1 /* 2 * QLogic Fibre Channel HBA Driver 3 * Copyright (c) 2003-2011 QLogic Corporation 4 * 5 * See LICENSE.qla2xxx for copyright and licensing details. 6 */ 7 #include "qla_def.h" 8 9 #include <linux/blkdev.h> 10 #include <linux/delay.h> 11 12 #include <scsi/scsi_tcq.h> 13 14 static void qla25xx_set_que(srb_t *, struct rsp_que **); 15 /** 16 * qla2x00_get_cmd_direction() - Determine control_flag data direction. 17 * @cmd: SCSI command 18 * 19 * Returns the proper CF_* direction based on CDB. 20 */ 21 static inline uint16_t 22 qla2x00_get_cmd_direction(srb_t *sp) 23 { 24 uint16_t cflags; 25 26 cflags = 0; 27 28 /* Set transfer direction */ 29 if (sp->cmd->sc_data_direction == DMA_TO_DEVICE) { 30 cflags = CF_WRITE; 31 sp->fcport->vha->hw->qla_stats.output_bytes += 32 scsi_bufflen(sp->cmd); 33 } else if (sp->cmd->sc_data_direction == DMA_FROM_DEVICE) { 34 cflags = CF_READ; 35 sp->fcport->vha->hw->qla_stats.input_bytes += 36 scsi_bufflen(sp->cmd); 37 } 38 return (cflags); 39 } 40 41 /** 42 * qla2x00_calc_iocbs_32() - Determine number of Command Type 2 and 43 * Continuation Type 0 IOCBs to allocate. 44 * 45 * @dsds: number of data segment decriptors needed 46 * 47 * Returns the number of IOCB entries needed to store @dsds. 48 */ 49 uint16_t 50 qla2x00_calc_iocbs_32(uint16_t dsds) 51 { 52 uint16_t iocbs; 53 54 iocbs = 1; 55 if (dsds > 3) { 56 iocbs += (dsds - 3) / 7; 57 if ((dsds - 3) % 7) 58 iocbs++; 59 } 60 return (iocbs); 61 } 62 63 /** 64 * qla2x00_calc_iocbs_64() - Determine number of Command Type 3 and 65 * Continuation Type 1 IOCBs to allocate. 66 * 67 * @dsds: number of data segment decriptors needed 68 * 69 * Returns the number of IOCB entries needed to store @dsds. 70 */ 71 uint16_t 72 qla2x00_calc_iocbs_64(uint16_t dsds) 73 { 74 uint16_t iocbs; 75 76 iocbs = 1; 77 if (dsds > 2) { 78 iocbs += (dsds - 2) / 5; 79 if ((dsds - 2) % 5) 80 iocbs++; 81 } 82 return (iocbs); 83 } 84 85 /** 86 * qla2x00_prep_cont_type0_iocb() - Initialize a Continuation Type 0 IOCB. 87 * @ha: HA context 88 * 89 * Returns a pointer to the Continuation Type 0 IOCB packet. 90 */ 91 static inline cont_entry_t * 92 qla2x00_prep_cont_type0_iocb(struct scsi_qla_host *vha) 93 { 94 cont_entry_t *cont_pkt; 95 struct req_que *req = vha->req; 96 /* Adjust ring index. */ 97 req->ring_index++; 98 if (req->ring_index == req->length) { 99 req->ring_index = 0; 100 req->ring_ptr = req->ring; 101 } else { 102 req->ring_ptr++; 103 } 104 105 cont_pkt = (cont_entry_t *)req->ring_ptr; 106 107 /* Load packet defaults. */ 108 *((uint32_t *)(&cont_pkt->entry_type)) = 109 __constant_cpu_to_le32(CONTINUE_TYPE); 110 111 return (cont_pkt); 112 } 113 114 /** 115 * qla2x00_prep_cont_type1_iocb() - Initialize a Continuation Type 1 IOCB. 116 * @ha: HA context 117 * 118 * Returns a pointer to the continuation type 1 IOCB packet. 119 */ 120 static inline cont_a64_entry_t * 121 qla2x00_prep_cont_type1_iocb(scsi_qla_host_t *vha, struct req_que *req) 122 { 123 cont_a64_entry_t *cont_pkt; 124 125 /* Adjust ring index. */ 126 req->ring_index++; 127 if (req->ring_index == req->length) { 128 req->ring_index = 0; 129 req->ring_ptr = req->ring; 130 } else { 131 req->ring_ptr++; 132 } 133 134 cont_pkt = (cont_a64_entry_t *)req->ring_ptr; 135 136 /* Load packet defaults. */ 137 *((uint32_t *)(&cont_pkt->entry_type)) = 138 __constant_cpu_to_le32(CONTINUE_A64_TYPE); 139 140 return (cont_pkt); 141 } 142 143 static inline int 144 qla24xx_configure_prot_mode(srb_t *sp, uint16_t *fw_prot_opts) 145 { 146 uint8_t guard = scsi_host_get_guard(sp->cmd->device->host); 147 148 /* We only support T10 DIF right now */ 149 if (guard != SHOST_DIX_GUARD_CRC) { 150 ql_dbg(ql_dbg_io, sp->fcport->vha, 0x3007, 151 "Unsupported guard: %d for cmd=%p.\n", guard, sp->cmd); 152 return 0; 153 } 154 155 /* We always use DIFF Bundling for best performance */ 156 *fw_prot_opts = 0; 157 158 /* Translate SCSI opcode to a protection opcode */ 159 switch (scsi_get_prot_op(sp->cmd)) { 160 case SCSI_PROT_READ_STRIP: 161 *fw_prot_opts |= PO_MODE_DIF_REMOVE; 162 break; 163 case SCSI_PROT_WRITE_INSERT: 164 *fw_prot_opts |= PO_MODE_DIF_INSERT; 165 break; 166 case SCSI_PROT_READ_INSERT: 167 *fw_prot_opts |= PO_MODE_DIF_INSERT; 168 break; 169 case SCSI_PROT_WRITE_STRIP: 170 *fw_prot_opts |= PO_MODE_DIF_REMOVE; 171 break; 172 case SCSI_PROT_READ_PASS: 173 *fw_prot_opts |= PO_MODE_DIF_PASS; 174 break; 175 case SCSI_PROT_WRITE_PASS: 176 *fw_prot_opts |= PO_MODE_DIF_PASS; 177 break; 178 default: /* Normal Request */ 179 *fw_prot_opts |= PO_MODE_DIF_PASS; 180 break; 181 } 182 183 return scsi_prot_sg_count(sp->cmd); 184 } 185 186 /* 187 * qla2x00_build_scsi_iocbs_32() - Build IOCB command utilizing 32bit 188 * capable IOCB types. 189 * 190 * @sp: SRB command to process 191 * @cmd_pkt: Command type 2 IOCB 192 * @tot_dsds: Total number of segments to transfer 193 */ 194 void qla2x00_build_scsi_iocbs_32(srb_t *sp, cmd_entry_t *cmd_pkt, 195 uint16_t tot_dsds) 196 { 197 uint16_t avail_dsds; 198 uint32_t *cur_dsd; 199 scsi_qla_host_t *vha; 200 struct scsi_cmnd *cmd; 201 struct scatterlist *sg; 202 int i; 203 204 cmd = sp->cmd; 205 206 /* Update entry type to indicate Command Type 2 IOCB */ 207 *((uint32_t *)(&cmd_pkt->entry_type)) = 208 __constant_cpu_to_le32(COMMAND_TYPE); 209 210 /* No data transfer */ 211 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) { 212 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 213 return; 214 } 215 216 vha = sp->fcport->vha; 217 cmd_pkt->control_flags |= cpu_to_le16(qla2x00_get_cmd_direction(sp)); 218 219 /* Three DSDs are available in the Command Type 2 IOCB */ 220 avail_dsds = 3; 221 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address; 222 223 /* Load data segments */ 224 scsi_for_each_sg(cmd, sg, tot_dsds, i) { 225 cont_entry_t *cont_pkt; 226 227 /* Allocate additional continuation packets? */ 228 if (avail_dsds == 0) { 229 /* 230 * Seven DSDs are available in the Continuation 231 * Type 0 IOCB. 232 */ 233 cont_pkt = qla2x00_prep_cont_type0_iocb(vha); 234 cur_dsd = (uint32_t *)&cont_pkt->dseg_0_address; 235 avail_dsds = 7; 236 } 237 238 *cur_dsd++ = cpu_to_le32(sg_dma_address(sg)); 239 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 240 avail_dsds--; 241 } 242 } 243 244 /** 245 * qla2x00_build_scsi_iocbs_64() - Build IOCB command utilizing 64bit 246 * capable IOCB types. 247 * 248 * @sp: SRB command to process 249 * @cmd_pkt: Command type 3 IOCB 250 * @tot_dsds: Total number of segments to transfer 251 */ 252 void qla2x00_build_scsi_iocbs_64(srb_t *sp, cmd_entry_t *cmd_pkt, 253 uint16_t tot_dsds) 254 { 255 uint16_t avail_dsds; 256 uint32_t *cur_dsd; 257 scsi_qla_host_t *vha; 258 struct scsi_cmnd *cmd; 259 struct scatterlist *sg; 260 int i; 261 262 cmd = sp->cmd; 263 264 /* Update entry type to indicate Command Type 3 IOCB */ 265 *((uint32_t *)(&cmd_pkt->entry_type)) = 266 __constant_cpu_to_le32(COMMAND_A64_TYPE); 267 268 /* No data transfer */ 269 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) { 270 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 271 return; 272 } 273 274 vha = sp->fcport->vha; 275 cmd_pkt->control_flags |= cpu_to_le16(qla2x00_get_cmd_direction(sp)); 276 277 /* Two DSDs are available in the Command Type 3 IOCB */ 278 avail_dsds = 2; 279 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address; 280 281 /* Load data segments */ 282 scsi_for_each_sg(cmd, sg, tot_dsds, i) { 283 dma_addr_t sle_dma; 284 cont_a64_entry_t *cont_pkt; 285 286 /* Allocate additional continuation packets? */ 287 if (avail_dsds == 0) { 288 /* 289 * Five DSDs are available in the Continuation 290 * Type 1 IOCB. 291 */ 292 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req); 293 cur_dsd = (uint32_t *)cont_pkt->dseg_0_address; 294 avail_dsds = 5; 295 } 296 297 sle_dma = sg_dma_address(sg); 298 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 299 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 300 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 301 avail_dsds--; 302 } 303 } 304 305 /** 306 * qla2x00_start_scsi() - Send a SCSI command to the ISP 307 * @sp: command to send to the ISP 308 * 309 * Returns non-zero if a failure occurred, else zero. 310 */ 311 int 312 qla2x00_start_scsi(srb_t *sp) 313 { 314 int ret, nseg; 315 unsigned long flags; 316 scsi_qla_host_t *vha; 317 struct scsi_cmnd *cmd; 318 uint32_t *clr_ptr; 319 uint32_t index; 320 uint32_t handle; 321 cmd_entry_t *cmd_pkt; 322 uint16_t cnt; 323 uint16_t req_cnt; 324 uint16_t tot_dsds; 325 struct device_reg_2xxx __iomem *reg; 326 struct qla_hw_data *ha; 327 struct req_que *req; 328 struct rsp_que *rsp; 329 char tag[2]; 330 331 /* Setup device pointers. */ 332 ret = 0; 333 vha = sp->fcport->vha; 334 ha = vha->hw; 335 reg = &ha->iobase->isp; 336 cmd = sp->cmd; 337 req = ha->req_q_map[0]; 338 rsp = ha->rsp_q_map[0]; 339 /* So we know we haven't pci_map'ed anything yet */ 340 tot_dsds = 0; 341 342 /* Send marker if required */ 343 if (vha->marker_needed != 0) { 344 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) != 345 QLA_SUCCESS) { 346 return (QLA_FUNCTION_FAILED); 347 } 348 vha->marker_needed = 0; 349 } 350 351 /* Acquire ring specific lock */ 352 spin_lock_irqsave(&ha->hardware_lock, flags); 353 354 /* Check for room in outstanding command list. */ 355 handle = req->current_outstanding_cmd; 356 for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) { 357 handle++; 358 if (handle == MAX_OUTSTANDING_COMMANDS) 359 handle = 1; 360 if (!req->outstanding_cmds[handle]) 361 break; 362 } 363 if (index == MAX_OUTSTANDING_COMMANDS) 364 goto queuing_error; 365 366 /* Map the sg table so we have an accurate count of sg entries needed */ 367 if (scsi_sg_count(cmd)) { 368 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd), 369 scsi_sg_count(cmd), cmd->sc_data_direction); 370 if (unlikely(!nseg)) 371 goto queuing_error; 372 } else 373 nseg = 0; 374 375 tot_dsds = nseg; 376 377 /* Calculate the number of request entries needed. */ 378 req_cnt = ha->isp_ops->calc_req_entries(tot_dsds); 379 if (req->cnt < (req_cnt + 2)) { 380 cnt = RD_REG_WORD_RELAXED(ISP_REQ_Q_OUT(ha, reg)); 381 if (req->ring_index < cnt) 382 req->cnt = cnt - req->ring_index; 383 else 384 req->cnt = req->length - 385 (req->ring_index - cnt); 386 } 387 if (req->cnt < (req_cnt + 2)) 388 goto queuing_error; 389 390 /* Build command packet */ 391 req->current_outstanding_cmd = handle; 392 req->outstanding_cmds[handle] = sp; 393 sp->handle = handle; 394 sp->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(sp->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 } 425 426 /* Load SCSI command packet. */ 427 memcpy(cmd_pkt->scsi_cdb, cmd->cmnd, cmd->cmd_len); 428 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); 429 430 /* Build IOCB segments */ 431 ha->isp_ops->build_iocbs(sp, cmd_pkt, tot_dsds); 432 433 /* Set total data segment count. */ 434 cmd_pkt->entry_count = (uint8_t)req_cnt; 435 wmb(); 436 437 /* Adjust ring index. */ 438 req->ring_index++; 439 if (req->ring_index == req->length) { 440 req->ring_index = 0; 441 req->ring_ptr = req->ring; 442 } else 443 req->ring_ptr++; 444 445 sp->flags |= SRB_DMA_VALID; 446 447 /* Set chip new ring index. */ 448 WRT_REG_WORD(ISP_REQ_Q_IN(ha, reg), req->ring_index); 449 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, reg)); /* PCI Posting. */ 450 451 /* Manage unprocessed RIO/ZIO commands in response queue. */ 452 if (vha->flags.process_response_queue && 453 rsp->ring_ptr->signature != RESPONSE_PROCESSED) 454 qla2x00_process_response_queue(rsp); 455 456 spin_unlock_irqrestore(&ha->hardware_lock, flags); 457 return (QLA_SUCCESS); 458 459 queuing_error: 460 if (tot_dsds) 461 scsi_dma_unmap(cmd); 462 463 spin_unlock_irqrestore(&ha->hardware_lock, flags); 464 465 return (QLA_FUNCTION_FAILED); 466 } 467 468 /** 469 * qla2x00_start_iocbs() - Execute the IOCB command 470 */ 471 static void 472 qla2x00_start_iocbs(struct scsi_qla_host *vha, struct req_que *req) 473 { 474 struct qla_hw_data *ha = vha->hw; 475 device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id); 476 struct device_reg_2xxx __iomem *ioreg = &ha->iobase->isp; 477 478 if (IS_QLA82XX(ha)) { 479 qla82xx_start_iocbs(vha); 480 } else { 481 /* Adjust ring index. */ 482 req->ring_index++; 483 if (req->ring_index == req->length) { 484 req->ring_index = 0; 485 req->ring_ptr = req->ring; 486 } else 487 req->ring_ptr++; 488 489 /* Set chip new ring index. */ 490 if (ha->mqenable) { 491 WRT_REG_DWORD(®->isp25mq.req_q_in, req->ring_index); 492 RD_REG_DWORD(&ioreg->hccr); 493 } else if (IS_FWI2_CAPABLE(ha)) { 494 WRT_REG_DWORD(®->isp24.req_q_in, req->ring_index); 495 RD_REG_DWORD_RELAXED(®->isp24.req_q_in); 496 } else { 497 WRT_REG_WORD(ISP_REQ_Q_IN(ha, ®->isp), 498 req->ring_index); 499 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, ®->isp)); 500 } 501 } 502 } 503 504 /** 505 * qla2x00_marker() - Send a marker IOCB to the firmware. 506 * @ha: HA context 507 * @loop_id: loop ID 508 * @lun: LUN 509 * @type: marker modifier 510 * 511 * Can be called from both normal and interrupt context. 512 * 513 * Returns non-zero if a failure occurred, else zero. 514 */ 515 static int 516 __qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req, 517 struct rsp_que *rsp, uint16_t loop_id, 518 uint16_t lun, uint8_t type) 519 { 520 mrk_entry_t *mrk; 521 struct mrk_entry_24xx *mrk24; 522 struct qla_hw_data *ha = vha->hw; 523 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 524 525 mrk24 = NULL; 526 req = ha->req_q_map[0]; 527 mrk = (mrk_entry_t *)qla2x00_alloc_iocbs(vha, 0); 528 if (mrk == NULL) { 529 ql_log(ql_log_warn, base_vha, 0x3026, 530 "Failed to allocate Marker IOCB.\n"); 531 532 return (QLA_FUNCTION_FAILED); 533 } 534 535 mrk->entry_type = MARKER_TYPE; 536 mrk->modifier = type; 537 if (type != MK_SYNC_ALL) { 538 if (IS_FWI2_CAPABLE(ha)) { 539 mrk24 = (struct mrk_entry_24xx *) mrk; 540 mrk24->nport_handle = cpu_to_le16(loop_id); 541 mrk24->lun[1] = LSB(lun); 542 mrk24->lun[2] = MSB(lun); 543 host_to_fcp_swap(mrk24->lun, sizeof(mrk24->lun)); 544 mrk24->vp_index = vha->vp_idx; 545 mrk24->handle = MAKE_HANDLE(req->id, mrk24->handle); 546 } else { 547 SET_TARGET_ID(ha, mrk->target, loop_id); 548 mrk->lun = cpu_to_le16(lun); 549 } 550 } 551 wmb(); 552 553 qla2x00_start_iocbs(vha, req); 554 555 return (QLA_SUCCESS); 556 } 557 558 int 559 qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req, 560 struct rsp_que *rsp, uint16_t loop_id, uint16_t lun, 561 uint8_t type) 562 { 563 int ret; 564 unsigned long flags = 0; 565 566 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 567 ret = __qla2x00_marker(vha, req, rsp, loop_id, lun, type); 568 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 569 570 return (ret); 571 } 572 573 /** 574 * qla24xx_calc_iocbs() - Determine number of Command Type 3 and 575 * Continuation Type 1 IOCBs to allocate. 576 * 577 * @dsds: number of data segment decriptors needed 578 * 579 * Returns the number of IOCB entries needed to store @dsds. 580 */ 581 inline uint16_t 582 qla24xx_calc_iocbs(scsi_qla_host_t *vha, uint16_t dsds) 583 { 584 uint16_t iocbs; 585 586 iocbs = 1; 587 if (dsds > 1) { 588 iocbs += (dsds - 1) / 5; 589 if ((dsds - 1) % 5) 590 iocbs++; 591 } 592 return iocbs; 593 } 594 595 static inline int 596 qla24xx_build_scsi_type_6_iocbs(srb_t *sp, struct cmd_type_6 *cmd_pkt, 597 uint16_t tot_dsds) 598 { 599 uint32_t *cur_dsd = NULL; 600 scsi_qla_host_t *vha; 601 struct qla_hw_data *ha; 602 struct scsi_cmnd *cmd; 603 struct scatterlist *cur_seg; 604 uint32_t *dsd_seg; 605 void *next_dsd; 606 uint8_t avail_dsds; 607 uint8_t first_iocb = 1; 608 uint32_t dsd_list_len; 609 struct dsd_dma *dsd_ptr; 610 struct ct6_dsd *ctx; 611 612 cmd = sp->cmd; 613 614 /* Update entry type to indicate Command Type 3 IOCB */ 615 *((uint32_t *)(&cmd_pkt->entry_type)) = 616 __constant_cpu_to_le32(COMMAND_TYPE_6); 617 618 /* No data transfer */ 619 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) { 620 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 621 return 0; 622 } 623 624 vha = sp->fcport->vha; 625 ha = vha->hw; 626 627 /* Set transfer direction */ 628 if (cmd->sc_data_direction == DMA_TO_DEVICE) { 629 cmd_pkt->control_flags = 630 __constant_cpu_to_le16(CF_WRITE_DATA); 631 ha->qla_stats.output_bytes += scsi_bufflen(cmd); 632 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) { 633 cmd_pkt->control_flags = 634 __constant_cpu_to_le16(CF_READ_DATA); 635 ha->qla_stats.input_bytes += scsi_bufflen(cmd); 636 } 637 638 cur_seg = scsi_sglist(cmd); 639 ctx = sp->ctx; 640 641 while (tot_dsds) { 642 avail_dsds = (tot_dsds > QLA_DSDS_PER_IOCB) ? 643 QLA_DSDS_PER_IOCB : tot_dsds; 644 tot_dsds -= avail_dsds; 645 dsd_list_len = (avail_dsds + 1) * QLA_DSD_SIZE; 646 647 dsd_ptr = list_first_entry(&ha->gbl_dsd_list, 648 struct dsd_dma, list); 649 next_dsd = dsd_ptr->dsd_addr; 650 list_del(&dsd_ptr->list); 651 ha->gbl_dsd_avail--; 652 list_add_tail(&dsd_ptr->list, &ctx->dsd_list); 653 ctx->dsd_use_cnt++; 654 ha->gbl_dsd_inuse++; 655 656 if (first_iocb) { 657 first_iocb = 0; 658 dsd_seg = (uint32_t *)&cmd_pkt->fcp_data_dseg_address; 659 *dsd_seg++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 660 *dsd_seg++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 661 cmd_pkt->fcp_data_dseg_len = cpu_to_le32(dsd_list_len); 662 } else { 663 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 664 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 665 *cur_dsd++ = cpu_to_le32(dsd_list_len); 666 } 667 cur_dsd = (uint32_t *)next_dsd; 668 while (avail_dsds) { 669 dma_addr_t sle_dma; 670 671 sle_dma = sg_dma_address(cur_seg); 672 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 673 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 674 *cur_dsd++ = cpu_to_le32(sg_dma_len(cur_seg)); 675 cur_seg = sg_next(cur_seg); 676 avail_dsds--; 677 } 678 } 679 680 /* Null termination */ 681 *cur_dsd++ = 0; 682 *cur_dsd++ = 0; 683 *cur_dsd++ = 0; 684 cmd_pkt->control_flags |= CF_DATA_SEG_DESCR_ENABLE; 685 return 0; 686 } 687 688 /* 689 * qla24xx_calc_dsd_lists() - Determine number of DSD list required 690 * for Command Type 6. 