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 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 26 27 cflags = 0; 28 29 /* Set transfer direction */ 30 if (cmd->sc_data_direction == DMA_TO_DEVICE) { 31 cflags = CF_WRITE; 32 sp->fcport->vha->hw->qla_stats.output_bytes += 33 scsi_bufflen(cmd); 34 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) { 35 cflags = CF_READ; 36 sp->fcport->vha->hw->qla_stats.input_bytes += 37 scsi_bufflen(cmd); 38 } 39 return (cflags); 40 } 41 42 /** 43 * qla2x00_calc_iocbs_32() - Determine number of Command Type 2 and 44 * Continuation Type 0 IOCBs to allocate. 45 * 46 * @dsds: number of data segment decriptors needed 47 * 48 * Returns the number of IOCB entries needed to store @dsds. 49 */ 50 uint16_t 51 qla2x00_calc_iocbs_32(uint16_t dsds) 52 { 53 uint16_t iocbs; 54 55 iocbs = 1; 56 if (dsds > 3) { 57 iocbs += (dsds - 3) / 7; 58 if ((dsds - 3) % 7) 59 iocbs++; 60 } 61 return (iocbs); 62 } 63 64 /** 65 * qla2x00_calc_iocbs_64() - Determine number of Command Type 3 and 66 * Continuation Type 1 IOCBs to allocate. 67 * 68 * @dsds: number of data segment decriptors needed 69 * 70 * Returns the number of IOCB entries needed to store @dsds. 71 */ 72 uint16_t 73 qla2x00_calc_iocbs_64(uint16_t dsds) 74 { 75 uint16_t iocbs; 76 77 iocbs = 1; 78 if (dsds > 2) { 79 iocbs += (dsds - 2) / 5; 80 if ((dsds - 2) % 5) 81 iocbs++; 82 } 83 return (iocbs); 84 } 85 86 /** 87 * qla2x00_prep_cont_type0_iocb() - Initialize a Continuation Type 0 IOCB. 88 * @ha: HA context 89 * 90 * Returns a pointer to the Continuation Type 0 IOCB packet. 91 */ 92 static inline cont_entry_t * 93 qla2x00_prep_cont_type0_iocb(struct scsi_qla_host *vha) 94 { 95 cont_entry_t *cont_pkt; 96 struct req_que *req = vha->req; 97 /* Adjust ring index. */ 98 req->ring_index++; 99 if (req->ring_index == req->length) { 100 req->ring_index = 0; 101 req->ring_ptr = req->ring; 102 } else { 103 req->ring_ptr++; 104 } 105 106 cont_pkt = (cont_entry_t *)req->ring_ptr; 107 108 /* Load packet defaults. */ 109 *((uint32_t *)(&cont_pkt->entry_type)) = 110 __constant_cpu_to_le32(CONTINUE_TYPE); 111 112 return (cont_pkt); 113 } 114 115 /** 116 * qla2x00_prep_cont_type1_iocb() - Initialize a Continuation Type 1 IOCB. 117 * @ha: HA context 118 * 119 * Returns a pointer to the continuation type 1 IOCB packet. 120 */ 121 static inline cont_a64_entry_t * 122 qla2x00_prep_cont_type1_iocb(scsi_qla_host_t *vha, struct req_que *req) 123 { 124 cont_a64_entry_t *cont_pkt; 125 126 /* Adjust ring index. */ 127 req->ring_index++; 128 if (req->ring_index == req->length) { 129 req->ring_index = 0; 130 req->ring_ptr = req->ring; 131 } else { 132 req->ring_ptr++; 133 } 134 135 cont_pkt = (cont_a64_entry_t *)req->ring_ptr; 136 137 /* Load packet defaults. */ 138 *((uint32_t *)(&cont_pkt->entry_type)) = 139 __constant_cpu_to_le32(CONTINUE_A64_TYPE); 140 141 return (cont_pkt); 142 } 143 144 static inline int 145 qla24xx_configure_prot_mode(srb_t *sp, uint16_t *fw_prot_opts) 146 { 147 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 148 uint8_t guard = scsi_host_get_guard(cmd->device->host); 149 150 /* We only support T10 DIF right now */ 151 if (guard != SHOST_DIX_GUARD_CRC) { 152 ql_dbg(ql_dbg_io, sp->fcport->vha, 0x3007, 153 "Unsupported guard: %d for cmd=%p.\n", guard, cmd); 154 return 0; 155 } 156 157 /* We always use DIFF Bundling for best performance */ 158 *fw_prot_opts = 0; 159 160 /* Translate SCSI opcode to a protection opcode */ 161 switch (scsi_get_prot_op(cmd)) { 162 case SCSI_PROT_READ_STRIP: 163 *fw_prot_opts |= PO_MODE_DIF_REMOVE; 164 break; 165 case SCSI_PROT_WRITE_INSERT: 166 *fw_prot_opts |= PO_MODE_DIF_INSERT; 167 break; 168 case SCSI_PROT_READ_INSERT: 169 *fw_prot_opts |= PO_MODE_DIF_INSERT; 170 break; 171 case SCSI_PROT_WRITE_STRIP: 172 *fw_prot_opts |= PO_MODE_DIF_REMOVE; 173 break; 174 case SCSI_PROT_READ_PASS: 175 *fw_prot_opts |= PO_MODE_DIF_PASS; 176 break; 177 case SCSI_PROT_WRITE_PASS: 178 *fw_prot_opts |= PO_MODE_DIF_PASS; 179 break; 180 default: /* Normal Request */ 181 *fw_prot_opts |= PO_MODE_DIF_PASS; 182 break; 183 } 184 185 return scsi_prot_sg_count(cmd); 186 } 187 188 /* 189 * qla2x00_build_scsi_iocbs_32() - Build IOCB command utilizing 32bit 190 * capable IOCB types. 191 * 192 * @sp: SRB command to process 193 * @cmd_pkt: Command type 2 IOCB 194 * @tot_dsds: Total number of segments to transfer 195 */ 196 void qla2x00_build_scsi_iocbs_32(srb_t *sp, cmd_entry_t *cmd_pkt, 197 uint16_t tot_dsds) 198 { 199 uint16_t avail_dsds; 200 uint32_t *cur_dsd; 201 scsi_qla_host_t *vha; 202 struct scsi_cmnd *cmd; 203 struct scatterlist *sg; 204 int i; 205 206 cmd = GET_CMD_SP(sp); 207 208 /* Update entry type to indicate Command Type 2 IOCB */ 209 *((uint32_t *)(&cmd_pkt->entry_type)) = 210 __constant_cpu_to_le32(COMMAND_TYPE); 211 212 /* No data transfer */ 213 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) { 214 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 215 return; 216 } 217 218 vha = sp->fcport->vha; 219 cmd_pkt->control_flags |= cpu_to_le16(qla2x00_get_cmd_direction(sp)); 220 221 /* Three DSDs are available in the Command Type 2 IOCB */ 222 avail_dsds = 3; 223 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address; 224 225 /* Load data segments */ 226 scsi_for_each_sg(cmd, sg, tot_dsds, i) { 227 cont_entry_t *cont_pkt; 228 229 /* Allocate additional continuation packets? */ 230 if (avail_dsds == 0) { 231 /* 232 * Seven DSDs are available in the Continuation 233 * Type 0 IOCB. 234 */ 235 cont_pkt = qla2x00_prep_cont_type0_iocb(vha); 236 cur_dsd = (uint32_t *)&cont_pkt->dseg_0_address; 237 avail_dsds = 7; 238 } 239 240 *cur_dsd++ = cpu_to_le32(sg_dma_address(sg)); 241 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 242 avail_dsds--; 243 } 244 } 245 246 /** 247 * qla2x00_build_scsi_iocbs_64() - Build IOCB command utilizing 64bit 248 * capable IOCB types. 249 * 250 * @sp: SRB command to process 251 * @cmd_pkt: Command type 3 IOCB 252 * @tot_dsds: Total number of segments to transfer 253 */ 254 void qla2x00_build_scsi_iocbs_64(srb_t *sp, cmd_entry_t *cmd_pkt, 255 uint16_t tot_dsds) 256 { 257 uint16_t avail_dsds; 258 uint32_t *cur_dsd; 259 scsi_qla_host_t *vha; 260 struct scsi_cmnd *cmd; 261 struct scatterlist *sg; 262 int i; 263 264 cmd = GET_CMD_SP(sp); 265 266 /* Update entry type to indicate Command Type 3 IOCB */ 267 *((uint32_t *)(&cmd_pkt->entry_type)) = 268 __constant_cpu_to_le32(COMMAND_A64_TYPE); 269 270 /* No data transfer */ 271 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) { 272 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 273 return; 274 } 275 276 vha = sp->fcport->vha; 277 cmd_pkt->control_flags |= cpu_to_le16(qla2x00_get_cmd_direction(sp)); 278 279 /* Two DSDs are available in the Command Type 3 IOCB */ 280 avail_dsds = 2; 281 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address; 282 283 /* Load data segments */ 284 scsi_for_each_sg(cmd, sg, tot_dsds, i) { 285 dma_addr_t sle_dma; 286 cont_a64_entry_t *cont_pkt; 287 288 /* Allocate additional continuation packets? */ 289 if (avail_dsds == 0) { 290 /* 291 * Five DSDs are available in the Continuation 292 * Type 1 IOCB. 293 */ 294 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req); 295 cur_dsd = (uint32_t *)cont_pkt->dseg_0_address; 296 avail_dsds = 5; 297 } 298 299 sle_dma = sg_dma_address(sg); 300 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 301 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 302 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 303 avail_dsds--; 304 } 305 } 306 307 /** 308 * qla2x00_start_scsi() - Send a SCSI command to the ISP 309 * @sp: command to send to the ISP 310 * 311 * Returns non-zero if a failure occurred, else zero. 312 */ 313 int 314 qla2x00_start_scsi(srb_t *sp) 315 { 316 int ret, nseg; 317 unsigned long flags; 318 scsi_qla_host_t *vha; 319 struct scsi_cmnd *cmd; 320 uint32_t *clr_ptr; 321 uint32_t index; 322 uint32_t handle; 323 cmd_entry_t *cmd_pkt; 324 uint16_t cnt; 325 uint16_t req_cnt; 326 uint16_t tot_dsds; 327 struct device_reg_2xxx __iomem *reg; 328 struct qla_hw_data *ha; 329 struct req_que *req; 330 struct rsp_que *rsp; 331 char tag[2]; 332 333 /* Setup device pointers. */ 334 ret = 0; 335 vha = sp->fcport->vha; 336 ha = vha->hw; 337 reg = &ha->iobase->isp; 338 cmd = GET_CMD_SP(sp); 339 req = ha->req_q_map[0]; 340 rsp = ha->rsp_q_map[0]; 341 /* So we know we haven't pci_map'ed anything yet */ 342 tot_dsds = 0; 343 344 /* Send marker if required */ 345 if (vha->marker_needed != 0) { 346 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) != 347 QLA_SUCCESS) { 348 return (QLA_FUNCTION_FAILED); 349 } 350 vha->marker_needed = 0; 351 } 352 353 /* Acquire ring specific lock */ 354 spin_lock_irqsave(&ha->hardware_lock, flags); 355 356 /* Check for room in outstanding command list. */ 357 handle = req->current_outstanding_cmd; 358 for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) { 359 handle++; 360 if (handle == MAX_OUTSTANDING_COMMANDS) 361 handle = 1; 362 if (!req->outstanding_cmds[handle]) 363 break; 364 } 365 if (index == MAX_OUTSTANDING_COMMANDS) 366 goto queuing_error; 367 368 /* Map the sg table so we have an accurate count of sg entries needed */ 369 if (scsi_sg_count(cmd)) { 370 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd), 371 scsi_sg_count(cmd), cmd->sc_data_direction); 372 if (unlikely(!nseg)) 373 goto queuing_error; 374 } else 375 nseg = 0; 376 377 tot_dsds = nseg; 378 379 /* Calculate the number of request entries needed. */ 380 req_cnt = ha->isp_ops->calc_req_entries(tot_dsds); 381 if (req->cnt < (req_cnt + 2)) { 382 cnt = RD_REG_WORD_RELAXED(ISP_REQ_Q_OUT(ha, reg)); 383 if (req->ring_index < cnt) 384 req->cnt = cnt - req->ring_index; 385 else 386 req->cnt = req->length - 387 (req->ring_index - cnt); 388 } 389 if (req->cnt < (req_cnt + 2)) 390 goto queuing_error; 391 392 /* Build command packet */ 393 req->current_outstanding_cmd = handle; 394 req->outstanding_cmds[handle] = sp; 395 sp->handle = handle; 396 cmd->host_scribble = (unsigned char *)(unsigned long)handle; 397 req->cnt -= req_cnt; 398 399 cmd_pkt = (cmd_entry_t *)req->ring_ptr; 400 cmd_pkt->handle = handle; 401 /* Zero out remaining portion of packet. */ 402 clr_ptr = (uint32_t *)cmd_pkt + 2; 403 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 404 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 405 406 /* Set target ID and LUN number*/ 407 SET_TARGET_ID(ha, cmd_pkt->target, sp->fcport->loop_id); 408 cmd_pkt->lun = cpu_to_le16(cmd->device->lun); 409 410 /* Update tagged queuing modifier */ 411 if (scsi_populate_tag_msg(cmd, tag)) { 412 switch (tag[0]) { 413 case HEAD_OF_QUEUE_TAG: 414 cmd_pkt->control_flags = 415 __constant_cpu_to_le16(CF_HEAD_TAG); 416 break; 417 case ORDERED_QUEUE_TAG: 418 cmd_pkt->control_flags = 419 __constant_cpu_to_le16(CF_ORDERED_TAG); 420 break; 421 default: 422 cmd_pkt->control_flags = 423 __constant_cpu_to_le16(CF_SIMPLE_TAG); 424 break; 425 } 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 static 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_QLA82XX(ha)) { 480 qla82xx_start_iocbs(vha); 481 } else { 482 /* Adjust ring index. */ 483 req->ring_index++; 484 if (req->ring_index == req->length) { 485 req->ring_index = 0; 486 req->ring_ptr = req->ring; 487 } else 488 req->ring_ptr++; 489 490 /* Set chip new ring index. */ 491 if (ha->mqenable || IS_QLA83XX(ha)) { 492 WRT_REG_DWORD(req->req_q_in, req->ring_index); 493 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr); 494 } else if (IS_FWI2_CAPABLE(ha)) { 495 WRT_REG_DWORD(®->isp24.req_q_in, req->ring_index); 496 RD_REG_DWORD_RELAXED(®->isp24.req_q_in); 497 } else { 498 WRT_REG_WORD(ISP_REQ_Q_IN(ha, ®->isp), 499 req->ring_index); 500 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, ®->isp)); 501 } 502 } 503 } 504 505 /** 506 * qla2x00_marker() - Send a marker IOCB to the firmware. 507 * @ha: HA context 508 * @loop_id: loop ID 509 * @lun: LUN 510 * @type: marker modifier 511 * 512 * Can be called from both normal and interrupt context. 513 * 514 * Returns non-zero if a failure occurred, else zero. 515 */ 516 static int 517 __qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req, 518 struct rsp_que *rsp, uint16_t loop_id, 519 uint16_t lun, uint8_t type) 520 { 521 mrk_entry_t *mrk; 522 struct mrk_entry_24xx *mrk24; 523 struct qla_hw_data *ha = vha->hw; 524 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 525 526 mrk24 = NULL; 527 req = ha->req_q_map[0]; 528 mrk = (mrk_entry_t *)qla2x00_alloc_iocbs(vha, 0); 529 if (mrk == NULL) { 530 ql_log(ql_log_warn, base_vha, 0x3026, 531 "Failed to allocate Marker IOCB.\n"); 532 533 return (QLA_FUNCTION_FAILED); 534 } 535 536 mrk->entry_type = MARKER_TYPE; 537 mrk->modifier = type; 538 if (type != MK_SYNC_ALL) { 539 if (IS_FWI2_CAPABLE(ha)) { 540 mrk24 = (struct mrk_entry_24xx *) mrk; 541 mrk24->nport_handle = cpu_to_le16(loop_id); 542 mrk24->lun[1] = LSB(lun); 543 mrk24->lun[2] = MSB(lun); 544 host_to_fcp_swap(mrk24->lun, sizeof(mrk24->lun)); 545 mrk24->vp_index = vha->vp_idx; 546 mrk24->handle = MAKE_HANDLE(req->id, mrk24->handle); 547 } else { 548 SET_TARGET_ID(ha, mrk->target, loop_id); 549 mrk->lun = cpu_to_le16(lun); 550 } 551 } 552 wmb(); 553 554 qla2x00_start_iocbs(vha, req); 555 556 return (QLA_SUCCESS); 557 } 558 559 int 560 qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req, 561 struct rsp_que *rsp, uint16_t loop_id, uint16_t lun, 562 uint8_t type) 563 { 564 int ret; 565 unsigned long flags = 0; 566 567 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 568 ret = __qla2x00_marker(vha, req, rsp, loop_id, lun, type); 569 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 570 571 return (ret); 572 } 573 574 /** 575 * qla24xx_calc_iocbs() - Determine number of Command Type 3 and 576 * Continuation Type 1 IOCBs to allocate. 