drivers/scsi/qla2xxx/qla_mid.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2008 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/list.h>
  13
  14 #include <scsi/scsi_tcq.h>
  15 #include <scsi/scsicam.h>
  16 #include <linux/delay.h>
  17
  18 void
  19 qla2x00_vp_stop_timer(scsi_qla_host_t *vha)
  20 {
  21         if (vha->vp_idx && vha->timer_active) {
  22                 del_timer_sync(&vha->timer);
  23                 vha->timer_active = 0;
  24         }
  25 }
  26
  27 static uint32_t
  28 qla24xx_allocate_vp_id(scsi_qla_host_t *vha)
  29 {
  30         uint32_t vp_id;
  31         struct qla_hw_data *ha = vha->hw;
  32
  33         /* Find an empty slot and assign an vp_id */
  34         mutex_lock(&ha->vport_lock);
  35         vp_id = find_first_zero_bit(ha->vp_idx_map, ha->max_npiv_vports + 1);
  36         if (vp_id > ha->max_npiv_vports) {
  37                 DEBUG15(printk ("vp_id %d is bigger than max-supported %d.\n",
  38                     vp_id, ha->max_npiv_vports));
  39                 mutex_unlock(&ha->vport_lock);
  40                 return vp_id;
  41         }
  42
  43         set_bit(vp_id, ha->vp_idx_map);
  44         ha->num_vhosts++;
  45         ha->cur_vport_count++;
  46         vha->vp_idx = vp_id;
  47         list_add_tail(&vha->list, &ha->vp_list);
  48         mutex_unlock(&ha->vport_lock);
  49         return vp_id;
  50 }
  51
  52 void
  53 qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
  54 {
  55         uint16_t vp_id;
  56         struct qla_hw_data *ha = vha->hw;
  57
  58         mutex_lock(&ha->vport_lock);
  59         vp_id = vha->vp_idx;
  60         ha->num_vhosts--;
  61         ha->cur_vport_count--;
  62         clear_bit(vp_id, ha->vp_idx_map);
  63         list_del(&vha->list);
  64         mutex_unlock(&ha->vport_lock);
  65 }
  66
  67 static scsi_qla_host_t *
  68 qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name)
  69 {
  70         scsi_qla_host_t *vha;
  71         struct scsi_qla_host *tvha;
  72
  73         /* Locate matching device in database. */
  74         list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
  75                 if (!memcmp(port_name, vha->port_name, WWN_SIZE))
  76                         return vha;
  77         }
  78         return NULL;
  79 }
  80
  81 /*
  82  * qla2x00_mark_vp_devices_dead
  83  *      Updates fcport state when device goes offline.
  84  *
  85  * Input:
  86  *      ha = adapter block pointer.
  87  *      fcport = port structure pointer.
  88  *
  89  * Return:
  90  *      None.
  91  *
  92  * Context:
  93  */
  94 static void
  95 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
  96 {
  97         fc_port_t *fcport;
  98
  99         list_for_each_entry(fcport, &vha->vp_fcports, list) {
 100                 DEBUG15(printk("scsi(%ld): Marking port dead, "
 101                     "loop_id=0x%04x :%x\n",
 102                     vha->host_no, fcport->loop_id, fcport->vp_idx));
 103
 104                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
 105                 qla2x00_mark_device_lost(vha, fcport, 0, 0);
 106                 atomic_set(&fcport->state, FCS_UNCONFIGURED);
 107         }
 108 }
 109
 110 int
 111 qla24xx_disable_vp(scsi_qla_host_t *vha)
 112 {
 113         int ret;
 114
 115         ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 116         atomic_set(&vha->loop_state, LOOP_DOWN);
 117         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 118
 119         qla2x00_mark_vp_devices_dead(vha);
 120         atomic_set(&vha->vp_state, VP_FAILED);
 121         vha->flags.management_server_logged_in = 0;
 122         if (ret == QLA_SUCCESS) {
 123                 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
 124         } else {
 125                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 126                 return -1;
 127         }
 128         return 0;
 129 }
 130
 131 int
 132 qla24xx_enable_vp(scsi_qla_host_t *vha)
 133 {
 134         int ret;
 135         struct qla_hw_data *ha = vha->hw;
 136         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 137
 138         /* Check if physical ha port is Up */
 139         if (atomic_read(&base_vha->loop_state) == LOOP_DOWN  ||
 140                 atomic_read(&base_vha->loop_state) == LOOP_DEAD) {
 141                 vha->vp_err_state =  VP_ERR_PORTDWN;
 142                 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
 143                 goto enable_failed;
 144         }
 145
 146         /* Initialize the new vport unless it is a persistent port */
 147         mutex_lock(&ha->vport_lock);
 148         ret = qla24xx_modify_vp_config(vha);
 149         mutex_unlock(&ha->vport_lock);
 150
 151         if (ret != QLA_SUCCESS) {
