1 /* 2 * QLogic Fibre Channel HBA Driver 3 * Copyright (c) 2003-2010 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 DEBUG15(printk ("vp_id %d is bigger than max-supported %d.\n", 40 vp_id, ha->max_npiv_vports)); 41 mutex_unlock(&ha->vport_lock); 42 return vp_id; 43 } 44 45 set_bit(vp_id, ha->vp_idx_map); 46 ha->num_vhosts++; 47 vha->vp_idx = vp_id; 48 49 spin_lock_irqsave(&ha->vport_slock, flags); 50 list_add_tail(&vha->list, &ha->vp_list); 51 spin_unlock_irqrestore(&ha->vport_slock, flags); 52 53 mutex_unlock(&ha->vport_lock); 54 return vp_id; 55 } 56 57 void 58 qla24xx_deallocate_vp_id(scsi_qla_host_t *vha) 59 { 60 uint16_t vp_id; 61 struct qla_hw_data *ha = vha->hw; 62 unsigned long flags = 0; 63 64 mutex_lock(&ha->vport_lock); 65 /* 66 * Wait for all pending activities to finish before removing vport from 67 * the list. 68 * Lock needs to be held for safe removal from the list (it 69 * ensures no active vp_list traversal while the vport is removed 70 * from the queue) 71 */ 72 spin_lock_irqsave(&ha->vport_slock, flags); 73 while (atomic_read(&vha->vref_count)) { 74 spin_unlock_irqrestore(&ha->vport_slock, flags); 75 76 msleep(500); 77 78 spin_lock_irqsave(&ha->vport_slock, flags); 79 } 80 list_del(&vha->list); 81 spin_unlock_irqrestore(&ha->vport_slock, flags); 82 83 vp_id = vha->vp_idx; 84 ha->num_vhosts--; 85 clear_bit(vp_id, ha->vp_idx_map); 86 87 mutex_unlock(&ha->vport_lock); 88 } 89 90 static scsi_qla_host_t * 91 qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name) 92 { 93 scsi_qla_host_t *vha; 94 struct scsi_qla_host *tvha; 95 unsigned long flags; 96 97 spin_lock_irqsave(&ha->vport_slock, flags); 98 /* Locate matching device in database. */ 99 list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) { 100 if (!memcmp(port_name, vha->port_name, WWN_SIZE)) { 101 spin_unlock_irqrestore(&ha->vport_slock, flags); 102 return vha; 103 } 104 } 105 spin_unlock_irqrestore(&ha->vport_slock, flags); 106 return NULL; 107 } 108 109 /* 110 * qla2x00_mark_vp_devices_dead 111 * Updates fcport state when device goes offline. 112 * 113 * Input: 114 * ha = adapter block pointer. 115 * fcport = port structure pointer. 116 * 117 * Return: 118 * None. 119 * 120 * Context: 121 */ 122 static void 123 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha) 124 { 125 /* 126 * !!! NOTE !!! 127 * This function, if called in contexts other than vp create, disable 128 * or delete, please make sure this is synchronized with the 129 * delete thread. 130 */ 131 fc_port_t *fcport; 132 133 list_for_each_entry(fcport, &vha->vp_fcports, list) { 134 DEBUG15(printk("scsi(%ld): Marking port dead, " 135 "loop_id=0x%04x :%x\n", 136 vha->host_no, fcport->loop_id, fcport->vp_idx)); 137 138 qla2x00_mark_device_lost(vha, fcport, 0, 0); 139 atomic_set(&fcport->state, FCS_UNCONFIGURED); 140 } 141 } 142 143 int 144 qla24xx_disable_vp(scsi_qla_host_t *vha) 145 { 146 int ret; 147 148 ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL); 149 atomic_set(&vha->loop_state, LOOP_DOWN); 150 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 151 152 qla2x00_mark_vp_devices_dead(vha); 153 atomic_set(&vha->vp_state, VP_FAILED); 154 vha->flags.management_server_logged_in = 0; 155 if (ret == QLA_SUCCESS) { 156 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED); 157 } else { 158 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED); 159 return -1; 160 } 161 return 0; 162 } 163 164 int 165 qla24xx_enable_vp(scsi_qla_host_t *vha) 166 { 167 int ret; 168 struct qla_hw_data *ha = vha->hw; 169 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 170 171 /* Check if physical ha port is Up */ 172 if (atomic_read(&base_vha->loop_state) == LOOP_DOWN || 173 atomic_read(&base_vha->loop_state) == LOOP_DEAD || 174 !