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         spin_unlock_irqrestore(&ha->vport_slock, flags);
  54
  55         spin_lock_irqsave(&ha->hardware_lock, flags);
  56         qlt_update_vp_map(vha, SET_VP_IDX);
  57         spin_unlock_irqrestore(&ha->hardware_lock, flags);
  58
  59         mutex_unlock(&ha->vport_lock);
  60         return vp_id;
  61 }
  62
  63 void
  64 qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
  65 {
  66         uint16_t vp_id;
  67         struct qla_hw_data *ha = vha->hw;
  68         unsigned long flags = 0;
  69         u8 i;
  70
  71         mutex_lock(&ha->vport_lock);
  72         /*
  73          * Wait for all pending activities to finish before removing vport from
  74          * the list.
  75          * Lock needs to be held for safe removal from the list (it
  76          * ensures no active vp_list traversal while the vport is removed
  77          * from the queue)
  78          */
  79         for (i = 0; i < 10; i++) {
  80                 if (wait_event_timeout(vha->vref_waitq,
  81                     !atomic_read(&vha->vref_count), HZ) > 0)
  82                         break;
  83         }
  84
  85         spin_lock_irqsave(&ha->vport_slock, flags);
  86         if (atomic_read(&vha->vref_count)) {
  87                 ql_dbg(ql_dbg_vport, vha, 0xfffa,
  88                     "vha->vref_count=%u timeout\n", vha->vref_count.counter);
  89                 vha->vref_count = (atomic_t)ATOMIC_INIT(0);
  90         }
  91         list_del(&vha->list);
  92         qlt_update_vp_map(vha, RESET_VP_IDX);
  93         spin_unlock_irqrestore(&ha->vport_slock, flags);
  94
  95         vp_id = vha->vp_idx;
  96         ha->num_vhosts--;
  97         clear_bit(vp_id, ha->vp_idx_map);
  98
  99         mutex_unlock(&ha->vport_lock);
 100 }
 101
 102 static scsi_qla_host_t *
 103 qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name)
 104 {
 105         scsi_qla_host_t *vha;
 106         struct scsi_qla_host *tvha;
 107         unsigned long flags;
 108
 109         spin_lock_irqsave(&ha->vport_slock, flags);
 110         /* Locate matching device in database. */
 111         list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
 112                 if (!memcmp(port_name, vha->port_name, WWN_SIZE)) {
 113                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 114                         return vha;
 115                 }
 116         }
 117         spin_unlock_irqrestore(&ha->vport_slock, flags);
 118         return NULL;
 119 }
 120
 121 /*
 122  * qla2x00_mark_vp_devices_dead
 123  *      Updates fcport state when device goes offline.
 124  *
 125  * Input:
 126  *      ha = adapter block pointer.
 127  *      fcport = port structure pointer.
 128  *
 129  * Return:
 130  *      None.
 131  *
 132  * Context:
 133  */
 134 static void
 135 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
 136 {
 137         /*
 138          * !!! NOTE !!!
 139          * This function, if called in contexts other than vp create, disable
 140          * or delete, please make sure this is synchronized with the
 141          * delete thread.
 142          */
 143         fc_port_t *fcport;
 144
 145         list_for_each_entry(fcport, &vha->vp_fcports, list) {
 146                 ql_dbg(ql_dbg_vport, vha, 0xa001,
 147                     "Marking port dead, loop_id=0x%04x : %x.\n",
 148                     fcport->loop_id, fcport->vha->vp_idx);
 149
 150                 qla2x00_mark_device_lost(vha, fcport, 0);
 151                 qla2x00_set_fcport_state(fcport, FCS_UNCONFIGURED);
 152         }
 153 }
 154
 155 int
 156 qla24xx_disable_vp(scsi_qla_host_t *vha)
 157 {
 158         unsigned long flags;
 159         int ret = QLA_SUCCESS;
 160         fc_port_t *fcport;
 161
 162         if (vha->hw->flags.fw_started)
 163                 ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 164
 165         atomic_set(&vha->loop_state, LOOP_DOWN);
 166         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 167         list_for_each_entry(fcport, &vha->vp_fcports, list)
 168                 fcport->logout_on_delete = 0;
 169
 170         qla2x00_mark_all_devices_lost(vha);
 171
 172         /* Remove port id from vp target map */
 173         spin_lock_irqsave(&vha->hw->hardware_lock, flags);
 174         qlt_update_vp_map(vha, RESET_AL_PA);
 175         spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
 176
 177         qla2x00_mark_vp_devices_dead(vha);
 178         atomic_set(&vha->vp_state, VP_FAILED);
 179         vha->flags.management_server_logged_in = 0;
 180         if (ret == QLA_SUCCESS) {
 181                 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED);
 182         } else {
 183                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 184                 return -1;
 185         }
 186         return 0;
 187 }
 188
 189 int
 190 qla24xx_enable_vp(scsi_qla_host_t *vha)
 191 {
