1 /* 2 * QLogic Fibre Channel HBA Driver 3 * Copyright (c) 2003-2011 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/slab.h> 13 #include <linux/list.h> 14 15 #include <scsi/scsi_tcq.h> 16 #include <scsi/scsicam.h> 17 #include <linux/delay.h> 18 19 void 20 qla2x00_vp_stop_timer(scsi_qla_host_t *vha) 21 { 22 if (vha->vp_idx && vha->timer_active) { 23 del_timer_sync(&vha->timer); 24 vha->timer_active = 0; 25 } 26 } 27 28 static uint32_t 29 qla24xx_allocate_vp_id(scsi_qla_host_t *vha) 30 { 31 uint32_t vp_id; 32 struct qla_hw_data *ha = vha->hw; 33 unsigned long flags; 34 35 /* Find an empty slot and assign an vp_id */ 36 mutex_lock(&ha->vport_lock); 37 vp_id = find_first_zero_bit(ha->vp_idx_map, ha->max_npiv_vports + 1); 38 if (vp_id > ha->max_npiv_vports) { 39 ql_dbg(ql_dbg_vport, vha, 0xa000, 40 "vp_id %d is bigger than max-supported %d.\n", 41 vp_id, ha->max_npiv_vports); 42 mutex_unlock(&ha->vport_lock); 43 return vp_id; 44 } 45 46 set_bit(vp_id, ha->vp_idx_map); 47 ha->num_vhosts++; 48 vha->vp_idx = vp_id; 49 50 spin_lock_irqsave(&ha->vport_slock, flags); 51 list_add_tail(&vha->list, &ha->vp_list); 52 spin_unlock_irqrestore(&ha->vport_slock, flags); 53 54 mutex_unlock(&ha->vport_lock); 55 return vp_id; 56 } 57 58 void 59 qla24xx_deallocate_vp_id(scsi_qla_host_t *vha) 60 { 61 uint16_t vp_id; 62 struct qla_hw_data *ha = vha->hw; 63 unsigned long flags = 0; 64 65 mutex_lock(&ha->vport_lock); 66 /* 67 * Wait for all pending activities to finish before removing vport from 68 * the list. 69 * Lock needs to be held for safe removal from the list (it 70 * ensures no active vp_list traversal while the vport is removed 71 * from the queue) 72 */ 73 spin_lock_irqsave(&ha->vport_slock, flags); 74 while (atomic_read(&vha->vref_count)) { 75 spin_unlock_irqrestore(&ha->vport_slock, flags); 76 77 msleep(500); 78 79 spin_lock_irqsave(&ha->vport_slock, flags); 80 } 81 list_del(&vha->list); 82 spin_unlock_irqrestore(&ha->vport_slock, flags); 83 84 vp_id = vha->vp_idx; 85 ha->num_vhosts--; 86 clear_bit(vp_id, ha->vp_idx_map); 87 88 mutex_unlock(&ha->vport_lock); 89 } 90 91 static scsi_qla_host_t * 92 qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name) 93 { 94 scsi_qla_host_t *vha; 95 struct scsi_qla_host *tvha; 96 unsigned long flags; 97 98 spin_lock_irqsave(&ha->vport_slock, flags); 99 /* Locate matching device in database. */ 100 list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) { 101 if (!memcmp(port_name, vha->port_name, WWN_SIZE)) { 102 spin_unlock_irqrestore(&ha->vport_slock, flags); 103 return vha; 104 } 105 } 106 spin_unlock_irqrestore(&ha->vport_slock, flags); 107 return NULL; 108 } 109 110 /* 111 * qla2x00_mark_vp_devices_dead 112 * Updates fcport state when device goes offline. 113 * 114 * Input: 115 * ha = adapter block pointer. 116 * fcport = port structure pointer. 117 * 118 * Return: 119 * None. 120 * 121 * Context: 122 */ 123 static void 124 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha) 125 { 126 /* 127 * !!! NOTE !!! 128 * This function, if called in contexts other than vp create, disable 129 * or delete, please make sure this is synchronized with the 130 * delete thread. 131 */ 132 fc_port_t *fcport; 133 134 list_for_each_entry(fcport, &vha->vp_fcports, list) { 135 ql_dbg(ql_dbg_vport, vha, 0xa001, 136 "Marking port dead, loop_id=0x%04x : %x.