(ha->current_topology & ISP_CFG_F)) { 175 vha->vp_err_state = VP_ERR_PORTDWN; 176 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN); 177 goto enable_failed; 178 } 179 180 /* Initialize the new vport unless it is a persistent port */ 181 mutex_lock(&ha->vport_lock); 182 ret = qla24xx_modify_vp_config(vha); 183 mutex_unlock(&ha->vport_lock); 184 185 if (ret != QLA_SUCCESS) { 186 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED); 187 goto enable_failed; 188 } 189 190 DEBUG15(qla_printk(KERN_INFO, ha, 191 "Virtual port with id: %d - Enabled\n", vha->vp_idx)); 192 return 0; 193 194 enable_failed: 195 DEBUG15(qla_printk(KERN_INFO, ha, 196 "Virtual port with id: %d - Disabled\n", vha->vp_idx)); 197 return 1; 198 } 199 200 static void 201 qla24xx_configure_vp(scsi_qla_host_t *vha) 202 { 203 struct fc_vport *fc_vport; 204 int ret; 205 206 fc_vport = vha->fc_vport; 207 208 DEBUG15(printk("scsi(%ld): %s: change request #3 for this host.\n", 209 vha->host_no, __func__)); 210 ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx); 211 if (ret != QLA_SUCCESS) { 212 DEBUG15(qla_printk(KERN_ERR, vha->hw, "Failed to enable " 213 "receiving of RSCN requests: 0x%x\n", ret)); 214 return; 215 } else { 216 /* Corresponds to SCR enabled */ 217 clear_bit(VP_SCR_NEEDED, &vha->vp_flags); 218 } 219 220 vha->flags.online = 1; 221 if (qla24xx_configure_vhba(vha)) 222 return; 223 224 atomic_set(&vha->vp_state, VP_ACTIVE); 225 fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE); 226 } 227 228 void 229 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb) 230 { 231 scsi_qla_host_t *vha; 232 struct qla_hw_data *ha = rsp->hw; 233 int i = 0; 234 unsigned long flags; 235 236 spin_lock_irqsave(&ha->vport_slock, flags); 237 list_for_each_entry(vha, &ha->vp_list, list) { 238 if (vha->vp_idx) { 239 atomic_inc(&vha->vref_count); 240 spin_unlock_irqrestore(&ha->vport_slock, flags); 241 242 switch (mb[0]) { 243 case MBA_LIP_OCCURRED: 244 case MBA_LOOP_UP: 245 case MBA_LOOP_DOWN: 246 case MBA_LIP_RESET: 247 case MBA_POINT_TO_POINT: 248 case MBA_CHG_IN_CONNECTION: 249 case MBA_PORT_UPDATE: 250 case MBA_RSCN_UPDATE: 251 DEBUG15(printk("scsi(%ld)%s: Async_event for" 252 " VP[%d], mb = 0x%x, vha=%p\n", 253 vha->host_no, __func__, i, *mb, vha)); 254 qla2x00_async_event(vha, rsp, mb); 255 break; 256 } 257 258 spin_lock_irqsave(&ha->vport_slock, flags); 259 atomic_dec(&vha->vref_count); 260 } 261 i++; 262 } 263 spin_unlock_irqrestore(&ha->vport_slock, flags); 264 } 265 266 int 267 qla2x00_vp_abort_isp(scsi_qla_host_t *vha) 268 { 269 /* 270 * Physical port will do most of the abort and recovery work. We can 271 * just treat it as a loop down 272 */ 273 if (atomic_read(&vha->loop_state) != LOOP_DOWN) { 274 atomic_set(&vha->loop_state, LOOP_DOWN); 275 qla2x00_mark_all_devices_lost(vha, 0); 276 } else { 277 if (!atomic_read(&vha->loop_down_timer)) 278 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 279 } 280 281 /* 282 * To exclusively reset vport, we need to log it out first. Note: this 283 * control_vp can fail if ISP reset is already issued, this is 284 * expected, as the vp would be already logged out due to ISP reset. 