drivers/scsi/qla2xxx/qla_mid.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2014 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8 #include "qla_gbl.h"
   9 #include "qla_target.h"
  10
  11 #include <linux/moduleparam.h>
  12 #include <linux/vmalloc.h>
  13 #include <linux/slab.h>
  14 #include <linux/list.h>
  15
  16 #include <scsi/scsi_tcq.h>
  17 #include <scsi/scsicam.h>
  18 #include <linux/delay.h>
  19
  20 void
  21 qla2x00_vp_stop_timer(scsi_qla_host_t *vha)
  22 {
  23         if (vha->vp_idx && vha->timer_active) {
  24                 del_timer_sync(&vha->timer);
  25                 vha->timer_active = 0;
  26         }
  27 }
  28
  29 static uint32_t
  30 qla24xx_allocate_vp_id(scsi_qla_host_t *vha)
  31 {
  32         uint32_t vp_id;
  33         struct qla_hw_data *ha = vha->hw;
  34         unsigned long flags;
  35
  36         /* Find an empty slot and assign an vp_id */
  37         mutex_lock(&ha->vport_lock);
  38         vp_id = find_first_zero_bit(ha->vp_idx_map, ha->max_npiv_vports + 1);
  39         if (vp_id > ha->max_npiv_vports) {
  40                 ql_dbg(ql_dbg_vport, vha, 0xa000,
  41                     "vp_id %d is bigger than max-supported %d.\n",
  42                     vp_id, ha->max_npiv_vports);
  43                 mutex_unlock(&ha->vport_lock);
  44                 return vp_id;
  45         }
  46
  47         set_bit(vp_id, ha->vp_idx_map);
  48         ha->num_vhosts++;
  49         vha->vp_idx = vp_id;
  50
  51         spin_lock_irqsave(&ha->vport_slock, flags);
  52         list_add_tail(&vha->list, &ha->vp_list);
  53
  54         qlt_update_vp_map(vha, SET_VP_IDX);
  55
  56         spin_unlock_irqrestore(&ha->vport_slock, flags);
  57
  58         mutex_unlock(&ha->vport_lock);
  59         return vp_id;
  60 }
  61
  62 void
  63 qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
  64 {
  65         uint16_t vp_id;
  66         struct qla_hw_data *ha = vha->hw;
  67         unsigned long flags = 0;
  68
  69         mutex_lock(&ha->vport_lock);
  70         /*
  71          * Wait for all pending activities to finish before removing vport from
  72          * the list.
  73          * Lock needs to be held for safe removal from the list (it
  74          * ensures no active vp_list traversal while the vport is removed
  75          * from the queue)
  76          */
  77         wait_event_timeout(vha->vref_waitq, atomic_read(&vha->vref_count),
  78             10*HZ);
  79
  80         spin_lock_irqsave(&ha->vport_slock, flags);
  81         if (atomic_read(&vha->vref_count)) {
  82                 ql_dbg(ql_dbg_vport, vha, 0xfffa,
  83                     "vha->vref_count=%u timeout\n", vha->vref_count.counter);
  84                 vha->vref_count = (atomic_t)ATOMIC_INIT(0);
  85         }
  86         list_del(&vha->list);
  87         qlt_update_vp_map(vha, RESET_VP_IDX);
  88         spin_unlock_irqrestore(&ha->vport_slock, flags);
  89
  90         vp_id = vha->vp_idx;
  91         ha->num_vhosts--;
  92         clear_bit(vp_id, ha->vp_idx_map);
  93
  94         mutex_unlock(&ha->vport_lock);
  95 }
  96
  97 static scsi_qla_host_t *
  98 qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name)
  99 {
 100         scsi_qla_host_t *vha;
 101         struct scsi_qla_host *tvha;
 102         unsigned long flags;
 103
 104         spin_lock_irqsave(&ha->vport_slock, flags);
 105         /* Locate matching device in database. */
 106         list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
 107                 if (!memcmp(port_name, vha->port_name, WWN_SIZE)) {
 108                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 109                         return vha;
 110                 }
 111         }
 112         spin_unlock_irqrestore(&ha->vport_slock, flags);
 113         return NULL;
 114 }
 115
 116 /*
 117  * qla2x00_mark_vp_devices_dead
 118  *      Updates fcport state when device goes offline.
