drivers/scsi/qla2xxx/qla_mid.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2011 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8 #include "qla_gbl.h"
   9
  10 #include <linux/moduleparam.h>
  11 #include <linux/vmalloc.h>
  12 #include <linux/slab.h>
  13 #include <linux/list.h>
  14
  15 #include <scsi/scsi_tcq.h>
  16 #include <scsi/scsicam.h>
  17 #include <linux/delay.h>
  18
  19 void
  20 qla2x00_vp_stop_timer(scsi_qla_host_t *vha)
  21 {
  22         if (vha->vp_idx && vha->timer_active) {
  23                 del_timer_sync(&vha->timer);
  24                 vha->timer_active = 0;
  25         }
  26 }
  27
  28 static uint32_t
  29 qla24xx_allocate_vp_id(scsi_qla_host_t *vha)
  30 {
  31         uint32_t vp_id;
  32         struct qla_hw_data *ha = vha->hw;
  33         unsigned long flags;
  34
  35         /* Find an empty slot and assign an vp_id */
  36         mutex_lock(&ha->vport_lock);
  37         vp_id = find_first_zero_bit(ha->vp_idx_map, ha->max_npiv_vports + 1);
  38         if (vp_id > ha->max_npiv_vports) {
  39                 ql_dbg(ql_dbg_vport, vha, 0xa000,
  40                     "vp_id %d is bigger than max-supported %d.\n",
  41                     vp_id, ha->max_npiv_vports);
  42                 mutex_unlock(&ha->vport_lock);
  43                 return vp_id;
  44         }
  45
  46         set_bit(vp_id, ha->vp_idx_map);
  47         ha->num_vhosts++;
  48         vha->vp_idx = vp_id;
  49
  50         spin_lock_irqsave(&ha->vport_slock, flags);
  51         list_add_tail(&vha->list, &ha->vp_list);
  52         spin_unlock_irqrestore(&ha->vport_slock, flags);
  53
  54         mutex_unlock(&ha->vport_lock);
  55         return vp_id;
  56 }
  57
  58 void
  59 qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
  60 {
  61         uint16_t vp_id;
  62         struct qla_hw_data *ha = vha->hw;
  63         unsigned long flags = 0;
  64
  65         mutex_lock(&ha->vport_lock);
  66         /*
  67          * Wait for all pending activities to finish before removing vport from
  68          * the list.
  69          * Lock needs to be held for safe removal from the list (it
  70          * ensures no active vp_list traversal while the vport is removed
  71          * from the queue)
  72          */
  73         spin_lock_irqsave(&ha->vport_slock, flags);
  74         while (atomic_read(&vha->vref_count)) {
  75                 spin_unlock_irqrestore(&ha->vport_slock, flags);
  76
  77                 msleep(500);
  78
  79                 spin_lock_irqsave(&ha->vport_slock, flags);
  80         }
  81         list_del(&vha->list);
  82         spin_unlock_irqrestore(&ha->vport_slock, flags);
  83
  84         vp_id = vha->vp_idx;
  85         ha->num_vhosts--;
  86         clear_bit(vp_id, ha->vp_idx_map);
  87
  88         mutex_unlock(&ha->vport_lock);
  89 }
  90
  91 static scsi_qla_host_t *
  92 qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name)
  93 {
  94         scsi_qla_host_t *vha;
  95         struct scsi_qla_host *tvha;
  96         unsigned long flags;
  97
  98         spin_lock_irqsave(&ha->vport_slock, flags);
  99         /* Locate matching device in database. */
 100         list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
 101                 if (!memcmp(port_name, vha->port_name, WWN_SIZE)) {
 102                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 103                         return vha;
 104                 }
 105         }
 106         spin_unlock_irqrestore(&ha->vport_slock, flags);
 107         return NULL;
 108 }
 109
 110 /*
 111  * qla2x00_mark_vp_devices_dead
 112  *      Updates fcport state when device goes offline.
