git.oblomov.eu Git - linux-2.6/blob - 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/smp_lock.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
  34         /* Find an empty slot and assign an vp_id */
  35         mutex_lock(&ha->vport_lock);
  36         vp_id = find_first_zero_bit(ha->vp_idx_map, ha->max_npiv_vports + 1);
  37         if (vp_id > ha->max_npiv_vports) {
  38                 DEBUG15(printk ("vp_id %d is bigger than max-supported %d.\n",
  39                     vp_id, ha->max_npiv_vports));
  40                 mutex_unlock(&ha->vport_lock);
  41                 return vp_id;
  42         }
  43
  44         set_bit(vp_id, ha->vp_idx_map);
  45         ha->num_vhosts++;
  46         ha->cur_vport_count++;
  47         vha->vp_idx = vp_id;
  48         list_add_tail(&vha->list, &ha->vp_list);
  49         mutex_unlock(&ha->vport_lock);
  50         return vp_id;
  51 }
  52
  53 void
  54 qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
  55 {
  56         uint16_t vp_id;
  57         struct qla_hw_data *ha = vha->hw;
  58
  59         mutex_lock(&ha->vport_lock);
  60         vp_id = vha->vp_idx;
  61         ha->num_vhosts--;
  62         ha->cur_vport_count--;
  63         clear_bit(vp_id, ha->vp_idx_map);
  64         list_del(&vha->list);
  65         mutex_unlock(&ha->vport_lock);
  66 }
  67
  68 static scsi_qla_host_t *
  69 qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name)
  70 {
  71         scsi_qla_host_t *vha;
  72         struct scsi_qla_host *tvha;
  73
  74         /* Locate matching device in database. */
  75         list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
  76                 if (!memcmp(port_name, vha->port_name, WWN_SIZE))
  77                         return vha;
  78         }
  79         return NULL;
  80 }
  81
  82 /*
  83  * qla2x00_mark_vp_devices_dead
  84  *      Updates fcport state when device goes offline.
  85  *
  86  * Input:
  87  *      ha = adapter block pointer.
  88  *      fcport = port structure pointer.
  89  *
  90  * Return:
  91  *      None.
  92  *
  93  * Context:
  94  */
  95 static void
  96 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
  97 {
  98         fc_port_t *fcport;
  99
 100         list_for_each_entry(fcport, &vha->vp_fcports, list) {
 101                 DEBUG15(printk("scsi(%ld): Marking port dead, "
 102                     "loop_id=0x%04x :%x\n",
 103                     vha->host_no, fcport->loop_id, fcport->vp_idx));
 104
 105                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
 106                 qla2x00_mark_device_lost(vha, fcport, 0, 0);
 107                 atomic_set(&fcport->state, FCS_UNCONFIGURED);
 108         }
 109 }
 110
 111 int
 112 qla24xx_disable_vp(scsi_qla_host_t *vha)
 113 {
 114         int ret;
 115
 116         ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 117         atomic_set(&vha->loop_state, LOOP_DOWN);
 118         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 119
 120         qla2x00_mark_vp_devices_dead(vha);
 121         atomic_set(&vha->vp_state, VP_FAILED);
 122         vha->flags.management_server_logged_in = 0;
 123         if (ret == QLA_SUCCESS) {
 124                 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
 125         } else {
 126                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 127                 return -1;
 128         }
 129         return 0;
 130 }
 131
 132 int
 133 qla24xx_enable_vp(scsi_qla_host_t *vha)
 134 {
 135         int ret;
 136         struct qla_hw_data *ha = vha->hw;
 137         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 138
 139         /* Check if physical ha port is Up */
 140         if (atomic_read(&base_vha->loop_state) == LOOP_DOWN  ||
 141                 atomic_read(&base_vha->loop_state) == LOOP_DEAD) {
 142                 vha->vp_err_state =  VP_ERR_PORTDWN;
 143                 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
 144                 goto enable_failed;
 145         }
 146
 147         /* Initialize the new vport unless it is a persistent port */
 148         mutex_lock(&ha->vport_lock);
 149         ret = qla24xx_modify_vp_config(vha);
 150         mutex_unlock(&ha->vport_lock);
 151
 152         if (ret != QLA_SUCCESS) {
 153                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 154                 goto enable_failed;
 155         }
 156
 157         DEBUG15(qla_printk(KERN_INFO, ha,
 158             "Virtual port with id: %d - Enabled\n", vha->vp_idx));
 159         return 0;
 160
