drivers/scsi/qla2xxx/qla_mid.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2014 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8 #include "qla_gbl.h"
   9 #include "qla_target.h"
  10
  11 #include <linux/moduleparam.h>
  12 #include <linux/vmalloc.h>
  13 #include <linux/slab.h>
  14 #include <linux/list.h>
  15
  16 #include <scsi/scsi_tcq.h>
  17 #include <scsi/scsicam.h>
  18 #include <linux/delay.h>
  19
  20 void
  21 qla2x00_vp_stop_timer(scsi_qla_host_t *vha)
  22 {
  23         if (vha->vp_idx && vha->timer_active) {
  24                 del_timer_sync(&vha->timer);
  25                 vha->timer_active = 0;
  26         }
  27 }
  28
  29 static uint32_t
  30 qla24xx_allocate_vp_id(scsi_qla_host_t *vha)
  31 {
  32         uint32_t vp_id;
  33         struct qla_hw_data *ha = vha->hw;
  34         unsigned long flags;
  35
  36         /* Find an empty slot and assign an vp_id */
  37         mutex_lock(&ha->vport_lock);
  38         vp_id = find_first_zero_bit(ha->vp_idx_map, ha->max_npiv_vports + 1);
  39         if (vp_id > ha->max_npiv_vports) {
  40                 ql_dbg(ql_dbg_vport, vha, 0xa000,
  41                     "vp_id %d is bigger than max-supported %d.\n",
  42                     vp_id, ha->max_npiv_vports);
  43                 mutex_unlock(&ha->vport_lock);
  44                 return vp_id;
  45         }
  46
  47         set_bit(vp_id, ha->vp_idx_map);
  48         ha->num_vhosts++;
  49         vha->vp_idx = vp_id;
  50
  51         spin_lock_irqsave(&ha->vport_slock, flags);
  52         list_add_tail(&vha->list, &ha->vp_list);
  53
  54         qlt_update_vp_map(vha, SET_VP_IDX);
  55
  56         spin_unlock_irqrestore(&ha->vport_slock, flags);
  57
  58         mutex_unlock(&ha->vport_lock);
  59         return vp_id;
  60 }
  61
  62 void
  63 qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
  64 {
  65         uint16_t vp_id;
  66         struct qla_hw_data *ha = vha->hw;
  67         unsigned long flags = 0;
  68
  69         mutex_lock(&ha->vport_lock);
  70         /*
  71          * Wait for all pending activities to finish before removing vport from
  72          * the list.
  73          * Lock needs to be held for safe removal from the list (it
  74          * ensures no active vp_list traversal while the vport is removed
  75          * from the queue)
  76          */
  77         wait_event_timeout(vha->vref_waitq, !atomic_read(&vha->vref_count),
  78             10*HZ);
  79
  80         spin_lock_irqsave(&ha->vport_slock, flags);
  81         if (atomic_read(&vha->vref_count)) {
  82                 ql_dbg(ql_dbg_vport, vha, 0xfffa,
  83                     "vha->vref_count=%u timeout\n", vha->vref_count.counter);
  84                 vha->vref_count = (atomic_t)ATOMIC_INIT(0);
  85         }
  86         list_del(&vha->list);
  87         qlt_update_vp_map(vha, RESET_VP_IDX);
  88         spin_unlock_irqrestore(&ha->vport_slock, flags);
  89
  90         vp_id = vha->vp_idx;
  91         ha->num_vhosts--;
  92         clear_bit(vp_id, ha->vp_idx_map);
  93
  94         mutex_unlock(&ha->vport_lock);
  95 }
  96
  97 static scsi_qla_host_t *
  98 qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name)
  99 {
 100         scsi_qla_host_t *vha;
 101         struct scsi_qla_host *tvha;
 102         unsigned long flags;
 103
 104         spin_lock_irqsave(&ha->vport_slock, flags);
 105         /* Locate matching device in database. */
 106         list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
 107                 if (!memcmp(port_name, vha->port_name, WWN_SIZE)) {
 108                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 109                         return vha;
 110                 }
 111         }
 112         spin_unlock_irqrestore(&ha->vport_slock, flags);
 113         return NULL;
 114 }
 115
 116 /*
 117  * qla2x00_mark_vp_devices_dead
 118  *      Updates fcport state when device goes offline.