691 * 692 * @dsds: number of data segment decriptors needed 693 * 694 * Returns the number of dsd list needed to store @dsds. 695 */ 696 inline uint16_t 697 qla24xx_calc_dsd_lists(uint16_t dsds) 698 { 699 uint16_t dsd_lists = 0; 700 701 dsd_lists = (dsds/QLA_DSDS_PER_IOCB); 702 if (dsds % QLA_DSDS_PER_IOCB) 703 dsd_lists++; 704 return dsd_lists; 705 } 706 707 708 /** 709 * qla24xx_build_scsi_iocbs() - Build IOCB command utilizing Command Type 7 710 * IOCB types. 711 * 712 * @sp: SRB command to process 713 * @cmd_pkt: Command type 3 IOCB 714 * @tot_dsds: Total number of segments to transfer 715 */ 716 inline void 717 qla24xx_build_scsi_iocbs(srb_t *sp, struct cmd_type_7 *cmd_pkt, 718 uint16_t tot_dsds) 719 { 720 uint16_t avail_dsds; 721 uint32_t *cur_dsd; 722 scsi_qla_host_t *vha; 723 struct scsi_cmnd *cmd; 724 struct scatterlist *sg; 725 int i; 726 struct req_que *req; 727 728 cmd = sp->cmd; 729 730 /* Update entry type to indicate Command Type 3 IOCB */ 731 *((uint32_t *)(&cmd_pkt->entry_type)) = 732 __constant_cpu_to_le32(COMMAND_TYPE_7); 733 734 /* No data transfer */ 735 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) { 736 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 737 return; 738 } 739 740 vha = sp->fcport->vha; 741 req = vha->req; 742 743 /* Set transfer direction */ 744 if (cmd->sc_data_direction == DMA_TO_DEVICE) { 745 cmd_pkt->task_mgmt_flags = 746 __constant_cpu_to_le16(TMF_WRITE_DATA); 747 sp->fcport->vha->hw->qla_stats.output_bytes += 748 scsi_bufflen(sp->cmd); 749 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) { 750 cmd_pkt->task_mgmt_flags = 751 __constant_cpu_to_le16(TMF_READ_DATA); 752 sp->fcport->vha->hw->qla_stats.input_bytes += 753 scsi_bufflen(sp->cmd); 754 } 755 756 /* One DSD is available in the Command Type 3 IOCB */ 757 avail_dsds = 1; 758 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address; 759 760 /* Load data segments */ 761 762 scsi_for_each_sg(cmd, sg, tot_dsds, i) { 763 dma_addr_t sle_dma; 764 cont_a64_entry_t *cont_pkt; 765 766 /* Allocate additional continuation packets? */ 767 if (avail_dsds == 0) { 768 /* 769 * Five DSDs are available in the Continuation 770 * Type 1 IOCB. 771 */ 772 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req); 773 cur_dsd = (uint32_t *)cont_pkt->dseg_0_address; 774 avail_dsds = 5; 775 } 776 777 sle_dma = sg_dma_address(sg); 778 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 779 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 780 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 781 avail_dsds--; 782 } 783 } 784 785 struct fw_dif_context { 786 uint32_t ref_tag; 787 uint16_t app_tag; 788 uint8_t ref_tag_mask[4]; /* Validation/Replacement Mask*/ 789 uint8_t app_tag_mask[2]; /* Validation/Replacement Mask*/ 790 }; 791 792 /* 793 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command 794 * 795 */ 796 static inline void 797 qla24xx_set_t10dif_tags(srb_t *sp, struct fw_dif_context *pkt, 798 unsigned int protcnt) 799 { 800 struct scsi_cmnd *cmd = sp->cmd; 801 scsi_qla_host_t *vha = shost_priv(cmd->device->host); 802 803 switch (scsi_get_prot_type(cmd)) { 804 case SCSI_PROT_DIF_TYPE0: 805 /* 806 * No check for ql2xenablehba_err_chk, as it would be an 807 * I/O error if hba tag generation is not done. 808 */ 809 pkt->ref_tag = cpu_to_le32((uint32_t) 810 (0xffffffff & scsi_get_lba(cmd))); 811 812 if (!qla2x00_hba_err_chk_enabled(sp)) 813 break; 814 815 pkt->ref_tag_mask[0] = 0xff; 816 pkt->ref_tag_mask[1] = 0xff; 817 pkt->ref_tag_mask[2] = 0xff; 818 pkt->ref_tag_mask[3] = 0xff; 819 break; 820 821 /* 822 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to 823 * match LBA in CDB + N 824 */ 825 case SCSI_PROT_DIF_TYPE2: 826 pkt->app_tag = __constant_cpu_to_le16(0); 827 pkt->app_tag_mask[0] = 0x0; 828 pkt->app_tag_mask[1] = 0x0; 829 830 pkt->ref_tag = cpu_to_le32((uint32_t) 831 (0xffffffff & scsi_get_lba(cmd))); 832 833 if (!qla2x00_hba_err_chk_enabled(sp)) 834 break; 835 836 /* enable ALL bytes of the ref tag */ 837 pkt->ref_tag_mask[0] = 0xff; 838 pkt->ref_tag_mask[1] = 0xff; 839 pkt->ref_tag_mask[2] = 0xff; 840 pkt->ref_tag_mask[3] = 0xff; 841 break; 842 843 /* For Type 3 protection: 16 bit GUARD only */ 844 case SCSI_PROT_DIF_TYPE3: 845 pkt->ref_tag_mask[0] = pkt->ref_tag_mask[1] = 846 pkt->ref_tag_mask[2] = pkt->ref_tag_mask[3] = 847 0x00; 848 break; 849 850 /* 851 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and 852 * 16 bit app tag. 853 */ 854 case SCSI_PROT_DIF_TYPE1: 855 pkt->ref_tag = cpu_to_le32((uint32_t) 856 (0xffffffff & scsi_get_lba(cmd))); 857 pkt->app_tag = __constant_cpu_to_le16(0); 858 pkt->app_tag_mask[0] = 0x0; 859 pkt->app_tag_mask[1] = 0x0; 860 861 if (!qla2x00_hba_err_chk_enabled(sp)) 862 break; 863 864 /* enable ALL bytes of the ref tag */ 865 pkt->ref_tag_mask[0] = 0xff; 866 pkt->ref_tag_mask[1] = 0xff; 867 pkt->ref_tag_mask[2] = 0xff; 868 pkt->ref_tag_mask[3] = 0xff; 869 break; 870 } 871 872 ql_dbg(ql_dbg_io, vha, 0x3009, 873 "Setting protection Tags: (BIG) ref tag = 0x%x, app tag = 0x%x, " 874 "prot SG count %d, cmd lba 0x%x, prot_type=%u cmd=%p.\n", 875 pkt->ref_tag, pkt->app_tag, protcnt, (int)scsi_get_lba(cmd), 876 scsi_get_prot_type(cmd), cmd); 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 static 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) 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; 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 = sp->cmd; 956 957 prot_int = cmd->device->sector_size; 958 959 memset(&sgx, 0, sizeof(struct qla2_sgx)); 960 sgx.tot_bytes = scsi_bufflen(sp->cmd); 961 sgx.cur_sg = scsi_sglist(sp->cmd); 962 sgx.sp = sp; 963 964 sg_prot = scsi_prot_sglist(sp->cmd); 965 966 while (qla24xx_get_one_block_sg(prot_int, &sgx, &partial)) { 967 968 sle_dma = sgx.dma_addr; 969 sle_dma_len = sgx.dma_len; 970 alloc_and_fill: 971 /* Allocate additional continuation packets? */ 972 if (avail_dsds == 0) { 973 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ? 974 QLA_DSDS_PER_IOCB : used_dsds; 975 dsd_list_len = (avail_dsds + 1) * 12; 976 used_dsds -= avail_dsds; 977 978 /* allocate tracking DS */ 979 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC); 980 if (!dsd_ptr) 981 return 1; 982 983 /* allocate new list */ 984 dsd_ptr->dsd_addr = next_dsd = 985 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, 986 &dsd_ptr->dsd_list_dma); 987 988 if (!next_dsd) { 989 /* 990 * Need to cleanup only this dsd_ptr, rest 991 * will be done by sp_free_dma() 992 */ 993 kfree(dsd_ptr); 994 return 1; 995 } 996 997 list_add_tail(&dsd_ptr->list, 998 &((struct crc_context *)sp->ctx)->dsd_list); 999 1000 sp->flags |= SRB_CRC_CTX_DSD_VALID; 1001 1002 /* add new list to cmd iocb or last list */ 1003 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 1004 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 1005 *cur_dsd++ = dsd_list_len; 1006 cur_dsd = (uint32_t *)next_dsd; 1007 } 1008 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 1009 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 1010 *cur_dsd++ = cpu_to_le32(sle_dma_len); 1011 avail_dsds--; 1012 1013 if (partial == 0) { 1014 /* Got a full protection interval */ 1015 sle_dma = sg_dma_address(sg_prot) + tot_prot_dma_len; 1016 sle_dma_len = 8; 1017 1018 tot_prot_dma_len += sle_dma_len; 1019 if (tot_prot_dma_len == sg_dma_len(sg_prot)) { 1020 tot_prot_dma_len = 0; 1021 sg_prot = sg_next(sg_prot); 1022 } 1023 1024 partial = 1; /* So as to not re-enter this block */ 1025 goto alloc_and_fill; 1026 } 1027 } 1028 /* Null termination */ 1029 *cur_dsd++ = 0; 1030 *cur_dsd++ = 0; 1031 *cur_dsd++ = 0; 1032 return 0; 1033 } 1034 1035 static int 1036 qla24xx_walk_and_build_sglist(struct qla_hw_data *ha, srb_t *sp, uint32_t *dsd, 1037 uint16_t tot_dsds) 1038 { 1039 void *next_dsd; 1040 uint8_t avail_dsds = 0; 1041 uint32_t dsd_list_len; 1042 struct dsd_dma *dsd_ptr; 1043 struct scatterlist *sg; 1044 uint32_t *cur_dsd = dsd; 1045 int i; 1046 uint16_t used_dsds = tot_dsds; 1047 scsi_qla_host_t *vha = shost_priv(sp->cmd->device->host); 1048 1049 uint8_t *cp; 1050 1051 scsi_for_each_sg(sp->cmd, sg, tot_dsds, i) { 1052 dma_addr_t sle_dma; 1053 1054 /* Allocate additional continuation packets? */ 1055 if (avail_dsds == 0) { 1056 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ? 