1 /* 2 * QLogic Fibre Channel HBA Driver 3 * Copyright (c) 2003-2013 QLogic Corporation 4 * 5 * See LICENSE.qla2xxx for copyright and licensing details. 6 */ 7 #include "qla_def.h" 8 #include "qla_target.h" 9 10 #include <linux/blkdev.h> 11 #include <linux/delay.h> 12 13 #include <scsi/scsi_tcq.h> 14 15 static void qla25xx_set_que(srb_t *, struct rsp_que **); 16 /** 17 * qla2x00_get_cmd_direction() - Determine control_flag data direction. 18 * @cmd: SCSI command 19 * 20 * Returns the proper CF_* direction based on CDB. 21 */ 22 static inline uint16_t 23 qla2x00_get_cmd_direction(srb_t *sp) 24 { 25 uint16_t cflags; 26 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 27 struct scsi_qla_host *vha = sp->fcport->vha; 28 29 cflags = 0; 30 31 /* Set transfer direction */ 32 if (cmd->sc_data_direction == DMA_TO_DEVICE) { 33 cflags = CF_WRITE; 34 vha->qla_stats.output_bytes += scsi_bufflen(cmd); 35 vha->qla_stats.output_requests++; 36 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) { 37 cflags = CF_READ; 38 vha->qla_stats.input_bytes += scsi_bufflen(cmd); 39 vha->qla_stats.input_requests++; 40 } 41 return (cflags); 42 } 43 44 /** 45 * qla2x00_calc_iocbs_32() - Determine number of Command Type 2 and 46 * Continuation Type 0 IOCBs to allocate. 47 * 48 * @dsds: number of data segment decriptors needed 49 * 50 * Returns the number of IOCB entries needed to store @dsds. 51 */ 52 uint16_t 53 qla2x00_calc_iocbs_32(uint16_t dsds) 54 { 55 uint16_t iocbs; 56 57 iocbs = 1; 58 if (dsds > 3) { 59 iocbs += (dsds - 3) / 7; 60 if ((dsds - 3) % 7) 61 iocbs++; 62 } 63 return (iocbs); 64 } 65 66 /** 67 * qla2x00_calc_iocbs_64() - Determine number of Command Type 3 and 68 * Continuation Type 1 IOCBs to allocate. 69 * 70 * @dsds: number of data segment decriptors needed 71 * 72 * Returns the number of IOCB entries needed to store @dsds. 73 */ 74 uint16_t 75 qla2x00_calc_iocbs_64(uint16_t dsds) 76 { 77 uint16_t iocbs; 78 79 iocbs = 1; 80 if (dsds > 2) { 81 iocbs += (dsds - 2) / 5; 82 if ((dsds - 2) % 5) 83 iocbs++; 84 } 85 return (iocbs); 86 } 87 88 /** 89 * qla2x00_prep_cont_type0_iocb() - Initialize a Continuation Type 0 IOCB. 90 * @ha: HA context 91 * 92 * Returns a pointer to the Continuation Type 0 IOCB packet. 93 */ 94 static inline cont_entry_t * 95 qla2x00_prep_cont_type0_iocb(struct scsi_qla_host *vha) 96 { 97 cont_entry_t *cont_pkt; 98 struct req_que *req = vha->req; 99 /* Adjust ring index. */ 100 req->ring_index++; 101 if (req->ring_index == req->length) { 102 req->ring_index = 0; 103 req->ring_ptr = req->ring; 104 } else { 105 req->ring_ptr++; 106 } 107 108 cont_pkt = (cont_entry_t *)req->ring_ptr; 109 110 /* Load packet defaults. */ 111 *((uint32_t *)(&cont_pkt->entry_type)) = 112 __constant_cpu_to_le32(CONTINUE_TYPE); 113 114 return (cont_pkt); 115 } 116 117 /** 118 * qla2x00_prep_cont_type1_iocb() - Initialize a Continuation Type 1 IOCB. 119 * @ha: HA context 120 * 121 * Returns a pointer to the continuation type 1 IOCB packet. 122 */ 123 static inline cont_a64_entry_t * 124 qla2x00_prep_cont_type1_iocb(scsi_qla_host_t *vha, struct req_que *req) 125 { 126 cont_a64_entry_t *cont_pkt; 127 128 /* Adjust ring index. */ 129 req->ring_index++; 130 if (req->ring_index == req->length) { 131 req->ring_index = 0; 132 req->ring_ptr = req->ring; 133 } else { 134 req->ring_ptr++; 135 } 136 137 cont_pkt = (cont_a64_entry_t *)req->ring_ptr; 138 139 /* Load packet defaults. */ 140 *((uint32_t *)(&cont_pkt->entry_type)) = IS_QLAFX00(vha->hw) ? 141 __constant_cpu_to_le32(CONTINUE_A64_TYPE_FX00) : 142 __constant_cpu_to_le32(CONTINUE_A64_TYPE); 143 144 return (cont_pkt); 145 } 146 147 static inline int 148 qla24xx_configure_prot_mode(srb_t *sp, uint16_t *fw_prot_opts) 149 { 150 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 151 uint8_t guard = scsi_host_get_guard(cmd->device->host); 152 153 /* We always use DIFF Bundling for best performance */ 154 *fw_prot_opts = 0; 155 156 /* Translate SCSI opcode to a protection opcode */ 157 switch (scsi_get_prot_op(cmd)) { 158 case SCSI_PROT_READ_STRIP: 159 *fw_prot_opts |= PO_MODE_DIF_REMOVE; 160 break; 161 case SCSI_PROT_WRITE_INSERT: 162 *fw_prot_opts |= PO_MODE_DIF_INSERT; 163 break; 164 case SCSI_PROT_READ_INSERT: 165 *fw_prot_opts |= PO_MODE_DIF_INSERT; 166 break; 167 case SCSI_PROT_WRITE_STRIP: 168 *fw_prot_opts |= PO_MODE_DIF_REMOVE; 169 break; 170 case SCSI_PROT_READ_PASS: 171 case SCSI_PROT_WRITE_PASS: 172 if (guard & SHOST_DIX_GUARD_IP) 173 *fw_prot_opts |= PO_MODE_DIF_TCP_CKSUM; 174 else 175 *fw_prot_opts |= PO_MODE_DIF_PASS; 176 break; 177 default: /* Normal Request */ 178 *fw_prot_opts |= PO_MODE_DIF_PASS; 179 break; 180 } 181 182 return scsi_prot_sg_count(cmd); 183 } 184 185 /* 186 * qla2x00_build_scsi_iocbs_32() - Build IOCB command utilizing 32bit 187 * capable IOCB types. 188 * 189 * @sp: SRB command to process 190 * @cmd_pkt: Command type 2 IOCB 191 * @tot_dsds: Total number of segments to transfer 192 */ 193 void qla2x00_build_scsi_iocbs_32(srb_t *sp, cmd_entry_t *cmd_pkt, 194 uint16_t tot_dsds) 195 { 196 uint16_t avail_dsds; 197 uint32_t *cur_dsd; 198 scsi_qla_host_t *vha; 199 struct scsi_cmnd *cmd; 200 struct scatterlist *sg; 201 int i; 202 203 cmd = GET_CMD_SP(sp); 204 205 /* Update entry type to indicate Command Type 2 IOCB */ 206 *((uint32_t *)(&cmd_pkt->entry_type)) = 207 __constant_cpu_to_le32(COMMAND_TYPE); 208 209 /* No data transfer */ 210 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) { 211 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 212 return; 213 } 214 215 vha = sp->fcport->vha; 216 cmd_pkt->control_flags |= cpu_to_le16(qla2x00_get_cmd_direction(sp)); 217 218 /* Three DSDs are available in the Command Type 2 IOCB */ 219 avail_dsds = 3; 220 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address; 221 222 /* Load data segments */ 223 scsi_for_each_sg(cmd, sg, tot_dsds, i) { 224 cont_entry_t *cont_pkt; 225 226 /* Allocate additional continuation packets? */ 227 if (avail_dsds == 0) { 228 /* 229 * Seven DSDs are available in the Continuation 230 * Type 0 IOCB. 231 */ 232 cont_pkt = qla2x00_prep_cont_type0_iocb(vha); 233 cur_dsd = (uint32_t *)&cont_pkt->dseg_0_address; 234 avail_dsds = 7; 235 } 236 237 *cur_dsd++ = cpu_to_le32(sg_dma_address(sg)); 238 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 239 avail_dsds--; 240 } 241 } 242 243 /** 244 * qla2x00_build_scsi_iocbs_64() - Build IOCB command utilizing 64bit 245 * capable IOCB types. 246 * 247 * @sp: SRB command to process 248 * @cmd_pkt: Command type 3 IOCB 249 * @tot_dsds: Total number of segments to transfer 250 */ 251 void qla2x00_build_scsi_iocbs_64(srb_t *sp, cmd_entry_t *cmd_pkt, 252 uint16_t tot_dsds) 253 { 254 uint16_t avail_dsds; 255 uint32_t *cur_dsd; 256 scsi_qla_host_t *vha; 257 struct scsi_cmnd *cmd; 258 struct scatterlist *sg; 259 int i; 260 261 cmd = GET_CMD_SP(sp); 262 263 /* Update entry type to indicate Command Type 3 IOCB */ 264 *((uint32_t *)(&cmd_pkt->entry_type)) = 265 __constant_cpu_to_le32(COMMAND_A64_TYPE); 266 267 /* No data transfer */ 268 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) { 269 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 270 return; 271 } 272 273 vha = sp->fcport->vha; 274 cmd_pkt->control_flags |= cpu_to_le16(qla2x00_get_cmd_direction(sp)); 275 276 /* Two DSDs are available in the Command Type 3 IOCB */ 277 avail_dsds = 2; 278 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address; 279 280 /* Load data segments */ 281 scsi_for_each_sg(cmd, sg, tot_dsds, i) { 282 dma_addr_t sle_dma; 283 cont_a64_entry_t *cont_pkt; 284 285 /* Allocate additional continuation packets? */ 286 if (avail_dsds == 0) { 287 /* 288 * Five DSDs are available in the Continuation 289 * Type 1 IOCB. 290 */ 291 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req); 292 cur_dsd = (uint32_t *)cont_pkt->dseg_0_address; 293 avail_dsds = 5; 294 } 295 296 sle_dma = sg_dma_address(sg); 297 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 298 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 299 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 300 avail_dsds--; 301 } 302 } 303 304 /** 305 * qla2x00_start_scsi() - Send a SCSI command to the ISP 306 * @sp: command to send to the ISP 307 * 308 * Returns non-zero if a failure occurred, else zero. 309 */ 310 int 311 qla2x00_start_scsi(srb_t *sp) 312 { 313 int ret, nseg; 314 unsigned long flags; 315 scsi_qla_host_t *vha; 316 struct scsi_cmnd *cmd; 317 uint32_t *clr_ptr; 318 uint32_t index; 319 uint32_t handle; 320 cmd_entry_t *cmd_pkt; 321 uint16_t cnt; 322 uint16_t req_cnt; 323 uint16_t tot_dsds; 324 struct device_reg_2xxx __iomem *reg; 325 struct qla_hw_data *ha; 326 struct req_que *req; 327 struct rsp_que *rsp; 328 char tag[2]; 329 330 /* Setup device pointers. */ 331 ret = 0; 332 vha = sp->fcport->vha; 333 ha = vha->hw; 334 reg = &ha->iobase->isp; 335 cmd = GET_CMD_SP(sp); 336 req = ha->req_q_map[0]; 337 rsp = ha->rsp_q_map[0]; 338 /* So we know we haven't pci_map'ed anything yet */ 339 tot_dsds = 0; 340 341 /* Send marker if required */ 342 if (vha->marker_needed != 0) { 343 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) != 344 QLA_SUCCESS) { 345 return (QLA_FUNCTION_FAILED); 346 } 347 vha->marker_needed = 0; 348 } 349 350 /* Acquire ring specific lock */ 351 spin_lock_irqsave(&ha->hardware_lock, flags); 352 353 /* Check for room in outstanding command list. */ 354 handle = req->current_outstanding_cmd; 355 for (index = 1; index < req->num_outstanding_cmds; index++) { 356 handle++; 357 if (handle == req->num_outstanding_cmds) 358 handle = 1; 359 if (!req->outstanding_cmds[handle]) 360 break; 361 } 362 if (index == req->num_outstanding_cmds) 363 goto queuing_error; 364 365 /* Map the sg table so we have an accurate count of sg entries needed */ 366 if (scsi_sg_count(cmd)) { 367 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd), 368 scsi_sg_count(cmd), cmd->sc_data_direction); 369 if (unlikely(!nseg)) 370 goto queuing_error; 371 } else 372 nseg = 0; 373 374 tot_dsds = nseg; 375 376 /* Calculate the number of request entries needed. */ 377 req_cnt = ha->isp_ops->calc_req_entries(tot_dsds); 378 if (req->cnt < (req_cnt + 2)) { 379 cnt = RD_REG_WORD_RELAXED(ISP_REQ_Q_OUT(ha, reg)); 380 if (req->ring_index < cnt) 381 req->cnt = cnt - req->ring_index; 382 else 383 req->cnt = req->length - 384 (req->ring_index - cnt); 385 /* If still no head room then bail out */ 386 if (req->cnt < (req_cnt + 2)) 387 goto queuing_error; 388 } 389 390 /* Build command packet */ 391 req->current_outstanding_cmd = handle; 392 req->outstanding_cmds[handle] = sp; 393 sp->handle = handle; 394 cmd->host_scribble = (unsigned char *)(unsigned long)handle; 395 req->cnt -= req_cnt; 396 397 cmd_pkt = (cmd_entry_t *)req->ring_ptr; 398 cmd_pkt->handle = handle; 399 /* Zero out remaining portion