 192         int ret;
 193         struct qla_hw_data *ha = vha->hw;
 194         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 195
 196         /* Check if physical ha port is Up */
 197         if (atomic_read(&base_vha->loop_state) == LOOP_DOWN  ||
 198                 atomic_read(&base_vha->loop_state) == LOOP_DEAD ||
 199                 !(ha->current_topology & ISP_CFG_F)) {
 200                 vha->vp_err_state =  VP_ERR_PORTDWN;
 201                 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN);
 202                 ql_dbg(ql_dbg_taskm, vha, 0x800b,
 203                     "%s skip enable. loop_state %x topo %x\n",
 204                     __func__, base_vha->loop_state.counter,
 205                     ha->current_topology);
 206
 207                 goto enable_failed;
 208         }
 209
 210         /* Initialize the new vport unless it is a persistent port */
 211         mutex_lock(&ha->vport_lock);
 212         ret = qla24xx_modify_vp_config(vha);
 213         mutex_unlock(&ha->vport_lock);
 214
 215         if (ret != QLA_SUCCESS) {
 216                 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 217                 goto enable_failed;
 218         }
 219
 220         ql_dbg(ql_dbg_taskm, vha, 0x801a,
 221             "Virtual port with id: %d - Enabled.\n", vha->vp_idx);
 222         return 0;
 223
 224 enable_failed:
 225         ql_dbg(ql_dbg_taskm, vha, 0x801b,
 226             "Virtual port with id: %d - Disabled.\n", vha->vp_idx);
 227         return 1;
 228 }
 229
 230 static void
 231 qla24xx_configure_vp(scsi_qla_host_t *vha)
 232 {
 233         struct fc_vport *fc_vport;
 234         int ret;
 235
 236         fc_vport = vha->fc_vport;
 237
 238         ql_dbg(ql_dbg_vport, vha, 0xa002,
 239             "%s: change request #3.\n", __func__);
 240         ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx);
 241         if (ret != QLA_SUCCESS) {
 242                 ql_dbg(ql_dbg_vport, vha, 0xa003, "Failed to enable "
 243                     "receiving of RSCN requests: 0x%x.\n", ret);
 244                 return;
 245         } else {
 246                 /* Corresponds to SCR enabled */
 247                 clear_bit(VP_SCR_NEEDED, &vha->vp_flags);
 248         }
 249
 250         vha->flags.online = 1;
 251         if (qla24xx_configure_vhba(vha))
 252                 return;
 253
 254         atomic_set(&vha->vp_state, VP_ACTIVE);
 255         fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE);
 256 }
 257
 258 void
 259 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
 260 {
 261         scsi_qla_host_t *vha;
 262         struct qla_hw_data *ha = rsp->hw;
 263         int i = 0;
 264         unsigned long flags;
 265
 266         spin_lock_irqsave(&ha->vport_slock, flags);
 267         list_for_each_entry(vha, &ha->vp_list, list) {
 268                 if (vha->vp_idx) {
 269                         if (test_bit(VPORT_DELETE, &vha->dpc_flags))
 270                                 continue;
 271
 272                         atomic_inc(&vha->vref_count);
 273                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 274
 275                         switch (mb[0]) {
 276                         case MBA_LIP_OCCURRED:
 277                         case MBA_LOOP_UP:
 278                         case MBA_LOOP_DOWN:
 279                         case MBA_LIP_RESET:
 280                         case MBA_POINT_TO_POINT:
 281                         case MBA_CHG_IN_CONNECTION:
 282                                 ql_dbg(ql_dbg_async, vha, 0x5024,
 283                                     "Async_event for VP[%d], mb=0x%x vha=%p.\n",
 284                                     i, *mb, vha);
 285                                 qla2x00_async_event(vha, rsp, mb);
 286                                 break;
 287                         case MBA_PORT_UPDATE:
 288                         case MBA_RSCN_UPDATE:
 289                                 if ((mb[3] & 0xff) == vha->vp_idx) {
 290                                         ql_dbg(ql_dbg_async, vha, 0x5024,
 291                                             "Async_event for VP[%d], mb=0x%x vha=%p\n",
 292                                             i, *mb, vha);
 293                                         qla2x00_async_event(vha, rsp, mb);
 294                                 }
 295                                 break;
 296                         }
 297
 298                         spin_lock_irqsave(&ha->vport_slock, flags);
 299                         atomic_dec(&vha->vref_count);
 300                         wake_up(&vha->vref_waitq);
 301                 }
 302                 i++;
 303         }
 304         spin_unlock_irqrestore(&ha->vport_slock, flags);
 305 }
 306
 307 int
 308 qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
 309 {
 310         fc_port_t *fcport;
 311
 312         /*
 313          * To exclusively reset vport, we need to log it out first.
