm_iscsi_block *block;
2149
2150         block = qedi_get_nvram_block(qedi);
2151         if (!block)
2152                 return 0;
2153
2154         initiator = &block->initiator;
2155
2156         switch (type) {
2157         case ISCSI_BOOT_INI_INITIATOR_NAME:
2158                 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
2159                              initiator->initiator_name.byte);
2160                 break;
2161         default:
2162                 rc = 0;
2163                 break;
2164         }
2165         return rc;
2166 }
2167
2168 static umode_t qedi_ini_get_attr_visibility(void *data, int type)
2169 {
2170         int rc;
2171
2172         switch (type) {
2173         case ISCSI_BOOT_INI_INITIATOR_NAME:
2174                 rc = 0444;
2175                 break;
2176         default:
2177                 rc = 0;
2178                 break;
2179         }
2180         return rc;
2181 }
2182
2183 static ssize_t
2184 qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type,
2185                         char *buf, enum qedi_nvm_tgts idx)
2186 {
2187         int rc = 1;
2188         u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len;
2189         struct nvm_iscsi_block *block;
2190         char *chap_name, *chap_secret;
2191         char *mchap_name, *mchap_secret;
2192
2193         block = qedi_get_nvram_block(qedi);
2194         if (!block)
2195                 goto exit_show_tgt_info;
2196
2197         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
2198                   "Port:%d, tgt_idx:%d\n",
2199                   GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx);
2200
2201         ctrl_flags = block->target[idx].ctrl_flags &
2202                      NVM_ISCSI_CFG_TARGET_ENABLED;
2203
2204         if (!ctrl_flags) {
2205                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
2206                           "Target disabled\n");
2207                 goto exit_show_tgt_info;
2208         }
2209
2210         ipv6_en = block->generic.ctrl_flags &
2211                   NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
2212         ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
2213         chap_en = block->generic.ctrl_flags &
2214                   NVM_ISCSI_CFG_GEN_CHAP_ENABLED;
2215         chap_name = chap_en ? block->initiator.chap_name.byte : NULL;
2216         chap_secret = chap_en ? block->initiator.chap_password.byte : NULL;
2217
2218         mchap_en = block->generic.ctrl_flags &
2219                   NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED;
2220         mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL;
2221         mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL;
2222
2223         switch (type) {
2224         case ISCSI_BOOT_TGT_NAME:
2225                 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
2226                              block->target[idx].target_name.byte);
2227                 break;
2228         case ISCSI_BOOT_TGT_IP_ADDR:
2229                 if (ipv6_en)
2230                         rc = snprintf(buf, ip_len, "%pI6\n",
2231                                       block->target[idx].ipv6_addr.byte);
2232                 else
2233                         rc = snprintf(buf, ip_len, "%pI4\n",
2234                                       block->target[idx].ipv4_addr.byte);
2235                 break;
2236         case ISCSI_BOOT_TGT_PORT:
2237                 rc = snprintf(buf, 12, "%d\n",
2238                               GET_FIELD2(block->target[idx].generic_cont0,
2239                                          NVM_ISCSI_CFG_TARGET_TCP_PORT));
2240                 break;
2241         case ISCSI_BOOT_TGT_LUN:
2242                 rc = snprintf(buf, 22, "%.*d\n",
2243                               block->target[idx].lun.value[1],
2244                               block->target[idx].lun.value[0]);
2245                 break;
2246         case ISCSI_BOOT_TGT_CHAP_NAME:
2247                 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
2248                              chap_name);
2249                 break;
2250         case ISCSI_BOOT_TGT_CHAP_SECRET:
2251                 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN,
2252                              chap_secret);
2253                 break;
2254         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
2255                 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
2256                              mchap_name);
2257                 break;
2258         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
2259                 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN,
2260                              mchap_secret);
2261                 break;
2262         case ISCSI_BOOT_TGT_FLAGS:
2263                 rc = snprintf(buf, 3, "%hhd\n", SYSFS_FLAG_FW_SEL_BOOT);
2264                 break;
2265         case ISCSI_BOOT_TGT_NIC_ASSOC:
2266                 rc = snprintf(buf, 3, "0\n");
2267                 break;
2268         default:
2269                 rc = 0;
2270                 break;
2271         }
2272
2273 exit_show_tgt_info:
2274         return rc;
2275 }
2276
2277 static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf)
2278 {
2279         struct qedi_ctx *qedi = data;
2280
2281         return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI);
2282 }
2283
2284 static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf)
2285 {
2286         struct qedi_ctx *qedi = data;
2287
2288         return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC);
2289 }
2290
2291 static umode_t qedi_tgt_get_attr_visibility(void *data, int type)
2292 {
2293         int rc;
2294
2295         switch (type) {
2296         case ISCSI_BOOT_TGT_NAME:
2297         case ISCSI_BOOT_TGT_IP_ADDR:
2298         case ISCSI_BOOT_TGT_PORT:
2299         case ISCSI_BOOT_TGT_LUN:
2300         case ISCSI_BOOT_TGT_CHAP_NAME:
2301         case ISCSI_BOOT_TGT_CHAP_SECRET:
2302         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
2303         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
2304         case ISCSI_BOOT_TGT_NIC_ASSOC:
2305         case ISCSI_BOOT_TGT_FLAGS:
2306                 rc = 0444;
2307                 break;
2308         default:
2309                 rc = 0;
2310                 break;
2311         }
2312         return rc;
2313 }
2314
2315 static void qedi_boot_release(void *data)
2316 {
2317         struct qedi_ctx *qedi = data;
2318
2319         scsi_host_put(qedi->shost);
2320 }
2321
2322 static int qedi_get_boot_info(struct qedi_ctx *qedi)
2323 {
2324         int ret = 1;
2325
2326         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2327                   "Get NVM iSCSI CFG image\n");
2328         ret = qedi_ops->common->nvm_get_image(qedi->cdev,
2329                                               QED_NVM_IMAGE_ISCSI_CFG,
2330                                               (char *)qedi->iscsi_image,
2331                                               sizeof(struct qedi_nvm_iscsi_image));
2332         if (ret)
2333                 QEDI_ERR(&qedi->dbg_ctx,
2334                          "Could not get NVM image. ret = %d\n", ret);
2335
2336         return ret;
2337 }
2338
2339 static int qedi_setup_boot_info(struct qedi_ctx *qedi)
2340 {
2341         struct iscsi_boot_kobj *boot_kobj;
2342
2343         if (qedi_get_boot_info(qedi))
2344                 return -EPERM;
2345
2346         qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no);
2347         if (!qedi->boot_kset)
2348                 goto kset_free;
2349
2350         if (!scsi_host_get(qedi->shost))
2351                 goto kset_free;
2352
2353         boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi,
2354                                              qedi_show_boot_tgt_pri_info,
2355                                              qedi_tgt_get_attr_visibility,
2356                                              qedi_boot_release);
2357         if (!boot_kobj)
2358                 goto put_host;
2359
2360         if (!scsi_host_get(qedi->shost))
2361                 goto kset_free;
2362
2363         boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi,
2364                                              qedi_show_boot_tgt_sec_info,
2365                                              qedi_tgt_get_attr_visibility,
2366                                              qedi_boot_release);
2367         if (!boot_kobj)
2368                 goto put_host;
2369
2370         if (!scsi_host_get(qedi->shost))
2371                 goto kset_free;
2372
2373         boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi,
2374                                                 qedi_show_boot_ini_info,
2375                                                 qedi_ini_get_attr_visibility,
2376                                                 qedi_boot_release);
2377         if (!boot_kobj)
2378                 goto put_host;
2379
2380         if (!scsi_host_get(qedi->shost))
2381                 goto kset_free;
2382
2383         boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi,
2384                                                qedi_show_boot_eth_info,
2385                                                qedi_eth_get_attr_visibility,
2386                                                qedi_boot_release);
2387         if (!boot_kobj)
2388                 goto put_host;
2389
2390         return 0;
2391
2392 put_host:
2393         scsi_host_put(qedi->shost);
2394 kset_free:
2395         iscsi_boot_destroy_kset(qedi->boot_kset);
2396         return -ENOMEM;
2397 }
2398
2399 static pci_ers_result_t qedi_io_error_detected(struct pci_dev *pdev,
2400                                                pci_channel_state_t state)
2401 {
2402         struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2403