 119  *
 120  * Input:
 121  *      ha = adapter block pointer.
 122  *      fcport = port structure pointer.
 123  *
 124  * Return:
 125  *      None.
 126  *
 127  * Context:
 128  */
 129 static void
 130 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
 131 {
 132         /*
 133          * !!! NOTE !!!
 134          * This function, if called in contexts other than vp create, disable
 135          * or delete, please make sure this is synchronized with the
 136          * delete thread.
 137          */
 138         fc_port_t *fcport;
 139
 140         list_for_each_entry(fcport, &vha->vp_fcports, list) {
 141                 ql_dbg(ql_dbg_vport, vha, 0xa001,
 142                     "Marking port dead, loop_id=0x%04x : %x.\n",
 143                     fcport->loop_id, fcport->vha->vp_idx);
 144
 145                 qla2x00_mark_device_lost(vha, fcport, 0, 0);
 146                 qla2x00_set_fcport_state(fcport, FCS_UNCONFIGURED);
 147         }
 148 }
 149
 150 int
 151 qla24xx_disable_vp(scsi_qla_host_t *vha)
 152 {
 153         unsigned long flags;
 154         int ret;
 155
 156         ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 157         atomic_set(&vha->loop_state, LOOP_DOWN);
 158         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 159
 160         /* Remove port id from vp target map */
 161         spin_lock_irqsave(&vha->hw->vport_slock, flags);
 162         qlt_update_vp_map(vha, RESET_AL_PA);
 163         spin_unlock_irqrestore(&vha->hw->vport_slock, flags);
 164
 165         qla2x00_mark_vp_devices_dead(vha);
 166         atomic_set(&vha->vp_state, VP_FAILED);
 167         vha->flags.management_server_logged_in = 0;
 168         if (ret == QLA_SUCCESS) {
 169                 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
 170         } else {
 171                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 172                 return -1;
 173         }
 174         return 0;
 175 }
 176
 177 int
 178 qla24xx_enable_vp(scsi_qla_host_t *vha)
 179 {
 180         int ret;
 181         struct qla_hw_data *ha = vha->hw;
 182         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 183
 184         /* Check if physical ha port is Up */
 185         if (atomic_read(&base_vha->loop_state) == LOOP_DOWN  ||
 186                 atomic_read(&base_vha->loop_state) == LOOP_DEAD ||
 187                 !(ha->current_topology & ISP_CFG_F)) {
 188                 vha->vp_err_state =  VP_ERR_PORTDWN;
 189                 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
 190                 goto enable_failed;
 191         }
 192
 193         /* Initialize the new vport unless it is a persistent port */
 194         mutex_lock(&ha->vport_lock);
 195         ret = qla24xx_modify_vp_config(vha);
 196         mutex_unlock(&ha->vport_lock);
 197
 198         if (ret != QLA_SUCCESS) {
 199                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 200                 goto enable_failed;
 201         }
 202
 203         ql_dbg(ql_dbg_taskm, vha, 0x801a,
 204             "Virtual port with id: %d - Enabled.\n", vha->vp_idx);
 205         return 0;
 206
 207 enable_failed:
 208         ql_dbg(ql_dbg_taskm, vha, 0x801b,
 209             "Virtual port with id: %d - Disabled.\n", vha->vp_idx);
 210         return 1;
 211 }
 212
 213 static void
 214 qla24xx_configure_vp(scsi_qla_host_t *vha)
 215 {
 216         struct fc_vport *fc_vport;
 217         int ret;
 218
 219         fc_vport = vha->fc_vport;
 220
 221         ql_dbg(ql_dbg_vport, vha, 0xa002,
 222             "%s: change request #3.\n", __func__);
 223         ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
 224         if (ret != QLA_SUCCESS) {
 225                 ql_dbg(ql_dbg_vport, vha, 0xa003, "Failed to enable "
 226                     "receiving of RSCN requests: 0x%x.\n", ret);
 227                 return;
 228         } else {
 229                 /* Corresponds to SCR enabled */
 230                 clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
 231         }
 232
 233         vha->flags.online = 1;
 234         if (qla24xx_configure_vhba(vha))
 235                 return;
 236
 237         atomic_set(&vha->vp_state, VP_ACTIVE);
 238         fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
 239 }
 240
 241 void
 242 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
 243 {
 244         scsi_qla_host_t *vha;
 245         struct qla_hw_data *ha = rsp->hw;
 246         int i = 0;
 247         unsigned long flags;
 248
 249         spin_lock_irqsave(&ha->vport_slock, flags);
 250         list_for_each_entry(vha, &ha->vp_list, list) {
 251                 if (vha->vp_idx) {
