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_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) || IS_QLA27XX(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 uint64_t lun, uint8_t type) 524 { 525 mrk_entry_t *mrk; 526 struct mrk_entry_24xx *mrk24 = NULL; 527 528 struct qla_hw_data *ha = vha->hw; 529 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 530 531 req = ha->req_q_map[0]; 532 mrk = (mrk_entry_t *)qla2x00_alloc_iocbs(vha, NULL); 533 if (mrk == NULL) { 534 ql_log(ql_log_warn, base_vha, 0x3026, 535 "Failed to allocate Marker IOCB.\n"); 536 537 return (QLA_FUNCTION_FAILED); 538 } 539 540 mrk->entry_type = MARKER_TYPE; 541 mrk->modifier = type; 542 if (type != MK_SYNC_ALL) { 543 if (IS_FWI2_CAPABLE(ha)) { 544 mrk24 = (struct mrk_entry_24xx *) mrk; 545 mrk24->nport_handle = cpu_to_le16(loop_id); 546 int_to_scsilun(lun, (struct scsi_lun *)&mrk24->lun); 547 host_to_fcp_swap(mrk24->lun, sizeof(mrk24->lun)); 548 mrk24->vp_index = vha->vp_idx; 549 mrk24->handle = MAKE_HANDLE(req->id, mrk24->handle); 550 } else { 551 SET_TARGET_ID(ha, mrk->target, loop_id); 552 mrk->lun = cpu_to_le16((uint16_t)lun); 553 } 554 } 555 wmb(); 556 557 qla2x00_start_iocbs(vha, req); 558 559 return (QLA_SUCCESS); 560 } 561 562 int 563 qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req, 564 struct rsp_que *rsp, uint16_t loop_id, uint64_t lun, 565 uint8_t type) 566 { 567 int ret; 568 unsigned long flags = 0; 569 570 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 571 ret = __qla2x00_marker(vha, req, rsp, loop_id, lun, type); 572 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 573 574 return (ret); 575 } 576 577 /* 578 * qla2x00_issue_marker 579 * 580 * Issue marker 581 * Caller CAN have hardware lock held as specified by ha_locked parameter. 582 * Might release it, then reaquire. 583 */ 584 int qla2x00_issue_marker(scsi_qla_host_t *vha, int ha_locked) 585 { 586 if (ha_locked) { 587 if (__qla2x00_marker(vha, vha->req, vha->req->rsp, 0, 0, 588 MK_SYNC_ALL) != QLA_SUCCESS) 589 return QLA_FUNCTION_FAILED; 590 } else { 591 if (qla2x00_marker(vha, vha->req, vha->req->rsp, 0, 0, 592 MK_SYNC_ALL) != QLA_SUCCESS) 593 return QLA_FUNCTION_FAILED; 594 } 595 vha->marker_needed = 0; 596 597 return QLA_SUCCESS; 598 } 599 600 static inline int 601 qla24xx_build_scsi_type_6_iocbs(srb_t *sp, struct cmd_type_6 *cmd_pkt, 602 uint16_t tot_dsds) 603 { 604 uint32_t *cur_dsd = NULL; 605 scsi_qla_host_t *vha; 606 struct qla_hw_data *ha; 607 struct scsi_cmnd *cmd; 608 struct scatterlist *cur_seg; 609 uint32_t *dsd_seg; 610 void *next_dsd; 611 uint8_t avail_dsds; 612 uint8_t first_iocb = 1; 613 uint32_t dsd_list_len; 614 struct dsd_dma *dsd_ptr; 615 struct ct6_dsd *ctx; 616 617 cmd = GET_CMD_SP(sp); 618 619 /* Update entry type to indicate Command Type 3 IOCB */ 620 *((uint32_t *)(&cmd_pkt->entry_type)) = 621 __constant_cpu_to_le32(COMMAND_TYPE_6); 622 623 /* No data transfer */ 624 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) { 625 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 626 return 0; 627 } 628 629 vha = sp->fcport->vha; 630 ha = vha->hw; 631 632 /* Set transfer direction */ 633 if (cmd->sc_data_direction == DMA_TO_DEVICE) { 634 cmd_pkt->control_flags = 635 __constant_cpu_to_le16(CF_WRITE_DATA); 636 vha->qla_stats.output_bytes += scsi_bufflen(cmd); 637 vha->qla_stats.output_requests++; 638 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) { 639 cmd_pkt->control_flags = 640 __constant_cpu_to_le16(CF_READ_DATA); 641 vha->qla_stats.input_bytes += scsi_bufflen(cmd); 642 vha->qla_stats.input_requests++; 643 } 644 645 cur_seg = scsi_sglist(cmd); 646 ctx = GET_CMD_CTX_SP(sp); 647 648 while (tot_dsds) { 649 avail_dsds = (tot_dsds > QLA_DSDS_PER_IOCB) ? 650 QLA_DSDS_PER_IOCB : tot_dsds; 651 tot_dsds -= avail_dsds; 652 dsd_list_len = (avail_dsds + 1) * QLA_DSD_SIZE; 653 654 dsd_ptr = list_first_entry(&ha->gbl_dsd_list, 655 struct dsd_dma, list); 656 next_dsd = dsd_ptr->dsd_addr; 657 list_del(&dsd_ptr->list); 658 ha->gbl_dsd_avail--; 659 list_add_tail(&dsd_ptr->list, &ctx->dsd_list); 660 ctx->dsd_use_cnt++; 661 ha->gbl_dsd_inuse++; 662 663 if (first_iocb) { 664 first_iocb = 0; 665 dsd_seg = (uint32_t *)&cmd_pkt->fcp_data_dseg_address; 666 *dsd_seg++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 667 *dsd_seg++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 668 cmd_pkt->fcp_data_dseg_len = cpu_to_le32(dsd_list_len); 669 } else { 670 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 671 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 672 *cur_dsd++ = cpu_to_le32(dsd_list_len); 673 } 674 cur_dsd = (uint32_t *)next_dsd; 675 while (avail_dsds) { 676 dma_addr_t sle_dma; 677 678 sle_dma = sg_dma_address(cur_seg); 679 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 680 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 681 *cur_dsd++ = cpu_to_le32(sg_dma_len(cur_seg)); 682 cur_seg = sg_next(cur_seg); 683 avail_dsds--; 684 } 685 } 686 687 /* Null termination */ 688 *cur_dsd++ = 0; 689 *cur_dsd++ = 0; 690 *cur_dsd++ = 0; 691 cmd_pkt->control_flags |= CF_DATA_SEG_DESCR_ENABLE; 692 return 0; 693 } 694 695 /* 696 * qla24xx_calc_dsd_lists() - Determine number of DSD list required 697 * for Command Type 6. 698 * 699 * @dsds: number of data segment decriptors needed 700 * 701 * Returns the number of dsd list needed to store @dsds. 702 */ 703 inline uint16_t 704 qla24xx_calc_dsd_lists(uint16_t dsds) 705 { 706 uint16_t dsd_lists = 0; 707 708 dsd_lists = (dsds/QLA_DSDS_PER_IOCB); 709 if (dsds % QLA_DSDS_PER_IOCB) 710 dsd_lists++; 711 return dsd_lists; 712 } 713 714 715 /** 716 * qla24xx_build_scsi_iocbs() - Build IOCB command utilizing Command Type 7 717 * IOCB types. 718 * 719 * @sp: SRB command to process 720 * @cmd_pkt: Command type 3 IOCB 721 * @tot_dsds: Total number of segments to transfer 722 */ 723 inline void 724 qla24xx_build_scsi_iocbs(srb_t *sp, struct cmd_type_7 *cmd_pkt, 725 uint16_t tot_dsds) 726 { 727 uint16_t avail_dsds; 728 uint32_t *cur_dsd; 729 scsi_qla_host_t *vha; 730 struct scsi_cmnd *cmd; 731 struct scatterlist *sg; 732 int i; 733 struct req_que *req; 734 735 cmd = GET_CMD_SP(sp); 736 737 /* Update entry type to indicate Command Type 3 IOCB */ 738 *((uint32_t *)(&cmd_pkt->entry_type)) = 739 __constant_cpu_to_le32(COMMAND_TYPE_7); 740 741 /* No data transfer */ 742 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) { 743 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 744 return; 745 } 746 747 vha = sp->fcport->vha; 748 req = vha->req; 749 750 /* Set transfer direction */ 751 if (cmd->sc_data_direction == DMA_TO_DEVICE) { 752 cmd_pkt->task_mgmt_flags = 753 __constant_cpu_to_le16(TMF_WRITE_DATA); 754 vha->qla_stats.output_bytes += scsi_bufflen(cmd); 755 vha->qla_stats.output_requests++; 756 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) { 757 cmd_pkt->task_mgmt_flags = 758 __constant_cpu_to_le16(TMF_READ_DATA); 759 vha->qla_stats.input_bytes += scsi_bufflen(cmd); 760 vha->qla_stats.input_requests++; 761 } 762 763 /* One DSD is available in the Command Type 3 IOCB */ 764 avail_dsds = 1; 765 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address; 766 767 /* Load data segments */ 768 769 scsi_for_each_sg(cmd, sg, tot_dsds, i) { 770 dma_addr_t sle_dma; 771 cont_a64_entry_t *cont_pkt; 772 773 /* Allocate additional continuation packets? */ 774 if (avail_dsds == 0) { 775 /* 776 * Five DSDs are available in the Continuation 777 * Type 1 IOCB. 778 */ 779 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req); 780 cur_dsd = (uint32_t *)cont_pkt->dseg_0_address; 781 avail_dsds = 5; 782 } 783 784 sle_dma = sg_dma_address(sg); 785 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 786 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 787 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 788 avail_dsds--; 789 } 790 } 791 792 struct fw_dif_context { 793 uint32_t ref_tag; 794 uint16_t app_tag; 795 uint8_t ref_tag_mask[4]; /* Validation/Replacement Mask*/ 796 uint8_t app_tag_mask[2]; /* Validation/Replacement Mask*/ 797 }; 798 799 /* 800 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command 801 * 802 */ 803 static inline void 804 qla24xx_set_t10dif_tags(srb_t *sp, struct fw_dif_context *pkt, 805 unsigned int protcnt) 806 { 807 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 808 809 switch (scsi_get_prot_type(cmd)) { 810 case SCSI_PROT_DIF_TYPE0: 811 /* 812 * No check for ql2xenablehba_err_chk, as it would be an 813 * I/O error if hba tag generation is not done. 814 */ 815 pkt->ref_tag = cpu_to_le32((uint32_t) 816 (0xffffffff & scsi_get_lba(cmd))); 817 818 if (!qla2x00_hba_err_chk_enabled(sp)) 819 break; 820 821 pkt->ref_tag_mask[0] = 0xff; 822 pkt->ref_tag_mask[1] = 0xff; 823 pkt->ref_tag_mask[2] = 0xff; 824 pkt->ref_tag_mask[3] = 0xff; 825 break; 826 827 /* 828 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to 829 * match LBA in CDB + N 830 */ 831 case SCSI_PROT_DIF_TYPE2: 832 pkt->app_tag = __constant_cpu_to_le16(0); 833 pkt->app_tag_mask[0] = 0x0; 834 pkt->app_tag_mask[1] = 0x0; 835 836 pkt->ref_tag = cpu_to_le32((uint32_t) 837 (0xffffffff & scsi_get_lba(cmd))); 838 839 if (!qla2x00_hba_err_chk_enabled(sp)) 840 break; 841 842 /* enable ALL bytes of the ref tag */ 843 pkt->ref_tag_mask[0] = 0xff; 844 pkt->ref_tag_mask[1] = 0xff; 845 