of packet. */ 400 clr_ptr = (uint32_t *)cmd_pkt + 2; 401 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 402 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 403 404 /* Set target ID and LUN number*/ 405 SET_TARGET_ID(ha, cmd_pkt->target, sp->fcport->loop_id); 406 cmd_pkt->lun = cpu_to_le16(cmd->device->lun); 407 408 /* Update tagged queuing modifier */ 409 if (scsi_populate_tag_msg(cmd, tag)) { 410 switch (tag[0]) { 411 case HEAD_OF_QUEUE_TAG: 412 cmd_pkt->control_flags = 413 __constant_cpu_to_le16(CF_HEAD_TAG); 414 break; 415 case ORDERED_QUEUE_TAG: 416 cmd_pkt->control_flags = 417 __constant_cpu_to_le16(CF_ORDERED_TAG); 418 break; 419 default: 420 cmd_pkt->control_flags = 421 __constant_cpu_to_le16(CF_SIMPLE_TAG); 422 break; 423 } 424 } else { 425 cmd_pkt->control_flags = __constant_cpu_to_le16(CF_SIMPLE_TAG); 426 } 427 428 /* Load SCSI command packet. */ 429 memcpy(cmd_pkt->scsi_cdb, cmd->cmnd, cmd->cmd_len); 430 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); 431 432 /* Build IOCB segments */ 433 ha->isp_ops->build_iocbs(sp, cmd_pkt, tot_dsds); 434 435 /* Set total data segment count. */ 436 cmd_pkt->entry_count = (uint8_t)req_cnt; 437 wmb(); 438 439 /* Adjust ring index. */ 440 req->ring_index++; 441 if (req->ring_index == req->length) { 442 req->ring_index = 0; 443 req->ring_ptr = req->ring; 444 } else 445 req->ring_ptr++; 446 447 sp->flags |= SRB_DMA_VALID; 448 449 /* Set chip new ring index. */ 450 WRT_REG_WORD(ISP_REQ_Q_IN(ha, reg), req->ring_index); 451 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, reg)); /* PCI Posting. */ 452 453 /* Manage unprocessed RIO/ZIO commands in response queue. */ 454 if (vha->flags.process_response_queue && 455 rsp->ring_ptr->signature != RESPONSE_PROCESSED) 456 qla2x00_process_response_queue(rsp); 457 458 spin_unlock_irqrestore(&ha->hardware_lock, flags); 459 return (QLA_SUCCESS); 460 461 queuing_error: 462 if (tot_dsds) 463 scsi_dma_unmap(cmd); 464 465 spin_unlock_irqrestore(&ha->hardware_lock, flags); 466 467 return (QLA_FUNCTION_FAILED); 468 } 469 470 /** 471 * qla2x00_start_iocbs() - Execute the IOCB command 472 */ 473 void 474 qla2x00_start_iocbs(struct scsi_qla_host *vha, struct req_que *req) 475 { 476 struct qla_hw_data *ha = vha->hw; 477 device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id); 478 479 if (IS_P3P_TYPE(ha)) { 480 qla82xx_start_iocbs(vha); 481 } else { 482 /* Adjust ring index. */ 483 req->ring_index++; 484 if (req->ring_index == req->length) { 485 req->ring_index = 0; 486 req->ring_ptr = req->ring; 487 } else 488 req->ring_ptr++; 489 490 /* Set chip new ring index. */ 491 if (ha->mqenable || IS_QLA83XX(ha)) { 492 WRT_REG_DWORD(req->req_q_in, req->ring_index); 493 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr); 494 } else if (IS_QLAFX00(ha)) { 495 WRT_REG_DWORD(®->ispfx00.req_q_in, req->ring_index); 496 RD_REG_DWORD_RELAXED(®->ispfx00.req_q_in); 497 QLAFX00_SET_HST_INTR(ha, ha->rqstq_intr_code); 498 } else if (IS_FWI2_CAPABLE(ha)) { 499 WRT_REG_DWORD(®->isp24.req_q_in, req->ring_index); 500 RD_REG_DWORD_RELAXED(®->isp24.req_q_in); 501 } else { 502 WRT_REG_WORD(ISP_REQ_Q_IN(ha, ®->isp), 503 req->ring_index); 504 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, ®->isp)); 505 } 506 } 507 } 508 509 /** 510 * qla2x00_marker() - Send a marker IOCB to the firmware. 511 * @ha: HA context 512 * @loop_id: loop ID 513 * @lun: LUN 514 * @type: marker modifier 515 * 516 * Can be called from both normal and interrupt context. 517 * 518 * Returns non-zero if a failure occurred, else zero. 519 */ 520 static int 521 __qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req, 522 struct rsp_que *rsp, uint16_t loop_id, 523 uint16_t lun, uint8_t type) 524 { 525 mrk_entry_t *mrk; 526 struct mrk_entry_24xx *mrk24 = NULL; 527 struct mrk_entry_fx00 *mrkfx = NULL; 528 529 struct qla_hw_data *ha = vha->hw; 530 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 531 532 req = ha->req_q_map[0]; 533 mrk = (mrk_entry_t *)qla2x00_alloc_iocbs(vha, NULL); 534 if (mrk == NULL) { 535 ql_log(ql_log_warn, base_vha, 0x3026, 536 "Failed to allocate Marker IOCB.\n"); 537 538 return (QLA_FUNCTION_FAILED); 539 } 540 541 mrk->entry_type = MARKER_TYPE; 542 mrk->modifier = type; 543 if (type != MK_SYNC_ALL) { 544 if (IS_QLAFX00(ha)) { 545 mrkfx = (struct mrk_entry_fx00 *) mrk; 546 mrkfx->handle = MAKE_HANDLE(req->id, mrkfx->handle); 547 mrkfx->handle_hi = 0; 548 mrkfx->tgt_id = cpu_to_le16(loop_id); 549 mrkfx->lun[1] = LSB(lun); 550 mrkfx->lun[2] = MSB(lun); 551 host_to_fcp_swap(mrkfx->lun, sizeof(mrkfx->lun)); 552 } else if (IS_FWI2_CAPABLE(ha)) { 553 mrk24 = (struct mrk_entry_24xx *) mrk; 554 mrk24->nport_handle = cpu_to_le16(loop_id); 555 mrk24->lun[1] = LSB(lun); 556 mrk24->lun[2] = MSB(lun); 557 host_to_fcp_swap(mrk24->lun, sizeof(mrk24->lun)); 558 mrk24->vp_index = vha->vp_idx; 559 mrk24->handle = MAKE_HANDLE(req->id, mrk24->handle); 560 } else { 561 SET_TARGET_ID(ha, mrk->target, loop_id); 562 mrk->lun = cpu_to_le16(lun); 563 } 564 } 565 wmb(); 566 567 qla2x00_start_iocbs(vha, req); 568 569 return (QLA_SUCCESS); 570 } 571 572 int 573 qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req, 574 struct rsp_que *rsp, uint16_t loop_id, uint16_t lun, 575 uint8_t type) 576 { 577 int ret; 578 unsigned long flags = 0; 579 580 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 581 ret = __qla2x00_marker(vha, req, rsp, loop_id, lun, type); 582 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 583 584 return (ret); 585 } 586 587 /* 588 * qla2x00_issue_marker 589 * 590 * Issue marker 591 * Caller CAN have hardware lock held as specified by ha_locked parameter. 592 * Might release it, then reaquire. 593 */ 594 int qla2x00_issue_marker(scsi_qla_host_t *vha, int ha_locked) 595 { 596 if (ha_locked) { 597 if (__qla2x00_marker(vha, vha->req, vha->req->rsp, 0, 0, 598 MK_SYNC_ALL) != QLA_SUCCESS) 599 return QLA_FUNCTION_FAILED; 600 } else { 601 if (qla2x00_marker(vha, vha->req, vha->req->rsp, 0, 0, 602 MK_SYNC_ALL) != QLA_SUCCESS) 603 return QLA_FUNCTION_FAILED; 604 } 605 vha->marker_needed = 0; 606 607 return QLA_SUCCESS; 608 } 609 610 static inline int 611 qla24xx_build_scsi_type_6_iocbs(srb_t *sp, struct cmd_type_6 *cmd_pkt, 612 uint16_t tot_dsds) 613 { 614 uint32_t *cur_dsd = NULL; 615 scsi_qla_host_t *vha; 616 struct qla_hw_data *ha; 617 struct scsi_cmnd *cmd; 618 struct scatterlist *cur_seg; 619 uint32_t *dsd_seg; 620 void *next_dsd; 621 uint8_t avail_dsds; 622 uint8_t first_iocb = 1; 623 uint32_t dsd_list_len; 624 struct dsd_dma *dsd_ptr; 625 struct ct6_dsd *ctx; 626 627 cmd = GET_CMD_SP(sp); 628 629 /* Update entry type to indicate Command Type 3 IOCB */ 630 *((uint32_t *)(&cmd_pkt->entry_type)) = 631 __constant_cpu_to_le32(COMMAND_TYPE_6); 632 633 /* No data transfer */ 634 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) { 635 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 636 return 0; 637 } 638 639 vha = sp->fcport->vha; 640 ha = vha->hw; 641 642 /* Set transfer direction */ 643 if (cmd->sc_data_direction == DMA_TO_DEVICE) { 644 cmd_pkt->control_flags = 645 __constant_cpu_to_le16(CF_WRITE_DATA); 646 vha->qla_stats.output_bytes += scsi_bufflen(cmd); 647 vha->qla_stats.output_requests++; 648 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) { 649 cmd_pkt->control_flags = 650 __constant_cpu_to_le16(CF_READ_DATA); 651 vha->qla_stats.input_bytes += scsi_bufflen(cmd); 652 vha->qla_stats.input_requests++; 653 } 654 655 cur_seg = scsi_sglist(cmd); 656 ctx = GET_CMD_CTX_SP(sp); 657 658 while (tot_dsds) { 659 avail_dsds = (tot_dsds > QLA_DSDS_PER_IOCB) ? 660 QLA_DSDS_PER_IOCB : tot_dsds; 661 tot_dsds -= avail_dsds; 662 dsd_list_len = (avail_dsds + 1) * QLA_DSD_SIZE; 663 664 dsd_ptr = list_first_entry(&ha->gbl_dsd_list, 665 struct dsd_dma, list); 666 next_dsd = dsd_ptr->dsd_addr; 667 list_del(&dsd_ptr->list); 668 ha->gbl_dsd_avail--; 669 list_add_tail(&dsd_ptr->list, &ctx->dsd_list); 670 ctx->dsd_use_cnt++; 671 ha->gbl_dsd_inuse++; 672 673 if (first_iocb) { 674 first_iocb = 0; 675 dsd_seg = (uint32_t *)&cmd_pkt->fcp_data_dseg_address; 676 *dsd_seg++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 677 *dsd_seg++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 678 cmd_pkt->fcp_data_dseg_len = cpu_to_le32(dsd_list_len); 679 } else { 680 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 681 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 682 *cur_dsd++ = cpu_to_le32(dsd_list_len); 683 } 684 cur_dsd = (uint32_t *)next_dsd; 685 while (avail_dsds) { 686 dma_addr_t sle_dma; 687 688 sle_dma = sg_dma_address(cur_seg); 689 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 690 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 691 *cur_dsd++ = cpu_to_le32(sg_dma_len(cur_seg)); 692 cur_seg = sg_next(cur_seg); 693 avail_dsds--; 694 } 695 } 696 697 /* Null termination */ 698 *cur_dsd++ = 0; 699 *cur_dsd++ = 0; 700 *cur_dsd++ = 0; 701 cmd_pkt->control_flags |= CF_DATA_SEG_DESCR_ENABLE; 702 return 0; 703 } 704 705 /* 706 * qla24xx_calc_dsd_lists() - Determine number of DSD list required 707 * for Command Type 6. 708 * 709 * @dsds: number of data segment decriptors needed 710 * 711 * Returns the number of dsd list needed to store @dsds. 712 */ 713 inline uint16_t 714 qla24xx_calc_dsd_lists(uint16_t dsds) 715 { 716 uint16_t dsd_lists = 0; 717 718 dsd_lists = (dsds/QLA_DSDS_PER_IOCB); 719 if (dsds % QLA_DSDS_PER_IOCB) 720 dsd_lists++; 721 return dsd_lists; 722 } 723 724 725 /** 726 * qla24xx_build_scsi_iocbs() - Build IOCB command utilizing Command Type 7 727 * IOCB types. 