 119  *
 120  * Input:
 121  *      ha = adapter block pointer.
 122  *      fcport = port structure pointer.
 123  *
 124  * Return:
 125  *      None.
 126  *
 127  * Context:
 128  */
 129 static void
 130 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
 131 {
 132         /*
 133          * !!! NOTE !!!
 134          * This function, if called in contexts other than vp create, disable
 135          * or delete, please make sure this is synchronized with the
 136          * delete thread.
 137          */
 138         fc_port_t *fcport;
 139
 140         list_for_each_entry(fcport, &vha->vp_fcports, list) {
 141                 ql_dbg(ql_dbg_vport, vha, 0xa001,
 142                     "Marking port dead, loop_id=0x%04x : %x.\n",
 143                     fcport->loop_id, fcport->vha->vp_idx);
 144
 145                 qla2x00_mark_device_lost(vha, fcport, 0, 0);
 146                 qla2x00_set_fcport_state(fcport, FCS_UNCONFIGURED);
 147         }
 148 }
 149
 150 int
 151 qla24xx_disable_vp(scsi_qla_host_t *vha)
 152 {
 153         unsigned long flags;
 154         int ret;
 155
 156         ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 157         atomic_set(&vha->loop_state, LOOP_DOWN);
 158         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 159
 160         /* Remove port id from vp target map */
 161         spin_lock_irqsave(&vha->hw->vport_slock, flags);
 162         qlt_update_vp_map(vha, RESET_AL_PA);
 163         spin_unlock_irqrestore(&vha->hw->vport_slock, flags);
 164
 165         qla2x00_mark_vp_devices_dead(vha);
 166         atomic_set(&vha->vp_state, VP_FAILED);
 167         vha->flags.management_server_logged_in = 0;
 168         if (ret == QLA_SUCCESS) {
 169                 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
 170         } else {
 171                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 172                 return -1;
 173         }
 174         return 0;
 175 }
 176
 177 int
 178 qla24xx_enable_vp(scsi_qla_host_t *vha)
 179 {
 180         int ret;
 181         struct qla_hw_data *ha = vha->hw;
 182         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 183
 184         /* Check if physical ha port is Up */
 185         if (atomic_read(&base_vha->loop_state) == LOOP_DOWN  ||
 186                 atomic_read(&base_vha->loop_state) == LOOP_DEAD ||
 187                 !(ha->current_topology & ISP_CFG_F)) {
 188                 vha->vp_err_state =  VP_ERR_PORTDWN;
 189                 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
 190                 goto enable_failed;
 191         }
 192
 193         /* Initialize the new vport unless it is a persistent port */
 194         mutex_lock(&ha->vport_lock);
 195         ret = qla24xx_modify_vp_config(vha);
 196         mutex_unlock(&ha->vport_lock);
 197
 198         if (ret != QLA_SUCCESS) {
 199                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 200                 goto enable_failed;
 201         }
 202
 203         ql_dbg(ql_dbg_taskm, vha, 0x801a,
 204             "Virtual port with id: %d - Enabled.\n", vha->vp_idx);
 205         return 0;
 206
 207 enable_failed:
 208         ql_dbg(ql_dbg_taskm, vha, 0x801b,
 209             "Virtual port with id: %d - Disabled.\n", vha->vp_idx);
 210         return 1;
 211 }
 212
 213 static void
 214 qla24xx_configure_vp(scsi_qla_host_t *vha)
 215 {
 216         struct fc_vport *fc_vport;
 217         int ret;
 218
 219         fc_vport = vha->fc_vport;
 220
 221         ql_dbg(ql_dbg_vport, vha, 0xa002,
 222             "%s: change request #3.\n", __func__);
 223         ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
 224         if (ret != QLA_SUCCESS) {
 225                 ql_dbg(ql_dbg_vport, vha, 0xa003, "Failed to enable "
 226                     "receiving of RSCN requests: 0x%x.\n", ret);
 227                 return;
 228         } else {
 229                 /* Corresponds to SCR enabled */
 230                 clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
 231         }
 232
 233         vha->flags.online = 1;
 234         if (qla24xx_configure_vhba(vha))
 235                 return;
 236
 237         atomic_set(&vha->vp_state, VP_ACTIVE);
 238         fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
 239 }
 240
 241 void
 242 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
 243 {
 244         scsi_qla_host_t *vha;
 245         struct qla_hw_data *ha = rsp->hw;
 246         int i = 0;
 247         unsigned long flags;
 248
 249         spin_lock_irqsave(&ha->vport_slock, flags);
 250         list_for_each_entry(vha, &ha->vp_list, list) {
 251                 if (vha->vp_idx) {