 113  *
 114  * Input:
 115  *      ha = adapter block pointer.
 116  *      fcport = port structure pointer.
 117  *
 118  * Return:
 119  *      None.
 120  *
 121  * Context:
 122  */
 123 static void
 124 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
 125 {
 126         /*
 127          * !!! NOTE !!!
 128          * This function, if called in contexts other than vp create, disable
 129          * or delete, please make sure this is synchronized with the
 130          * delete thread.
 131          */
 132         fc_port_t *fcport;
 133
 134         list_for_each_entry(fcport, &vha->vp_fcports, list) {
 135                 ql_dbg(ql_dbg_vport, vha, 0xa001,
 136                     "Marking port dead, loop_id=0x%04x : %x.\n",
 137                     fcport->loop_id, fcport->vp_idx);
 138
 139                 qla2x00_mark_device_lost(vha, fcport, 0, 0);
 140                 qla2x00_set_fcport_state(fcport, FCS_UNCONFIGURED);
 141         }
 142 }
 143
 144 int
 145 qla24xx_disable_vp(scsi_qla_host_t *vha)
 146 {
 147         int ret;
 148
 149         ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 150         atomic_set(&vha->loop_state, LOOP_DOWN);
 151         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 152
 153         qla2x00_mark_vp_devices_dead(vha);
 154         atomic_set(&vha->vp_state, VP_FAILED);
 155         vha->flags.management_server_logged_in = 0;
 156         if (ret == QLA_SUCCESS) {
 157                 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
 158         } else {
 159                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 160                 return -1;
 161         }
 162         return 0;
 163 }
 164
 165 int
 166 qla24xx_enable_vp(scsi_qla_host_t *vha)
 167 {
 168         int ret;
 169         struct qla_hw_data *ha = vha->hw;
 170         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 171
 172         /* Check if physical ha port is Up */
 173         if (atomic_read(&base_vha->loop_state) == LOOP_DOWN  ||
 174                 atomic_read(&base_vha->loop_state) == LOOP_DEAD ||
 175                 !(ha->current_topology & ISP_CFG_F)) {
 176                 vha->vp_err_state =  VP_ERR_PORTDWN;
 177                 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
 178                 goto enable_failed;
 179         }
 180
 181         /* Initialize the new vport unless it is a persistent port */
 182         mutex_lock(&ha->vport_lock);
 183         ret = qla24xx_modify_vp_config(vha);
 184         mutex_unlock(&ha->vport_lock);
 185
 186         if (ret != QLA_SUCCESS) {
 187                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 188                 goto enable_failed;
 189         }
 190
 191         ql_dbg(ql_dbg_taskm, vha, 0x801a,
 192             "Virtual port with id: %d - Enabled.\n", vha->vp_idx);
 193         return 0;
 194
 195 enable_failed:
 196         ql_dbg(ql_dbg_taskm, vha, 0x801b,
 197             "Virtual port with id: %d - Disabled.\n", vha->vp_idx);
 198         return 1;
 199 }
 200
 201 static void
 202 qla24xx_configure_vp(scsi_qla_host_t *vha)
 203 {
 204         struct fc_vport *fc_vport;
 205         int ret;
 206
 207         fc_vport = vha->fc_vport;
 208
 209         ql_dbg(ql_dbg_vport, vha, 0xa002,
 210             "%s: change request #3.\n", __func__);
 211         ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
 212         if (ret != QLA_SUCCESS) {
 213                 ql_dbg(ql_dbg_vport, vha, 0xa003, "Failed to enable "
 214                     "receiving of RSCN requests: 0x%x.\n", ret);
 215                 return;
 216         } else {
 217                 /* Corresponds to SCR enabled */
 218                 clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
 219         }
 220
 221         vha->flags.online = 1;
 222         if (qla24xx_configure_vhba(vha))
 223                 return;
 224
 225         atomic_set(&vha->vp_state, VP_ACTIVE);
 226         fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
 227 }
 228
 229 void
 230 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
 231 {
 232         scsi_qla_host_t *vha;
 233         struct qla_hw_data *ha = rsp->hw;
 234         int i = 0;
 235         unsigned long flags;
 236
 237         spin_lock_irqsave(&ha->vport_slock, flags);
 238         list_for_each_entry(vha, &ha->vp_list, list) {
 239                 if (vha->vp_idx) {
 240                         atomic_inc(&vha->vref_count);