 314          * Note: This control_vp can fail if ISP reset is already
 315          * issued, this is expected, as the vp would be already
 316          * logged out due to ISP reset.
 317          */
 318         if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)) {
 319                 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
 320                 list_for_each_entry(fcport, &vha->vp_fcports, list)
 321                         fcport->logout_on_delete = 0;
 322         }
 323
 324         /*
 325          * Physical port will do most of the abort and recovery work. We can
 326          * just treat it as a loop down
 327          */
 328         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 329                 atomic_set(&vha->loop_state, LOOP_DOWN);
 330                 qla2x00_mark_all_devices_lost(vha);
 331         } else {
 332                 if (!atomic_read(&vha->loop_down_timer))
 333                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 334         }
 335
 336         ql_dbg(ql_dbg_taskm, vha, 0x801d,
 337             "Scheduling enable of Vport %d.\n", vha->vp_idx);
 338
 339         return qla24xx_enable_vp(vha);
 340 }
 341
 342 static int
 343 qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
 344 {
 345         struct qla_hw_data *ha = vha->hw;
 346         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
 347
 348         ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x4012,
 349             "Entering %s vp_flags: 0x%lx.\n", __func__, vha->vp_flags);
 350
 351         /* Check if Fw is ready to configure VP first */
 352         if (test_bit(VP_CONFIG_OK, &base_vha->vp_flags)) {
 353                 if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
 354                         /* VP acquired. complete port configuration */
 355                         ql_dbg(ql_dbg_dpc, vha, 0x4014,
 356                             "Configure VP scheduled.\n");
 357                         qla24xx_configure_vp(vha);
 358                         ql_dbg(ql_dbg_dpc, vha, 0x4015,
 359                             "Configure VP end.\n");
 360                         return 0;
 361                 }
 362         }
 363
 364         if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) {
 365                 ql_dbg(ql_dbg_dpc, vha, 0x4016,
 366                     "FCPort update scheduled.\n");
 367                 qla2x00_update_fcports(vha);
 368                 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags);
 369                 ql_dbg(ql_dbg_dpc, vha, 0x4017,
 370                     "FCPort update end.\n");
 371         }
 372
 373         if (test_bit(RELOGIN_NEEDED, &vha->dpc_flags) &&
 374             !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) &&
 375             atomic_read(&vha->loop_state) != LOOP_DOWN) {
 376
 377                 if (!vha->relogin_jif ||
 378                     time_after_eq(jiffies, vha->relogin_jif)) {
 379                         vha->relogin_jif = jiffies + HZ;
 380                         clear_bit(RELOGIN_NEEDED, &vha->dpc_flags);
 381
 382                         ql_dbg(ql_dbg_dpc, vha, 0x4018,
 383                             "Relogin needed scheduled.\n");
 384                         qla24xx_post_relogin_work(vha);
 385                 }
 386         }
 387
 388         if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) &&
 389             (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) {
 390                 clear_bit(RESET_ACTIVE, &vha->dpc_flags);
 391         }
 392
 393         if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
 394                 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) {
 395                         ql_dbg(ql_dbg_dpc, vha, 0x401a,
 396                             "Loop resync scheduled.\n");
 397                         qla2x00_loop_resync(vha);
 398                         clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags);
 399                         ql_dbg(ql_dbg_dpc, vha, 0x401b,
 400                             "Loop resync end.\n");
 401                 }
 402         }
 403