\n", 137 fcport->loop_id, fcport->vp_idx); 138 139 qla2x00_mark_device_lost(vha, fcport, 0, 0); 140 qla2x00_set_fcport_state(fcport, FCS_UNCONFIGURED); 141 } 142 } 143 144 int 145 qla24xx_disable_vp(scsi_qla_host_t *vha) 146 { 147 int ret; 148 149 ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL); 150 atomic_set(&vha->loop_state, LOOP_DOWN); 151 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 152 153 qla2x00_mark_vp_devices_dead(vha); 154 atomic_set(&vha->vp_state, VP_FAILED); 155 vha->flags.management_server_logged_in = 0; 156 if (ret == QLA_SUCCESS) { 157 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED); 158 } else { 159 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED); 160 return -1; 161 } 162 return 0; 163 } 164 165 int 166 qla24xx_enable_vp(scsi_qla_host_t *vha) 167 { 168 int ret; 169 struct qla_hw_data *ha = vha->hw; 170 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 171 172 /* Check if physical ha port is Up */ 173 if (atomic_read(&base_vha->loop_state) == LOOP_DOWN || 174 atomic_read(&base_vha->loop_state) == LOOP_DEAD || 175 !(ha->current_topology & ISP_CFG_F)) { 176 vha->vp_err_state = VP_ERR_PORTDWN; 177 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN); 178 goto enable_failed; 179 } 180 181 /* Initialize the new vport unless it is a persistent port */ 182 mutex_lock(&ha->vport_lock); 183 ret = qla24xx_modify_vp_config(vha); 184 mutex_unlock(&ha->vport_lock); 185 186 if (ret != QLA_SUCCESS) { 187 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED); 188 goto enable_failed; 189 } 190 191 ql_dbg(ql_dbg_taskm, vha, 0x801a, 192 "Virtual port with id: %d - Enabled.\n", vha->vp_idx); 193 return 0; 194 195 enable_failed: 196 ql_dbg(ql_dbg_taskm, vha, 0x801b, 197 "Virtual port with id: %d - Disabled.\n", vha->vp_idx); 198 return 1; 199 } 200 201 static void 202 qla24xx_configure_vp(scsi_qla_host_t *vha) 203 { 204 struct fc_vport *fc_vport; 205 int ret; 206 207 fc_vport = vha->fc_vport; 208 209 ql_dbg(ql_dbg_vport, vha, 0xa002, 210 "%s: change request #3.\n", __func__); 211 ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx); 212 if (ret != QLA_SUCCESS) { 213 ql_dbg(ql_dbg_vport, vha, 0xa003, "Failed to enable " 214 "receiving of RSCN requests: 0x%x.\n", ret); 215 return; 216 } else { 217 /* Corresponds to SCR enabled */ 218 clear_bit(VP_SCR_NEEDED, &vha->vp_flags); 219 } 220 221 vha->flags.online = 1; 222 if (qla24xx_configure_vhba(vha)) 223 return; 224 225 atomic_set(&vha->vp_state, VP_ACTIVE); 226 fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE); 227 } 228 229 void 230 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb) 231 { 232 scsi_qla_host_t *vha; 233 struct qla_hw_data *ha = rsp->hw; 234 int i = 0; 235 unsigned long flags; 236 237 spin_lock_irqsave(&ha->vport_slock, flags); 238 list_for_each_entry(vha, &ha->vp_list, list) { 239 if (vha->vp_idx) { 240 atomic_inc(&vha->vref_count); 241 spin_unlock_irqrestore(&ha->vport_slock, flags); 242 243 switch (mb[0]) { 244 case MBA_LIP_OCCURRED: 245 case MBA_LOOP_UP: 246 case MBA_LOOP_DOWN: 247 case MBA_LIP_RESET: 248 case MBA_POINT_TO_POINT: 249 case MBA_CHG_IN_CONNECTION: 250 case MBA_PORT_UPDATE: 251 case MBA_RSCN_UPDATE: 252 ql_dbg(ql_dbg_async, vha, 0x5024, 253 "Async_event for VP[%d], mb=0x%x vha=%p.