 241                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 242
 243                         switch (mb[0]) {
 244                         case MBA_LIP_OCCURRED:
 245                         case MBA_LOOP_UP:
 246                         case MBA_LOOP_DOWN:
 247                         case MBA_LIP_RESET:
 248                         case MBA_POINT_TO_POINT:
 249                         case MBA_CHG_IN_CONNECTION:
 250                         case MBA_PORT_UPDATE:
 251                         case MBA_RSCN_UPDATE:
 252                                 ql_dbg(ql_dbg_async, vha, 0x5024,
 253                                     "Async_event for VP[%d], mb=0x%x vha=%p.\n",
 254                                     i, *mb, vha);
 255                                 qla2x00_async_event(vha, rsp, mb);
 256                                 break;
 257                         }
 258
 259                         spin_lock_irqsave(&ha->vport_slock, flags);
 260                         atomic_dec(&vha->vref_count);
 261                 }
 262                 i++;
 263         }
 264         spin_unlock_irqrestore(&ha->vport_slock, flags);
 265 }
 266
 267 int
 268 qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
 269 {
 270         /*
 271          * Physical port will do most of the abort and recovery work. We can
 272          * just treat it as a loop down
 273          */
 274         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 275                 atomic_set(&vha->loop_state, LOOP_DOWN);
 276                 qla2x00_mark_all_devices_lost(vha, 0);
 277         } else {
 278                 if (!atomic_read(&vha->loop_down_timer))
 279                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 280         }
 281
 282         /*
 283          * To exclusively reset vport, we need to log it out first.  Note: this
 284          * control_vp can fail if ISP reset is already issued, this is
 285          * expected, as the vp would be already logged out due to ISP reset.
 286          */
 287         if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
 288                 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 289
 290         ql_dbg(ql_dbg_taskm, vha, 0x801d,
 291             "Scheduling enable of Vport %d.\n", vha->vp_idx);
 292         return qla24xx_enable_vp(vha);
 293 }
 294
 295 static int
 296 qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
 297 {
 298         ql_dbg(ql_dbg_dpc, vha, 0x4012,
 299             "Entering %s.\n", __func__);
 300         ql_dbg(ql_dbg_dpc, vha, 0x4013,
 301             "vp_flags: 0x%lx.\n", vha->vp_flags);
 302
 303         qla2x00_do_work(vha);
 304
 305         if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
 306                 /* VP acquired. complete port configuration */
 307                 ql_dbg(ql_dbg_dpc, vha, 0x4014,
 308                     "Configure VP scheduled.\n");
 309                 qla24xx_configure_vp(vha);
 310                 ql_dbg(ql_dbg_dpc, vha, 0x4015,
 311                     "Configure VP end.\n");
 312                 return 0;
 313         }
 314
 315         if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
 316                 ql_dbg(ql_dbg_dpc, vha, 0x4016,
 317                     "FCPort update scheduled.\n");
 318                 qla2x00_update_fcports(vha);
 319                 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
 320                 ql_dbg(ql_dbg_dpc, vha, 0x4017,
 321                     "FCPort update end.\n");
 322         }
 323
 324         if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) &&
 325                 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
 326                 atomic_read(&vha->loop_state) != LOOP_DOWN) {
 327
 328                 ql_dbg(ql_dbg_dpc, vha, 0x4018,
 329                     "Relogin needed scheduled.\n");
 330                 qla2x00_relogin(vha);
 331                 ql_dbg(ql_dbg_dpc, vha, 0x4019,
 332                     "Relogin needed end.\n");
 333         }
 334
 335         if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
 336             (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
 337                 clear_bit(RESET_ACTIVE, &vha->dpc_flags);
 338         }
 339
 340         if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
 341                 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
 342                         ql_dbg(ql_dbg_dpc, vha, 0x401a,
 343                             "Loop resync scheduled.\n");