 404         ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x401c,
 405             "Exiting %s.\n", __func__);
 406         return 0;
 407 }
 408
 409 void
 410 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
 411 {
 412         struct qla_hw_data *ha = vha->hw;
 413         scsi_qla_host_t *vp;
 414         unsigned long flags = 0;
 415
 416         if (vha->vp_idx)
 417                 return;
 418         if (list_empty(&ha->vp_list))
 419                 return;
 420
 421         clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);
 422
 423         if (!(ha->current_topology & ISP_CFG_F))
 424                 return;
 425
 426         spin_lock_irqsave(&ha->vport_slock, flags);
 427         list_for_each_entry(vp, &ha->vp_list, list) {
 428                 if (vp->vp_idx) {
 429                         atomic_inc(&vp->vref_count);
 430                         spin_unlock_irqrestore(&ha->vport_slock, flags);
 431
 432                         qla2x00_do_dpc_vp(vp);
 433
 434                         spin_lock_irqsave(&ha->vport_slock, flags);
 435                         atomic_dec(&vp->vref_count);
 436                 }
 437         }
 438         spin_unlock_irqrestore(&ha->vport_slock, flags);
 439 }
 440
 441 int
 442 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
 443 {
 444         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 445         struct qla_hw_data *ha = base_vha->hw;
 446         scsi_qla_host_t *vha;
 447         uint8_t port_name[WWN_SIZE];
 448
 449         if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR)
 450                 return VPCERR_UNSUPPORTED;
 451
 452         /* Check up the F/W and H/W support NPIV */
 453         if (!ha->flags.npiv_supported)
 454                 return VPCERR_UNSUPPORTED;
 455
 456         /* Check up whether npiv supported switch presented */
 457         if (!(ha->switch_cap & FLOGI_MID_SUPPORT))
 458                 return VPCERR_NO_FABRIC_SUPP;
 459
 460         /* Check up unique WWPN */
 461         u64_to_wwn(fc_vport->port_name, port_name);
 462         if (!memcmp(port_name, base_vha->port_name, WWN_SIZE))
 463                 return VPCERR_BAD_WWN;
 464         vha = qla24xx_find_vhost_by_name(ha, port_name);
 465         if (vha)
 466                 return VPCERR_BAD_WWN;
 467
 468         /* Check up max-npiv-supports */
 469         if (ha->num_vhosts > ha->max_npiv_vports) {
 470                 ql_dbg(ql_dbg_vport, vha, 0xa004,
 471                     "num_vhosts %ud is bigger "
 472                     "than max_npiv_vports %ud.\n",
 473                     ha->num_vhosts, ha->max_npiv_vports);
 474                 return VPCERR_UNSUPPORTED;
 475         }
 476         return 0;
 477 }
 478
 479 scsi_qla_host_t *
 480 qla24xx_create_vhost(struct fc_vport *fc_vport)
 481 {
 482         scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost);
 483         struct qla_hw_data *ha = base_vha->hw;
 484         scsi_qla_host_t *vha;
 485         struct scsi_host_template *sht = &qla2xxx_driver_template;
 486         struct Scsi_Host *host;
 487
 488         vha = qla2x00_create_host(sht, ha);
 489         if (!vha) {
 490                 ql_log(ql_log_warn, vha, 0xa005,
 491                     "scsi_host_alloc() failed for vport.\n");
 492                 return(NULL);
 493         }
 494
 495         host = vha->host;
 496         fc_vport->dd_data = vha;
 497         /* New host info */
 498         u64_to_wwn(fc_vport->node_name, vha->node_name);
 499         u64_to_wwn(fc_vport->port_name, vha->port_name);
 500
 501         vha->fc_vport = fc_vport;
 502         vha->device_flags = 0;
 503         vha->vp_idx = qla24xx_allocate_vp_id(vha);
 504         if (vha->vp_idx > ha->max_npiv_vports) {
 505                 ql_dbg(ql_dbg_vport, vha, 0xa006,
 506                     "Couldn't allocate vp_id.\n");
 507                 goto create_vhost_failed;
 508         }
 509         vha->mgmt_svr_loop_id = qla2x00_reserve_mgmt_server_loop_id(vha);
 510
 511         vha->dpc_flags = 0L;
 512
 513         /*
 514          * To fix the issue of processing a parent's RSCN for the vport before
 515          * its SCR is complete.