577 * 578 * @dsds: number of data segment decriptors needed 579 * 580 * Returns the number of IOCB entries needed to store @dsds. 581 */ 582 inline uint16_t 583 qla24xx_calc_iocbs(scsi_qla_host_t *vha, uint16_t dsds) 584 { 585 uint16_t iocbs; 586 587 iocbs = 1; 588 if (dsds > 1) { 589 iocbs += (dsds - 1) / 5; 590 if ((dsds - 1) % 5) 591 iocbs++; 592 } 593 return iocbs; 594 } 595 596 static inline int 597 qla24xx_build_scsi_type_6_iocbs(srb_t *sp, struct cmd_type_6 *cmd_pkt, 598 uint16_t tot_dsds) 599 { 600 uint32_t *cur_dsd = NULL; 601 scsi_qla_host_t *vha; 602 struct qla_hw_data *ha; 603 struct scsi_cmnd *cmd; 604 struct scatterlist *cur_seg; 605 uint32_t *dsd_seg; 606 void *next_dsd; 607 uint8_t avail_dsds; 608 uint8_t first_iocb = 1; 609 uint32_t dsd_list_len; 610 struct dsd_dma *dsd_ptr; 611 struct ct6_dsd *ctx; 612 613 cmd = GET_CMD_SP(sp); 614 615 /* Update entry type to indicate Command Type 3 IOCB */ 616 *((uint32_t *)(&cmd_pkt->entry_type)) = 617 __constant_cpu_to_le32(COMMAND_TYPE_6); 618 619 /* No data transfer */ 620 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) { 621 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 622 return 0; 623 } 624 625 vha = sp->fcport->vha; 626 ha = vha->hw; 627 628 /* Set transfer direction */ 629 if (cmd->sc_data_direction == DMA_TO_DEVICE) { 630 cmd_pkt->control_flags = 631 __constant_cpu_to_le16(CF_WRITE_DATA); 632 ha->qla_stats.output_bytes += scsi_bufflen(cmd); 633 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) { 634 cmd_pkt->control_flags = 635 __constant_cpu_to_le16(CF_READ_DATA); 636 ha->qla_stats.input_bytes += scsi_bufflen(cmd); 637 } 638 639 cur_seg = scsi_sglist(cmd); 640 ctx = GET_CMD_CTX_SP(sp); 641 642 while (tot_dsds) { 643 avail_dsds = (tot_dsds > QLA_DSDS_PER_IOCB) ? 644 QLA_DSDS_PER_IOCB : tot_dsds; 645 tot_dsds -= avail_dsds; 646 dsd_list_len = (avail_dsds + 1) * QLA_DSD_SIZE; 647 648 dsd_ptr = list_first_entry(&ha->gbl_dsd_list, 649 struct dsd_dma, list); 650 next_dsd = dsd_ptr->dsd_addr; 651 list_del(&dsd_ptr->list); 652 ha->gbl_dsd_avail--; 653 list_add_tail(&dsd_ptr->list, &ctx->dsd_list); 654 ctx->dsd_use_cnt++; 655 ha->gbl_dsd_inuse++; 656 657 if (first_iocb) { 658 first_iocb = 0; 659 dsd_seg = (uint32_t *)&cmd_pkt->fcp_data_dseg_address; 660 *dsd_seg++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 661 *dsd_seg++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 662 cmd_pkt->fcp_data_dseg_len = cpu_to_le32(dsd_list_len); 663 } else { 664 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 665 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 666 *cur_dsd++ = cpu_to_le32(dsd_list_len); 667 } 668 cur_dsd = (uint32_t *)next_dsd; 669 while (avail_dsds) { 670 dma_addr_t sle_dma; 671 672 sle_dma = sg_dma_address(cur_seg); 673 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 674 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 675 *cur_dsd++ = cpu_to_le32(sg_dma_len(cur_seg)); 676 cur_seg = sg_next(cur_seg); 677 avail_dsds--; 678 } 679 } 680 681 /* Null termination */ 682 *cur_dsd++ = 0; 683 *cur_dsd++ = 0; 684 *cur_dsd++ = 0; 685 cmd_pkt->control_flags |= CF_DATA_SEG_DESCR_ENABLE; 686 return 0; 687 } 688 689 /* 690 * qla24xx_calc_dsd_lists() - Determine number of DSD list required 691 * for Command Type 6. 692 * 693 * @dsds: number of data segment decriptors needed 694 * 695 * Returns the number of dsd list needed to store @dsds. 696 */ 697 inline uint16_t 698 qla24xx_calc_dsd_lists(uint16_t dsds) 699 { 700 uint16_t dsd_lists = 0; 701 702 dsd_lists = (dsds/QLA_DSDS_PER_IOCB); 703 if (dsds % QLA_DSDS_PER_IOCB) 704 dsd_lists++; 705 return dsd_lists; 706 } 707 708 709 /** 710 * qla24xx_build_scsi_iocbs() - Build IOCB command utilizing Command Type 7 711 * IOCB types. 712 * 713 * @sp: SRB command to process 714 * @cmd_pkt: Command type 3 IOCB 715 * @tot_dsds: Total number of segments to transfer 716 */ 717 inline void 718 qla24xx_build_scsi_iocbs(srb_t *sp, struct cmd_type_7 *cmd_pkt, 719 uint16_t tot_dsds) 720 { 721 uint16_t avail_dsds; 722 uint32_t *cur_dsd; 723 scsi_qla_host_t *vha; 724 struct scsi_cmnd *cmd; 725 struct scatterlist *sg; 726 int i; 727 struct req_que *req; 728 729 cmd = GET_CMD_SP(sp); 730 731 /* Update entry type to indicate Command Type 3 IOCB */ 732 *((uint32_t *)(&cmd_pkt->entry_type)) = 733 __constant_cpu_to_le32(COMMAND_TYPE_7); 734 735 /* No data transfer */ 736 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) { 737 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 738 return; 739 } 740 741 vha = sp->fcport->vha; 742 req = vha->req; 743 744 /* Set transfer direction */ 745 if (cmd->sc_data_direction == DMA_TO_DEVICE) { 746 cmd_pkt->task_mgmt_flags = 747 __constant_cpu_to_le16(TMF_WRITE_DATA); 748 sp->fcport->vha->hw->qla_stats.output_bytes += 749 scsi_bufflen(cmd); 750 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) { 751 cmd_pkt->task_mgmt_flags = 752 __constant_cpu_to_le16(TMF_READ_DATA); 753 sp->fcport->vha->hw->qla_stats.input_bytes += 754 scsi_bufflen(cmd); 755 } 756 757 /* One DSD is available in the Command Type 3 IOCB */ 758 avail_dsds = 1; 759 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address; 760 761 /* Load data segments */ 762 763 scsi_for_each_sg(cmd, sg, tot_dsds, i) { 764 dma_addr_t sle_dma; 765 cont_a64_entry_t *cont_pkt; 766 767 /* Allocate additional continuation packets? */ 768 if (avail_dsds == 0) { 769 /* 770 * Five DSDs are available in the Continuation 771 * Type 1 IOCB. 772 */ 773 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req); 774 cur_dsd = (uint32_t *)cont_pkt->dseg_0_address; 775 avail_dsds = 5; 776 } 777 778 sle_dma = sg_dma_address(sg); 779 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 780 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 781 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 782 avail_dsds--; 783 } 784 } 785 786 struct fw_dif_context { 787 uint32_t ref_tag; 788 uint16_t app_tag; 789 uint8_t ref_tag_mask[4]; /* Validation/Replacement Mask*/ 790 uint8_t app_tag_mask[2]; /* Validation/Replacement Mask*/ 791 }; 792 793 /* 794 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command 795 * 796 */ 797 static inline void 798 qla24xx_set_t10dif_tags(srb_t *sp, struct fw_dif_context *pkt, 799 unsigned int protcnt) 800 { 801 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 802 scsi_qla_host_t *vha = shost_priv(cmd->device->host); 803 804 switch (scsi_get_prot_type(cmd)) { 805 case SCSI_PROT_DIF_TYPE0: 806 /* 807 * No check for ql2xenablehba_err_chk, as it would be an 808 * I/O error if hba tag generation is not done. 809 */ 810 pkt->ref_tag = cpu_to_le32((uint32_t) 811 (0xffffffff & scsi_get_lba(cmd))); 812 813 if (!qla2x00_hba_err_chk_enabled(sp)) 814 break; 815 816 pkt->ref_tag_mask[0] = 0xff; 817 pkt->ref_tag_mask[1] = 0xff; 818 pkt->ref_tag_mask[2] = 0xff; 819 pkt->ref_tag_mask[3] = 0xff; 820 break; 821 822 /* 823 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to 824 * match LBA in CDB + N 825 */ 826 case SCSI_PROT_DIF_TYPE2: 827 pkt->app_tag = __constant_cpu_to_le16(0); 828 pkt->app_tag_mask[0] = 0x0; 829 pkt->app_tag_mask[1] = 0x0; 830 831 pkt->ref_tag = cpu_to_le32((uint32_t) 832 (0xffffffff & scsi_get_lba(cmd))); 833 834 if (!qla2x00_hba_err_chk_enabled(sp)) 835 break; 836 837 /* enable ALL bytes of the ref tag */ 838 pkt->ref_tag_mask[0] = 0xff; 839 pkt->ref_tag_mask[1] = 0xff; 840 pkt->ref_tag_mask[2] = 0xff; 841 pkt->ref_tag_mask[3] = 0xff; 842 break; 843 844 /* For Type 3 protection: 16 bit GUARD only */ 845 case SCSI_PROT_DIF_TYPE3: 846 pkt->ref_tag_mask[0] = pkt->ref_tag_mask[1] = 847 pkt->ref_tag_mask[2] = pkt->ref_tag_mask[3] = 848 0x00; 849 break; 850 851 /* 852 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and 853 * 16 bit app tag. 854 */ 855 case SCSI_PROT_DIF_TYPE1: 856 pkt->ref_tag = cpu_to_le32((uint32_t) 857 (0xffffffff & scsi_get_lba(cmd))); 858 pkt->app_tag = __constant_cpu_to_le16(0); 859 pkt->app_tag_mask[0] = 0x0; 860 pkt->app_tag_mask[1] = 0x0; 861 862 if (!qla2x00_hba_err_chk_enabled(sp)) 863 break; 864 865 /* enable ALL bytes of the ref tag */ 866 pkt->ref_tag_mask[0] = 0xff; 867 pkt->ref_tag_mask[1] = 0xff; 868 pkt->ref_tag_mask[2] = 0xff; 869 pkt->ref_tag_mask[3] = 0xff; 870 break; 871 } 872 873 ql_dbg(ql_dbg_io, vha, 0x3009, 874 "Setting protection Tags: (BIG) ref tag = 0x%x, app tag = 0x%x, " 875 "prot SG count %d, cmd lba 0x%x, prot_type=%u cmd=%p.