2404         QEDI_ERR(&qedi->dbg_ctx, "%s: PCI error detected [%d]\n",
2405                  __func__, state);
2406
2407         if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags)) {
2408                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2409                           "Recovery already in progress.\n");
2410                 return PCI_ERS_RESULT_NONE;
2411         }
2412
2413         qedi_ops->common->recovery_process(qedi->cdev);
2414
2415         return PCI_ERS_RESULT_CAN_RECOVER;
2416 }
2417
2418 static void __qedi_remove(struct pci_dev *pdev, int mode)
2419 {
2420         struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2421         int rval;
2422         u16 retry = 10;
2423
2424         if (mode == QEDI_MODE_SHUTDOWN)
2425                 iscsi_host_for_each_session(qedi->shost,
2426                                             qedi_clear_session_ctx);
2427
2428         if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) {
2429                 if (qedi->tmf_thread) {
2430                         flush_workqueue(qedi->tmf_thread);
2431                         destroy_workqueue(qedi->tmf_thread);
2432                         qedi->tmf_thread = NULL;
2433                 }
2434
2435                 if (qedi->offload_thread) {
2436                         flush_workqueue(qedi->offload_thread);
2437                         destroy_workqueue(qedi->offload_thread);
2438                         qedi->offload_thread = NULL;
2439                 }
2440         }
2441
2442 #ifdef CONFIG_DEBUG_FS
2443         qedi_dbg_host_exit(&qedi->dbg_ctx);
2444 #endif
2445         if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags))
2446                 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2447
2448         qedi_sync_free_irqs(qedi);
2449
2450         if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2451                 while (retry--) {
2452                         rval = qedi_ops->stop(qedi->cdev);
2453                         if (rval < 0)
2454                                 msleep(1000);
2455                         else
2456                                 break;
2457                 }
2458                 qedi_ops->ll2->stop(qedi->cdev);
2459         }
2460
2461         cancel_delayed_work_sync(&qedi->recovery_work);
2462         cancel_delayed_work_sync(&qedi->board_disable_work);
2463
2464         qedi_free_iscsi_pf_param(qedi);
2465
2466         rval = qedi_ops->common->update_drv_state(qedi->cdev, false);
2467         if (rval)
2468                 QEDI_ERR(&qedi->dbg_ctx, "Failed to send drv state to MFW\n");
2469
2470         if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2471                 qedi_ops->common->slowpath_stop(qedi->cdev);
2472                 qedi_ops->common->remove(qedi->cdev);
2473         }
2474
2475         qedi_destroy_fp(qedi);
2476
2477         if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) {
2478                 qedi_release_cid_que(qedi);
2479                 qedi_cm_free_mem(qedi);
2480                 qedi_free_uio(qedi->udev);
2481                 qedi_free_itt(qedi);
2482
2483                 if (qedi->ll2_recv_thread) {
2484                         kthread_stop(qedi->ll2_recv_thread);
2485                         qedi->ll2_recv_thread = NULL;
2486                 }
2487                 qedi_ll2_free_skbs(qedi);
2488
2489                 if (qedi->boot_kset)
2490                         iscsi_boot_destroy_kset(qedi->boot_kset);
2491
2492                 iscsi_host_remove(qedi->shost);
2493                 iscsi_host_free(qedi->shost);
2494         }
2495 }
2496
2497 static void qedi_board_disable_work(struct work_struct *work)
2498 {
2499         struct qedi_ctx *qedi =
2500                         container_of(work, struct qedi_ctx,
2501                                      board_disable_work.work);
2502
2503         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2504                   "Fan failure, Unloading firmware context.\n");
2505
2506         if (test_and_set_bit(QEDI_IN_SHUTDOWN, &qedi->flags))
2507                 return;
2508
2509         __qedi_remove(qedi->pdev, QEDI_MODE_SHUTDOWN);
2510 }
2511
2512 static void qedi_shutdown(struct pci_dev *pdev)
2513 {
2514         struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2515
2516         QEDI_ERR(&qedi->dbg_ctx, "%s: Shutdown qedi\n", __func__);
2517         if (test_and_set_bit(QEDI_IN_SHUTDOWN, &qedi->flags))
2518                 return;
2519         __qedi_remove(pdev, QEDI_MODE_SHUTDOWN);
2520 }
2521
2522 static int qedi_suspend(struct pci_dev *pdev, pm_message_t state)
2523 {
2524         struct qedi_ctx *qedi;
2525
2526         if (!pdev) {
2527                 QEDI_ERR(NULL, "pdev is NULL.\n");
2528                 return -ENODEV;
2529         }
2530
2531         qedi = pci_get_drvdata(pdev);
2532
2533         QEDI_ERR(&qedi->dbg_ctx, "%s: Device does not support suspend operation\n", __func__);