 252                         atomic_inc(&vha->vref_count);
 253                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 254
 255                         switch (mb[0]) {
 256                         case MBA_LIP_OCCURRED:
 257                         case MBA_LOOP_UP:
 258                         case MBA_LOOP_DOWN:
 259                         case MBA_LIP_RESET:
 260                         case MBA_POINT_TO_POINT:
 261                         case MBA_CHG_IN_CONNECTION:
 262                         case MBA_PORT_UPDATE:
 263                         case MBA_RSCN_UPDATE:
 264                                 ql_dbg(ql_dbg_async, vha, 0x5024,
 265                                     "Async_event for VP[%d], mb=0x%x vha=%p.\n",
 266                                     i, *mb, vha);
 267                                 qla2x00_async_event(vha, rsp, mb);
 268                                 break;
 269                         }
 270
 271                         spin_lock_irqsave(&ha->vport_slock, flags);
 272                         atomic_dec(&vha->vref_count);
 273                         wake_up(&vha->vref_waitq);
 274                 }
 275                 i++;
 276         }
 277         spin_unlock_irqrestore(&ha->vport_slock, flags);
 278 }
 279
 280 int
 281 qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
 282 {
 283         /*
 284          * Physical port will do most of the abort and recovery work. We can
 285          * just treat it as a loop down
 286          */
 287         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 288                 atomic_set(&vha->loop_state, LOOP_DOWN);
 289                 qla2x00_mark_all_devices_lost(vha, 0);
 290         } else {
 291                 if (!atomic_read(&vha->loop_down_timer))
 292                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 293         }
 294
 295         /*
 296          * To exclusively reset vport, we need to log it out first.  Note: this
 297          * control_vp can fail if ISP reset is already issued, this is
 298          * expected, as the vp would be already logged out due to ISP reset.
 299          */
 300         if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
 301                 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 302
 303         ql_dbg(ql_dbg_taskm, vha, 0x801d,
 304             "Scheduling enable of Vport %d.\n", vha->vp_idx);
 305         return qla24xx_enable_vp(vha);
 306 }
 307
 308 static int
 309 qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
 310 {
 311         struct qla_hw_data *ha = vha->hw;
 312         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 313
 314         ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x4012,
 315             "Entering %s vp_flags: 0x%lx.\n", __func__, vha->vp_flags);
 316
 317         qla2x00_do_work(vha);
 318
 319         /* Check if Fw is ready to configure VP first */
 320         if (test_bit(VP_CONFIG_OK, &base_vha->vp_flags)) {
 321                 if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
 322                         /* VP acquired. complete port configuration */
 323                         ql_dbg(ql_dbg_dpc, vha, 0x4014,
 324                             "Configure VP scheduled.\n");
 325                         qla24xx_configure_vp(vha);
 326                         ql_dbg(ql_dbg_dpc, vha, 0x4015,
 327                             "Configure VP end.\n");
 328                         return 0;
 329                 }
 330         }
 331
 332         if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
 333                 ql_dbg(ql_dbg_dpc, vha, 0x4016,
 334                     "FCPort update scheduled.\n");
 335                 qla2x00_update_fcports(vha);
 336                 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
 337                 ql_dbg(ql_dbg_dpc, vha, 0x4017,
 338                     "FCPort update end.\n");
 339         }
 340
 341         if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) &&
 342                 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
 343                 atomic_read(&vha->loop_state) != LOOP_DOWN) {
 344
 345                 ql_dbg(ql_dbg_dpc, vha, 0x4018,
 346                     "Relogin needed scheduled.\n");
 347                 qla2x00_relogin(vha);
 348                 ql_dbg(ql_dbg_dpc, vha, 0x4019,
 349                     "Relogin needed end.\n");
 350         }
 351
 352         if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
 353             (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
 354                 clear_bit(RESET_ACTIVE, &vha->dpc_flags);
 355         }
 356
 357         if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