728 * 729 * @sp: SRB command to process 730 * @cmd_pkt: Command type 3 IOCB 731 * @tot_dsds: Total number of segments to transfer 732 */ 733 inline void 734 qla24xx_build_scsi_iocbs(srb_t *sp, struct cmd_type_7 *cmd_pkt, 735 uint16_t tot_dsds) 736 { 737 uint16_t avail_dsds; 738 uint32_t *cur_dsd; 739 scsi_qla_host_t *vha; 740 struct scsi_cmnd *cmd; 741 struct scatterlist *sg; 742 int i; 743 struct req_que *req; 744 745 cmd = GET_CMD_SP(sp); 746 747 /* Update entry type to indicate Command Type 3 IOCB */ 748 *((uint32_t *)(&cmd_pkt->entry_type)) = 749 __constant_cpu_to_le32(COMMAND_TYPE_7); 750 751 /* No data transfer */ 752 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) { 753 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 754 return; 755 } 756 757 vha = sp->fcport->vha; 758 req = vha->req; 759 760 /* Set transfer direction */ 761 if (cmd->sc_data_direction == DMA_TO_DEVICE) { 762 cmd_pkt->task_mgmt_flags = 763 __constant_cpu_to_le16(TMF_WRITE_DATA); 764 vha->qla_stats.output_bytes += scsi_bufflen(cmd); 765 vha->qla_stats.output_requests++; 766 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) { 767 cmd_pkt->task_mgmt_flags = 768 __constant_cpu_to_le16(TMF_READ_DATA); 769 vha->qla_stats.input_bytes += scsi_bufflen(cmd); 770 vha->qla_stats.input_requests++; 771 } 772 773 /* One DSD is available in the Command Type 3 IOCB */ 774 avail_dsds = 1; 775 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address; 776 777 /* Load data segments */ 778 779 scsi_for_each_sg(cmd, sg, tot_dsds, i) { 780 dma_addr_t sle_dma; 781 cont_a64_entry_t *cont_pkt; 782 783 /* Allocate additional continuation packets? */ 784 if (avail_dsds == 0) { 785 /* 786 * Five DSDs are available in the Continuation 787 * Type 1 IOCB. 788 */ 789 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req); 790 cur_dsd = (uint32_t *)cont_pkt->dseg_0_address; 791 avail_dsds = 5; 792 } 793 794 sle_dma = sg_dma_address(sg); 795 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 796 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 797 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 798 avail_dsds--; 799 } 800 } 801 802 struct fw_dif_context { 803 uint32_t ref_tag; 804 uint16_t app_tag; 805 uint8_t ref_tag_mask[4]; /* Validation/Replacement Mask*/ 806 uint8_t app_tag_mask[2]; /* Validation/Replacement Mask*/ 807 }; 808 809 /* 810 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command 811 * 812 */ 813 static inline void 814 qla24xx_set_t10dif_tags(srb_t *sp, struct fw_dif_context *pkt, 815 unsigned int protcnt) 816 { 817 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 818 819 switch (scsi_get_prot_type(cmd)) { 820 case SCSI_PROT_DIF_TYPE0: 821 /* 822 * No check for ql2xenablehba_err_chk, as it would be an 823 * I/O error if hba tag generation is not done. 824 */ 825 pkt->ref_tag = cpu_to_le32((uint32_t) 826 (0xffffffff & scsi_get_lba(cmd))); 827 828 if (!qla2x00_hba_err_chk_enabled(sp)) 829 break; 830 831 pkt->ref_tag_mask[0] = 0xff; 832 pkt->ref_tag_mask[1] = 0xff; 833 pkt->ref_tag_mask[2] = 0xff; 834 pkt->ref_tag_mask[3] = 0xff; 835 break; 836 837 /* 838 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to 839 * match LBA in CDB + N 840 */ 841 case SCSI_PROT_DIF_TYPE2: 842 pkt->app_tag = __constant_cpu_to_le16(0); 843 pkt->app_tag_mask[0] = 0x0; 844 pkt->app_tag_mask[1] = 0x0; 845 846 pkt->ref_tag = cpu_to_le32((uint32_t) 847 (0xffffffff & scsi_get_lba(cmd))); 848 849 if (!qla2x00_hba_err_chk_enabled(sp)) 850 break; 851 852 /* enable ALL bytes of the ref tag */ 853 pkt->ref_tag_mask[0] = 0xff; 854 pkt->ref_tag_mask[1] = 0xff; 855 pkt->ref_tag_mask[2] = 0xff; 856 pkt->ref_tag_mask[3] = 0xff; 857 break; 858 859 /* For Type 3 protection: 16 bit GUARD only */ 860 case SCSI_PROT_DIF_TYPE3: 861 pkt->ref_tag_mask[0] = pkt->ref_tag_mask[1] = 862 pkt->ref_tag_mask[2] = pkt->ref_tag_mask[3] = 863 0x00; 864 break; 865 866 /* 867 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and 868 * 16 bit app tag. 869 */ 870 case SCSI_PROT_DIF_TYPE1: 871 pkt->ref_tag = cpu_to_le32((uint32_t) 872 (0xffffffff & scsi_get_lba(cmd))); 873 pkt->app_tag = __constant_cpu_to_le16(0); 874 pkt->app_tag_mask[0] = 0x0; 875 pkt->app_tag_mask[1] = 0x0; 876 877 if (!qla2x00_hba_err_chk_enabled(sp)) 878 break; 879 880 /* enable ALL bytes of the ref tag */ 881 pkt->ref_tag_mask[0] = 0xff; 882 pkt->ref_tag_mask[1] = 0xff; 883 pkt->ref_tag_mask[2] = 0xff; 884 pkt->ref_tag_mask[3] = 0xff; 885 break; 886 } 887 } 888 889 struct qla2_sgx { 890 dma_addr_t dma_addr; /* OUT */ 891 uint32_t dma_len; /* OUT */ 892 893 uint32_t tot_bytes; /* IN */ 894 struct scatterlist *cur_sg; /* IN */ 895 896 /* for book keeping, bzero on initial invocation */ 897 uint32_t bytes_consumed; 898 uint32_t num_bytes; 899 uint32_t tot_partial; 900 901 /* for debugging */ 902 uint32_t num_sg; 903 srb_t *sp; 904 }; 905 906 static int 907 qla24xx_get_one_block_sg(uint32_t blk_sz, struct qla2_sgx *sgx, 908 uint32_t *partial) 909 { 910 struct scatterlist *sg; 911 uint32_t cumulative_partial, sg_len; 912 dma_addr_t sg_dma_addr; 913 914 if (sgx->num_bytes == sgx->tot_bytes) 915 return 0; 916 917 sg = sgx->cur_sg; 918 cumulative_partial = sgx->tot_partial; 919 920 sg_dma_addr = sg_dma_address(sg); 921 sg_len = sg_dma_len(sg); 922 923 sgx->dma_addr = sg_dma_addr + sgx->bytes_consumed; 924 925 if ((cumulative_partial + (sg_len - sgx->bytes_consumed)) >= blk_sz) { 926 sgx->dma_len = (blk_sz - cumulative_partial); 927 sgx->tot_partial = 0; 928 sgx->num_bytes += blk_sz; 929 *partial = 0; 930 } else { 931 sgx->dma_len = sg_len - sgx->bytes_consumed; 932 sgx->tot_partial += sgx->dma_len; 933 *partial = 1; 934 } 935 936 sgx->bytes_consumed += sgx->dma_len; 937 938 if (sg_len == sgx->bytes_consumed) { 939 sg = sg_next(sg); 940 sgx->num_sg++; 941 sgx->cur_sg = sg; 942 sgx->bytes_consumed = 0; 943 } 944 945 return 1; 946 } 947 948 static int 949 qla24xx_walk_and_build_sglist_no_difb(struct qla_hw_data *ha, srb_t *sp, 950 uint32_t *dsd, uint16_t tot_dsds) 951 { 952 void *next_dsd; 953 uint8_t avail_dsds = 0; 954 uint32_t dsd_list_len; 955 struct dsd_dma *dsd_ptr; 956 struct scatterlist *sg_prot; 957 uint32_t *cur_dsd = dsd; 958 uint16_t used_dsds = tot_dsds; 959 960 uint32_t prot_int; 961 uint32_t partial; 962 struct qla2_sgx sgx; 963 dma_addr_t sle_dma; 964 uint32_t sle_dma_len, tot_prot_dma_len = 0; 965 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 966 967 prot_int = cmd->device->sector_size; 968 969 memset(&sgx, 0, sizeof(struct qla2_sgx)); 970 sgx.tot_bytes = scsi_bufflen(cmd); 971 sgx.cur_sg = scsi_sglist(cmd); 972 sgx.sp = sp; 973 974 sg_prot = scsi_prot_sglist(cmd); 975 976 while (qla24xx_get_one_block_sg(prot_int, &sgx, &partial)) { 977 978 sle_dma = sgx.dma_addr; 979 sle_dma_len = sgx.dma_len; 980 alloc_and_fill: 981 /* Allocate additional continuation packets? */ 982 if (avail_dsds == 0) { 983 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ? 984 QLA_DSDS_PER_IOCB : used_dsds; 985 dsd_list_len = (avail_dsds + 1) * 12; 986 used_dsds -= avail_dsds; 987 988 /* allocate tracking DS */ 989 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC); 990 if (!dsd_ptr) 991 return 1; 992 993 /* allocate new list */ 994 dsd_ptr->dsd_addr = next_dsd = 995 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, 996 &dsd_ptr->dsd_list_dma); 997 998 if (!next_dsd) { 999 /* 1000 * Need to cleanup only this dsd_ptr, rest 1001 * will be done by sp_free_dma() 1002 */ 1003 kfree(dsd_ptr); 1004 return 1; 1005 } 1006 1007 list_add_tail(&dsd_ptr->list, 1008 &((struct crc_context *)sp->u.scmd.ctx)->dsd_list); 1009 1010 sp->flags |= SRB_CRC_CTX_DSD_VALID; 1011 1012 /* add new list to cmd iocb or last list */ 1013 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 1014 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 1015 *cur_dsd++ = dsd_list_len; 1016 cur_dsd = (uint32_t *)next_dsd; 1017 } 1018 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 1019 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 1020 *cur_dsd++ = cpu_to_le32(sle_dma_len); 1021 avail_dsds--; 1022 1023 if (partial == 0) { 1024 /* Got a full protection interval */ 1025 sle_dma = sg_dma_address(sg_prot) + tot_prot_dma_len; 1026 sle_dma_len = 8; 1027 1028 tot_prot_dma_len += sle_dma_len; 1029 if (tot_prot_dma_len == sg_dma_len(sg_prot)) { 1030 tot_prot_dma_len = 0; 1031 sg_prot = sg_next(sg_prot); 1032 } 1033 1034 partial = 1; /* So as to not re-enter this block */ 1035 goto alloc_and_fill; 1036 } 1037 } 1038 /* Null termination */ 1039 *cur_dsd++ = 0; 1040 *cur_dsd++ = 0; 1041 *cur_dsd++ = 0; 1042 return 0; 1043 } 1044 1045 static int 1046 qla24xx_walk_and_build_sglist(struct qla_hw_data *ha, srb_t *sp, uint32_t *dsd, 1047 uint16_t tot_dsds) 1048 { 1049 void *next_dsd; 1050 uint8_t avail_dsds = 0; 1051 uint32_t dsd_list_len; 1052 struct dsd_dma *dsd_ptr; 1053 struct scatterlist *sg; 1054 uint32_t *cur_dsd = dsd; 1055 int i; 1056 uint16_t used_dsds = tot_dsds; 1057 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 1058 1059 scsi_for_each_sg(cmd, sg, tot_dsds, i) { 1060 dma_addr_t sle_dma; 1061 1062 /* Allocate additional continuation packets? */ 1063 if (avail_dsds == 0) { 1064 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ? 1065 QLA_DSDS_PER_IOCB : used_dsds; 1066 dsd_list_len = (avail_dsds + 1) * 12; 1067 used_dsds -= avail_dsds; 1068 1069 /* allocate tracking DS */ 1070 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC); 1071 if (!dsd_ptr) 1072 return 1; 1073 1074 /* allocate new list */ 1075 dsd_ptr->dsd_addr = next_dsd = 1076 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, 1077 &dsd_ptr->dsd_list_dma); 1078 1079 if (!next_dsd) { 1080 /* 1081 * Need to cleanup only this dsd_ptr, rest 1082 * will be done by sp_free_dma() 1083 */ 1084 kfree(dsd_ptr); 1085 return 1; 1086 } 1087 1088 list_add_tail(&dsd_ptr->list, 1089 &((struct crc_context *)sp->u.scmd.ctx)->dsd_list); 1090 1091 sp->flags |= SRB_CRC_CTX_DSD_VALID; 1092 1093 /* add new list to cmd iocb or last list */ 1094 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 1095 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 1096 *cur_dsd++ = dsd_list_len; 1097 cur_dsd = (uint32_t *)next_dsd; 1098 } 1099 sle_dma = sg_dma_address(sg); 1100 1101 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 1102 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 1103 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 1104 avail_dsds--; 1105 1106 } 1107 /* Null termination */ 1108 *cur_dsd++ = 0; 1109 *cur_dsd++ = 0; 1110 *cur_dsd++ = 0; 1111 return 0; 1112 } 1113 1114 static int 1115 qla24xx_walk_and_build_prot_sglist(struct qla_hw_data *ha, srb_t *sp, 1116 uint32_t *dsd, 1117 uint16_t tot_dsds) 1118 { 1119 void *next_dsd; 1120 uint8_t avail_dsds = 0; 1121 uint32_t dsd_list_len; 1122 struct dsd_dma *dsd_ptr; 1123 struct scatterlist *sg; 1124 int i; 1125 struct scsi_cmnd *cmd; 1126 uint32_t *cur_dsd = dsd; 1127 uint16_t used_dsds = tot_dsds; 1128 1129 cmd = GET_CMD_SP(sp); 1130 scsi_for_each_prot_sg(cmd, sg, tot_dsds, i) { 1131 dma_addr_t sle_dma; 1132 1133 /* Allocate additional continuation packets? */ 1134 if (avail_dsds == 0) { 1135 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ? 1136 QLA_DSDS_PER_IOCB : used_dsds; 1137 dsd_list_len = (avail_dsds + 1) * 12; 1138 used_dsds -= avail_dsds; 1139 1140 /* allocate tracking DS */ 1141 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC); 1142 if (!dsd_ptr) 1143 return 1; 1144 1145 /* allocate new list */ 1146 dsd_ptr->dsd_addr = next_dsd = 1147 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, 1148 &dsd_ptr->dsd_list_dma); 1149 1150 if (!next_dsd) { 1151 /* 1152 * Need to cleanup only this dsd_ptr, rest 1153 * will be done by sp_free_dma() 1154 */ 1155 kfree(dsd_ptr); 1156 return 1; 1157 } 1158 1159 list_add_tail(&dsd_ptr->list, 1160 &((struct crc_context *)sp->u.scmd.ctx)->dsd_list); 1161 1162 sp->flags |= SRB_CRC_CTX_DSD_VALID; 1163 1164 /* add new list to cmd iocb or last list */ 1165 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 1166 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 1167 *cur_dsd++ = dsd_list_len; 1168 cur_dsd = (uint32_t *)next_dsd; 1169 } 1170 sle_dma = sg_dma_address(sg); 1171 1172 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 1173 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 1174 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 1175 1176 avail_dsds--; 1177 } 1178 /* Null termination */ 1179 *cur_dsd++ = 0; 1180 *cur_dsd++ = 0; 1181 *cur_dsd++ = 0; 1182 return 0; 1183 } 1184 1185 /** 1186 * qla24xx_build_scsi_crc_2_iocbs() - Build IOCB command utilizing Command 1187 * Type 6 IOCB types. 