\n", 254 i, *mb, vha); 255 qla2x00_async_event(vha, rsp, mb); 256 break; 257 } 258 259 spin_lock_irqsave(&ha->vport_slock, flags); 260 atomic_dec(&vha->vref_count); 261 } 262 i++; 263 } 264 spin_unlock_irqrestore(&ha->vport_slock, flags); 265 } 266 267 int 268 qla2x00_vp_abort_isp(scsi_qla_host_t *vha) 269 { 270 /* 271 * Physical port will do most of the abort and recovery work. We can 272 * just treat it as a loop down 273 */ 274 if (atomic_read(&vha->loop_state) != LOOP_DOWN) { 275 atomic_set(&vha->loop_state, LOOP_DOWN); 276 qla2x00_mark_all_devices_lost(vha, 0); 277 } else { 278 if (!atomic_read(&vha->loop_down_timer)) 279 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 280 } 281 282 /* 283 * To exclusively reset vport, we need to log it out first. Note: this 284 * control_vp can fail if ISP reset is already issued, this is 285 * expected, as the vp would be already logged out due to ISP reset. 286 */ 287 if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)) 288 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL); 289 290 ql_dbg(ql_dbg_taskm, vha, 0x801d, 291 "Scheduling enable of Vport %d.\n", vha->vp_idx); 292 return qla24xx_enable_vp(vha); 293 } 294 295 static int 296 qla2x00_do_dpc_vp(scsi_qla_host_t *vha) 297 { 298 ql_dbg(ql_dbg_dpc, vha, 0x4012, 299 "Entering %s.\n", __func__); 300 ql_dbg(ql_dbg_dpc, vha, 0x4013, 301 "vp_flags: 0x%lx.\n", vha->vp_flags); 302 303 qla2x00_do_work(vha); 304 305 if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) { 306 /* VP acquired. complete port configuration */ 307 ql_dbg(ql_dbg_dpc, vha, 0x4014, 308 "Configure VP scheduled.\n"); 309 qla24xx_configure_vp(vha); 310 ql_dbg(ql_dbg_dpc, vha, 0x4015, 311 "Configure VP end.\n"); 312 return 0; 313 } 314 315 if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) { 316 ql_dbg(ql_dbg_dpc, vha, 0x4016, 317 "FCPort update scheduled.\n"); 318 qla2x00_update_fcports(vha); 319 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags); 320 ql_dbg(ql_dbg_dpc, vha, 0x4017, 321 "FCPort update end.\n"); 322 } 323 324 if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) && 325 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) && 326 atomic_read(&vha->loop_state) != LOOP_DOWN) { 327 328 ql_dbg(ql_dbg_dpc, vha, 0x4018, 329 "Relogin needed scheduled.\n"); 330 qla2x00_relogin(vha); 331 ql_dbg(ql_dbg_dpc, vha, 0x4019, 332 "Relogin needed end.\n"); 333 } 334 335 if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) && 336 (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) { 337 clear_bit(RESET_ACTIVE, &vha->dpc_flags); 338 } 339 340 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) { 341 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) { 342 ql_dbg(ql_dbg_dpc, vha, 0x401a, 343 "Loop resync scheduled.\n"); 344 qla2x00_loop_resync(vha); 345 clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags); 346 ql_dbg(ql_dbg_dpc, vha, 0x401b, 347 "Loop resync end.\n"); 348 } 349 } 350 351 ql_dbg(ql_dbg_dpc, vha, 0x401c, 352 "Exiting %s.\n", __func__); 353 return 0; 354 } 355 356 void 357 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha) 358 { 359 int ret; 360 struct qla_hw_data *ha = vha->hw; 361 scsi_qla_host_t *vp; 362 unsigned long flags = 0; 363 364 if (vha->vp_idx) 365 return; 366 if (list_empty(&ha->vp_list)) 367 return; 368 369 clear_bit(VP_DPC_NEEDED, &vha->dpc_flags); 370 371 if (!