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 #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 spin_lock_irqsave(&ha->vport_slock, flags); 78 while (atomic_read(&vha->vref_count)) { 79 spin_unlock_irqrestore(&ha->vport_slock, flags); 80 81 msleep(500); 82 83 spin_lock_irqsave(&ha->vport_slock, flags); 84 } 85 list_del(&vha->list); 86 qlt_update_vp_map(vha, RESET_VP_IDX); 87 spin_unlock_irqrestore(&ha->vport_slock, flags); 88 89 vp_id = vha->vp_idx; 90 ha->num_vhosts--; 91 clear_bit(vp_id, ha->vp_idx_map); 92 93 mutex_unlock(&ha->vport_lock); 94 } 95 96 static scsi_qla_host_t * 97 qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name) 98 { 99 scsi_qla_host_t *vha; 100 struct scsi_qla_host *tvha; 101 unsigned long flags; 102 103 spin_lock_irqsave(&ha->vport_slock, flags); 104 /* Locate matching device in database. */ 105 list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) { 106 if (!memcmp(port_name, vha->port_name, WWN_SIZE)) { 107 spin_unlock_irqrestore(&ha->vport_slock, flags); 108 return vha; 109 } 110 } 111 spin_unlock_irqrestore(&ha->vport_slock, flags); 112 return NULL; 113 } 114 115 /* 116 * qla2x00_mark_vp_devices_dead 117 * Updates fcport state when device goes offline. 118 * 119 * Input: 120 * ha = adapter block pointer. 121 * fcport = port structure pointer. 122 * 123 * Return: 124 * None. 125 * 126 * Context: 127 */ 128 static void 129 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha) 130 { 131 /* 132 * !!! NOTE !!! 133 * This function, if called in contexts other than vp create, disable 134 * or delete, please make sure this is synchronized with the 135 * delete thread. 136 */ 137 fc_port_t *fcport; 138 139 list_for_each_entry(fcport, &vha->vp_fcports, list) { 140 ql_dbg(ql_dbg_vport, vha, 0xa001, 141 "Marking port dead, loop_id=0x%04x : %x.\n", 142 fcport->loop_id, fcport->vha->vp_idx); 143 144 qla2x00_mark_device_lost(vha, fcport, 0, 0); 145 qla2x00_set_fcport_state(fcport, FCS_UNCONFIGURED); 146 } 147 } 148 149 int 150 qla24xx_disable_vp(scsi_qla_host_t *vha) 151 { 152 int ret; 153 154 ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL); 155 atomic_set(&vha->loop_state, LOOP_DOWN); 156 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 157 158 /* Remove port id from vp target map */ 159 qlt_update_vp_map(vha, RESET_AL_PA); 160 161 qla2x00_mark_vp_devices_dead(vha); 162 atomic_set(&vha->vp_state, VP_FAILED); 163 vha->flags.management_server_logged_in = 0; 164 if (ret == QLA_SUCCESS) { 165 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED); 166 } else { 167 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED); 168 return -1; 169 } 170 return 0; 171 } 172 173 int 174 qla24xx_enable_vp(scsi_qla_host_t *vha) 175 { 176 int ret; 177 struct qla_hw_data *ha = vha->hw; 178 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 179 180 /* Check if physical ha port is Up */ 181 if (atomic_read(&base_vha->loop_state) == LOOP_DOWN || 182 atomic_read(&base_vha->loop_state) == LOOP_DEAD || 183 !