drivers/scsi/qla2xxx/qla_mid.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2012 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         spin_lock_irqsave(&ha->vport_slock, flags);
  78         while (atomic_read(&vha->vref_count)) {
  79                 spin_unlock_irqrestore(&ha->vport_slock, flags);
  80
  81                 msleep(500);
  82
  83                 spin_lock_irqsave(&ha->vport_slock, flags);
  84         }
  85         list_del(&vha->list);
  86         qlt_update_vp_map(vha, RESET_VP_IDX);
  87         spin_unlock_irqrestore(&ha->vport_slock, flags);
  88
  89         vp_id = vha->vp_idx;
  90         ha->num_vhosts--;
  91         clear_bit(vp_id, ha->vp_idx_map);
  92
  93         mutex_unlock(&ha->vport_lock);
  94 }
  95
  96 static scsi_qla_host_t *
  97 qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name)
  98 {
  99         scsi_qla_host_t *vha;
 100         struct scsi_qla_host *tvha;
 101         unsigned long flags;
 102
 103         spin_lock_irqsave(&ha->vport_slock, flags);
 104         /* Locate matching device in database. */
 105         list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
 106                 if (!memcmp(port_name, vha->port_name, WWN_SIZE)) {
 107                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 108                         return vha;
 109                 }
 110         }
 111         spin_unlock_irqrestore(&ha->vport_slock, flags);
 112         return NULL;
 113 }
 114
 115 /*
 116  * qla2x00_mark_vp_devices_dead
 117  *      Updates fcport state when device goes offline.
 118  *
 119  * Input:
 120  *      ha = adapter block pointer.
 121  *      fcport = port structure pointer.
 122  *
 123  * Return:
 124  *      None.
 125  *
 126  * Context:
 127  */
 128 static void
 129 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
 130 {
 131         /*
 132          * !!! NOTE !!!
 133          * This function, if called in contexts other than vp create, disable
 134          * or delete, please make sure this is synchronized with the
 135          * delete thread.
 136          */
 137         fc_port_t *fcport;
 138
 139         list_for_each_entry(fcport, &vha->vp_fcports, list) {
 140                 ql_dbg(ql_dbg_vport, vha, 0xa001,
 141                     "Marking port dead, loop_id=0x%04x : %x.\n",
 142                     fcport->loop_id, fcport->vha->vp_idx);
 143
 144                 qla2x00_mark_device_lost(vha, fcport, 0, 0);
 145                 qla2x00_set_fcport_state(fcport, FCS_UNCONFIGURED);
 146         }
 147 }
 148
 149 int
 150 qla24xx_disable_vp(scsi_qla_host_t *vha)
 151 {
 152         unsigned long flags;
 153         int ret;
 154
 155         ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 156         atomic_set(&vha->loop_state, LOOP_DOWN);
 157         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 158
 159         /* Remove port id from vp target map */
 160         spin_lock_irqsave(&vha->hw->vport_slock, flags);
 161         qlt_update_vp_map(vha, RESET_AL_PA);
 162         spin_unlock_irqrestore(&vha->hw->vport_slock, flags);
 163
 164         qla2x00_mark_vp_devices_dead(vha);
 165         atomic_set(&vha->vp_state, VP_FAILED);
 166         vha->flags.management_server_logged_in = 0;
 167         if (ret == QLA_SUCCESS) {
 168                 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
 169         } else {
 170                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 171                 return -1;
 172         }
 173         return 0;
 174 }
 175
 176 int
 177 qla24xx_enable_vp(scsi_qla_host_t *vha)
 178 {
 179         int ret;
 180         struct qla_hw_data *ha = vha->hw;
 181         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 182
 183         /* Check if physical ha port is Up */
 184         if (atomic_read(&base_vha->loop_state) == LOOP_DOWN  ||
 185                 atomic_read(&base_vha->loop_state) == LOOP_DEAD ||
 186                 !(ha->current_topology & ISP_CFG_F)) {
 187                 vha->vp_err_state =  VP_ERR_PORTDWN;
 188                 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
 189                 goto enable_failed;