(ha->current_topology & ISP_CFG_F)) 372 return; 373 374 spin_lock_irqsave(&ha->vport_slock, flags); 375 list_for_each_entry(vp, &ha->vp_list, list) { 376 if (vp->vp_idx) { 377 atomic_inc(&vp->vref_count); 378 spin_unlock_irqrestore(&ha->vport_slock, flags); 379 380 ret = qla2x00_do_dpc_vp(vp); 381 382 spin_lock_irqsave(&ha->vport_slock, flags); 383 atomic_dec(&vp->vref_count); 384 } 385 } 386 spin_unlock_irqrestore(&ha->vport_slock, flags); 387 } 388 389 int 390 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport) 391 { 392 scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost); 393 struct qla_hw_data *ha = base_vha->hw; 394 scsi_qla_host_t *vha; 395 uint8_t port_name[WWN_SIZE]; 396 397 if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR) 398 return VPCERR_UNSUPPORTED; 399 400 /* Check up the F/W and H/W support NPIV */ 401 if (!ha->flags.npiv_supported) 402 return VPCERR_UNSUPPORTED; 403 404 /* Check up whether npiv supported switch presented */ 405 if (!(ha->switch_cap & FLOGI_MID_SUPPORT)) 406 return VPCERR_NO_FABRIC_SUPP; 407 408 /* Check up unique WWPN */ 409 u64_to_wwn(fc_vport->port_name, port_name); 410 if (!memcmp(port_name, base_vha->port_name, WWN_SIZE)) 411 return VPCERR_BAD_WWN; 412 vha = qla24xx_find_vhost_by_name(ha, port_name); 413 if (vha) 414 return VPCERR_BAD_WWN; 415 416 /* Check up max-npiv-supports */ 417 if (ha->num_vhosts > ha->max_npiv_vports) { 418 ql_dbg(ql_dbg_vport, vha, 0xa004, 419 "num_vhosts %ud is bigger " 420 "than max_npiv_vports %ud.\n", 421 ha->num_vhosts, ha->max_npiv_vports); 422 return VPCERR_UNSUPPORTED; 423 } 424 return 0; 425 } 426 427 scsi_qla_host_t * 428 qla24xx_create_vhost(struct fc_vport *fc_vport) 429 { 430 scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost); 431 struct qla_hw_data *ha = base_vha->hw; 432 scsi_qla_host_t *vha; 433 struct scsi_host_template *sht = &qla2xxx_driver_template; 434 struct Scsi_Host *host; 435 436 vha = qla2x00_create_host(sht, ha); 437 if (!vha) { 438 ql_log(ql_log_warn, vha, 0xa005, 439 "scsi_host_alloc() failed for vport.\n"); 440 return(NULL); 441 } 442 443 host = vha->host; 444 fc_vport->dd_data = vha; 445 /* New host info */ 446 u64_to_wwn(fc_vport->node_name, vha->node_name); 447 u64_to_wwn(fc_vport->port_name, vha->port_name); 448 449 vha->fc_vport = fc_vport; 450 vha->device_flags = 0; 451 vha->vp_idx = qla24xx_allocate_vp_id(vha); 452 if (vha->vp_idx > ha->max_npiv_vports) { 453 ql_dbg(ql_dbg_vport, vha, 0xa006, 454 "Couldn't allocate vp_id.\n"); 455 goto create_vhost_failed; 456 } 457 vha->mgmt_svr_loop_id = 10 + vha->vp_idx; 458 459 vha->dpc_flags = 0L; 460 461 /* 462 * To fix the issue of processing a parent's RSCN for the vport before 463 * its SCR is complete. 464 */ 465 set_bit(VP_SCR_NEEDED, &vha->vp_flags); 466 atomic_set(&vha->loop_state, LOOP_DOWN); 467 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 468 469 qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL); 470 471 vha->req = base_vha->req; 472 host->can_queue = base_vha->req->length + 128; 473 host->this_id = 255; 474 host->cmd_per_lun = 3; 475 if (IS_T10_PI_CAPABLE(ha) && ql2xenabledif) 476 host->max_cmd_len = 32; 477 else 478 host->max_cmd_len = MAX_CMDSZ; 479 host->max_channel = MAX_BUSES - 1; 480 host->max_lun = ql2xmaxlun; 481 host->unique_id = host->host_no; 482 host->max_id = MAX_TARGETS_2200; 483 host->transportt = qla2xxx_transport_vport_template; 484 485 ql_dbg(ql_dbg_vport, vha, 0xa007, 486 "Detect vport hba %ld at address = %p.