(ha->current_topology & ISP_CFG_F)) { 184 vha->vp_err_state = VP_ERR_PORTDWN; 185 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN); 186 goto enable_failed; 187 } 188 189 /* Initialize the new vport unless it is a persistent port */ 190 mutex_lock(&ha->vport_lock); 191 ret = qla24xx_modify_vp_config(vha); 192 mutex_unlock(&ha->vport_lock); 193 194 if (ret != QLA_SUCCESS) { 195 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED); 196 goto enable_failed; 197 } 198 199 ql_dbg(ql_dbg_taskm, vha, 0x801a, 200 "Virtual port with id: %d - Enabled.\n", vha->vp_idx); 201 return 0; 202 203 enable_failed: 204 ql_dbg(ql_dbg_taskm, vha, 0x801b, 205 "Virtual port with id: %d - Disabled.\n", vha->vp_idx); 206 return 1; 207 } 208 209 static void 210 qla24xx_configure_vp(scsi_qla_host_t *vha) 211 { 212 struct fc_vport *fc_vport; 213 int ret; 214 215 fc_vport = vha->fc_vport; 216 217 ql_dbg(ql_dbg_vport, vha, 0xa002, 218 "%s: change request #3.\n", __func__); 219 ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx); 220 if (ret != QLA_SUCCESS) { 221 ql_dbg(ql_dbg_vport, vha, 0xa003, "Failed to enable " 222 "receiving of RSCN requests: 0x%x.\n", ret); 223 return; 224 } else { 225 /* Corresponds to SCR enabled */ 226 clear_bit(VP_SCR_NEEDED, &vha->vp_flags); 227 } 228 229 vha->flags.online = 1; 230 if (qla24xx_configure_vhba(vha)) 231 return; 232 233 atomic_set(&vha->vp_state, VP_ACTIVE); 234 fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE); 235 } 236 237 void 238 qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb) 239 { 240 scsi_qla_host_t *vha; 241 struct qla_hw_data *ha = rsp->hw; 242 int i = 0; 243 unsigned long flags; 244 245 spin_lock_irqsave(&ha->vport_slock, flags); 246 list_for_each_entry(vha, &ha->vp_list, list) { 247 if (vha->vp_idx) { 248 atomic_inc(&vha->vref_count); 249 spin_unlock_irqrestore(&ha->vport_slock, flags); 250 251 switch (mb[0]) { 252 case MBA_LIP_OCCURRED: 253 case MBA_LOOP_UP: 254 case MBA_LOOP_DOWN: 255 case MBA_LIP_RESET: 256 case MBA_POINT_TO_POINT: 257 case MBA_CHG_IN_CONNECTION: 258 case MBA_PORT_UPDATE: 259 case MBA_RSCN_UPDATE: 260 ql_dbg(ql_dbg_async, vha, 0x5024, 261 "Async_event for VP[%d], mb=0x%x vha=%p.\n", 262 i, *mb, vha); 263 qla2x00_async_event(vha, rsp, mb); 264 break; 265 } 266 267 spin_lock_irqsave(&ha->vport_slock, flags); 268 atomic_dec(&vha->vref_count); 269 } 270 i++; 271 } 272 spin_unlock_irqrestore(&ha->vport_slock, flags); 273 } 274 275 int 276 qla2x00_vp_abort_isp(scsi_qla_host_t *vha) 277 { 278 /* 279 * Physical port will do most of the abort and recovery work. We can 280 * just treat it as a loop down 281 */ 282 if (atomic_read(&vha->loop_state) != LOOP_DOWN) { 283 atomic_set(&vha->loop_state, LOOP_DOWN); 284 qla2x00_mark_all_devices_lost(vha, 0); 285 } else { 286 if (!atomic_read(&vha->loop_down_timer)) 287 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 288 } 289 290 /* 291 * To exclusively reset vport, we need to log it out first. Note: this 292 * control_vp can fail if ISP reset is already issued, this is 293 * expected, as the vp would be already logged out due to ISP reset. 