 344                         qla2x00_loop_resync(vha);
 345                         clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
 346                         ql_dbg(ql_dbg_dpc, vha, 0x401b,
 347                             "Loop resync end.\n");
 348                 }
 349         }
 350
 351         ql_dbg(ql_dbg_dpc, vha, 0x401c,
 352             "Exiting %s.\n", __func__);
 353         return 0;
 354 }
 355
 356 void
 357 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
 358 {
 359         int ret;
 360         struct qla_hw_data *ha = vha->hw;
 361         scsi_qla_host_t *vp;
 362         unsigned long flags = 0;
 363
 364         if (vha->vp_idx)
 365                 return;
 366         if (list_empty(&ha->vp_list))
 367                 return;
 368
 369         clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);
 370
 371         if (!(ha->current_topology & ISP_CFG_F))
 372                 return;
 373
 374         spin_lock_irqsave(&ha->vport_slock, flags);
 375         list_for_each_entry(vp, &ha->vp_list, list) {
 376                 if (vp->vp_idx) {
 377                         atomic_inc(&vp->vref_count);
 378                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 379
 380                         ret = qla2x00_do_dpc_vp(vp);
 381
 382                         spin_lock_irqsave(&ha->vport_slock, flags);
 383                         atomic_dec(&vp->vref_count);
 384                 }
 385         }
 386         spin_unlock_irqrestore(&ha->vport_slock, flags);
 387 }
 388
 389 int
 390 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
 391 {
 392         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 393         struct qla_hw_data *ha = base_vha->hw;
 394         scsi_qla_host_t *vha;
 395         uint8_t port_name[WWN_SIZE];
 396
 397         if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
 398                 return VPCERR_UNSUPPORTED;
 399
 400         /* Check up the F/W and H/W support NPIV */
 401         if (!ha->flags.npiv_supported)
 402                 return VPCERR_UNSUPPORTED;
 403
 404         /* Check up whether npiv supported switch presented */
 405         if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
 406                 return VPCERR_NO_FABRIC_SUPP;
 407
 408         /* Check up unique WWPN */
 409         u64_to_wwn(fc_vport->port_name, port_name);
 410         if (!memcmp(port_name, base_vha->port_name, WWN_SIZE))
 411                 return VPCERR_BAD_WWN;
 412         vha = qla24xx_find_vhost_by_name(ha, port_name);
 413         if (vha)
 414                 return VPCERR_BAD_WWN;
 415
 416         /* Check up max-npiv-supports */
 417         if (ha->num_vhosts > ha->max_npiv_vports) {
 418                 ql_dbg(ql_dbg_vport, vha, 0xa004,
 419                     "num_vhosts %ud is bigger "
 420                     "than max_npiv_vports %ud.\n",
 421                     ha->num_vhosts, ha->max_npiv_vports);
 422                 return VPCERR_UNSUPPORTED;
 423         }
 424         return 0;
 425 }
 426
 427 scsi_qla_host_t *
 428 qla24xx_create_vhost(struct fc_vport *fc_vport)
 429 {
 430         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 431         struct qla_hw_data *ha = base_vha->hw;
 432         scsi_qla_host_t *vha;
 433         struct scsi_host_template *sht = &qla2xxx_driver_template;
 434         struct Scsi_Host *host;
 435
 436         vha = qla2x00_create_host(sht, ha);
 437         if (!vha) {
 438                 ql_log(ql_log_warn, vha, 0xa005,
 439                     "scsi_host_alloc() failed for vport.\n");
 440                 return(NULL);
 441         }
 442
 443         host = vha->host;
 444         fc_vport->dd_data = vha;
 445         /* New host info */
 446         u64_to_wwn(fc_vport->node_name, vha->node_name);
 447         u64_to_wwn(fc_vport->port_name, vha->port_name);
 448
 449         vha->fc_vport = fc_vport;
 450         vha->device_flags = 0;
 451         vha->vp_idx = qla24xx_allocate_vp_id(vha);
 452         if (vha->vp_idx > ha->max_npiv_vports) {
 453                 ql_dbg(ql_dbg_vport, vha, 0xa006,
 454                     "Couldn't allocate vp_id.\n");
 455                 goto create_vhost_failed;
 456         }
 457         vha->mgmt_svr_loop_id = 10 + vha->vp_idx;
 458
 459         vha->dpc_flags = 0L;
 460
 461         /*
 462          * To fix the issue of processing a parent's RSCN for the vport before
 463          * its SCR is complete.