1057 QLA_DSDS_PER_IOCB : used_dsds; 1058 dsd_list_len = (avail_dsds + 1) * 12; 1059 used_dsds -= avail_dsds; 1060 1061 /* allocate tracking DS */ 1062 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC); 1063 if (!dsd_ptr) 1064 return 1; 1065 1066 /* allocate new list */ 1067 dsd_ptr->dsd_addr = next_dsd = 1068 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, 1069 &dsd_ptr->dsd_list_dma); 1070 1071 if (!next_dsd) { 1072 /* 1073 * Need to cleanup only this dsd_ptr, rest 1074 * will be done by sp_free_dma() 1075 */ 1076 kfree(dsd_ptr); 1077 return 1; 1078 } 1079 1080 list_add_tail(&dsd_ptr->list, 1081 &((struct crc_context *)sp->ctx)->dsd_list); 1082 1083 sp->flags |= SRB_CRC_CTX_DSD_VALID; 1084 1085 /* add new list to cmd iocb or last list */ 1086 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 1087 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 1088 *cur_dsd++ = dsd_list_len; 1089 cur_dsd = (uint32_t *)next_dsd; 1090 } 1091 sle_dma = sg_dma_address(sg); 1092 ql_dbg(ql_dbg_io, vha, 0x300a, 1093 "sg entry %d - addr=0x%x 0x%x, " "len=%d for cmd=%p.\n", 1094 i, LSD(sle_dma), MSD(sle_dma), sg_dma_len(sg), 1095 sp->cmd); 1096 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 1097 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 1098 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 1099 avail_dsds--; 1100 1101 if (scsi_get_prot_op(sp->cmd) == SCSI_PROT_WRITE_PASS) { 1102 cp = page_address(sg_page(sg)) + sg->offset; 1103 ql_dbg(ql_dbg_io, vha, 0x300b, 1104 "User data buffer=%p for cmd=%p.\n", cp, sp->cmd); 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 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1129 uint8_t *cp; 1130 1131 1132 cmd = sp->cmd; 1133 scsi_for_each_prot_sg(cmd, sg, tot_dsds, i) { 1134 dma_addr_t sle_dma; 1135 1136 /* Allocate additional continuation packets? */ 1137 if (avail_dsds == 0) { 1138 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ? 1139 QLA_DSDS_PER_IOCB : used_dsds; 1140 dsd_list_len = (avail_dsds + 1) * 12; 1141 used_dsds -= avail_dsds; 1142 1143 /* allocate tracking DS */ 1144 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC); 1145 if (!dsd_ptr) 1146 return 1; 1147 1148 /* allocate new list */ 1149 dsd_ptr->dsd_addr = next_dsd = 1150 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, 1151 &dsd_ptr->dsd_list_dma); 1152 1153 if (!next_dsd) { 1154 /* 1155 * Need to cleanup only this dsd_ptr, rest 1156 * will be done by sp_free_dma() 1157 */ 1158 kfree(dsd_ptr); 1159 return 1; 1160 } 1161 1162 list_add_tail(&dsd_ptr->list, 1163 &((struct crc_context *)sp->ctx)->dsd_list); 1164 1165 sp->flags |= SRB_CRC_CTX_DSD_VALID; 1166 1167 /* add new list to cmd iocb or last list */ 1168 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 1169 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 1170 *cur_dsd++ = dsd_list_len; 1171 cur_dsd = (uint32_t *)next_dsd; 1172 } 1173 sle_dma = sg_dma_address(sg); 1174 if (scsi_get_prot_op(sp->cmd) == SCSI_PROT_WRITE_PASS) { 1175 ql_dbg(ql_dbg_io, vha, 0x3027, 1176 "%s(): %p, sg_entry %d - " 1177 "addr=0x%x0x%x, len=%d.\n", 1178 __func__, cur_dsd, i, 1179 LSD(sle_dma), MSD(sle_dma), sg_dma_len(sg)); 1180 } 1181 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 1182 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 1183 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 1184 1185 if (scsi_get_prot_op(sp->cmd) == SCSI_PROT_WRITE_PASS) { 1186 cp = page_address(sg_page(sg)) + sg->offset; 1187 ql_dbg(ql_dbg_io, vha, 0x3028, 1188 "%s(): Protection Data buffer = %p.\n", __func__, 1189 cp); 1190 } 1191 avail_dsds--; 1192 } 1193 /* Null termination */ 1194 *cur_dsd++ = 0; 1195 *cur_dsd++ = 0; 1196 *cur_dsd++ = 0; 1197 return 0; 1198 } 1199 1200 /** 1201 * qla24xx_build_scsi_crc_2_iocbs() - Build IOCB command utilizing Command 1202 * Type 6 IOCB types. 1203 * 1204 * @sp: SRB command to process 1205 * @cmd_pkt: Command type 3 IOCB 1206 * @tot_dsds: Total number of segments to transfer 1207 */ 1208 static inline int 1209 qla24xx_build_scsi_crc_2_iocbs(srb_t *sp, struct cmd_type_crc_2 *cmd_pkt, 1210 uint16_t tot_dsds, uint16_t tot_prot_dsds, uint16_t fw_prot_opts) 1211 { 1212 uint32_t *cur_dsd, *fcp_dl; 1213 scsi_qla_host_t *vha; 1214 struct scsi_cmnd *cmd; 1215 struct scatterlist *cur_seg; 1216 int sgc; 1217 uint32_t total_bytes = 0; 1218 uint32_t data_bytes; 1219 uint32_t dif_bytes; 1220 uint8_t bundling = 1; 1221 uint16_t blk_size; 1222 uint8_t *clr_ptr; 1223 struct crc_context *crc_ctx_pkt = NULL; 1224 struct qla_hw_data *ha; 1225 uint8_t additional_fcpcdb_len; 1226 uint16_t fcp_cmnd_len; 1227 struct fcp_cmnd *fcp_cmnd; 1228 dma_addr_t crc_ctx_dma; 1229 char tag[2]; 1230 1231 cmd = sp->cmd; 1232 1233 sgc = 0; 1234 /* Update entry type to indicate Command Type CRC_2 IOCB */ 1235 *((uint32_t *)(&cmd_pkt->entry_type)) = 1236 __constant_cpu_to_le32(COMMAND_TYPE_CRC_2); 1237 1238 vha = sp->fcport->vha; 1239 ha = vha->hw; 1240 1241 /* No data transfer */ 1242 data_bytes = scsi_bufflen(cmd); 1243 if (!data_bytes || cmd->sc_data_direction == DMA_NONE) { 1244 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 1245 return QLA_SUCCESS; 1246 } 1247 1248 cmd_pkt->vp_index = sp->fcport->vp_idx; 1249 1250 /* Set transfer direction */ 1251 if (cmd->sc_data_direction == DMA_TO_DEVICE) { 1252 cmd_pkt->control_flags = 1253 __constant_cpu_to_le16(CF_WRITE_DATA); 1254 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) { 1255 cmd_pkt->control_flags = 1256 __constant_cpu_to_le16(CF_READ_DATA); 1257 } 1258 1259 if ((scsi_get_prot_op(sp->cmd) == SCSI_PROT_READ_INSERT) || 1260 (scsi_get_prot_op(sp->cmd) == SCSI_PROT_WRITE_STRIP) || 1261 (scsi_get_prot_op(sp->cmd) == SCSI_PROT_READ_STRIP) || 1262 (scsi_get_prot_op(sp->cmd) == SCSI_PROT_WRITE_INSERT)) 1263 bundling = 0; 1264 1265 /* Allocate CRC context from global pool */ 1266 crc_ctx_pkt = sp->ctx = dma_pool_alloc(ha->dl_dma_pool, 1267 GFP_ATOMIC, &crc_ctx_dma); 1268 1269 if (!crc_ctx_pkt) 1270 goto crc_queuing_error; 1271 1272 /* Zero out CTX area. */ 1273 clr_ptr = (uint8_t *)crc_ctx_pkt; 1274 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt)); 1275 1276 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 1277 1278 sp->flags |= SRB_CRC_CTX_DMA_VALID; 1279 1280 /* Set handle */ 1281 crc_ctx_pkt->handle = cmd_pkt->handle; 1282 1283 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 1284 1285 qla24xx_set_t10dif_tags(sp, (struct fw_dif_context *) 1286 &crc_ctx_pkt->ref_tag, tot_prot_dsds); 1287 1288 cmd_pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma)); 1289 cmd_pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma)); 1290 cmd_pkt->crc_context_len = CRC_CONTEXT_LEN_FW; 1291 1292 /* Determine SCSI command length -- align to 4 byte boundary */ 1293 if (cmd->cmd_len > 16) { 1294 additional_fcpcdb_len = cmd->cmd_len - 16; 1295 if ((cmd->cmd_len % 4) != 0) { 1296 /* SCSI cmd > 16 bytes must be multiple of 4 */ 1297 goto crc_queuing_error; 1298 } 1299 fcp_cmnd_len = 12 + cmd->cmd_len + 4; 1300 } else { 1301 additional_fcpcdb_len = 0; 1302 fcp_cmnd_len = 12 + 16 + 4; 1303 } 1304 1305 fcp_cmnd = &crc_ctx_pkt->fcp_cmnd; 1306 1307 fcp_cmnd->additional_cdb_len = additional_fcpcdb_len; 1308 if (cmd->sc_data_direction == DMA_TO_DEVICE) 1309 fcp_cmnd->additional_cdb_len |= 1; 1310 else if (cmd->sc_data_direction == DMA_FROM_DEVICE) 1311 fcp_cmnd->additional_cdb_len |= 2; 1312 1313 int_to_scsilun(sp->cmd->device->lun, &fcp_cmnd->lun); 1314 memcpy(fcp_cmnd->cdb, cmd->cmnd, cmd->cmd_len); 1315 cmd_pkt->fcp_cmnd_dseg_len = cpu_to_le16(fcp_cmnd_len); 1316 cmd_pkt->fcp_cmnd_dseg_address[0] = cpu_to_le32( 1317 LSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF)); 1318 cmd_pkt->fcp_cmnd_dseg_address[1] = cpu_to_le32( 1319 MSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF)); 1320 fcp_cmnd->task_management = 0; 1321 1322 /* 1323 * Update tagged queuing modifier if using command tag queuing 1324 */ 1325 if (scsi_populate_tag_msg(cmd, tag)) { 1326 switch (tag[0]) { 1327 case HEAD_OF_QUEUE_TAG: 1328 fcp_cmnd->task_attribute = TSK_HEAD_OF_QUEUE; 1329 break; 1330 case ORDERED_QUEUE_TAG: 1331 fcp_cmnd->task_attribute = TSK_ORDERED; 1332 break; 1333 default: 1334 fcp_cmnd->task_attribute = 0; 1335 break; 1336 } 1337 } else { 1338 fcp_cmnd->task_attribute = 0; 1339 } 1340 1341 cmd_pkt->fcp_rsp_dseg_len = 0; /* Let response come in status iocb */ 1342 1343 /* Compute dif len and adjust data len to incude protection */ 1344 dif_bytes = 0; 1345 blk_size = cmd->device->sector_size; 1346 dif_bytes = (data_bytes / blk_size) * 8; 