294 */ 295 if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)) 296 qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL); 297 298 ql_dbg(ql_dbg_taskm, vha, 0x801d, 299 "Scheduling enable of Vport %d.\n", vha->vp_idx); 300 return qla24xx_enable_vp(vha); 301 } 302 303 static int 304 qla2x00_do_dpc_vp(scsi_qla_host_t *vha) 305 { 306 ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x4012, 307 "Entering %s vp_flags: 0x%lx.\n", __func__, vha->vp_flags); 308 309 qla2x00_do_work(vha); 310 311 if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) { 312 /* VP acquired. complete port configuration */ 313 ql_dbg(ql_dbg_dpc, vha, 0x4014, 314 "Configure VP scheduled.\n"); 315 qla24xx_configure_vp(vha); 316 ql_dbg(ql_dbg_dpc, vha, 0x4015, 317 "Configure VP end.\n"); 318 return 0; 319 } 320 321 if (test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags)) { 322 ql_dbg(ql_dbg_dpc, vha, 0x4016, 323 "FCPort update scheduled.\n"); 324 qla2x00_update_fcports(vha); 325 clear_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags); 326 ql_dbg(ql_dbg_dpc, vha, 0x4017, 327 "FCPort update end.\n"); 328 } 329 330 if ((test_and_clear_bit(RELOGIN_NEEDED, &vha->dpc_flags)) && 331 !test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) && 332 atomic_read(&vha->loop_state) != LOOP_DOWN) { 333 334 ql_dbg(ql_dbg_dpc, vha, 0x4018, 335 "Relogin needed scheduled.\n"); 336 qla2x00_relogin(vha); 337 ql_dbg(ql_dbg_dpc, vha, 0x4019, 338 "Relogin needed end.\n"); 339 } 340 341 if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) && 342 (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) { 343 clear_bit(RESET_ACTIVE, &vha->dpc_flags); 344 } 345 346 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) { 347 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) { 348 ql_dbg(ql_dbg_dpc, vha, 0x401a, 349 "Loop resync scheduled.\n"); 350 qla2x00_loop_resync(vha); 351 clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags); 352 ql_dbg(ql_dbg_dpc, vha, 0x401b, 353 "Loop resync end.\n"); 354 } 355 } 356 357 ql_dbg(ql_dbg_dpc + ql_dbg_verbose, vha, 0x401c, 358 "Exiting %s.\n", __func__); 359 return 0; 360 } 361 362 void 363 qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha) 364 { 365 int ret; 366 struct qla_hw_data *ha = vha->hw; 367 scsi_qla_host_t *vp; 368 unsigned long flags = 0; 369 370 if (vha->vp_idx) 371 return; 372 if (list_empty(&ha->vp_list)) 373 return; 374 375 clear_bit(VP_DPC_NEEDED, &vha->dpc_flags); 376 377 if (!(ha->current_topology & ISP_CFG_F)) 378 return; 379 380 spin_lock_irqsave(&ha->vport_slock, flags); 381 list_for_each_entry(vp, &ha->vp_list, list) { 382 if (vp->vp_idx) { 383 atomic_inc(&vp->vref_count); 384 spin_unlock_irqrestore(&ha->vport_slock, flags); 385 386 ret = qla2x00_do_dpc_vp(vp); 387 388 spin_lock_irqsave(&ha->vport_slock, flags); 389 atomic_dec(&vp->vref_count); 390 } 391 } 392 spin_unlock_irqrestore(&ha->vport_slock, flags); 393 } 394 395 int 396 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport) 397 { 398 scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost); 399 struct qla_hw_data *ha = base_vha->hw; 400 scsi_qla_host_t *vha; 401 uint8_t port_name[WWN_SIZE]; 402 403 if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR) 404 return VPCERR_UNSUPPORTED; 405 406 /* Check up the F/W and H/W support NPIV */ 407 if (!ha->flags.npiv_supported) 408 return VPCERR_UNSUPPORTED; 409 410 /* Check up whether npiv supported switch presented */ 411 if (!