 161 enable_failed:
 162         DEBUG15(qla_printk(KERN_INFO, ha,
 163             "Virtual port with id: %d - Disabled\n", vha->vp_idx));
 164         return 1;
 165 }
 166
 167 static void
 168 qla24xx_configure_vp(scsi_qla_host_t *vha)
 169 {
 170         struct fc_vport *fc_vport;
 171         int ret;
 172
 173         fc_vport = vha->fc_vport;
 174
 175         DEBUG15(printk("scsi(%ld): %s: change request #3 for this host.\n",
 176             vha->host_no, __func__));
 177         ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
 178         if (ret != QLA_SUCCESS) {
 179                 DEBUG15(qla_printk(KERN_ERR, vha->hw, "Failed to enable "
 180                     "receiving of RSCN requests: 0x%x\n", ret));
 181                 return;
 182         } else {
 183                 /* Corresponds to SCR enabled */
 184                 clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
 185         }
 186
 187         vha->flags.online = 1;
 188         if (qla24xx_configure_vhba(vha))
 189                 return;
 190
 191         atomic_set(&vha->vp_state, VP_ACTIVE);
 192         fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
 193 }
 194
 195 void
 196 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
 197 {
 198         scsi_qla_host_t *vha, *tvha;
 199         struct qla_hw_data *ha = rsp->hw;
 200         int i = 0;
 201
 202         list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
 203                 if (vha->vp_idx) {
 204                         switch (mb[0]) {
 205                         case MBA_LIP_OCCURRED:
 206                         case MBA_LOOP_UP:
 207                         case MBA_LOOP_DOWN:
 208                         case MBA_LIP_RESET:
 209                         case MBA_POINT_TO_POINT:
 210                         case MBA_CHG_IN_CONNECTION:
 211                         case MBA_PORT_UPDATE:
 212                         case MBA_RSCN_UPDATE:
 213                                 DEBUG15(printk("scsi(%ld)%s: Async_event for"
 214                                 " VP[%d], mb = 0x%x, vha=%p\n",
 215                                 vha->host_no, __func__, i, *mb, vha));
 216                                 qla2x00_async_event(vha, rsp, mb);
 217                                 break;
 218                         }
 219                 }
 220                 i++;
 221         }
 222 }
 223
 224 int
 225 qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
 226 {
 227         /*
 228          * Physical port will do most of the abort and recovery work. We can
 229          * just treat it as a loop down
 230          */
 231         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 232                 atomic_set(&vha->loop_state, LOOP_DOWN);
 233                 qla2x00_mark_all_devices_lost(vha, 0);
 234         } else {
 235                 if (!atomic_read(&vha->loop_down_timer))
 236                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 237         }
 238
 239         /* To exclusively reset vport, we need to log it out first.*/
 240         if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
 241                 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 242
 243         DEBUG15(printk("scsi(%ld): Scheduling enable of Vport %d...\n",
 244             vha->host_no, vha->vp_idx));
 245         return qla24xx_enable_vp(vha);
 246 }
 247
 248 static int
 249 qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
 250 {
 251         struct qla_hw_data *ha = vha->hw;
 252         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 253
 254         if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
 255                 /* VP acquired. complete port configuration */
 256                 if (atomic_read(&base_vha->loop_state) == LOOP_READY) {
 257                         qla24xx_configure_vp(vha);
 258                 } else {
 259                         set_bit(VP_IDX_ACQUIRED, &vha->vp_flags);
 260                         set_bit(VP_DPC_NEEDED, &base_vha->dpc_flags);
 261                 }
 262
 263                 return 0;
 264         }
 265
 266         if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
 267                 qla2x00_update_fcports(vha);
 268                 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
 269         }
 270
 271         if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) &&
 272                 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
 273                 atomic_read(&vha->loop_state) != LOOP_DOWN) {
 274