 190         }
 191
 192         /* Initialize the new vport unless it is a persistent port */
 193         mutex_lock(&ha->vport_lock);
 194         ret = qla24xx_modify_vp_config(vha);
 195         mutex_unlock(&ha->vport_lock);
 196
 197         if (ret != QLA_SUCCESS) {
 198                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 199                 goto enable_failed;
 200         }
 201
 202         ql_dbg(ql_dbg_taskm, vha, 0x801a,
 203             "Virtual port with id: %d - Enabled.\n", vha->vp_idx);
 204         return 0;
 205
 206 enable_failed:
 207         ql_dbg(ql_dbg_taskm, vha, 0x801b,
 208             "Virtual port with id: %d - Disabled.\n", vha->vp_idx);
 209         return 1;
 210 }
 211
 212 static void
 213 qla24xx_configure_vp(scsi_qla_host_t *vha)
 214 {
 215         struct fc_vport *fc_vport;
 216         int ret;
 217
 218         fc_vport = vha->fc_vport;
 219
 220         ql_dbg(ql_dbg_vport, vha, 0xa002,
 221             "%s: change request #3.\n", __func__);
 222         ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
 223         if (ret != QLA_SUCCESS) {
 224                 ql_dbg(ql_dbg_vport, vha, 0xa003, "Failed to enable "
 225                     "receiving of RSCN requests: 0x%x.\n", ret);
 226                 return;
 227         } else {
 228                 /* Corresponds to SCR enabled */
 229                 clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
 230         }
 231
 232         vha->flags.online = 1;
 233         if (qla24xx_configure_vhba(vha))
 234                 return;
 235
 236         atomic_set(&vha->vp_state, VP_ACTIVE);
 237         fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
 238 }
 239
 240 void
 241 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
 242 {
 243         scsi_qla_host_t *vha;
 244         struct qla_hw_data *ha = rsp->hw;
 245         int i = 0;
 246         unsigned long flags;
 247
 248         spin_lock_irqsave(&ha->vport_slock, flags);
 249         list_for_each_entry(vha, &ha->vp_list, list) {
 250                 if (vha->vp_idx) {
 251                         atomic_inc(&vha->vref_count);
 252                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 253
 254                         switch (mb[0]) {
 255                         case MBA_LIP_OCCURRED:
 256                         case MBA_LOOP_UP:
 257                         case MBA_LOOP_DOWN:
 258                         case MBA_LIP_RESET:
 259                         case MBA_POINT_TO_POINT:
 260                         case MBA_CHG_IN_CONNECTION:
 261                         case MBA_PORT_UPDATE:
 262                         case MBA_RSCN_UPDATE:
 263                                 ql_dbg(ql_dbg_async, vha, 0x5024,
 264                                     "Async_event for VP[%d], mb=0x%x vha=%p.\n",
 265                                     i, *mb, vha);
 266                                 qla2x00_async_event(vha, rsp, mb);
 267                                 break;
 268                         }
 269
 270                         spin_lock_irqsave(&ha->vport_slock, flags);
 271                         atomic_dec(&vha->vref_count);
 272                 }
 273                 i++;
 274         }
 275         spin_unlock_irqrestore(&ha->vport_slock, flags);
 276 }
 277
 278 int
 279 qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
 280 {
 281         /*
 282          * Physical port will do most of the abort and recovery work. We can
 283          * just treat it as a loop down
 284          */
 285         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 286                 atomic_set(&vha->loop_state, LOOP_DOWN);
 287                 qla2x00_mark_all_devices_lost(vha, 0);
 288         } else {
 289                 if (!atomic_read(&vha->loop_down_timer))
 290                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 291         }
 292
 293         /*
 294          * To exclusively reset vport, we need to log it out first.  Note: this
 295          * control_vp can fail if ISP reset is already issued, this is
 296          * expected, as the vp would be already logged out due to ISP reset.