 358                 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
 359                         ql_dbg(ql_dbg_dpc, vha, 0x401a,
 360                             "Loop resync scheduled.\n");
 361                         qla2x00_loop_resync(vha);
 362                         clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
 363                         ql_dbg(ql_dbg_dpc, vha, 0x401b,
 364                             "Loop resync end.\n");
 365                 }
 366         }
 367
 368         ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x401c,
 369             "Exiting %s.\n", __func__);
 370         return 0;
 371 }
 372
 373 void
 374 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
 375 {
 376         struct qla_hw_data *ha = vha->hw;
 377         scsi_qla_host_t *vp;
 378         unsigned long flags = 0;
 379
 380         if (vha->vp_idx)
 381                 return;
 382         if (list_empty(&ha->vp_list))
 383                 return;
 384
 385         clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);
 386
 387         if (!(ha->current_topology & ISP_CFG_F))
 388                 return;
 389
 390         spin_lock_irqsave(&ha->vport_slock, flags);
 391         list_for_each_entry(vp, &ha->vp_list, list) {
 392                 if (vp->vp_idx) {
 393                         atomic_inc(&vp->vref_count);
 394                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 395
 396                         qla2x00_do_dpc_vp(vp);
 397
 398                         spin_lock_irqsave(&ha->vport_slock, flags);
 399                         atomic_dec(&vp->vref_count);
 400                 }
 401         }
 402         spin_unlock_irqrestore(&ha->vport_slock, flags);
 403 }
 404
 405 int
 406 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
 407 {
 408         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 409         struct qla_hw_data *ha = base_vha->hw;
 410         scsi_qla_host_t *vha;
 411         uint8_t port_name[WWN_SIZE];
 412
 413         if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
 414                 return VPCERR_UNSUPPORTED;
 415
 416         /* Check up the F/W and H/W support NPIV */
 417         if (!ha->flags.npiv_supported)
 418                 return VPCERR_UNSUPPORTED;
 419
 420         /* Check up whether npiv supported switch presented */
 421         if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
 422                 return VPCERR_NO_FABRIC_SUPP;
 423
 424         /* Check up unique WWPN */
 425         u64_to_wwn(fc_vport->port_name, port_name);
 426         if (!memcmp(port_name, base_vha->port_name, WWN_SIZE))
 427                 return VPCERR_BAD_WWN;
 428         vha = qla24xx_find_vhost_by_name(ha, port_name);
 429         if (vha)
 430                 return VPCERR_BAD_WWN;
 431
 432         /* Check up max-npiv-supports */
 433         if (ha->num_vhosts > ha->max_npiv_vports) {
 434                 ql_dbg(ql_dbg_vport, vha, 0xa004,
 435                     "num_vhosts %ud is bigger "
 436                     "than max_npiv_vports %ud.\n",
 437                     ha->num_vhosts, ha->max_npiv_vports);
 438                 return VPCERR_UNSUPPORTED;
 439         }
 440         return 0;
 441 }
 442
 443 scsi_qla_host_t *
 444 qla24xx_create_vhost(struct fc_vport *fc_vport)
 445 {
 446         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 447         struct qla_hw_data *ha = base_vha->hw;
 448         scsi_qla_host_t *vha;
 449         struct scsi_host_template *sht = &qla2xxx_driver_template;
 450         struct Scsi_Host *host;
 451
 452         vha = qla2x00_create_host(sht, ha);
 453         if (!vha) {
 454                 ql_log(ql_log_warn, vha, 0xa005,
 455                     "scsi_host_alloc() failed for vport.\n");
 456                 return(NULL);
 457         }
 458
 459         host = vha->host;
 460         fc_vport->dd_data = vha;
 461         /* New host info */
 462         u64_to_wwn(fc_vport->node_name, vha->node_name);
 463         u64_to_wwn(fc_vport->port_name, vha->port_name);
 464
 465         vha->fc_vport = fc_vport;
 466         vha->device_flags = 0;
 467         vha->vp_idx = qla24xx_allocate_vp_id(vha);
 468         if (vha->vp_idx > ha->max_npiv_vports) {
 469                 ql_dbg(ql_dbg_vport, vha, 0xa006,
 470                     "Couldn't allocate vp_id.\n");
 471                 goto create_vhost_failed;
 472         }
 473         vha->mgmt_svr_loop_id = 10 + vha->vp_idx;
 474
 475         vha->dpc_flags = 0L;
 476
 477         /*
 478          * To fix the issue of processing a parent's RSCN for the vport before
 479          * its SCR is complete.