285 */ 286 if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)) 287 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL); 288 289 DEBUG15(printk("scsi(%ld): Scheduling enable of Vport %d...\n", 290 vha->host_no, vha->vp_idx)); 291 return qla24xx_enable_vp(vha); 292 } 293 294 static int 295 qla2x00_do_dpc_vp(scsi_qla_host_t *vha) 296 { 297 qla2x00_do_work(vha); 298 299 if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) { 300 /* VP acquired. complete port configuration */ 301 qla24xx_configure_vp(vha); 302 return 0; 303 } 304 305 if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) { 306 qla2x00_update_fcports(vha); 307 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags); 308 } 309 310 if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) && 311 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) && 312 atomic_read(&vha->loop_state) != LOOP_DOWN) { 313 314 DEBUG(printk("scsi(%ld): qla2x00_port_login()\n", 315 vha->host_no)); 316 qla2x00_relogin(vha); 317 318 DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n", 319 vha->host_no)); 320 } 321 322 if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) && 323 (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) { 324 clear_bit(RESET_ACTIVE, &vha->dpc_flags); 325 } 326 327 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) { 328 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) { 329 qla2x00_loop_resync(vha); 330 clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags); 331 } 332 } 333 334 return 0; 335 } 336 337 void 338 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha) 339 { 340 int ret; 341 struct qla_hw_data *ha = vha->hw; 342 scsi_qla_host_t *vp; 343 unsigned long flags = 0; 344 345 if (vha->vp_idx) 346 return; 347 if (list_empty(&ha->vp_list)) 348 return; 349 350 clear_bit(VP_DPC_NEEDED, &vha->dpc_flags); 351 352 if (!(ha->current_topology & ISP_CFG_F)) 353 return; 354 355 spin_lock_irqsave(&ha->vport_slock, flags); 356 list_for_each_entry(vp, &ha->vp_list, list) { 357 if (vp->vp_idx) { 358 atomic_inc(&vp->vref_count); 359 spin_unlock_irqrestore(&ha->vport_slock, flags); 360 361 ret = qla2x00_do_dpc_vp(vp); 362 363 spin_lock_irqsave(&ha->vport_slock, flags); 364 atomic_dec(&vp->vref_count); 365 } 366 } 367 spin_unlock_irqrestore(&ha->vport_slock, flags); 368 } 369 370 int 371 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport) 372 { 373 scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost); 374 struct qla_hw_data *ha = base_vha->hw; 375 scsi_qla_host_t *vha; 376 uint8_t port_name[WWN_SIZE]; 377 378 if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR) 379 return VPCERR_UNSUPPORTED; 380 381 /* Check up the F/W and H/W support NPIV */ 382 if (!ha->flags.npiv_supported) 383 return VPCERR_UNSUPPORTED; 384 385 /* Check up whether npiv supported switch presented */ 386 if (!(ha->switch_cap & FLOGI_MID_SUPPORT)) 387 return VPCERR_NO_FABRIC_SUPP; 388 389 /* Check up unique WWPN */ 390 u64_to_wwn(fc_vport->port_name, port_name); 391 if (!memcmp(port_name, base_vha->port_name, WWN_SIZE)) 392 return VPCERR_BAD_WWN; 393 vha = qla24xx_find_vhost_by_name(ha, port_name); 394 if (vha) 395 return VPCERR_BAD_WWN; 396 397 /* Check up max-npiv-supports */ 398 if (ha->num_vhosts > ha->max_npiv_vports) { 399 DEBUG15(printk("scsi(%ld): num_vhosts %ud is bigger than " 400 "max_npv_vports %ud.