\n", 876 pkt->ref_tag, pkt->app_tag, protcnt, (int)scsi_get_lba(cmd), 877 scsi_get_prot_type(cmd), cmd); 878 } 879 880 struct qla2_sgx { 881 dma_addr_t dma_addr; /* OUT */ 882 uint32_t dma_len; /* OUT */ 883 884 uint32_t tot_bytes; /* IN */ 885 struct scatterlist *cur_sg; /* IN */ 886 887 /* for book keeping, bzero on initial invocation */ 888 uint32_t bytes_consumed; 889 uint32_t num_bytes; 890 uint32_t tot_partial; 891 892 /* for debugging */ 893 uint32_t num_sg; 894 srb_t *sp; 895 }; 896 897 static int 898 qla24xx_get_one_block_sg(uint32_t blk_sz, struct qla2_sgx *sgx, 899 uint32_t *partial) 900 { 901 struct scatterlist *sg; 902 uint32_t cumulative_partial, sg_len; 903 dma_addr_t sg_dma_addr; 904 905 if (sgx->num_bytes == sgx->tot_bytes) 906 return 0; 907 908 sg = sgx->cur_sg; 909 cumulative_partial = sgx->tot_partial; 910 911 sg_dma_addr = sg_dma_address(sg); 912 sg_len = sg_dma_len(sg); 913 914 sgx->dma_addr = sg_dma_addr + sgx->bytes_consumed; 915 916 if ((cumulative_partial + (sg_len - sgx->bytes_consumed)) >= blk_sz) { 917 sgx->dma_len = (blk_sz - cumulative_partial); 918 sgx->tot_partial = 0; 919 sgx->num_bytes += blk_sz; 920 *partial = 0; 921 } else { 922 sgx->dma_len = sg_len - sgx->bytes_consumed; 923 sgx->tot_partial += sgx->dma_len; 924 *partial = 1; 925 } 926 927 sgx->bytes_consumed += sgx->dma_len; 928 929 if (sg_len == sgx->bytes_consumed) { 930 sg = sg_next(sg); 931 sgx->num_sg++; 932 sgx->cur_sg = sg; 933 sgx->bytes_consumed = 0; 934 } 935 936 return 1; 937 } 938 939 static int 940 qla24xx_walk_and_build_sglist_no_difb(struct qla_hw_data *ha, srb_t *sp, 941 uint32_t *dsd, uint16_t tot_dsds) 942 { 943 void *next_dsd; 944 uint8_t avail_dsds = 0; 945 uint32_t dsd_list_len; 946 struct dsd_dma *dsd_ptr; 947 struct scatterlist *sg_prot; 948 uint32_t *cur_dsd = dsd; 949 uint16_t used_dsds = tot_dsds; 950 951 uint32_t prot_int; 952 uint32_t partial; 953 struct qla2_sgx sgx; 954 dma_addr_t sle_dma; 955 uint32_t sle_dma_len, tot_prot_dma_len = 0; 956 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 957 958 prot_int = cmd->device->sector_size; 959 960 memset(&sgx, 0, sizeof(struct qla2_sgx)); 961 sgx.tot_bytes = scsi_bufflen(cmd); 962 sgx.cur_sg = scsi_sglist(cmd); 963 sgx.sp = sp; 964 965 sg_prot = scsi_prot_sglist(cmd); 966 967 while (qla24xx_get_one_block_sg(prot_int, &sgx, &partial)) { 968 969 sle_dma = sgx.dma_addr; 970 sle_dma_len = sgx.dma_len; 971 alloc_and_fill: 972 /* Allocate additional continuation packets? */ 973 if (avail_dsds == 0) { 974 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ? 975 QLA_DSDS_PER_IOCB : used_dsds; 976 dsd_list_len = (avail_dsds + 1) * 12; 977 used_dsds -= avail_dsds; 978 979 /* allocate tracking DS */ 980 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC); 981 if (!dsd_ptr) 982 return 1; 983 984 /* allocate new list */ 985 dsd_ptr->dsd_addr = next_dsd = 986 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, 987 &dsd_ptr->dsd_list_dma); 988 989 if (!next_dsd) { 990 /* 991 * Need to cleanup only this dsd_ptr, rest 992 * will be done by sp_free_dma() 993 */ 994 kfree(dsd_ptr); 995 return 1; 996 } 997 998 list_add_tail(&dsd_ptr->list, 999 &((struct crc_context *)sp->u.scmd.ctx)->dsd_list); 1000 1001 sp->flags |= SRB_CRC_CTX_DSD_VALID; 1002 1003 /* add new list to cmd iocb or last list */ 1004 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 1005 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 1006 *cur_dsd++ = dsd_list_len; 1007 cur_dsd = (uint32_t *)next_dsd; 1008 } 1009 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 1010 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 1011 *cur_dsd++ = cpu_to_le32(sle_dma_len); 1012 avail_dsds--; 1013 1014 if (partial == 0) { 1015 /* Got a full protection interval */ 1016 sle_dma = sg_dma_address(sg_prot) + tot_prot_dma_len; 1017 sle_dma_len = 8; 1018 1019 tot_prot_dma_len += sle_dma_len; 1020 if (tot_prot_dma_len == sg_dma_len(sg_prot)) { 1021 tot_prot_dma_len = 0; 1022 sg_prot = sg_next(sg_prot); 1023 } 1024 1025 partial = 1; /* So as to not re-enter this block */ 1026 goto alloc_and_fill; 1027 } 1028 } 1029 /* Null termination */ 1030 *cur_dsd++ = 0; 1031 *cur_dsd++ = 0; 1032 *cur_dsd++ = 0; 1033 return 0; 1034 } 1035 1036 static int 1037 qla24xx_walk_and_build_sglist(struct qla_hw_data *ha, srb_t *sp, uint32_t *dsd, 1038 uint16_t tot_dsds) 1039 { 1040 void *next_dsd; 1041 uint8_t avail_dsds = 0; 1042 uint32_t dsd_list_len; 1043 struct dsd_dma *dsd_ptr; 1044 struct scatterlist *sg; 1045 uint32_t *cur_dsd = dsd; 1046 int i; 1047 uint16_t used_dsds = tot_dsds; 1048 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 1049 scsi_qla_host_t *vha = shost_priv(cmd->device->host); 1050 1051 uint8_t *cp; 1052 1053 scsi_for_each_sg(cmd, sg, tot_dsds, i) { 1054 dma_addr_t sle_dma; 1055 1056 /* Allocate additional continuation packets? */ 1057 if (avail_dsds == 0) { 1058 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ? 1059 QLA_DSDS_PER_IOCB : used_dsds; 1060 dsd_list_len = (avail_dsds + 1) * 12; 1061 used_dsds -= avail_dsds; 1062 1063 /* allocate tracking DS */ 1064 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC); 1065 if (!dsd_ptr) 1066 return 1; 1067 1068 /* allocate new list */ 1069 dsd_ptr->dsd_addr = next_dsd = 1070 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, 1071 &dsd_ptr->dsd_list_dma); 1072 1073 if (!next_dsd) { 1074 /* 1075 * Need to cleanup only this dsd_ptr, rest 1076 * will be done by sp_free_dma() 1077 */ 1078 kfree(dsd_ptr); 1079 return 1; 1080 } 1081 1082 list_add_tail(&dsd_ptr->list, 1083 &((struct crc_context *)sp->u.scmd.ctx)->dsd_list); 1084 1085 sp->flags |= SRB_CRC_CTX_DSD_VALID; 1086 1087 /* add new list to cmd iocb or last list */ 1088 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 1089 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 1090 *cur_dsd++ = dsd_list_len; 1091 cur_dsd = (uint32_t *)next_dsd; 1092 } 1093 sle_dma = sg_dma_address(sg); 1094 ql_dbg(ql_dbg_io, vha, 0x300a, 1095 "sg entry %d - addr=0x%x 0x%x, " "len=%d for cmd=%p.\n", 1096 i, LSD(sle_dma), MSD(sle_dma), sg_dma_len(sg), cmd); 1097 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 1098 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 1099 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 1100 avail_dsds--; 1101 1102 if (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_PASS) { 1103 cp = page_address(sg_page(sg)) + sg->offset; 1104 ql_dbg(ql_dbg_io, vha, 0x300b, 1105 "User data buffer=%p for cmd=%p.