(ha->switch_cap & FLOGI_MID_SUPPORT)) 412 return VPCERR_NO_FABRIC_SUPP; 413 414 /* Check up unique WWPN */ 415 u64_to_wwn(fc_vport->port_name, port_name); 416 if (!memcmp(port_name, base_vha->port_name, WWN_SIZE)) 417 return VPCERR_BAD_WWN; 418 vha = qla24xx_find_vhost_by_name(ha, port_name); 419 if (vha) 420 return VPCERR_BAD_WWN; 421 422 /* Check up max-npiv-supports */ 423 if (ha->num_vhosts > ha->max_npiv_vports) { 424 ql_dbg(ql_dbg_vport, vha, 0xa004, 425 "num_vhosts %ud is bigger " 426 "than max_npiv_vports %ud.\n", 427 ha->num_vhosts, ha->max_npiv_vports); 428 return VPCERR_UNSUPPORTED; 429 } 430 return 0; 431 } 432 433 scsi_qla_host_t * 434 qla24xx_create_vhost(struct fc_vport *fc_vport) 435 { 436 scsi_qla_host_t *base_vha = shost_priv(fc_vport->shost); 437 struct qla_hw_data *ha = base_vha->hw; 438 scsi_qla_host_t *vha; 439 struct scsi_host_template *sht = &qla2xxx_driver_template; 440 struct Scsi_Host *host; 441 442 vha = qla2x00_create_host(sht, ha); 443 if (!vha) { 444 ql_log(ql_log_warn, vha, 0xa005, 445 "scsi_host_alloc() failed for vport.\n"); 446 return(NULL); 447 } 448 449 host = vha->host; 450 fc_vport->dd_data = vha; 451 /* New host info */ 452 u64_to_wwn(fc_vport->node_name, vha->node_name); 453 u64_to_wwn(fc_vport->port_name, vha->port_name); 454 455 vha->fc_vport = fc_vport; 456 vha->device_flags = 0; 457 vha->vp_idx = qla24xx_allocate_vp_id(vha); 458 if (vha->vp_idx > ha->max_npiv_vports) { 459 ql_dbg(ql_dbg_vport, vha, 0xa006, 460 "Couldn't allocate vp_id.\n"); 461 goto create_vhost_failed; 462 } 463 vha->mgmt_svr_loop_id = 10 + vha->vp_idx; 464 465 vha->dpc_flags = 0L; 466 467 /* 468 * To fix the issue of processing a parent's RSCN for the vport before 469 * its SCR is complete. 470 */ 471 set_bit(VP_SCR_NEEDED, &vha->vp_flags); 472 atomic_set(&vha->loop_state, LOOP_DOWN); 473 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 474 475 qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL); 476 477 vha->req = base_vha->req; 478 host->can_queue = base_vha->req->length + 128; 479 host->this_id = 255; 480 host->cmd_per_lun = 3; 481 if (IS_T10_PI_CAPABLE(ha) && ql2xenabledif) 482 host->max_cmd_len = 32; 483 else 484 host->max_cmd_len = MAX_CMDSZ; 485 host->max_channel = MAX_BUSES - 1; 486 host->max_lun = ql2xmaxlun; 487 host->unique_id = host->host_no; 488 host->max_id = ha->max_fibre_devices; 489 host->transportt = qla2xxx_transport_vport_template; 490 491 ql_dbg(ql_dbg_vport, vha, 0xa007, 492 "Detect vport hba %ld at address = %p.