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 #include "qla_target.h" 9 10 #include <linux/blkdev.h> 11 #include <linux/delay.h> 12 13 #include <scsi/scsi_tcq.h> 14 15 static void qla25xx_set_que(srb_t *, struct rsp_que **); 16 /** 17 * qla2x00_get_cmd_direction() - Determine control_flag data direction. 18 * @cmd: SCSI command 19 * 20 * Returns the proper CF_* direction based on CDB. 21 */ 22 static inline uint16_t 23 qla2x00_get_cmd_direction(srb_t *sp) 24 { 25 uint16_t cflags; 26 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 27 struct scsi_qla_host *vha = sp->fcport->vha; 28 29 cflags = 0; 30 31 /* Set transfer direction */ 32 if (cmd->sc_data_direction == DMA_TO_DEVICE) { 33 cflags = CF_WRITE; 34 vha->qla_stats.output_bytes += scsi_bufflen(cmd); 35 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) { 36 cflags = CF_READ; 37 vha->qla_stats.input_bytes += 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 /* If still no head room then bail out */ 389 if (req->cnt < (req_cnt + 2)) 390 goto queuing_error; 391 } 392 393 /* Build command packet */ 394 req->current_outstanding_cmd = handle; 395 req->outstanding_cmds[handle] = sp; 396 sp->handle = handle; 397 cmd->host_scribble = (unsigned char *)(unsigned long)handle; 398 req->cnt -= req_cnt; 399 400 cmd_pkt = (cmd_entry_t *)req->ring_ptr; 401 cmd_pkt->handle = handle; 402 /* Zero out remaining portion of packet. */ 403 clr_ptr = (uint32_t *)cmd_pkt + 2; 404 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 405 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 406 407 /* Set target ID and LUN number*/ 408 SET_TARGET_ID(ha, cmd_pkt->target, sp->fcport->loop_id); 409 cmd_pkt->lun = cpu_to_le16(cmd->device->lun); 410 411 /* Update tagged queuing modifier */ 412 if (scsi_populate_tag_msg(cmd, tag)) { 413 switch (tag[0]) { 414 case HEAD_OF_QUEUE_TAG: 415 cmd_pkt->control_flags = 416 __constant_cpu_to_le16(CF_HEAD_TAG); 417 break; 418 case ORDERED_QUEUE_TAG: 419 cmd_pkt->control_flags = 420 __constant_cpu_to_le16(CF_ORDERED_TAG); 421 break; 422 default: 423 cmd_pkt->control_flags = 424 __constant_cpu_to_le16(CF_SIMPLE_TAG); 425 break; 426 } 427 } 428 429 /* Load SCSI command packet. */ 430 memcpy(cmd_pkt->scsi_cdb, cmd->cmnd, cmd->cmd_len); 431 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); 432 433 /* Build IOCB segments */ 434 ha->isp_ops->build_iocbs(sp, cmd_pkt, tot_dsds); 435 436 /* Set total data segment count. */ 437 cmd_pkt->entry_count = (uint8_t)req_cnt; 438 wmb(); 439 440 /* Adjust ring index. */ 441 req->ring_index++; 442 if (req->ring_index == req->length) { 443 req->ring_index = 0; 444 req->ring_ptr = req->ring; 445 } else 446 req->ring_ptr++; 447 448 sp->flags |= SRB_DMA_VALID; 449 450 /* Set chip new ring index. */ 451 WRT_REG_WORD(ISP_REQ_Q_IN(ha, reg), req->ring_index); 452 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, reg)); /* PCI Posting. */ 453 454 /* Manage unprocessed RIO/ZIO commands in response queue. */ 455 if (vha->flags.process_response_queue && 456 rsp->ring_ptr->signature != RESPONSE_PROCESSED) 457 qla2x00_process_response_queue(rsp); 458 459 spin_unlock_irqrestore(&ha->hardware_lock, flags); 460 return (QLA_SUCCESS); 461 462 queuing_error: 463 if (tot_dsds) 464 scsi_dma_unmap(cmd); 465 466 spin_unlock_irqrestore(&ha->hardware_lock, flags); 467 468 return (QLA_FUNCTION_FAILED); 469 } 470 471 /** 472 * qla2x00_start_iocbs() - Execute the IOCB command 473 */ 474 void 475 qla2x00_start_iocbs(struct scsi_qla_host *vha, struct req_que *req) 476 { 477 struct qla_hw_data *ha = vha->hw; 478 device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id); 479 480 if (IS_QLA82XX(ha)) { 481 qla82xx_start_iocbs(vha); 482 } else { 483 /* Adjust ring index. */ 484 req->ring_index++; 485 if (req->ring_index == req->length) { 486 req->ring_index = 0; 487 req->ring_ptr = req->ring; 488 } else 489 req->ring_ptr++; 490 491 /* Set chip new ring index. */ 492 if (ha->mqenable || IS_QLA83XX(ha)) { 493 WRT_REG_DWORD(req->req_q_in, req->ring_index); 494 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr); 495 } else if (IS_FWI2_CAPABLE(ha)) { 496 WRT_REG_DWORD(®->isp24.req_q_in, req->ring_index); 497 RD_REG_DWORD_RELAXED(®->isp24.req_q_in); 498 } else { 499 WRT_REG_WORD(ISP_REQ_Q_IN(ha, ®->isp), 500 req->ring_index); 501 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, ®->isp)); 502 } 503 } 504 } 505 506 /** 507 * qla2x00_marker() - Send a marker IOCB to the firmware. 508 * @ha: HA context 509 * @loop_id: loop ID 510 * @lun: LUN 511 * @type: marker modifier 512 * 513 * Can be called from both normal and interrupt context. 514 * 515 * Returns non-zero if a failure occurred, else zero. 516 */ 517 static int 518 __qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req, 519 struct rsp_que *rsp, uint16_t loop_id, 520 uint16_t lun, uint8_t type) 521 { 522 mrk_entry_t *mrk; 523 struct mrk_entry_24xx *mrk24; 524 struct qla_hw_data *ha = vha->hw; 525 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 526 527 mrk24 = NULL; 528 req = ha->req_q_map[0]; 529 mrk = (mrk_entry_t *)qla2x00_alloc_iocbs(vha, 0); 530 if (mrk == NULL) { 531 ql_log(ql_log_warn, base_vha, 0x3026, 532 "Failed to allocate Marker IOCB.\n"); 533 534 return (QLA_FUNCTION_FAILED); 535 } 536 537 mrk->entry_type = MARKER_TYPE; 538 mrk->modifier = type; 539 if (type != MK_SYNC_ALL) { 540 if (IS_FWI2_CAPABLE(ha)) { 541 mrk24 = (struct mrk_entry_24xx *) mrk; 542 mrk24->nport_handle = cpu_to_le16(loop_id); 543 mrk24->lun[1] = LSB(lun); 544 mrk24->lun[2] = MSB(lun); 545 host_to_fcp_swap(mrk24->lun, sizeof(mrk24->lun)); 546 mrk24->vp_index = vha->vp_idx; 547 mrk24->handle = MAKE_HANDLE(req->id, mrk24->handle); 548 } else { 549 SET_TARGET_ID(ha, mrk->target, loop_id); 550 mrk->lun = cpu_to_le16(lun); 551 } 552 } 553 wmb(); 554 555 qla2x00_start_iocbs(vha, req); 556 557 return (QLA_SUCCESS); 558 } 559 560 int 561 qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req, 562 struct rsp_que *rsp, uint16_t loop_id, uint16_t lun, 563 uint8_t type) 564 { 565 int ret; 566 unsigned long flags = 0; 567 568 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 569 ret = __qla2x00_marker(vha, req, rsp, loop_id, lun, type); 570 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 571 572 return (ret); 573 } 574 575 /* 576 * qla2x00_issue_marker 577 * 578 * Issue marker 579 * Caller CAN have hardware lock held as specified by ha_locked parameter. 580 * Might release it, then reaquire. 581 */ 582 int qla2x00_issue_marker(scsi_qla_host_t *vha, int ha_locked) 583 { 584 if (ha_locked) { 585 if (__qla2x00_marker(vha, vha->req, vha->req->rsp, 0, 0, 586 MK_SYNC_ALL) != QLA_SUCCESS) 587 return QLA_FUNCTION_FAILED; 588 } else { 589 if (qla2x00_marker(vha, vha->req, vha->req->rsp, 0, 0, 590 MK_SYNC_ALL) != QLA_SUCCESS) 591 return QLA_FUNCTION_FAILED; 592 } 593 vha->marker_needed = 0; 594 595 return QLA_SUCCESS; 596 } 597 598 /** 599 * qla24xx_calc_iocbs() - Determine number of Command Type 3 and 600 * Continuation Type 1 IOCBs to allocate. 