2534
2535         return -EPERM;
2536 }
2537
2538 static int __qedi_probe(struct pci_dev *pdev, int mode)
2539 {
2540         struct qedi_ctx *qedi;
2541         struct qed_ll2_params params;
2542         u8 dp_level = 0;
2543         bool is_vf = false;
2544         char host_buf[16];
2545         struct qed_link_params link_params;
2546         struct qed_slowpath_params sp_params;
2547         struct qed_probe_params qed_params;
2548         void *task_start, *task_end;
2549         int rc;
2550         u16 retry = 10;
2551
2552         if (mode != QEDI_MODE_RECOVERY) {
2553                 qedi = qedi_host_alloc(pdev);
2554                 if (!qedi) {
2555                         rc = -ENOMEM;
2556                         goto exit_probe;
2557                 }
2558         } else {
2559                 qedi = pci_get_drvdata(pdev);
2560         }
2561
2562 retry_probe:
2563         if (mode == QEDI_MODE_RECOVERY)
2564                 msleep(2000);
2565
2566         memset(&qed_params, 0, sizeof(qed_params));
2567         qed_params.protocol = QED_PROTOCOL_ISCSI;
2568         qed_params.dp_module = qedi_qed_debug;
2569         qed_params.dp_level = dp_level;
2570         qed_params.is_vf = is_vf;
2571         qedi->cdev = qedi_ops->common->probe(pdev, &qed_params);
2572         if (!qedi->cdev) {
2573                 if (mode == QEDI_MODE_RECOVERY && retry) {
2574                         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2575                                   "Retry %d initialize hardware\n", retry);
2576                         retry--;
2577                         goto retry_probe;
2578                 }
2579
2580                 rc = -ENODEV;
2581                 QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n");
2582                 goto free_host;
2583         }
2584
2585         set_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags);
2586         set_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags);
2587         atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2588
2589         rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2590         if (rc)
2591                 goto free_host;
2592
2593         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2594                   "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
2595                   qedi->dev_info.common.num_hwfns,
2596                   qedi_ops->common->get_affin_hwfn_idx(qedi->cdev));
2597
2598         rc = qedi_set_iscsi_pf_param(qedi);
2599         if (rc) {
2600                 rc = -ENOMEM;
2601                 QEDI_ERR(&qedi->dbg_ctx,
2602                          "Set iSCSI pf param fail\n");
2603                 goto free_host;
2604         }
2605
2606         qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2607
2608         rc = qedi_prepare_fp(qedi);
2609         if (rc) {
2610                 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n");
2611                 goto free_pf_params;
2612         }
2613
2614         /* Start the Slowpath-process */
2615         memset(&sp_params, 0, sizeof(struct qed_slowpath_params));
2616         sp_params.int_mode = QED_INT_MODE_MSIX;
2617         sp_params.drv_major = QEDI_DRIVER_MAJOR_VER;
2618         sp_params.drv_minor = QEDI_DRIVER_MINOR_VER;
2619         sp_params.drv_rev = QEDI_DRIVER_REV_VER;
2620         sp_params.drv_eng = QEDI_DRIVER_ENG_VER;
2621         strlcpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE);
2622         rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params);
2623         if (rc) {
2624                 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n");
2625                 goto stop_hw;
2626         }
2627
2628         /* update_pf_params needs to be called before and after slowpath
2629          * start
2630          */
2631         qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2632
2633         rc = qedi_setup_int(qedi);
2634         if (rc)
2635                 goto stop_iscsi_func;
2636
2637         qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2638
2639         /* Learn information crucial for qedi to progress */
2640         rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2641         if (rc)
2642                 goto stop_iscsi_func;
2643
2644         /* Record BDQ producer doorbell addresses */
2645         qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr;
2646         qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr;
2647         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2648                   "BDQ primary_prod=%p secondary_prod=%p.\n",
2649                   qedi->bdq_primary_prod,
2650                   qedi->bdq_secondary_prod);
2651
2652         /*
2653          * We need to write the number of BDs in the BDQ we've preallocated so
2654          * the f/w will do a prefetch and we'll get an unsolicited CQE when a
2655          * packet arrives.