pkt->ref_tag_mask[2] = 0xff; 846 pkt->ref_tag_mask[3] = 0xff; 847 break; 848 849 /* For Type 3 protection: 16 bit GUARD only */ 850 case SCSI_PROT_DIF_TYPE3: 851 pkt->ref_tag_mask[0] = pkt->ref_tag_mask[1] = 852 pkt->ref_tag_mask[2] = pkt->ref_tag_mask[3] = 853 0x00; 854 break; 855 856 /* 857 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and 858 * 16 bit app tag. 859 */ 860 case SCSI_PROT_DIF_TYPE1: 861 pkt->ref_tag = cpu_to_le32((uint32_t) 862 (0xffffffff & scsi_get_lba(cmd))); 863 pkt->app_tag = __constant_cpu_to_le16(0); 864 pkt->app_tag_mask[0] = 0x0; 865 pkt->app_tag_mask[1] = 0x0; 866 867 if (!qla2x00_hba_err_chk_enabled(sp)) 868 break; 869 870 /* enable ALL bytes of the ref tag */ 871 pkt->ref_tag_mask[0] = 0xff; 872 pkt->ref_tag_mask[1] = 0xff; 873 pkt->ref_tag_mask[2] = 0xff; 874 pkt->ref_tag_mask[3] = 0xff; 875 break; 876 } 877 } 878 879 struct qla2_sgx { 880 dma_addr_t dma_addr; /* OUT */ 881 uint32_t dma_len; /* OUT */ 882 883 uint32_t tot_bytes; /* IN */ 884 struct scatterlist *cur_sg; /* IN */ 885 886 /* for book keeping, bzero on initial invocation */ 887 uint32_t bytes_consumed; 888 uint32_t num_bytes; 889 uint32_t tot_partial; 890 891 /* for debugging */ 892 uint32_t num_sg; 893 srb_t *sp; 894 }; 895 896 static int 897 qla24xx_get_one_block_sg(uint32_t blk_sz, struct qla2_sgx *sgx, 898 uint32_t *partial) 899 { 900 struct scatterlist *sg; 901 uint32_t cumulative_partial, sg_len; 902 dma_addr_t sg_dma_addr; 903 904 if (sgx->num_bytes == sgx->tot_bytes) 905 return 0; 906 907 sg = sgx->cur_sg; 908 cumulative_partial = sgx->tot_partial; 909 910 sg_dma_addr = sg_dma_address(sg); 911 sg_len = sg_dma_len(sg); 912 913 sgx->dma_addr = sg_dma_addr + sgx->bytes_consumed; 914 915 if ((cumulative_partial + (sg_len - sgx->bytes_consumed)) >= blk_sz) { 916 sgx->dma_len = (blk_sz - cumulative_partial); 917 sgx->tot_partial = 0; 918 sgx->num_bytes += blk_sz; 919 *partial = 0; 920 } else { 921 sgx->dma_len = sg_len - sgx->bytes_consumed; 922 sgx->tot_partial += sgx->dma_len; 923 *partial = 1; 924 } 925 926 sgx->bytes_consumed += sgx->dma_len; 927 928 if (sg_len == sgx->bytes_consumed) { 929 sg = sg_next(sg); 930 sgx->num_sg++; 931 sgx->cur_sg = sg; 932 sgx->bytes_consumed = 0; 933 } 934 935 return 1; 936 } 937 938 int 939 qla24xx_walk_and_build_sglist_no_difb(struct qla_hw_data *ha, srb_t *sp, 940 uint32_t *dsd, uint16_t tot_dsds, struct qla_tgt_cmd *tc) 941 { 942 void *next_dsd; 943 uint8_t avail_dsds = 0; 944 uint32_t dsd_list_len; 945 struct dsd_dma *dsd_ptr; 946 struct scatterlist *sg_prot; 947 uint32_t *cur_dsd = dsd; 948 uint16_t used_dsds = tot_dsds; 949 950 uint32_t prot_int; /* protection interval */ 951 uint32_t partial; 952 struct qla2_sgx sgx; 953 dma_addr_t sle_dma; 954 uint32_t sle_dma_len, tot_prot_dma_len = 0; 955 struct scsi_cmnd *cmd; 956 struct scsi_qla_host *vha; 957 958 memset(&sgx, 0, sizeof(struct qla2_sgx)); 959 if (sp) { 960 vha = sp->fcport->vha; 961 cmd = GET_CMD_SP(sp); 962 prot_int = cmd->device->sector_size; 963 964 sgx.tot_bytes = scsi_bufflen(cmd); 965 sgx.cur_sg = scsi_sglist(cmd); 966 sgx.sp = sp; 967 968 sg_prot = scsi_prot_sglist(cmd); 969 } else if (tc) { 970 vha = tc->vha; 971 prot_int = tc->blk_sz; 972 sgx.tot_bytes = tc->bufflen; 973 sgx.cur_sg = tc->sg; 974 sg_prot = tc->prot_sg; 975 } else { 976 BUG(); 977 return 1; 978 } 979 980 while (qla24xx_get_one_block_sg(prot_int, &sgx, &partial)) { 981 982 sle_dma = sgx.dma_addr; 983 sle_dma_len = sgx.dma_len; 984 alloc_and_fill: 985 /* Allocate additional continuation packets? */ 986 if (avail_dsds == 0) { 987 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ? 988 QLA_DSDS_PER_IOCB : used_dsds; 989 dsd_list_len = (avail_dsds + 1) * 12; 990 used_dsds -= avail_dsds; 991 992 /* allocate tracking DS */ 993 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC); 994 if (!dsd_ptr) 995 return 1; 996 997 /* allocate new list */ 998 dsd_ptr->dsd_addr = next_dsd = 999 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, 1000 &dsd_ptr->dsd_list_dma); 1001 1002 if (!next_dsd) { 1003 /* 1004 * Need to cleanup only this dsd_ptr, rest 1005 * will be done by sp_free_dma() 1006 */ 1007 kfree(dsd_ptr); 1008 return 1; 1009 } 1010 1011 if (sp) { 1012 list_add_tail(&dsd_ptr->list, 1013 &((struct crc_context *) 1014 sp->u.scmd.ctx)->dsd_list); 1015 1016 sp->flags |= SRB_CRC_CTX_DSD_VALID; 1017 } else { 1018 list_add_tail(&dsd_ptr->list, 1019 &(tc->ctx->dsd_list)); 1020 tc->ctx_dsd_alloced = 1; 1021 } 1022 1023 1024 /* add new list to cmd iocb or last list */ 1025 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 1026 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 1027 *cur_dsd++ = dsd_list_len; 1028 cur_dsd = (uint32_t *)next_dsd; 1029 } 1030 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 1031 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 1032 *cur_dsd++ = cpu_to_le32(sle_dma_len); 1033 avail_dsds--; 1034 1035 if (partial == 0) { 1036 /* Got a full protection interval */ 1037 sle_dma = sg_dma_address(sg_prot) + tot_prot_dma_len; 1038 sle_dma_len = 8; 1039 1040 tot_prot_dma_len += sle_dma_len; 1041 if (tot_prot_dma_len == sg_dma_len(sg_prot)) { 1042 tot_prot_dma_len = 0; 1043 sg_prot = sg_next(sg_prot); 1044 } 1045 1046 partial = 1; /* So as to not re-enter this block */ 1047 goto alloc_and_fill; 1048 } 1049 } 1050 /* Null termination */ 1051 *cur_dsd++ = 0; 1052 *cur_dsd++ = 0; 1053 *cur_dsd++ = 0; 1054 return 0; 1055 } 1056 1057 int 1058 qla24xx_walk_and_build_sglist(struct qla_hw_data *ha, srb_t *sp, uint32_t *dsd, 1059 uint16_t tot_dsds, struct qla_tgt_cmd *tc) 1060 { 1061 void *next_dsd; 1062 uint8_t avail_dsds = 0; 1063 uint32_t dsd_list_len; 1064 struct dsd_dma *dsd_ptr; 1065 struct scatterlist *sg, *sgl; 1066 uint32_t *cur_dsd = dsd; 1067 int i; 1068 uint16_t used_dsds = tot_dsds; 1069 struct scsi_cmnd *cmd; 1070 struct scsi_qla_host *vha; 1071 1072 if (sp) { 1073 cmd = GET_CMD_SP(sp); 1074 sgl = scsi_sglist(cmd); 1075 vha = sp->fcport->vha; 1076 } else if (tc) { 1077 sgl = tc->sg; 1078 vha = tc->vha; 1079 } else { 1080 BUG(); 1081 return 1; 1082 } 1083 1084 1085 for_each_sg(sgl, sg, tot_dsds, i) { 1086 dma_addr_t sle_dma; 1087 1088 /* Allocate additional continuation packets? */ 1089 if (avail_dsds == 0) { 1090 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ? 1091 QLA_DSDS_PER_IOCB : used_dsds; 1092 dsd_list_len = (avail_dsds + 1) * 12; 1093 used_dsds -= avail_dsds; 1094 1095 /* allocate tracking DS */ 1096 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC); 1097 if (!dsd_ptr) 1098 return 1; 1099 1100 /* allocate new list */ 1101 dsd_ptr->dsd_addr = next_dsd = 1102 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, 1103 &dsd_ptr->dsd_list_dma); 1104 1105 if (!next_dsd) { 1106 /* 1107 * Need to cleanup only this dsd_ptr, rest 1108 * will be done by sp_free_dma() 1109 */ 1110 kfree(dsd_ptr); 1111 return 1; 1112 } 1113 1114 if (sp) { 1115 list_add_tail(&dsd_ptr->list, 1116 &((struct crc_context *) 1117 sp->u.scmd.ctx)->dsd_list); 1118 1119 sp->flags |= SRB_CRC_CTX_DSD_VALID; 1120 } else { 1121 list_add_tail(&dsd_ptr->list, 1122 &(tc->ctx->dsd_list)); 1123 tc->ctx_dsd_alloced = 1; 1124 } 1125 1126 /* add new list to cmd iocb or last list */ 1127 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 1128 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 1129 *cur_dsd++ = dsd_list_len; 1130 cur_dsd = (uint32_t *)next_dsd; 1131 } 1132 sle_dma = sg_dma_address(sg); 1133 1134 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 1135 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 1136 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 1137 avail_dsds--; 1138 1139 } 1140 /* Null termination */ 1141 *cur_dsd++ = 0; 1142 *cur_dsd++ = 0; 1143 *cur_dsd++ = 0; 1144 return 0; 1145 } 1146 1147 int 1148 qla24xx_walk_and_build_prot_sglist(struct qla_hw_data *ha, srb_t *sp, 1149 uint32_t *dsd, uint16_t tot_dsds, struct qla_tgt_cmd *tc) 1150 { 1151 void *next_dsd; 1152 uint8_t avail_dsds = 0; 1153 uint32_t dsd_list_len; 1154 struct dsd_dma *dsd_ptr; 1155 struct scatterlist *sg, *sgl; 1156 int i; 1157 struct scsi_cmnd *cmd; 1158 uint32_t *cur_dsd = dsd; 1159 uint16_t used_dsds = tot_dsds; 1160 struct scsi_qla_host *vha; 1161 1162 if (sp) { 1163 cmd = GET_CMD_SP(sp); 1164 sgl = scsi_prot_sglist(cmd); 1165 vha = sp->fcport->vha; 1166 } else if (tc) { 1167 vha = tc->vha; 1168 sgl = tc->prot_sg; 1169 } else { 1170 BUG(); 1171 return 1; 1172 } 1173 1174 ql_dbg(ql_dbg_tgt, vha, 0xe021, 1175 "%s: enter\n", __func__); 1176 1177 for_each_sg(sgl, sg, tot_dsds, i) { 1178 dma_addr_t sle_dma; 1179 1180 /* Allocate additional continuation packets? */ 1181 if (avail_dsds == 0) { 1182 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ? 