 297          */
 298         if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
 299                 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 300
 301         ql_dbg(ql_dbg_taskm, vha, 0x801d,
 302             "Scheduling enable of Vport %d.\n", vha->vp_idx);
 303         return qla24xx_enable_vp(vha);
 304 }
 305
 306 static int
 307 qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
 308 {
 309         ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x4012,
 310             "Entering %s vp_flags: 0x%lx.\n", __func__, vha->vp_flags);
 311
 312         qla2x00_do_work(vha);
 313
 314         if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
 315                 /* VP acquired. complete port configuration */
 316                 ql_dbg(ql_dbg_dpc, vha, 0x4014,
 317                     "Configure VP scheduled.\n");
 318                 qla24xx_configure_vp(vha);
 319                 ql_dbg(ql_dbg_dpc, vha, 0x4015,
 320                     "Configure VP end.\n");
 321                 return 0;
 322         }
 323
 324         if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
 325                 ql_dbg(ql_dbg_dpc, vha, 0x4016,
 326                     "FCPort update scheduled.\n");
 327                 qla2x00_update_fcports(vha);
 328                 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
 329                 ql_dbg(ql_dbg_dpc, vha, 0x4017,
 330                     "FCPort update end.\n");
 331         }
 332
 333         if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) &&
 334                 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
 335                 atomic_read(&vha->loop_state) != LOOP_DOWN) {
 336
 337                 ql_dbg(ql_dbg_dpc, vha, 0x4018,
 338                     "Relogin needed scheduled.\n");
 339                 qla2x00_relogin(vha);
 340                 ql_dbg(ql_dbg_dpc, vha, 0x4019,
 341                     "Relogin needed end.\n");
 342         }
 343
 344         if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
 345             (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
 346                 clear_bit(RESET_ACTIVE, &vha->dpc_flags);
 347         }
 348
 349         if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
 350                 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
 351                         ql_dbg(ql_dbg_dpc, vha, 0x401a,
 352                             "Loop resync scheduled.\n");
 353                         qla2x00_loop_resync(vha);
 354                         clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
 355                         ql_dbg(ql_dbg_dpc, vha, 0x401b,
 356                             "Loop resync end.\n");
 357                 }
 358         }
 359
 360         ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x401c,
 361             "Exiting %s.\n", __func__);
 362         return 0;
 363 }
 364
 365 void
 366 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
 367 {
 368         int ret;
 369         struct qla_hw_data *ha = vha->hw;
 370         scsi_qla_host_t *vp;
 371         unsigned long flags = 0;
 372
 373         if (vha->vp_idx)
 374                 return;
 375         if (list_empty(&ha->vp_list))
 376                 return;
 377
 378         clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);
 379
 380         if (!(ha->current_topology & ISP_CFG_F))
 381                 return;
 382
 383         spin_lock_irqsave(&ha->vport_slock, flags);
 384         list_for_each_entry(vp, &ha->vp_list, list) {
 385                 if (vp->vp_idx) {
 386                         atomic_inc(&vp->vref_count);
 387                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 388
 389                         ret = qla2x00_do_dpc_vp(vp);
 390
 391                         spin_lock_irqsave(&ha->vport_slock, flags);
 392                         atomic_dec(&vp->vref_count);
 393                 }
 394         }
 395         spin_unlock_irqrestore(&ha->vport_slock, flags);
 396 }
 397
 398 int
 399 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
 400 {
 401         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 402         struct qla_hw_data *ha = base_vha->hw;