1188 * 1189 * @sp: SRB command to process 1190 * @cmd_pkt: Command type 3 IOCB 1191 * @tot_dsds: Total number of segments to transfer 1192 */ 1193 static inline int 1194 qla24xx_build_scsi_crc_2_iocbs(srb_t *sp, struct cmd_type_crc_2 *cmd_pkt, 1195 uint16_t tot_dsds, uint16_t tot_prot_dsds, uint16_t fw_prot_opts) 1196 { 1197 uint32_t *cur_dsd, *fcp_dl; 1198 scsi_qla_host_t *vha; 1199 struct scsi_cmnd *cmd; 1200 int sgc; 1201 uint32_t total_bytes = 0; 1202 uint32_t data_bytes; 1203 uint32_t dif_bytes; 1204 uint8_t bundling = 1; 1205 uint16_t blk_size; 1206 uint8_t *clr_ptr; 1207 struct crc_context *crc_ctx_pkt = NULL; 1208 struct qla_hw_data *ha; 1209 uint8_t additional_fcpcdb_len; 1210 uint16_t fcp_cmnd_len; 1211 struct fcp_cmnd *fcp_cmnd; 1212 dma_addr_t crc_ctx_dma; 1213 char tag[2]; 1214 1215 cmd = GET_CMD_SP(sp); 1216 1217 sgc = 0; 1218 /* Update entry type to indicate Command Type CRC_2 IOCB */ 1219 *((uint32_t *)(&cmd_pkt->entry_type)) = 1220 __constant_cpu_to_le32(COMMAND_TYPE_CRC_2); 1221 1222 vha = sp->fcport->vha; 1223 ha = vha->hw; 1224 1225 /* No data transfer */ 1226 data_bytes = scsi_bufflen(cmd); 1227 if (!data_bytes || cmd->sc_data_direction == DMA_NONE) { 1228 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 1229 return QLA_SUCCESS; 1230 } 1231 1232 cmd_pkt->vp_index = sp->fcport->vha->vp_idx; 1233 1234 /* Set transfer direction */ 1235 if (cmd->sc_data_direction == DMA_TO_DEVICE) { 1236 cmd_pkt->control_flags = 1237 __constant_cpu_to_le16(CF_WRITE_DATA); 1238 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) { 1239 cmd_pkt->control_flags = 1240 __constant_cpu_to_le16(CF_READ_DATA); 1241 } 1242 1243 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) || 1244 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP) || 1245 (scsi_get_prot_op(cmd) == SCSI_PROT_READ_STRIP) || 1246 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_INSERT)) 1247 bundling = 0; 1248 1249 /* Allocate CRC context from global pool */ 1250 crc_ctx_pkt = sp->u.scmd.ctx = 1251 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 1252 1253 if (!crc_ctx_pkt) 1254 goto crc_queuing_error; 1255 1256 /* Zero out CTX area. */ 1257 clr_ptr = (uint8_t *)crc_ctx_pkt; 1258 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt)); 1259 1260 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 1261 1262 sp->flags |= SRB_CRC_CTX_DMA_VALID; 1263 1264 /* Set handle */ 1265 crc_ctx_pkt->handle = cmd_pkt->handle; 1266 1267 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 1268 1269 qla24xx_set_t10dif_tags(sp, (struct fw_dif_context *) 1270 &crc_ctx_pkt->ref_tag, tot_prot_dsds); 1271 1272 cmd_pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma)); 1273 cmd_pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma)); 1274 cmd_pkt->crc_context_len = CRC_CONTEXT_LEN_FW; 1275 1276 /* Determine SCSI command length -- align to 4 byte boundary */ 1277 if (cmd->cmd_len > 16) { 1278 additional_fcpcdb_len = cmd->cmd_len - 16; 1279 if ((cmd->cmd_len % 4) != 0) { 1280 /* SCSI cmd > 16 bytes must be multiple of 4 */ 1281 goto crc_queuing_error; 1282 } 1283 fcp_cmnd_len = 12 + cmd->cmd_len + 4; 1284 } else { 1285 additional_fcpcdb_len = 0; 1286 fcp_cmnd_len = 12 + 16 + 4; 1287 } 1288 1289 fcp_cmnd = &crc_ctx_pkt->fcp_cmnd; 1290 1291 fcp_cmnd->additional_cdb_len = additional_fcpcdb_len; 1292 if (cmd->sc_data_direction == DMA_TO_DEVICE) 1293 fcp_cmnd->additional_cdb_len |= 1; 1294 else if (cmd->sc_data_direction == DMA_FROM_DEVICE) 1295 fcp_cmnd->additional_cdb_len |= 2; 1296 1297 int_to_scsilun(cmd->device->lun, &fcp_cmnd->lun); 1298 memcpy(fcp_cmnd->cdb, cmd->cmnd, cmd->cmd_len); 1299 cmd_pkt->fcp_cmnd_dseg_len = cpu_to_le16(fcp_cmnd_len); 1300 cmd_pkt->fcp_cmnd_dseg_address[0] = cpu_to_le32( 1301 LSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF)); 1302 cmd_pkt->fcp_cmnd_dseg_address[1] = cpu_to_le32( 1303 MSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF)); 1304 fcp_cmnd->task_management = 0; 1305 1306 /* 1307 * Update tagged queuing modifier if using command tag queuing 1308 */ 1309 if (scsi_populate_tag_msg(cmd, tag)) { 1310 switch (tag[0]) { 1311 case HEAD_OF_QUEUE_TAG: 1312 fcp_cmnd->task_attribute = TSK_HEAD_OF_QUEUE; 1313 break; 1314 case ORDERED_QUEUE_TAG: 1315 fcp_cmnd->task_attribute = TSK_ORDERED; 1316 break; 1317 default: 1318 fcp_cmnd->task_attribute = TSK_SIMPLE; 1319 break; 1320 } 1321 } else { 1322 fcp_cmnd->task_attribute = TSK_SIMPLE; 1323 } 1324 1325 cmd_pkt->fcp_rsp_dseg_len = 0; /* Let response come in status iocb */ 1326 1327 /* Compute dif len and adjust data len to incude protection */ 1328 dif_bytes = 0; 1329 blk_size = cmd->device->sector_size; 1330 dif_bytes = (data_bytes / blk_size) * 8; 1331 1332 switch (scsi_get_prot_op(GET_CMD_SP(sp))) { 1333 case SCSI_PROT_READ_INSERT: 1334 case SCSI_PROT_WRITE_STRIP: 1335 total_bytes = data_bytes; 1336 data_bytes += dif_bytes; 1337 break; 1338 1339 case SCSI_PROT_READ_STRIP: 1340 case SCSI_PROT_WRITE_INSERT: 1341 case SCSI_PROT_READ_PASS: 1342 case SCSI_PROT_WRITE_PASS: 1343 total_bytes = data_bytes + dif_bytes; 1344 break; 1345 default: 1346 BUG(); 1347 } 1348 1349 if (!qla2x00_hba_err_chk_enabled(sp)) 1350 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 1351 /* HBA error checking enabled */ 1352 else if (IS_PI_UNINIT_CAPABLE(ha)) { 1353 if ((scsi_get_prot_type(GET_CMD_SP(sp)) == SCSI_PROT_DIF_TYPE1) 1354 || (scsi_get_prot_type(GET_CMD_SP(sp)) == 1355 SCSI_PROT_DIF_TYPE2)) 1356 fw_prot_opts |= BIT_10; 1357 else if (scsi_get_prot_type(GET_CMD_SP(sp)) == 1358 SCSI_PROT_DIF_TYPE3) 1359 fw_prot_opts |= BIT_11; 1360 } 1361 1362 if (!bundling) { 1363 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address; 1364 } else { 1365 /* 1366 * Configure Bundling if we need to fetch interlaving 1367 * protection PCI accesses 1368 */ 1369 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 1370 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 1371 crc_ctx_pkt->u.bundling.dseg_count = cpu_to_le16(tot_dsds - 1372 tot_prot_dsds); 1373 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address; 1374 } 1375 1376 /* Finish the common fields of CRC pkt */ 1377 crc_ctx_pkt->blk_size = cpu_to_le16(blk_size); 1378 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 1379 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 1380 crc_ctx_pkt->guard_seed = __constant_cpu_to_le16(0); 1381 /* Fibre channel byte count */ 1382 cmd_pkt->byte_count = cpu_to_le32(total_bytes); 1383 fcp_dl = (uint32_t *)(crc_ctx_pkt->fcp_cmnd.cdb + 16 + 1384 additional_fcpcdb_len); 1385 *fcp_dl = htonl(total_bytes); 1386 1387 if (!data_bytes || cmd->sc_data_direction == DMA_NONE) { 1388 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 1389 return QLA_SUCCESS; 1390 } 1391 /* Walks data segments */ 1392 1393 cmd_pkt->control_flags |= 1394 __constant_cpu_to_le16(CF_DATA_SEG_DESCR_ENABLE); 1395 1396 if (!bundling && tot_prot_dsds) { 1397 if (qla24xx_walk_and_build_sglist_no_difb(ha, sp, 1398 cur_dsd, tot_dsds)) 1399 goto crc_queuing_error; 1400 } else if (qla24xx_walk_and_build_sglist(ha, sp, cur_dsd, 1401 (tot_dsds - tot_prot_dsds))) 1402 goto crc_queuing_error; 1403 1404 if (bundling && tot_prot_dsds) { 1405 /* Walks dif segments */ 1406 cmd_pkt->control_flags |= 1407 __constant_cpu_to_le16(CF_DIF_SEG_DESCR_ENABLE); 1408 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address; 1409 if (qla24xx_walk_and_build_prot_sglist(ha, sp, cur_dsd, 1410 tot_prot_dsds)) 1411 goto crc_queuing_error; 1412 } 1413 return QLA_SUCCESS; 1414 1415 crc_queuing_error: 1416 /* Cleanup will be performed by the caller */ 1417 1418 return QLA_FUNCTION_FAILED; 1419 } 1420 1421 /** 1422 * qla24xx_start_scsi() - Send a SCSI command to the ISP 1423 * @sp: command to send to the ISP 1424 * 1425 * Returns non-zero if a failure occurred, else zero. 1426 */ 1427 int 1428 qla24xx_start_scsi(srb_t *sp) 1429 { 1430 int ret, nseg; 1431 unsigned long flags; 1432 uint32_t *clr_ptr; 1433 uint32_t index; 1434 uint32_t handle; 1435 struct cmd_type_7 *cmd_pkt; 1436 uint16_t cnt; 1437 uint16_t req_cnt; 1438 uint16_t tot_dsds; 1439 struct req_que *req = NULL; 1440 struct rsp_que *rsp = NULL; 1441 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 1442 struct scsi_qla_host *vha = sp->fcport->vha; 1443 struct qla_hw_data *ha = vha->hw; 1444 char tag[2]; 1445 1446 /* Setup device pointers. */ 1447 ret = 0; 1448 1449 qla25xx_set_que(sp, &rsp); 1450 req = vha->req; 1451 1452 /* So we know we haven't pci_map'ed anything yet */ 1453 tot_dsds = 0; 1454 1455 /* Send marker if required */ 1456 if (vha->marker_needed != 0) { 1457 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) != 1458 QLA_SUCCESS) 1459 return QLA_FUNCTION_FAILED; 1460 vha->marker_needed = 0; 1461 } 1462 1463 /* Acquire ring specific lock */ 1464 spin_lock_irqsave(&ha->hardware_lock, flags); 1465 1466 /* Check for room in outstanding command list. */ 1467 handle = req->current_outstanding_cmd; 1468 for (index = 1; index < req->num_outstanding_cmds; index++) { 1469 handle++; 1470 if (handle == req->num_outstanding_cmds) 1471 handle = 1; 1472 if (!req->outstanding_cmds[handle]) 1473 break; 1474 } 1475 if (index == req->num_outstanding_cmds) 1476 goto queuing_error; 1477 1478 /* Map the sg table so we have an accurate count of sg entries needed */ 1479 if (scsi_sg_count(cmd)) { 1480 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd), 1481 scsi_sg_count(cmd), cmd->sc_data_direction); 1482 if (unlikely(!nseg)) 1483 goto queuing_error; 1484 } else 1485 nseg = 0; 1486 1487 tot_dsds = nseg; 1488 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds); 1489 if (req->cnt < (req_cnt + 2)) { 1490 cnt = RD_REG_DWORD_RELAXED(req->req_q_out); 1491 1492 if (req->ring_index < cnt) 1493 req->cnt = cnt - req->ring_index; 1494 else 1495 req->cnt = req->length - 1496 (req->ring_index - cnt); 1497 if (req->cnt < (req_cnt + 2)) 1498 goto queuing_error; 1499 } 1500 1501 /* Build command packet. */ 1502 req->current_outstanding_cmd = handle; 1503 req->outstanding_cmds[handle] = sp; 1504 sp->handle = handle; 1505 cmd->host_scribble = (unsigned char *)(unsigned long)handle; 1506 req->cnt -= req_cnt; 1507 1508 cmd_pkt = (struct cmd_type_7 *)req->ring_ptr; 1509 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 