 480          */
 481         set_bit(VP_SCR_NEEDED, &vha->vp_flags);
 482         atomic_set(&vha->loop_state, LOOP_DOWN);
 483         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 484
 485         qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);
 486
 487         vha->req = base_vha->req;
 488         host->can_queue = base_vha->req->length + 128;
 489         host->cmd_per_lun = 3;
 490         if (IS_T10_PI_CAPABLE(ha) && ql2xenabledif)
 491                 host->max_cmd_len = 32;
 492         else
 493                 host->max_cmd_len = MAX_CMDSZ;
 494         host->max_channel = MAX_BUSES - 1;
 495         host->max_lun = ql2xmaxlun;
 496         host->unique_id = host->host_no;
 497         host->max_id = ha->max_fibre_devices;
 498         host->transportt = qla2xxx_transport_vport_template;
 499
 500         ql_dbg(ql_dbg_vport, vha, 0xa007,
 501             "Detect vport hba %ld at address = %p.\n",
 502             vha->host_no, vha);
 503
 504         vha->flags.init_done = 1;
 505
 506         mutex_lock(&ha->vport_lock);
 507         set_bit(vha->vp_idx, ha->vp_idx_map);
 508         ha->cur_vport_count++;
 509         mutex_unlock(&ha->vport_lock);
 510
 511         return vha;
 512
 513 create_vhost_failed:
 514         return NULL;
 515 }
 516
 517 static void
 518 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req)
 519 {
 520         struct qla_hw_data *ha = vha->hw;
 521         uint16_t que_id = req->id;
 522
 523         dma_free_coherent(&ha->pdev->dev, (req->length + 1) *
 524                 sizeof(request_t), req->ring, req->dma);
 525         req->ring = NULL;
 526         req->dma = 0;
 527         if (que_id) {
 528                 ha->req_q_map[que_id] = NULL;
 529                 mutex_lock(&ha->vport_lock);
 530                 clear_bit(que_id, ha->req_qid_map);
 531                 mutex_unlock(&ha->vport_lock);
 532         }
 533         kfree(req->outstanding_cmds);
 534         kfree(req);
 535         req = NULL;
 536 }
 537
 538 static void
 539 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 540 {
 541         struct qla_hw_data *ha = vha->hw;
 542         uint16_t que_id = rsp->id;
 543
 544         if (rsp->msix && rsp->msix->have_irq) {
 545                 free_irq(rsp->msix->vector, rsp);
 546                 rsp->msix->have_irq = 0;
 547                 rsp->msix->rsp = NULL;
 548         }
 549         dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) *
 550                 sizeof(response_t), rsp->ring, rsp->dma);
 551         rsp->ring = NULL;
 552         rsp->dma = 0;
 553         if (que_id) {
 554                 ha->rsp_q_map[que_id] = NULL;
 555                 mutex_lock(&ha->vport_lock);
 556                 clear_bit(que_id, ha->rsp_qid_map);
 557                 mutex_unlock(&ha->vport_lock);
 558         }
 559         kfree(rsp);
 560         rsp = NULL;
 561 }
 562
 563 int
 564 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
 565 {
 566         int ret = -1;
 567
 568         if (req) {
 569                 req->options |= BIT_0;
 570                 ret = qla25xx_init_req_que(vha, req);
 571         }
 572         if (ret == QLA_SUCCESS)
 573                 qla25xx_free_req_que(vha, req);
 574
 575         return ret;
 576 }
 577
 578 static int
 579 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 580 {
 581         int ret = -1;
 582
 583         if (rsp) {
 584                 rsp->options |= BIT_0;
 585                 ret = qla25xx_init_rsp_que(vha, rsp);
 586         }
 587         if (ret == QLA_SUCCESS)
 588                 qla25xx_free_rsp_que(vha, rsp);
 589