2656          */
2657         qedi->bdq_prod_idx = QEDI_BDQ_NUM;
2658         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2659                   "Writing %d to primary and secondary BDQ doorbell registers.\n",
2660                   qedi->bdq_prod_idx);
2661         writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod);
2662         readw(qedi->bdq_primary_prod);
2663         writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod);
2664         readw(qedi->bdq_secondary_prod);
2665
2666         ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac);
2667         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n",
2668                   qedi->mac);
2669
2670         snprintf(host_buf, sizeof(host_buf), "host_%d", qedi->shost->host_no);
2671         qedi_ops->common->set_name(qedi->cdev, host_buf);
2672
2673         qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi);
2674
2675         memset(&params, 0, sizeof(params));
2676         params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN;
2677         qedi->ll2_mtu = DEF_PATH_MTU;
2678         params.drop_ttl0_packets = 0;
2679         params.rx_vlan_stripping = 1;
2680         ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
2681
2682         if (mode != QEDI_MODE_RECOVERY) {
2683                 /* set up rx path */
2684                 INIT_LIST_HEAD(&qedi->ll2_skb_list);
2685                 spin_lock_init(&qedi->ll2_lock);
2686                 /* start qedi context */
2687                 spin_lock_init(&qedi->hba_lock);
2688                 spin_lock_init(&qedi->task_idx_lock);
2689                 mutex_init(&qedi->stats_lock);
2690         }
2691         qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi);
2692         qedi_ops->ll2->start(qedi->cdev, &params);
2693
2694         if (mode != QEDI_MODE_RECOVERY) {
2695                 qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread,
2696                                                     (void *)qedi,
2697                                                     "qedi_ll2_thread");
2698         }
2699
2700         rc = qedi_ops->start(qedi->cdev, &qedi->tasks,
2701                              qedi, qedi_iscsi_event_cb);
2702         if (rc) {
2703                 rc = -ENODEV;
2704                 QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n");
2705                 goto stop_slowpath;
2706         }
2707
2708         task_start = qedi_get_task_mem(&qedi->tasks, 0);
2709         task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1);
2710         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2711                   "Task context start=%p, end=%p block_size=%u.\n",
2712                    task_start, task_end, qedi->tasks.size);
2713
2714         memset(&link_params, 0, sizeof(link_params));
2715         link_params.link_up = true;
2716         rc = qedi_ops->common->set_link(qedi->cdev, &link_params);
2717         if (rc) {
2718                 QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n");
2719                 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2720         }
2721
2722 #ifdef CONFIG_DEBUG_FS
2723         qedi_dbg_host_init(&qedi->dbg_ctx, qedi_debugfs_ops,
2724                            qedi_dbg_fops);
2725 #endif
2726         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2727                   "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n",
2728                   QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION,
2729                   FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
2730
2731         if (mode == QEDI_MODE_NORMAL) {
2732                 if (iscsi_host_add(qedi->shost, &pdev->dev)) {
2733                         QEDI_ERR(&qedi->dbg_ctx,
2734                                  "Could not add iscsi host\n");
2735                         rc = -ENOMEM;
2736                         goto remove_host;
2737                 }
2738
2739                 /* Allocate uio buffers */
2740                 rc = qedi_alloc_uio_rings(qedi);
2741                 if (rc) {
2742                         QEDI_ERR(&qedi->dbg_ctx,
2743                                  "UIO alloc ring failed err=%d\n", rc);
2744                         goto remove_host;
2745                 }
2746
2747                 rc = qedi_init_uio(qedi);
2748                 if (rc) {