 403         scsi_qla_host_t *vha;
 404         uint8_t port_name[WWN_SIZE];
 405
 406         if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
 407                 return VPCERR_UNSUPPORTED;
 408
 409         /* Check up the F/W and H/W support NPIV */
 410         if (!ha->flags.npiv_supported)
 411                 return VPCERR_UNSUPPORTED;
 412
 413         /* Check up whether npiv supported switch presented */
 414         if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
 415                 return VPCERR_NO_FABRIC_SUPP;
 416
 417         /* Check up unique WWPN */
 418         u64_to_wwn(fc_vport->port_name, port_name);
 419         if (!memcmp(port_name, base_vha->port_name, WWN_SIZE))
 420                 return VPCERR_BAD_WWN;
 421         vha = qla24xx_find_vhost_by_name(ha, port_name);
 422         if (vha)
 423                 return VPCERR_BAD_WWN;
 424
 425         /* Check up max-npiv-supports */
 426         if (ha->num_vhosts > ha->max_npiv_vports) {
 427                 ql_dbg(ql_dbg_vport, vha, 0xa004,
 428                     "num_vhosts %ud is bigger "
 429                     "than max_npiv_vports %ud.\n",
 430                     ha->num_vhosts, ha->max_npiv_vports);
 431                 return VPCERR_UNSUPPORTED;
 432         }
 433         return 0;
 434 }
 435
 436 scsi_qla_host_t *
 437 qla24xx_create_vhost(struct fc_vport *fc_vport)
 438 {
 439         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 440         struct qla_hw_data *ha = base_vha->hw;
 441         scsi_qla_host_t *vha;
 442         struct scsi_host_template *sht = &qla2xxx_driver_template;
 443         struct Scsi_Host *host;
 444
 445         vha = qla2x00_create_host(sht, ha);
 446         if (!vha) {
 447                 ql_log(ql_log_warn, vha, 0xa005,
 448                     "scsi_host_alloc() failed for vport.\n");
 449                 return(NULL);
 450         }
 451
 452         host = vha->host;
 453         fc_vport->dd_data = vha;
 454         /* New host info */
 455         u64_to_wwn(fc_vport->node_name, vha->node_name);
 456         u64_to_wwn(fc_vport->port_name, vha->port_name);
 457
 458         vha->fc_vport = fc_vport;
 459         vha->device_flags = 0;
 460         vha->vp_idx = qla24xx_allocate_vp_id(vha);
 461         if (vha->vp_idx > ha->max_npiv_vports) {
 462                 ql_dbg(ql_dbg_vport, vha, 0xa006,
 463                     "Couldn't allocate vp_id.\n");
 464                 goto create_vhost_failed;
 465         }
 466         vha->mgmt_svr_loop_id = 10 + vha->vp_idx;
 467
 468         vha->dpc_flags = 0L;
 469
 470         /*
 471          * To fix the issue of processing a parent's RSCN for the vport before
 472          * its SCR is complete.
 473          */
 474         set_bit(VP_SCR_NEEDED, &vha->vp_flags);
 475         atomic_set(&vha->loop_state, LOOP_DOWN);
 476         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 477
 478         qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);
 479
 480         vha->req = base_vha->req;
 481         host->can_queue = base_vha->req->length + 128;
 482         host->cmd_per_lun = 3;
 483         if (IS_T10_PI_CAPABLE(ha) && ql2xenabledif)
 484                 host->max_cmd_len = 32;
 485         else
 486                 host->max_cmd_len = MAX_CMDSZ;
 487         host->max_channel = MAX_BUSES - 1;
 488         host->max_lun = ql2xmaxlun;
 489         host->unique_id = host->host_no;
 490         host->max_id = ha->max_fibre_devices;
 491         host->transportt = qla2xxx_transport_vport_template;
 492
 493         ql_dbg(ql_dbg_vport, vha, 0xa007,
 494             "Detect vport hba %ld at address = %p.\n",
 495             vha->host_no, vha);
 496
 497         vha->flags.init_done = 1;
 498
 499         mutex_lock(&ha->vport_lock);
 500         set_bit(vha->vp_idx, ha->vp_idx_map);
 501         ha->cur_vport_count++;
 502         mutex_unlock(&ha->vport_lock);
 503
 504         return vha;
 505
 506 create_vhost_failed:
 507         return NULL;
 508 }
 509
 510 static void
 511 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req)
 512 {
 513         struct qla_hw_data *ha = vha->hw;
 514         uint16_t que_id = req->id;