 252                         atomic_inc(&vha->vref_count);
 253                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 254
 255                         switch (mb[0]) {
 256                         case MBA_LIP_OCCURRED:
 257                         case MBA_LOOP_UP:
 258                         case MBA_LOOP_DOWN:
 259                         case MBA_LIP_RESET:
 260                         case MBA_POINT_TO_POINT:
 261                         case MBA_CHG_IN_CONNECTION:
 262                         case MBA_PORT_UPDATE:
 263                         case MBA_RSCN_UPDATE:
 264                                 ql_dbg(ql_dbg_async, vha, 0x5024,
 265                                     "Async_event for VP[%d], mb=0x%x vha=%p.\n",
 266                                     i, *mb, vha);
 267                                 qla2x00_async_event(vha, rsp, mb);
 268                                 break;
 269                         }
 270
 271                         spin_lock_irqsave(&ha->vport_slock, flags);
 272                         atomic_dec(&vha->vref_count);
 273                         wake_up(&vha->vref_waitq);
 274                 }
 275                 i++;
 276         }
 277         spin_unlock_irqrestore(&ha->vport_slock, flags);
 278 }
 279
 280 int
 281 qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
 282 {
 283         /*
 284          * Physical port will do most of the abort and recovery work. We can
 285          * just treat it as a loop down
 286          */
 287         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 288                 atomic_set(&vha->loop_state, LOOP_DOWN);
 289                 qla2x00_mark_all_devices_lost(vha, 0);
 290         } else {
 291                 if (!atomic_read(&vha->loop_down_timer))
 292                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 293         }
 294
 295         /*
 296          * To exclusively reset vport, we need to log it out first.  Note: this
 297          * control_vp can fail if ISP reset is already issued, this is
 298          * expected, as the vp would be already logged out due to ISP reset.
 299          */
 300         if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
 301                 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 302
 303         ql_dbg(ql_dbg_taskm, vha, 0x801d,
 304             "Scheduling enable of Vport %d.\n", vha->vp_idx);
 305         return qla24xx_enable_vp(vha);
 306 }
 307
 308 static int
 309 qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
 310 {
 311         struct qla_hw_data *ha = vha->hw;
 312         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 313
 314         ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x4012,
 315             "Entering %s vp_flags: 0x%lx.\n", __func__, vha->vp_flags);
 316
 317         qla2x00_do_work(vha);
 318
 319         /* Check if Fw is ready to configure VP first */
 320         if (test_bit(VP_CONFIG_OK, &base_vha->vp_flags)) {
 321                 if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
 322                         /* VP acquired. complete port configuration */
 323                         ql_dbg(ql_dbg_dpc, vha, 0x4014,
 324                             "Configure VP scheduled.\n");
 325                         qla24xx_configure_vp(vha);
 326                         ql_dbg(ql_dbg_dpc, vha, 0x4015,
 327                             "Configure VP end.\n");
 328                         return 0;
 329                 }
 330         }
 331
 332         if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
 333                 ql_dbg(ql_dbg_dpc, vha, 0x4016,
 334                     "FCPort update scheduled.\n");
 335                 qla2x00_update_fcports(vha);
 336                 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
 337                 ql_dbg(ql_dbg_dpc, vha, 0x4017,
 338                     "FCPort update end.\n");
 339         }
 340
 341         if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) &&
 342                 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
 343                 atomic_read(&vha->loop_state) != LOOP_DOWN) {
 344
 345                 ql_dbg(ql_dbg_dpc, vha, 0x4018,
 346                     "Relogin needed scheduled.\n");
 347                 qla2x00_relogin(vha);
 348                 ql_dbg(ql_dbg_dpc, vha, 0x4019,
 349                     "Relogin needed end.\n");
 350         }
 351
 352         if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
 353             (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
 354                 clear_bit(RESET_ACTIVE, &vha->dpc_flags);
 355         }
 356
 357         if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