 464          */
 465         set_bit(VP_SCR_NEEDED, &vha->vp_flags);
 466         atomic_set(&vha->loop_state, LOOP_DOWN);
 467         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 468
 469         qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);
 470
 471         vha->req = base_vha->req;
 472         host->can_queue = base_vha->req->length + 128;
 473         host->this_id = 255;
 474         host->cmd_per_lun = 3;
 475         if (IS_T10_PI_CAPABLE(ha) && ql2xenabledif)
 476                 host->max_cmd_len = 32;
 477         else
 478                 host->max_cmd_len = MAX_CMDSZ;
 479         host->max_channel = MAX_BUSES - 1;
 480         host->max_lun = ql2xmaxlun;
 481         host->unique_id = host->host_no;
 482         host->max_id = MAX_TARGETS_2200;
 483         host->transportt = qla2xxx_transport_vport_template;
 484
 485         ql_dbg(ql_dbg_vport, vha, 0xa007,
 486             "Detect vport hba %ld at address = %p.\n",
 487             vha->host_no, vha);
 488
 489         vha->flags.init_done = 1;
 490
 491         mutex_lock(&ha->vport_lock);
 492         set_bit(vha->vp_idx, ha->vp_idx_map);
 493         ha->cur_vport_count++;
 494         mutex_unlock(&ha->vport_lock);
 495
 496         return vha;
 497
 498 create_vhost_failed:
 499         return NULL;
 500 }
 501
 502 static void
 503 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req)
 504 {
 505         struct qla_hw_data *ha = vha->hw;
 506         uint16_t que_id = req->id;
 507
 508         dma_free_coherent(&ha->pdev->dev, (req->length + 1) *
 509                 sizeof(request_t), req->ring, req->dma);
 510         req->ring = NULL;
 511         req->dma = 0;
 512         if (que_id) {
 513                 ha->req_q_map[que_id] = NULL;
 514                 mutex_lock(&ha->vport_lock);
 515                 clear_bit(que_id, ha->req_qid_map);
 516                 mutex_unlock(&ha->vport_lock);
 517         }
 518         kfree(req);
 519         req = NULL;
 520 }
 521
 522 static void
 523 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 524 {
 525         struct qla_hw_data *ha = vha->hw;
 526         uint16_t que_id = rsp->id;
 527
 528         if (rsp->msix && rsp->msix->have_irq) {
 529                 free_irq(rsp->msix->vector, rsp);
 530                 rsp->msix->have_irq = 0;
 531                 rsp->msix->rsp = NULL;
 532         }
 533         dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) *
 534                 sizeof(response_t), rsp->ring, rsp->dma);
 535         rsp->ring = NULL;
 536         rsp->dma = 0;
 537         if (que_id) {
 538                 ha->rsp_q_map[que_id] = NULL;
 539                 mutex_lock(&ha->vport_lock);
 540                 clear_bit(que_id, ha->rsp_qid_map);
 541                 mutex_unlock(&ha->vport_lock);
 542         }
 543         kfree(rsp);
 544         rsp = NULL;
 545 }
 546
 547 int
 548 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
 549 {
 550         int ret = -1;
 551
 552         if (req) {
 553                 req->options |= BIT_0;
 554                 ret = qla25xx_init_req_que(vha, req);
 555         }
 556         if (ret == QLA_SUCCESS)
 557                 qla25xx_free_req_que(vha, req);
 558
 559         return ret;
 560 }
 561
 562 static int
 563 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 564 {
 565         int ret = -1;
 566
 567         if (rsp) {
 568                 rsp->options |= BIT_0;
 569                 ret = qla25xx_init_rsp_que(vha, rsp);
 570         }