 590         return ret;
 591 }
 592
 593 /* Delete all queues for a given vhost */
 594 int
 595 qla25xx_delete_queues(struct scsi_qla_host *vha)
 596 {
 597         int cnt, ret = 0;
 598         struct req_que *req = NULL;
 599         struct rsp_que *rsp = NULL;
 600         struct qla_hw_data *ha = vha->hw;
 601
 602         /* Delete request queues */
 603         for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
 604                 req = ha->req_q_map[cnt];
 605                 if (req && test_bit(cnt, ha->req_qid_map)) {
 606                         ret = qla25xx_delete_req_que(vha, req);
 607                         if (ret != QLA_SUCCESS) {
 608                                 ql_log(ql_log_warn, vha, 0x00ea,
 609                                     "Couldn't delete req que %d.\n",
 610                                     req->id);
 611                                 return ret;
 612                         }
 613                 }
 614         }
 615
 616         /* Delete response queues */
 617         for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) {
 618                 rsp = ha->rsp_q_map[cnt];
 619                 if (rsp && test_bit(cnt, ha->rsp_qid_map)) {
 620                         ret = qla25xx_delete_rsp_que(vha, rsp);
 621                         if (ret != QLA_SUCCESS) {
 622                                 ql_log(ql_log_warn, vha, 0x00eb,
 623                                     "Couldn't delete rsp que %d.\n",
 624                                     rsp->id);
 625                                 return ret;
 626                         }
 627                 }
 628         }
 629         return ret;
 630 }
 631
 632 int
 633 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
 634         uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos)
 635 {
 636         int ret = 0;
 637         struct req_que *req = NULL;
 638         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 639         uint16_t que_id = 0;
 640         device_reg_t *reg;
 641         uint32_t cnt;
 642
 643         req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
 644         if (req == NULL) {
 645                 ql_log(ql_log_fatal, base_vha, 0x00d9,
 646                     "Failed to allocate memory for request queue.\n");
 647                 goto failed;
 648         }
 649
 650         req->length = REQUEST_ENTRY_CNT_24XX;
 651         req->ring = dma_alloc_coherent(&ha->pdev->dev,
 652                         (req->length + 1) * sizeof(request_t),
 653                         &req->dma, GFP_KERNEL);
 654         if (req->ring == NULL) {
 655                 ql_log(ql_log_fatal, base_vha, 0x00da,
 656                     "Failed to allocate memory for request_ring.\n");
 657                 goto que_failed;
 658         }
 659
 660         ret = qla2x00_alloc_outstanding_cmds(ha, req);
 661         if (ret != QLA_SUCCESS)
 662                 goto que_failed;
 663
 664         mutex_lock(&ha->vport_lock);
 665         que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues);
 666         if (que_id >= ha->max_req_queues) {
 667                 mutex_unlock(&ha->vport_lock);
 668                 ql_log(ql_log_warn, base_vha, 0x00db,
 669                     "No resources to create additional request queue.\n");
 670                 goto que_failed;
 671         }
 672         set_bit(que_id, ha->req_qid_map);
 673         ha->req_q_map[que_id] = req;
 674         req->rid = rid;
 675         req->vp_idx = vp_idx;
 676         req->qos = qos;
 677
 678         ql_dbg(ql_dbg_multiq, base_vha, 0xc002,
 679             "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