 358                 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
 359                         ql_dbg(ql_dbg_dpc, vha, 0x401a,
 360                             "Loop resync scheduled.\n");
 361                         qla2x00_loop_resync(vha);
 362                         clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
 363                         ql_dbg(ql_dbg_dpc, vha, 0x401b,
 364                             "Loop resync end.\n");
 365                 }
 366         }
 367
 368         ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x401c,
 369             "Exiting %s.\n", __func__);
 370         return 0;
 371 }
 372
 373 void
 374 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
 375 {
 376         struct qla_hw_data *ha = vha->hw;
 377         scsi_qla_host_t *vp;
 378         unsigned long flags = 0;
 379
 380         if (vha->vp_idx)
 381                 return;
 382         if (list_empty(&ha->vp_list))
 383                 return;
 384
 385         clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);
 386
 387         if (!(ha->current_topology & ISP_CFG_F))
 388                 return;
 389
 390         spin_lock_irqsave(&ha->vport_slock, flags);
 391         list_for_each_entry(vp, &ha->vp_list, list) {
 392                 if (vp->vp_idx) {
 393                         atomic_inc(&vp->vref_count);
 394                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 395
 396                         qla2x00_do_dpc_vp(vp);
 397
 398                         spin_lock_irqsave(&ha->vport_slock, flags);
 399                         atomic_dec(&vp->vref_count);
 400                 }
 401         }
 402         spin_unlock_irqrestore(&ha->vport_slock, flags);
 403 }
 404
 405 int
 406 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
 407 {
 408         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 409         struct qla_hw_data *ha = base_vha->hw;
 410         scsi_qla_host_t *vha;
 411         uint8_t port_name[WWN_SIZE];
 412
 413         if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
 414                 return VPCERR_UNSUPPORTED;
 415
 416         /* Check up the F/W and H/W support NPIV */
 417         if (!ha->flags.npiv_supported)
 418                 return VPCERR_UNSUPPORTED;
 419
 420         /* Check up whether npiv supported switch presented */
 421         if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
 422                 return VPCERR_NO_FABRIC_SUPP;
 423
 424         /* Check up unique WWPN */
 425         u64_to_wwn(fc_vport->port_name, port_name);
 426         if (!memcmp(port_name, base_vha->port_name, WWN_SIZE))
 427                 return VPCERR_BAD_WWN;
 428         vha = qla24xx_find_vhost_by_name(ha, port_name);
 429         if (vha)
 430                 return VPCERR_BAD_WWN;
 431
 432         /* Check up max-npiv-supports */
 433         if (ha->num_vhosts > ha->max_npiv_vports) {
 434                 ql_dbg(ql_dbg_vport, vha, 0xa004,
 435                     "num_vhosts %ud is bigger "
 436                     "than max_npiv_vports %ud.\n",
 437                     ha->num_vhosts, ha->max_npiv_vports);
 438                 return VPCERR_UNSUPPORTED;
 439         }
 440         return 0;
 441 }
 442
 443 scsi_qla_host_t *
 444 qla24xx_create_vhost(struct fc_vport *fc_vport)
 445 {
 446         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 447         struct qla_hw_data *ha = base_vha->hw;
 448         scsi_qla_host_t *vha;
 449         struct scsi_host_template *sht = &qla2xxx_driver_template;
 450         struct Scsi_Host *host;
 451
 452         vha = qla2x00_create_host(sht, ha);
 453         if (!vha) {
 454                 ql_log(ql_log_warn, vha, 0xa005,
 455                     "scsi_host_alloc() failed for vport.\n");
 456                 return(NULL);
 457         }
 458
 459         host = vha->host;
 460         fc_vport->dd_data = vha;
 461         /* New host info */
 462         u64_to_wwn(fc_vport->node_name, vha->node_name);
 463         u64_to_wwn(fc_vport->port_name, vha->port_name);
 464
 465         vha->fc_vport = fc_vport;
 466         vha->device_flags = 0;
 467         vha->vp_idx = qla24xx_allocate_vp_id(vha);
 468         if (vha->vp_idx > ha->max_npiv_vports) {
 469                 ql_dbg(ql_dbg_vport, vha, 0xa006,
 470                     "Couldn't allocate vp_id.\n");
 471                 goto create_vhost_failed;
 472         }
 473         vha->mgmt_svr_loop_id = 10 + vha->vp_idx;
 474
 475         vha->dpc_flags = 0L;
 476
 477         /*
 478          * To fix the issue of processing a parent's RSCN for the vport before
 479          * its SCR is complete.