1183 QLA_DSDS_PER_IOCB : used_dsds; 1184 dsd_list_len = (avail_dsds + 1) * 12; 1185 used_dsds -= avail_dsds; 1186 1187 /* allocate tracking DS */ 1188 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC); 1189 if (!dsd_ptr) 1190 return 1; 1191 1192 /* allocate new list */ 1193 dsd_ptr->dsd_addr = next_dsd = 1194 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, 1195 &dsd_ptr->dsd_list_dma); 1196 1197 if (!next_dsd) { 1198 /* 1199 * Need to cleanup only this dsd_ptr, rest 1200 * will be done by sp_free_dma() 1201 */ 1202 kfree(dsd_ptr); 1203 return 1; 1204 } 1205 1206 if (sp) { 1207 list_add_tail(&dsd_ptr->list, 1208 &((struct crc_context *) 1209 sp->u.scmd.ctx)->dsd_list); 1210 1211 sp->flags |= SRB_CRC_CTX_DSD_VALID; 1212 } else { 1213 list_add_tail(&dsd_ptr->list, 1214 &(tc->ctx->dsd_list)); 1215 tc->ctx_dsd_alloced = 1; 1216 } 1217 1218 /* add new list to cmd iocb or last list */ 1219 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 1220 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 1221 *cur_dsd++ = dsd_list_len; 1222 cur_dsd = (uint32_t *)next_dsd; 1223 } 1224 sle_dma = sg_dma_address(sg); 1225 1226 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 1227 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 1228 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 1229 1230 avail_dsds--; 1231 } 1232 /* Null termination */ 1233 *cur_dsd++ = 0; 1234 *cur_dsd++ = 0; 1235 *cur_dsd++ = 0; 1236 return 0; 1237 } 1238 1239 /** 1240 * qla24xx_build_scsi_crc_2_iocbs() - Build IOCB command utilizing Command 1241 * Type 6 IOCB types. 1242 * 1243 * @sp: SRB command to process 1244 * @cmd_pkt: Command type 3 IOCB 1245 * @tot_dsds: Total number of segments to transfer 1246 */ 1247 static inline int 1248 qla24xx_build_scsi_crc_2_iocbs(srb_t *sp, struct cmd_type_crc_2 *cmd_pkt, 1249 uint16_t tot_dsds, uint16_t tot_prot_dsds, uint16_t fw_prot_opts) 1250 { 1251 uint32_t *cur_dsd, *fcp_dl; 1252 scsi_qla_host_t *vha; 1253 struct scsi_cmnd *cmd; 1254 int sgc; 1255 uint32_t total_bytes = 0; 1256 uint32_t data_bytes; 1257 uint32_t dif_bytes; 1258 uint8_t bundling = 1; 1259 uint16_t blk_size; 1260 uint8_t *clr_ptr; 1261 struct crc_context *crc_ctx_pkt = NULL; 1262 struct qla_hw_data *ha; 1263 uint8_t additional_fcpcdb_len; 1264 uint16_t fcp_cmnd_len; 1265 struct fcp_cmnd *fcp_cmnd; 1266 dma_addr_t crc_ctx_dma; 1267 char tag[2]; 1268 1269 cmd = GET_CMD_SP(sp); 1270 1271 sgc = 0; 1272 /* Update entry type to indicate Command Type CRC_2 IOCB */ 1273 *((uint32_t *)(&cmd_pkt->entry_type)) = 1274 __constant_cpu_to_le32(COMMAND_TYPE_CRC_2); 1275 1276 vha = sp->fcport->vha; 1277 ha = vha->hw; 1278 1279 /* No data transfer */ 1280 data_bytes = scsi_bufflen(cmd); 1281 if (!data_bytes || cmd->sc_data_direction == DMA_NONE) { 1282 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 1283 return QLA_SUCCESS; 1284 } 1285 1286 cmd_pkt->vp_index = sp->fcport->vha->vp_idx; 1287 1288 /* Set transfer direction */ 1289 if (cmd->sc_data_direction == DMA_TO_DEVICE) { 1290 cmd_pkt->control_flags = 1291 __constant_cpu_to_le16(CF_WRITE_DATA); 1292 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) { 1293 cmd_pkt->control_flags = 1294 __constant_cpu_to_le16(CF_READ_DATA); 1295 } 1296 1297 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) || 1298 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP) || 1299 (scsi_get_prot_op(cmd) == SCSI_PROT_READ_STRIP) || 1300 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_INSERT)) 1301 bundling = 0; 1302 1303 /* Allocate CRC context from global pool */ 1304 crc_ctx_pkt = sp->u.scmd.ctx = 1305 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 1306 1307 if (!crc_ctx_pkt) 1308 goto crc_queuing_error; 1309 1310 /* Zero out CTX area. */ 1311 clr_ptr = (uint8_t *)crc_ctx_pkt; 1312 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt)); 1313 1314 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 1315 1316 sp->flags |= SRB_CRC_CTX_DMA_VALID; 1317 1318 /* Set handle */ 1319 crc_ctx_pkt->handle = cmd_pkt->handle; 1320 1321 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 1322 1323 qla24xx_set_t10dif_tags(sp, (struct fw_dif_context *) 1324 &crc_ctx_pkt->ref_tag, tot_prot_dsds); 1325 1326 cmd_pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma)); 1327 cmd_pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma)); 1328 cmd_pkt->crc_context_len = CRC_CONTEXT_LEN_FW; 1329 1330 /* Determine SCSI command length -- align to 4 byte boundary */ 1331 if (cmd->cmd_len > 16) { 1332 additional_fcpcdb_len = cmd->cmd_len - 16; 1333 if ((cmd->cmd_len % 4) != 0) { 1334 /* SCSI cmd > 16 bytes must be multiple of 4 */ 1335 goto crc_queuing_error; 1336 } 1337 fcp_cmnd_len = 12 + cmd->cmd_len + 4; 1338 } else { 1339 additional_fcpcdb_len = 0; 1340 fcp_cmnd_len = 12 + 16 + 4; 1341 } 1342 1343 fcp_cmnd = &crc_ctx_pkt->fcp_cmnd; 1344 1345 fcp_cmnd->additional_cdb_len = additional_fcpcdb_len; 1346 if (cmd->sc_data_direction == DMA_TO_DEVICE) 1347 fcp_cmnd->additional_cdb_len |= 1; 1348 else if (cmd->sc_data_direction == DMA_FROM_DEVICE) 1349 fcp_cmnd->additional_cdb_len |= 2; 1350 1351 int_to_scsilun(cmd->device->lun, &fcp_cmnd->lun); 1352 memcpy(fcp_cmnd->cdb, cmd->cmnd, cmd->cmd_len); 1353 cmd_pkt->fcp_cmnd_dseg_len = cpu_to_le16(fcp_cmnd_len); 1354 cmd_pkt->fcp_cmnd_dseg_address[0] = cpu_to_le32( 1355 LSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF)); 1356 cmd_pkt->fcp_cmnd_dseg_address[1] = cpu_to_le32( 1357 MSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF)); 1358 fcp_cmnd->task_management = 0; 1359 1360 /* 1361 * Update tagged queuing modifier if using command tag queuing 1362 */ 1363 if (scsi_populate_tag_msg(cmd, tag)) { 1364 switch (tag[0]) { 1365 case HEAD_OF_QUEUE_TAG: 1366 fcp_cmnd->task_attribute = TSK_HEAD_OF_QUEUE; 1367 break; 1368 case ORDERED_QUEUE_TAG: 1369 fcp_cmnd->task_attribute = TSK_ORDERED; 1370 break; 1371 default: 1372 fcp_cmnd->task_attribute = TSK_SIMPLE; 1373 break; 1374 } 1375 } else { 1376 fcp_cmnd->task_attribute = TSK_SIMPLE; 1377 } 1378 1379 cmd_pkt->fcp_rsp_dseg_len = 0; /* Let response come in status iocb */ 1380 1381 /* Compute dif len and adjust data len to incude protection */ 1382 dif_bytes = 0; 1383 blk_size = cmd->device->sector_size; 1384 dif_bytes = (data_bytes / blk_size) * 8; 1385 1386 switch (scsi_get_prot_op(GET_CMD_SP(sp))) { 1387 case SCSI_PROT_READ_INSERT: 1388 case SCSI_PROT_WRITE_STRIP: 1389 total_bytes = data_bytes; 1390 data_bytes += dif_bytes; 1391 break; 1392 1393 case SCSI_PROT_READ_STRIP: 1394 case SCSI_PROT_WRITE_INSERT: 1395 case SCSI_PROT_READ_PASS: 1396 case SCSI_PROT_WRITE_PASS: 1397 total_bytes = data_bytes + dif_bytes; 1398 break; 1399 default: 1400 BUG(); 1401 } 1402 1403 if (!qla2x00_hba_err_chk_enabled(sp)) 1404 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 1405 /* HBA error checking enabled */ 1406 else if (IS_PI_UNINIT_CAPABLE(ha)) { 1407 if ((scsi_get_prot_type(GET_CMD_SP(sp)) == SCSI_PROT_DIF_TYPE1) 1408 || (scsi_get_prot_type(GET_CMD_SP(sp)) == 1409 SCSI_PROT_DIF_TYPE2)) 1410 fw_prot_opts |= BIT_10; 1411 else if (scsi_get_prot_type(GET_CMD_SP(sp)) == 1412 SCSI_PROT_DIF_TYPE3) 1413 fw_prot_opts |= BIT_11; 1414 } 1415 1416 if (!bundling) { 1417 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address; 1418 } else { 1419 /* 1420 * Configure Bundling if we need to fetch interlaving 1421 * protection PCI accesses 1422 */ 1423 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 1424 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 1425 crc_ctx_pkt->u.bundling.dseg_count = cpu_to_le16(tot_dsds - 1426 tot_prot_dsds); 1427 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address; 1428 } 1429 1430 /* Finish the common fields of CRC pkt */ 1431 crc_ctx_pkt->blk_size = cpu_to_le16(blk_size); 1432 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 1433 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 1434 crc_ctx_pkt->guard_seed = __constant_cpu_to_le16(0); 1435 /* Fibre channel byte count */ 1436 cmd_pkt->byte_count = cpu_to_le32(total_bytes); 1437 fcp_dl = (uint32_t *)(crc_ctx_pkt->fcp_cmnd.cdb + 16 + 1438 additional_fcpcdb_len); 1439 *fcp_dl = htonl(total_bytes); 1440 1441 if (!data_bytes || cmd->sc_data_direction == DMA_NONE) { 1442 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 1443 return QLA_SUCCESS; 1444 } 1445 /* Walks data segments */ 1446 1447 cmd_pkt->control_flags |= 1448 __constant_cpu_to_le16(CF_DATA_SEG_DESCR_ENABLE); 1449 1450 if (!bundling && tot_prot_dsds) { 1451 if (qla24xx_walk_and_build_sglist_no_difb(ha, sp, 1452 cur_dsd, tot_dsds, NULL)) 1453 goto crc_queuing_error; 1454 } else if (qla24xx_walk_and_build_sglist(ha, sp, cur_dsd, 1455 (tot_dsds - tot_prot_dsds), NULL)) 1456 goto crc_queuing_error; 1457 1458 if (bundling && tot_prot_dsds) { 1459 /* Walks dif segments */ 1460 cmd_pkt->control_flags |= 1461 __constant_cpu_to_le16(CF_DIF_SEG_DESCR_ENABLE); 1462 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address; 1463 if (qla24xx_walk_and_build_prot_sglist(ha, sp, cur_dsd, 1464 tot_prot_dsds, NULL)) 1465 goto crc_queuing_error; 1466 } 1467 return QLA_SUCCESS; 1468 1469 crc_queuing_error: 1470 /* Cleanup will be performed by the caller */ 1471 1472 return QLA_FUNCTION_FAILED; 1473 } 1474 1475 /** 1476 * qla24xx_start_scsi() - Send a SCSI command to the ISP 1477 * @sp: command to send to the ISP 1478 * 1479 * Returns non-zero if a failure occurred, else zero. 1480 */ 1481 int 1482 qla24xx_start_scsi(srb_t *sp) 1483 { 1484 int ret, nseg; 1485 unsigned long flags; 1486 uint32_t *clr_ptr; 1487 uint32_t index; 1488 uint32_t handle; 1489 struct cmd_type_7 *cmd_pkt; 1490 uint16_t cnt; 1491 uint16_t req_cnt; 1492 uint16_t tot_dsds; 1493 struct req_que *req = NULL; 1494 struct rsp_que *rsp = NULL; 1495 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 1496 struct scsi_qla_host *vha = sp->fcport->vha; 1497 struct qla_hw_data *ha = vha->hw; 1498 char tag[2]; 1499 1500 /* Setup device pointers. */ 1501 ret = 0; 1502 1503 qla25xx_set_que(sp, &rsp); 1504 req = vha->req; 1505 1506 /* So we know we haven't pci_map'ed anything yet */ 1507 tot_dsds = 0; 1508 1509 /* Send marker if required */ 1510 if (vha->marker_needed != 0) { 1511 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) != 1512 QLA_SUCCESS) 1513 return QLA_FUNCTION_FAILED; 1514 vha->marker_needed = 0; 1515 } 1516 1517 /* Acquire ring specific lock */ 1518 spin_lock_irqsave(&ha->hardware_lock, flags); 1519 1520 /* Check for room in outstanding command list. */ 1521 handle = req->current_outstanding_cmd; 1522 for (index = 1; index < req->num_outstanding_cmds; index++) { 1523 handle++; 1524 if (handle == req->num_outstanding_cmds) 1525 handle = 1; 1526 if (!req->outstanding_cmds[handle]) 1527 break; 1528 } 1529 if (index == req->num_outstanding_cmds) 1530 goto queuing_error; 1531 1532 /* Map the sg table so we have an accurate count of sg entries needed */ 1533 if (scsi_sg_count(cmd)) { 1534 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd), 1535 scsi_sg_count(cmd), cmd->sc_data_direction); 1536 if (unlikely(!nseg)) 1537 goto queuing_error; 1538 } else 1539 nseg = 0; 1540 1541 tot_dsds = nseg; 1542 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds); 1543 if (req->cnt < (req_cnt + 2)) { 1544 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr : 1545 RD_REG_DWORD_RELAXED(req->req_q_out); 1546 if (req->ring_index < cnt) 1547 req->cnt = cnt - req->ring_index; 1548 else 1549 req->cnt = req->length - 1550 (req->ring_index - cnt); 1551 if (req->cnt < (req_cnt + 2)) 1552 goto queuing_error; 1553 } 1554 1555 /* Build command packet. */ 1556 req->current_outstanding_cmd = handle; 1557 req->outstanding_cmds[handle] = sp; 1558 sp->handle = handle; 1559 cmd->host_scribble = (unsigned char *)(unsigned long)handle; 1560 req->cnt -= req_cnt; 1561 1562 cmd_pkt = (struct cmd_type_7 *)req->ring_ptr; 1563 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 1564 1565 /* Zero out remaining portion of packet. */ 1566 /* tagged queuing modifier -- default is TSK_SIMPLE (0). */ 1567 clr_ptr = (uint32_t *)cmd_pkt + 2; 1568 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 1569 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 1570 1571 /* Set NPORT-ID and LUN number*/ 1572 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1573 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; 1574 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; 1575 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; 1576 cmd_pkt->vp_index = sp->fcport->vha->vp_idx; 1577 1578 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun); 1579 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun)); 1580 1581 /* Update tagged queuing modifier -- default is TSK_SIMPLE (0). */ 1582 if (scsi_populate_tag_msg(cmd, tag)) { 1583 switch (tag[0]) { 1584 case HEAD_OF_QUEUE_TAG: 1585 cmd_pkt->task = TSK_HEAD_OF_QUEUE; 1586 break; 1587 case ORDERED_QUEUE_TAG: 1588 cmd_pkt->task = TSK_ORDERED; 1589 break; 1590 default: 1591 cmd_pkt->task = TSK_SIMPLE; 1592 break; 1593 } 1594 } else { 1595 cmd_pkt->task = TSK_SIMPLE; 1596 } 1597 1598 /* Load SCSI command packet. */ 1599 memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len); 1600 host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb)); 1601 1602 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); 1603 1604 /* Build IOCB segments */ 1605 qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds); 1606 1607 /* Set total data segment count. */ 1608 cmd_pkt->entry_count = (uint8_t)req_cnt; 1609 /* Specify response queue number where completion should happen */ 1610 cmd_pkt->entry_status = (uint8_t) rsp->id; 1611 wmb(); 1612 /* Adjust ring index. */ 1613 req->ring_index++; 1614 if (req->ring_index == req->length) { 1615 req->ring_index = 0; 1616 req->ring_ptr = req->ring; 1617 } else 1618 req->ring_ptr++; 1619 1620 sp->flags |= SRB_DMA_VALID; 1621 1622 /* Set chip new ring index. */ 1623 WRT_REG_DWORD(req->req_q_in, req->ring_index); 1624 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr); 1625 1626 /* Manage unprocessed RIO/ZIO commands in response queue. */ 1627 if (vha->flags.process_response_queue && 1628 rsp->ring_ptr->signature != RESPONSE_PROCESSED) 1629 qla24xx_process_response_queue(vha, rsp); 1630 1631 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1632 return QLA_SUCCESS; 1633 1634 queuing_error: 1635 if (tot_dsds) 1636 scsi_dma_unmap(cmd); 1637 1638 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1639 1640 return QLA_FUNCTION_FAILED; 1641 } 1642 1643 /** 1644 * qla24xx_dif_start_scsi() - Send a SCSI command to the ISP 1645 * @sp: command to send to the ISP 1646 * 1647 * Returns non-zero if a failure occurred, else zero. 1648 */ 1649 int 1650 qla24xx_dif_start_scsi(srb_t *sp) 1651 { 1652 int nseg; 1653 unsigned long flags; 1654 uint32_t *clr_ptr; 1655 uint32_t index; 1656 uint32_t handle; 1657 uint16_t cnt; 1658 uint16_t req_cnt = 0; 1659 uint16_t tot_dsds; 1660 uint16_t tot_prot_dsds; 1661 uint16_t fw_prot_opts = 0; 1662 struct req_que *req = NULL; 1663 struct rsp_que *rsp = NULL; 1664 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 1665 struct scsi_qla_host *vha = sp->fcport->vha; 1666 struct qla_hw_data *ha = vha->hw; 1667 struct cmd_type_crc_2 *cmd_pkt; 1668 uint32_t status = 0; 1669 1670 #define QDSS_GOT_Q_SPACE BIT_0 1671 1672 /* Only process protection or >16 cdb in this routine */ 1673 if (scsi_get_prot_op(cmd) == SCSI_PROT_NORMAL) { 1674 if (cmd->cmd_len <= 16) 1675 return qla24xx_start_scsi(sp); 1676 } 1677 1678 /* Setup device pointers. */ 1679 1680 qla25xx_set_que(sp, &rsp); 1681 req = vha->req; 1682 1683 /* So we know we haven't pci_map'ed anything yet */ 1684 tot_dsds = 0; 1685 1686 /* Send marker if required */ 1687 if (vha->marker_needed != 0) { 1688 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) != 1689 QLA_SUCCESS) 1690 return QLA_FUNCTION_FAILED; 1691 vha->marker_needed = 0; 1692 } 1693 1694 /* Acquire ring specific lock */ 1695 spin_lock_irqsave(&ha->hardware_lock, flags); 1696 1697 /* Check for room in outstanding command list. */ 1698 handle = req->current_outstanding_cmd; 1699 for (index = 1; index < req->num_outstanding_cmds; index++) { 1700 handle++; 1701 if (handle == req->num_outstanding_cmds) 1702 handle = 1; 1703 if (!req->outstanding_cmds[handle]) 1704 break; 1705 } 1706 1707 if (index == req->num_outstanding_cmds) 1708 goto queuing_error; 1709 1710 /* Compute number of required data segments */ 1711 /* Map the sg table so we have an accurate count of sg entries needed */ 1712 if (scsi_sg_count(cmd)) { 1713 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd), 1714 scsi_sg_count(cmd), cmd->sc_data_direction); 1715 if (unlikely(!nseg)) 1716 goto queuing_error; 1717 else 1718 sp->flags |= SRB_DMA_VALID; 1719 1720 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) || 1721 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) { 1722 struct qla2_sgx sgx; 1723 uint32_t partial; 1724 1725 memset(&sgx, 0, sizeof(struct qla2_sgx)); 1726 sgx.tot_bytes = scsi_bufflen(cmd); 1727 sgx.cur_sg = scsi_sglist(cmd); 1728 sgx.sp = sp; 1729 1730 nseg = 0; 1731 while (qla24xx_get_one_block_sg( 1732 cmd->device->sector_size, &sgx, &partial)) 1733 nseg++; 1734 } 1735 } else 1736 nseg = 0; 1737 1738 /* number of required data segments */ 1739 tot_dsds = nseg; 1740 1741 /* Compute number of required protection segments */ 1742 if (qla24xx_configure_prot_mode(sp, &fw_prot_opts)) { 1743 nseg = dma_map_sg(&ha->pdev->dev, scsi_prot_sglist(cmd), 1744 scsi_prot_sg_count(cmd), cmd->sc_data_direction); 1745 if (unlikely(!nseg)) 1746 goto queuing_error; 1747 else 1748 sp->flags |= SRB_CRC_PROT_DMA_VALID; 1749 1750 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) || 1751 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) { 1752 nseg = scsi_bufflen(cmd) / cmd->device->sector_size; 1753 } 1754 } else { 1755 nseg = 0; 1756 } 1757 1758 req_cnt = 1; 1759 /* Total Data and protection sg segment(s) */ 1760 tot_prot_dsds = nseg; 1761 tot_dsds += nseg; 1762 if (req->cnt < (req_cnt + 2)) { 1763 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr : 1764 RD_REG_DWORD_RELAXED(req->req_q_out); 1765 if (req->ring_index < cnt) 1766 req->cnt = cnt - req->ring_index; 1767 else 1768 req->cnt = req->length - 1769 (req->ring_index - cnt); 1770 if (req->cnt < (req_cnt + 2)) 1771 goto queuing_error; 1772 } 1773 1774 status |= QDSS_GOT_Q_SPACE; 1775 1776 /* Build header part of command packet (excluding the OPCODE). */ 1777 req->current_outstanding_cmd = handle; 1778 req->outstanding_cmds[handle] = sp; 1779 sp->handle = handle; 1780 cmd->host_scribble = (unsigned char *)(unsigned long)handle; 1781 req->cnt -= req_cnt; 1782 1783 /* Fill-in common area */ 1784 cmd_pkt = (struct cmd_type_crc_2 *)req->ring_ptr; 1785 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 1786 1787 clr_ptr = (uint32_t *)cmd_pkt + 2; 1788 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 1789 1790 /* Set NPORT-ID and LUN number*/ 1791 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1792 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; 1793 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; 1794 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; 1795 1796 