 152                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 153                 goto enable_failed;
 154         }
 155
 156         DEBUG15(qla_printk(KERN_INFO, ha,
 157             "Virtual port with id: %d - Enabled\n", vha->vp_idx));
 158         return 0;
 159
 160 enable_failed:
 161         DEBUG15(qla_printk(KERN_INFO, ha,
 162             "Virtual port with id: %d - Disabled\n", vha->vp_idx));
 163         return 1;
 164 }
 165
 166 static void
 167 qla24xx_configure_vp(scsi_qla_host_t *vha)
 168 {
 169         struct fc_vport *fc_vport;
 170         int ret;
 171
 172         fc_vport = vha->fc_vport;
 173
 174         DEBUG15(printk("scsi(%ld): %s: change request #3 for this host.\n",
 175             vha->host_no, __func__));
 176         ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
 177         if (ret != QLA_SUCCESS) {
 178                 DEBUG15(qla_printk(KERN_ERR, vha->hw, "Failed to enable "
 179                     "receiving of RSCN requests: 0x%x\n", ret));
 180                 return;
 181         } else {
 182                 /* Corresponds to SCR enabled */
 183                 clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
 184         }
 185
 186         vha->flags.online = 1;
 187         if (qla24xx_configure_vhba(vha))
 188                 return;
 189
 190         atomic_set(&vha->vp_state, VP_ACTIVE);
 191         fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
 192 }
 193
 194 void
 195 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
 196 {
 197         scsi_qla_host_t *vha, *tvha;
 198         struct qla_hw_data *ha = rsp->hw;
 199         int i = 0;
 200
 201         list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
 202                 if (vha->vp_idx) {
 203                         switch (mb[0]) {
 204                         case MBA_LIP_OCCURRED:
 205                         case MBA_LOOP_UP:
 206                         case MBA_LOOP_DOWN:
 207                         case MBA_LIP_RESET:
 208                         case MBA_POINT_TO_POINT:
 209                         case MBA_CHG_IN_CONNECTION:
 210                         case MBA_PORT_UPDATE:
 211                         case MBA_RSCN_UPDATE:
 212                                 DEBUG15(printk("scsi(%ld)%s: Async_event for"
 213                                 " VP[%d], mb = 0x%x, vha=%p\n",
 214                                 vha->host_no, __func__, i, *mb, vha));
 215                                 qla2x00_async_event(vha, rsp, mb);
 216                                 break;
 217                         }
 218                 }
 219                 i++;
 220         }
 221 }
 222
 223 int
 224 qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
 225 {
 226         /*
 227          * Physical port will do most of the abort and recovery work. We can
 228          * just treat it as a loop down
 229          */
 230         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 231                 atomic_set(&vha->loop_state, LOOP_DOWN);
 232                 qla2x00_mark_all_devices_lost(vha, 0);
 233         } else {
 234                 if (!atomic_read(&vha->loop_down_timer))
 235                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 236         }
 237
 238         /* To exclusively reset vport, we need to log it out first.*/
 239         if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
 240                 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 241
 242         DEBUG15(printk("scsi(%ld): Scheduling enable of Vport %d...\n",
 243             vha->host_no, vha->vp_idx));
 244         return qla24xx_enable_vp(vha);
 245 }
 246
 247 static int
 248 qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
 249 {
 250         struct qla_hw_data *ha = vha->hw;
 251         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 252
 253         if (!(ha->current_topology & ISP_CFG_F))
 254                 return 0;
 255
 256         qla2x00_do_work(vha);
 257
 258         if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
 259                 /* VP acquired. complete port configuration */
 260                 if (atomic_read(&base_vha->loop_state) == LOOP_READY) {
 261                         qla24xx_configure_vp(vha);
 262                 } else {
 263                         set_bit(VP_IDX_ACQUIRED, &vha->vp_flags);
 264                         set_bit(VP_DPC_NEEDED, &base_vha->dpc_flags);
 265                 }
 266
 267                 return 0;
 268         }
 269
 270         if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
 271                 qla2x00_update_fcports(vha);
 272                 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
 273         }
 274
 275         if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) &&