 680             que_id, req->rid, req->vp_idx, req->qos);
 681         ql_dbg(ql_dbg_init, base_vha, 0x00dc,
 682             "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
 683             que_id, req->rid, req->vp_idx, req->qos);
 684         if (rsp_que < 0)
 685                 req->rsp = NULL;
 686         else
 687                 req->rsp = ha->rsp_q_map[rsp_que];
 688         /* Use alternate PCI bus number */
 689         if (MSB(req->rid))
 690                 options |= BIT_4;
 691         /* Use alternate PCI devfn */
 692         if (LSB(req->rid))
 693                 options |= BIT_5;
 694         req->options = options;
 695
 696         ql_dbg(ql_dbg_multiq, base_vha, 0xc003,
 697             "options=0x%x.\n", req->options);
 698         ql_dbg(ql_dbg_init, base_vha, 0x00dd,
 699             "options=0x%x.\n", req->options);
 700         for (cnt = 1; cnt < req->num_outstanding_cmds; cnt++)
 701                 req->outstanding_cmds[cnt] = NULL;
 702         req->current_outstanding_cmd = 1;
 703
 704         req->ring_ptr = req->ring;
 705         req->ring_index = 0;
 706         req->cnt = req->length;
 707         req->id = que_id;
 708         reg = ISP_QUE_REG(ha, que_id);
 709         req->req_q_in = &reg->isp25mq.req_q_in;
 710         req->req_q_out = &reg->isp25mq.req_q_out;
 711         req->max_q_depth = ha->req_q_map[0]->max_q_depth;
 712         req->out_ptr = (void *)(req->ring + req->length);
 713         mutex_unlock(&ha->vport_lock);
 714         ql_dbg(ql_dbg_multiq, base_vha, 0xc004,
 715             "ring_ptr=%p ring_index=%d, "
 716             "cnt=%d id=%d max_q_depth=%d.\n",
 717             req->ring_ptr, req->ring_index,
 718             req->cnt, req->id, req->max_q_depth);
 719         ql_dbg(ql_dbg_init, base_vha, 0x00de,
 720             "ring_ptr=%p ring_index=%d, "
 721             "cnt=%d id=%d max_q_depth=%d.\n",
 722             req->ring_ptr, req->ring_index, req->cnt,
 723             req->id, req->max_q_depth);
 724
 725         ret = qla25xx_init_req_que(base_vha, req);
 726         if (ret != QLA_SUCCESS) {
 727                 ql_log(ql_log_fatal, base_vha, 0x00df,
 728                     "%s failed.\n", __func__);
 729                 mutex_lock(&ha->vport_lock);
 730                 clear_bit(que_id, ha->req_qid_map);
 731                 mutex_unlock(&ha->vport_lock);
 732                 goto que_failed;
 733         }
 734
 735         return req->id;
 736
 737 que_failed:
 738         qla25xx_free_req_que(base_vha, req);
 739 failed:
 740         return 0;
 741 }
 742
 743 static void qla_do_work(struct work_struct *work)
 744 {
 745         unsigned long flags;
 746         struct rsp_que *rsp = container_of(work, struct rsp_que, q_work);
 747         struct scsi_qla_host *vha;
 748         struct qla_hw_data *ha = rsp->hw;
 749
 750         spin_lock_irqsave(&rsp->hw->hardware_lock, flags);
 751         vha = pci_get_drvdata(ha->pdev);
 752         qla24xx_process_response_queue(vha, rsp);
 753         spin_unlock_irqrestore(&rsp->hw->hardware_lock, flags);
 754 }
 755
 756 /* create response queue */
 757 int
 758 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
 759         uint8_t vp_idx, uint16_t rid, int req)
 760 {
 761         int ret = 0;
 762         struct rsp_que *rsp = NULL;
 763         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 764         uint16_t que_id = 0;
 765         device_reg_t *reg;
 766
 767         rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
 768         if (rsp == NULL) {
 769                 ql_log(ql_log_warn, base_vha, 0x0066,