1347 1348 switch (scsi_get_prot_op(sp->cmd)) { 1349 case SCSI_PROT_READ_INSERT: 1350 case SCSI_PROT_WRITE_STRIP: 1351 total_bytes = data_bytes; 1352 data_bytes += dif_bytes; 1353 break; 1354 1355 case SCSI_PROT_READ_STRIP: 1356 case SCSI_PROT_WRITE_INSERT: 1357 case SCSI_PROT_READ_PASS: 1358 case SCSI_PROT_WRITE_PASS: 1359 total_bytes = data_bytes + dif_bytes; 1360 break; 1361 default: 1362 BUG(); 1363 } 1364 1365 if (!qla2x00_hba_err_chk_enabled(sp)) 1366 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 1367 1368 if (!bundling) { 1369 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address; 1370 } else { 1371 /* 1372 * Configure Bundling if we need to fetch interlaving 1373 * protection PCI accesses 1374 */ 1375 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 1376 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 1377 crc_ctx_pkt->u.bundling.dseg_count = cpu_to_le16(tot_dsds - 1378 tot_prot_dsds); 1379 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address; 1380 } 1381 1382 /* Finish the common fields of CRC pkt */ 1383 crc_ctx_pkt->blk_size = cpu_to_le16(blk_size); 1384 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 1385 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 1386 crc_ctx_pkt->guard_seed = __constant_cpu_to_le16(0); 1387 /* Fibre channel byte count */ 1388 cmd_pkt->byte_count = cpu_to_le32(total_bytes); 1389 fcp_dl = (uint32_t *)(crc_ctx_pkt->fcp_cmnd.cdb + 16 + 1390 additional_fcpcdb_len); 1391 *fcp_dl = htonl(total_bytes); 1392 1393 if (!data_bytes || cmd->sc_data_direction == DMA_NONE) { 1394 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 1395 return QLA_SUCCESS; 1396 } 1397 /* Walks data segments */ 1398 1399 cmd_pkt->control_flags |= 1400 __constant_cpu_to_le16(CF_DATA_SEG_DESCR_ENABLE); 1401 1402 if (!bundling && tot_prot_dsds) { 1403 if (qla24xx_walk_and_build_sglist_no_difb(ha, sp, 1404 cur_dsd, tot_dsds)) 1405 goto crc_queuing_error; 1406 } else if (qla24xx_walk_and_build_sglist(ha, sp, cur_dsd, 1407 (tot_dsds - tot_prot_dsds))) 1408 goto crc_queuing_error; 1409 1410 if (bundling && tot_prot_dsds) { 1411 /* Walks dif segments */ 1412 cur_seg = scsi_prot_sglist(cmd); 1413 cmd_pkt->control_flags |= 1414 __constant_cpu_to_le16(CF_DIF_SEG_DESCR_ENABLE); 1415 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address; 1416 if (qla24xx_walk_and_build_prot_sglist(ha, sp, cur_dsd, 1417 tot_prot_dsds)) 1418 goto crc_queuing_error; 1419 } 1420 return QLA_SUCCESS; 1421 1422 crc_queuing_error: 1423 /* Cleanup will be performed by the caller */ 1424 1425 return QLA_FUNCTION_FAILED; 1426 } 1427 1428 /** 1429 * qla24xx_start_scsi() - Send a SCSI command to the ISP 1430 * @sp: command to send to the ISP 1431 * 1432 * Returns non-zero if a failure occurred, else zero. 1433 */ 1434 int 1435 qla24xx_start_scsi(srb_t *sp) 1436 { 1437 int ret, nseg; 1438 unsigned long flags; 1439 uint32_t *clr_ptr; 1440 uint32_t index; 1441 uint32_t handle; 1442 struct cmd_type_7 *cmd_pkt; 1443 uint16_t cnt; 1444 uint16_t req_cnt; 1445 uint16_t tot_dsds; 1446 struct req_que *req = NULL; 1447 struct rsp_que *rsp = NULL; 1448 struct scsi_cmnd *cmd = sp->cmd; 1449 struct scsi_qla_host *vha = sp->fcport->vha; 1450 struct qla_hw_data *ha = vha->hw; 1451 char tag[2]; 1452 1453 /* Setup device pointers. */ 1454 ret = 0; 1455 1456 qla25xx_set_que(sp, &rsp); 1457 req = vha->req; 1458 1459 /* So we know we haven't pci_map'ed anything yet */ 1460 tot_dsds = 0; 1461 1462 /* Send marker if required */ 1463 if (vha->marker_needed != 0) { 1464 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) != 1465 QLA_SUCCESS) 1466 return QLA_FUNCTION_FAILED; 1467 vha->marker_needed = 0; 1468 } 1469 1470 /* Acquire ring specific lock */ 1471 spin_lock_irqsave(&ha->hardware_lock, flags); 1472 1473 /* Check for room in outstanding command list. */ 1474 handle = req->current_outstanding_cmd; 1475 for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) { 1476 handle++; 1477 if (handle == MAX_OUTSTANDING_COMMANDS) 1478 handle = 1; 1479 if (!req->outstanding_cmds[handle]) 1480 break; 1481 } 1482 if (index == MAX_OUTSTANDING_COMMANDS) { 1483 goto queuing_error; 1484 } 1485 1486 /* Map the sg table so we have an accurate count of sg entries needed */ 1487 if (scsi_sg_count(cmd)) { 1488 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd), 1489 scsi_sg_count(cmd), cmd->sc_data_direction); 1490 if (unlikely(!nseg)) 1491 goto queuing_error; 1492 } else 1493 nseg = 0; 1494 1495 tot_dsds = nseg; 1496 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds); 1497 if (req->cnt < (req_cnt + 2)) { 1498 cnt = RD_REG_DWORD_RELAXED(req->req_q_out); 1499 1500 if (req->ring_index < cnt) 1501 req->cnt = cnt - req->ring_index; 1502 else 1503 req->cnt = req->length - 1504 (req->ring_index - cnt); 1505 } 1506 if (req->cnt < (req_cnt + 2)) 1507 goto queuing_error; 1508 1509 /* Build command packet. */ 1510 req->current_outstanding_cmd = handle; 1511 req->outstanding_cmds[handle] = sp; 1512 sp->handle = handle; 1513 sp->cmd->host_scribble = (unsigned char *)(unsigned long)handle; 1514 req->cnt -= req_cnt; 1515 1516 cmd_pkt = (struct cmd_type_7 *)req->ring_ptr; 1517 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 1518 1519 /* Zero out remaining portion of packet. */ 1520 /* tagged queuing modifier -- default is TSK_SIMPLE (0). */ 1521 clr_ptr = (uint32_t *)cmd_pkt + 2; 1522 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 1523 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 1524 1525 /* Set NPORT-ID and LUN number*/ 1526 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1527 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; 1528 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; 1529 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; 1530 cmd_pkt->vp_index = sp->fcport->vp_idx; 1531 1532 int_to_scsilun(sp->cmd->device->lun, &cmd_pkt->lun); 1533 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun)); 1534 1535 /* Update tagged queuing modifier -- default is TSK_SIMPLE (0). */ 1536 if (scsi_populate_tag_msg(cmd, tag)) { 1537 switch (tag[0]) { 1538 case HEAD_OF_QUEUE_TAG: 1539 cmd_pkt->task = TSK_HEAD_OF_QUEUE; 1540 break; 1541 case ORDERED_QUEUE_TAG: 1542 cmd_pkt->task = TSK_ORDERED; 1543 break; 1544 } 1545 } 1546 1547 /* Load SCSI command packet. */ 1548 memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len); 1549 host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb)); 1550 1551 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); 1552 1553 /* Build IOCB segments */ 1554 qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds); 1555 1556 /* Set total data segment count. */ 1557 cmd_pkt->entry_count = (uint8_t)req_cnt; 1558 /* Specify response queue number where completion should happen */ 1559 cmd_pkt->entry_status = (uint8_t) rsp->id; 1560 wmb(); 1561 /* Adjust ring index. */ 1562 req->ring_index++; 1563 if (req->ring_index == req->length) { 1564 req->ring_index = 0; 1565 req->ring_ptr = req->ring; 1566 } else 1567 req->ring_ptr++; 1568 1569 sp->flags |= SRB_DMA_VALID; 1570 1571 /* Set chip new ring index. */ 1572 WRT_REG_DWORD(req->req_q_in, req->ring_index); 1573 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr); 1574 1575 /* Manage unprocessed RIO/ZIO commands in response queue. */ 1576 if (vha->flags.process_response_queue && 1577 rsp->ring_ptr->signature != RESPONSE_PROCESSED) 1578 qla24xx_process_response_queue(vha, rsp); 1579 1580 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1581 return QLA_SUCCESS; 1582 1583 queuing_error: 1584 if (tot_dsds) 1585 scsi_dma_unmap(cmd); 1586 1587 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1588 1589 return QLA_FUNCTION_FAILED; 1590 } 1591 1592 1593 /** 1594 * qla24xx_dif_start_scsi() - Send a SCSI command to the ISP 1595 * @sp: command to send to the ISP 1596 * 1597 * Returns non-zero if a failure occurred, else zero. 1598 */ 1599 int 1600 qla24xx_dif_start_scsi(srb_t *sp) 1601 { 1602 int nseg; 1603 unsigned long flags; 1604 uint32_t *clr_ptr; 1605 uint32_t index; 1606 uint32_t handle; 1607 uint16_t cnt; 1608 uint16_t req_cnt = 0; 1609 uint16_t tot_dsds; 1610 uint16_t tot_prot_dsds; 1611 uint16_t fw_prot_opts = 0; 1612 struct req_que *req = NULL; 1613 struct rsp_que *rsp = NULL; 1614 struct scsi_cmnd *cmd = sp->cmd; 1615 struct scsi_qla_host *vha = sp->fcport->vha; 1616 struct qla_hw_data *ha = vha->hw; 1617 struct cmd_type_crc_2 *cmd_pkt; 1618 uint32_t status = 0; 1619 1620 #define QDSS_GOT_Q_SPACE BIT_0 1621 1622 /* Only process protection or >16 cdb in this routine */ 1623 if (scsi_get_prot_op(cmd) == SCSI_PROT_NORMAL) { 1624 if (cmd->cmd_len <= 16) 1625 return qla24xx_start_scsi(sp); 1626 } 1627 1628 /* Setup device pointers. */ 1629 1630 