 480          */
 481         set_bit(VP_SCR_NEEDED, &vha->vp_flags);
 482         atomic_set(&vha->loop_state, LOOP_DOWN);
 483         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 484
 485         qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);
 486
 487         vha->req = base_vha->req;
 488         host->can_queue = base_vha->req->length + 128;
 489         host->cmd_per_lun = 3;
 490         if (IS_T10_PI_CAPABLE(ha) && ql2xenabledif)
 491                 host->max_cmd_len = 32;
 492         else
 493                 host->max_cmd_len = MAX_CMDSZ;
 494         host->max_channel = MAX_BUSES - 1;
 495         host->max_lun = ql2xmaxlun;
 496         host->unique_id = host->host_no;
 497         host->max_id = ha->max_fibre_devices;
 498         host->transportt = qla2xxx_transport_vport_template;
 499
 500         ql_dbg(ql_dbg_vport, vha, 0xa007,
 501             "Detect vport hba %ld at address = %p.\n",
 502             vha->host_no, vha);
 503
 504         vha->flags.init_done = 1;
 505
 506         mutex_lock(&ha->vport_lock);
 507         set_bit(vha->vp_idx, ha->vp_idx_map);
 508         ha->cur_vport_count++;
 509         mutex_unlock(&ha->vport_lock);
 510
 511         return vha;
 512
 513 create_vhost_failed:
 514         return NULL;
 515 }
 516
 517 static void
 518 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req)
 519 {
 520         struct qla_hw_data *ha = vha->hw;
 521         uint16_t que_id = req->id;
 522
 523         dma_free_coherent(&ha->pdev->dev, (req->length + 1) *
 524                 sizeof(request_t), req->ring, req->dma);
 525         req->ring = NULL;
 526         req->dma = 0;
 527         if (que_id) {
 528                 ha->req_q_map[que_id] = NULL;
 529                 mutex_lock(&ha->vport_lock);
 530                 clear_bit(que_id, ha->req_qid_map);
 531                 mutex_unlock(&ha->vport_lock);
 532         }
 533         kfree(req->outstanding_cmds);
 534         kfree(req);
 535         req = NULL;
 536 }
 537
 538 static void
 539 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 540 {
 541         struct qla_hw_data *ha = vha->hw;
 542         uint16_t que_id = rsp->id;
 543
 544         if (rsp->msix && rsp->msix->have_irq) {
 545                 free_irq(rsp->msix->vector, rsp->msix->handle);
 546                 rsp->msix->have_irq = 0;
 547                 rsp->msix->in_use = 0;
 548                 rsp->msix->handle = NULL;
 549         }
 550         dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) *
 551                 sizeof(response_t), rsp->ring, rsp->dma);
 552         rsp->ring = NULL;
 553         rsp->dma = 0;
 554         if (que_id) {
 555                 ha->rsp_q_map[que_id] = NULL;
 556                 mutex_lock(&ha->vport_lock);
 557                 clear_bit(que_id, ha->rsp_qid_map);
 558                 mutex_unlock(&ha->vport_lock);
 559         }
 560         kfree(rsp);
 561         rsp = NULL;
 562 }
 563
 564 int
 565 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
 566 {
 567         int ret = -1;
 568
 569         if (req) {
 570                 req->options |= BIT_0;
 571                 ret = qla25xx_init_req_que(vha, req);
 572         }
 573         if (ret == QLA_SUCCESS)
 574                 qla25xx_free_req_que(vha, req);
 575
 576         return ret;
 577 }
 578
 579 int
 580 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 581 {
 582         int ret = -1;
 583
 584         if (rsp) {
 585                 rsp->options |= BIT_0;
 586                 ret = qla25xx_init_rsp_que(vha, rsp);
 587         }
 588         if (ret == QLA_SUCCESS)
 589                 qla25xx_free_rsp_que(vha, rsp);
 590
 591         return ret;
 592 }
 593
 594 /* Delete all queues for a given vhost */
