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 (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
 254                 /* VP acquired. complete port configuration */
 255                 if (atomic_read(&base_vha->loop_state) == LOOP_READY) {
 256                         qla24xx_configure_vp(vha);
 257                 } else {
 258                         set_bit(VP_IDX_ACQUIRED, &vha->vp_flags);
 259                         set_bit(VP_DPC_NEEDED, &base_vha->dpc_flags);
 260                 }
 261
 262                 return 0;
 263         }
 264
 265         if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
 266                 qla2x00_update_fcports(vha);
 267                 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
 268         }
 269
 270         if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) &&
 271                 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
 272                 atomic_read(&vha->loop_state) != LOOP_DOWN) {
 273
 274                 DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
 275                                                 vha->host_no));
 276                 qla2x00_relogin(vha);
 277
 278                 DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
 279                                                         vha->host_no));
 280         }
 281
 282         if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
 283             (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
 284                 clear_bit(RESET_ACTIVE, &vha->dpc_flags);
 285         }
 286
 287         if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
 288                 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
 289                         qla2x00_loop_resync(vha);
 290                         clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
 291                 }
 292         }
 293
 294         return 0;
 295 }
 296
 297 void
 298 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
 299 {
 300         int ret;
 301         struct qla_hw_data *ha = vha->hw;
 302         scsi_qla_host_t *vp;
 303         struct scsi_qla_host *tvp;
 304
 305         if (vha->vp_idx)
 306                 return;
 307         if (list_empty(&ha->vp_list))
 308                 return;
 309
 310         clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);
 311
 312         list_for_each_entry_safe(vp, tvp, &ha->vp_list, list) {
 313                 if (vp->vp_idx)
 314                         ret = qla2x00_do_dpc_vp(vp);
 315         }
 316 }
 317
 318 int
 319 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
 320 {
 321         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 322         struct qla_hw_data *ha = base_vha->hw;
 323         scsi_qla_host_t *vha;
 324         uint8_t port_name[WWN_SIZE];
 325
 326         if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
 327                 return VPCERR_UNSUPPORTED;
 328
 329         /* Check up the F/W and H/W support NPIV */
 330         if (!ha->flags.npiv_supported)
 331                 return VPCERR_UNSUPPORTED;
 332
 333         /* Check up whether npiv supported switch presented */
 334         if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
 335                 return VPCERR_NO_FABRIC_SUPP;
 336
 337         /* Check up unique WWPN */
 338         u64_to_wwn(fc_vport->port_name, port_name);
 339         if (!memcmp(port_name, base_vha->port_name, WWN_SIZE))
 340                 return VPCERR_BAD_WWN;
 341         vha = qla24xx_find_vhost_by_name(ha, port_name);
 342         if (vha)
 343                 return VPCERR_BAD_WWN;
 344
 345         /* Check up max-npiv-supports */
 346         if (ha->num_vhosts > ha->max_npiv_vports) {
 347                 DEBUG15(printk("scsi(%ld): num_vhosts %ud is bigger than "
 348                     "max_npv_vports %ud.\n", base_vha->host_no,
 349                     ha->num_vhosts, ha->max_npiv_vports));
 350                 return VPCERR_UNSUPPORTED;
 351         }
 352         return 0;
 353 }
 354
 355 scsi_qla_host_t *
 356 qla24xx_create_vhost(struct fc_vport *fc_vport)
 357 {
 358         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 359         struct qla_hw_data *ha = base_vha->hw;
 360         scsi_qla_host_t *vha;
 361         struct scsi_host_template *sht = &qla2xxx_driver_template;
 362         struct Scsi_Host *host;
 363
 364         vha = qla2x00_create_host(sht, ha);
 365         if (!vha) {
 366                 DEBUG(printk("qla2xxx: scsi_host_alloc() failed for vport\n"));
 367                 return(NULL);
 368         }
 369
 370         host = vha->host;
 371         fc_vport->dd_data = vha;
 372         /* New host info */
 373         u64_to_wwn(fc_vport->node_name, vha->node_name);
 374         u64_to_wwn(fc_vport->port_name, vha->port_name);
 375
 376         vha->fc_vport = fc_vport;
 377         vha->device_flags = 0;
 378         vha->vp_idx = qla24xx_allocate_vp_id(vha);
 379         if (vha->vp_idx > ha->max_npiv_vports) {
 380                 DEBUG15(printk("scsi(%ld): Couldn't allocate vp_id.\n",
 381                         vha->host_no));
 382                 goto create_vhost_failed;
 383         }
 384         vha->mgmt_svr_loop_id = 10 + vha->vp_idx;
 385
 386         vha->dpc_flags = 0L;
 387         set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 388         set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 389
 390         /*
 391          * To fix the issue of processing a parent's RSCN for the vport before
 392          * its SCR is complete.