 276                 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
 277                 atomic_read(&vha->loop_state) != LOOP_DOWN) {
 278
 279                 DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
 280                                                 vha->host_no));
 281                 qla2x00_relogin(vha);
 282
 283                 DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
 284                                                         vha->host_no));
 285         }
 286
 287         if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
 288             (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
 289                 clear_bit(RESET_ACTIVE, &vha->dpc_flags);
 290         }
 291
 292         if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
 293                 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
 294                         qla2x00_loop_resync(vha);
 295                         clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
 296                 }
 297         }
 298
 299         return 0;
 300 }
 301
 302 void
 303 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
 304 {
 305         int ret;
 306         struct qla_hw_data *ha = vha->hw;
 307         scsi_qla_host_t *vp;
 308         struct scsi_qla_host *tvp;
 309
 310         if (vha->vp_idx)
 311                 return;
 312         if (list_empty(&ha->vp_list))
 313                 return;
 314
 315         clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);
 316
 317         list_for_each_entry_safe(vp, tvp, &ha->vp_list, list) {
 318                 if (vp->vp_idx)
 319                         ret = qla2x00_do_dpc_vp(vp);
 320         }
 321 }
 322
 323 int
 324 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
 325 {
 326         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 327         struct qla_hw_data *ha = base_vha->hw;
 328         scsi_qla_host_t *vha;
 329         uint8_t port_name[WWN_SIZE];
 330
 331         if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
 332                 return VPCERR_UNSUPPORTED;
 333
 334         /* Check up the F/W and H/W support NPIV */
 335         if (!ha->flags.npiv_supported)
 336                 return VPCERR_UNSUPPORTED;
 337
 338         /* Check up whether npiv supported switch presented */
 339         if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
 340                 return VPCERR_NO_FABRIC_SUPP;
 341
 342         /* Check up unique WWPN */
 343         u64_to_wwn(fc_vport->port_name, port_name);
 344         if (!memcmp(port_name, base_vha->port_name, WWN_SIZE))
 345                 return VPCERR_BAD_WWN;
 346         vha = qla24xx_find_vhost_by_name(ha, port_name);
 347         if (vha)
 348                 return VPCERR_BAD_WWN;
 349
 350         /* Check up max-npiv-supports */
 351         if (ha->num_vhosts > ha->max_npiv_vports) {
 352                 DEBUG15(printk("scsi(%ld): num_vhosts %ud is bigger than "
 353                     "max_npv_vports %ud.\n", base_vha->host_no,
 354                     ha->num_vhosts, ha->max_npiv_vports));
 355                 return VPCERR_UNSUPPORTED;
 356         }
 357         return 0;
 358 }
 359
 360 scsi_qla_host_t *
 361 qla24xx_create_vhost(struct fc_vport *fc_vport)
 362 {
 363         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 364         struct qla_hw_data *ha = base_vha->hw;
 365         scsi_qla_host_t *vha;
 366         struct scsi_host_template *sht = &qla2xxx_driver_template;
 367         struct Scsi_Host *host;
 368
 369         vha = qla2x00_create_host(sht, ha);
 370         if (!vha) {
 371                 DEBUG(printk("qla2xxx: scsi_host_alloc() failed for vport\n"));
 372                 return(NULL);
 373         }
 374
 375         host = vha->host;
 376         fc_vport->dd_data = vha;
 377         /* New host info */
 378         u64_to_wwn(fc_vport->node_name, vha->node_name);
 379         u64_to_wwn(fc_vport->port_name, vha->port_name);
 380
 381         vha->fc_vport = fc_vport;
 382         vha->device_flags = 0;
 383         vha->vp_idx = qla24xx_allocate_vp_id(vha);
 384         if (vha->vp_idx > ha->max_npiv_vports) {
 385                 DEBUG15(printk("scsi(%ld): Couldn't allocate vp_id.\n",
 386                         vha->host_no));
 387                 goto create_vhost_failed;
 388         }
 389         vha->mgmt_svr_loop_id = 10 + vha->vp_idx;
 390
 391         vha->dpc_flags = 0L;
 392         set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 393         set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 394
 395         /*
 396          * To fix the issue of processing a parent's RSCN for the vport before
 397          * its SCR is complete.