1510 1511 /* Zero out remaining portion of packet. */ 1512 /* tagged queuing modifier -- default is TSK_SIMPLE (0). */ 1513 clr_ptr = (uint32_t *)cmd_pkt + 2; 1514 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 1515 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 1516 1517 /* Set NPORT-ID and LUN number*/ 1518 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1519 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; 1520 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; 1521 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; 1522 cmd_pkt->vp_index = sp->fcport->vha->vp_idx; 1523 1524 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun); 1525 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun)); 1526 1527 /* Update tagged queuing modifier -- default is TSK_SIMPLE (0). */ 1528 if (scsi_populate_tag_msg(cmd, tag)) { 1529 switch (tag[0]) { 1530 case HEAD_OF_QUEUE_TAG: 1531 cmd_pkt->task = TSK_HEAD_OF_QUEUE; 1532 break; 1533 case ORDERED_QUEUE_TAG: 1534 cmd_pkt->task = TSK_ORDERED; 1535 break; 1536 default: 1537 cmd_pkt->task = TSK_SIMPLE; 1538 break; 1539 } 1540 } else { 1541 cmd_pkt->task = TSK_SIMPLE; 1542 } 1543 1544 /* Load SCSI command packet. */ 1545 memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len); 1546 host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb)); 1547 1548 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); 1549 1550 /* Build IOCB segments */ 1551 qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds); 1552 1553 /* Set total data segment count. */ 1554 cmd_pkt->entry_count = (uint8_t)req_cnt; 1555 /* Specify response queue number where completion should happen */ 1556 cmd_pkt->entry_status = (uint8_t) rsp->id; 1557 wmb(); 1558 /* Adjust ring index. */ 1559 req->ring_index++; 1560 if (req->ring_index == req->length) { 1561 req->ring_index = 0; 1562 req->ring_ptr = req->ring; 1563 } else 1564 req->ring_ptr++; 1565 1566 sp->flags |= SRB_DMA_VALID; 1567 1568 /* Set chip new ring index. */ 1569 WRT_REG_DWORD(req->req_q_in, req->ring_index); 1570 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr); 1571 1572 /* Manage unprocessed RIO/ZIO commands in response queue. */ 1573 if (vha->flags.process_response_queue && 1574 rsp->ring_ptr->signature != RESPONSE_PROCESSED) 1575 qla24xx_process_response_queue(vha, rsp); 1576 1577 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1578 return QLA_SUCCESS; 1579 1580 queuing_error: 1581 if (tot_dsds) 1582 scsi_dma_unmap(cmd); 1583 1584 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1585 1586 return QLA_FUNCTION_FAILED; 1587 } 1588 1589 /** 1590 * qla24xx_dif_start_scsi() - Send a SCSI command to the ISP 1591 * @sp: command to send to the ISP 1592 * 1593 * Returns non-zero if a failure occurred, else zero. 1594 */ 1595 int 1596 qla24xx_dif_start_scsi(srb_t *sp) 1597 { 1598 int nseg; 1599 unsigned long flags; 1600 uint32_t *clr_ptr; 1601 uint32_t index; 1602 uint32_t handle; 1603 uint16_t cnt; 1604 uint16_t req_cnt = 0; 1605 uint16_t tot_dsds; 1606 uint16_t tot_prot_dsds; 1607 uint16_t fw_prot_opts = 0; 1608 struct req_que *req = NULL; 1609 struct rsp_que *rsp = NULL; 1610 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 1611 struct scsi_qla_host *vha = sp->fcport->vha; 1612 struct qla_hw_data *ha = vha->hw; 1613 struct cmd_type_crc_2 *cmd_pkt; 1614 uint32_t status = 0; 1615 1616 #define QDSS_GOT_Q_SPACE BIT_0 1617 1618 /* Only process protection or >16 cdb in this routine */ 1619 if (scsi_get_prot_op(cmd) == SCSI_PROT_NORMAL) { 1620 if (cmd->cmd_len <= 16) 1621 return qla24xx_start_scsi(sp); 1622 } 1623 1624 /* Setup device pointers. */ 1625 1626 qla25xx_set_que(sp, &rsp); 1627 req = vha->req; 1628 1629 /* So we know we haven't pci_map'ed anything yet */ 1630 tot_dsds = 0; 1631 1632 /* Send marker if required */ 1633 if (vha->marker_needed != 0) { 1634 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) != 1635 QLA_SUCCESS) 1636 return QLA_FUNCTION_FAILED; 1637 vha->marker_needed = 0; 1638 } 1639 1640 /* Acquire ring specific lock */ 1641 spin_lock_irqsave(&ha->hardware_lock, flags); 1642 1643 /* Check for room in outstanding command list. */ 1644 handle = req->current_outstanding_cmd; 1645 for (index = 1; index < req->num_outstanding_cmds; index++) { 1646 handle++; 1647 if (handle == req->num_outstanding_cmds) 1648 handle = 1; 1649 if (!req->outstanding_cmds[handle]) 1650 break; 1651 } 1652 1653 if (index == req->num_outstanding_cmds) 1654 goto queuing_error; 1655 1656 /* Compute number of required data segments */ 1657 /* Map the sg table so we have an accurate count of sg entries needed */ 1658 if (scsi_sg_count(cmd)) { 1659 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd), 1660 scsi_sg_count(cmd), cmd->sc_data_direction); 1661 if (unlikely(!nseg)) 1662 goto queuing_error; 1663 else 1664 sp->flags |= SRB_DMA_VALID; 1665 1666 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) || 1667 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) { 1668 struct qla2_sgx sgx; 1669 uint32_t partial; 1670 1671 memset(&sgx, 0, sizeof(struct qla2_sgx)); 1672 sgx.tot_bytes = scsi_bufflen(cmd); 1673 sgx.cur_sg = scsi_sglist(cmd); 1674 sgx.sp = sp; 1675 1676 nseg = 0; 1677 while (qla24xx_get_one_block_sg( 1678 cmd->device->sector_size, &sgx, &partial)) 1679 nseg++; 1680 } 1681 } else 1682 nseg = 0; 1683 1684 /* number of required data segments */ 1685 tot_dsds = nseg; 1686 1687 /* Compute number of required protection segments */ 1688 if (qla24xx_configure_prot_mode(sp, &fw_prot_opts)) { 1689 nseg = dma_map_sg(&ha->pdev->dev, scsi_prot_sglist(cmd), 1690 scsi_prot_sg_count(cmd), cmd->sc_data_direction); 1691 if (unlikely(!nseg)) 1692 goto queuing_error; 1693 else 1694 sp->flags |= SRB_CRC_PROT_DMA_VALID; 1695 1696 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) || 1697 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) { 1698 nseg = scsi_bufflen(cmd) / cmd->device->sector_size; 1699 } 1700 } else { 1701 nseg = 0; 1702 } 1703 1704 req_cnt = 1; 1705 /* Total Data and protection sg segment(s) */ 1706 tot_prot_dsds = nseg; 1707 tot_dsds += nseg; 1708 if (req->cnt < (req_cnt + 2)) { 1709 cnt = RD_REG_DWORD_RELAXED(req->req_q_out); 1710 1711 if (req->ring_index < cnt) 1712 req->cnt = cnt - req->ring_index; 1713 else 1714 req->cnt = req->length - 1715 (req->ring_index - cnt); 1716 if (req->cnt < (req_cnt + 2)) 1717 goto queuing_error; 1718 } 1719 1720 status |= QDSS_GOT_Q_SPACE; 1721 1722 /* Build header part of command packet (excluding the OPCODE). */ 1723 req->current_outstanding_cmd = handle; 1724 req->outstanding_cmds[handle] = sp; 1725 sp->handle = handle; 1726 cmd->host_scribble = (unsigned char *)(unsigned long)handle; 1727 req->cnt -= req_cnt; 1728 1729 /* Fill-in common area */ 1730 cmd_pkt = (struct cmd_type_crc_2 *)req->ring_ptr; 1731 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 1732 1733 clr_ptr = (uint32_t *)cmd_pkt + 2; 1734 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 1735 1736 /* Set NPORT-ID and LUN number*/ 1737 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1738 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; 1739 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; 1740 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; 1741 1742 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun); 1743 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun)); 1744 1745 /* Total Data and protection segment(s) */ 1746 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 1747 1748 /* Build IOCB segments and adjust for data protection segments */ 1749 if (qla24xx_build_scsi_crc_2_iocbs(sp, (struct cmd_type_crc_2 *) 1750 req->ring_ptr, tot_dsds, tot_prot_dsds, fw_prot_opts) != 1751 QLA_SUCCESS) 1752 goto queuing_error; 1753 1754 cmd_pkt->entry_count = (uint8_t)req_cnt; 1755 /* Specify response queue number where completion should happen */ 1756 cmd_pkt->entry_status = (uint8_t) rsp->id; 1757 cmd_pkt->timeout = __constant_cpu_to_le16(0); 1758 wmb(); 1759 1760 /* Adjust ring index. */ 1761 req->ring_index++; 1762 if (req->ring_index == req->length) { 1763 req->ring_index = 0; 1764 req->ring_ptr = req->ring; 1765 } else 1766 req->ring_ptr++; 1767 1768 /* Set chip new ring index. */ 1769 WRT_REG_DWORD(req->req_q_in, req->ring_index); 1770 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr); 1771 1772 /* Manage unprocessed RIO/ZIO commands in response queue. */ 1773 if (vha->flags.process_response_queue && 1774 rsp->ring_ptr->signature != RESPONSE_PROCESSED) 1775 qla24xx_process_response_queue(vha, rsp); 1776 1777 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1778 1779 return QLA_SUCCESS; 1780 1781 queuing_error: 1782 if (status & QDSS_GOT_Q_SPACE) { 1783 req->outstanding_cmds[handle] = NULL; 1784 req->cnt += req_cnt; 1785 } 1786 /* Cleanup will be performed by the caller (queuecommand) */ 1787 1788 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1789 return QLA_FUNCTION_FAILED; 1790 } 1791 1792 1793 static void qla25xx_set_que(srb_t *sp, struct rsp_que **rsp) 1794 { 1795 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 1796 struct qla_hw_data *ha = sp->fcport->vha->hw; 1797 int affinity = cmd->request->cpu; 1798 1799 if (ha->flags.cpu_affinity_enabled && affinity >= 0 && 1800 affinity < ha->max_rsp_queues - 1) 1801 *rsp = ha->rsp_q_map[affinity + 1]; 1802 else 1803 *rsp = ha->rsp_q_map[0]; 1804 } 1805 1806 /* Generic Control-SRB manipulation functions. */ 1807 void * 1808 qla2x00_alloc_iocbs(scsi_qla_host_t *vha, srb_t *sp) 1809 { 1810 struct qla_hw_data *ha = vha->hw; 1811 struct req_que *req = ha->req_q_map[0]; 1812 device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id); 1813 uint32_t index, handle; 1814 request_t *pkt; 1815 uint16_t cnt, req_cnt; 1816 1817 pkt = NULL; 1818 req_cnt = 1; 1819 handle = 0; 1820 1821 if (!sp) 1822 goto skip_cmd_array; 1823 1824 /* Check for room in outstanding command list. */ 1825 handle = req->current_outstanding_cmd; 1826 for (index = 1; req->num_outstanding_cmds; index++) { 1827 handle++; 1828 if (handle == req->num_outstanding_cmds) 1829 handle = 1; 1830 if (!req->outstanding_cmds[handle]) 1831 break; 1832 } 1833 if (index == req->num_outstanding_cmds) { 1834 ql_log(ql_log_warn, vha, 0x700b, 1835 "No room on outstanding cmd array.