\n", cp, cmd); 1106 } 1107 } 1108 /* Null termination */ 1109 *cur_dsd++ = 0; 1110 *cur_dsd++ = 0; 1111 *cur_dsd++ = 0; 1112 return 0; 1113 } 1114 1115 static int 1116 qla24xx_walk_and_build_prot_sglist(struct qla_hw_data *ha, srb_t *sp, 1117 uint32_t *dsd, 1118 uint16_t tot_dsds) 1119 { 1120 void *next_dsd; 1121 uint8_t avail_dsds = 0; 1122 uint32_t dsd_list_len; 1123 struct dsd_dma *dsd_ptr; 1124 struct scatterlist *sg; 1125 int i; 1126 struct scsi_cmnd *cmd; 1127 uint32_t *cur_dsd = dsd; 1128 uint16_t used_dsds = tot_dsds; 1129 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1130 uint8_t *cp; 1131 1132 cmd = GET_CMD_SP(sp); 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->u.scmd.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(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(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 = GET_CMD_SP(sp); 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(cmd) == SCSI_PROT_READ_INSERT) || 1260 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP) || 1261 (scsi_get_prot_op(cmd) == SCSI_PROT_READ_STRIP) || 1262 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_INSERT)) 1263 bundling = 0; 1264 1265 /* Allocate CRC context from global pool */ 1266 crc_ctx_pkt = sp->u.scmd.ctx = 1267 dma_pool_alloc(ha->dl_dma_pool, 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(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(GET_CMD_SP(sp))) { 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 = GET_CMD_SP(sp); 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 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(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 = GET_CMD_SP(sp); 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 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(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 = GET_CMD_SP(sp); 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 1822 pkt = NULL; 1823 req_cnt = 1; 1824 handle = 0; 1825 1826 if (!sp) 1827 goto skip_cmd_array; 1828 1829 /* Check for room in outstanding command list. */ 1830 handle = req->current_outstanding_cmd; 1831 for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) { 1832 handle++; 1833 if (handle == MAX_OUTSTANDING_COMMANDS) 1834 handle = 1; 1835 if (!req->outstanding_cmds[handle]) 1836 break; 1837 } 1838 if (index == MAX_OUTSTANDING_COMMANDS) { 1839 ql_log(ql_log_warn, vha, 0x700b, 1840 "No room on oustanding cmd array.\n"); 1841 goto queuing_error; 1842 } 1843 1844 /* Prep command array. */ 1845 req->current_outstanding_cmd = handle; 1846 req->outstanding_cmds[handle] = sp; 1847 sp->handle = handle; 1848 1849 /* Adjust entry-counts as needed. */ 1850 if (sp->type != SRB_SCSI_CMD) 1851 req_cnt = sp->iocbs; 1852 1853 skip_cmd_array: 1854 /* Check for room on request queue. */ 1855 if (req->cnt < req_cnt) { 1856 if (ha->mqenable || IS_QLA83XX(ha)) 1857 cnt = RD_REG_DWORD(®->isp25mq.req_q_out); 1858 else if (IS_QLA82XX(ha)) 1859 cnt = RD_REG_DWORD(®->isp82.req_q_out); 1860 else if (IS_FWI2_CAPABLE(ha)) 1861 cnt = RD_REG_DWORD(®->isp24.req_q_out); 1862 else 1863 cnt = qla2x00_debounce_register( 1864 ISP_REQ_Q_OUT(ha, ®->isp)); 1865 1866 if (req->ring_index < cnt) 1867 req->cnt = cnt - req->ring_index; 1868 else 1869 req->cnt = req->length - 1870 (req->ring_index - cnt); 1871 } 1872 if (req->cnt < req_cnt) 1873 goto queuing_error; 1874 1875 /* Prep packet */ 1876 req->cnt -= req_cnt; 1877 pkt = req->ring_ptr; 1878 memset(pkt, 0, REQUEST_ENTRY_SIZE); 1879 pkt->entry_count = req_cnt; 1880 pkt->handle = handle; 1881 1882 queuing_error: 1883 return pkt; 1884 } 1885 1886 static void 1887 qla24xx_login_iocb(srb_t *sp, struct logio_entry_24xx *logio) 1888 { 1889 struct srb_iocb *lio = &sp->u.iocb_cmd; 1890 1891 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; 1892 logio->control_flags = cpu_to_le16(LCF_COMMAND_PLOGI); 1893 if (lio->u.logio.flags & SRB_LOGIN_COND_PLOGI) 1894 logio->control_flags |= cpu_to_le16(LCF_COND_PLOGI); 1895 if (lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI) 1896 logio->control_flags |= cpu_to_le16(LCF_SKIP_PRLI); 1897 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1898 logio->port_id[0] = sp->fcport->d_id.b.al_pa; 1899 logio->port_id[1] = sp->fcport->d_id.b.area; 1900 logio->port_id[2] = sp->fcport->d_id.b.domain; 1901 logio->vp_index = sp->fcport->vp_idx; 1902 } 1903 1904 static void 1905 qla2x00_login_iocb(srb_t *sp, struct mbx_entry *mbx) 1906 { 1907 struct qla_hw_data *ha = sp->fcport->vha->hw; 1908 struct srb_iocb *lio = &sp->u.iocb_cmd; 1909 uint16_t opts; 1910 1911 mbx->entry_type = MBX_IOCB_TYPE; 1912 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id); 1913 mbx->mb0 = cpu_to_le16(MBC_LOGIN_FABRIC_PORT); 1914 opts = lio->u.logio.flags & SRB_LOGIN_COND_PLOGI ? BIT_0 : 0; 1915 opts |= lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI ? BIT_1 : 0; 1916 if (HAS_EXTENDED_IDS(ha)) { 1917 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id); 1918 mbx->mb10 = cpu_to_le16(opts); 1919 } else { 1920 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | opts); 1921 } 1922 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain); 1923 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 | 1924 sp->fcport->d_id.b.al_pa); 1925 mbx->mb9 = cpu_to_le16(sp->fcport->vp_idx); 1926 } 1927 1928 static void 1929 qla24xx_logout_iocb(srb_t *sp, struct logio_entry_24xx *logio) 1930 { 1931 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; 1932 logio->control_flags = 1933 cpu_to_le16(LCF_COMMAND_LOGO|LCF_IMPL_LOGO); 1934 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1935 logio->port_id[0] = sp->fcport->d_id.b.al_pa; 1936 logio->port_id[1] = sp->fcport->d_id.b.area; 1937 logio->port_id[2] = sp->fcport->d_id.b.domain; 1938 logio->vp_index = sp->fcport->vp_idx; 1939 } 1940 1941 static void 1942 qla2x00_logout_iocb(srb_t *sp, struct mbx_entry *mbx) 1943 { 1944 struct qla_hw_data *ha = sp->fcport->vha->hw; 1945 1946 mbx->entry_type = MBX_IOCB_TYPE; 1947 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id); 1948 mbx->mb0 = cpu_to_le16(MBC_LOGOUT_FABRIC_PORT); 1949 mbx->mb1 = HAS_EXTENDED_IDS(ha) ? 