 595 int
 596 qla25xx_delete_queues(struct scsi_qla_host *vha)
 597 {
 598         int cnt, ret = 0;
 599         struct req_que *req = NULL;
 600         struct rsp_que *rsp = NULL;
 601         struct qla_hw_data *ha = vha->hw;
 602         struct qla_qpair *qpair, *tqpair;
 603
 604         if (ql2xmqsupport) {
 605                 list_for_each_entry_safe(qpair, tqpair, &vha->qp_list,
 606                     qp_list_elem)
 607                         qla2xxx_delete_qpair(vha, qpair);
 608         } else {
 609                 /* Delete request queues */
 610                 for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
 611                         req = ha->req_q_map[cnt];
 612                         if (req && test_bit(cnt, ha->req_qid_map)) {
 613                                 ret = qla25xx_delete_req_que(vha, req);
 614                                 if (ret != QLA_SUCCESS) {
 615                                         ql_log(ql_log_warn, vha, 0x00ea,
 616                                             "Couldn't delete req que %d.\n",
 617                                             req->id);
 618                                         return ret;
 619                                 }
 620                         }
 621                 }
 622
 623                 /* Delete response queues */
 624                 for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) {
 625                         rsp = ha->rsp_q_map[cnt];
 626                         if (rsp && test_bit(cnt, ha->rsp_qid_map)) {
 627                                 ret = qla25xx_delete_rsp_que(vha, rsp);
 628                                 if (ret != QLA_SUCCESS) {
 629                                         ql_log(ql_log_warn, vha, 0x00eb,
 630                                             "Couldn't delete rsp que %d.\n",
 631                                             rsp->id);
 632                                         return ret;
 633                                 }
 634                         }
 635                 }
 636         }
 637
 638         return ret;
 639 }
 640
 641 int
 642 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
 643         uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos)
 644 {
 645         int ret = 0;
 646         struct req_que *req = NULL;
 647         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 648         uint16_t que_id = 0;
 649         device_reg_t *reg;
 650         uint32_t cnt;
 651
 652         req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
 653         if (req == NULL) {
 654                 ql_log(ql_log_fatal, base_vha, 0x00d9,
 655                     "Failed to allocate memory for request queue.\n");
 656                 goto failed;
 657         }
 658
 659         req->length = REQUEST_ENTRY_CNT_24XX;
 660         req->ring = dma_alloc_coherent(&ha->pdev->dev,
 661                         (req->length + 1) * sizeof(request_t),
 662                         &req->dma, GFP_KERNEL);
 663         if (req->ring == NULL) {
 664                 ql_log(ql_log_fatal, base_vha, 0x00da,
 665                     "Failed to allocate memory for request_ring.\n");
 666                 goto que_failed;
 667         }
 668
 669         ret = qla2x00_alloc_outstanding_cmds(ha, req);
 670         if (ret != QLA_SUCCESS)
 671                 goto que_failed;
 672
 673         mutex_lock(&ha->mq_lock);
 674         que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues);
 675         if (que_id >= ha->max_req_queues) {
 676                 mutex_unlock(&ha->mq_lock);
 677                 ql_log(ql_log_warn, base_vha, 0x00db,
 678                     "No resources to create additional request queue.\n");