\n", 493 vha->host_no, vha); 494 495 vha->flags.init_done = 1; 496 497 mutex_lock(&ha->vport_lock); 498 set_bit(vha->vp_idx, ha->vp_idx_map); 499 ha->cur_vport_count++; 500 mutex_unlock(&ha->vport_lock); 501 502 return vha; 503 504 create_vhost_failed: 505 return NULL; 506 } 507 508 static void 509 qla25xx_free_req_que(struct scsi_qla_host *vha, struct req_que *req) 510 { 511 struct qla_hw_data *ha = vha->hw; 512 uint16_t que_id = req->id; 513 514 dma_free_coherent(&ha->pdev->dev, (req->length + 1) * 515 sizeof(request_t), req->ring, req->dma); 516 req->ring = NULL; 517 req->dma = 0; 518 if (que_id) { 519 ha->req_q_map[que_id] = NULL; 520 mutex_lock(&ha->vport_lock); 521 clear_bit(que_id, ha->req_qid_map); 522 mutex_unlock(&ha->vport_lock); 523 } 524 kfree(req); 525 req = NULL; 526 } 527 528 static void 529 qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp) 530 { 531 struct qla_hw_data *ha = vha->hw; 532 uint16_t que_id = rsp->id; 533 534 if (rsp->msix && rsp->msix->have_irq) { 535 free_irq(rsp->msix->vector, rsp); 536 rsp->msix->have_irq = 0; 537 rsp->msix->rsp = NULL; 538 } 539 dma_free_coherent(&ha->pdev->dev, (rsp->length + 1) * 540 sizeof(response_t), rsp->ring, rsp->dma); 541 rsp->ring = NULL; 542 rsp->dma = 0; 543 if (que_id) { 544 ha->rsp_q_map[que_id] = NULL; 545 mutex_lock(&ha->vport_lock); 546 clear_bit(que_id, ha->rsp_qid_map); 547 mutex_unlock(&ha->vport_lock); 548 } 549 kfree(rsp); 550 rsp = NULL; 551 } 552 553 int 554 qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req) 555 { 556 int ret = -1; 557 558 if (req) { 559 req->options |= BIT_0; 560 ret = qla25xx_init_req_que(vha, req); 561 } 562 if (ret == QLA_SUCCESS) 563 qla25xx_free_req_que(vha, req); 564 565 return ret; 566 } 567 568 static int 569 qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp) 570 { 571 int ret = -1; 572 573 if (rsp) { 574 rsp->options |= BIT_0; 575 ret = qla25xx_init_rsp_que(vha, rsp); 576 } 577 if (ret == QLA_SUCCESS) 578 qla25xx_free_rsp_que(vha, rsp); 579 580 return ret; 581 } 582 583 /* Delete all queues for a given vhost */ 584 int 585 qla25xx_delete_queues(struct scsi_qla_host *vha) 586 { 587 int cnt, ret = 0; 588 struct req_que *req = NULL; 589 struct rsp_que *rsp = NULL; 590 struct qla_hw_data *ha = vha->hw; 591 592 /* Delete request queues */ 593 for (cnt = 1; cnt < ha->max_req_queues; cnt++) { 594 req = ha->req_q_map[cnt]; 595 if (req) { 596 ret = qla25xx_delete_req_que(vha, req); 597 if (ret != QLA_SUCCESS) { 598 ql_log(ql_log_warn, vha, 0x00ea, 599 "Couldn't delete req que %d.\n", 600 req->id); 601 return ret; 602 } 603 } 604 } 605 606 /* Delete response queues */ 607 for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) { 608 rsp = ha->rsp_q_map[cnt]; 609 if (rsp) { 610 ret = qla25xx_delete_rsp_que(vha, rsp); 611 if (ret != QLA_SUCCESS) { 612 ql_log(ql_log_warn, vha, 0x00eb, 613 "Couldn't delete rsp que %d.\n", 614 rsp->id); 615 return ret; 616 } 617 } 618 } 619 return ret; 620 } 621 622 int 623 qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options, 624 uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos) 625 { 626 int ret = 0; 627 struct req_que *req = NULL; 628 struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev); 629 uint16_t que_id = 0; 630 device_reg_t __iomem *reg; 631 uint32_t cnt; 632 633 req = kzalloc(sizeof(struct req_que), GFP_KERNEL); 634 if (req == NULL) { 635 ql_log(ql_log_fatal, base_vha, 0x00d9, 636 "Failed to allocate memory for request queue.