 571         if (ret == QLA_SUCCESS)
 572                 qla25xx_free_rsp_que(vha, rsp);
 573
 574         return ret;
 575 }
 576
 577 /* Delete all queues for a given vhost */
 578 int
 579 qla25xx_delete_queues(struct scsi_qla_host *vha)
 580 {
 581         int cnt, ret = 0;
 582         struct req_que *req = NULL;
 583         struct rsp_que *rsp = NULL;
 584         struct qla_hw_data *ha = vha->hw;
 585
 586         /* Delete request queues */
 587         for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
 588                 req = ha->req_q_map[cnt];
 589                 if (req) {
 590                         ret = qla25xx_delete_req_que(vha, req);
 591                         if (ret != QLA_SUCCESS) {
 592                                 ql_log(ql_log_warn, vha, 0x00ea,
 593                                     "Couldn't delete req que %d.\n",
 594                                     req->id);
 595                                 return ret;
 596                         }
 597                 }
 598         }
 599
 600         /* Delete response queues */
 601         for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) {
 602                 rsp = ha->rsp_q_map[cnt];
 603                 if (rsp) {
 604                         ret = qla25xx_delete_rsp_que(vha, rsp);
 605                         if (ret != QLA_SUCCESS) {
 606                                 ql_log(ql_log_warn, vha, 0x00eb,
 607                                     "Couldn't delete rsp que %d.\n",
 608                                     rsp->id);
 609                                 return ret;
 610                         }
 611                 }
 612         }
 613         return ret;
 614 }
 615
 616 int
 617 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
 618         uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos)
 619 {
 620         int ret = 0;
 621         struct req_que *req = NULL;
 622         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 623         uint16_t que_id = 0;
 624         device_reg_t __iomem *reg;
 625         uint32_t cnt;
 626
 627         req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
 628         if (req == NULL) {
 629                 ql_log(ql_log_fatal, base_vha, 0x00d9,
 630                     "Failed to allocate memory for request queue.\n");
 631                 goto failed;
 632         }
 633
 634         req->length = REQUEST_ENTRY_CNT_24XX;
 635         req->ring = dma_alloc_coherent(&ha->pdev->dev,
 636                         (req->length + 1) * sizeof(request_t),
 637                         &req->dma, GFP_KERNEL);
 638         if (req->ring == NULL) {
 639                 ql_log(ql_log_fatal, base_vha, 0x00da,
 640                     "Failed to allocte memory for request_ring.\n");
 641                 goto que_failed;
 642         }
 643
 644         mutex_lock(&ha->vport_lock);
 645         que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues);
 646         if (que_id >= ha->max_req_queues) {
 647                 mutex_unlock(&ha->vport_lock);
 648                 ql_log(ql_log_warn, base_vha, 0x00db,
 649                     "No resources to create additional request queue.\n");
 650                 goto que_failed;
 651         }
 652         set_bit(que_id, ha->req_qid_map);
 653         ha->req_q_map[que_id] = req;
 654         req->rid = rid;
 655         req->vp_idx = vp_idx;
 656         req->qos = qos;
 657
 658         ql_dbg(ql_dbg_multiq, base_vha, 0xc002,
 659             "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