 398          */
 399         set_bit(VP_SCR_NEEDED, &vha->vp_flags);
 400         atomic_set(&vha->loop_state, LOOP_DOWN);
 401         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 402
 403         qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);
 404
 405         vha->req = base_vha->req;
 406         host->can_queue = base_vha->req->length + 128;
 407         host->this_id = 255;
 408         host->cmd_per_lun = 3;
 409         host->max_cmd_len = MAX_CMDSZ;
 410         host->max_channel = MAX_BUSES - 1;
 411         host->max_lun = MAX_LUNS;
 412         host->unique_id = host->host_no;
 413         host->max_id = MAX_TARGETS_2200;
 414         host->transportt = qla2xxx_transport_vport_template;
 415
 416         DEBUG15(printk("DEBUG: detect vport hba %ld at address = %p\n",
 417             vha->host_no, vha));
 418
 419         vha->flags.init_done = 1;
 420
 421         return vha;
 422
 423 create_vhost_failed:
 424         return NULL;
 425 }
 426
 427 static void
 428 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req)
 429 {
 430         struct qla_hw_data *ha = vha->hw;
 431         uint16_t que_id = req->id;
 432
 433         dma_free_coherent(&ha->pdev->dev, (req->length + 1) *
 434                 sizeof(request_t), req->ring, req->dma);
 435         req->ring = NULL;
 436         req->dma = 0;
 437         if (que_id) {
 438                 ha->req_q_map[que_id] = NULL;
 439                 mutex_lock(&ha->vport_lock);
 440                 clear_bit(que_id, ha->req_qid_map);
 441                 mutex_unlock(&ha->vport_lock);
 442         }
 443         kfree(req);
 444         req = NULL;
 445 }
 446
 447 static void
 448 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 449 {
 450         struct qla_hw_data *ha = vha->hw;
 451         uint16_t que_id = rsp->id;
 452
 453         if (rsp->msix && rsp->msix->have_irq) {
 454                 free_irq(rsp->msix->vector, rsp);
 455                 rsp->msix->have_irq = 0;
 456                 rsp->msix->rsp = NULL;
 457         }
 458         dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) *
 459                 sizeof(response_t), rsp->ring, rsp->dma);
 460         rsp->ring = NULL;
 461         rsp->dma = 0;
 462         if (que_id) {
 463                 ha->rsp_q_map[que_id] = NULL;
 464                 mutex_lock(&ha->vport_lock);
 465                 clear_bit(que_id, ha->rsp_qid_map);
 466                 mutex_unlock(&ha->vport_lock);
 467         }
 468         kfree(rsp);
 469         rsp = NULL;
 470 }
 471
 472 int
 473 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
 474 {
 475         int ret = -1;
 476
 477         if (req) {
 478                 req->options |= BIT_0;
 479                 ret = qla25xx_init_req_que(vha, req);
 480         }
 481         if (ret == QLA_SUCCESS)
 482                 qla25xx_free_req_que(vha, req);
 483
 484         return ret;
 485 }
 486
 487 int
 488 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 489 {
 490         int ret = -1;
 491
 492         if (rsp) {
 493                 rsp->options |= BIT_0;
 494                 ret = qla25xx_init_rsp_que(vha, rsp);
 495         }
 496         if (ret == QLA_SUCCESS)
 497                 qla25xx_free_rsp_que(vha, rsp);
 498
 499         return ret;
 500 }
 501
 502 int qla25xx_update_req_que(struct scsi_qla_host *vha, uint8_t que, uint8_t qos)
 503 {
 504         int ret = 0;
 505         struct qla_hw_data *ha = vha->hw;
 506         struct req_que *req = ha->req_q_map[que];
 507
 508         req->options |= BIT_3;
 509         req->qos = qos;
 510         ret = qla25xx_init_req_que(vha, req);
 511         if (ret != QLA_SUCCESS)
 512                 DEBUG2_17(printk(KERN_WARNING "%s failed\n", __func__));
 513         /* restore options bit */
 514         req->options &= ~BIT_3;
 515         return ret;
 516 }
 517
 518
 519 /* Delete all queues for a given vhost */
 520 int
 521 qla25xx_delete_queues(struct scsi_qla_host *vha)
 522 {
 523         int cnt, ret = 0;
 524         struct req_que *req = NULL;
 525         struct rsp_que *rsp = NULL;
 526         struct qla_hw_data *ha = vha->hw;
 527
 528         /* Delete request queues */
 529         for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
 530                 req = ha->req_q_map[cnt];
 531                 if (req) {
 532                         ret = qla25xx_delete_req_que(vha, req);