 275                 DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
 276                                                 vha->host_no));
 277                 qla2x00_relogin(vha);
 278
 279                 DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
 280                                                         vha->host_no));
 281         }
 282
 283         if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
 284             (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
 285                 clear_bit(RESET_ACTIVE, &vha->dpc_flags);
 286         }
 287
 288         if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
 289                 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
 290                         qla2x00_loop_resync(vha);
 291                         clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
 292                 }
 293         }
 294
 295         return 0;
 296 }
 297
 298 void
 299 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
 300 {
 301         int ret;
 302         struct qla_hw_data *ha = vha->hw;
 303         scsi_qla_host_t *vp;
 304         struct scsi_qla_host *tvp;
 305
 306         if (vha->vp_idx)
 307                 return;
 308         if (list_empty(&ha->vp_list))
 309                 return;
 310
 311         clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);
 312
 313         list_for_each_entry_safe(vp, tvp, &ha->vp_list, list) {
 314                 if (vp->vp_idx)
 315                         ret = qla2x00_do_dpc_vp(vp);
 316         }
 317 }
 318
 319 int
 320 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
 321 {
 322         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 323         struct qla_hw_data *ha = base_vha->hw;
 324         scsi_qla_host_t *vha;
 325         uint8_t port_name[WWN_SIZE];
 326
 327         if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
 328                 return VPCERR_UNSUPPORTED;
 329
 330         /* Check up the F/W and H/W support NPIV */
 331         if (!ha->flags.npiv_supported)
 332                 return VPCERR_UNSUPPORTED;
 333
 334         /* Check up whether npiv supported switch presented */
 335         if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
 336                 return VPCERR_NO_FABRIC_SUPP;
 337
 338         /* Check up unique WWPN */
 339         u64_to_wwn(fc_vport->port_name, port_name);
 340         if (!memcmp(port_name, base_vha->port_name, WWN_SIZE))
 341                 return VPCERR_BAD_WWN;
 342         vha = qla24xx_find_vhost_by_name(ha, port_name);
 343         if (vha)
 344                 return VPCERR_BAD_WWN;
 345
 346         /* Check up max-npiv-supports */
 347         if (ha->num_vhosts > ha->max_npiv_vports) {
 348                 DEBUG15(printk("scsi(%ld): num_vhosts %ud is bigger than "
 349                     "max_npv_vports %ud.\n", base_vha->host_no,
 350                     ha->num_vhosts, ha->max_npiv_vports));
 351                 return VPCERR_UNSUPPORTED;
 352         }
 353         return 0;
 354 }
 355
 356 scsi_qla_host_t *
 357 qla24xx_create_vhost(struct fc_vport *fc_vport)
 358 {
 359         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 360         struct qla_hw_data *ha = base_vha->hw;
 361         scsi_qla_host_t *vha;
 362         struct scsi_host_template *sht = &qla2xxx_driver_template;
 363         struct Scsi_Host *host;
 364
 365         vha = qla2x00_create_host(sht, ha);
 366         if (!vha) {
 367                 DEBUG(printk("qla2xxx: scsi_host_alloc() failed for vport\n"));
 368                 return(NULL);
 369         }
 370
 371         host = vha->host;
 372         fc_vport->dd_data = vha;
 373         /* New host info */
 374         u64_to_wwn(fc_vport->node_name, vha->node_name);
 375         u64_to_wwn(fc_vport->port_name, vha->port_name);
 376
 377         vha->fc_vport = fc_vport;
 378         vha->device_flags = 0;
 379         vha->vp_idx = qla24xx_allocate_vp_id(vha);
 380         if (vha->vp_idx > ha->max_npiv_vports) {
 381                 DEBUG15(printk("scsi(%ld): Couldn't allocate vp_id.\n",
 382                         vha->host_no));
 383                 goto create_vhost_failed;
 384         }
 385         vha->mgmt_svr_loop_id = 10 + vha->vp_idx;
 386
 387         vha->dpc_flags = 0L;
 388         set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 389         set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 390
 391         /*
 392          * To fix the issue of processing a parent's RSCN for the vport before
 393          * its SCR is complete.