\n"); 1836 goto queuing_error; 1837 } 1838 1839 /* Prep command array. */ 1840 req->current_outstanding_cmd = handle; 1841 req->outstanding_cmds[handle] = sp; 1842 sp->handle = handle; 1843 1844 /* Adjust entry-counts as needed. */ 1845 if (sp->type != SRB_SCSI_CMD) 1846 req_cnt = sp->iocbs; 1847 1848 skip_cmd_array: 1849 /* Check for room on request queue. */ 1850 if (req->cnt < req_cnt) { 1851 if (ha->mqenable || IS_QLA83XX(ha)) 1852 cnt = RD_REG_DWORD(®->isp25mq.req_q_out); 1853 else if (IS_P3P_TYPE(ha)) 1854 cnt = RD_REG_DWORD(®->isp82.req_q_out); 1855 else if (IS_FWI2_CAPABLE(ha)) 1856 cnt = RD_REG_DWORD(®->isp24.req_q_out); 1857 else if (IS_QLAFX00(ha)) 1858 cnt = RD_REG_DWORD(®->ispfx00.req_q_out); 1859 else 1860 cnt = qla2x00_debounce_register( 1861 ISP_REQ_Q_OUT(ha, ®->isp)); 1862 1863 if (req->ring_index < cnt) 1864 req->cnt = cnt - req->ring_index; 1865 else 1866 req->cnt = req->length - 1867 (req->ring_index - cnt); 1868 } 1869 if (req->cnt < req_cnt) 1870 goto queuing_error; 1871 1872 /* Prep packet */ 1873 req->cnt -= req_cnt; 1874 pkt = req->ring_ptr; 1875 memset(pkt, 0, REQUEST_ENTRY_SIZE); 1876 if (IS_QLAFX00(ha)) { 1877 WRT_REG_BYTE((void __iomem *)&pkt->entry_count, req_cnt); 1878 WRT_REG_WORD((void __iomem *)&pkt->handle, handle); 1879 } else { 1880 pkt->entry_count = req_cnt; 1881 pkt->handle = handle; 1882 } 1883 1884 queuing_error: 1885 return pkt; 1886 } 1887 1888 static void 1889 qla24xx_login_iocb(srb_t *sp, struct logio_entry_24xx *logio) 1890 { 1891 struct srb_iocb *lio = &sp->u.iocb_cmd; 1892 1893 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; 1894 logio->control_flags = cpu_to_le16(LCF_COMMAND_PLOGI); 1895 if (lio->u.logio.flags & SRB_LOGIN_COND_PLOGI) 1896 logio->control_flags |= cpu_to_le16(LCF_COND_PLOGI); 1897 if (lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI) 1898 logio->control_flags |= cpu_to_le16(LCF_SKIP_PRLI); 1899 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1900 logio->port_id[0] = sp->fcport->d_id.b.al_pa; 1901 logio->port_id[1] = sp->fcport->d_id.b.area; 1902 logio->port_id[2] = sp->fcport->d_id.b.domain; 1903 logio->vp_index = sp->fcport->vha->vp_idx; 1904 } 1905 1906 static void 1907 qla2x00_login_iocb(srb_t *sp, struct mbx_entry *mbx) 1908 { 1909 struct qla_hw_data *ha = sp->fcport->vha->hw; 1910 struct srb_iocb *lio = &sp->u.iocb_cmd; 1911 uint16_t opts; 1912 1913 mbx->entry_type = MBX_IOCB_TYPE; 1914 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id); 1915 mbx->mb0 = cpu_to_le16(MBC_LOGIN_FABRIC_PORT); 1916 opts = lio->u.logio.flags & SRB_LOGIN_COND_PLOGI ? BIT_0 : 0; 1917 opts |= lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI ? BIT_1 : 0; 1918 if (HAS_EXTENDED_IDS(ha)) { 1919 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id); 1920 mbx->mb10 = cpu_to_le16(opts); 1921 } else { 1922 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | opts); 1923 } 1924 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain); 1925 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 | 1926 sp->fcport->d_id.b.al_pa); 1927 mbx->mb9 = cpu_to_le16(sp->fcport->vha->vp_idx); 1928 } 1929 1930 static void 1931 qla24xx_logout_iocb(srb_t *sp, struct logio_entry_24xx *logio) 1932 { 1933 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; 1934 logio->control_flags = 1935 cpu_to_le16(LCF_COMMAND_LOGO|LCF_IMPL_LOGO); 1936 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1937 logio->port_id[0] = sp->fcport->d_id.b.al_pa; 1938 logio->port_id[1] = sp->fcport->d_id.b.area; 1939 logio->port_id[2] = sp->fcport->d_id.b.domain; 1940 logio->vp_index = sp->fcport->vha->vp_idx; 1941 } 1942 1943 static void 1944 qla2x00_logout_iocb(srb_t *sp, struct mbx_entry *mbx) 1945 { 1946 struct qla_hw_data *ha = sp->fcport->vha->hw; 1947 1948 mbx->entry_type = MBX_IOCB_TYPE; 1949 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id); 1950 mbx->mb0 = cpu_to_le16(MBC_LOGOUT_FABRIC_PORT); 1951 mbx->mb1 = HAS_EXTENDED_IDS(ha) ? 1952 cpu_to_le16(sp->fcport->loop_id): 1953 cpu_to_le16(sp->fcport->loop_id << 8); 1954 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain); 1955 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 | 1956 sp->fcport->d_id.b.al_pa); 1957 mbx->mb9 = cpu_to_le16(sp->fcport->vha->vp_idx); 1958 /* Implicit: mbx->mbx10 = 0. */ 1959 } 1960 1961 static void 1962 qla24xx_adisc_iocb(srb_t *sp, struct logio_entry_24xx *logio) 1963 { 1964 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; 1965 logio->control_flags = cpu_to_le16(LCF_COMMAND_ADISC); 1966 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1967 logio->vp_index = sp->fcport->vha->vp_idx; 1968 } 1969 1970 static void 1971 qla2x00_adisc_iocb(srb_t *sp, struct mbx_entry *mbx) 1972 { 1973 struct qla_hw_data *ha = sp->fcport->vha->hw; 1974 1975 mbx->entry_type = MBX_IOCB_TYPE; 1976 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id); 1977 mbx->mb0 = cpu_to_le16(MBC_GET_PORT_DATABASE); 1978 if (HAS_EXTENDED_IDS(ha)) { 1979 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id); 1980 mbx->mb10 = cpu_to_le16(BIT_0); 1981 } else { 1982 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | BIT_0); 1983 } 1984 mbx->mb2 = cpu_to_le16(MSW(ha->async_pd_dma)); 1985 mbx->mb3 = cpu_to_le16(LSW(ha->async_pd_dma)); 1986 mbx->mb6 = cpu_to_le16(MSW(MSD(ha->async_pd_dma))); 1987 mbx->mb7 = cpu_to_le16(LSW(MSD(ha->async_pd_dma))); 1988 mbx->mb9 = cpu_to_le16(sp->fcport->vha->vp_idx); 1989 } 1990 1991 static void 1992 qla24xx_tm_iocb(srb_t *sp, struct tsk_mgmt_entry *tsk) 1993 { 1994 uint32_t flags; 1995 unsigned int lun; 1996 struct fc_port *fcport = sp->fcport; 1997 scsi_qla_host_t *vha = fcport->vha; 1998 struct qla_hw_data *ha = vha->hw; 1999 struct srb_iocb *iocb = &sp->u.iocb_cmd; 2000 struct req_que *req = vha->req; 2001 2002 flags = iocb->u.tmf.flags; 2003 lun = iocb->u.tmf.lun; 2004 2005 tsk->entry_type = TSK_MGMT_IOCB_TYPE; 2006 tsk->entry_count = 1; 2007 tsk->handle = MAKE_HANDLE(req->id, tsk->handle); 2008 tsk->nport_handle = cpu_to_le16(fcport->loop_id); 2009 tsk->timeout = cpu_to_le16(ha->r_a_tov / 10 * 2); 2010 tsk->control_flags = cpu_to_le32(flags); 2011 tsk->port_id[0] = fcport->d_id.b.al_pa; 2012 tsk->port_id[1] = fcport->d_id.b.area; 2013 tsk->port_id[2] = fcport->d_id.b.domain; 2014 tsk->vp_index = fcport->vha->vp_idx; 2015 2016 if (flags == TCF_LUN_RESET) { 2017 int_to_scsilun(lun, &tsk->lun); 2018 host_to_fcp_swap((uint8_t *)&tsk->lun, 2019 sizeof(tsk->lun)); 2020 } 2021 } 2022 2023 static void 2024 qla24xx_els_iocb(srb_t *sp, struct els_entry_24xx *els_iocb) 2025 { 2026 struct fc_bsg_job *bsg_job = sp->u.bsg_job; 2027 2028 els_iocb->entry_type = ELS_IOCB_TYPE; 2029 els_iocb->entry_count = 1; 2030 els_iocb->sys_define = 0; 2031 els_iocb->entry_status = 0; 2032 els_iocb->handle = sp->handle; 2033 els_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2034 els_iocb->tx_dsd_count = __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt); 2035 els_iocb->vp_index = sp->fcport->vha->vp_idx; 2036 els_iocb->sof_type = EST_SOFI3; 2037 els_iocb->rx_dsd_count = __constant_cpu_to_le16(bsg_job->reply_payload.sg_cnt); 2038 2039 els_iocb->opcode = 2040 sp->type == SRB_ELS_CMD_RPT ? 2041 bsg_job->request->rqst_data.r_els.els_code : 2042 bsg_job->request->rqst_data.h_els.command_code; 2043 els_iocb->port_id[0] = sp->fcport->d_id.b.al_pa; 2044 els_iocb->port_id[1] = sp->fcport->d_id.b.area; 2045 els_iocb->port_id[2] = sp->fcport->d_id.b.domain; 2046 els_iocb->control_flags = 0; 2047 els_iocb->rx_byte_count = 2048 cpu_to_le32(bsg_job->reply_payload.payload_len); 2049 els_iocb->tx_byte_count = 2050 cpu_to_le32(bsg_job->request_payload.payload_len); 2051 2052 els_iocb->tx_address[0] = cpu_to_le32(LSD(sg_dma_address 2053 (bsg_job->request_payload.sg_list))); 2054 els_iocb->tx_address[1] = cpu_to_le32(MSD(sg_dma_address 2055 (bsg_job->request_payload.sg_list))); 2056 els_iocb->tx_len = cpu_to_le32(sg_dma_len 2057 (bsg_job->request_payload.sg_list)); 2058 2059 els_iocb->rx_address[0] = cpu_to_le32(LSD(sg_dma_address 2060 (bsg_job->reply_payload.sg_list))); 2061 els_iocb->rx_address[1] = cpu_to_le32(MSD(sg_dma_address 2062 (bsg_job->reply_payload.sg_list))); 2063 els_iocb->rx_len = cpu_to_le32(sg_dma_len 2064 (bsg_job->reply_payload.sg_list)); 2065 2066 sp->fcport->vha->qla_stats.control_requests++; 2067 } 2068 2069 static void 2070 qla2x00_ct_iocb(srb_t *sp, ms_iocb_entry_t *ct_iocb) 2071 { 2072 uint16_t avail_dsds; 2073 uint32_t *cur_dsd; 2074 struct scatterlist *sg; 2075 int index; 2076 uint16_t tot_dsds; 2077 scsi_qla_host_t *vha = sp->fcport->vha; 2078 struct qla_hw_data *ha = vha->hw; 2079 struct fc_bsg_job *bsg_job = sp->u.bsg_job; 2080 int loop_iterartion = 0; 2081 int cont_iocb_prsnt = 0; 2082 int entry_count = 1; 2083 2084 memset(ct_iocb, 0, sizeof(ms_iocb_entry_t)); 2085 ct_iocb->entry_type = CT_IOCB_TYPE; 2086 ct_iocb->entry_status = 0; 2087 ct_iocb->handle1 = sp->handle; 2088 SET_TARGET_ID(ha, ct_iocb->loop_id, sp->fcport->loop_id); 2089 ct_iocb->status = __constant_cpu_to_le16(0); 2090 ct_iocb->control_flags = __constant_cpu_to_le16(0); 2091 ct_iocb->timeout = 0; 2092 ct_iocb->cmd_dsd_count = 2093 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt); 2094 ct_iocb->total_dsd_count = 2095 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt + 1); 2096 ct_iocb->req_bytecount = 2097 cpu_to_le32(bsg_job->request_payload.payload_len); 2098 ct_iocb->rsp_bytecount = 2099 cpu_to_le32(bsg_job->reply_payload.payload_len); 2100 2101 ct_iocb->dseg_req_address[0] = cpu_to_le32(LSD(sg_dma_address 2102 (bsg_job->request_payload.sg_list))); 2103 ct_iocb->dseg_req_address[1] = cpu_to_le32(MSD(sg_dma_address 2104 (bsg_job->request_payload.sg_list))); 2105 ct_iocb->dseg_req_length = ct_iocb->req_bytecount; 2106 2107 ct_iocb->dseg_rsp_address[0] = cpu_to_le32(LSD(sg_dma_address 2108 (bsg_job->reply_payload.sg_list))); 2109 ct_iocb->dseg_rsp_address[1] = cpu_to_le32(MSD(sg_dma_address 2110 (bsg_job->reply_payload.sg_list))); 2111 ct_iocb->dseg_rsp_length = ct_iocb->rsp_bytecount; 2112 2113 avail_dsds = 1; 2114 cur_dsd = (uint32_t *)ct_iocb->dseg_rsp_address; 2115 index = 0; 2116 tot_dsds = bsg_job->reply_payload.sg_cnt; 2117 2118 for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) { 2119 dma_addr_t sle_dma; 2120 cont_a64_entry_t *cont_pkt; 2121 2122 /* Allocate additional continuation packets? */ 2123 if (avail_dsds == 0) { 2124 /* 2125 * Five DSDs are available in the Cont. 2126 * Type 1 IOCB. 2127 */ 2128 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, 2129 vha->hw->req_q_map[0]); 2130 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address; 2131 avail_dsds = 5; 2132 cont_iocb_prsnt = 1; 2133 entry_count++; 2134 } 2135 2136 sle_dma = sg_dma_address(sg); 2137 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 2138 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 2139 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 2140 loop_iterartion++; 2141 avail_dsds--; 2142 } 2143 ct_iocb->entry_count = entry_count; 2144 2145 sp->fcport->vha->qla_stats.control_requests++; 2146 } 2147 2148 static void 2149 qla24xx_ct_iocb(srb_t *sp, struct ct_entry_24xx *ct_iocb) 2150 { 2151 uint16_t avail_dsds; 2152 uint32_t *cur_dsd; 2153 struct scatterlist *sg; 2154 int index; 2155 uint16_t tot_dsds; 2156 scsi_qla_host_t *vha = sp->fcport->vha; 2157 struct qla_hw_data *ha = vha->hw; 2158 