\n", base_vha->host_no, 401 ha->num_vhosts, ha->max_npiv_vports)); 402 return VPCERR_UNSUPPORTED; 403 } 404 return 0; 405 } 406 407 scsi_qla_host_t * 408 qla24xx_create_vhost(struct fc_vport *fc_vport) 409 { 410 scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost); 411 struct qla_hw_data *ha = base_vha->hw; 412 scsi_qla_host_t *vha; 413 struct scsi_host_template *sht = &qla2xxx_driver_template; 414 struct Scsi_Host *host; 415 416 vha = qla2x00_create_host(sht, ha); 417 if (!vha) { 418 DEBUG(printk("qla2xxx: scsi_host_alloc() failed for vport\n")); 419 return(NULL); 420 } 421 422 host = vha->host; 423 fc_vport->dd_data = vha; 424 /* New host info */ 425 u64_to_wwn(fc_vport->node_name, vha->node_name); 426 u64_to_wwn(fc_vport->port_name, vha->port_name); 427 428 vha->fc_vport = fc_vport; 429 vha->device_flags = 0; 430 vha->vp_idx = qla24xx_allocate_vp_id(vha); 431 if (vha->vp_idx > ha->max_npiv_vports) { 432 DEBUG15(printk("scsi(%ld): Couldn't allocate vp_id.\n", 433 vha->host_no)); 434 goto create_vhost_failed; 435 } 436 vha->mgmt_svr_loop_id = 10 + vha->vp_idx; 437 438 vha->dpc_flags = 0L; 439 440 /* 441 * To fix the issue of processing a parent's RSCN for the vport before 442 * its SCR is complete. 443 */ 444 set_bit(VP_SCR_NEEDED, &vha->vp_flags); 445 atomic_set(&vha->loop_state, LOOP_DOWN); 446 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 447 448 qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL); 449 450 vha->req = base_vha->req; 451 host->can_queue = base_vha->req->length + 128; 452 host->this_id = 255; 453 host->cmd_per_lun = 3; 454 if ((IS_QLA25XX(ha) || IS_QLA81XX(ha)) && ql2xenabledif) 455 host->max_cmd_len = 32; 456 else 457 host->max_cmd_len = MAX_CMDSZ; 458 host->max_channel = MAX_BUSES - 1; 459 host->max_lun = MAX_LUNS; 460 host->unique_id = host->host_no; 461 host->max_id = MAX_TARGETS_2200; 462 host->transportt = qla2xxx_transport_vport_template; 463 464 DEBUG15(printk("DEBUG: detect vport hba %ld at address = %p\n", 465 vha->host_no, vha)); 466 467 vha->flags.init_done = 1; 468 469 mutex_lock(&ha->vport_lock); 470 set_bit(vha->vp_idx, ha->vp_idx_map); 471 ha->cur_vport_count++; 472 mutex_unlock(&ha->vport_lock); 473 474 return vha; 475 476 create_vhost_failed: 477 return NULL; 478 } 479 480 static void 481 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req) 482 { 483 struct qla_hw_data *ha = vha->hw; 484 uint16_t que_id = req->id; 485 486 dma_free_coherent(&ha->pdev->dev, (req->length + 1) * 487 sizeof(request_t), req->ring, req->dma); 488 req->ring = NULL; 489 req->dma = 0; 490 if (que_id) { 491 ha->req_q_map[que_id] = NULL; 492 mutex_lock(&ha->vport_lock); 493 clear_bit(que_id, ha->req_qid_map); 494 mutex_unlock(&ha->vport_lock); 495 } 496 kfree(req); 497 req = NULL; 498 } 499 500 static void 501 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp) 502 { 503 struct qla_hw_data *ha = vha->hw; 504 uint16_t que_id = rsp->id; 505 506 if (rsp->msix && rsp->msix->have_irq) { 507 free_irq(rsp->msix->vector, rsp); 508 rsp->msix->have_irq = 0; 509 rsp->msix->rsp = NULL; 510 } 511 dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) * 512 sizeof(response_t), rsp->ring, rsp->dma); 513 rsp->ring = NULL; 514 rsp->dma = 0; 515 if (que_id) { 516 ha->rsp_q_map[que_id] = NULL; 517 mutex_lock(&ha->vport_lock); 518 clear_bit(que_id, ha->rsp_qid_map); 519 mutex_unlock(&ha->vport_lock); 520 } 521 kfree(rsp); 522 rsp = NULL; 523 } 524 525 int 526 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req) 527 { 528 int ret = -1; 529 530 if (req) { 531 req->options |= BIT_0; 532 ret = qla25xx_init_req_que(vha, req); 533 } 534 if (ret == QLA_SUCCESS) 535 qla25xx_free_req_que(vha, req); 536 537 return ret; 538 } 539 540 static int 541 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp) 542 { 543 int ret = -1; 544 545 if (rsp) { 546 rsp->options |= BIT_0; 547 ret = qla25xx_init_rsp_que(vha, rsp); 548 } 549 if (ret == QLA_SUCCESS) 550 qla25xx_free_rsp_que(vha, rsp); 551 552 return ret; 553 } 554 555 /* Delete all queues for a given vhost */ 556 int 557 qla25xx_delete_queues(struct scsi_qla_host *vha) 558 { 559 int cnt, ret = 0; 560 struct req_que *req = NULL; 561 struct rsp_que *rsp = NULL; 562 struct qla_hw_data *ha = vha->hw; 563 564 /* Delete request queues */ 565 for (cnt = 1; cnt < ha->max_req_queues; cnt++) { 566 req = ha->req_q_map[cnt]; 567 if (req) { 568 ret = qla25xx_delete_req_que(vha, req); 569 if (ret != QLA_SUCCESS) { 570 qla_printk(KERN_WARNING, ha, 571 "Couldn't delete req que %d\n", 572 req->id); 573 return ret; 574 } 575 } 576 } 577 578 /* Delete response queues */ 579 for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) { 580 rsp = ha->rsp_q_map[cnt]; 581 if (rsp) { 582 ret = qla25xx_delete_rsp_que(vha, rsp); 583 if (ret != QLA_SUCCESS) { 584 qla_printk(KERN_WARNING, ha, 585 "Couldn't delete rsp que %d\n", 586 rsp->id); 587 return ret; 588 } 589 } 590 } 591 return ret; 592 } 593 594 int 595 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options, 596 uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos) 597 { 598 int ret = 0; 599 struct req_que *req = NULL; 600 struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev); 601 uint16_t que_id = 0; 602 device_reg_t __iomem *reg; 603 uint32_t cnt; 604 605 req = kzalloc(sizeof(struct req_que), GFP_KERNEL); 606 if (req == NULL) { 607 qla_printk(KERN_WARNING, ha, "could not allocate memory" 608 "for request que\n"); 609 goto failed; 610 } 611 612 req->length = REQUEST_ENTRY_CNT_24XX; 613 req->ring = dma_alloc_coherent(&ha->pdev->dev, 614 (req->length + 1) * sizeof(request_t), 615 &req->dma, GFP_KERNEL); 616 if (req->ring == NULL) { 617 qla_printk(KERN_WARNING, ha, 618 "Memory Allocation failed - request_ring\n"); 619 goto que_failed; 620 } 621 622 mutex_lock(&ha->vport_lock); 623 que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues); 624 if (que_id >= ha->max_req_queues) { 625 mutex_unlock(&ha->vport_lock); 626 qla_printk(KERN_INFO, ha, "No resources to create " 627 "additional request queue\n"); 628 goto que_failed; 629 } 630 set_bit(que_id, ha->req_qid_map); 631 ha->req_q_map[que_id] = req; 632 req->rid = rid; 633 req->vp_idx = vp_idx; 634 req->qos = qos; 635 636 if (rsp_que < 0) 637 req->rsp = NULL; 638 else 639 req->rsp = ha->rsp_q_map[rsp_que]; 640 /* Use alternate PCI bus number */ 641 if (MSB(req->rid)) 642 options |= BIT_4; 643 /* Use alternate PCI devfn */ 644 if (LSB(req->rid)) 645 options |= BIT_5; 646 req->options = options; 647 648 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) 649 req->outstanding_cmds[cnt] = NULL; 650 req->current_outstanding_cmd = 1; 651 652 req->ring_ptr = req->ring; 653 req->ring_index = 0; 654 req->cnt = req->length; 655 req->id = que_id; 656 reg = ISP_QUE_REG(ha, que_id); 657 req->max_q_depth = ha->req_q_map[0]->max_q_depth; 658 