 394          */
 395         set_bit(VP_SCR_NEEDED, &vha->vp_flags);
 396         atomic_set(&vha->loop_state, LOOP_DOWN);
 397         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 398
 399         qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);
 400
 401         vha->req = base_vha->req;
 402         host->can_queue = base_vha->req->length + 128;
 403         host->this_id = 255;
 404         host->cmd_per_lun = 3;
 405         host->max_cmd_len = MAX_CMDSZ;
 406         host->max_channel = MAX_BUSES - 1;
 407         host->max_lun = MAX_LUNS;
 408         host->unique_id = host->host_no;
 409         host->max_id = MAX_TARGETS_2200;
 410         host->transportt = qla2xxx_transport_vport_template;
 411
 412         DEBUG15(printk("DEBUG: detect vport hba %ld at address = %p\n",
 413             vha->host_no, vha));
 414
 415         vha->flags.init_done = 1;
 416
 417         return vha;
 418
 419 create_vhost_failed:
 420         return NULL;
 421 }
 422
 423 static void
 424 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req)
 425 {
 426         struct qla_hw_data *ha = vha->hw;
 427         uint16_t que_id = req->id;
 428
 429         dma_free_coherent(&ha->pdev->dev, (req->length + 1) *
 430                 sizeof(request_t), req->ring, req->dma);
 431         req->ring = NULL;
 432         req->dma = 0;
 433         if (que_id) {
 434                 ha->req_q_map[que_id] = NULL;
 435                 mutex_lock(&ha->vport_lock);
 436                 clear_bit(que_id, ha->req_qid_map);
 437                 mutex_unlock(&ha->vport_lock);
 438         }
 439         kfree(req);
 440         req = NULL;
 441 }
 442
 443 static void
 444 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 445 {
 446         struct qla_hw_data *ha = vha->hw;
 447         uint16_t que_id = rsp->id;
 448
 449         if (rsp->msix && rsp->msix->have_irq) {
 450                 free_irq(rsp->msix->vector, rsp);
 451                 rsp->msix->have_irq = 0;
 452                 rsp->msix->rsp = NULL;
 453         }
 454         dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) *
 455                 sizeof(response_t), rsp->ring, rsp->dma);
 456         rsp->ring = NULL;
 457         rsp->dma = 0;
 458         if (que_id) {
 459                 ha->rsp_q_map[que_id] = NULL;
 460                 mutex_lock(&ha->vport_lock);
 461                 clear_bit(que_id, ha->rsp_qid_map);
 462                 mutex_unlock(&ha->vport_lock);
 463         }
 464         kfree(rsp);
 465         rsp = NULL;
 466 }
 467
 468 int
 469 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
 470 {
 471         int ret = -1;
 472
 473         if (req) {
 474                 req->options |= BIT_0;
 475                 ret = qla25xx_init_req_que(vha, req);
 476         }
 477         if (ret == QLA_SUCCESS)
 478                 qla25xx_free_req_que(vha, req);
 479
 480         return ret;
 481 }
 482
 483 int
 484 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 485 {
 486         int ret = -1;
 487
 488         if (rsp) {
 489                 rsp->options |= BIT_0;
 490                 ret = qla25xx_init_rsp_que(vha, rsp);
 491         }
 492         if (ret == QLA_SUCCESS)
 493                 qla25xx_free_rsp_que(vha, rsp);
 494
 495         return ret;
 496 }
 497
 498 int qla25xx_update_req_que(struct scsi_qla_host *vha, uint8_t que, uint8_t qos)
 499 {
 500         int ret = 0;
 501         struct qla_hw_data *ha = vha->hw;
 502         struct req_que *req = ha->req_q_map[que];
 503
 504         req->options |= BIT_3;
 505         req->qos = qos;
 506         ret = qla25xx_init_req_que(vha, req);
 507         if (ret != QLA_SUCCESS)
 508                 DEBUG2_17(printk(KERN_WARNING "%s failed\n", __func__));
 509         /* restore options bit */
 510         req->options &= ~BIT_3;
 511         return ret;
 512 }
 513
 514
 515 /* Delete all queues for a given vhost */
 516 int
 517 qla25xx_delete_queues(struct scsi_qla_host *vha)
 518 {
 519         int cnt, ret = 0;
 520         struct req_que *req = NULL;
 521         struct rsp_que *rsp = NULL;
 522         struct qla_hw_data *ha = vha->hw;
 523
 524         /* Delete request queues */
 525         for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
 526                 req = ha->req_q_map[cnt];
 527                 if (req) {
 528                         ret = qla25xx_delete_req_que(vha, req);