struct fc_bsg_job *bsg_job = sp->u.bsg_job; 2159 int loop_iterartion = 0; 2160 int cont_iocb_prsnt = 0; 2161 int entry_count = 1; 2162 2163 ct_iocb->entry_type = CT_IOCB_TYPE; 2164 ct_iocb->entry_status = 0; 2165 ct_iocb->sys_define = 0; 2166 ct_iocb->handle = sp->handle; 2167 2168 ct_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2169 ct_iocb->vp_index = sp->fcport->vha->vp_idx; 2170 ct_iocb->comp_status = __constant_cpu_to_le16(0); 2171 2172 ct_iocb->cmd_dsd_count = 2173 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt); 2174 ct_iocb->timeout = 0; 2175 ct_iocb->rsp_dsd_count = 2176 __constant_cpu_to_le16(bsg_job->reply_payload.sg_cnt); 2177 ct_iocb->rsp_byte_count = 2178 cpu_to_le32(bsg_job->reply_payload.payload_len); 2179 ct_iocb->cmd_byte_count = 2180 cpu_to_le32(bsg_job->request_payload.payload_len); 2181 ct_iocb->dseg_0_address[0] = cpu_to_le32(LSD(sg_dma_address 2182 (bsg_job->request_payload.sg_list))); 2183 ct_iocb->dseg_0_address[1] = cpu_to_le32(MSD(sg_dma_address 2184 (bsg_job->request_payload.sg_list))); 2185 ct_iocb->dseg_0_len = cpu_to_le32(sg_dma_len 2186 (bsg_job->request_payload.sg_list)); 2187 2188 avail_dsds = 1; 2189 cur_dsd = (uint32_t *)ct_iocb->dseg_1_address; 2190 index = 0; 2191 tot_dsds = bsg_job->reply_payload.sg_cnt; 2192 2193 for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) { 2194 dma_addr_t sle_dma; 2195 cont_a64_entry_t *cont_pkt; 2196 2197 /* Allocate additional continuation packets? */ 2198 if (avail_dsds == 0) { 2199 /* 2200 * Five DSDs are available in the Cont. 2201 * Type 1 IOCB. 2202 */ 2203 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, 2204 ha->req_q_map[0]); 2205 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address; 2206 avail_dsds = 5; 2207 cont_iocb_prsnt = 1; 2208 entry_count++; 2209 } 2210 2211 sle_dma = sg_dma_address(sg); 2212 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 2213 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 2214 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 2215 loop_iterartion++; 2216 avail_dsds--; 2217 } 2218 ct_iocb->entry_count = entry_count; 2219 } 2220 2221 /* 2222 * qla82xx_start_scsi() - Send a SCSI command to the ISP 2223 * @sp: command to send to the ISP 2224 * 2225 * Returns non-zero if a failure occurred, else zero. 2226 */ 2227 int 2228 qla82xx_start_scsi(srb_t *sp) 2229 { 2230 int ret, nseg; 2231 unsigned long flags; 2232 struct scsi_cmnd *cmd; 2233 uint32_t *clr_ptr; 2234 uint32_t index; 2235 uint32_t handle; 2236 uint16_t cnt; 2237 uint16_t req_cnt; 2238 uint16_t tot_dsds; 2239 struct device_reg_82xx __iomem *reg; 2240 uint32_t dbval; 2241 uint32_t *fcp_dl; 2242 uint8_t additional_cdb_len; 2243 struct ct6_dsd *ctx; 2244 struct scsi_qla_host *vha = sp->fcport->vha; 2245 struct qla_hw_data *ha = vha->hw; 2246 struct req_que *req = NULL; 2247 struct rsp_que *rsp = NULL; 2248 char tag[2]; 2249 2250 /* Setup device pointers. */ 2251 ret = 0; 2252 reg = &ha->iobase->isp82; 2253 cmd = GET_CMD_SP(sp); 2254 req = vha->req; 2255 rsp = ha->rsp_q_map[0]; 2256 2257 /* So we know we haven't pci_map'ed anything yet */ 2258 tot_dsds = 0; 2259 2260 dbval = 0x04 | (ha->portnum << 5); 2261 2262 /* Send marker if required */ 2263 if (vha->marker_needed != 0) { 2264 if (qla2x00_marker(vha, req, 2265 rsp, 0, 0, MK_SYNC_ALL) != QLA_SUCCESS) { 2266 ql_log(ql_log_warn, vha, 0x300c, 2267 "qla2x00_marker failed for cmd=%p.\n", cmd); 2268 return QLA_FUNCTION_FAILED; 2269 } 2270 vha->marker_needed = 0; 2271 } 2272 2273 /* Acquire ring specific lock */ 2274 spin_lock_irqsave(&ha->hardware_lock, flags); 2275 2276 /* Check for room in outstanding command list. */ 2277 handle = req->current_outstanding_cmd; 2278 for (index = 1; index < req->num_outstanding_cmds; index++) { 2279 handle++; 2280 if (handle == req->num_outstanding_cmds) 2281 handle = 1; 2282 if (!req->outstanding_cmds[handle]) 2283 break; 2284 } 2285 if (index == req->num_outstanding_cmds) 2286 goto queuing_error; 2287 2288 /* Map the sg table so we have an accurate count of sg entries needed */ 2289 if (scsi_sg_count(cmd)) { 2290 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd), 2291 scsi_sg_count(cmd), cmd->sc_data_direction); 2292 if (unlikely(!nseg)) 2293 goto queuing_error; 2294 } else 2295 nseg = 0; 2296 2297 tot_dsds = nseg; 2298 2299 if (tot_dsds > ql2xshiftctondsd) { 2300 struct cmd_type_6 *cmd_pkt; 2301 uint16_t more_dsd_lists = 0; 2302 struct dsd_dma *dsd_ptr; 2303 uint16_t i; 2304 2305 more_dsd_lists = qla24xx_calc_dsd_lists(tot_dsds); 2306 if ((more_dsd_lists + ha->gbl_dsd_inuse) >= NUM_DSD_CHAIN) { 2307 ql_dbg(ql_dbg_io, vha, 0x300d, 2308 "Num of DSD list %d is than %d for cmd=%p.\n", 2309 more_dsd_lists + ha->gbl_dsd_inuse, NUM_DSD_CHAIN, 2310 cmd); 2311 goto queuing_error; 2312 } 2313 2314 if (more_dsd_lists <= ha->gbl_dsd_avail) 2315 goto sufficient_dsds; 2316 else 2317 more_dsd_lists -= ha->gbl_dsd_avail; 2318 2319 for (i = 0; i < more_dsd_lists; i++) { 2320 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC); 2321 if (!dsd_ptr) { 2322 ql_log(ql_log_fatal, vha, 0x300e, 2323 "Failed to allocate memory for dsd_dma " 2324 "for cmd=%p.\n", cmd); 2325 goto queuing_error; 2326 } 2327 2328 dsd_ptr->dsd_addr = dma_pool_alloc(ha->dl_dma_pool, 2329 GFP_ATOMIC, &dsd_ptr->dsd_list_dma); 2330 if (!dsd_ptr->dsd_addr) { 2331 kfree(dsd_ptr); 2332 ql_log(ql_log_fatal, vha, 0x300f, 2333 "Failed to allocate memory for dsd_addr " 2334 "for cmd=%p.\n", cmd); 2335 goto queuing_error; 2336 } 2337 list_add_tail(&dsd_ptr->list, &ha->gbl_dsd_list); 2338 ha->gbl_dsd_avail++; 2339 } 2340 2341 sufficient_dsds: 2342 req_cnt = 1; 2343 2344 if (req->cnt < (req_cnt + 2)) { 2345 cnt = (uint16_t)RD_REG_DWORD_RELAXED( 2346 ®->req_q_out[0]); 2347 if (req->ring_index < cnt) 2348 req->cnt = cnt - req->ring_index; 2349 else 2350 req->cnt = req->length - 2351 (req->ring_index - cnt); 2352 if (req->cnt < (req_cnt + 2)) 2353 goto queuing_error; 2354 } 2355 2356 ctx = sp->u.scmd.ctx = 2357 mempool_alloc(ha->ctx_mempool, GFP_ATOMIC); 2358 if (!ctx) { 2359 ql_log(ql_log_fatal, vha, 0x3010, 2360 "Failed to allocate ctx for cmd=%p.\n", cmd); 2361 goto queuing_error; 2362 } 2363 2364 memset(ctx, 0, sizeof(struct ct6_dsd)); 2365 ctx->fcp_cmnd = dma_pool_alloc(ha->fcp_cmnd_dma_pool, 2366 GFP_ATOMIC, &ctx->fcp_cmnd_dma); 2367 if (!ctx->fcp_cmnd) { 2368 ql_log(ql_log_fatal, vha, 0x3011, 2369 "Failed to allocate fcp_cmnd for cmd=%p.\n", cmd); 2370 goto queuing_error; 2371 } 2372 2373 /* Initialize the DSD list and dma handle */ 2374 INIT_LIST_HEAD(&ctx->dsd_list); 2375 ctx->dsd_use_cnt = 0; 2376 2377 if (cmd->cmd_len > 16) { 2378 additional_cdb_len = cmd->cmd_len - 16; 2379 if ((cmd->cmd_len % 4) != 0) { 2380 /* SCSI command bigger than 16 bytes must be 2381 * multiple of 4 2382 */ 2383 ql_log(ql_log_warn, vha, 0x3012, 2384 "scsi cmd len %d not multiple of 4 " 2385 "for cmd=%p.\n", cmd->cmd_len, cmd); 2386 goto queuing_error_fcp_cmnd; 2387 } 2388 ctx->fcp_cmnd_len = 12 + cmd->cmd_len + 4; 2389 } else { 2390 additional_cdb_len = 0; 2391 ctx->fcp_cmnd_len = 12 + 16 + 4; 2392 } 2393 2394 cmd_pkt = (struct cmd_type_6 *)req->ring_ptr; 2395 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 2396 2397 /* Zero out remaining portion of packet. */ 2398 /* tagged queuing modifier -- default is TSK_SIMPLE (0). */ 2399 clr_ptr = (uint32_t *)cmd_pkt + 2; 2400 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 2401 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 2402 2403 /* Set NPORT-ID and LUN number*/ 2404 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2405 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; 2406 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; 2407 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; 2408 cmd_pkt->vp_index = sp->fcport->vha->vp_idx; 2409 2410 /* Build IOCB segments */ 2411 if (qla24xx_build_scsi_type_6_iocbs(sp, cmd_pkt, tot_dsds)) 2412 goto queuing_error_fcp_cmnd; 2413 2414 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun); 2415 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun)); 2416 2417 /* build FCP_CMND IU */ 2418 memset(ctx->fcp_cmnd, 0, sizeof(struct fcp_cmnd)); 2419 int_to_scsilun(cmd->device->lun, &ctx->fcp_cmnd->lun); 2420 ctx->fcp_cmnd->additional_cdb_len = additional_cdb_len; 2421 2422 if (cmd->sc_data_direction == DMA_TO_DEVICE) 2423 ctx->fcp_cmnd->additional_cdb_len |= 1; 2424 else if (cmd->sc_data_direction == DMA_FROM_DEVICE) 2425 ctx->fcp_cmnd->additional_cdb_len |= 2; 2426 2427 /* 2428 * Update tagged queuing modifier -- default is TSK_SIMPLE (0). 2429 */ 2430 if (scsi_populate_tag_msg(cmd, tag)) { 2431 switch (tag[0]) { 2432 case HEAD_OF_QUEUE_TAG: 2433 ctx->fcp_cmnd->task_attribute = 2434 TSK_HEAD_OF_QUEUE; 2435 break; 2436 case ORDERED_QUEUE_TAG: 2437 ctx->fcp_cmnd->task_attribute = 2438 TSK_ORDERED; 2439 break; 2440 } 2441 } 2442 2443 /* Populate the FCP_PRIO. */ 2444 if (ha->flags.fcp_prio_enabled) 2445 ctx->fcp_cmnd->task_attribute |= 2446 sp->fcport->fcp_prio << 3; 2447 2448 memcpy(ctx->fcp_cmnd->cdb, cmd->cmnd, cmd->cmd_len); 2449 2450 fcp_dl = (uint32_t *)(ctx->fcp_cmnd->cdb + 16 + 2451 additional_cdb_len); 2452 *fcp_dl = htonl((uint32_t)scsi_bufflen(cmd)); 2453 2454 cmd_pkt->fcp_cmnd_dseg_len = cpu_to_le16(ctx->fcp_cmnd_len); 2455 cmd_pkt->fcp_cmnd_dseg_address[0] = 2456 cpu_to_le32(LSD(ctx->fcp_cmnd_dma)); 2457 cmd_pkt->fcp_cmnd_dseg_address[1] = 2458 cpu_to_le32(MSD(ctx->fcp_cmnd_dma)); 2459 2460 sp->flags |= SRB_FCP_CMND_DMA_VALID; 2461 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); 2462 /* Set total data segment count. */ 2463 cmd_pkt->entry_count = (uint8_t)req_cnt; 2464 /* Specify response queue number where 2465 * completion should happen 2466 */ 2467 cmd_pkt->entry_status = (uint8_t) rsp->id; 2468 } else { 2469 struct cmd_type_7 *cmd_pkt; 2470 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds); 2471 if (req->cnt < (req_cnt + 2)) { 2472 cnt = (uint16_t)RD_REG_DWORD_RELAXED( 2473 ®->req_q_out[0]); 2474 if (req->ring_index < cnt) 2475 req->cnt = cnt - req->ring_index; 2476 else 2477 req->cnt = req->length - 2478 (req->ring_index - cnt); 2479 } 2480 if (req->cnt < (req_cnt + 2)) 2481 goto queuing_error; 2482 2483 cmd_pkt = (struct cmd_type_7 *)req->ring_ptr; 2484 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 2485 2486 /* Zero out remaining portion of packet. */ 2487 /* tagged queuing modifier -- default is TSK_SIMPLE (0).*/ 2488 clr_ptr = (uint32_t *)cmd_pkt + 2; 2489 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 2490 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 2491 2492 /* Set NPORT-ID and LUN number*/ 2493 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2494 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; 2495 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; 2496 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; 2497 cmd_pkt->vp_index = sp->fcport->vha->vp_idx; 2498 2499 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun); 2500 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, 2501 sizeof(cmd_pkt->lun)); 2502 2503 /* 2504 * Update tagged queuing modifier -- default is TSK_SIMPLE (0). 