 660             que_id, req->rid, req->vp_idx, req->qos);
 661         ql_dbg(ql_dbg_init, base_vha, 0x00dc,
 662             "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
 663             que_id, req->rid, req->vp_idx, req->qos);
 664         if (rsp_que < 0)
 665                 req->rsp = NULL;
 666         else
 667                 req->rsp = ha->rsp_q_map[rsp_que];
 668         /* Use alternate PCI bus number */
 669         if (MSB(req->rid))
 670                 options |= BIT_4;
 671         /* Use alternate PCI devfn */
 672         if (LSB(req->rid))
 673                 options |= BIT_5;
 674         req->options = options;
 675
 676         ql_dbg(ql_dbg_multiq, base_vha, 0xc003,
 677             "options=0x%x.\n", req->options);
 678         ql_dbg(ql_dbg_init, base_vha, 0x00dd,
 679             "options=0x%x.\n", req->options);
 680         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++)
 681                 req->outstanding_cmds[cnt] = NULL;
 682         req->current_outstanding_cmd = 1;
 683
 684         req->ring_ptr = req->ring;
 685         req->ring_index = 0;
 686         req->cnt = req->length;
 687         req->id = que_id;
 688         reg = ISP_QUE_REG(ha, que_id);
 689         req->max_q_depth = ha->req_q_map[0]->max_q_depth;
 690         mutex_unlock(&ha->vport_lock);
 691         ql_dbg(ql_dbg_multiq, base_vha, 0xc004,
 692             "ring_ptr=%p ring_index=%d, "
 693             "cnt=%d id=%d max_q_depth=%d.\n",
 694             req->ring_ptr, req->ring_index,
 695             req->cnt, req->id, req->max_q_depth);
 696         ql_dbg(ql_dbg_init, base_vha, 0x00de,
 697             "ring_ptr=%p ring_index=%d, "
 698             "cnt=%d id=%d max_q_depth=%d.\n",
 699             req->ring_ptr, req->ring_index, req->cnt,
 700             req->id, req->max_q_depth);
 701
 702         ret = qla25xx_init_req_que(base_vha, req);
 703         if (ret != QLA_SUCCESS) {
 704                 ql_log(ql_log_fatal, base_vha, 0x00df,
 705                     "%s failed.\n", __func__);
 706                 mutex_lock(&ha->vport_lock);
 707                 clear_bit(que_id, ha->req_qid_map);
 708                 mutex_unlock(&ha->vport_lock);
 709                 goto que_failed;
 710         }
 711
 712         return req->id;
 713
 714 que_failed:
 715         qla25xx_free_req_que(base_vha, req);
 716 failed:
 717         return 0;
 718 }
 719
 720 static void qla_do_work(struct work_struct *work)
 721 {
 722         unsigned long flags;
 723         struct rsp_que *rsp = container_of(work, struct rsp_que, q_work);
 724         struct scsi_qla_host *vha;
 725         struct qla_hw_data *ha = rsp->hw;
 726
 727         spin_lock_irqsave(&rsp->hw->hardware_lock, flags);
 728         vha = pci_get_drvdata(ha->pdev);
 729         qla24xx_process_response_queue(vha, rsp);
 730         spin_unlock_irqrestore(&rsp->hw->hardware_lock, flags);
 731 }
 732
 733 /* create response queue */
 734 int
 735 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
 736         uint8_t vp_idx, uint16_t rid, int req)
 737 {
 738         int ret = 0;
 739         struct rsp_que *rsp = NULL;
 740         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 741         uint16_t que_id = 0;
 742         device_reg_t __iomem *reg;
 743
 744         rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
 745         if (rsp == NULL) {
 746                 ql_log(ql_log_warn, base_vha, 0x0066,
 747                     "Failed to allocate memory for response queue.\n");