 533                         if (ret != QLA_SUCCESS) {
 534                                 qla_printk(KERN_WARNING, ha,
 535                                 "Couldn't delete req que %d\n",
 536                                 req->id);
 537                                 return ret;
 538                         }
 539                 }
 540         }
 541
 542         /* Delete response queues */
 543         for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) {
 544                 rsp = ha->rsp_q_map[cnt];
 545                 if (rsp) {
 546                         ret = qla25xx_delete_rsp_que(vha, rsp);
 547                         if (ret != QLA_SUCCESS) {
 548                                 qla_printk(KERN_WARNING, ha,
 549                                 "Couldn't delete rsp que %d\n",
 550                                 rsp->id);
 551                                 return ret;
 552                         }
 553                 }
 554         }
 555         return ret;
 556 }
 557
 558 int
 559 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
 560         uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos)
 561 {
 562         int ret = 0;
 563         struct req_que *req = NULL;
 564         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 565         uint16_t que_id = 0;
 566         device_reg_t __iomem *reg;
 567         uint32_t cnt;
 568
 569         req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
 570         if (req == NULL) {
 571                 qla_printk(KERN_WARNING, ha, "could not allocate memory"
 572                         "for request que\n");
 573                 goto que_failed;
 574         }
 575
 576         req->length = REQUEST_ENTRY_CNT_24XX;
 577         req->ring = dma_alloc_coherent(&ha->pdev->dev,
 578                         (req->length + 1) * sizeof(request_t),
 579                         &req->dma, GFP_KERNEL);
 580         if (req->ring == NULL) {
 581                 qla_printk(KERN_WARNING, ha,
 582                 "Memory Allocation failed - request_ring\n");
 583                 goto que_failed;
 584         }
 585
 586         mutex_lock(&ha->vport_lock);
 587         que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues);
 588         if (que_id >= ha->max_req_queues) {
 589                 mutex_unlock(&ha->vport_lock);
 590                 qla_printk(KERN_INFO, ha, "No resources to create "
 591                          "additional request queue\n");
 592                 goto que_failed;
 593         }
 594         set_bit(que_id, ha->req_qid_map);
 595         ha->req_q_map[que_id] = req;
 596         req->rid = rid;
 597         req->vp_idx = vp_idx;
 598         req->qos = qos;
 599
 600         if (rsp_que < 0)
 601                 req->rsp = NULL;
 602         else
 603                 req->rsp = ha->rsp_q_map[rsp_que];
 604         /* Use alternate PCI bus number */
 605         if (MSB(req->rid))
 606                 options |= BIT_4;
 607         /* Use alternate PCI devfn */
 608         if (LSB(req->rid))
 609                 options |= BIT_5;
 610         req->options = options;
 611
 612         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++)
 613                 req->outstanding_cmds[cnt] = NULL;
 614         req->current_outstanding_cmd = 1;
 615
 616         req->ring_ptr = req->ring;
 617         req->ring_index = 0;
 618         req->cnt = req->length;
 619         req->id = que_id;
 620         reg = ISP_QUE_REG(ha, que_id);
 621         req->max_q_depth = ha->req_q_map[0]->max_q_depth;
 622         mutex_unlock(&ha->vport_lock);
 623
 624         ret = qla25xx_init_req_que(base_vha, req);
 625         if (ret != QLA_SUCCESS) {
 626                 qla_printk(KERN_WARNING, ha, "%s failed\n", __func__);
 627                 mutex_lock(&ha->vport_lock);
 628                 clear_bit(que_id, ha->req_qid_map);
 629                 mutex_unlock(&ha->vport_lock);
 630                 goto que_failed;
 631         }
 632
 633         return req->id;
 634
 635 que_failed:
 636         qla25xx_free_req_que(base_vha, req);
 637         return 0;
 638 }
 639
 640 static void qla_do_work(struct work_struct *work)
 641 {
 642         struct rsp_que *rsp = container_of(work, struct rsp_que, q_work);
 643         struct scsi_qla_host *vha;
 644
 645         vha = qla25xx_get_host(rsp);
 646         qla24xx_process_response_queue(vha, rsp);
 647 }
 648
 649 /* create response queue */
 650 int