1950 cpu_to_le16(sp->fcport->loop_id): 1951 cpu_to_le16(sp->fcport->loop_id << 8); 1952 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain); 1953 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 | 1954 sp->fcport->d_id.b.al_pa); 1955 mbx->mb9 = cpu_to_le16(sp->fcport->vp_idx); 1956 /* Implicit: mbx->mbx10 = 0. */ 1957 } 1958 1959 static void 1960 qla24xx_adisc_iocb(srb_t *sp, struct logio_entry_24xx *logio) 1961 { 1962 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; 1963 logio->control_flags = cpu_to_le16(LCF_COMMAND_ADISC); 1964 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1965 logio->vp_index = sp->fcport->vp_idx; 1966 } 1967 1968 static void 1969 qla2x00_adisc_iocb(srb_t *sp, struct mbx_entry *mbx) 1970 { 1971 struct qla_hw_data *ha = sp->fcport->vha->hw; 1972 1973 mbx->entry_type = MBX_IOCB_TYPE; 1974 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id); 1975 mbx->mb0 = cpu_to_le16(MBC_GET_PORT_DATABASE); 1976 if (HAS_EXTENDED_IDS(ha)) { 1977 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id); 1978 mbx->mb10 = cpu_to_le16(BIT_0); 1979 } else { 1980 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | BIT_0); 1981 } 1982 mbx->mb2 = cpu_to_le16(MSW(ha->async_pd_dma)); 1983 mbx->mb3 = cpu_to_le16(LSW(ha->async_pd_dma)); 1984 mbx->mb6 = cpu_to_le16(MSW(MSD(ha->async_pd_dma))); 1985 mbx->mb7 = cpu_to_le16(LSW(MSD(ha->async_pd_dma))); 1986 mbx->mb9 = cpu_to_le16(sp->fcport->vp_idx); 1987 } 1988 1989 static void 1990 qla24xx_tm_iocb(srb_t *sp, struct tsk_mgmt_entry *tsk) 1991 { 1992 uint32_t flags; 1993 unsigned int lun; 1994 struct fc_port *fcport = sp->fcport; 1995 scsi_qla_host_t *vha = fcport->vha; 1996 struct qla_hw_data *ha = vha->hw; 1997 struct srb_iocb *iocb = &sp->u.iocb_cmd; 1998 struct req_que *req = vha->req; 1999 2000 flags = iocb->u.tmf.flags; 2001 lun = iocb->u.tmf.lun; 2002 2003 tsk->entry_type = TSK_MGMT_IOCB_TYPE; 2004 tsk->entry_count = 1; 2005 tsk->handle = MAKE_HANDLE(req->id, tsk->handle); 2006 tsk->nport_handle = cpu_to_le16(fcport->loop_id); 2007 tsk->timeout = cpu_to_le16(ha->r_a_tov / 10 * 2); 2008 tsk->control_flags = cpu_to_le32(flags); 2009 tsk->port_id[0] = fcport->d_id.b.al_pa; 2010 tsk->port_id[1] = fcport->d_id.b.area; 2011 tsk->port_id[2] = fcport->d_id.b.domain; 2012 tsk->vp_index = fcport->vp_idx; 2013 2014 if (flags == TCF_LUN_RESET) { 2015 int_to_scsilun(lun, &tsk->lun); 2016 host_to_fcp_swap((uint8_t *)&tsk->lun, 2017 sizeof(tsk->lun)); 2018 } 2019 } 2020 2021 static void 2022 qla24xx_els_iocb(srb_t *sp, struct els_entry_24xx *els_iocb) 2023 { 2024 struct fc_bsg_job *bsg_job = sp->u.bsg_job; 2025 2026 els_iocb->entry_type = ELS_IOCB_TYPE; 2027 els_iocb->entry_count = 1; 2028 els_iocb->sys_define = 0; 2029 els_iocb->entry_status = 0; 2030 els_iocb->handle = sp->handle; 2031 els_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2032 els_iocb->tx_dsd_count = __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt); 2033 els_iocb->vp_index = sp->fcport->vp_idx; 2034 els_iocb->sof_type = EST_SOFI3; 2035 els_iocb->rx_dsd_count = __constant_cpu_to_le16(bsg_job->reply_payload.sg_cnt); 2036 2037 els_iocb->opcode = 2038 sp->type == SRB_ELS_CMD_RPT ? 2039 bsg_job->request->rqst_data.r_els.els_code : 2040 bsg_job->request->rqst_data.h_els.command_code; 2041 els_iocb->port_id[0] = sp->fcport->d_id.b.al_pa; 2042 els_iocb->port_id[1] = sp->fcport->d_id.b.area; 2043 els_iocb->port_id[2] = sp->fcport->d_id.b.domain; 2044 els_iocb->control_flags = 0; 2045 els_iocb->rx_byte_count = 2046 cpu_to_le32(bsg_job->reply_payload.payload_len); 2047 els_iocb->tx_byte_count = 2048 cpu_to_le32(bsg_job->request_payload.payload_len); 2049 2050 els_iocb->tx_address[0] = cpu_to_le32(LSD(sg_dma_address 2051 (bsg_job->request_payload.sg_list))); 2052 els_iocb->tx_address[1] = cpu_to_le32(MSD(sg_dma_address 2053 (bsg_job->request_payload.sg_list))); 2054 els_iocb->tx_len = cpu_to_le32(sg_dma_len 2055 (bsg_job->request_payload.sg_list)); 2056 2057 els_iocb->rx_address[0] = cpu_to_le32(LSD(sg_dma_address 2058 (bsg_job->reply_payload.sg_list))); 2059 els_iocb->rx_address[1] = cpu_to_le32(MSD(sg_dma_address 2060 (bsg_job->reply_payload.sg_list))); 2061 els_iocb->rx_len = cpu_to_le32(sg_dma_len 2062 (bsg_job->reply_payload.sg_list)); 2063 } 2064 2065 static void 2066 qla2x00_ct_iocb(srb_t *sp, ms_iocb_entry_t *ct_iocb) 2067 { 2068 uint16_t avail_dsds; 2069 uint32_t *cur_dsd; 2070 struct scatterlist *sg; 2071 int index; 2072 uint16_t tot_dsds; 2073 scsi_qla_host_t *vha = sp->fcport->vha; 2074 struct qla_hw_data *ha = vha->hw; 2075 struct fc_bsg_job *bsg_job = sp->u.bsg_job; 2076 int loop_iterartion = 0; 2077 int cont_iocb_prsnt = 0; 2078 int entry_count = 1; 2079 2080 memset(ct_iocb, 0, sizeof(ms_iocb_entry_t)); 2081 ct_iocb->entry_type = CT_IOCB_TYPE; 2082 ct_iocb->entry_status = 0; 2083 ct_iocb->handle1 = sp->handle; 2084 SET_TARGET_ID(ha, ct_iocb->loop_id, sp->fcport->loop_id); 2085 ct_iocb->status = __constant_cpu_to_le16(0); 2086 ct_iocb->control_flags = __constant_cpu_to_le16(0); 2087 ct_iocb->timeout = 0; 2088 ct_iocb->cmd_dsd_count = 2089 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt); 2090 ct_iocb->total_dsd_count = 2091 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt + 1); 2092 ct_iocb->req_bytecount = 2093 cpu_to_le32(bsg_job->request_payload.payload_len); 2094 ct_iocb->rsp_bytecount = 2095 cpu_to_le32(bsg_job->reply_payload.payload_len); 2096 2097 ct_iocb->dseg_req_address[0] = cpu_to_le32(LSD(sg_dma_address 2098 (bsg_job->request_payload.sg_list))); 2099 ct_iocb->dseg_req_address[1] = cpu_to_le32(MSD(sg_dma_address 2100 (bsg_job->request_payload.sg_list))); 2101 ct_iocb->dseg_req_length = ct_iocb->req_bytecount; 2102 2103 ct_iocb->dseg_rsp_address[0] = cpu_to_le32(LSD(sg_dma_address 2104 (bsg_job->reply_payload.sg_list))); 2105 ct_iocb->dseg_rsp_address[1] = cpu_to_le32(MSD(sg_dma_address 2106 (bsg_job->reply_payload.sg_list))); 2107 ct_iocb->dseg_rsp_length = ct_iocb->rsp_bytecount; 2108 2109 avail_dsds = 1; 2110 cur_dsd = (uint32_t *)ct_iocb->dseg_rsp_address; 2111 index = 0; 2112 tot_dsds = bsg_job->reply_payload.sg_cnt; 2113 2114 for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) { 2115 dma_addr_t sle_dma; 2116 cont_a64_entry_t *cont_pkt; 2117 2118 /* Allocate additional continuation packets? */ 2119 if (avail_dsds == 0) { 2120 /* 2121 * Five DSDs are available in the Cont. 2122 * Type 1 IOCB. 2123 */ 2124 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, 2125 vha->hw->req_q_map[0]); 2126 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address; 2127 avail_dsds = 5; 2128 cont_iocb_prsnt = 1; 2129 entry_count++; 2130 } 2131 2132 sle_dma = sg_dma_address(sg); 2133 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 2134 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 2135 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 2136 loop_iterartion++; 2137 avail_dsds--; 2138 } 2139 ct_iocb->entry_count = entry_count; 2140 } 2141 2142 static void 2143 qla24xx_ct_iocb(srb_t *sp, struct ct_entry_24xx *ct_iocb) 2144 { 2145 uint16_t avail_dsds; 2146 uint32_t *cur_dsd; 2147 struct scatterlist *sg; 2148 int index; 2149 uint16_t tot_dsds; 2150 scsi_qla_host_t *vha = sp->fcport->vha; 2151 struct qla_hw_data *ha = vha->hw; 2152 struct fc_bsg_job *bsg_job = sp->u.bsg_job; 2153 int loop_iterartion = 0; 2154 int cont_iocb_prsnt = 0; 2155 int entry_count = 1; 2156 2157 ct_iocb->entry_type = CT_IOCB_TYPE; 2158 ct_iocb->entry_status = 0; 2159 ct_iocb->sys_define = 0; 2160 ct_iocb->handle = sp->handle; 2161 2162 ct_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2163 ct_iocb->vp_index = sp->fcport->vp_idx; 2164 ct_iocb->comp_status = __constant_cpu_to_le16(0); 2165 2166 ct_iocb->cmd_dsd_count = 2167 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt); 2168 ct_iocb->timeout = 0; 2169 ct_iocb->rsp_dsd_count = 2170 __constant_cpu_to_le16(bsg_job->reply_payload.sg_cnt); 2171 ct_iocb->rsp_byte_count = 2172 cpu_to_le32(bsg_job->reply_payload.payload_len); 2173 ct_iocb->cmd_byte_count = 2174 cpu_to_le32(bsg_job->request_payload.payload_len); 