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun); 1797 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun)); 1798 1799 /* Total Data and protection segment(s) */ 1800 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 1801 1802 /* Build IOCB segments and adjust for data protection segments */ 1803 if (qla24xx_build_scsi_crc_2_iocbs(sp, (struct cmd_type_crc_2 *) 1804 req->ring_ptr, tot_dsds, tot_prot_dsds, fw_prot_opts) != 1805 QLA_SUCCESS) 1806 goto queuing_error; 1807 1808 cmd_pkt->entry_count = (uint8_t)req_cnt; 1809 /* Specify response queue number where completion should happen */ 1810 cmd_pkt->entry_status = (uint8_t) rsp->id; 1811 cmd_pkt->timeout = __constant_cpu_to_le16(0); 1812 wmb(); 1813 1814 /* Adjust ring index. */ 1815 req->ring_index++; 1816 if (req->ring_index == req->length) { 1817 req->ring_index = 0; 1818 req->ring_ptr = req->ring; 1819 } else 1820 req->ring_ptr++; 1821 1822 /* Set chip new ring index. */ 1823 WRT_REG_DWORD(req->req_q_in, req->ring_index); 1824 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr); 1825 1826 /* Manage unprocessed RIO/ZIO commands in response queue. */ 1827 if (vha->flags.process_response_queue && 1828 rsp->ring_ptr->signature != RESPONSE_PROCESSED) 1829 qla24xx_process_response_queue(vha, rsp); 1830 1831 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1832 1833 return QLA_SUCCESS; 1834 1835 queuing_error: 1836 if (status & QDSS_GOT_Q_SPACE) { 1837 req->outstanding_cmds[handle] = NULL; 1838 req->cnt += req_cnt; 1839 } 1840 /* Cleanup will be performed by the caller (queuecommand) */ 1841 1842 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1843 return QLA_FUNCTION_FAILED; 1844 } 1845 1846 1847 static void qla25xx_set_que(srb_t *sp, struct rsp_que **rsp) 1848 { 1849 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 1850 struct qla_hw_data *ha = sp->fcport->vha->hw; 1851 int affinity = cmd->request->cpu; 1852 1853 if (ha->flags.cpu_affinity_enabled && affinity >= 0 && 1854 affinity < ha->max_rsp_queues - 1) 1855 *rsp = ha->rsp_q_map[affinity + 1]; 1856 else 1857 *rsp = ha->rsp_q_map[0]; 1858 } 1859 1860 /* Generic Control-SRB manipulation functions. */ 1861 1862 /* hardware_lock assumed to be held. */ 1863 void * 1864 qla2x00_alloc_iocbs_ready(scsi_qla_host_t *vha, srb_t *sp) 1865 { 1866 if (qla2x00_reset_active(vha)) 1867 return NULL; 1868 1869 return qla2x00_alloc_iocbs(vha, sp); 1870 } 1871 1872 void * 1873 qla2x00_alloc_iocbs(scsi_qla_host_t *vha, srb_t *sp) 1874 { 1875 struct qla_hw_data *ha = vha->hw; 1876 struct req_que *req = ha->req_q_map[0]; 1877 device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id); 1878 uint32_t index, handle; 1879 request_t *pkt; 1880 uint16_t cnt, req_cnt; 1881 1882 pkt = NULL; 1883 req_cnt = 1; 1884 handle = 0; 1885 1886 if (!sp) 1887 goto skip_cmd_array; 1888 1889 /* Check for room in outstanding command list. */ 1890 handle = req->current_outstanding_cmd; 1891 for (index = 1; index < req->num_outstanding_cmds; index++) { 1892 handle++; 1893 if (handle == req->num_outstanding_cmds) 1894 handle = 1; 1895 if (!req->outstanding_cmds[handle]) 1896 break; 1897 } 1898 if (index == req->num_outstanding_cmds) { 1899 ql_log(ql_log_warn, vha, 0x700b, 1900 "No room on outstanding cmd array.\n"); 1901 goto queuing_error; 1902 } 1903 1904 /* Prep command array. */ 1905 req->current_outstanding_cmd = handle; 1906 req->outstanding_cmds[handle] = sp; 1907 sp->handle = handle; 1908 1909 /* Adjust entry-counts as needed. */ 1910 if (sp->type != SRB_SCSI_CMD) 1911 req_cnt = sp->iocbs; 1912 1913 skip_cmd_array: 1914 /* Check for room on request queue. */ 1915 if (req->cnt < req_cnt + 2) { 1916 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) 1917 cnt = RD_REG_DWORD(®->isp25mq.req_q_out); 1918 else if (IS_P3P_TYPE(ha)) 1919 cnt = RD_REG_DWORD(®->isp82.req_q_out); 1920 else if (IS_FWI2_CAPABLE(ha)) 1921 cnt = RD_REG_DWORD(®->isp24.req_q_out); 1922 else if (IS_QLAFX00(ha)) 1923 cnt = RD_REG_DWORD(®->ispfx00.req_q_out); 1924 else 1925 cnt = qla2x00_debounce_register( 1926 ISP_REQ_Q_OUT(ha, ®->isp)); 1927 1928 if (req->ring_index < cnt) 1929 req->cnt = cnt - req->ring_index; 1930 else 1931 req->cnt = req->length - 1932 (req->ring_index - cnt); 1933 } 1934 if (req->cnt < req_cnt + 2) 1935 goto queuing_error; 1936 1937 /* Prep packet */ 1938 req->cnt -= req_cnt; 1939 pkt = req->ring_ptr; 1940 memset(pkt, 0, REQUEST_ENTRY_SIZE); 1941 if (IS_QLAFX00(ha)) { 1942 WRT_REG_BYTE((void __iomem *)&pkt->entry_count, req_cnt); 1943 WRT_REG_WORD((void __iomem *)&pkt->handle, handle); 1944 } else { 1945 pkt->entry_count = req_cnt; 1946 pkt->handle = handle; 1947 } 1948 1949 queuing_error: 1950 return pkt; 1951 } 1952 1953 static void 1954 qla24xx_login_iocb(srb_t *sp, struct logio_entry_24xx *logio) 1955 { 1956 struct srb_iocb *lio = &sp->u.iocb_cmd; 1957 1958 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; 1959 logio->control_flags = cpu_to_le16(LCF_COMMAND_PLOGI); 1960 if (lio->u.logio.flags & SRB_LOGIN_COND_PLOGI) 1961 logio->control_flags |= cpu_to_le16(LCF_COND_PLOGI); 1962 if (lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI) 1963 logio->control_flags |= cpu_to_le16(LCF_SKIP_PRLI); 1964 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1965 logio->port_id[0] = sp->fcport->d_id.b.al_pa; 1966 logio->port_id[1] = sp->fcport->d_id.b.area; 1967 logio->port_id[2] = sp->fcport->d_id.b.domain; 1968 logio->vp_index = sp->fcport->vha->vp_idx; 1969 } 1970 1971 static void 1972 qla2x00_login_iocb(srb_t *sp, struct mbx_entry *mbx) 1973 { 1974 struct qla_hw_data *ha = sp->fcport->vha->hw; 1975 struct srb_iocb *lio = &sp->u.iocb_cmd; 1976 uint16_t opts; 1977 1978 mbx->entry_type = MBX_IOCB_TYPE; 1979 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id); 1980 mbx->mb0 = cpu_to_le16(MBC_LOGIN_FABRIC_PORT); 1981 opts = lio->u.logio.flags & SRB_LOGIN_COND_PLOGI ? BIT_0 : 0; 1982 opts |= lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI ? BIT_1 : 0; 1983 if (HAS_EXTENDED_IDS(ha)) { 1984 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id); 1985 mbx->mb10 = cpu_to_le16(opts); 1986 } else { 1987 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | opts); 1988 } 1989 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain); 1990 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 | 1991 sp->fcport->d_id.b.al_pa); 1992 mbx->mb9 = cpu_to_le16(sp->fcport->vha->vp_idx); 1993 } 1994 1995 static void 1996 qla24xx_logout_iocb(srb_t *sp, struct logio_entry_24xx *logio) 1997 { 1998 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; 1999 logio->control_flags = 2000 cpu_to_le16(LCF_COMMAND_LOGO|LCF_IMPL_LOGO); 2001 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2002 logio->port_id[0] = sp->fcport->d_id.b.al_pa; 2003 logio->port_id[1] = sp->fcport->d_id.b.area; 2004 logio->port_id[2] = sp->fcport->d_id.b.domain; 2005 logio->vp_index = sp->fcport->vha->vp_idx; 2006 } 2007 2008 static void 2009 qla2x00_logout_iocb(srb_t *sp, struct mbx_entry *mbx) 2010 { 2011 struct qla_hw_data *ha = sp->fcport->vha->hw; 2012 2013 mbx->entry_type = MBX_IOCB_TYPE; 2014 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id); 2015 mbx->mb0 = cpu_to_le16(MBC_LOGOUT_FABRIC_PORT); 2016 mbx->mb1 = HAS_EXTENDED_IDS(ha) ? 2017 cpu_to_le16(sp->fcport->loop_id): 2018 cpu_to_le16(sp->fcport->loop_id << 8); 2019 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain); 2020 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 | 2021 sp->fcport->d_id.b.al_pa); 2022 mbx->mb9 = cpu_to_le16(sp->fcport->vha->vp_idx); 2023 /* Implicit: mbx->mbx10 = 0. */ 2024 } 2025 2026 static void 2027 qla24xx_adisc_iocb(srb_t *sp, struct logio_entry_24xx *logio) 2028 { 2029 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; 2030 logio->control_flags = cpu_to_le16(LCF_COMMAND_ADISC); 2031 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2032 logio->vp_index = sp->fcport->vha->vp_idx; 2033 } 2034 2035 static void 2036 qla2x00_adisc_iocb(srb_t *sp, struct mbx_entry *mbx) 2037 { 2038 struct qla_hw_data *ha = sp->fcport->vha->hw; 2039 2040 mbx->entry_type = MBX_IOCB_TYPE; 2041 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id); 2042 mbx->mb0 = cpu_to_le16(MBC_GET_PORT_DATABASE); 2043 if (HAS_EXTENDED_IDS(ha)) { 2044 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id); 2045 mbx->mb10 = cpu_to_le16(BIT_0); 2046 } else { 2047 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | BIT_0); 2048 } 2049 mbx->mb2 = cpu_to_le16(MSW(ha->async_pd_dma)); 2050 mbx->mb3 = cpu_to_le16(LSW(ha->async_pd_dma)); 2051 mbx->mb6 = cpu_to_le16(MSW(MSD(ha->async_pd_dma))); 2052 mbx->mb7 = cpu_to_le16(LSW(MSD(ha->async_pd_dma))); 2053 mbx->mb9 = cpu_to_le16(sp->fcport->vha->vp_idx); 2054 } 2055 2056 static void 2057 qla24xx_tm_iocb(srb_t *sp, struct tsk_mgmt_entry *tsk) 2058 { 2059 uint32_t flags; 2060 uint64_t lun; 2061 struct fc_port *fcport = sp->fcport; 2062 scsi_qla_host_t *vha = fcport->vha; 2063 struct qla_hw_data *ha = vha->hw; 2064 struct srb_iocb *iocb = &sp->u.iocb_cmd; 2065 struct req_que *req = vha->req; 2066 2067 flags = iocb->u.tmf.flags; 2068 lun = iocb->u.tmf.lun; 2069 2070 tsk->entry_type = TSK_MGMT_IOCB_TYPE; 2071 tsk->entry_count = 1; 2072 tsk->handle = MAKE_HANDLE(req->id, tsk->handle); 2073 tsk->nport_handle = cpu_to_le16(fcport->loop_id); 2074 tsk->timeout = cpu_to_le16(ha->r_a_tov / 10 * 2); 2075 tsk->control_flags = cpu_to_le32(flags); 2076 tsk->port_id[0] = fcport->d_id.b.al_pa; 2077 tsk->port_id[1] = fcport->d_id.b.area; 2078 tsk->port_id[2] = fcport->d_id.b.domain; 2079 tsk->vp_index = fcport->vha->vp_idx; 2080 2081 if (flags == TCF_LUN_RESET) { 2082 int_to_scsilun(lun, &tsk->lun); 2083 host_to_fcp_swap((uint8_t *)&tsk->lun, 2084 sizeof(tsk->lun)); 2085 } 2086 } 2087 2088 static void 2089 qla24xx_els_iocb(srb_t *sp, struct els_entry_24xx *els_iocb) 2090 { 2091 struct fc_bsg_job *bsg_job = sp->u.bsg_job; 2092 2093 els_iocb->entry_type = ELS_IOCB_TYPE; 2094 els_iocb->entry_count = 1; 2095 els_iocb->sys_define = 0; 2096 els_iocb->entry_status = 0; 2097 els_iocb->handle = sp->handle; 2098 els_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2099 els_iocb->tx_dsd_count = __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt); 2100 els_iocb->vp_index = sp->fcport->vha->vp_idx; 2101 els_iocb->sof_type = EST_SOFI3; 2102 els_iocb->rx_dsd_count = __constant_cpu_to_le16(bsg_job->reply_payload.sg_cnt); 2103 2104 els_iocb->opcode = 2105 sp->type == SRB_ELS_CMD_RPT ? 