 651 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
 652         uint8_t vp_idx, uint16_t rid, int req)
 653 {
 654         int ret = 0;
 655         struct rsp_que *rsp = NULL;
 656         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 657         uint16_t que_id = 0;
 658         device_reg_t __iomem *reg;
 659
 660         rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
 661         if (rsp == NULL) {
 662                 qla_printk(KERN_WARNING, ha, "could not allocate memory for"
 663                                 " response que\n");
 664                 goto que_failed;
 665         }
 666
 667         rsp->length = RESPONSE_ENTRY_CNT_MQ;
 668         rsp->ring = dma_alloc_coherent(&ha->pdev->dev,
 669                         (rsp->length + 1) * sizeof(response_t),
 670                         &rsp->dma, GFP_KERNEL);
 671         if (rsp->ring == NULL) {
 672                 qla_printk(KERN_WARNING, ha,
 673                 "Memory Allocation failed - response_ring\n");
 674                 goto que_failed;
 675         }
 676
 677         mutex_lock(&ha->vport_lock);
 678         que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues);
 679         if (que_id >= ha->max_rsp_queues) {
 680                 mutex_unlock(&ha->vport_lock);
 681                 qla_printk(KERN_INFO, ha, "No resources to create "
 682                          "additional response queue\n");
 683                 goto que_failed;
 684         }
 685         set_bit(que_id, ha->rsp_qid_map);
 686
 687         if (ha->flags.msix_enabled)
 688                 rsp->msix = &ha->msix_entries[que_id + 1];
 689         else
 690                 qla_printk(KERN_WARNING, ha, "msix not enabled\n");
 691
 692         ha->rsp_q_map[que_id] = rsp;
 693         rsp->rid = rid;
 694         rsp->vp_idx = vp_idx;
 695         rsp->hw = ha;
 696         /* Use alternate PCI bus number */
 697         if (MSB(rsp->rid))
 698                 options |= BIT_4;
 699         /* Use alternate PCI devfn */
 700         if (LSB(rsp->rid))
 701                 options |= BIT_5;
 702         rsp->options = options;
 703         rsp->id = que_id;
 704         reg = ISP_QUE_REG(ha, que_id);
 705         rsp->rsp_q_in = &reg->isp25mq.rsp_q_in;
 706         rsp->rsp_q_out = &reg->isp25mq.rsp_q_out;
 707         mutex_unlock(&ha->vport_lock);
 708
 709         ret = qla25xx_request_irq(rsp);
 710         if (ret)
 711                 goto que_failed;
 712
 713         ret = qla25xx_init_rsp_que(base_vha, rsp);
 714         if (ret != QLA_SUCCESS) {
 715                 qla_printk(KERN_WARNING, ha, "%s failed\n", __func__);
 716                 mutex_lock(&ha->vport_lock);
 717                 clear_bit(que_id, ha->rsp_qid_map);
 718                 mutex_unlock(&ha->vport_lock);
 719                 goto que_failed;
 720         }
 721         if (req >= 0)
 722                 rsp->req = ha->req_q_map[req];
 723         else
 724                 rsp->req = NULL;
 725
 726         qla2x00_init_response_q_entries(rsp);
 727         if (rsp->hw->wq)
 728                 INIT_WORK(&rsp->q_work, qla_do_work);
 729         return rsp->id;
 730
 731 que_failed:
 732         qla25xx_free_rsp_que(base_vha, rsp);
 733         return 0;
 734 }
 735
 736 int
 737 qla25xx_create_queues(struct scsi_qla_host *vha, uint8_t qos)
 738 {
 739         uint16_t options = 0;
 740         uint8_t ret = 0;
 741         struct qla_hw_data *ha = vha->hw;
 742         struct rsp_que *rsp;
 743
 744         options |= BIT_1;
 745         ret = qla25xx_create_rsp_que(ha, options, vha->vp_idx, 0, -1);
 746         if (!ret) {
 747                 qla_printk(KERN_WARNING, ha, "Response Que create failed\n");
 748                 return ret;
 749         } else
 750                 qla_printk(KERN_INFO, ha, "Response Que:%d created.\n", ret);
 751         rsp = ha->rsp_q_map[ret];
 752
 753         options = 0;
 754         if (qos & BIT_7)
 755                 options |= BIT_8;
 756         ret = qla25xx_create_req_que(ha, options, vha->vp_idx, 0, ret,
 757                                         qos & ~BIT_7);
 758         if (ret) {
 759                 vha->req = ha->req_q_map[ret];
 760                 qla_printk(KERN_INFO, ha, "Request Que:%d created.\n", ret);
 761         } else
 762                 qla_printk(KERN_WARNING, ha, "Request Que create failed\n");
 763         rsp->req = ha->req_q_map[ret];
 764
 765         return ret;
 766 }