mutex_unlock(&ha->vport_lock); 659 660 ret = qla25xx_init_req_que(base_vha, req); 661 if (ret != QLA_SUCCESS) { 662 qla_printk(KERN_WARNING, ha, "%s failed\n", __func__); 663 mutex_lock(&ha->vport_lock); 664 clear_bit(que_id, ha->req_qid_map); 665 mutex_unlock(&ha->vport_lock); 666 goto que_failed; 667 } 668 669 return req->id; 670 671 que_failed: 672 qla25xx_free_req_que(base_vha, req); 673 failed: 674 return 0; 675 } 676 677 static void qla_do_work(struct work_struct *work) 678 { 679 unsigned long flags; 680 struct rsp_que *rsp = container_of(work, struct rsp_que, q_work); 681 struct scsi_qla_host *vha; 682 struct qla_hw_data *ha = rsp->hw; 683 684 spin_lock_irqsave(&rsp->hw->hardware_lock, flags); 685 vha = pci_get_drvdata(ha->pdev); 686 qla24xx_process_response_queue(vha, rsp); 687 spin_unlock_irqrestore(&rsp->hw->hardware_lock, flags); 688 } 689 690 /* create response queue */ 691 int 692 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options, 693 uint8_t vp_idx, uint16_t rid, int req) 694 { 695 int ret = 0; 696 struct rsp_que *rsp = NULL; 697 struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev); 698 uint16_t que_id = 0; 699 device_reg_t __iomem *reg; 700 701 rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL); 702 if (rsp == NULL) { 703 qla_printk(KERN_WARNING, ha, "could not allocate memory for" 704 " response que\n"); 705 goto failed; 706 } 707 708 rsp->length = RESPONSE_ENTRY_CNT_MQ; 709 rsp->ring = dma_alloc_coherent(&ha->pdev->dev, 710 (rsp->length + 1) * sizeof(response_t), 711 &rsp->dma, GFP_KERNEL); 712 if (rsp->ring == NULL) { 713 qla_printk(KERN_WARNING, ha, 714 "Memory Allocation failed - response_ring\n"); 715 goto que_failed; 716 } 717 718 mutex_lock(&ha->vport_lock); 719 que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues); 720 if (que_id >= ha->max_rsp_queues) { 721 mutex_unlock(&ha->vport_lock); 722 qla_printk(KERN_INFO, ha, "No resources to create " 723 "additional response queue\n"); 724 goto que_failed; 725 } 726 set_bit(que_id, ha->rsp_qid_map); 727 728 if (ha->flags.msix_enabled) 729 rsp->msix = &ha->msix_entries[que_id + 1]; 730 else 731 qla_printk(KERN_WARNING, ha, "msix not enabled\n"); 732 733 ha->rsp_q_map[que_id] = rsp; 734 rsp->rid = rid; 735 rsp->vp_idx = vp_idx; 736 rsp->hw = ha; 737 /* Use alternate PCI bus number */ 738 if (MSB(rsp->rid)) 739 options |= BIT_4; 740 /* Use alternate PCI devfn */ 741 if (LSB(rsp->rid)) 742 options |= BIT_5; 743 /* Enable MSIX handshake mode on for uncapable adapters */ 744 if (!IS_MSIX_NACK_CAPABLE(ha)) 745 options |= BIT_6; 746 747 rsp->options = options; 748 rsp->id = que_id; 749 reg = ISP_QUE_REG(ha, que_id); 750 rsp->rsp_q_in = ®->isp25mq.rsp_q_in; 751 rsp->rsp_q_out = ®->isp25mq.rsp_q_out; 752 mutex_unlock(&ha->vport_lock); 753 754 ret = qla25xx_request_irq(rsp); 755 if (ret) 756 goto que_failed; 757 758 ret = qla25xx_init_rsp_que(base_vha, rsp); 759 if (ret != QLA_SUCCESS) { 760 qla_printk(KERN_WARNING, ha, "%s failed\n", __func__); 761 mutex_lock(&ha->vport_lock); 762 clear_bit(que_id, ha->rsp_qid_map); 763 mutex_unlock(&ha->vport_lock); 764 goto que_failed; 765 } 766 if (req >= 0) 767 rsp->req = ha->req_q_map[req]; 768 else 769 rsp->req = NULL; 770 771 qla2x00_init_response_q_entries(rsp); 772 if (rsp->hw->wq) 773 INIT_WORK(&rsp->q_work, qla_do_work); 774 return rsp->id; 775 776 que_failed: 777 qla25xx_free_rsp_que(base_vha, rsp); 778 failed: 779 return 0; 780 } 781