2106 bsg_job->request->rqst_data.r_els.els_code : 2107 bsg_job->request->rqst_data.h_els.command_code; 2108 els_iocb->port_id[0] = sp->fcport->d_id.b.al_pa; 2109 els_iocb->port_id[1] = sp->fcport->d_id.b.area; 2110 els_iocb->port_id[2] = sp->fcport->d_id.b.domain; 2111 els_iocb->control_flags = 0; 2112 els_iocb->rx_byte_count = 2113 cpu_to_le32(bsg_job->reply_payload.payload_len); 2114 els_iocb->tx_byte_count = 2115 cpu_to_le32(bsg_job->request_payload.payload_len); 2116 2117 els_iocb->tx_address[0] = cpu_to_le32(LSD(sg_dma_address 2118 (bsg_job->request_payload.sg_list))); 2119 els_iocb->tx_address[1] = cpu_to_le32(MSD(sg_dma_address 2120 (bsg_job->request_payload.sg_list))); 2121 els_iocb->tx_len = cpu_to_le32(sg_dma_len 2122 (bsg_job->request_payload.sg_list)); 2123 2124 els_iocb->rx_address[0] = cpu_to_le32(LSD(sg_dma_address 2125 (bsg_job->reply_payload.sg_list))); 2126 els_iocb->rx_address[1] = cpu_to_le32(MSD(sg_dma_address 2127 (bsg_job->reply_payload.sg_list))); 2128 els_iocb->rx_len = cpu_to_le32(sg_dma_len 2129 (bsg_job->reply_payload.sg_list)); 2130 2131 sp->fcport->vha->qla_stats.control_requests++; 2132 } 2133 2134 static void 2135 qla2x00_ct_iocb(srb_t *sp, ms_iocb_entry_t *ct_iocb) 2136 { 2137 uint16_t avail_dsds; 2138 uint32_t *cur_dsd; 2139 struct scatterlist *sg; 2140 int index; 2141 uint16_t tot_dsds; 2142 scsi_qla_host_t *vha = sp->fcport->vha; 2143 struct qla_hw_data *ha = vha->hw; 2144 struct fc_bsg_job *bsg_job = sp->u.bsg_job; 2145 int loop_iterartion = 0; 2146 int cont_iocb_prsnt = 0; 2147 int entry_count = 1; 2148 2149 memset(ct_iocb, 0, sizeof(ms_iocb_entry_t)); 2150 ct_iocb->entry_type = CT_IOCB_TYPE; 2151 ct_iocb->entry_status = 0; 2152 ct_iocb->handle1 = sp->handle; 2153 SET_TARGET_ID(ha, ct_iocb->loop_id, sp->fcport->loop_id); 2154 ct_iocb->status = __constant_cpu_to_le16(0); 2155 ct_iocb->control_flags = __constant_cpu_to_le16(0); 2156 ct_iocb->timeout = 0; 2157 ct_iocb->cmd_dsd_count = 2158 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt); 2159 ct_iocb->total_dsd_count = 2160 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt + 1); 2161 ct_iocb->req_bytecount = 2162 cpu_to_le32(bsg_job->request_payload.payload_len); 2163 ct_iocb->rsp_bytecount = 2164 cpu_to_le32(bsg_job->reply_payload.payload_len); 2165 2166 ct_iocb->dseg_req_address[0] = cpu_to_le32(LSD(sg_dma_address 2167 (bsg_job->request_payload.sg_list))); 2168 ct_iocb->dseg_req_address[1] = cpu_to_le32(MSD(sg_dma_address 2169 (bsg_job->request_payload.sg_list))); 2170 ct_iocb->dseg_req_length = ct_iocb->req_bytecount; 2171 2172 ct_iocb->dseg_rsp_address[0] = cpu_to_le32(LSD(sg_dma_address 2173 (bsg_job->reply_payload.sg_list))); 2174 ct_iocb->dseg_rsp_address[1] = cpu_to_le32(MSD(sg_dma_address 2175 (bsg_job->reply_payload.sg_list))); 2176 ct_iocb->dseg_rsp_length = ct_iocb->rsp_bytecount; 2177 2178 avail_dsds = 1; 2179 cur_dsd = (uint32_t *)ct_iocb->dseg_rsp_address; 2180 index = 0; 2181 tot_dsds = bsg_job->reply_payload.sg_cnt; 2182 2183 for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) { 2184 dma_addr_t sle_dma; 2185 cont_a64_entry_t *cont_pkt; 2186 2187 /* Allocate additional continuation packets? */ 2188 if (avail_dsds == 0) { 2189 /* 2190 * Five DSDs are available in the Cont. 2191 * Type 1 IOCB. 2192 */ 2193 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, 2194 vha->hw->req_q_map[0]); 2195 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address; 2196 avail_dsds = 5; 2197 cont_iocb_prsnt = 1; 2198 entry_count++; 2199 } 2200 2201 sle_dma = sg_dma_address(sg); 2202 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 2203 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 2204 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 2205 loop_iterartion++; 2206 avail_dsds--; 2207 } 2208 ct_iocb->entry_count = entry_count; 2209 2210 sp->fcport->vha->qla_stats.control_requests++; 2211 } 2212 2213 static void 2214 qla24xx_ct_iocb(srb_t *sp, struct ct_entry_24xx *ct_iocb) 2215 { 2216 uint16_t avail_dsds; 2217 uint32_t *cur_dsd; 2218 struct scatterlist *sg; 2219 int index; 2220 uint16_t tot_dsds; 2221 scsi_qla_host_t *vha = sp->fcport->vha; 2222 struct qla_hw_data *ha = vha->hw; 2223 struct fc_bsg_job *bsg_job = sp->u.bsg_job; 2224 int loop_iterartion = 0; 2225 int cont_iocb_prsnt = 0; 2226 int entry_count = 1; 2227 2228 ct_iocb->entry_type = CT_IOCB_TYPE; 2229 ct_iocb->entry_status = 0; 2230 ct_iocb->sys_define = 0; 2231 ct_iocb->handle = sp->handle; 2232 2233 ct_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2234 ct_iocb->vp_index = sp->fcport->vha->vp_idx; 2235 ct_iocb->comp_status = __constant_cpu_to_le16(0); 2236 2237 ct_iocb->cmd_dsd_count = 2238 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt); 2239 ct_iocb->timeout = 0; 2240 ct_iocb->rsp_dsd_count = 2241 __constant_cpu_to_le16(bsg_job->reply_payload.sg_cnt); 2242 ct_iocb->rsp_byte_count = 2243 cpu_to_le32(bsg_job->reply_payload.payload_len); 2244 ct_iocb->cmd_byte_count = 2245 cpu_to_le32(bsg_job->request_payload.payload_len); 2246 ct_iocb->dseg_0_address[0] = cpu_to_le32(LSD(sg_dma_address 2247 (bsg_job->request_payload.sg_list))); 2248 ct_iocb->dseg_0_address[1] = cpu_to_le32(MSD(sg_dma_address 2249 (bsg_job->request_payload.sg_list))); 2250 ct_iocb->dseg_0_len = cpu_to_le32(sg_dma_len 2251 (bsg_job->request_payload.sg_list)); 2252 2253 avail_dsds = 1; 2254 cur_dsd = (uint32_t *)ct_iocb->dseg_1_address; 2255 index = 0; 2256 tot_dsds = bsg_job->reply_payload.sg_cnt; 2257 2258 for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) { 2259 dma_addr_t sle_dma; 2260 cont_a64_entry_t *cont_pkt; 2261 2262 /* Allocate additional continuation packets? */ 2263 if (avail_dsds == 0) { 2264 /* 2265 * Five DSDs are available in the Cont. 2266 * Type 1 IOCB. 2267 */ 2268 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, 2269 ha->req_q_map[0]); 2270 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address; 2271 avail_dsds = 5; 2272 cont_iocb_prsnt = 1; 2273 entry_count++; 2274 } 2275 2276 sle_dma = sg_dma_address(sg); 2277 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 2278 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 2279 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 2280 loop_iterartion++; 2281 avail_dsds--; 2282 } 2283 ct_iocb->entry_count = entry_count; 2284 } 2285 2286 /* 2287 * qla82xx_start_scsi() - Send a SCSI command to the ISP 2288 * @sp: command to send to the ISP 2289 * 2290 * Returns non-zero if a failure occurred, else zero. 2291 */ 2292 int 2293 qla82xx_start_scsi(srb_t *sp) 2294 { 2295 int ret, nseg; 2296 unsigned long flags; 2297 struct scsi_cmnd *cmd; 2298 uint32_t *clr_ptr; 2299 uint32_t index; 2300 uint32_t handle; 2301 uint16_t cnt; 2302 uint16_t req_cnt; 2303 uint16_t tot_dsds; 2304 struct device_reg_82xx __iomem *reg; 2305 uint32_t dbval; 2306 uint32_t *fcp_dl; 2307 uint8_t additional_cdb_len; 2308 struct ct6_dsd *ctx; 2309 struct scsi_qla_host *vha = sp->fcport->vha; 2310 struct qla_hw_data *ha = vha->hw; 2311 struct req_que *req = NULL; 2312 struct rsp_que *rsp = NULL; 2313 char tag[2]; 2314 2315 /* Setup device pointers. */ 2316 ret = 0; 2317 reg = &ha->iobase->isp82; 2318 cmd = GET_CMD_SP(sp); 2319 req = vha->req; 2320 rsp = ha->rsp_q_map[0]; 2321 2322 /* So we know we haven't pci_map'ed anything yet */ 2323 tot_dsds = 0; 2324 2325 dbval = 0x04 | (ha->portnum << 5); 2326 2327 /* Send marker if required */ 2328 if (vha->marker_needed != 0) { 2329 if (qla2x00_marker(vha, req, 2330 rsp, 0, 0, MK_SYNC_ALL) != QLA_SUCCESS) { 2331 ql_log(ql_log_warn, vha, 0x300c, 2332 "qla2x00_marker failed for cmd=%p.