 393          */
 394         set_bit(VP_SCR_NEEDED, &vha->vp_flags);
 395         atomic_set(&vha->loop_state, LOOP_DOWN);
 396         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 397
 398         qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);
 399
 400         vha->req = base_vha->req;
 401         host->can_queue = base_vha->req->length + 128;
 402         host->this_id = 255;
 403         host->cmd_per_lun = 3;
 404         host->max_cmd_len = MAX_CMDSZ;
 405         host->max_channel = MAX_BUSES - 1;
 406         host->max_lun = MAX_LUNS;
 407         host->unique_id = host->host_no;
 408         host->max_id = MAX_TARGETS_2200;
 409         host->transportt = qla2xxx_transport_vport_template;
 410
 411         DEBUG15(printk("DEBUG: detect vport hba %ld at address = %p\n",
 412             vha->host_no, vha));
 413
 414         vha->flags.init_done = 1;
 415
 416         return vha;
 417
 418 create_vhost_failed:
 419         return NULL;
 420 }
 421
 422 static void
 423 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req)
 424 {
 425         struct qla_hw_data *ha = vha->hw;
 426         uint16_t que_id = req->id;
 427
 428         dma_free_coherent(&ha->pdev->dev, (req->length + 1) *
 429                 sizeof(request_t), req->ring, req->dma);
 430         req->ring = NULL;
 431         req->dma = 0;
 432         if (que_id) {
 433                 ha->req_q_map[que_id] = NULL;
 434                 mutex_lock(&ha->vport_lock);
 435                 clear_bit(que_id, ha->req_qid_map);
 436                 mutex_unlock(&ha->vport_lock);
 437         }
 438         kfree(req);
 439         req = NULL;
 440 }
 441
 442 static void
 443 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 444 {
 445         struct qla_hw_data *ha = vha->hw;
 446         uint16_t que_id = rsp->id;
 447
 448         if (rsp->msix && rsp->msix->have_irq) {
 449                 free_irq(rsp->msix->vector, rsp);
 450                 rsp->msix->have_irq = 0;
 451                 rsp->msix->rsp = NULL;
 452         }
 453         dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) *
 454                 sizeof(response_t), rsp->ring, rsp->dma);
 455         rsp->ring = NULL;
 456         rsp->dma = 0;
 457         if (que_id) {
 458                 ha->rsp_q_map[que_id] = NULL;
 459                 mutex_lock(&ha->vport_lock);
 460                 clear_bit(que_id, ha->rsp_qid_map);
 461                 mutex_unlock(&ha->vport_lock);
 462         }
 463         kfree(rsp);
 464         rsp = NULL;
 465 }
 466
 467 int
 468 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
 469 {
 470         int ret = -1;
 471
 472         if (req) {
 473                 req->options |= BIT_0;
 474                 ret = qla25xx_init_req_que(vha, req);
 475         }
 476         if (ret == QLA_SUCCESS)
 477                 qla25xx_free_req_que(vha, req);
 478
 479         return ret;
 480 }
 481
 482 int
 483 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 484 {
 485         int ret = -1;
 486
 487         if (rsp) {
 488                 rsp->options |= BIT_0;
 489                 ret = qla25xx_init_rsp_que(vha, rsp);
 490         }
 491         if (ret == QLA_SUCCESS)
 492                 qla25xx_free_rsp_que(vha, rsp);
 493
 494         return ret;
 495 }
 496
 497 int qla25xx_update_req_que(struct scsi_qla_host *vha, uint8_t que, uint8_t qos)
 498 {
 499         int ret = 0;
 500         struct qla_hw_data *ha = vha->hw;
 501         struct req_que *req = ha->req_q_map[que];
 502
 503         req->options |= BIT_3;
 504         req->qos = qos;
 505         ret = qla25xx_init_req_que(vha, req);
 506         if (ret != QLA_SUCCESS)
 507                 DEBUG2_17(printk(KERN_WARNING "%s failed\n", __func__));
 508         /* restore options bit */
 509         req->options &= ~BIT_3;
 510         return ret;
 511 }
 512
 513
 514 /* Delete all queues for a given vhost */
 515 int
 516 qla25xx_delete_queues(struct scsi_qla_host *vha)
 517 {
 518         int cnt, ret = 0;
 519         struct req_que *req = NULL;
 520         struct rsp_que *rsp = NULL;
 521         struct qla_hw_data *ha = vha->hw;
 522
 523         /* Delete request queues */
 524         for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
 525                 req = ha->req_q_map[cnt];
 526                 if (req) {
 527                         ret = qla25xx_delete_req_que(vha, req);