 679                 goto que_failed;
 680         }
 681         set_bit(que_id, ha->req_qid_map);
 682         ha->req_q_map[que_id] = req;
 683         req->rid = rid;
 684         req->vp_idx = vp_idx;
 685         req->qos = qos;
 686
 687         ql_dbg(ql_dbg_multiq, base_vha, 0xc002,
 688             "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
 689             que_id, req->rid, req->vp_idx, req->qos);
 690         ql_dbg(ql_dbg_init, base_vha, 0x00dc,
 691             "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
 692             que_id, req->rid, req->vp_idx, req->qos);
 693         if (rsp_que < 0)
 694                 req->rsp = NULL;
 695         else
 696                 req->rsp = ha->rsp_q_map[rsp_que];
 697         /* Use alternate PCI bus number */
 698         if (MSB(req->rid))
 699                 options |= BIT_4;
 700         /* Use alternate PCI devfn */
 701         if (LSB(req->rid))
 702                 options |= BIT_5;
 703         req->options = options;
 704
 705         ql_dbg(ql_dbg_multiq, base_vha, 0xc003,
 706             "options=0x%x.\n", req->options);
 707         ql_dbg(ql_dbg_init, base_vha, 0x00dd,
 708             "options=0x%x.\n", req->options);
 709         for (cnt = 1; cnt < req->num_outstanding_cmds; cnt++)
 710                 req->outstanding_cmds[cnt] = NULL;
 711         req->current_outstanding_cmd = 1;
 712
 713         req->ring_ptr = req->ring;
 714         req->ring_index = 0;
 715         req->cnt = req->length;
 716         req->id = que_id;
 717         reg = ISP_QUE_REG(ha, que_id);
 718         req->req_q_in = &reg->isp25mq.req_q_in;
 719         req->req_q_out = &reg->isp25mq.req_q_out;
 720         req->max_q_depth = ha->req_q_map[0]->max_q_depth;
 721         req->out_ptr = (void *)(req->ring + req->length);
 722         mutex_unlock(&ha->mq_lock);
 723         ql_dbg(ql_dbg_multiq, base_vha, 0xc004,
 724             "ring_ptr=%p ring_index=%d, "
 725             "cnt=%d id=%d max_q_depth=%d.\n",
 726             req->ring_ptr, req->ring_index,
 727             req->cnt, req->id, req->max_q_depth);
 728         ql_dbg(ql_dbg_init, base_vha, 0x00de,
 729             "ring_ptr=%p ring_index=%d, "
 730             "cnt=%d id=%d max_q_depth=%d.\n",
 731             req->ring_ptr, req->ring_index, req->cnt,
 732             req->id, req->max_q_depth);
 733
 734         ret = qla25xx_init_req_que(base_vha, req);
 735         if (ret != QLA_SUCCESS) {
 736                 ql_log(ql_log_fatal, base_vha, 0x00df,
 737                     "%s failed.\n", __func__);
 738                 mutex_lock(&ha->mq_lock);
 739                 clear_bit(que_id, ha->req_qid_map);
 740                 mutex_unlock(&ha->mq_lock);
 741                 goto que_failed;
 742         }
 743
 744         return req->id;
 745
 746 que_failed:
 747         qla25xx_free_req_que(base_vha, req);
 748 failed:
 749         return 0;
 750 }
 751
 752 static void qla_do_work(struct work_struct *work)
 753 {
 754         unsigned long flags;
 755         struct qla_qpair *qpair = container_of(work, struct qla_qpair, q_work);
 756         struct scsi_qla_host *vha;
 757         struct qla_hw_data *ha = qpair->hw;
 758
 759         spin_lock_irqsave(&qpair->qp_lock, flags);
 760         vha = pci_get_drvdata(ha->pdev);
 761         qla24xx_process_response_queue(vha, qpair->rsp);
 762         spin_unlock_irqrestore(&qpair->qp_lock, flags);
 763 }
 764
 765 /* create response queue */
 766 int
 767 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
 768         uint8_t vp_idx, uint16_t rid, struct qla_qpair *qpair)
 769 {
 770         int ret = 0;
 771         struct rsp_que *rsp = NULL;
 772         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 773         uint16_t que_id = 0;