 529                         if (ret != QLA_SUCCESS) {
 530                                 qla_printk(KERN_WARNING, ha,
 531                                 "Couldn't delete req que %d\n",
 532                                 req->id);
 533                                 return ret;
 534                         }
 535                 }
 536         }
 537
 538         /* Delete response queues */
 539         for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) {
 540                 rsp = ha->rsp_q_map[cnt];
 541                 if (rsp) {
 542                         ret = qla25xx_delete_rsp_que(vha, rsp);
 543                         if (ret != QLA_SUCCESS) {
 544                                 qla_printk(KERN_WARNING, ha,
 545                                 "Couldn't delete rsp que %d\n",
 546                                 rsp->id);
 547                                 return ret;
 548                         }
 549                 }
 550         }
 551         return ret;
 552 }
 553
 554 int
 555 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
 556         uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos)
 557 {
 558         int ret = 0;
 559         struct req_que *req = NULL;
 560         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 561         uint16_t que_id = 0;
 562         device_reg_t __iomem *reg;
 563         uint32_t cnt;
 564
 565         req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
 566         if (req == NULL) {
 567                 qla_printk(KERN_WARNING, ha, "could not allocate memory"
 568                         "for request que\n");
 569                 goto que_failed;
 570         }
 571
 572         req->length = REQUEST_ENTRY_CNT_24XX;
 573         req->ring = dma_alloc_coherent(&ha->pdev->dev,
 574                         (req->length + 1) * sizeof(request_t),
 575                         &req->dma, GFP_KERNEL);
 576         if (req->ring == NULL) {
 577                 qla_printk(KERN_WARNING, ha,
 578                 "Memory Allocation failed - request_ring\n");
 579                 goto que_failed;
 580         }
 581
 582         mutex_lock(&ha->vport_lock);
 583         que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues);
 584         if (que_id >= ha->max_req_queues) {
 585                 mutex_unlock(&ha->vport_lock);
 586                 qla_printk(KERN_INFO, ha, "No resources to create "
 587                          "additional request queue\n");
 588                 goto que_failed;
 589         }
 590         set_bit(que_id, ha->req_qid_map);
 591         ha->req_q_map[que_id] = req;
 592         req->rid = rid;
 593         req->vp_idx = vp_idx;
 594         req->qos = qos;
 595
 596         if (rsp_que < 0)
 597                 req->rsp = NULL;
 598         else
 599                 req->rsp = ha->rsp_q_map[rsp_que];
 600         /* Use alternate PCI bus number */
 601         if (MSB(req->rid))
 602                 options |= BIT_4;
 603         /* Use alternate PCI devfn */
 604         if (LSB(req->rid))
 605                 options |= BIT_5;
 606         req->options = options;
 607
 608         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++)
 609                 req->outstanding_cmds[cnt] = NULL;
 610         req->current_outstanding_cmd = 1;
 611
 612         req->ring_ptr = req->ring;
 613         req->ring_index = 0;
 614         req->cnt = req->length;
 615         req->id = que_id;
 616         reg = ISP_QUE_REG(ha, que_id);
 617         req->max_q_depth = ha->req_q_map[0]->max_q_depth;
 618         mutex_unlock(&ha->vport_lock);
 619
 620         ret = qla25xx_init_req_que(base_vha, req);
 621         if (ret != QLA_SUCCESS) {
 622                 qla_printk(KERN_WARNING, ha, "%s failed\n", __func__);
 623                 mutex_lock(&ha->vport_lock);
 624                 clear_bit(que_id, ha->req_qid_map);
 625                 mutex_unlock(&ha->vport_lock);
 626                 goto que_failed;
 627         }
 628
 629         return req->id;
 630
 631 que_failed:
 632         qla25xx_free_req_que(base_vha, req);
 633         return 0;
 634 }
 635
 636 static void qla_do_work(struct work_struct *work)
 637 {
 638         struct rsp_que *rsp = container_of(work, struct rsp_que, q_work);
 639         struct scsi_qla_host *vha;
 640
 641         vha = qla25xx_get_host(rsp);
 642         qla24xx_process_response_queue(vha, rsp);
 643 }
 644
 645 /* create response queue */
 646 int