 515
 516         dma_free_coherent(&ha->pdev->dev, (req->length + 1) *
 517                 sizeof(request_t), req->ring, req->dma);
 518         req->ring = NULL;
 519         req->dma = 0;
 520         if (que_id) {
 521                 ha->req_q_map[que_id] = NULL;
 522                 mutex_lock(&ha->vport_lock);
 523                 clear_bit(que_id, ha->req_qid_map);
 524                 mutex_unlock(&ha->vport_lock);
 525         }
 526         kfree(req);
 527         req = NULL;
 528 }
 529
 530 static void
 531 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 532 {
 533         struct qla_hw_data *ha = vha->hw;
 534         uint16_t que_id = rsp->id;
 535
 536         if (rsp->msix && rsp->msix->have_irq) {
 537                 free_irq(rsp->msix->vector, rsp);
 538                 rsp->msix->have_irq = 0;
 539                 rsp->msix->rsp = NULL;
 540         }
 541         dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) *
 542                 sizeof(response_t), rsp->ring, rsp->dma);
 543         rsp->ring = NULL;
 544         rsp->dma = 0;
 545         if (que_id) {
 546                 ha->rsp_q_map[que_id] = NULL;
 547                 mutex_lock(&ha->vport_lock);
 548                 clear_bit(que_id, ha->rsp_qid_map);
 549                 mutex_unlock(&ha->vport_lock);
 550         }
 551         kfree(rsp);
 552         rsp = NULL;
 553 }
 554
 555 int
 556 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
 557 {
 558         int ret = -1;
 559
 560         if (req) {
 561                 req->options |= BIT_0;
 562                 ret = qla25xx_init_req_que(vha, req);
 563         }
 564         if (ret == QLA_SUCCESS)
 565                 qla25xx_free_req_que(vha, req);
 566
 567         return ret;
 568 }
 569
 570 static int
 571 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 572 {
 573         int ret = -1;
 574
 575         if (rsp) {
 576                 rsp->options |= BIT_0;
 577                 ret = qla25xx_init_rsp_que(vha, rsp);
 578         }
 579         if (ret == QLA_SUCCESS)
 580                 qla25xx_free_rsp_que(vha, rsp);
 581
 582         return ret;
 583 }
 584
 585 /* Delete all queues for a given vhost */
 586 int
 587 qla25xx_delete_queues(struct scsi_qla_host *vha)
 588 {
 589         int cnt, ret = 0;
 590         struct req_que *req = NULL;
 591         struct rsp_que *rsp = NULL;
 592         struct qla_hw_data *ha = vha->hw;
 593
 594         /* Delete request queues */
 595         for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
 596                 req = ha->req_q_map[cnt];
 597                 if (req) {
 598                         ret = qla25xx_delete_req_que(vha, req);
 599                         if (ret != QLA_SUCCESS) {
 600                                 ql_log(ql_log_warn, vha, 0x00ea,
 601                                     "Couldn't delete req que %d.\n",
 602                                     req->id);
 603                                 return ret;
 604                         }
 605                 }
 606         }
 607
 608         /* Delete response queues */
 609         for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) {
 610                 rsp = ha->rsp_q_map[cnt];
 611                 if (rsp) {
 612                         ret = qla25xx_delete_rsp_que(vha, rsp);
 613                         if (ret != QLA_SUCCESS) {
 614                                 ql_log(ql_log_warn, vha, 0x00eb,
 615                                     "Couldn't delete rsp que %d.\n",
 616                                     rsp->id);
 617                                 return ret;
 618                         }
 619                 }
 620         }
 621         return ret;
 622 }
 623
 624 int
 625 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
 626         uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos)
 627 {
 628         int ret = 0;
 629         struct req_que *req = NULL;
 630         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 631         uint16_t que_id = 0;
 632         device_reg_t __iomem *reg;
 633         uint32_t cnt;
 634
 635         req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
 636         if (req == NULL) {