 770                     "Failed to allocate memory for response queue.\n");
 771                 goto failed;
 772         }
 773
 774         rsp->length = RESPONSE_ENTRY_CNT_MQ;
 775         rsp->ring = dma_alloc_coherent(&ha->pdev->dev,
 776                         (rsp->length + 1) * sizeof(response_t),
 777                         &rsp->dma, GFP_KERNEL);
 778         if (rsp->ring == NULL) {
 779                 ql_log(ql_log_warn, base_vha, 0x00e1,
 780                     "Failed to allocate memory for response ring.\n");
 781                 goto que_failed;
 782         }
 783
 784         mutex_lock(&ha->vport_lock);
 785         que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues);
 786         if (que_id >= ha->max_rsp_queues) {
 787                 mutex_unlock(&ha->vport_lock);
 788                 ql_log(ql_log_warn, base_vha, 0x00e2,
 789                     "No resources to create additional request queue.\n");
 790                 goto que_failed;
 791         }
 792         set_bit(que_id, ha->rsp_qid_map);
 793
 794         if (ha->flags.msix_enabled)
 795                 rsp->msix = &ha->msix_entries[que_id + 1];
 796         else
 797                 ql_log(ql_log_warn, base_vha, 0x00e3,
 798                     "MSIX not enabled.\n");
 799
 800         ha->rsp_q_map[que_id] = rsp;
 801         rsp->rid = rid;
 802         rsp->vp_idx = vp_idx;
 803         rsp->hw = ha;
 804         ql_dbg(ql_dbg_init, base_vha, 0x00e4,
 805             "queue_id=%d rid=%d vp_idx=%d hw=%p.\n",
 806             que_id, rsp->rid, rsp->vp_idx, rsp->hw);
 807         /* Use alternate PCI bus number */
 808         if (MSB(rsp->rid))
 809                 options |= BIT_4;
 810         /* Use alternate PCI devfn */
 811         if (LSB(rsp->rid))
 812                 options |= BIT_5;
 813         /* Enable MSIX handshake mode on for uncapable adapters */
 814         if (!IS_MSIX_NACK_CAPABLE(ha))
 815                 options |= BIT_6;
 816
 817         rsp->options = options;
 818         rsp->id = que_id;
 819         reg = ISP_QUE_REG(ha, que_id);
 820         rsp->rsp_q_in = &reg->isp25mq.rsp_q_in;
 821         rsp->rsp_q_out = &reg->isp25mq.rsp_q_out;
 822         rsp->in_ptr = (void *)(rsp->ring + rsp->length);
 823         mutex_unlock(&ha->vport_lock);
 824         ql_dbg(ql_dbg_multiq, base_vha, 0xc00b,
 825             "options=%x id=%d rsp_q_in=%p rsp_q_out=%p",
 826             rsp->options, rsp->id, rsp->rsp_q_in,
 827             rsp->rsp_q_out);
 828         ql_dbg(ql_dbg_init, base_vha, 0x00e5,
 829             "options=%x id=%d rsp_q_in=%p rsp_q_out=%p",
 830             rsp->options, rsp->id, rsp->rsp_q_in,
 831             rsp->rsp_q_out);
 832
 833         ret = qla25xx_request_irq(rsp);
 834         if (ret)
 835                 goto que_failed;
 836
 837         ret = qla25xx_init_rsp_que(base_vha, rsp);
 838         if (ret != QLA_SUCCESS) {
 839                 ql_log(ql_log_fatal, base_vha, 0x00e7,
 840                     "%s failed.\n", __func__);
 841                 mutex_lock(&ha->vport_lock);
 842                 clear_bit(que_id, ha->rsp_qid_map);
 843                 mutex_unlock(&ha->vport_lock);
 844                 goto que_failed;
 845         }
 846         if (req >= 0)
 847                 rsp->req = ha->req_q_map[req];
 848         else
 849                 rsp->req = NULL;
 850
 851         qla2x00_init_response_q_entries(rsp);
 852         if (rsp->hw->wq)
 853                 INIT_WORK(&rsp->q_work, qla_do_work);
 854         return rsp->id;
 855
 856 que_failed:
 857         qla25xx_free_rsp_que(base_vha, rsp);
 858 failed:
 859         return 0;
 860 }