 516          */
 517         set_bit(VP_SCR_NEEDED, &vha->vp_flags);
 518         atomic_set(&vha->loop_state, LOOP_DOWN);
 519         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 520
 521         qla2x00_start_timer(vha, WATCH_INTERVAL);
 522
 523         vha->req = base_vha->req;
 524         vha->flags.nvme_enabled = base_vha->flags.nvme_enabled;
 525         host->can_queue = base_vha->req->length + 128;
 526         host->cmd_per_lun = 3;
 527         if (IS_T10_PI_CAPABLE(ha) && ql2xenabledif)
 528                 host->max_cmd_len = 32;
 529         else
 530                 host->max_cmd_len = MAX_CMDSZ;
 531         host->max_channel = MAX_BUSES - 1;
 532         host->max_lun = ql2xmaxlun;
 533         host->unique_id = host->host_no;
 534         host->max_id = ha->max_fibre_devices;
 535         host->transportt = qla2xxx_transport_vport_template;
 536
 537         ql_dbg(ql_dbg_vport, vha, 0xa007,
 538             "Detect vport hba %ld at address = %p.\n",
 539             vha->host_no, vha);
 540
 541         vha->flags.init_done = 1;
 542
 543         mutex_lock(&ha->vport_lock);
 544         set_bit(vha->vp_idx, ha->vp_idx_map);
 545         ha->cur_vport_count++;
 546         mutex_unlock(&ha->vport_lock);
 547
 548         return vha;
 549
 550 create_vhost_failed:
 551         return NULL;
 552 }
 553
 554 static void
 555 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req)
 556 {
 557         struct qla_hw_data *ha = vha->hw;
 558         uint16_t que_id = req->id;
 559
 560         dma_free_coherent(&ha->pdev->dev, (req->length + 1) *
 561                 sizeof(request_t), req->ring, req->dma);
 562         req->ring = NULL;
 563         req->dma = 0;
 564         if (que_id) {
 565                 ha->req_q_map[que_id] = NULL;
 566                 mutex_lock(&ha->vport_lock);
 567                 clear_bit(que_id, ha->req_qid_map);
 568                 mutex_unlock(&ha->vport_lock);
 569         }
 570         kfree(req->outstanding_cmds);
 571         kfree(req);
 572         req = NULL;
 573 }
 574
 575 static void
 576 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 577 {
 578         struct qla_hw_data *ha = vha->hw;
 579         uint16_t que_id = rsp->id;
 580
 581         if (rsp->msix && rsp->msix->have_irq) {
 582                 free_irq(rsp->msix->vector, rsp->msix->handle);
 583                 rsp->msix->have_irq = 0;
 584                 rsp->msix->in_use = 0;
 585                 rsp->msix->handle = NULL;
 586         }
 587         dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) *
 588                 sizeof(response_t), rsp->ring, rsp->dma);
 589         rsp->ring = NULL;
 590         rsp->dma = 0;
 591         if (que_id) {
 592                 ha->rsp_q_map[que_id] = NULL;
 593                 mutex_lock(&ha->vport_lock);
 594                 clear_bit(que_id, ha->rsp_qid_map);
 595                 mutex_unlock(&ha->vport_lock);
 596         }
 597         kfree(rsp);
 598         rsp = NULL;
 599 }
 600
 601 int
 602 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
 603 {
 604         int ret = QLA_SUCCESS;
 605
 606         if (req && vha->flags.qpairs_req_created) {
 607                 req->options |= BIT_0;
 608                 ret = qla25xx_init_req_que(vha, req);
 609                 if (ret != QLA_SUCCESS)
 610                         return QLA_FUNCTION_FAILED;
 611
 612                 qla25xx_free_req_que(vha, req);
 613         }
 614
 615         return ret;
 616 }
 617
 618 int
 619 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
 620 {
 621         int ret = QLA_SUCCESS;
 622
 623         if (rsp && vha->flags.qpairs_rsp_created) {
 624                 rsp->options |= BIT_0;
 625                 ret = qla25xx_init_rsp_que(vha, rsp);
 626                 if (ret != QLA_SUCCESS)
 627                         return QLA_FUNCTION_FAILED;
 628
 629                 qla25xx_free_rsp_que(vha, rsp);
 630         }
 631
 632         return ret;
 633 }
 634
 635 /* Delete all queues for a given vhost */
 636 int
 637 qla25xx_delete_queues(struct scsi_qla_host *vha)
 638 {
 639         int cnt, ret = 0;
 640         struct req_que *req = NULL;
 641         struct rsp_que *rsp = NULL;
 642         struct qla_hw_data *ha = vha->hw;
 643         struct qla_qpair *qpair, *tqpair;
 644
 645         if (ql2xmqsupport || ql2xnvmeenable) {
 646                 list_for_each_entry_safe(qpair, tqpair, &vha->qp_list,
 647                     qp_list_elem)
 648                         qla2xxx_delete_qpair(vha, qpair);
 649         } else {
 650                 /* Delete request queues */