 528                         if (ret != QLA_SUCCESS) {
 529                                 qla_printk(KERN_WARNING, ha,
 530                                 "Couldn't delete req que %d\n",
 531                                 req->id);
 532                                 return ret;
 533                         }
 534                 }
 535         }
 536
 537         /* Delete response queues */
 538         for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) {
 539                 rsp = ha->rsp_q_map[cnt];
 540                 if (rsp) {
 541                         ret = qla25xx_delete_rsp_que(vha, rsp);
 542                         if (ret != QLA_SUCCESS) {
 543                                 qla_printk(KERN_WARNING, ha,
 544                                 "Couldn't delete rsp que %d\n",
 545                                 rsp->id);
 546                                 return ret;
 547                         }
 548                 }
 549         }
 550         return ret;
 551 }
 552
 553 int
 554 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
 555         uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos)
 556 {
 557         int ret = 0;
 558         struct req_que *req = NULL;
 559         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 560         uint16_t que_id = 0;
 561         device_reg_t __iomem *reg;
 562         uint32_t cnt;
 563
 564         req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
 565         if (req == NULL) {
 566                 qla_printk(KERN_WARNING, ha, "could not allocate memory"
 567                         "for request que\n");
 568                 goto que_failed;
 569         }
 570
 571         req->length = REQUEST_ENTRY_CNT_24XX;
 572         req->ring = dma_alloc_coherent(&ha->pdev->dev,
 573                         (req->length + 1) * sizeof(request_t),
 574                         &req->dma, GFP_KERNEL);
 575         if (req->ring == NULL) {
 576                 qla_printk(KERN_WARNING, ha,
 577                 "Memory Allocation failed - request_ring\n");
 578                 goto que_failed;
 579         }
 580
 581         mutex_lock(&ha->vport_lock);
 582         que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues);
 583         if (que_id >= ha->max_req_queues) {
 584                 mutex_unlock(&ha->vport_lock);
 585                 qla_printk(KERN_INFO, ha, "No resources to create "
 586                          "additional request queue\n");
 587                 goto que_failed;
 588         }
 589         set_bit(que_id, ha->req_qid_map);
 590         ha->req_q_map[que_id] = req;
 591         req->rid = rid;
 592         req->vp_idx = vp_idx;
 593         req->qos = qos;
 594
 595         if (rsp_que < 0)
 596                 req->rsp = NULL;
 597         else
 598                 req->rsp = ha->rsp_q_map[rsp_que];
 599         /* Use alternate PCI bus number */
 600         if (MSB(req->rid))
 601                 options |= BIT_4;
 602         /* Use alternate PCI devfn */
 603         if (LSB(req->rid))
 604                 options |= BIT_5;
 605         req->options = options;
 606
 607         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++)
 608                 req->outstanding_cmds[cnt] = NULL;
 609         req->current_outstanding_cmd = 1;
 610
 611         req->ring_ptr = req->ring;
 612         req->ring_index = 0;
 613         req->cnt = req->length;
 614         req->id = que_id;
 615         reg = ISP_QUE_REG(ha, que_id);
 616         req->max_q_depth = ha->req_q_map[0]->max_q_depth;
 617         mutex_unlock(&ha->vport_lock);
 618
 619         ret = qla25xx_init_req_que(base_vha, req);
 620         if (ret != QLA_SUCCESS) {
 621                 qla_printk(KERN_WARNING, ha, "%s failed\n", __func__);
 622                 mutex_lock(&ha->vport_lock);
 623                 clear_bit(que_id, ha->req_qid_map);
 624                 mutex_unlock(&ha->vport_lock);
 625                 goto que_failed;
 626         }
 627
 628         return req->id;
 629
 630 que_failed:
 631         qla25xx_free_req_que(base_vha, req);
 632         return 0;
 633 }
 634
 635 static void qla_do_work(struct work_struct *work)
 636 {
 637         struct rsp_que *rsp = container_of(work, struct rsp_que, q_work);
 638         struct scsi_qla_host *vha;
 639
 640         vha = qla25xx_get_host(rsp);
 641         qla24xx_process_response_queue(vha, rsp);
 642 }
 643
 644 /* create response queue */
 645 int