 748                 goto failed;
 749         }
 750
 751         rsp->length = RESPONSE_ENTRY_CNT_MQ;
 752         rsp->ring = dma_alloc_coherent(&ha->pdev->dev,
 753                         (rsp->length + 1) * sizeof(response_t),
 754                         &rsp->dma, GFP_KERNEL);
 755         if (rsp->ring == NULL) {
 756                 ql_log(ql_log_warn, base_vha, 0x00e1,
 757                     "Failed to allocate memory for response ring.\n");
 758                 goto que_failed;
 759         }
 760
 761         mutex_lock(&ha->vport_lock);
 762         que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues);
 763         if (que_id >= ha->max_rsp_queues) {
 764                 mutex_unlock(&ha->vport_lock);
 765                 ql_log(ql_log_warn, base_vha, 0x00e2,
 766                     "No resources to create additional request queue.\n");
 767                 goto que_failed;
 768         }
 769         set_bit(que_id, ha->rsp_qid_map);
 770
 771         if (ha->flags.msix_enabled)
 772                 rsp->msix = &ha->msix_entries[que_id + 1];
 773         else
 774                 ql_log(ql_log_warn, base_vha, 0x00e3,
 775                     "MSIX not enalbled.\n");
 776
 777         ha->rsp_q_map[que_id] = rsp;
 778         rsp->rid = rid;
 779         rsp->vp_idx = vp_idx;
 780         rsp->hw = ha;
 781         ql_dbg(ql_dbg_init, base_vha, 0x00e4,
 782             "queue_id=%d rid=%d vp_idx=%d hw=%p.\n",
 783             que_id, rsp->rid, rsp->vp_idx, rsp->hw);
 784         /* Use alternate PCI bus number */
 785         if (MSB(rsp->rid))
 786                 options |= BIT_4;
 787         /* Use alternate PCI devfn */
 788         if (LSB(rsp->rid))
 789                 options |= BIT_5;
 790         /* Enable MSIX handshake mode on for uncapable adapters */
 791         if (!IS_MSIX_NACK_CAPABLE(ha))
 792                 options |= BIT_6;
 793
 794         rsp->options = options;
 795         rsp->id = que_id;
 796         reg = ISP_QUE_REG(ha, que_id);
 797         rsp->rsp_q_in = &reg->isp25mq.rsp_q_in;
 798         rsp->rsp_q_out = &reg->isp25mq.rsp_q_out;
 799         mutex_unlock(&ha->vport_lock);
 800         ql_dbg(ql_dbg_multiq, base_vha, 0xc00b,
 801             "options=%x id=%d rsp_q_in=%p rsp_q_out=%p",
 802             rsp->options, rsp->id, rsp->rsp_q_in,
 803             rsp->rsp_q_out);
 804         ql_dbg(ql_dbg_init, base_vha, 0x00e5,
 805             "options=%x id=%d rsp_q_in=%p rsp_q_out=%p",
 806             rsp->options, rsp->id, rsp->rsp_q_in,
 807             rsp->rsp_q_out);
 808
 809         ret = qla25xx_request_irq(rsp);
 810         if (ret)
 811                 goto que_failed;
 812
 813         ret = qla25xx_init_rsp_que(base_vha, rsp);
 814         if (ret != QLA_SUCCESS) {
 815                 ql_log(ql_log_fatal, base_vha, 0x00e7,
 816                     "%s failed.\n", __func__);
 817                 mutex_lock(&ha->vport_lock);
 818                 clear_bit(que_id, ha->rsp_qid_map);
 819                 mutex_unlock(&ha->vport_lock);
 820                 goto que_failed;
 821         }
 822         if (req >= 0)
 823                 rsp->req = ha->req_q_map[req];
 824         else
 825                 rsp->req = NULL;
 826
 827         qla2x00_init_response_q_entries(rsp);
 828         if (rsp->hw->wq)
 829                 INIT_WORK(&rsp->q_work, qla_do_work);
 830         return rsp->id;
 831
 832 que_failed:
 833         qla25xx_free_rsp_que(base_vha, rsp);
 834 failed:
 835         return 0;
 836 }