qla25xx_set_que(sp, &rsp); 1631 req = vha->req; 1632 1633 /* So we know we haven't pci_map'ed anything yet */ 1634 tot_dsds = 0; 1635 1636 /* Send marker if required */ 1637 if (vha->marker_needed != 0) { 1638 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) != 1639 QLA_SUCCESS) 1640 return QLA_FUNCTION_FAILED; 1641 vha->marker_needed = 0; 1642 } 1643 1644 /* Acquire ring specific lock */ 1645 spin_lock_irqsave(&ha->hardware_lock, flags); 1646 1647 /* Check for room in outstanding command list. */ 1648 handle = req->current_outstanding_cmd; 1649 for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) { 1650 handle++; 1651 if (handle == MAX_OUTSTANDING_COMMANDS) 1652 handle = 1; 1653 if (!req->outstanding_cmds[handle]) 1654 break; 1655 } 1656 1657 if (index == MAX_OUTSTANDING_COMMANDS) 1658 goto queuing_error; 1659 1660 /* Compute number of required data segments */ 1661 /* Map the sg table so we have an accurate count of sg entries needed */ 1662 if (scsi_sg_count(cmd)) { 1663 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd), 1664 scsi_sg_count(cmd), cmd->sc_data_direction); 1665 if (unlikely(!nseg)) 1666 goto queuing_error; 1667 else 1668 sp->flags |= SRB_DMA_VALID; 1669 1670 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) || 1671 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) { 1672 struct qla2_sgx sgx; 1673 uint32_t partial; 1674 1675 memset(&sgx, 0, sizeof(struct qla2_sgx)); 1676 sgx.tot_bytes = scsi_bufflen(cmd); 1677 sgx.cur_sg = scsi_sglist(cmd); 1678 sgx.sp = sp; 1679 1680 nseg = 0; 1681 while (qla24xx_get_one_block_sg( 1682 cmd->device->sector_size, &sgx, &partial)) 1683 nseg++; 1684 } 1685 } else 1686 nseg = 0; 1687 1688 /* number of required data segments */ 1689 tot_dsds = nseg; 1690 1691 /* Compute number of required protection segments */ 1692 if (qla24xx_configure_prot_mode(sp, &fw_prot_opts)) { 1693 nseg = dma_map_sg(&ha->pdev->dev, scsi_prot_sglist(cmd), 1694 scsi_prot_sg_count(cmd), cmd->sc_data_direction); 1695 if (unlikely(!nseg)) 1696 goto queuing_error; 1697 else 1698 sp->flags |= SRB_CRC_PROT_DMA_VALID; 1699 1700 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) || 1701 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) { 1702 nseg = scsi_bufflen(cmd) / cmd->device->sector_size; 1703 } 1704 } else { 1705 nseg = 0; 1706 } 1707 1708 req_cnt = 1; 1709 /* Total Data and protection sg segment(s) */ 1710 tot_prot_dsds = nseg; 1711 tot_dsds += nseg; 1712 if (req->cnt < (req_cnt + 2)) { 1713 cnt = RD_REG_DWORD_RELAXED(req->req_q_out); 1714 1715 if (req->ring_index < cnt) 1716 req->cnt = cnt - req->ring_index; 1717 else 1718 req->cnt = req->length - 1719 (req->ring_index - cnt); 1720 } 1721 1722 if (req->cnt < (req_cnt + 2)) 1723 goto queuing_error; 1724 1725 status |= QDSS_GOT_Q_SPACE; 1726 1727 /* Build header part of command packet (excluding the OPCODE). */ 1728 req->current_outstanding_cmd = handle; 1729 req->outstanding_cmds[handle] = sp; 1730 sp->handle = handle; 1731 sp->cmd->host_scribble = (unsigned char *)(unsigned long)handle; 1732 req->cnt -= req_cnt; 1733 1734 /* Fill-in common area */ 1735 cmd_pkt = (struct cmd_type_crc_2 *)req->ring_ptr; 1736 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 1737 1738 clr_ptr = (uint32_t *)cmd_pkt + 2; 1739 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 1740 1741 /* Set NPORT-ID and LUN number*/ 1742 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1743 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; 1744 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; 1745 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; 1746 1747 int_to_scsilun(sp->cmd->device->lun, &cmd_pkt->lun); 1748 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun)); 1749 1750 /* Total Data and protection segment(s) */ 1751 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 1752 1753 /* Build IOCB segments and adjust for data protection segments */ 1754 if (qla24xx_build_scsi_crc_2_iocbs(sp, (struct cmd_type_crc_2 *) 1755 req->ring_ptr, tot_dsds, tot_prot_dsds, fw_prot_opts) != 1756 QLA_SUCCESS) 1757 goto queuing_error; 1758 1759 cmd_pkt->entry_count = (uint8_t)req_cnt; 1760 /* Specify response queue number where completion should happen */ 1761 cmd_pkt->entry_status = (uint8_t) rsp->id; 1762 cmd_pkt->timeout = __constant_cpu_to_le16(0); 1763 wmb(); 1764 1765 /* Adjust ring index. */ 1766 req->ring_index++; 1767 if (req->ring_index == req->length) { 1768 req->ring_index = 0; 1769 req->ring_ptr = req->ring; 1770 } else 1771 req->ring_ptr++; 1772 1773 /* Set chip new ring index. */ 1774 WRT_REG_DWORD(req->req_q_in, req->ring_index); 1775 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr); 1776 1777 /* Manage unprocessed RIO/ZIO commands in response queue. */ 1778 if (vha->flags.process_response_queue && 1779 rsp->ring_ptr->signature != RESPONSE_PROCESSED) 1780 qla24xx_process_response_queue(vha, rsp); 1781 1782 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1783 1784 return QLA_SUCCESS; 1785 1786 queuing_error: 1787 if (status & QDSS_GOT_Q_SPACE) { 1788 req->outstanding_cmds[handle] = NULL; 1789 req->cnt += req_cnt; 1790 } 1791 /* Cleanup will be performed by the caller (queuecommand) */ 1792 1793 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1794 return QLA_FUNCTION_FAILED; 1795 } 1796 1797 1798 static void qla25xx_set_que(srb_t *sp, struct rsp_que **rsp) 1799 { 1800 struct scsi_cmnd *cmd = sp->cmd; 1801 struct qla_hw_data *ha = sp->fcport->vha->hw; 1802 int affinity = cmd->request->cpu; 1803 1804 if (ha->flags.cpu_affinity_enabled && affinity >= 0 && 1805 affinity < ha->max_rsp_queues - 1) 1806 *rsp = ha->rsp_q_map[affinity + 1]; 1807 else 1808 *rsp = ha->rsp_q_map[0]; 1809 } 1810 1811 /* Generic Control-SRB manipulation functions. */ 1812 void * 1813 qla2x00_alloc_iocbs(scsi_qla_host_t *vha, srb_t *sp) 1814 { 1815 struct qla_hw_data *ha = vha->hw; 1816 struct req_que *req = ha->req_q_map[0]; 1817 device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id); 1818 uint32_t index, handle; 1819 request_t *pkt; 1820 uint16_t cnt, req_cnt; 1821 struct srb_ctx *ctx; 1822 1823 pkt = NULL; 1824 req_cnt = 1; 1825 handle = 0; 1826 1827 if (!sp) 1828 goto skip_cmd_array; 1829 1830 /* Check for room in outstanding command list. */ 1831 handle = req->current_outstanding_cmd; 1832 for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) { 1833 handle++; 1834 if (handle == MAX_OUTSTANDING_COMMANDS) 1835 handle = 1; 1836 if (!req->outstanding_cmds[handle]) 1837 break; 1838 } 1839 if (index == MAX_OUTSTANDING_COMMANDS) { 1840 ql_log(ql_log_warn, vha, 0x700b, 1841 "No room on oustanding cmd array.\n"); 1842 goto queuing_error; 1843 } 1844 1845 /* Prep command array. */ 1846 req->current_outstanding_cmd = handle; 1847 req->outstanding_cmds[handle] = sp; 1848 sp->handle = handle; 1849 1850 /* Adjust entry-counts as needed. */ 1851 if (sp->ctx) { 1852 ctx = sp->ctx; 1853 req_cnt = ctx->iocbs; 1854 } 1855 1856 skip_cmd_array: 1857 /* Check for room on request queue. */ 1858 if (req->cnt < req_cnt) { 1859 if (ha->mqenable) 1860 cnt = RD_REG_DWORD(®->isp25mq.req_q_out); 1861 else if (IS_QLA82XX(ha)) 1862 cnt = RD_REG_DWORD(®->isp82.req_q_out); 1863 else if (IS_FWI2_CAPABLE(ha)) 1864 cnt = RD_REG_DWORD(®->isp24.req_q_out); 1865 else 1866 cnt = qla2x00_debounce_register( 1867 ISP_REQ_Q_OUT(ha, ®->isp)); 1868 1869 if (req->ring_index < cnt) 1870 req->cnt = cnt - req->ring_index; 1871 else 1872 req->cnt = req->length - 1873 (req->ring_index - cnt); 1874 } 1875 if (req->cnt < req_cnt) 1876 goto queuing_error; 1877 1878 /* Prep packet */ 1879 req->cnt -= req_cnt; 1880 pkt = req->ring_ptr; 1881 memset(pkt, 0, REQUEST_ENTRY_SIZE); 1882 pkt->entry_count = req_cnt; 1883 pkt->handle = handle; 1884 1885 queuing_error: 1886 return pkt; 1887 } 1888 1889 static void 1890 qla24xx_login_iocb(srb_t *sp, struct logio_entry_24xx *logio) 1891 { 1892 struct srb_ctx *ctx = sp->ctx; 1893 struct srb_iocb *lio = ctx->u.iocb_cmd; 1894 1895 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; 1896 logio->control_flags = cpu_to_le16(LCF_COMMAND_PLOGI); 1897 if (lio->u.logio.flags & SRB_LOGIN_COND_PLOGI) 1898 logio->control_flags |= cpu_to_le16(LCF_COND_PLOGI); 1899 if (lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI) 1900 logio->control_flags |= cpu_to_le16(LCF_SKIP_PRLI); 1901 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1902 logio->port_id[0] = sp->fcport->d_id.b.al_pa; 1903 logio->port_id[1] = sp->fcport->d_id.b.area; 1904 logio->port_id[2] = sp->fcport->d_id.b.domain; 1905 logio->vp_index = sp->fcport->vp_idx; 1906 } 1907 1908 static void 1909 qla2x00_login_iocb(srb_t *sp, struct mbx_entry *mbx) 1910 { 1911 struct qla_hw_data *ha = sp->fcport->vha->hw; 1912 struct srb_ctx *ctx = sp->ctx; 1913 struct srb_iocb *lio = ctx->u.iocb_cmd; 1914 uint16_t opts; 1915 1916 mbx->entry_type = MBX_IOCB_TYPE; 1917 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id); 1918 mbx->mb0 = cpu_to_le16(MBC_LOGIN_FABRIC_PORT); 1919 opts = lio->u.logio.flags & SRB_LOGIN_COND_PLOGI ? BIT_0 : 0; 1920 opts |= lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI ? BIT_1 : 0; 1921 if (HAS_EXTENDED_IDS(ha)) { 1922 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id); 1923 mbx->mb10 = cpu_to_le16(opts); 1924 } else { 1925 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | opts); 1926 } 1927 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain); 1928 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 | 1929 sp->fcport->d_id.b.al_pa); 1930 mbx->mb9 = cpu_to_le16(sp->fcport->vp_idx); 1931 } 1932 1933 static void 1934 qla24xx_logout_iocb(srb_t *sp, struct logio_entry_24xx *logio) 1935 { 1936 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; 1937 logio->control_flags = 1938 cpu_to_le16(LCF_COMMAND_LOGO|LCF_IMPL_LOGO); 1939 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1940 logio->port_id[0] = sp->fcport->d_id.b.al_pa; 1941 logio->port_id[1] = sp->fcport->d_id.b.area; 1942 logio->port_id[2] = sp->fcport->d_id.b.domain; 1943 logio->vp_index = sp->fcport->vp_idx; 1944 } 1945 1946 static void 1947 qla2x00_logout_iocb(srb_t *sp, struct mbx_entry *mbx) 1948 { 1949 struct qla_hw_data *ha = sp->fcport->vha->hw; 1950 1951 mbx->entry_type = MBX_IOCB_TYPE; 1952 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id); 1953 mbx->mb0 = cpu_to_le16(MBC_LOGOUT_FABRIC_PORT); 1954 mbx->mb1 = HAS_EXTENDED_IDS(ha) ? 1955 cpu_to_le16(sp->fcport->loop_id): 1956 cpu_to_le16(sp->fcport->loop_id << 8); 1957 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain); 1958 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 | 1959 sp->fcport->d_id.b.al_pa); 1960 mbx->mb9 = cpu_to_le16(sp->fcport->vp_idx); 1961 /* Implicit: mbx->mbx10 = 0. */ 1962 } 1963 1964 static void 1965 qla24xx_adisc_iocb(srb_t *sp, struct logio_entry_24xx *logio) 1966 { 1967 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; 1968 logio->control_flags = cpu_to_le16(LCF_COMMAND_ADISC); 1969 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1970 logio->vp_index = sp->fcport->vp_idx; 1971 } 1972 1973 static void 1974 qla2x00_adisc_iocb(srb_t *sp, struct mbx_entry *mbx) 1975 { 1976 struct qla_hw_data *ha = sp->fcport->vha->hw; 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_GET_PORT_DATABASE); 1981 if (HAS_EXTENDED_IDS(ha)) { 1982 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id); 1983 mbx->mb10 = cpu_to_le16(BIT_0); 1984 } else { 1985 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | BIT_0); 1986 } 1987 mbx->mb2 = cpu_to_le16(MSW(ha->async_pd_dma)); 1988 mbx->mb3 = cpu_to_le16(LSW(ha->async_pd_dma)); 1989 mbx->mb6 = cpu_to_le16(MSW(MSD(ha->async_pd_dma))); 1990 mbx->mb7 = cpu_to_le16(LSW(MSD(ha->async_pd_dma))); 1991 mbx->mb9 = cpu_to_le16(sp->fcport->vp_idx); 1992 } 1993 1994 static void 1995 qla24xx_tm_iocb(srb_t *sp, struct tsk_mgmt_entry *tsk) 1996 { 1997 uint32_t flags; 1998 unsigned int lun; 1999 struct fc_port *fcport = sp->fcport; 2000 scsi_qla_host_t *vha = fcport->vha; 2001 struct qla_hw_data *ha = vha->hw; 2002 struct srb_ctx *ctx = sp->ctx; 2003 struct srb_iocb *iocb = ctx->u.iocb_cmd; 2004 struct req_que *req = vha->req; 2005 2006 flags = iocb->u.tmf.flags; 2007 lun = iocb->u.tmf.lun; 2008 2009 tsk->entry_type = TSK_MGMT_IOCB_TYPE; 2010 tsk->entry_count = 1; 2011 tsk->handle = MAKE_HANDLE(req->id, tsk->handle); 2012 tsk->nport_handle = cpu_to_le16(fcport->loop_id); 2013 tsk->timeout = cpu_to_le16(ha->r_a_tov / 10 * 2); 2014 tsk->control_flags = cpu_to_le32(flags); 2015 tsk->port_id[0] = fcport->d_id.b.al_pa; 2016 tsk->port_id[1] = fcport->d_id.b.area; 2017 tsk->port_id[2] = fcport->d_id.b.domain; 2018 tsk->vp_index = fcport->vp_idx; 2019 2020 if (flags == TCF_LUN_RESET) { 2021 int_to_scsilun(lun, &tsk->lun); 2022 host_to_fcp_swap((uint8_t *)&tsk->lun, 2023 sizeof(tsk->lun)); 2024 } 2025 } 2026 2027 static void 2028 qla24xx_els_iocb(srb_t *sp, struct els_entry_24xx *els_iocb) 2029 { 2030 struct fc_bsg_job *bsg_job = ((struct srb_ctx *)sp->ctx)->u.bsg_job; 2031 2032 els_iocb->entry_type = ELS_IOCB_TYPE; 2033 els_iocb->entry_count = 1; 2034 els_iocb->sys_define = 0; 2035 els_iocb->entry_status = 0; 2036 els_iocb->handle = sp->handle; 2037 els_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2038 els_iocb->tx_dsd_count = __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt); 2039 els_iocb->vp_index = sp->fcport->vp_idx; 2040 els_iocb->sof_type = EST_SOFI3; 2041 els_iocb->rx_dsd_count = __constant_cpu_to_le16(bsg_job->reply_payload.sg_cnt); 2042 2043 els_iocb->opcode = 2044 (((struct srb_ctx *)sp->ctx)->type == SRB_ELS_CMD_RPT) ? 2045 bsg_job->request->rqst_data.r_els.els_code : 2046 bsg_job->request->rqst_data.h_els.command_code; 2047 els_iocb->port_id[0] = sp->fcport->d_id.b.al_pa; 2048 els_iocb->port_id[1] = sp->fcport->d_id.b.area; 2049 els_iocb->port_id[2] = sp->fcport->d_id.b.domain; 2050 els_iocb->control_flags = 0; 2051 els_iocb->rx_byte_count = 2052 cpu_to_le32(bsg_job->reply_payload.payload_len); 2053 els_iocb->tx_byte_count = 2054 cpu_to_le32(bsg_job->request_payload.payload_len); 2055 2056 els_iocb->tx_address[0] = cpu_to_le32(LSD(sg_dma_address 2057 (bsg_job->request_payload.sg_list))); 2058 els_iocb->tx_address[1] = cpu_to_le32(MSD(sg_dma_address 2059 (bsg_job->request_payload.sg_list))); 2060 els_iocb->tx_len = cpu_to_le32(sg_dma_len 2061 (bsg_job->request_payload.sg_list)); 2062 2063 els_iocb->rx_address[0] = cpu_to_le32(LSD(sg_dma_address 2064 (bsg_job->reply_payload.sg_list))); 2065 els_iocb->rx_address[1] = cpu_to_le32(MSD(sg_dma_address 2066 (bsg_job->reply_payload.sg_list))); 2067 els_iocb->rx_len = cpu_to_le32(sg_dma_len 2068 (bsg_job->reply_payload.sg_list)); 2069 } 2070 2071 static void 2072 qla2x00_ct_iocb(srb_t *sp, ms_iocb_entry_t *ct_iocb) 2073 { 2074 uint16_t avail_dsds; 2075 uint32_t *cur_dsd; 2076 struct scatterlist *sg; 2077 int index; 2078 uint16_t tot_dsds; 2079 scsi_qla_host_t *vha = sp->fcport->vha; 2080 struct qla_hw_data *ha = vha->hw; 2081 struct fc_bsg_job *bsg_job = ((struct srb_ctx *)sp->ctx)->u.bsg_job; 2082 int loop_iterartion = 0; 2083 int cont_iocb_prsnt = 0; 2084 int entry_count = 1; 2085 2086 memset(ct_iocb, 0, sizeof(ms_iocb_entry_t)); 2087 ct_iocb->entry_type = CT_IOCB_TYPE; 2088 ct_iocb->entry_status = 0; 2089 ct_iocb->handle1 = sp->handle; 2090 SET_TARGET_ID(ha, ct_iocb->loop_id, sp->fcport->loop_id); 2091 ct_iocb->status = __constant_cpu_to_le16(0); 2092 ct_iocb->control_flags = __constant_cpu_to_le16(0); 2093 ct_iocb->timeout = 0; 2094 ct_iocb->cmd_dsd_count = 2095 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt); 2096 ct_iocb->total_dsd_count = 2097 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt + 1); 2098 ct_iocb->req_bytecount = 2099 cpu_to_le32(bsg_job->request_payload.payload_len); 2100 ct_iocb->rsp_bytecount = 2101 cpu_to_le32(bsg_job->reply_payload.payload_len); 2102 2103 ct_iocb->dseg_req_address[0] = cpu_to_le32(LSD(sg_dma_address 2104 (bsg_job->request_payload.sg_list))); 2105 ct_iocb->dseg_req_address[1] = cpu_to_le32(MSD(sg_dma_address 2106 (bsg_job->request_payload.sg_list))); 2107 ct_iocb->dseg_req_length = ct_iocb->req_bytecount; 2108 2109 ct_iocb->dseg_rsp_address[0] = cpu_to_le32(LSD(sg_dma_address 2110 (bsg_job->reply_payload.sg_list))); 2111 ct_iocb->dseg_rsp_address[1] = cpu_to_le32(MSD(sg_dma_address 2112 (bsg_job->reply_payload.sg_list))); 2113 ct_iocb->dseg_rsp_length = ct_iocb->rsp_bytecount; 2114 2115 avail_dsds = 1; 2116 cur_dsd = (uint32_t *)ct_iocb->dseg_rsp_address; 2117 index = 0; 2118 tot_dsds = bsg_job->reply_payload.sg_cnt; 2119 2120 for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) { 2121 dma_addr_t sle_dma; 2122 cont_a64_entry_t *cont_pkt; 2123 2124 /* Allocate additional continuation packets? */ 2125 if (avail_dsds == 0) { 2126 /* 2127 * Five DSDs are available in the Cont. 2128 * Type 1 IOCB. 2129 */ 2130 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, 2131 vha->hw->req_q_map[0]); 2132 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address; 2133 avail_dsds = 5; 2134 cont_iocb_prsnt = 1; 2135 entry_count++; 2136 } 2137 2138 sle_dma = sg_dma_address(sg); 2139 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 2140 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 2141 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 2142 loop_iterartion++; 2143 avail_dsds--; 2144 } 2145 ct_iocb->entry_count = entry_count; 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 = ((struct srb_ctx *)sp->ctx)->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->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 = sp->cmd; 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 < MAX_OUTSTANDING_COMMANDS; index++) { 2279 handle++; 2280 if (handle == MAX_OUTSTANDING_COMMANDS) 2281 handle = 1; 2282 if (!req->outstanding_cmds[handle]) 2283 break; 2284 } 2285 if (index == MAX_OUTSTANDING_COMMANDS) 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 } 2353 2354 if (req->cnt < (req_cnt + 2)) 2355 goto queuing_error; 2356 2357 ctx = sp->ctx = mempool_alloc(ha->ctx_mempool, GFP_ATOMIC); 2358 if (!sp->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 memset(ctx, 0, sizeof(struct ct6_dsd)); 2364 ctx->fcp_cmnd = dma_pool_alloc(ha->fcp_cmnd_dma_pool, 2365 GFP_ATOMIC, &ctx->fcp_cmnd_dma); 2366 if (!ctx->fcp_cmnd) { 2367 ql_log(ql_log_fatal, vha, 0x3011, 2368 "Failed to allocate fcp_cmnd for cmd=%p.