\n", cmd); 2333 return QLA_FUNCTION_FAILED; 2334 } 2335 vha->marker_needed = 0; 2336 } 2337 2338 /* Acquire ring specific lock */ 2339 spin_lock_irqsave(&ha->hardware_lock, flags); 2340 2341 /* Check for room in outstanding command list. */ 2342 handle = req->current_outstanding_cmd; 2343 for (index = 1; index < req->num_outstanding_cmds; index++) { 2344 handle++; 2345 if (handle == req->num_outstanding_cmds) 2346 handle = 1; 2347 if (!req->outstanding_cmds[handle]) 2348 break; 2349 } 2350 if (index == req->num_outstanding_cmds) 2351 goto queuing_error; 2352 2353 /* Map the sg table so we have an accurate count of sg entries needed */ 2354 if (scsi_sg_count(cmd)) { 2355 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd), 2356 scsi_sg_count(cmd), cmd->sc_data_direction); 2357 if (unlikely(!nseg)) 2358 goto queuing_error; 2359 } else 2360 nseg = 0; 2361 2362 tot_dsds = nseg; 2363 2364 if (tot_dsds > ql2xshiftctondsd) { 2365 struct cmd_type_6 *cmd_pkt; 2366 uint16_t more_dsd_lists = 0; 2367 struct dsd_dma *dsd_ptr; 2368 uint16_t i; 2369 2370 more_dsd_lists = qla24xx_calc_dsd_lists(tot_dsds); 2371 if ((more_dsd_lists + ha->gbl_dsd_inuse) >= NUM_DSD_CHAIN) { 2372 ql_dbg(ql_dbg_io, vha, 0x300d, 2373 "Num of DSD list %d is than %d for cmd=%p.\n", 2374 more_dsd_lists + ha->gbl_dsd_inuse, NUM_DSD_CHAIN, 2375 cmd); 2376 goto queuing_error; 2377 } 2378 2379 if (more_dsd_lists <= ha->gbl_dsd_avail) 2380 goto sufficient_dsds; 2381 else 2382 more_dsd_lists -= ha->gbl_dsd_avail; 2383 2384 for (i = 0; i < more_dsd_lists; i++) { 2385 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC); 2386 if (!dsd_ptr) { 2387 ql_log(ql_log_fatal, vha, 0x300e, 2388 "Failed to allocate memory for dsd_dma " 2389 "for cmd=%p.\n", cmd); 2390 goto queuing_error; 2391 } 2392 2393 dsd_ptr->dsd_addr = dma_pool_alloc(ha->dl_dma_pool, 2394 GFP_ATOMIC, &dsd_ptr->dsd_list_dma); 2395 if (!dsd_ptr->dsd_addr) { 2396 kfree(dsd_ptr); 2397 ql_log(ql_log_fatal, vha, 0x300f, 2398 "Failed to allocate memory for dsd_addr " 2399 "for cmd=%p.\n", cmd); 2400 goto queuing_error; 2401 } 2402 list_add_tail(&dsd_ptr->list, &ha->gbl_dsd_list); 2403 ha->gbl_dsd_avail++; 2404 } 2405 2406 sufficient_dsds: 2407 req_cnt = 1; 2408 2409 if (req->cnt < (req_cnt + 2)) { 2410 cnt = (uint16_t)RD_REG_DWORD_RELAXED( 2411 ®->req_q_out[0]); 2412 if (req->ring_index < cnt) 2413 req->cnt = cnt - req->ring_index; 2414 else 2415 req->cnt = req->length - 2416 (req->ring_index - cnt); 2417 if (req->cnt < (req_cnt + 2)) 2418 goto queuing_error; 2419 } 2420 2421 ctx = sp->u.scmd.ctx = 2422 mempool_alloc(ha->ctx_mempool, GFP_ATOMIC); 2423 if (!ctx) { 2424 ql_log(ql_log_fatal, vha, 0x3010, 2425 "Failed to allocate ctx for cmd=%p.\n", cmd); 2426 goto queuing_error; 2427 } 2428 2429 memset(ctx, 0, sizeof(struct ct6_dsd)); 2430 ctx->fcp_cmnd = dma_pool_alloc(ha->fcp_cmnd_dma_pool, 2431 GFP_ATOMIC, &ctx->fcp_cmnd_dma); 2432 if (!ctx->fcp_cmnd) { 2433 ql_log(ql_log_fatal, vha, 0x3011, 2434 "Failed to allocate fcp_cmnd for cmd=%p.\n", cmd); 2435 goto queuing_error; 2436 } 2437 2438 /* Initialize the DSD list and dma handle */ 2439 INIT_LIST_HEAD(&ctx->dsd_list); 2440 ctx->dsd_use_cnt = 0; 2441 2442 if (cmd->cmd_len > 16) { 2443 additional_cdb_len = cmd->cmd_len - 16; 2444 if ((cmd->cmd_len % 4) != 0) { 2445 /* SCSI command bigger than 16 bytes must be 2446 * multiple of 4 2447 */ 2448 ql_log(ql_log_warn, vha, 0x3012, 2449 "scsi cmd len %d not multiple of 4 " 2450 "for cmd=%p.\n", cmd->cmd_len, cmd); 2451 goto queuing_error_fcp_cmnd; 2452 } 2453 ctx->fcp_cmnd_len = 12 + cmd->cmd_len + 4; 2454 } else { 2455 additional_cdb_len = 0; 2456 ctx->fcp_cmnd_len = 12 + 16 + 4; 2457 } 2458 2459 cmd_pkt = (struct cmd_type_6 *)req->ring_ptr; 2460 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 2461 2462 /* Zero out remaining portion of packet. */ 2463 /* tagged queuing modifier -- default is TSK_SIMPLE (0). */ 2464 clr_ptr = (uint32_t *)cmd_pkt + 2; 2465 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 2466 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 2467 2468 /* Set NPORT-ID and LUN number*/ 2469 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2470 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; 2471 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; 2472 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; 2473 cmd_pkt->vp_index = sp->fcport->vha->vp_idx; 2474 2475 /* Build IOCB segments */ 2476 if (qla24xx_build_scsi_type_6_iocbs(sp, cmd_pkt, tot_dsds)) 2477 goto queuing_error_fcp_cmnd; 2478 2479 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun); 2480 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun)); 2481 2482 /* build FCP_CMND IU */ 2483 memset(ctx->fcp_cmnd, 0, sizeof(struct fcp_cmnd)); 2484 int_to_scsilun(cmd->device->lun, &ctx->fcp_cmnd->lun); 2485 ctx->fcp_cmnd->additional_cdb_len = additional_cdb_len; 2486 2487 if (cmd->sc_data_direction == DMA_TO_DEVICE) 2488 ctx->fcp_cmnd->additional_cdb_len |= 1; 2489 else if (cmd->sc_data_direction == DMA_FROM_DEVICE) 2490 ctx->fcp_cmnd->additional_cdb_len |= 2; 2491 2492 /* 2493 * Update tagged queuing modifier -- default is TSK_SIMPLE (0). 2494 */ 2495 if (scsi_populate_tag_msg(cmd, tag)) { 2496 switch (tag[0]) { 2497 case HEAD_OF_QUEUE_TAG: 2498 ctx->fcp_cmnd->task_attribute = 2499 TSK_HEAD_OF_QUEUE; 2500 break; 2501 case ORDERED_QUEUE_TAG: 2502 ctx->fcp_cmnd->task_attribute = 2503 TSK_ORDERED; 2504 break; 2505 } 2506 } 2507 2508 /* Populate the FCP_PRIO. */ 2509 if (ha->flags.fcp_prio_enabled) 2510 ctx->fcp_cmnd->task_attribute |= 2511 sp->fcport->fcp_prio << 3; 2512 2513 memcpy(ctx->fcp_cmnd->cdb, cmd->cmnd, cmd->cmd_len); 2514 2515 fcp_dl = (uint32_t *)(ctx->fcp_cmnd->cdb + 16 + 2516 additional_cdb_len); 2517 *fcp_dl = htonl((uint32_t)scsi_bufflen(cmd)); 2518 2519 cmd_pkt->fcp_cmnd_dseg_len = cpu_to_le16(ctx->fcp_cmnd_len); 2520 cmd_pkt->fcp_cmnd_dseg_address[0] = 2521 cpu_to_le32(LSD(ctx->fcp_cmnd_dma)); 2522 cmd_pkt->fcp_cmnd_dseg_address[1] = 2523 cpu_to_le32(MSD(ctx->fcp_cmnd_dma)); 2524 2525 sp->flags |= SRB_FCP_CMND_DMA_VALID; 2526 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); 2527 /* Set total data segment count. */ 2528 cmd_pkt->entry_count = (uint8_t)req_cnt; 2529 /* Specify response queue number where 2530 * completion should happen 2531 */ 2532 cmd_pkt->entry_status = (uint8_t) rsp->id; 2533 } else { 2534 struct cmd_type_7 *cmd_pkt; 2535 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds); 2536 if (req->cnt < (req_cnt + 2)) { 2537 cnt = (uint16_t)RD_REG_DWORD_RELAXED( 2538 ®->req_q_out[0]); 2539 if (req->ring_index < cnt) 2540 req->cnt = cnt - req->ring_index; 2541 else 2542 req->cnt = req->length - 2543 (req->ring_index - cnt); 2544 } 2545 if (req->cnt < (req_cnt + 2)) 2546 goto queuing_error; 2547 2548 cmd_pkt = (struct cmd_type_7 *)req->ring_ptr; 2549 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 2550 2551 /* Zero out remaining portion of packet. */ 2552 /* tagged queuing modifier -- default is TSK_SIMPLE (0).*/ 2553 clr_ptr = (uint32_t *)cmd_pkt + 2; 2554 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 2555 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 2556 2557 /* Set NPORT-ID and LUN number*/ 2558 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2559 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; 2560 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; 2561 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; 2562 cmd_pkt->vp_index = sp->fcport->vha->vp_idx; 2563 2564 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun); 2565 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, 2566 sizeof(cmd_pkt->lun)); 2567 2568 /* 2569 * Update tagged queuing modifier -- default is TSK_SIMPLE (0). 2570 */ 2571 if (scsi_populate_tag_msg(cmd, tag)) { 2572 switch (tag[0]) { 2573 case HEAD_OF_QUEUE_TAG: 2574 cmd_pkt->task = TSK_HEAD_OF_QUEUE; 2575 break; 2576 case ORDERED_QUEUE_TAG: 2577 cmd_pkt->task = TSK_ORDERED; 2578 break; 2579 } 2580 } 2581 2582 /* Populate the FCP_PRIO. */ 2583 if (ha->flags.fcp_prio_enabled) 2584 cmd_pkt->task |= sp->fcport->fcp_prio << 3; 2585 2586 /* Load SCSI command packet. */ 2587 memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len); 2588 host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb)); 2589 2590 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); 2591 2592 /* Build IOCB segments */ 2593 qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds); 2594 2595 /* Set total data segment count. */ 2596 cmd_pkt->entry_count = (uint8_t)req_cnt; 2597 /* Specify response queue number where 2598 * completion should happen. 