\n", 487 vha->host_no, vha); 488 489 vha->flags.init_done = 1; 490 491 mutex_lock(&ha->vport_lock); 492 set_bit(vha->vp_idx, ha->vp_idx_map); 493 ha->cur_vport_count++; 494 mutex_unlock(&ha->vport_lock); 495 496 return vha; 497 498 create_vhost_failed: 499 return NULL; 500 } 501 502 static void 503 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req) 504 { 505 struct qla_hw_data *ha = vha->hw; 506 uint16_t que_id = req->id; 507 508 dma_free_coherent(&ha->pdev->dev, (req->length + 1) * 509 sizeof(request_t), req->ring, req->dma); 510 req->ring = NULL; 511 req->dma = 0; 512 if (que_id) { 513 ha->req_q_map[que_id] = NULL; 514 mutex_lock(&ha->vport_lock); 515 clear_bit(que_id, ha->req_qid_map); 516 mutex_unlock(&ha->vport_lock); 517 } 518 kfree(req); 519 req = NULL; 520 } 521 522 static void 523 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp) 524 { 525 struct qla_hw_data *ha = vha->hw; 526 uint16_t que_id = rsp->id; 527 528 if (rsp->msix && rsp->msix->have_irq) { 529 free_irq(rsp->msix->vector, rsp); 530 rsp->msix->have_irq = 0; 531 rsp->msix->rsp = NULL; 532 } 533 dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) * 534 sizeof(response_t), rsp->ring, rsp->dma); 535 rsp->ring = NULL; 536 rsp->dma = 0; 537 if (que_id) { 538 ha->rsp_q_map[que_id] = NULL; 539 mutex_lock(&ha->vport_lock); 540 clear_bit(que_id, ha->rsp_qid_map); 541 mutex_unlock(&ha->vport_lock); 542 } 543 kfree(rsp); 544 rsp = NULL; 545 } 546 547 int 548 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req) 549 { 550 int ret = -1; 551 552 if (req) { 553 req->options |= BIT_0; 554 ret = qla25xx_init_req_que(vha, req); 555 } 556 if (ret == QLA_SUCCESS) 557 qla25xx_free_req_que(vha, req); 558 559 return ret; 560 } 561 562 static int 563 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp) 564 { 565 int ret = -1; 566 567 if (rsp) { 568 rsp->options |= BIT_0; 569 ret = qla25xx_init_rsp_que(vha, rsp); 570 } 571 if (ret == QLA_SUCCESS) 572 qla25xx_free_rsp_que(vha, rsp); 573 574 return ret; 575 } 576 577 /* Delete all queues for a given vhost */ 578 int 579 qla25xx_delete_queues(struct scsi_qla_host *vha) 580 { 581 int cnt, ret = 0; 582 struct req_que *req = NULL; 583 struct rsp_que *rsp = NULL; 584 struct qla_hw_data *ha = vha->hw; 585 586 /* Delete request queues */ 587 for (cnt = 1; cnt < ha->max_req_queues; cnt++) { 588 req = ha->req_q_map[cnt]; 589 if (req) { 590 ret = qla25xx_delete_req_que(vha, req); 591 if (ret != QLA_SUCCESS) { 592 ql_log(ql_log_warn, vha, 0x00ea, 593 "Couldn't delete req que %d.\n", 594 req->id); 595 return ret; 596 } 597 } 598 } 599 600 /* Delete response queues */ 601 for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) { 602 rsp = ha->rsp_q_map[cnt]; 603 if (rsp) { 604 ret = qla25xx_delete_rsp_que(vha, rsp); 605 if (ret != QLA_SUCCESS) { 606 ql_log(ql_log_warn, vha, 0x00eb, 607 "Couldn't delete rsp que %d.