 774         device_reg_t *reg;
 775
 776         rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
 777         if (rsp == NULL) {
 778                 ql_log(ql_log_warn, base_vha, 0x0066,
 779                     "Failed to allocate memory for response queue.\n");
 780                 goto failed;
 781         }
 782
 783         rsp->length = RESPONSE_ENTRY_CNT_MQ;
 784         rsp->ring = dma_alloc_coherent(&ha->pdev->dev,
 785                         (rsp->length + 1) * sizeof(response_t),
 786                         &rsp->dma, GFP_KERNEL);
 787         if (rsp->ring == NULL) {
 788                 ql_log(ql_log_warn, base_vha, 0x00e1,
 789                     "Failed to allocate memory for response ring.\n");
 790                 goto que_failed;
 791         }
 792
 793         mutex_lock(&ha->mq_lock);
 794         que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues);
 795         if (que_id >= ha->max_rsp_queues) {
 796                 mutex_unlock(&ha->mq_lock);
 797                 ql_log(ql_log_warn, base_vha, 0x00e2,
 798                     "No resources to create additional request queue.\n");
 799                 goto que_failed;
 800         }
 801         set_bit(que_id, ha->rsp_qid_map);
 802
 803         rsp->msix = qpair->msix;
 804
 805         ha->rsp_q_map[que_id] = rsp;
 806         rsp->rid = rid;
 807         rsp->vp_idx = vp_idx;
 808         rsp->hw = ha;
 809         ql_dbg(ql_dbg_init, base_vha, 0x00e4,
 810             "rsp queue_id=%d rid=%d vp_idx=%d hw=%p.\n",
 811             que_id, rsp->rid, rsp->vp_idx, rsp->hw);
 812         /* Use alternate PCI bus number */
 813         if (MSB(rsp->rid))
 814                 options |= BIT_4;
 815         /* Use alternate PCI devfn */
 816         if (LSB(rsp->rid))
 817                 options |= BIT_5;
 818         /* Enable MSIX handshake mode on for uncapable adapters */
 819         if (!IS_MSIX_NACK_CAPABLE(ha))
 820                 options |= BIT_6;
 821
 822         /* Set option to indicate response queue creation */
 823         options |= BIT_1;
 824
 825         rsp->options = options;
 826         rsp->id = que_id;
 827         reg = ISP_QUE_REG(ha, que_id);
 828         rsp->rsp_q_in = &reg->isp25mq.rsp_q_in;
 829         rsp->rsp_q_out = &reg->isp25mq.rsp_q_out;
 830         rsp->in_ptr = (void *)(rsp->ring + rsp->length);
 831         mutex_unlock(&ha->mq_lock);
 832         ql_dbg(ql_dbg_multiq, base_vha, 0xc00b,
 833             "options=%x id=%d rsp_q_in=%p rsp_q_out=%p\n",
 834             rsp->options, rsp->id, rsp->rsp_q_in,
 835             rsp->rsp_q_out);
 836         ql_dbg(ql_dbg_init, base_vha, 0x00e5,
 837             "options=%x id=%d rsp_q_in=%p rsp_q_out=%p\n",
 838             rsp->options, rsp->id, rsp->rsp_q_in,
 839             rsp->rsp_q_out);
 840
 841         ret = qla25xx_request_irq(ha, qpair, qpair->msix,
 842             QLA_MSIX_QPAIR_MULTIQ_RSP_Q);
 843         if (ret)
 844                 goto que_failed;
 845
 846         ret = qla25xx_init_rsp_que(base_vha, rsp);
 847         if (ret != QLA_SUCCESS) {
 848                 ql_log(ql_log_fatal, base_vha, 0x00e7,
 849                     "%s failed.\n", __func__);
 850                 mutex_lock(&ha->mq_lock);
 851                 clear_bit(que_id, ha->rsp_qid_map);
 852                 mutex_unlock(&ha->mq_lock);
 853                 goto que_failed;
 854         }
 855         rsp->req = NULL;
 856
 857         qla2x00_init_response_q_entries(rsp);
 858         if (qpair->hw->wq)
 859                 INIT_WORK(&qpair->q_work, qla_do_work);
 860         return rsp->id;
 861
 862 que_failed:
 863         qla25xx_free_rsp_que(base_vha, rsp);
 864 failed:
 865         return 0;
 866 }