 637                 ql_log(ql_log_fatal, base_vha, 0x00d9,
 638                     "Failed to allocate memory for request queue.\n");
 639                 goto failed;
 640         }
 641
 642         req->length = REQUEST_ENTRY_CNT_24XX;
 643         req->ring = dma_alloc_coherent(&ha->pdev->dev,
 644                         (req->length + 1) * sizeof(request_t),
 645                         &req->dma, GFP_KERNEL);
 646         if (req->ring == NULL) {
 647                 ql_log(ql_log_fatal, base_vha, 0x00da,
 648                     "Failed to allocate memory for request_ring.\n");
 649                 goto que_failed;
 650         }
 651
 652         mutex_lock(&ha->vport_lock);
 653         que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues);
 654         if (que_id >= ha->max_req_queues) {
 655                 mutex_unlock(&ha->vport_lock);
 656                 ql_log(ql_log_warn, base_vha, 0x00db,
 657                     "No resources to create additional request queue.\n");
 658                 goto que_failed;
 659         }
 660         set_bit(que_id, ha->req_qid_map);
 661         ha->req_q_map[que_id] = req;
 662         req->rid = rid;
 663         req->vp_idx = vp_idx;
 664         req->qos = qos;
 665
 666         ql_dbg(ql_dbg_multiq, base_vha, 0xc002,
 667             "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
 668             que_id, req->rid, req->vp_idx, req->qos);
 669         ql_dbg(ql_dbg_init, base_vha, 0x00dc,
 670             "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
 671             que_id, req->rid, req->vp_idx, req->qos);
 672         if (rsp_que < 0)
 673                 req->rsp = NULL;
 674         else
 675                 req->rsp = ha->rsp_q_map[rsp_que];
 676         /* Use alternate PCI bus number */
 677         if (MSB(req->rid))
 678                 options |= BIT_4;
 679         /* Use alternate PCI devfn */
 680         if (LSB(req->rid))
 681                 options |= BIT_5;
 682         req->options = options;
 683
 684         ql_dbg(ql_dbg_multiq, base_vha, 0xc003,
 685             "options=0x%x.\n", req->options);
 686         ql_dbg(ql_dbg_init, base_vha, 0x00dd,
 687             "options=0x%x.\n", req->options);
 688         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++)
 689                 req->outstanding_cmds[cnt] = NULL;
 690         req->current_outstanding_cmd = 1;
 691
 692         req->ring_ptr = req->ring;
 693         req->ring_index = 0;
 694         req->cnt = req->length;
 695         req->id = que_id;
 696         reg = ISP_QUE_REG(ha, que_id);
 697         req->max_q_depth = ha->req_q_map[0]->max_q_depth;
 698         mutex_unlock(&ha->vport_lock);
 699         ql_dbg(ql_dbg_multiq, base_vha, 0xc004,
 700             "ring_ptr=%p ring_index=%d, "
 701             "cnt=%d id=%d max_q_depth=%d.\n",
 702             req->ring_ptr, req->ring_index,
 703             req->cnt, req->id, req->max_q_depth);
 704         ql_dbg(ql_dbg_init, base_vha, 0x00de,
 705             "ring_ptr=%p ring_index=%d, "
 706             "cnt=%d id=%d max_q_depth=%d.\n",
 707             req->ring_ptr, req->ring_index, req->cnt,
 708             req->id, req->max_q_depth);
 709
 710         ret = qla25xx_init_req_que(base_vha, req);
 711         if (ret != QLA_SUCCESS) {
 712                 ql_log(ql_log_fatal, base_vha, 0x00df,
 713                     "%s failed.\n", __func__);
 714                 mutex_lock(&ha->vport_lock);
 715                 clear_bit(que_id, ha->req_qid_map);
 716                 mutex_unlock(&ha->vport_lock);
 717                 goto que_failed;
 718         }
 719
 720         return req->id;
 721
 722 que_failed:
 723         qla25xx_free_req_que(base_vha, req);
 724 failed:
 725         return 0;
 726 }
 727
 728 static void qla_do_work(struct work_struct *work)
 729 {
 730         unsigned long flags;
 731         struct rsp_que *rsp = container_of(work, struct rsp_que, q_work);
 732         struct scsi_qla_host *vha;
 733         struct qla_hw_data *ha = rsp->hw;
 734
 735         spin_lock_irqsave(&rsp->hw->hardware_lock, flags);
 736         vha = pci_get_drvdata(ha->pdev);
 737         qla24xx_process_response_queue(vha, rsp);