\n", 608 rsp->id); 609 return ret; 610 } 611 } 612 } 613 return ret; 614 } 615 616 int 617 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options, 618 uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos) 619 { 620 int ret = 0; 621 struct req_que *req = NULL; 622 struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev); 623 uint16_t que_id = 0; 624 device_reg_t __iomem *reg; 625 uint32_t cnt; 626 627 req = kzalloc(sizeof(struct req_que), GFP_KERNEL); 628 if (req == NULL) { 629 ql_log(ql_log_fatal, base_vha, 0x00d9, 630 "Failed to allocate memory for request queue.\n"); 631 goto failed; 632 } 633 634 req->length = REQUEST_ENTRY_CNT_24XX; 635 req->ring = dma_alloc_coherent(&ha->pdev->dev, 636 (req->length + 1) * sizeof(request_t), 637 &req->dma, GFP_KERNEL); 638 if (req->ring == NULL) { 639 ql_log(ql_log_fatal, base_vha, 0x00da, 640 "Failed to allocte memory for request_ring.\n"); 641 goto que_failed; 642 } 643 644 mutex_lock(&ha->vport_lock); 645 que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues); 646 if (que_id >= ha->max_req_queues) { 647 mutex_unlock(&ha->vport_lock); 648 ql_log(ql_log_warn, base_vha, 0x00db, 649 "No resources to create additional request queue.\n"); 650 goto que_failed; 651 } 652 set_bit(que_id, ha->req_qid_map); 653 ha->req_q_map[que_id] = req; 654 req->rid = rid; 655 req->vp_idx = vp_idx; 656 req->qos = qos; 657 658 ql_dbg(ql_dbg_multiq, base_vha, 0xc002, 659 "queue_id=%d rid=%d vp_idx=%d qos=%d.\n", 660 que_id, req->rid, req->vp_idx, req->qos); 661 ql_dbg(ql_dbg_init, base_vha, 0x00dc, 662 "queue_id=%d rid=%d vp_idx=%d qos=%d.\n", 663 que_id, req->rid, req->vp_idx, req->qos); 664 if (rsp_que < 0) 665 req->rsp = NULL; 666 else 667 req->rsp = ha->rsp_q_map[rsp_que]; 668 /* Use alternate PCI bus number */ 669 if (MSB(req->rid)) 670 options |= BIT_4; 671 /* Use alternate PCI devfn */ 672 if (LSB(req->rid)) 673 options |= BIT_5; 674 req->options = options; 675 676 ql_dbg(ql_dbg_multiq, base_vha, 0xc003, 677 "options=0x%x.\n", req->options); 678 ql_dbg(ql_dbg_init, base_vha, 0x00dd, 679 "options=0x%x.\n", req->options); 680 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) 681 req->outstanding_cmds[cnt] = NULL; 682 req->current_outstanding_cmd = 1; 683 684 req->ring_ptr = req->ring; 685 req->ring_index = 0; 686 req->cnt = req->length; 687 req->id = que_id; 688 reg = ISP_QUE_REG(ha, que_id); 689 req->max_q_depth = ha->req_q_map[0]->max_q_depth; 690 mutex_unlock(&ha->vport_lock); 691 ql_dbg(ql_dbg_multiq, base_vha, 0xc004, 692 "ring_ptr=%p ring_index=%d, " 693 "cnt=%d id=%d max_q_depth=%d.\n", 694 req->ring_ptr, req->ring_index, 695 req->cnt, req->id, req->max_q_depth); 696 ql_dbg(ql_dbg_init, base_vha, 0x00de, 697 "ring_ptr=%p ring_index=%d, " 698 "cnt=%d id=%d max_q_depth=%d.\n", 699 req->ring_ptr, req->ring_index, req->cnt, 700 req->id, req->max_q_depth); 701 702 ret = qla25xx_init_req_que(base_vha, req); 703 if (ret != QLA_SUCCESS) { 704 ql_log(ql_log_fatal, base_vha, 0x00df, 705 "%s failed.