\n"); 637 goto failed; 638 } 639 640 req->length = REQUEST_ENTRY_CNT_24XX; 641 req->ring = dma_alloc_coherent(&ha->pdev->dev, 642 (req->length + 1) * sizeof(request_t), 643 &req->dma, GFP_KERNEL); 644 if (req->ring == NULL) { 645 ql_log(ql_log_fatal, base_vha, 0x00da, 646 "Failed to allocte memory for request_ring.\n"); 647 goto que_failed; 648 } 649 650 mutex_lock(&ha->vport_lock); 651 que_id = find_first_zero_bit(ha->req_qid_map, ha->max_req_queues); 652 if (que_id >= ha->max_req_queues) { 653 mutex_unlock(&ha->vport_lock); 654 ql_log(ql_log_warn, base_vha, 0x00db, 655 "No resources to create additional request queue.\n"); 656 goto que_failed; 657 } 658 set_bit(que_id, ha->req_qid_map); 659 ha->req_q_map[que_id] = req; 660 req->rid = rid; 661 req->vp_idx = vp_idx; 662 req->qos = qos; 663 664 ql_dbg(ql_dbg_multiq, base_vha, 0xc002, 665 "queue_id=%d rid=%d vp_idx=%d qos=%d.\n", 666 que_id, req->rid, req->vp_idx, req->qos); 667 ql_dbg(ql_dbg_init, base_vha, 0x00dc, 668 "queue_id=%d rid=%d vp_idx=%d qos=%d.\n", 669 que_id, req->rid, req->vp_idx, req->qos); 670 if (rsp_que < 0) 671 req->rsp = NULL; 672 else 673 req->rsp = ha->rsp_q_map[rsp_que]; 674 /* Use alternate PCI bus number */ 675 if (MSB(req->rid)) 676 options |= BIT_4; 677 /* Use alternate PCI devfn */ 678 if (LSB(req->rid)) 679 options |= BIT_5; 680 req->options = options; 681 682 ql_dbg(ql_dbg_multiq, base_vha, 0xc003, 683 "options=0x%x.\n", req->options); 684 ql_dbg(ql_dbg_init, base_vha, 0x00dd, 685 "options=0x%x.\n", req->options); 686 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) 687 req->outstanding_cmds[cnt] = NULL; 688 req->current_outstanding_cmd = 1; 689 690 req->ring_ptr = req->ring; 691 req->ring_index = 0; 692 req->cnt = req->length; 693 req->id = que_id; 694 reg = ISP_QUE_REG(ha, que_id); 695 req->max_q_depth = ha->req_q_map[0]->max_q_depth; 696 mutex_unlock(&ha->vport_lock); 697 ql_dbg(ql_dbg_multiq, base_vha, 0xc004, 698 "ring_ptr=%p ring_index=%d, " 699 "cnt=%d id=%d max_q_depth=%d.\n", 700 req->ring_ptr, req->ring_index, 701 req->cnt, req->id, req->max_q_depth); 702 ql_dbg(ql_dbg_init, base_vha, 0x00de, 703 "ring_ptr=%p ring_index=%d, " 704 "cnt=%d id=%d max_q_depth=%d.\n", 705 req->ring_ptr, req->ring_index, req->cnt, 706 req->id, req->max_q_depth); 707 708 ret = qla25xx_init_req_que(base_vha, req); 709 if (ret != QLA_SUCCESS) { 710 ql_log(ql_log_fatal, base_vha, 0x00df, 711 "%s failed.\n", __func__); 712 mutex_lock(&ha->vport_lock); 713 clear_bit(que_id, ha->req_qid_map); 714 mutex_unlock(&ha->vport_lock); 715 goto que_failed; 716 } 717 718 return req->id; 719 720 que_failed: 721 qla25xx_free_req_que(base_vha, req); 722 failed: 723 return 0; 724 } 725 726 static void qla_do_work(struct work_struct *work) 727 { 728 unsigned long flags; 729 struct rsp_que *rsp = container_of(work, struct rsp_que, q_work); 730 struct scsi_qla_host *vha; 731 struct qla_hw_data *ha = rsp->hw; 732 733 spin_lock_irqsave(&rsp->hw->hardware_lock, flags); 734 vha = pci_get_drvdata(ha->pdev); 735 qla24xx_process_response_queue(vha, rsp); 736 spin_unlock_irqrestore(&rsp->hw->hardware_lock, flags); 