2175 ct_iocb->dseg_0_address[0] = cpu_to_le32(LSD(sg_dma_address 2176 (bsg_job->request_payload.sg_list))); 2177 ct_iocb->dseg_0_address[1] = cpu_to_le32(MSD(sg_dma_address 2178 (bsg_job->request_payload.sg_list))); 2179 ct_iocb->dseg_0_len = cpu_to_le32(sg_dma_len 2180 (bsg_job->request_payload.sg_list)); 2181 2182 avail_dsds = 1; 2183 cur_dsd = (uint32_t *)ct_iocb->dseg_1_address; 2184 index = 0; 2185 tot_dsds = bsg_job->reply_payload.sg_cnt; 2186 2187 for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) { 2188 dma_addr_t sle_dma; 2189 cont_a64_entry_t *cont_pkt; 2190 2191 /* Allocate additional continuation packets? */ 2192 if (avail_dsds == 0) { 2193 /* 2194 * Five DSDs are available in the Cont. 2195 * Type 1 IOCB. 2196 */ 2197 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, 2198 ha->req_q_map[0]); 2199 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address; 2200 avail_dsds = 5; 2201 cont_iocb_prsnt = 1; 2202 entry_count++; 2203 } 2204 2205 sle_dma = sg_dma_address(sg); 2206 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 2207 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 2208 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 2209 loop_iterartion++; 2210 avail_dsds--; 2211 } 2212 ct_iocb->entry_count = entry_count; 2213 } 2214 2215 /* 2216 * qla82xx_start_scsi() - Send a SCSI command to the ISP 2217 * @sp: command to send to the ISP 2218 * 2219 * Returns non-zero if a failure occurred, else zero. 2220 */ 2221 int 2222 qla82xx_start_scsi(srb_t *sp) 2223 { 2224 int ret, nseg; 2225 unsigned long flags; 2226 struct scsi_cmnd *cmd; 2227 uint32_t *clr_ptr; 2228 uint32_t index; 2229 uint32_t handle; 2230 uint16_t cnt; 2231 uint16_t req_cnt; 2232 uint16_t tot_dsds; 2233 struct device_reg_82xx __iomem *reg; 2234 uint32_t dbval; 2235 uint32_t *fcp_dl; 2236 uint8_t additional_cdb_len; 2237 struct ct6_dsd *ctx; 2238 struct scsi_qla_host *vha = sp->fcport->vha; 2239 struct qla_hw_data *ha = vha->hw; 2240 struct req_que *req = NULL; 2241 struct rsp_que *rsp = NULL; 2242 char tag[2]; 2243 2244 /* Setup device pointers. */ 2245 ret = 0; 2246 reg = &ha->iobase->isp82; 2247 cmd = GET_CMD_SP(sp); 2248 req = vha->req; 2249 rsp = ha->rsp_q_map[0]; 2250 2251 /* So we know we haven't pci_map'ed anything yet */ 2252 tot_dsds = 0; 2253 2254 dbval = 0x04 | (ha->portnum << 5); 2255 2256 /* Send marker if required */ 2257 if (vha->marker_needed != 0) { 2258 if (qla2x00_marker(vha, req, 2259 rsp, 0, 0, MK_SYNC_ALL) != QLA_SUCCESS) { 2260 ql_log(ql_log_warn, vha, 0x300c, 2261 "qla2x00_marker failed for cmd=%p.\n", cmd); 2262 return QLA_FUNCTION_FAILED; 2263 } 2264 vha->marker_needed = 0; 2265 } 2266 2267 /* Acquire ring specific lock */ 2268 spin_lock_irqsave(&ha->hardware_lock, flags); 2269 2270 /* Check for room in outstanding command list. */ 2271 handle = req->current_outstanding_cmd; 2272 for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) { 2273 handle++; 2274 if (handle == MAX_OUTSTANDING_COMMANDS) 2275 handle = 1; 2276 if (!req->outstanding_cmds[handle]) 2277 break; 2278 } 2279 if (index == MAX_OUTSTANDING_COMMANDS) 2280 goto queuing_error; 2281 2282 /* Map the sg table so we have an accurate count of sg entries needed */ 2283 if (scsi_sg_count(cmd)) { 2284 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd), 2285 scsi_sg_count(cmd), cmd->sc_data_direction); 2286 if (unlikely(!nseg)) 2287 goto queuing_error; 2288 } else 2289 nseg = 0; 2290 2291 tot_dsds = nseg; 2292 2293 if (tot_dsds > ql2xshiftctondsd) { 2294 struct cmd_type_6 *cmd_pkt; 2295 uint16_t more_dsd_lists = 0; 2296 struct dsd_dma *dsd_ptr; 2297 uint16_t i; 2298 2299 more_dsd_lists = qla24xx_calc_dsd_lists(tot_dsds); 2300 if ((more_dsd_lists + ha->gbl_dsd_inuse) >= NUM_DSD_CHAIN) { 2301 ql_dbg(ql_dbg_io, vha, 0x300d, 2302 "Num of DSD list %d is than %d for cmd=%p.\n", 2303 more_dsd_lists + ha->gbl_dsd_inuse, NUM_DSD_CHAIN, 2304 cmd); 2305 goto queuing_error; 2306 } 2307 2308 if (more_dsd_lists <= ha->gbl_dsd_avail) 2309 goto sufficient_dsds; 2310 else 2311 more_dsd_lists -= ha->gbl_dsd_avail; 2312 2313 for (i = 0; i < more_dsd_lists; i++) { 2314 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC); 2315 if (!dsd_ptr) { 2316 ql_log(ql_log_fatal, vha, 0x300e, 2317 "Failed to allocate memory for dsd_dma " 2318 "for cmd=%p.\n", cmd); 2319 goto queuing_error; 2320 } 2321 2322 dsd_ptr->dsd_addr = dma_pool_alloc(ha->dl_dma_pool, 2323 GFP_ATOMIC, &dsd_ptr->dsd_list_dma); 2324 if (!dsd_ptr->dsd_addr) { 2325 kfree(dsd_ptr); 2326 ql_log(ql_log_fatal, vha, 0x300f, 2327 "Failed to allocate memory for dsd_addr " 2328 "for cmd=%p.\n", cmd); 2329 goto queuing_error; 2330 } 2331 list_add_tail(&dsd_ptr->list, &ha->gbl_dsd_list); 2332 ha->gbl_dsd_avail++; 2333 } 2334 2335 sufficient_dsds: 2336 req_cnt = 1; 2337 2338 if (req->cnt < (req_cnt + 2)) { 2339 cnt = (uint16_t)RD_REG_DWORD_RELAXED( 2340 ®->req_q_out[0]); 2341 if (req->ring_index < cnt) 2342 req->cnt = cnt - req->ring_index; 2343 else 2344 req->cnt = req->length - 2345 (req->ring_index - cnt); 2346 } 2347 2348 if (req->cnt < (req_cnt + 2)) 2349 goto queuing_error; 2350 2351 ctx = sp->u.scmd.ctx = 2352 mempool_alloc(ha->ctx_mempool, GFP_ATOMIC); 2353 if (!ctx) { 2354 ql_log(ql_log_fatal, vha, 0x3010, 2355 "Failed to allocate ctx for cmd=%p.\n", cmd); 2356 goto queuing_error; 2357 } 2358 2359 memset(ctx, 0, sizeof(struct ct6_dsd)); 2360 ctx->fcp_cmnd = dma_pool_alloc(ha->fcp_cmnd_dma_pool, 2361 GFP_ATOMIC, &ctx->fcp_cmnd_dma); 2362 if (!ctx->fcp_cmnd) { 2363 ql_log(ql_log_fatal, vha, 0x3011, 2364 "Failed to allocate fcp_cmnd for cmd=%p.\n", cmd); 2365 goto queuing_error_fcp_cmnd; 2366 } 2367 2368 /* Initialize the DSD list and dma handle */ 2369 INIT_LIST_HEAD(&ctx->dsd_list); 2370 ctx->dsd_use_cnt = 0; 2371 2372 if (cmd->cmd_len > 16) { 2373 additional_cdb_len = cmd->cmd_len - 16; 2374 if ((cmd->cmd_len % 4) != 0) { 2375 /* SCSI command bigger than 16 bytes must be 2376 * multiple of 4 2377 */ 2378 ql_log(ql_log_warn, vha, 0x3012, 2379 "scsi cmd len %d not multiple of 4 " 2380 "for cmd=%p.\n", cmd->cmd_len, cmd); 2381 goto queuing_error_fcp_cmnd; 2382 } 2383 ctx->fcp_cmnd_len = 12 + cmd->cmd_len + 4; 2384 } else { 2385 additional_cdb_len = 0; 2386 ctx->fcp_cmnd_len = 12 + 16 + 4; 2387 } 2388 2389 cmd_pkt = (struct cmd_type_6 *)req->ring_ptr; 2390 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 2391 2392 /* Zero out remaining portion of packet. */ 2393 /* tagged queuing modifier -- default is TSK_SIMPLE (0). */ 2394 clr_ptr = (uint32_t *)cmd_pkt + 2; 2395 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 2396 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 2397 2398 /* Set NPORT-ID and LUN number*/ 2399 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2400 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; 2401 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; 2402 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; 2403 cmd_pkt->vp_index = sp->fcport->vp_idx; 2404 2405 /* Build IOCB segments */ 2406 if (qla24xx_build_scsi_type_6_iocbs(sp, cmd_pkt, tot_dsds)) 2407 goto queuing_error_fcp_cmnd; 2408 2409 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun); 2410 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun)); 2411 2412 /* build FCP_CMND IU */ 2413 memset(ctx->fcp_cmnd, 0, sizeof(struct fcp_cmnd)); 2414 int_to_scsilun(cmd->device->lun, &ctx->fcp_cmnd->lun); 2415 ctx->fcp_cmnd->additional_cdb_len = additional_cdb_len; 2416 2417 if (cmd->sc_data_direction == DMA_TO_DEVICE) 2418 ctx->fcp_cmnd->additional_cdb_len |= 1; 2419 else if (cmd->sc_data_direction == DMA_FROM_DEVICE) 2420 ctx->fcp_cmnd->additional_cdb_len |= 2; 2421 2422 /* 2423 * Update tagged queuing modifier -- default is TSK_SIMPLE (0). 