 651                 for (cnt = 1; cnt < ha->max_req_queues; cnt++) {
 652                         req = ha->req_q_map[cnt];
 653                         if (req && test_bit(cnt, ha->req_qid_map)) {
 654                                 ret = qla25xx_delete_req_que(vha, req);
 655                                 if (ret != QLA_SUCCESS) {
 656                                         ql_log(ql_log_warn, vha, 0x00ea,
 657                                             "Couldn't delete req que %d.\n",
 658                                             req->id);
 659                                         return ret;
 660                                 }
 661                         }
 662                 }
 663
 664                 /* Delete response queues */
 665                 for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) {
 666                         rsp = ha->rsp_q_map[cnt];
 667                         if (rsp && test_bit(cnt, ha->rsp_qid_map)) {
 668                                 ret = qla25xx_delete_rsp_que(vha, rsp);
 669                                 if (ret != QLA_SUCCESS) {
 670                                         ql_log(ql_log_warn, vha, 0x00eb,
 671                                             "Couldn't delete rsp que %d.\n",
 672                                             rsp->id);
 673                                         return ret;
 674                                 }
 675                         }
 676                 }
 677         }
 678
 679         return ret;
 680 }
 681
 682 int
 683 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
 684     uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos, bool startqp)
 685 {
 686         int ret = 0;
 687         struct req_que *req = NULL;
 688         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 689         struct scsi_qla_host *vha = pci_get_drvdata(ha->pdev);
 690         uint16_t que_id = 0;
 691         device_reg_t *reg;
 692         uint32_t cnt;
 693
 694         req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
 695         if (req == NULL) {
 696                 ql_log(ql_log_fatal, base_vha, 0x00d9,
 697                     "Failed to allocate memory for request queue.\n");
 698                 goto failed;
 699         }
 700
 701         req->length = REQUEST_ENTRY_CNT_24XX;
 702         req->ring = dma_alloc_coherent(&ha->pdev->dev,
 703                         (req->length + 1) * sizeof(request_t),
 704                         &req->dma, GFP_KERNEL);
 705         if (req->ring == NULL) {
 706                 ql_log(ql_log_fatal, base_vha, 0x00da,
 707                     "Failed to allocate memory for request_ring.\n");
 708                 goto que_failed;
 709         }
 710
 711         ret = qla2x00_alloc_outstanding_cmds(ha, req);
 712         if (ret != QLA_SUCCESS)
 713                 goto que_failed;
 714
 715         mutex_lock(&ha->mq_lock);
 716         que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues);
 717         if (que_id >= ha->max_req_queues) {
 718                 mutex_unlock(&ha->mq_lock);
 719                 ql_log(ql_log_warn, base_vha, 0x00db,
 720                     "No resources to create additional request queue.\n");
 721                 goto que_failed;
 722         }
 723         set_bit(que_id, ha->req_qid_map);
 724         ha->req_q_map[que_id] = req;
 725         req->rid = rid;
 726         req->vp_idx = vp_idx;
 727         req->qos = qos;
 728
 729         ql_dbg(ql_dbg_multiq, base_vha, 0xc002,
 730             "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
 731             que_id, req->rid, req->vp_idx, req->qos);
 732         ql_dbg(ql_dbg_init, base_vha, 0x00dc,
 733             "queue_id=%d rid=%d vp_idx=%d qos=%d.\n",
 734             que_id, req->rid, req->vp_idx, req->qos);
 735         if (rsp_que < 0)
 736                 req->rsp = NULL;
 737         else
 738                 req->rsp = ha->rsp_q_map[rsp_que];
 739         /* Use alternate PCI bus number */
 740         if (MSB(req->rid))
 741                 options |= BIT_4;
 742         /* Use alternate PCI devfn */
 743         if (LSB(req->rid))
 744                 options |= BIT_5;
 745         req->options = options;
 746
 747         ql_dbg(ql_dbg_multiq, base_vha, 0xc003,
 748             "options=0x%x.\n", req->options);
 749         ql_dbg(ql_dbg_init, base_vha, 0x00dd,
 750             "options=0x%x.\n", req->options);
 751         for (cnt = 1; cnt < req->num_outstanding_cmds; cnt++)
 752                 req->outstanding_cmds[cnt] = NULL;
 753         req->current_outstanding_cmd = 1;
 754
 755         req->ring_ptr = req->ring;