 647 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
 648         uint8_t vp_idx, uint16_t rid, int req)
 649 {
 650         int ret = 0;
 651         struct rsp_que *rsp = NULL;
 652         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 653         uint16_t que_id = 0;
 654         device_reg_t __iomem *reg;
 655
 656         rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
 657         if (rsp == NULL) {
 658                 qla_printk(KERN_WARNING, ha, "could not allocate memory for"
 659                                 " response que\n");
 660                 goto que_failed;
 661         }
 662
 663         rsp->length = RESPONSE_ENTRY_CNT_MQ;
 664         rsp->ring = dma_alloc_coherent(&ha->pdev->dev,
 665                         (rsp->length + 1) * sizeof(response_t),
 666                         &rsp->dma, GFP_KERNEL);
 667         if (rsp->ring == NULL) {
 668                 qla_printk(KERN_WARNING, ha,
 669                 "Memory Allocation failed - response_ring\n");
 670                 goto que_failed;
 671         }
 672
 673         mutex_lock(&ha->vport_lock);
 674         que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues);
 675         if (que_id >= ha->max_rsp_queues) {
 676                 mutex_unlock(&ha->vport_lock);
 677                 qla_printk(KERN_INFO, ha, "No resources to create "
 678                          "additional response queue\n");
 679                 goto que_failed;
 680         }
 681         set_bit(que_id, ha->rsp_qid_map);
 682
 683         if (ha->flags.msix_enabled)
 684                 rsp->msix = &ha->msix_entries[que_id + 1];
 685         else
 686                 qla_printk(KERN_WARNING, ha, "msix not enabled\n");
 687
 688         ha->rsp_q_map[que_id] = rsp;
 689         rsp->rid = rid;
 690         rsp->vp_idx = vp_idx;
 691         rsp->hw = ha;
 692         /* Use alternate PCI bus number */
 693         if (MSB(rsp->rid))
 694                 options |= BIT_4;
 695         /* Use alternate PCI devfn */
 696         if (LSB(rsp->rid))
 697                 options |= BIT_5;
 698         rsp->options = options;
 699         rsp->id = que_id;
 700         reg = ISP_QUE_REG(ha, que_id);
 701         rsp->rsp_q_in = &reg->isp25mq.rsp_q_in;
 702         rsp->rsp_q_out = &reg->isp25mq.rsp_q_out;
 703         mutex_unlock(&ha->vport_lock);
 704
 705         ret = qla25xx_request_irq(rsp);
 706         if (ret)
 707                 goto que_failed;
 708
 709         ret = qla25xx_init_rsp_que(base_vha, rsp);
 710         if (ret != QLA_SUCCESS) {
 711                 qla_printk(KERN_WARNING, ha, "%s failed\n", __func__);
 712                 mutex_lock(&ha->vport_lock);
 713                 clear_bit(que_id, ha->rsp_qid_map);
 714                 mutex_unlock(&ha->vport_lock);
 715                 goto que_failed;
 716         }
 717         if (req >= 0)
 718                 rsp->req = ha->req_q_map[req];
 719         else
 720                 rsp->req = NULL;
 721
 722         qla2x00_init_response_q_entries(rsp);
 723         if (rsp->hw->wq)
 724                 INIT_WORK(&rsp->q_work, qla_do_work);
 725         return rsp->id;
 726
 727 que_failed:
 728         qla25xx_free_rsp_que(base_vha, rsp);
 729         return 0;
 730 }
 731
 732 int
 733 qla25xx_create_queues(struct scsi_qla_host *vha, uint8_t qos)
 734 {
 735         uint16_t options = 0;
 736         uint8_t ret = 0;
 737         struct qla_hw_data *ha = vha->hw;
 738         struct rsp_que *rsp;
 739
 740         options |= BIT_1;
 741         ret = qla25xx_create_rsp_que(ha, options, vha->vp_idx, 0, -1);
 742         if (!ret) {
 743                 qla_printk(KERN_WARNING, ha, "Response Que create failed\n");
 744                 return ret;
 745         } else
 746                 qla_printk(KERN_INFO, ha, "Response Que:%d created.\n", ret);
 747         rsp = ha->rsp_q_map[ret];
 748
 749         options = 0;
 750         if (qos & BIT_7)
 751                 options |= BIT_8;
 752         ret = qla25xx_create_req_que(ha, options, vha->vp_idx, 0, ret,
 753                                         qos & ~BIT_7);
 754         if (ret) {
 755                 vha->req = ha->req_q_map[ret];
 756                 qla_printk(KERN_INFO, ha, "Request Que:%d created.\n", ret);
 757         } else
 758                 qla_printk(KERN_WARNING, ha, "Request Que create failed\n");
 759         rsp->req = ha->req_q_map[ret];
 760
 761         return ret;
 762 }