2424 */ 2425 if (scsi_populate_tag_msg(cmd, tag)) { 2426 switch (tag[0]) { 2427 case HEAD_OF_QUEUE_TAG: 2428 ctx->fcp_cmnd->task_attribute = 2429 TSK_HEAD_OF_QUEUE; 2430 break; 2431 case ORDERED_QUEUE_TAG: 2432 ctx->fcp_cmnd->task_attribute = 2433 TSK_ORDERED; 2434 break; 2435 } 2436 } 2437 2438 /* Populate the FCP_PRIO. */ 2439 if (ha->flags.fcp_prio_enabled) 2440 ctx->fcp_cmnd->task_attribute |= 2441 sp->fcport->fcp_prio << 3; 2442 2443 memcpy(ctx->fcp_cmnd->cdb, cmd->cmnd, cmd->cmd_len); 2444 2445 fcp_dl = (uint32_t *)(ctx->fcp_cmnd->cdb + 16 + 2446 additional_cdb_len); 2447 *fcp_dl = htonl((uint32_t)scsi_bufflen(cmd)); 2448 2449 cmd_pkt->fcp_cmnd_dseg_len = cpu_to_le16(ctx->fcp_cmnd_len); 2450 cmd_pkt->fcp_cmnd_dseg_address[0] = 2451 cpu_to_le32(LSD(ctx->fcp_cmnd_dma)); 2452 cmd_pkt->fcp_cmnd_dseg_address[1] = 2453 cpu_to_le32(MSD(ctx->fcp_cmnd_dma)); 2454 2455 sp->flags |= SRB_FCP_CMND_DMA_VALID; 2456 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); 2457 /* Set total data segment count. */ 2458 cmd_pkt->entry_count = (uint8_t)req_cnt; 2459 /* Specify response queue number where 2460 * completion should happen 2461 */ 2462 cmd_pkt->entry_status = (uint8_t) rsp->id; 2463 } else { 2464 struct cmd_type_7 *cmd_pkt; 2465 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds); 2466 if (req->cnt < (req_cnt + 2)) { 2467 cnt = (uint16_t)RD_REG_DWORD_RELAXED( 2468 ®->req_q_out[0]); 2469 if (req->ring_index < cnt) 2470 req->cnt = cnt - req->ring_index; 2471 else 2472 req->cnt = req->length - 2473 (req->ring_index - cnt); 2474 } 2475 if (req->cnt < (req_cnt + 2)) 2476 goto queuing_error; 2477 2478 cmd_pkt = (struct cmd_type_7 *)req->ring_ptr; 2479 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 2480 2481 /* Zero out remaining portion of packet. */ 2482 /* tagged queuing modifier -- default is TSK_SIMPLE (0).*/ 2483 clr_ptr = (uint32_t *)cmd_pkt + 2; 2484 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 2485 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 2486 2487 /* Set NPORT-ID and LUN number*/ 2488 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2489 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; 2490 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; 2491 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; 2492 cmd_pkt->vp_index = sp->fcport->vp_idx; 2493 2494 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun); 2495 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, 2496 sizeof(cmd_pkt->lun)); 2497 2498 /* 2499 * Update tagged queuing modifier -- default is TSK_SIMPLE (0). 2500 */ 2501 if (scsi_populate_tag_msg(cmd, tag)) { 2502 switch (tag[0]) { 2503 case HEAD_OF_QUEUE_TAG: 2504 cmd_pkt->task = TSK_HEAD_OF_QUEUE; 2505 break; 2506 case ORDERED_QUEUE_TAG: 2507 cmd_pkt->task = TSK_ORDERED; 2508 break; 2509 } 2510 } 2511 2512 /* Populate the FCP_PRIO. */ 2513 if (ha->flags.fcp_prio_enabled) 2514 cmd_pkt->task |= sp->fcport->fcp_prio << 3; 2515 2516 /* Load SCSI command packet. */ 2517 memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len); 2518 host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb)); 2519 2520 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); 2521 2522 /* Build IOCB segments */ 2523 qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds); 2524 2525 /* Set total data segment count. */ 2526 cmd_pkt->entry_count = (uint8_t)req_cnt; 2527 /* Specify response queue number where 2528 * completion should happen. 2529 */ 2530 cmd_pkt->entry_status = (uint8_t) rsp->id; 2531 2532 } 2533 /* Build command packet. */ 2534 req->current_outstanding_cmd = handle; 2535 req->outstanding_cmds[handle] = sp; 2536 sp->handle = handle; 2537 cmd->host_scribble = (unsigned char *)(unsigned long)handle; 2538 req->cnt -= req_cnt; 2539 wmb(); 2540 2541 /* Adjust ring index. */ 2542 req->ring_index++; 2543 if (req->ring_index == req->length) { 2544 req->ring_index = 0; 2545 req->ring_ptr = req->ring; 2546 } else 2547 req->ring_ptr++; 2548 2549 sp->flags |= SRB_DMA_VALID; 2550 2551 /* Set chip new ring index. */ 2552 /* write, read and verify logic */ 2553 dbval = dbval | (req->id << 8) | (req->ring_index << 16); 2554 if (ql2xdbwr) 2555 qla82xx_wr_32(ha, ha->nxdb_wr_ptr, dbval); 2556 else { 2557 WRT_REG_DWORD( 2558 (unsigned long __iomem *)ha->nxdb_wr_ptr, 2559 dbval); 2560 wmb(); 2561 while (RD_REG_DWORD(ha->nxdb_rd_ptr) != dbval) { 2562 WRT_REG_DWORD( 2563 (unsigned long __iomem *)ha->nxdb_wr_ptr, 2564 dbval); 2565 wmb(); 2566 } 2567 } 2568 2569 /* Manage unprocessed RIO/ZIO commands in response queue. */ 2570 if (vha->flags.process_response_queue && 2571 rsp->ring_ptr->signature != RESPONSE_PROCESSED) 2572 qla24xx_process_response_queue(vha, rsp); 2573 2574 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2575 return QLA_SUCCESS; 2576 2577 queuing_error_fcp_cmnd: 2578 dma_pool_free(ha->fcp_cmnd_dma_pool, ctx->fcp_cmnd, ctx->fcp_cmnd_dma); 2579 queuing_error: 2580 if (tot_dsds) 2581 scsi_dma_unmap(cmd); 2582 2583 if (sp->u.scmd.ctx) { 2584 mempool_free(sp->u.scmd.ctx, ha->ctx_mempool); 2585 sp->u.scmd.ctx = NULL; 2586 } 2587 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2588 2589 return QLA_FUNCTION_FAILED; 2590 } 2591 2592 int 2593 qla2x00_start_sp(srb_t *sp) 2594 { 2595 int rval; 2596 struct qla_hw_data *ha = sp->fcport->vha->hw; 2597 void *pkt; 2598 unsigned long flags; 2599 2600 rval = QLA_FUNCTION_FAILED; 2601 spin_lock_irqsave(&ha->hardware_lock, flags); 2602 pkt = qla2x00_alloc_iocbs(sp->fcport->vha, sp); 2603 if (!pkt) { 2604 ql_log(ql_log_warn, sp->fcport->vha, 0x700c, 2605 "qla2x00_alloc_iocbs failed.\n"); 2606 goto done; 2607 } 2608 2609 rval = QLA_SUCCESS; 2610 switch (sp->type) { 2611 case SRB_LOGIN_CMD: 2612 IS_FWI2_CAPABLE(ha) ? 2613 qla24xx_login_iocb(sp, pkt) : 2614 qla2x00_login_iocb(sp, pkt); 2615 break; 2616 case SRB_LOGOUT_CMD: 2617 IS_FWI2_CAPABLE(ha) ? 2618 qla24xx_logout_iocb(sp, pkt) : 2619 qla2x00_logout_iocb(sp, pkt); 2620 break; 2621 case SRB_ELS_CMD_RPT: 2622 case SRB_ELS_CMD_HST: 2623 qla24xx_els_iocb(sp, pkt); 2624 break; 2625 case SRB_CT_CMD: 2626 IS_FWI2_CAPABLE(ha) ? 2627 qla24xx_ct_iocb(sp, pkt) : 2628 qla2x00_ct_iocb(sp, pkt); 2629 break; 2630 case SRB_ADISC_CMD: 2631 IS_FWI2_CAPABLE(ha) ? 2632 qla24xx_adisc_iocb(sp, pkt) : 2633 qla2x00_adisc_iocb(sp, pkt); 2634 break; 2635 case SRB_TM_CMD: 2636 qla24xx_tm_iocb(sp, pkt); 2637 break; 2638 default: 2639 break; 2640 } 2641 2642 wmb(); 2643 qla2x00_start_iocbs(sp->fcport->vha, ha->req_q_map[0]); 2644 done: 2645 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2646 return rval; 2647 } 2648