2749                         QEDI_ERR(&qedi->dbg_ctx,
2750                                  "UIO init failed, err=%d\n", rc);
2751                         goto free_uio;
2752                 }
2753
2754                 /* host the array on iscsi_conn */
2755                 rc = qedi_setup_cid_que(qedi);
2756                 if (rc) {
2757                         QEDI_ERR(&qedi->dbg_ctx,
2758                                  "Could not setup cid que\n");
2759                         goto free_uio;
2760                 }
2761
2762                 rc = qedi_cm_alloc_mem(qedi);
2763                 if (rc) {
2764                         QEDI_ERR(&qedi->dbg_ctx,
2765                                  "Could not alloc cm memory\n");
2766                         goto free_cid_que;
2767                 }
2768
2769                 rc = qedi_alloc_itt(qedi);
2770                 if (rc) {
2771                         QEDI_ERR(&qedi->dbg_ctx,
2772                                  "Could not alloc itt memory\n");
2773                         goto free_cid_que;
2774                 }
2775
2776                 sprintf(host_buf, "host_%d", qedi->shost->host_no);
2777                 qedi->tmf_thread = create_singlethread_workqueue(host_buf);
2778                 if (!qedi->tmf_thread) {
2779                         QEDI_ERR(&qedi->dbg_ctx,
2780                                  "Unable to start tmf thread!\n");
2781                         rc = -ENODEV;
2782                         goto free_cid_que;
2783                 }
2784
2785                 sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no);
2786                 qedi->offload_thread = create_workqueue(host_buf);
2787                 if (!qedi->offload_thread) {
2788                         QEDI_ERR(&qedi->dbg_ctx,
2789                                  "Unable to start offload thread!\n");
2790                         rc = -ENODEV;
2791                         goto free_tmf_thread;
2792                 }
2793
2794                 INIT_DELAYED_WORK(&qedi->recovery_work, qedi_recovery_handler);
2795                 INIT_DELAYED_WORK(&qedi->board_disable_work,
2796                                   qedi_board_disable_work);
2797
2798                 /* F/w needs 1st task context memory entry for performance */
2799                 set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map);
2800                 atomic_set(&qedi->num_offloads, 0);
2801
2802                 if (qedi_setup_boot_info(qedi))
2803                         QEDI_ERR(&qedi->dbg_ctx,
2804                                  "No iSCSI boot target configured\n");
2805
2806                 rc = qedi_ops->common->update_drv_state(qedi->cdev, true);
2807                 if (rc)
2808                         QEDI_ERR(&qedi->dbg_ctx,
2809                                  "Failed to send drv state to MFW\n");
2810
2811         }
2812
2813         return 0;
2814
2815 free_tmf_thread:
2816         destroy_workqueue(qedi->tmf_thread);
2817 free_cid_que:
2818         qedi_release_cid_que(qedi);
2819 free_uio:
2820         qedi_free_uio(qedi->udev);
2821 remove_host:
2822 #ifdef CONFIG_DEBUG_FS
2823         qedi_dbg_host_exit(&qedi->dbg_ctx);
2824 #endif
2825         iscsi_host_remove(qedi->shost);
2826 stop_iscsi_func:
2827         qedi_ops->stop(qedi->cdev);
2828 stop_slowpath:
2829         qedi_ops->common->slowpath_stop(qedi->cdev);
2830 stop_hw:
2831         qedi_ops->common->remove(qedi->cdev);
2832 free_pf_params:
2833         qedi_free_iscsi_pf_param(qedi);
2834 free_host:
2835         iscsi_host_free(qedi->shost);
2836 exit_probe:
2837         return rc;
2838 }
2839
2840 static void qedi_mark_conn_recovery(struct iscsi_cls_session *cls_session)
2841 {
2842         struct iscsi_session *session = cls_session->dd_data;
2843         struct iscsi_conn *conn = session->leadconn;
2844         struct qedi_conn *qedi_conn = conn->dd_data;
2845
2846         iscsi_conn_failure(qedi_conn->cls_conn->dd_data, ISCSI_ERR_CONN_FAILED);
2847 }
2848
2849 static void qedi_recovery_handler(struct work_struct *work)
2850 {
2851         struct qedi_ctx *qedi =
2852                         container_of(work, struct qedi_ctx, recovery_work.work);
2853
2854         iscsi_host_for_each_session(qedi->shost, qedi_mark_conn_recovery);
2855
2856         /* Call common_ops->recovery_prolog to allow the MFW to quiesce
2857          * any PCI transactions.