 646 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
 647         uint8_t vp_idx, uint16_t rid, int req)
 648 {
 649         int ret = 0;
 650         struct rsp_que *rsp = NULL;
 651         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 652         uint16_t que_id = 0;
 653         device_reg_t __iomem *reg;
 654
 655         rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
 656         if (rsp == NULL) {
 657                 qla_printk(KERN_WARNING, ha, "could not allocate memory for"
 658                                 " response que\n");
 659                 goto que_failed;
 660         }
 661
 662         rsp->length = RESPONSE_ENTRY_CNT_MQ;
 663         rsp->ring = dma_alloc_coherent(&ha->pdev->dev,
 664                         (rsp->length + 1) * sizeof(response_t),
 665                         &rsp->dma, GFP_KERNEL);
 666         if (rsp->ring == NULL) {
 667                 qla_printk(KERN_WARNING, ha,
 668                 "Memory Allocation failed - response_ring\n");
 669                 goto que_failed;
 670         }
 671
 672         mutex_lock(&ha->vport_lock);
 673         que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues);
 674         if (que_id >= ha->max_rsp_queues) {
 675                 mutex_unlock(&ha->vport_lock);
 676                 qla_printk(KERN_INFO, ha, "No resources to create "
 677                          "additional response queue\n");
 678                 goto que_failed;
 679         }
 680         set_bit(que_id, ha->rsp_qid_map);
 681
 682         if (ha->flags.msix_enabled)
 683                 rsp->msix = &ha->msix_entries[que_id + 1];
 684         else
 685                 qla_printk(KERN_WARNING, ha, "msix not enabled\n");
 686
 687         ha->rsp_q_map[que_id] = rsp;
 688         rsp->rid = rid;
 689         rsp->vp_idx = vp_idx;
 690         rsp->hw = ha;
 691         /* Use alternate PCI bus number */
 692         if (MSB(rsp->rid))
 693                 options |= BIT_4;
 694         /* Use alternate PCI devfn */
 695         if (LSB(rsp->rid))
 696                 options |= BIT_5;
 697         rsp->options = options;
 698         rsp->id = que_id;
 699         reg = ISP_QUE_REG(ha, que_id);
 700         rsp->rsp_q_in = &reg->isp25mq.rsp_q_in;
 701         rsp->rsp_q_out = &reg->isp25mq.rsp_q_out;
 702         mutex_unlock(&ha->vport_lock);
 703
 704         ret = qla25xx_request_irq(rsp);
 705         if (ret)
 706                 goto que_failed;
 707
 708         ret = qla25xx_init_rsp_que(base_vha, rsp);
 709         if (ret != QLA_SUCCESS) {
 710                 qla_printk(KERN_WARNING, ha, "%s failed\n", __func__);
 711                 mutex_lock(&ha->vport_lock);
 712                 clear_bit(que_id, ha->rsp_qid_map);
 713                 mutex_unlock(&ha->vport_lock);
 714                 goto que_failed;
 715         }
 716         if (req >= 0)
 717                 rsp->req = ha->req_q_map[req];
 718         else
 719                 rsp->req = NULL;
 720
 721         qla2x00_init_response_q_entries(rsp);
 722         if (rsp->hw->wq)
 723                 INIT_WORK(&rsp->q_work, qla_do_work);
 724         return rsp->id;
 725
 726 que_failed:
 727         qla25xx_free_rsp_que(base_vha, rsp);
 728         return 0;
 729 }
 730
 731 int
 732 qla25xx_create_queues(struct scsi_qla_host *vha, uint8_t qos)
 733 {
 734         uint16_t options = 0;
 735         uint8_t ret = 0;
 736         struct qla_hw_data *ha = vha->hw;
 737         struct rsp_que *rsp;
 738
 739         options |= BIT_1;
 740         ret = qla25xx_create_rsp_que(ha, options, vha->vp_idx, 0, -1);
 741         if (!ret) {
 742                 qla_printk(KERN_WARNING, ha, "Response Que create failed\n");
 743                 return ret;
 744         } else
 745                 qla_printk(KERN_INFO, ha, "Response Que:%d created.\n", ret);
 746         rsp = ha->rsp_q_map[ret];
 747
 748         options = 0;
 749         if (qos & BIT_7)
 750                 options |= BIT_8;
 751         ret = qla25xx_create_req_que(ha, options, vha->vp_idx, 0, ret,
 752                                         qos & ~BIT_7);
 753         if (ret) {
 754                 vha->req = ha->req_q_map[ret];
 755                 qla_printk(KERN_INFO, ha, "Request Que:%d created.\n", ret);
 756         } else
 757                 qla_printk(KERN_WARNING, ha, "Request Que create failed\n");
 758         rsp->req = ha->req_q_map[ret];
 759
 760         return ret;
 761 }