2599 */ 2600 cmd_pkt->entry_status = (uint8_t) rsp->id; 2601 2602 } 2603 /* Build command packet. */ 2604 req->current_outstanding_cmd = handle; 2605 req->outstanding_cmds[handle] = sp; 2606 sp->handle = handle; 2607 cmd->host_scribble = (unsigned char *)(unsigned long)handle; 2608 req->cnt -= req_cnt; 2609 wmb(); 2610 2611 /* Adjust ring index. */ 2612 req->ring_index++; 2613 if (req->ring_index == req->length) { 2614 req->ring_index = 0; 2615 req->ring_ptr = req->ring; 2616 } else 2617 req->ring_ptr++; 2618 2619 sp->flags |= SRB_DMA_VALID; 2620 2621 /* Set chip new ring index. */ 2622 /* write, read and verify logic */ 2623 dbval = dbval | (req->id << 8) | (req->ring_index << 16); 2624 if (ql2xdbwr) 2625 qla82xx_wr_32(ha, ha->nxdb_wr_ptr, dbval); 2626 else { 2627 WRT_REG_DWORD( 2628 (unsigned long __iomem *)ha->nxdb_wr_ptr, 2629 dbval); 2630 wmb(); 2631 while (RD_REG_DWORD((void __iomem *)ha->nxdb_rd_ptr) != dbval) { 2632 WRT_REG_DWORD( 2633 (unsigned long __iomem *)ha->nxdb_wr_ptr, 2634 dbval); 2635 wmb(); 2636 } 2637 } 2638 2639 /* Manage unprocessed RIO/ZIO commands in response queue. */ 2640 if (vha->flags.process_response_queue && 2641 rsp->ring_ptr->signature != RESPONSE_PROCESSED) 2642 qla24xx_process_response_queue(vha, rsp); 2643 2644 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2645 return QLA_SUCCESS; 2646 2647 queuing_error_fcp_cmnd: 2648 dma_pool_free(ha->fcp_cmnd_dma_pool, ctx->fcp_cmnd, ctx->fcp_cmnd_dma); 2649 queuing_error: 2650 if (tot_dsds) 2651 scsi_dma_unmap(cmd); 2652 2653 if (sp->u.scmd.ctx) { 2654 mempool_free(sp->u.scmd.ctx, ha->ctx_mempool); 2655 sp->u.scmd.ctx = NULL; 2656 } 2657 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2658 2659 return QLA_FUNCTION_FAILED; 2660 } 2661 2662 static void 2663 qla24xx_abort_iocb(srb_t *sp, struct abort_entry_24xx *abt_iocb) 2664 { 2665 struct srb_iocb *aio = &sp->u.iocb_cmd; 2666 scsi_qla_host_t *vha = sp->fcport->vha; 2667 struct req_que *req = vha->req; 2668 2669 memset(abt_iocb, 0, sizeof(struct abort_entry_24xx)); 2670 abt_iocb->entry_type = ABORT_IOCB_TYPE; 2671 abt_iocb->entry_count = 1; 2672 abt_iocb->handle = cpu_to_le32(MAKE_HANDLE(req->id, sp->handle)); 2673 abt_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2674 abt_iocb->handle_to_abort = 2675 cpu_to_le32(MAKE_HANDLE(req->id, aio->u.abt.cmd_hndl)); 2676 abt_iocb->port_id[0] = sp->fcport->d_id.b.al_pa; 2677 abt_iocb->port_id[1] = sp->fcport->d_id.b.area; 2678 abt_iocb->port_id[2] = sp->fcport->d_id.b.domain; 2679 abt_iocb->vp_index = vha->vp_idx; 2680 abt_iocb->req_que_no = cpu_to_le16(req->id); 2681 /* Send the command to the firmware */ 2682 wmb(); 2683 } 2684 2685 int 2686 qla2x00_start_sp(srb_t *sp) 2687 { 2688 int rval; 2689 struct qla_hw_data *ha = sp->fcport->vha->hw; 2690 void *pkt; 2691 unsigned long flags; 2692 2693 rval = QLA_FUNCTION_FAILED; 2694 spin_lock_irqsave(&ha->hardware_lock, flags); 2695 pkt = qla2x00_alloc_iocbs(sp->fcport->vha, sp); 2696 if (!pkt) { 2697 ql_log(ql_log_warn, sp->fcport->vha, 0x700c, 2698 "qla2x00_alloc_iocbs failed.\n"); 2699 goto done; 2700 } 2701 2702 rval = QLA_SUCCESS; 2703 switch (sp->type) { 2704 case SRB_LOGIN_CMD: 2705 IS_FWI2_CAPABLE(ha) ? 2706 qla24xx_login_iocb(sp, pkt) : 2707 qla2x00_login_iocb(sp, pkt); 2708 break; 2709 case SRB_LOGOUT_CMD: 2710 IS_FWI2_CAPABLE(ha) ? 2711 qla24xx_logout_iocb(sp, pkt) : 2712 qla2x00_logout_iocb(sp, pkt); 2713 break; 2714 case SRB_ELS_CMD_RPT: 2715 case SRB_ELS_CMD_HST: 2716 qla24xx_els_iocb(sp, pkt); 2717 break; 2718 case SRB_CT_CMD: 2719 IS_FWI2_CAPABLE(ha) ? 2720 qla24xx_ct_iocb(sp, pkt) : 2721 qla2x00_ct_iocb(sp, pkt); 2722 break; 2723 case SRB_ADISC_CMD: 2724 IS_FWI2_CAPABLE(ha) ? 2725 qla24xx_adisc_iocb(sp, pkt) : 2726 qla2x00_adisc_iocb(sp, pkt); 2727 break; 2728 case SRB_TM_CMD: 2729 IS_QLAFX00(ha) ? 2730 qlafx00_tm_iocb(sp, pkt) : 2731 qla24xx_tm_iocb(sp, pkt); 2732 break; 2733 case SRB_FXIOCB_DCMD: 2734 case SRB_FXIOCB_BCMD: 2735 qlafx00_fxdisc_iocb(sp, pkt); 2736 break; 2737 case SRB_ABT_CMD: 2738 IS_QLAFX00(ha) ? 2739 qlafx00_abort_iocb(sp, pkt) : 2740 qla24xx_abort_iocb(sp, pkt); 2741 break; 2742 default: 2743 break; 2744 } 2745 2746 wmb(); 2747 qla2x00_start_iocbs(sp->fcport->vha, ha->req_q_map[0]); 2748 done: 2749 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2750 return rval; 2751 } 2752 2753 static void 2754 qla25xx_build_bidir_iocb(srb_t *sp, struct scsi_qla_host *vha, 2755 struct cmd_bidir *cmd_pkt, uint32_t tot_dsds) 2756 { 2757 uint16_t avail_dsds; 2758 uint32_t *cur_dsd; 2759 uint32_t req_data_len = 0; 2760 uint32_t rsp_data_len = 0; 2761 struct scatterlist *sg; 2762 int index; 2763 int entry_count = 1; 2764 struct fc_bsg_job *bsg_job = sp->u.bsg_job; 2765 2766 /*Update entry type to indicate bidir command */ 2767 *((uint32_t *)(&cmd_pkt->entry_type)) = 2768 __constant_cpu_to_le32(COMMAND_BIDIRECTIONAL); 2769 2770 /* Set the transfer direction, in this set both flags 2771 * Also set the BD_WRAP_BACK flag, firmware will take care 2772 * assigning DID=SID for outgoing pkts. 2773 */ 2774 cmd_pkt->wr_dseg_count = cpu_to_le16(bsg_job->request_payload.sg_cnt); 2775 cmd_pkt->rd_dseg_count = cpu_to_le16(bsg_job->reply_payload.sg_cnt); 2776 cmd_pkt->control_flags = 2777 __constant_cpu_to_le16(BD_WRITE_DATA | BD_READ_DATA | 2778 BD_WRAP_BACK); 2779 2780 req_data_len = rsp_data_len = bsg_job->request_payload.payload_len; 2781 cmd_pkt->wr_byte_count = cpu_to_le32(req_data_len); 2782 cmd_pkt->rd_byte_count = cpu_to_le32(rsp_data_len); 2783 cmd_pkt->timeout = cpu_to_le16(qla2x00_get_async_timeout(vha) + 2); 2784 2785 vha->bidi_stats.transfer_bytes += req_data_len; 2786 vha->bidi_stats.io_count++; 2787 2788 vha->qla_stats.output_bytes += req_data_len; 2789 vha->qla_stats.output_requests++; 2790 2791 /* Only one dsd is available for bidirectional IOCB, remaining dsds 2792 * are bundled in continuation iocb 2793 */ 2794 avail_dsds = 1; 2795 cur_dsd = (uint32_t *)&cmd_pkt->fcp_data_dseg_address; 2796 2797 index = 0; 2798 2799 for_each_sg(bsg_job->request_payload.sg_list, sg, 2800 bsg_job->request_payload.sg_cnt, index) { 2801 dma_addr_t sle_dma; 2802 cont_a64_entry_t *cont_pkt; 2803 2804 /* Allocate additional continuation packets */ 2805 if (avail_dsds == 0) { 2806 /* Continuation type 1 IOCB can accomodate 2807 * 5 DSDS 2808 */ 2809 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req); 2810 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address; 2811 avail_dsds = 5; 2812 entry_count++; 2813 } 2814 sle_dma = sg_dma_address(sg); 2815 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 2816 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 2817 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 2818 avail_dsds--; 2819 } 2820 /* For read request DSD will always goes to continuation IOCB 2821 * and follow the write DSD. If there is room on the current IOCB 2822 * then it is added to that IOCB else new continuation IOCB is 2823 * allocated. 2824 */ 2825 for_each_sg(bsg_job->reply_payload.sg_list, sg, 2826 bsg_job->reply_payload.sg_cnt, index) { 2827 dma_addr_t sle_dma; 2828 cont_a64_entry_t *cont_pkt; 2829 2830 /* Allocate additional continuation packets */ 2831 if (avail_dsds == 0) { 2832 /* Continuation type 1 IOCB can accomodate 2833 * 5 DSDS 2834 */ 2835 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req); 2836 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address; 2837 avail_dsds = 5; 2838 entry_count++; 2839 } 2840 sle_dma = sg_dma_address(sg); 2841 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 2842 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 2843 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 2844 avail_dsds--; 2845 } 2846 /* This value should be same as number of IOCB required for this cmd */ 2847 cmd_pkt->entry_count = entry_count; 2848 } 2849 2850 int 2851 qla2x00_start_bidir(srb_t *sp, struct scsi_qla_host *vha, uint32_t tot_dsds) 2852 { 2853 2854 struct qla_hw_data *ha = vha->hw; 2855 unsigned long flags; 2856 uint32_t handle; 2857 uint32_t index; 2858 uint16_t req_cnt; 2859 uint16_t cnt; 2860 uint32_t *clr_ptr; 2861 struct cmd_bidir *cmd_pkt = NULL; 2862 struct rsp_que *rsp; 2863 struct req_que *req; 2864 int rval = EXT_STATUS_OK; 2865 2866 rval = QLA_SUCCESS; 2867 2868 rsp = ha->rsp_q_map[0]; 2869 req = vha->req; 2870 2871 /* Send marker if required */ 2872 if (vha->marker_needed != 0) { 2873 if (qla2x00_marker(vha, req, 2874 rsp, 0, 0, MK_SYNC_ALL) != QLA_SUCCESS) 2875 return EXT_STATUS_MAILBOX; 2876 vha->marker_needed = 0; 2877 } 2878 2879 /* Acquire ring specific lock */ 2880 spin_lock_irqsave(&ha->hardware_lock, flags); 2881 2882 /* Check for room in outstanding command list. */ 2883 handle = req->current_outstanding_cmd; 2884 for (index = 1; index < req->num_outstanding_cmds; index++) { 2885 handle++; 2886 if (handle == req->num_outstanding_cmds) 2887 handle = 1; 2888 if (!req->outstanding_cmds[handle]) 2889 break; 2890 } 2891 2892 if (index == req->num_outstanding_cmds) { 2893 rval = EXT_STATUS_BUSY; 2894 goto queuing_error; 2895 } 2896 2897 /* Calculate number of IOCB required */ 2898 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds); 2899 2900 /* Check for room on request queue. */ 2901 if (req->cnt < req_cnt + 2) { 2902 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr : 2903 RD_REG_DWORD_RELAXED(req->req_q_out); 2904 if (req->ring_index < cnt) 2905 req->cnt = cnt - req->ring_index; 2906 else 2907 req->cnt = req->length - 2908 (req->ring_index - cnt); 2909 } 2910 if (req->cnt < req_cnt + 2) { 2911 rval = EXT_STATUS_BUSY; 2912 goto queuing_error; 2913 } 2914 2915 cmd_pkt = (struct cmd_bidir *)req->ring_ptr; 2916 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 2917 2918 /* Zero out remaining portion of packet. */ 2919 /* tagged queuing modifier -- default is TSK_SIMPLE (0).*/ 2920 clr_ptr = (uint32_t *)cmd_pkt + 2; 2921 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 2922 2923 /* Set NPORT-ID (of vha)*/ 2924 cmd_pkt->nport_handle = cpu_to_le16(vha->self_login_loop_id); 2925 cmd_pkt->port_id[0] = vha->d_id.b.al_pa; 2926 cmd_pkt->port_id[1] = vha->d_id.b.area; 2927 cmd_pkt->port_id[2] = vha->d_id.b.domain; 2928 2929 qla25xx_build_bidir_iocb(sp, vha, cmd_pkt, tot_dsds); 2930 cmd_pkt->entry_status = (uint8_t) rsp->id; 2931 /* Build command packet. */ 2932 req->current_outstanding_cmd = handle; 2933 req->outstanding_cmds[handle] = sp; 2934 sp->handle = handle; 2935 req->cnt -= req_cnt; 2936 2937 /* Send the command to the firmware */ 2938 wmb(); 2939 qla2x00_start_iocbs(vha, req); 2940 queuing_error: 2941 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2942 return rval; 2943 } 2944