\n", cmd); 2369 goto queuing_error_fcp_cmnd; 2370 } 2371 2372 /* Initialize the DSD list and dma handle */ 2373 INIT_LIST_HEAD(&ctx->dsd_list); 2374 ctx->dsd_use_cnt = 0; 2375 2376 if (cmd->cmd_len > 16) { 2377 additional_cdb_len = cmd->cmd_len - 16; 2378 if ((cmd->cmd_len % 4) != 0) { 2379 /* SCSI command bigger than 16 bytes must be 2380 * multiple of 4 2381 */ 2382 ql_log(ql_log_warn, vha, 0x3012, 2383 "scsi cmd len %d not multiple of 4 " 2384 "for cmd=%p.\n", cmd->cmd_len, cmd); 2385 goto queuing_error_fcp_cmnd; 2386 } 2387 ctx->fcp_cmnd_len = 12 + cmd->cmd_len + 4; 2388 } else { 2389 additional_cdb_len = 0; 2390 ctx->fcp_cmnd_len = 12 + 16 + 4; 2391 } 2392 2393 cmd_pkt = (struct cmd_type_6 *)req->ring_ptr; 2394 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 2395 2396 /* Zero out remaining portion of packet. */ 2397 /* tagged queuing modifier -- default is TSK_SIMPLE (0). */ 2398 clr_ptr = (uint32_t *)cmd_pkt + 2; 2399 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 2400 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 2401 2402 /* Set NPORT-ID and LUN number*/ 2403 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2404 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; 2405 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; 2406 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; 2407 cmd_pkt->vp_index = sp->fcport->vp_idx; 2408 2409 /* Build IOCB segments */ 2410 if (qla24xx_build_scsi_type_6_iocbs(sp, cmd_pkt, tot_dsds)) 2411 goto queuing_error_fcp_cmnd; 2412 2413 int_to_scsilun(sp->cmd->device->lun, &cmd_pkt->lun); 2414 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun)); 2415 2416 /* build FCP_CMND IU */ 2417 memset(ctx->fcp_cmnd, 0, sizeof(struct fcp_cmnd)); 2418 int_to_scsilun(sp->cmd->device->lun, &ctx->fcp_cmnd->lun); 2419 ctx->fcp_cmnd->additional_cdb_len = additional_cdb_len; 2420 2421 if (cmd->sc_data_direction == DMA_TO_DEVICE) 2422 ctx->fcp_cmnd->additional_cdb_len |= 1; 2423 else if (cmd->sc_data_direction == DMA_FROM_DEVICE) 2424 ctx->fcp_cmnd->additional_cdb_len |= 2; 2425 2426 /* 2427 * Update tagged queuing modifier -- default is TSK_SIMPLE (0). 2428 */ 2429 if (scsi_populate_tag_msg(cmd, tag)) { 2430 switch (tag[0]) { 2431 case HEAD_OF_QUEUE_TAG: 2432 ctx->fcp_cmnd->task_attribute = 2433 TSK_HEAD_OF_QUEUE; 2434 break; 2435 case ORDERED_QUEUE_TAG: 2436 ctx->fcp_cmnd->task_attribute = 2437 TSK_ORDERED; 2438 break; 2439 } 2440 } 2441 2442 /* Populate the FCP_PRIO. */ 2443 if (ha->flags.fcp_prio_enabled) 2444 ctx->fcp_cmnd->task_attribute |= 2445 sp->fcport->fcp_prio << 3; 2446 2447 memcpy(ctx->fcp_cmnd->cdb, cmd->cmnd, cmd->cmd_len); 2448 2449 fcp_dl = (uint32_t *)(ctx->fcp_cmnd->cdb + 16 + 2450 additional_cdb_len); 2451 *fcp_dl = htonl((uint32_t)scsi_bufflen(cmd)); 2452 2453 cmd_pkt->fcp_cmnd_dseg_len = cpu_to_le16(ctx->fcp_cmnd_len); 2454 cmd_pkt->fcp_cmnd_dseg_address[0] = 2455 cpu_to_le32(LSD(ctx->fcp_cmnd_dma)); 2456 cmd_pkt->fcp_cmnd_dseg_address[1] = 2457 cpu_to_le32(MSD(ctx->fcp_cmnd_dma)); 2458 2459 sp->flags |= SRB_FCP_CMND_DMA_VALID; 2460 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); 2461 /* Set total data segment count. */ 2462 cmd_pkt->entry_count = (uint8_t)req_cnt; 2463 /* Specify response queue number where 2464 * completion should happen 2465 */ 2466 cmd_pkt->entry_status = (uint8_t) rsp->id; 2467 } else { 2468 struct cmd_type_7 *cmd_pkt; 2469 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds); 2470 if (req->cnt < (req_cnt + 2)) { 2471 cnt = (uint16_t)RD_REG_DWORD_RELAXED( 2472 ®->req_q_out[0]); 2473 if (req->ring_index < cnt) 2474 req->cnt = cnt - req->ring_index; 2475 else 2476 req->cnt = req->length - 2477 (req->ring_index - cnt); 2478 } 2479 if (req->cnt < (req_cnt + 2)) 2480 goto queuing_error; 2481 2482 cmd_pkt = (struct cmd_type_7 *)req->ring_ptr; 2483 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 2484 2485 /* Zero out remaining portion of packet. */ 2486 /* tagged queuing modifier -- default is TSK_SIMPLE (0).*/ 2487 clr_ptr = (uint32_t *)cmd_pkt + 2; 2488 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 2489 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 2490 2491 /* Set NPORT-ID and LUN number*/ 2492 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2493 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; 2494 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; 2495 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; 2496 cmd_pkt->vp_index = sp->fcport->vp_idx; 2497 2498 int_to_scsilun(sp->cmd->device->lun, &cmd_pkt->lun); 2499 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, 2500 sizeof(cmd_pkt->lun)); 2501 2502 /* 2503 * Update tagged queuing modifier -- default is TSK_SIMPLE (0). 2504 */ 2505 if (scsi_populate_tag_msg(cmd, tag)) { 2506 switch (tag[0]) { 2507 case HEAD_OF_QUEUE_TAG: 2508 cmd_pkt->task = TSK_HEAD_OF_QUEUE; 2509 break; 2510 case ORDERED_QUEUE_TAG: 2511 cmd_pkt->task = TSK_ORDERED; 2512 break; 2513 } 2514 } 2515 2516 /* Populate the FCP_PRIO. */ 2517 if (ha->flags.fcp_prio_enabled) 2518 cmd_pkt->task |= sp->fcport->fcp_prio << 3; 2519 2520 /* Load SCSI command packet. */ 2521 memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len); 2522 host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb)); 2523 2524 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); 2525 2526 /* Build IOCB segments */ 2527 qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds); 2528 2529 /* Set total data segment count. */ 2530 cmd_pkt->entry_count = (uint8_t)req_cnt; 2531 /* Specify response queue number where 2532 * completion should happen. 2533 */ 2534 cmd_pkt->entry_status = (uint8_t) rsp->id; 2535 2536 } 2537 /* Build command packet. */ 2538 req->current_outstanding_cmd = handle; 2539 req->outstanding_cmds[handle] = sp; 2540 sp->handle = handle; 2541 sp->cmd->host_scribble = (unsigned char *)(unsigned long)handle; 2542 req->cnt -= req_cnt; 2543 wmb(); 2544 2545 /* Adjust ring index. */ 2546 req->ring_index++; 2547 if (req->ring_index == req->length) { 2548 req->ring_index = 0; 2549 req->ring_ptr = req->ring; 2550 } else 2551 req->ring_ptr++; 2552 2553 sp->flags |= SRB_DMA_VALID; 2554 2555 /* Set chip new ring index. */ 2556 /* write, read and verify logic */ 2557 dbval = dbval | (req->id << 8) | (req->ring_index << 16); 2558 if (ql2xdbwr) 2559 qla82xx_wr_32(ha, ha->nxdb_wr_ptr, dbval); 2560 else { 2561 WRT_REG_DWORD( 2562 (unsigned long __iomem *)ha->nxdb_wr_ptr, 2563 dbval); 2564 wmb(); 2565 while (RD_REG_DWORD(ha->nxdb_rd_ptr) != dbval) { 2566 WRT_REG_DWORD( 2567 (unsigned long __iomem *)ha->nxdb_wr_ptr, 2568 dbval); 2569 wmb(); 2570 } 2571 } 2572 2573 /* Manage unprocessed RIO/ZIO commands in response queue. */ 2574 if (vha->flags.process_response_queue && 2575 rsp->ring_ptr->signature != RESPONSE_PROCESSED) 2576 qla24xx_process_response_queue(vha, rsp); 2577 2578 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2579 return QLA_SUCCESS; 2580 2581 queuing_error_fcp_cmnd: 2582 dma_pool_free(ha->fcp_cmnd_dma_pool, ctx->fcp_cmnd, ctx->fcp_cmnd_dma); 2583 queuing_error: 2584 if (tot_dsds) 2585 scsi_dma_unmap(cmd); 2586 2587 if (sp->ctx) { 2588 mempool_free(sp->ctx, ha->ctx_mempool); 2589 sp->ctx = NULL; 2590 } 2591 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2592 2593 return QLA_FUNCTION_FAILED; 2594 } 2595 2596 int 2597 qla2x00_start_sp(srb_t *sp) 2598 { 2599 int rval; 2600 struct qla_hw_data *ha = sp->fcport->vha->hw; 2601 void *pkt; 2602 struct srb_ctx *ctx = sp->ctx; 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 (ctx->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 qla24xx_tm_iocb(sp, pkt); 2642 break; 2643 default: 2644 break; 2645 } 2646 2647 wmb(); 2648 qla2x00_start_iocbs(sp->fcport->vha, ha->req_q_map[0]); 2649 done: 2650 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2651 return rval; 2652 } 2653