\n", __func__); 706 mutex_lock(&ha->vport_lock); 707 clear_bit(que_id, ha->req_qid_map); 708 mutex_unlock(&ha->vport_lock); 709 goto que_failed; 710 } 711 712 return req->id; 713 714 que_failed: 715 qla25xx_free_req_que(base_vha, req); 716 failed: 717 return 0; 718 } 719 720 static void qla_do_work(struct work_struct *work) 721 { 722 unsigned long flags; 723 struct rsp_que *rsp = container_of(work, struct rsp_que, q_work); 724 struct scsi_qla_host *vha; 725 struct qla_hw_data *ha = rsp->hw; 726 727 spin_lock_irqsave(&rsp->hw->hardware_lock, flags); 728 vha = pci_get_drvdata(ha->pdev); 729 qla24xx_process_response_queue(vha, rsp); 730 spin_unlock_irqrestore(&rsp->hw->hardware_lock, flags); 731 } 732 733 /* create response queue */ 734 int 735 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options, 736 uint8_t vp_idx, uint16_t rid, int req) 737 { 738 int ret = 0; 739 struct rsp_que *rsp = NULL; 740 struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev); 741 uint16_t que_id = 0; 742 device_reg_t __iomem *reg; 743 744 rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL); 745 if (rsp == NULL) { 746 ql_log(ql_log_warn, base_vha, 0x0066, 747 "Failed to allocate memory for response queue.\n"); 748 goto failed; 749 } 750 751 rsp->length = RESPONSE_ENTRY_CNT_MQ; 752 rsp->ring = dma_alloc_coherent(&ha->pdev->dev, 753 (rsp->length + 1) * sizeof(response_t), 754 &rsp->dma, GFP_KERNEL); 755 if (rsp->ring == NULL) { 756 ql_log(ql_log_warn, base_vha, 0x00e1, 757 "Failed to allocate memory for response ring.\n"); 758 goto que_failed; 759 } 760 761 mutex_lock(&ha->vport_lock); 762 que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues); 763 if (que_id >= ha->max_rsp_queues) { 764 mutex_unlock(&ha->vport_lock); 765 ql_log(ql_log_warn, base_vha, 0x00e2, 766 "No resources to create additional request queue.\n"); 767 goto que_failed; 768 } 769 set_bit(que_id, ha->rsp_qid_map); 770 771 if (ha->flags.msix_enabled) 772 rsp->msix = &ha->msix_entries[que_id + 1]; 773 else 774 ql_log(ql_log_warn, base_vha, 0x00e3, 775 "MSIX not enalbled.\n"); 776 777 ha->rsp_q_map[que_id] = rsp; 778 rsp->rid = rid; 779 rsp->vp_idx = vp_idx; 780 rsp->hw = ha; 781 ql_dbg(ql_dbg_init, base_vha, 0x00e4, 782 "queue_id=%d rid=%d vp_idx=%d hw=%p.\n", 783 que_id, rsp->rid, rsp->vp_idx, rsp->hw); 784 /* Use alternate PCI bus number */ 785 if (MSB(rsp->rid)) 786 options |= BIT_4; 787 /* Use alternate PCI devfn */ 788 if (LSB(rsp->rid)) 789 options |= BIT_5; 790 /* Enable MSIX handshake mode on for uncapable adapters */ 791 if (!IS_MSIX_NACK_CAPABLE(ha)) 792 options |= BIT_6; 793 794 rsp->options = options; 795 rsp->id = que_id; 796 reg = ISP_QUE_REG(ha, que_id); 797 rsp->rsp_q_in = ®->isp25mq.rsp_q_in; 798 rsp->rsp_q_out = ®->isp25mq.rsp_q_out; 799 mutex_unlock(&ha->vport_lock); 800 ql_dbg(ql_dbg_multiq, base_vha, 0xc00b, 801 "options=%x id=%d rsp_q_in=%p rsp_q_out=%p", 802 rsp->options, rsp->id, rsp->rsp_q_in, 803 rsp->rsp_q_out); 804 ql_dbg(ql_dbg_init, base_vha, 0x00e5, 805 "options=%x id=%d rsp_q_in=%p rsp_q_out=%p", 806 rsp->options, rsp->id, rsp->rsp_q_in, 807 rsp->rsp_q_out); 808 809 ret = qla25xx_request_irq(rsp); 810 if (ret) 811 goto que_failed; 812 813 ret = qla25xx_init_rsp_que(base_vha, rsp); 814 if (ret != QLA_SUCCESS) { 815 ql_log(ql_log_fatal, base_vha, 0x00e7, 816 "%s failed.\n", __func__); 817 mutex_lock(&ha->vport_lock); 818 clear_bit(que_id, ha->rsp_qid_map); 819 mutex_unlock(&ha->vport_lock); 820 goto que_failed; 821 } 822 if (req >= 0) 823 rsp->req = ha->req_q_map[req]; 824 else 825 rsp->req = NULL; 826 827 qla2x00_init_response_q_entries(rsp); 828 if (rsp->hw->wq) 829 INIT_WORK(&rsp->q_work, qla_do_work); 830 return rsp->id; 831 832 que_failed: 833 qla25xx_free_rsp_que(base_vha, rsp); 834 failed: 835 return 0; 836 } 837