 756         req->ring_index = 0;
 757         req->cnt = req->length;
 758         req->id = que_id;
 759         reg = ISP_QUE_REG(ha, que_id);
 760         req->req_q_in = &reg->isp25mq.req_q_in;
 761         req->req_q_out = &reg->isp25mq.req_q_out;
 762         req->max_q_depth = ha->req_q_map[0]->max_q_depth;
 763         req->out_ptr = (void *)(req->ring + req->length);
 764         mutex_unlock(&ha->mq_lock);
 765         ql_dbg(ql_dbg_multiq, base_vha, 0xc004,
 766             "ring_ptr=%p ring_index=%d, "
 767             "cnt=%d id=%d max_q_depth=%d.\n",
 768             req->ring_ptr, req->ring_index,
 769             req->cnt, req->id, req->max_q_depth);
 770         ql_dbg(ql_dbg_init, base_vha, 0x00de,
 771             "ring_ptr=%p ring_index=%d, "
 772             "cnt=%d id=%d max_q_depth=%d.\n",
 773             req->ring_ptr, req->ring_index, req->cnt,
 774             req->id, req->max_q_depth);
 775
 776         if (startqp) {
 777                 ret = qla25xx_init_req_que(base_vha, req);
 778                 if (ret != QLA_SUCCESS) {
 779                         ql_log(ql_log_fatal, base_vha, 0x00df,
 780                             "%s failed.\n", __func__);
 781                         mutex_lock(&ha->mq_lock);
 782                         clear_bit(que_id, ha->req_qid_map);
 783                         mutex_unlock(&ha->mq_lock);
 784                         goto que_failed;
 785                 }
 786                 vha->flags.qpairs_req_created = 1;
 787         }
 788
 789         return req->id;
 790
 791 que_failed:
 792         qla25xx_free_req_que(base_vha, req);
 793 failed:
 794         return 0;
 795 }
 796
 797 static void qla_do_work(struct work_struct *work)
 798 {
 799         unsigned long flags;
 800         struct qla_qpair *qpair = container_of(work, struct qla_qpair, q_work);
 801         struct scsi_qla_host *vha;
 802         struct qla_hw_data *ha = qpair->hw;
 803
 804         spin_lock_irqsave(&qpair->qp_lock, flags);
 805         vha = pci_get_drvdata(ha->pdev);
 806         qla24xx_process_response_queue(vha, qpair->rsp);
 807         spin_unlock_irqrestore(&qpair->qp_lock, flags);
 808
 809 }
 810
 811 /* create response queue */
 812 int
 813 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
 814     uint8_t vp_idx, uint16_t rid, struct qla_qpair *qpair, bool startqp)
 815 {
 816         int ret = 0;
 817         struct rsp_que *rsp = NULL;
 818         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 819         struct scsi_qla_host *vha = pci_get_drvdata(ha->pdev);
 820         uint16_t que_id = 0;
 821         device_reg_t *reg;
 822
 823         rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
 824         if (rsp == NULL) {
 825                 ql_log(ql_log_warn, base_vha, 0x0066,
 826                     "Failed to allocate memory for response queue.\n");
 827                 goto failed;
 828         }
 829
 830         rsp->length = RESPONSE_ENTRY_CNT_MQ;
 831         rsp->ring = dma_alloc_coherent(&ha->pdev->dev,
 832                         (rsp->length + 1) * sizeof(response_t),
 833                         &rsp->dma, GFP_KERNEL);
 834         if (rsp->ring == NULL) {
 835                 ql_log(ql_log_warn, base_vha, 0x00e1,
 836                     "Failed to allocate memory for response ring.\n");
 837                 goto que_failed;
 838         }
 839
 840         mutex_lock(&ha->mq_lock);
 841         que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues);
 842         if (que_id >= ha->max_rsp_queues) {
 843                 mutex_unlock(&ha->mq_lock);
 844                 ql_log(ql_log_warn, base_vha, 0x00e2,
 845                     "No resources to create additional request queue.\n");
 846                 goto que_failed;
 847         }
 848         set_bit(que_id, ha->rsp_qid_map);
 849
 850         rsp->msix = qpair->msix;
 851
 852         ha->rsp_q_map[que_id] = rsp;
 853         rsp->rid = rid;
 854         rsp->vp_idx = vp_idx;
 855         rsp->hw = ha;
 856         ql_dbg(ql_dbg_init, base_vha, 0x00e4,
 857             "rsp queue_id=%d rid=%d vp_idx=%d hw=%p.\n",
 858             que_id, rsp->rid, rsp->vp_idx, rsp->hw);
 859         /* Use alternate PCI bus number */
 860         if (MSB(rsp->rid))
 861                 options |= BIT_4;
 862         /* Use alternate PCI devfn */
 863         if (LSB(rsp->rid))
 864                 options |= BIT_5;
 865         /* Enable MSIX handshake mode on for uncapable adapters */
 866         if (!IS_MSIX_NACK_CAPABLE(ha))
 867                 options |= BIT_6;
 868
 869         /* Set option to indicate response queue creation */