737 } 738 739 /* create response queue */ 740 int 741 qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options, 742 uint8_t vp_idx, uint16_t rid, int req) 743 { 744 int ret = 0; 745 struct rsp_que *rsp = NULL; 746 struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev); 747 uint16_t que_id = 0; 748 device_reg_t __iomem *reg; 749 750 rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL); 751 if (rsp == NULL) { 752 ql_log(ql_log_warn, base_vha, 0x0066, 753 "Failed to allocate memory for response queue.\n"); 754 goto failed; 755 } 756 757 rsp->length = RESPONSE_ENTRY_CNT_MQ; 758 rsp->ring = dma_alloc_coherent(&ha->pdev->dev, 759 (rsp->length + 1) * sizeof(response_t), 760 &rsp->dma, GFP_KERNEL); 761 if (rsp->ring == NULL) { 762 ql_log(ql_log_warn, base_vha, 0x00e1, 763 "Failed to allocate memory for response ring.\n"); 764 goto que_failed; 765 } 766 767 mutex_lock(&ha->vport_lock); 768 que_id = find_first_zero_bit(ha->rsp_qid_map, ha->max_rsp_queues); 769 if (que_id >= ha->max_rsp_queues) { 770 mutex_unlock(&ha->vport_lock); 771 ql_log(ql_log_warn, base_vha, 0x00e2, 772 "No resources to create additional request queue.\n"); 773 goto que_failed; 774 } 775 set_bit(que_id, ha->rsp_qid_map); 776 777 if (ha->flags.msix_enabled) 778 rsp->msix = &ha->msix_entries[que_id + 1]; 779 else 780 ql_log(ql_log_warn, base_vha, 0x00e3, 781 "MSIX not enalbled.\n"); 782 783 ha->rsp_q_map[que_id] = rsp; 784 rsp->rid = rid; 785 rsp->vp_idx = vp_idx; 786 rsp->hw = ha; 787 ql_dbg(ql_dbg_init, base_vha, 0x00e4, 788 "queue_id=%d rid=%d vp_idx=%d hw=%p.\n", 789 que_id, rsp->rid, rsp->vp_idx, rsp->hw); 790 /* Use alternate PCI bus number */ 791 if (MSB(rsp->rid)) 792 options |= BIT_4; 793 /* Use alternate PCI devfn */ 794 if (LSB(rsp->rid)) 795 options |= BIT_5; 796 /* Enable MSIX handshake mode on for uncapable adapters */ 797 if (!IS_MSIX_NACK_CAPABLE(ha)) 798 options |= BIT_6; 799 800 rsp->options = options; 801 rsp->id = que_id; 802 reg = ISP_QUE_REG(ha, que_id); 803 rsp->rsp_q_in = ®->isp25mq.rsp_q_in; 804 rsp->rsp_q_out = ®->isp25mq.rsp_q_out; 805 mutex_unlock(&ha->vport_lock); 806 ql_dbg(ql_dbg_multiq, base_vha, 0xc00b, 807 "options=%x id=%d rsp_q_in=%p rsp_q_out=%p", 808 rsp->options, rsp->id, rsp->rsp_q_in, 809 rsp->rsp_q_out); 810 ql_dbg(ql_dbg_init, base_vha, 0x00e5, 811 "options=%x id=%d rsp_q_in=%p rsp_q_out=%p", 812 rsp->options, rsp->id, rsp->rsp_q_in, 813 rsp->rsp_q_out); 814 815 ret = qla25xx_request_irq(rsp); 816 if (ret) 817 goto que_failed; 818 819 ret = qla25xx_init_rsp_que(base_vha, rsp); 820 if (ret != QLA_SUCCESS) { 821 ql_log(ql_log_fatal, base_vha, 0x00e7, 822 "%s failed.\n", __func__); 823 mutex_lock(&ha->vport_lock); 824 clear_bit(que_id, ha->rsp_qid_map); 825 mutex_unlock(&ha->vport_lock); 826 goto que_failed; 827 } 828 if (req >= 0) 829 rsp->req = ha->req_q_map[req]; 830 else 831 rsp->req = NULL; 832 833 qla2x00_init_response_q_entries(rsp); 834 if (rsp->hw->wq) 835 INIT_WORK(&rsp->q_work, qla_do_work); 836 return rsp->id; 837 838 que_failed: 839 qla25xx_free_rsp_que(base_vha, rsp); 840 failed: 841 return 0; 842 } 843