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