2858          */
2859         qedi_ops->common->recovery_prolog(qedi->cdev);
2860
2861         __qedi_remove(qedi->pdev, QEDI_MODE_RECOVERY);
2862         __qedi_probe(qedi->pdev, QEDI_MODE_RECOVERY);
2863         clear_bit(QEDI_IN_RECOVERY, &qedi->flags);
2864 }
2865
2866 static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2867 {
2868         return __qedi_probe(pdev, QEDI_MODE_NORMAL);
2869 }
2870
2871 static void qedi_remove(struct pci_dev *pdev)
2872 {
2873         __qedi_remove(pdev, QEDI_MODE_NORMAL);
2874 }
2875
2876 static struct pci_device_id qedi_pci_tbl[] = {
2877         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) },
2878         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) },
2879         { 0 },
2880 };
2881 MODULE_DEVICE_TABLE(pci, qedi_pci_tbl);
2882
2883 static enum cpuhp_state qedi_cpuhp_state;
2884
2885 static struct pci_error_handlers qedi_err_handler = {
2886         .error_detected = qedi_io_error_detected,
2887 };
2888
2889 static struct pci_driver qedi_pci_driver = {
2890         .name = QEDI_MODULE_NAME,
2891         .id_table = qedi_pci_tbl,
2892         .probe = qedi_probe,
2893         .remove = qedi_remove,
2894         .shutdown = qedi_shutdown,
2895         .err_handler = &qedi_err_handler,
2896         .suspend = qedi_suspend,
2897 };
2898
2899 static int __init qedi_init(void)
2900 {
2901         struct qedi_percpu_s *p;
2902         int cpu, rc = 0;
2903
2904         qedi_ops = qed_get_iscsi_ops();
2905         if (!qedi_ops) {
2906                 QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n");
2907                 return -EINVAL;
2908         }
2909
2910 #ifdef CONFIG_DEBUG_FS
2911         qedi_dbg_init("qedi");
2912 #endif
2913
2914         qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport);
2915         if (!qedi_scsi_transport) {
2916                 QEDI_ERR(NULL, "Could not register qedi transport");
2917                 rc = -ENOMEM;
2918                 goto exit_qedi_init_1;
2919         }
2920
2921         for_each_possible_cpu(cpu) {
2922                 p = &per_cpu(qedi_percpu, cpu);
2923                 INIT_LIST_HEAD(&p->work_list);
2924                 spin_lock_init(&p->p_work_lock);
2925                 p->iothread = NULL;
2926         }
2927
2928         rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online",
2929                                qedi_cpu_online, qedi_cpu_offline);
2930         if (rc < 0)
2931                 goto exit_qedi_init_2;
2932         qedi_cpuhp_state = rc;
2933
2934         rc = pci_register_driver(&qedi_pci_driver);
2935         if (rc) {
2936                 QEDI_ERR(NULL, "Failed to register driver\n");
2937                 goto exit_qedi_hp;
2938         }
2939
2940         return 0;
2941
2942 exit_qedi_hp:
2943         cpuhp_remove_state(qedi_cpuhp_state);
2944 exit_qedi_init_2:
2945         iscsi_unregister_transport(&qedi_iscsi_transport);
2946 exit_qedi_init_1:
2947 #ifdef CONFIG_DEBUG_FS
2948         qedi_dbg_exit();
2949 #endif
2950         qed_put_iscsi_ops();
2951         return rc;
2952 }
2953
2954 static void __exit qedi_cleanup(void)
2955 {
2956         pci_unregister_driver(&qedi_pci_driver);
2957         cpuhp_remove_state(qedi_cpuhp_state);
2958         iscsi_unregister_transport(&qedi_iscsi_transport);
2959
2960 #ifdef CONFIG_DEBUG_FS
2961         qedi_dbg_exit();
2962 #endif
2963         qed_put_iscsi_ops();
2964 }
2965
2966 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module");
2967 MODULE_LICENSE("GPL");
2968 MODULE_AUTHOR("QLogic Corporation");
2969 MODULE_VERSION(QEDI_MODULE_VERSION);
2970 module_init(qedi_init);
2971 module_exit(qedi_cleanup);