 738         spin_unlock_irqrestore(&rsp->hw->hardware_lock, flags);
 739 }
 740
 741 /* create response queue */
 742 int
 743 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
 744         uint8_t vp_idx, uint16_t rid, int req)
 745 {
 746         int ret = 0;
 747         struct rsp_que *rsp = NULL;
 748         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 749         uint16_t que_id = 0;
 750         device_reg_t __iomem *reg;
 751
 752         rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
 753         if (rsp == NULL) {
 754                 ql_log(ql_log_warn, base_vha, 0x0066,
 755                     "Failed to allocate memory for response queue.\n");
 756                 goto failed;
 757         }
 758
 759         rsp->length = RESPONSE_ENTRY_CNT_MQ;
 760         rsp->ring = dma_alloc_coherent(&ha->pdev->dev,
 761                         (rsp->length + 1) * sizeof(response_t),
 762                         &rsp->dma, GFP_KERNEL);
 763         if (rsp->ring == NULL) {
 764                 ql_log(ql_log_warn, base_vha, 0x00e1,
 765                     "Failed to allocate memory for response ring.\n");
 766                 goto que_failed;
 767         }
 768
 769         mutex_lock(&ha->vport_lock);
 770         que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues);
 771         if (que_id >= ha->max_rsp_queues) {
 772                 mutex_unlock(&ha->vport_lock);
 773                 ql_log(ql_log_warn, base_vha, 0x00e2,
 774                     "No resources to create additional request queue.\n");
 775                 goto que_failed;
 776         }
 777         set_bit(que_id, ha->rsp_qid_map);
 778
 779         if (ha->flags.msix_enabled)
 780                 rsp->msix = &ha->msix_entries[que_id + 1];
 781         else
 782                 ql_log(ql_log_warn, base_vha, 0x00e3,
 783                     "MSIX not enalbled.\n");
 784
 785         ha->rsp_q_map[que_id] = rsp;
 786         rsp->rid = rid;
 787         rsp->vp_idx = vp_idx;
 788         rsp->hw = ha;
 789         ql_dbg(ql_dbg_init, base_vha, 0x00e4,
 790             "queue_id=%d rid=%d vp_idx=%d hw=%p.\n",
 791             que_id, rsp->rid, rsp->vp_idx, rsp->hw);
 792         /* Use alternate PCI bus number */
 793         if (MSB(rsp->rid))
 794                 options |= BIT_4;
 795         /* Use alternate PCI devfn */
 796         if (LSB(rsp->rid))
 797                 options |= BIT_5;
 798         /* Enable MSIX handshake mode on for uncapable adapters */
 799         if (!IS_MSIX_NACK_CAPABLE(ha))
 800                 options |= BIT_6;
 801
 802         rsp->options = options;
 803         rsp->id = que_id;
 804         reg = ISP_QUE_REG(ha, que_id);
 805         rsp->rsp_q_in = &reg->isp25mq.rsp_q_in;
 806         rsp->rsp_q_out = &reg->isp25mq.rsp_q_out;
 807         mutex_unlock(&ha->vport_lock);
 808         ql_dbg(ql_dbg_multiq, base_vha, 0xc00b,
 809             "options=%x id=%d rsp_q_in=%p rsp_q_out=%p",
 810             rsp->options, rsp->id, rsp->rsp_q_in,
 811             rsp->rsp_q_out);
 812         ql_dbg(ql_dbg_init, base_vha, 0x00e5,
 813             "options=%x id=%d rsp_q_in=%p rsp_q_out=%p",
 814             rsp->options, rsp->id, rsp->rsp_q_in,
 815             rsp->rsp_q_out);
 816
 817         ret = qla25xx_request_irq(rsp);
 818         if (ret)
 819                 goto que_failed;
 820
 821         ret = qla25xx_init_rsp_que(base_vha, rsp);
 822         if (ret != QLA_SUCCESS) {
 823                 ql_log(ql_log_fatal, base_vha, 0x00e7,
 824                     "%s failed.\n", __func__);
 825                 mutex_lock(&ha->vport_lock);
 826                 clear_bit(que_id, ha->rsp_qid_map);
 827                 mutex_unlock(&ha->vport_lock);
 828                 goto que_failed;
 829         }
 830         if (req >= 0)
 831                 rsp->req = ha->req_q_map[req];
 832         else
 833                 rsp->req = NULL;
 834
 835         qla2x00_init_response_q_entries(rsp);
 836         if (rsp->hw->wq)
 837                 INIT_WORK(&rsp->q_work, qla_do_work);
 838         return rsp->id;
 839
 840 que_failed:
 841         qla25xx_free_rsp_que(base_vha, rsp);
 842 failed:
 843         return 0;
 844 }