 870         options |= BIT_1;
 871
 872         rsp->options = options;
 873         rsp->id = que_id;
 874         reg = ISP_QUE_REG(ha, que_id);
 875         rsp->rsp_q_in = &reg->isp25mq.rsp_q_in;
 876         rsp->rsp_q_out = &reg->isp25mq.rsp_q_out;
 877         rsp->in_ptr = (void *)(rsp->ring + rsp->length);
 878         mutex_unlock(&ha->mq_lock);
 879         ql_dbg(ql_dbg_multiq, base_vha, 0xc00b,
 880             "options=%x id=%d rsp_q_in=%p rsp_q_out=%p\n",
 881             rsp->options, rsp->id, rsp->rsp_q_in,
 882             rsp->rsp_q_out);
 883         ql_dbg(ql_dbg_init, base_vha, 0x00e5,
 884             "options=%x id=%d rsp_q_in=%p rsp_q_out=%p\n",
 885             rsp->options, rsp->id, rsp->rsp_q_in,
 886             rsp->rsp_q_out);
 887
 888         ret = qla25xx_request_irq(ha, qpair, qpair->msix,
 889             QLA_MSIX_QPAIR_MULTIQ_RSP_Q);
 890         if (ret)
 891                 goto que_failed;
 892
 893         if (startqp) {
 894                 ret = qla25xx_init_rsp_que(base_vha, rsp);
 895                 if (ret != QLA_SUCCESS) {
 896                         ql_log(ql_log_fatal, base_vha, 0x00e7,
 897                             "%s failed.\n", __func__);
 898                         mutex_lock(&ha->mq_lock);
 899                         clear_bit(que_id, ha->rsp_qid_map);
 900                         mutex_unlock(&ha->mq_lock);
 901                         goto que_failed;
 902                 }
 903                 vha->flags.qpairs_rsp_created = 1;
 904         }
 905         rsp->req = NULL;
 906
 907         qla2x00_init_response_q_entries(rsp);
 908         if (qpair->hw->wq)
 909                 INIT_WORK(&qpair->q_work, qla_do_work);
 910         return rsp->id;
 911
 912 que_failed:
 913         qla25xx_free_rsp_que(base_vha, rsp);
 914 failed:
 915         return 0;
 916 }
 917
 918 static void qla_ctrlvp_sp_done(srb_t *sp, int res)
 919 {
 920         if (sp->comp)
 921                 complete(sp->comp);
 922         /* don't free sp here. Let the caller do the free */
 923 }
 924
 925 /**
 926  * qla24xx_control_vp() - Enable a virtual port for given host
 927  * @vha:        adapter block pointer
 928  * @cmd:        command type to be sent for enable virtual port
 929  *
 930  * Return:      qla2xxx local function return status code.
 931  */
 932 int qla24xx_control_vp(scsi_qla_host_t *vha, int cmd)
 933 {
 934         int rval = QLA_MEMORY_ALLOC_FAILED;
 935         struct qla_hw_data *ha = vha->hw;
 936         int     vp_index = vha->vp_idx;
 937         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 938         DECLARE_COMPLETION_ONSTACK(comp);
 939         srb_t *sp;
 940
 941         ql_dbg(ql_dbg_vport, vha, 0x10c1,
 942             "Entered %s cmd %x index %d.\n", __func__, cmd, vp_index);
 943
 944         if (vp_index == 0 || vp_index >= ha->max_npiv_vports)
 945                 return QLA_PARAMETER_ERROR;
 946
 947         sp = qla2x00_get_sp(base_vha, NULL, GFP_KERNEL);
 948         if (!sp)
 949                 return rval;
 950
 951         sp->type = SRB_CTRL_VP;
 952         sp->name = "ctrl_vp";
 953         sp->comp = &comp;
 954         sp->done = qla_ctrlvp_sp_done;
 955         sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
 956         qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha) + 2);
 957         sp->u.iocb_cmd.u.ctrlvp.cmd = cmd;
 958         sp->u.iocb_cmd.u.ctrlvp.vp_index = vp_index;
 959
 960         rval = qla2x00_start_sp(sp);
 961         if (rval != QLA_SUCCESS) {
 962                 ql_dbg(ql_dbg_async, vha, 0xffff,
 963                     "%s: %s Failed submission. %x.\n",
 964                     __func__, sp->name, rval);
 965                 goto done;
 966         }
 967
 968         ql_dbg(ql_dbg_vport, vha, 0x113f, "%s hndl %x submitted\n",
 969             sp->name, sp->handle);
 970
 971         wait_for_completion(&comp);
 972         sp->comp = NULL;
 973
 974         rval = sp->rc;
 975         switch (rval) {
 976         case QLA_FUNCTION_TIMEOUT:
 977                 ql_dbg(ql_dbg_vport, vha, 0xffff, "%s: %s Timeout. %x.\n",
 978                     __func__, sp->name, rval);
 979                 break;
 980         case QLA_SUCCESS:
 981                 ql_dbg(ql_dbg_vport, vha, 0xffff, "%s: %s done.\n",
 982                     __func__, sp->name);
 983                 break;
 984         default:
 985                 ql_dbg(ql_dbg_vport, vha, 0xffff, "%s: %s Failed. %x.\n",
 986                     __func__, sp->name, rval);
 987                 break;
 988         }
 989 done:
 990         sp->free(sp);
 991         return rval;
 992 }