2505 */ 2506 if (scsi_populate_tag_msg(cmd, tag)) { 2507 switch (tag[0]) { 2508 case HEAD_OF_QUEUE_TAG: 2509 cmd_pkt->task = TSK_HEAD_OF_QUEUE; 2510 break; 2511 case ORDERED_QUEUE_TAG: 2512 cmd_pkt->task = TSK_ORDERED; 2513 break; 2514 } 2515 } 2516 2517 /* Populate the FCP_PRIO. */ 2518 if (ha->flags.fcp_prio_enabled) 2519 cmd_pkt->task |= sp->fcport->fcp_prio << 3; 2520 2521 /* Load SCSI command packet. */ 2522 memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len); 2523 host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb)); 2524 2525 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); 2526 2527 /* Build IOCB segments */ 2528 qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds); 2529 2530 /* Set total data segment count. */ 2531 cmd_pkt->entry_count = (uint8_t)req_cnt; 2532 /* Specify response queue number where 2533 * completion should happen. 2534 */ 2535 cmd_pkt->entry_status = (uint8_t) rsp->id; 2536 2537 } 2538 /* Build command packet. */ 2539 req->current_outstanding_cmd = handle; 2540 req->outstanding_cmds[handle] = sp; 2541 sp->handle = handle; 2542 cmd->host_scribble = (unsigned char *)(unsigned long)handle; 2543 req->cnt -= req_cnt; 2544 wmb(); 2545 2546 /* Adjust ring index. */ 2547 req->ring_index++; 2548 if (req->ring_index == req->length) { 2549 req->ring_index = 0; 2550 req->ring_ptr = req->ring; 2551 } else 2552 req->ring_ptr++; 2553 2554 sp->flags |= SRB_DMA_VALID; 2555 2556 /* Set chip new ring index. */ 2557 /* write, read and verify logic */ 2558 dbval = dbval | (req->id << 8) | (req->ring_index << 16); 2559 if (ql2xdbwr) 2560 qla82xx_wr_32(ha, ha->nxdb_wr_ptr, dbval); 2561 else { 2562 WRT_REG_DWORD( 2563 (unsigned long __iomem *)ha->nxdb_wr_ptr, 2564 dbval); 2565 wmb(); 2566 while (RD_REG_DWORD((void __iomem *)ha->nxdb_rd_ptr) != dbval) { 2567 WRT_REG_DWORD( 2568 (unsigned long __iomem *)ha->nxdb_wr_ptr, 2569 dbval); 2570 wmb(); 2571 } 2572 } 2573 2574 /* Manage unprocessed RIO/ZIO commands in response queue. */ 2575 if (vha->flags.process_response_queue && 2576 rsp->ring_ptr->signature != RESPONSE_PROCESSED) 2577 qla24xx_process_response_queue(vha, rsp); 2578 2579 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2580 return QLA_SUCCESS; 2581 2582 queuing_error_fcp_cmnd: 2583 dma_pool_free(ha->fcp_cmnd_dma_pool, ctx->fcp_cmnd, ctx->fcp_cmnd_dma); 2584 queuing_error: 2585 if (tot_dsds) 2586 scsi_dma_unmap(cmd); 2587 2588 if (sp->u.scmd.ctx) { 2589 mempool_free(sp->u.scmd.ctx, ha->ctx_mempool); 2590 sp->u.scmd.ctx = NULL; 2591 } 2592 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2593 2594 return QLA_FUNCTION_FAILED; 2595 } 2596 2597 int 2598 qla2x00_start_sp(srb_t *sp) 2599 { 2600 int rval; 2601 struct qla_hw_data *ha = sp->fcport->vha->hw; 2602 void *pkt; 2603 unsigned long flags; 2604 2605 rval = QLA_FUNCTION_FAILED; 2606 spin_lock_irqsave(&ha->hardware_lock, flags); 2607 pkt = qla2x00_alloc_iocbs(sp->fcport->vha, sp); 2608 if (!pkt) { 2609 ql_log(ql_log_warn, sp->fcport->vha, 0x700c, 2610 "qla2x00_alloc_iocbs failed.\n"); 2611 goto done; 2612 } 2613 2614 rval = QLA_SUCCESS; 2615 switch (sp->type) { 2616 case SRB_LOGIN_CMD: 2617 IS_FWI2_CAPABLE(ha) ? 2618 qla24xx_login_iocb(sp, pkt) : 2619 qla2x00_login_iocb(sp, pkt); 2620 break; 2621 case SRB_LOGOUT_CMD: 2622 IS_FWI2_CAPABLE(ha) ? 2623 qla24xx_logout_iocb(sp, pkt) : 2624 qla2x00_logout_iocb(sp, pkt); 2625 break; 2626 case SRB_ELS_CMD_RPT: 2627 case SRB_ELS_CMD_HST: 2628 qla24xx_els_iocb(sp, pkt); 2629 break; 2630 case SRB_CT_CMD: 2631 IS_FWI2_CAPABLE(ha) ? 2632 qla24xx_ct_iocb(sp, pkt) : 2633 qla2x00_ct_iocb(sp, pkt); 2634 break; 2635 case SRB_ADISC_CMD: 2636 IS_FWI2_CAPABLE(ha) ? 2637 qla24xx_adisc_iocb(sp, pkt) : 2638 qla2x00_adisc_iocb(sp, pkt); 2639 break; 2640 case SRB_TM_CMD: 2641 IS_QLAFX00(ha) ? 2642 qlafx00_tm_iocb(sp, pkt) : 2643 qla24xx_tm_iocb(sp, pkt); 2644 break; 2645 case SRB_FXIOCB_DCMD: 2646 case SRB_FXIOCB_BCMD: 2647 qlafx00_fxdisc_iocb(sp, pkt); 2648 break; 2649 case SRB_ABT_CMD: 2650 qlafx00_abort_iocb(sp, pkt); 2651 break; 2652 default: 2653 break; 2654 } 2655 2656 wmb(); 2657 qla2x00_start_iocbs(sp->fcport->vha, ha->req_q_map[0]); 2658 done: 2659 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2660 return rval; 2661 } 2662 2663 static void 2664 qla25xx_build_bidir_iocb(srb_t *sp, struct scsi_qla_host *vha, 2665 struct cmd_bidir *cmd_pkt, uint32_t tot_dsds) 2666 { 2667 uint16_t avail_dsds; 2668 uint32_t *cur_dsd; 2669 uint32_t req_data_len = 0; 2670 uint32_t rsp_data_len = 0; 2671 struct scatterlist *sg; 2672 int index; 2673 int entry_count = 1; 2674 struct fc_bsg_job *bsg_job = sp->u.bsg_job; 2675 2676 /*Update entry type to indicate bidir command */ 2677 *((uint32_t *)(&cmd_pkt->entry_type)) = 2678 __constant_cpu_to_le32(COMMAND_BIDIRECTIONAL); 2679 2680 /* Set the transfer direction, in this set both flags 2681 * Also set the BD_WRAP_BACK flag, firmware will take care 2682 * assigning DID=SID for outgoing pkts. 2683 */ 2684 cmd_pkt->wr_dseg_count = cpu_to_le16(bsg_job->request_payload.sg_cnt); 2685 cmd_pkt->rd_dseg_count = cpu_to_le16(bsg_job->reply_payload.sg_cnt); 2686 cmd_pkt->control_flags = 2687 __constant_cpu_to_le16(BD_WRITE_DATA | BD_READ_DATA | 2688 BD_WRAP_BACK); 2689 2690 req_data_len = rsp_data_len = bsg_job->request_payload.payload_len; 2691 cmd_pkt->wr_byte_count = cpu_to_le32(req_data_len); 2692 cmd_pkt->rd_byte_count = cpu_to_le32(rsp_data_len); 2693 cmd_pkt->timeout = cpu_to_le16(qla2x00_get_async_timeout(vha) + 2); 2694 2695 vha->bidi_stats.transfer_bytes += req_data_len; 2696 vha->bidi_stats.io_count++; 2697 2698 vha->qla_stats.output_bytes += req_data_len; 2699 vha->qla_stats.output_requests++; 2700 2701 /* Only one dsd is available for bidirectional IOCB, remaining dsds 2702 * are bundled in continuation iocb 2703 */ 2704 avail_dsds = 1; 2705 cur_dsd = (uint32_t *)&cmd_pkt->fcp_data_dseg_address; 2706 2707 index = 0; 2708 2709 for_each_sg(bsg_job->request_payload.sg_list, sg, 2710 bsg_job->request_payload.sg_cnt, index) { 2711 dma_addr_t sle_dma; 2712 cont_a64_entry_t *cont_pkt; 2713 2714 /* Allocate additional continuation packets */ 2715 if (avail_dsds == 0) { 2716 /* Continuation type 1 IOCB can accomodate 2717 * 5 DSDS 2718 */ 2719 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req); 2720 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address; 2721 avail_dsds = 5; 2722 entry_count++; 2723 } 2724 sle_dma = sg_dma_address(sg); 2725 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 2726 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 2727 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 2728 avail_dsds--; 2729 } 2730 /* For read request DSD will always goes to continuation IOCB 2731 * and follow the write DSD. If there is room on the current IOCB 2732 * then it is added to that IOCB else new continuation IOCB is 2733 * allocated. 2734 */ 2735 for_each_sg(bsg_job->reply_payload.sg_list, sg, 2736 bsg_job->reply_payload.sg_cnt, index) { 2737 dma_addr_t sle_dma; 2738 cont_a64_entry_t *cont_pkt; 2739 2740 /* Allocate additional continuation packets */ 2741 if (avail_dsds == 0) { 2742 /* Continuation type 1 IOCB can accomodate 2743 * 5 DSDS 2744 */ 2745 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req); 2746 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address; 2747 avail_dsds = 5; 2748 entry_count++; 2749 } 2750 sle_dma = sg_dma_address(sg); 2751 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 2752 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 2753 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 2754 avail_dsds--; 2755 } 2756 /* This value should be same as number of IOCB required for this cmd */ 2757 cmd_pkt->entry_count = entry_count; 2758 } 2759 2760 int 2761 qla2x00_start_bidir(srb_t *sp, struct scsi_qla_host *vha, uint32_t tot_dsds) 2762 { 2763 2764 struct qla_hw_data *ha = vha->hw; 2765 unsigned long flags; 2766 uint32_t handle; 2767 uint32_t index; 2768 uint16_t req_cnt; 2769 uint16_t cnt; 2770 uint32_t *clr_ptr; 2771 struct cmd_bidir *cmd_pkt = NULL; 2772 struct rsp_que *rsp; 2773 struct req_que *req; 2774 int rval = EXT_STATUS_OK; 2775 2776 rval = QLA_SUCCESS; 2777 2778 rsp = ha->rsp_q_map[0]; 2779 req = vha->req; 2780 2781 /* Send marker if required */ 2782 if (vha->marker_needed != 0) { 2783 if (qla2x00_marker(vha, req, 2784 rsp, 0, 0, MK_SYNC_ALL) != QLA_SUCCESS) 2785 return EXT_STATUS_MAILBOX; 2786 vha->marker_needed = 0; 2787 } 2788 2789 /* Acquire ring specific lock */ 2790 spin_lock_irqsave(&ha->hardware_lock, flags); 2791 2792 /* Check for room in outstanding command list. */ 2793 handle = req->current_outstanding_cmd; 2794 for (index = 1; index < req->num_outstanding_cmds; index++) { 2795 handle++; 2796 if (handle == req->num_outstanding_cmds) 2797 handle = 1; 2798 if (!req->outstanding_cmds[handle]) 2799 break; 2800 } 2801 2802 if (index == req->num_outstanding_cmds) { 2803 rval = EXT_STATUS_BUSY; 2804 goto queuing_error; 2805 } 2806 2807 /* Calculate number of IOCB required */ 2808 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds); 2809 2810 /* Check for room on request queue. */ 2811 if (req->cnt < req_cnt + 2) { 2812 cnt = RD_REG_DWORD_RELAXED(req->req_q_out); 2813 2814 if (req->ring_index < cnt) 2815 req->cnt = cnt - req->ring_index; 2816 else 2817 req->cnt = req->length - 2818 (req->ring_index - cnt); 2819 } 2820 if (req->cnt < req_cnt + 2) { 2821 rval = EXT_STATUS_BUSY; 2822 goto queuing_error; 2823 } 2824 2825 cmd_pkt = (struct cmd_bidir *)req->ring_ptr; 2826 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 2827 2828 /* Zero out remaining portion of packet. */ 2829 /* tagged queuing modifier -- default is TSK_SIMPLE (0).*/ 2830 clr_ptr = (uint32_t *)cmd_pkt + 2; 2831 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 2832 2833 /* Set NPORT-ID (of vha)*/ 2834 cmd_pkt->nport_handle = cpu_to_le16(vha->self_login_loop_id); 2835 cmd_pkt->port_id[0] = vha->d_id.b.al_pa; 2836 cmd_pkt->port_id[1] = vha->d_id.b.area; 2837 cmd_pkt->port_id[2] = vha->d_id.b.domain; 2838 2839 qla25xx_build_bidir_iocb(sp, vha, cmd_pkt, tot_dsds); 2840 cmd_pkt->entry_status = (uint8_t) rsp->id; 2841 /* Build command packet. */ 2842 req->current_outstanding_cmd = handle; 2843 req->outstanding_cmds[handle] = sp; 2844 sp->handle = handle; 2845 req->cnt -= req_cnt; 2846 2847 /* Send the command to the firmware */ 2848 wmb(); 2849 qla2x00_start_iocbs(vha, req); 2850 queuing_error: 2851 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2852 return rval; 2853 } 2854