601 * 602 * @dsds: number of data segment decriptors needed 603 * 604 * Returns the number of IOCB entries needed to store @dsds. 605 */ 606 inline uint16_t 607 qla24xx_calc_iocbs(scsi_qla_host_t *vha, uint16_t dsds) 608 { 609 uint16_t iocbs; 610 611 iocbs = 1; 612 if (dsds > 1) { 613 iocbs += (dsds - 1) / 5; 614 if ((dsds - 1) % 5) 615 iocbs++; 616 } 617 return iocbs; 618 } 619 620 static inline int 621 qla24xx_build_scsi_type_6_iocbs(srb_t *sp, struct cmd_type_6 *cmd_pkt, 622 uint16_t tot_dsds) 623 { 624 uint32_t *cur_dsd = NULL; 625 scsi_qla_host_t *vha; 626 struct qla_hw_data *ha; 627 struct scsi_cmnd *cmd; 628 struct scatterlist *cur_seg; 629 uint32_t *dsd_seg; 630 void *next_dsd; 631 uint8_t avail_dsds; 632 uint8_t first_iocb = 1; 633 uint32_t dsd_list_len; 634 struct dsd_dma *dsd_ptr; 635 struct ct6_dsd *ctx; 636 637 cmd = GET_CMD_SP(sp); 638 639 /* Update entry type to indicate Command Type 3 IOCB */ 640 *((uint32_t *)(&cmd_pkt->entry_type)) = 641 __constant_cpu_to_le32(COMMAND_TYPE_6); 642 643 /* No data transfer */ 644 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) { 645 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 646 return 0; 647 } 648 649 vha = sp->fcport->vha; 650 ha = vha->hw; 651 652 /* Set transfer direction */ 653 if (cmd->sc_data_direction == DMA_TO_DEVICE) { 654 cmd_pkt->control_flags = 655 __constant_cpu_to_le16(CF_WRITE_DATA); 656 vha->qla_stats.output_bytes += scsi_bufflen(cmd); 657 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) { 658 cmd_pkt->control_flags = 659 __constant_cpu_to_le16(CF_READ_DATA); 660 vha->qla_stats.input_bytes += scsi_bufflen(cmd); 661 } 662 663 cur_seg = scsi_sglist(cmd); 664 ctx = GET_CMD_CTX_SP(sp); 665 666 while (tot_dsds) { 667 avail_dsds = (tot_dsds > QLA_DSDS_PER_IOCB) ? 668 QLA_DSDS_PER_IOCB : tot_dsds; 669 tot_dsds -= avail_dsds; 670 dsd_list_len = (avail_dsds + 1) * QLA_DSD_SIZE; 671 672 dsd_ptr = list_first_entry(&ha->gbl_dsd_list, 673 struct dsd_dma, list); 674 next_dsd = dsd_ptr->dsd_addr; 675 list_del(&dsd_ptr->list); 676 ha->gbl_dsd_avail--; 677 list_add_tail(&dsd_ptr->list, &ctx->dsd_list); 678 ctx->dsd_use_cnt++; 679 ha->gbl_dsd_inuse++; 680 681 if (first_iocb) { 682 first_iocb = 0; 683 dsd_seg = (uint32_t *)&cmd_pkt->fcp_data_dseg_address; 684 *dsd_seg++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 685 *dsd_seg++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 686 cmd_pkt->fcp_data_dseg_len = cpu_to_le32(dsd_list_len); 687 } else { 688 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 689 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 690 *cur_dsd++ = cpu_to_le32(dsd_list_len); 691 } 692 cur_dsd = (uint32_t *)next_dsd; 693 while (avail_dsds) { 694 dma_addr_t sle_dma; 695 696 sle_dma = sg_dma_address(cur_seg); 697 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 698 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 699 *cur_dsd++ = cpu_to_le32(sg_dma_len(cur_seg)); 700 cur_seg = sg_next(cur_seg); 701 avail_dsds--; 702 } 703 } 704 705 /* Null termination */ 706 *cur_dsd++ = 0; 707 *cur_dsd++ = 0; 708 *cur_dsd++ = 0; 709 cmd_pkt->control_flags |= CF_DATA_SEG_DESCR_ENABLE; 710 return 0; 711 } 712 713 /* 714 * qla24xx_calc_dsd_lists() - Determine number of DSD list required 715 * for Command Type 6. 716 * 717 * @dsds: number of data segment decriptors needed 718 * 719 * Returns the number of dsd list needed to store @dsds. 720 */ 721 inline uint16_t 722 qla24xx_calc_dsd_lists(uint16_t dsds) 723 { 724 uint16_t dsd_lists = 0; 725 726 dsd_lists = (dsds/QLA_DSDS_PER_IOCB); 727 if (dsds % QLA_DSDS_PER_IOCB) 728 dsd_lists++; 729 return dsd_lists; 730 } 731 732 733 /** 734 * qla24xx_build_scsi_iocbs() - Build IOCB command utilizing Command Type 7 735 * IOCB types. 736 * 737 * @sp: SRB command to process 738 * @cmd_pkt: Command type 3 IOCB 739 * @tot_dsds: Total number of segments to transfer 740 */ 741 inline void 742 qla24xx_build_scsi_iocbs(srb_t *sp, struct cmd_type_7 *cmd_pkt, 743 uint16_t tot_dsds) 744 { 745 uint16_t avail_dsds; 746 uint32_t *cur_dsd; 747 scsi_qla_host_t *vha; 748 struct scsi_cmnd *cmd; 749 struct scatterlist *sg; 750 int i; 751 struct req_que *req; 752 753 cmd = GET_CMD_SP(sp); 754 755 /* Update entry type to indicate Command Type 3 IOCB */ 756 *((uint32_t *)(&cmd_pkt->entry_type)) = 757 __constant_cpu_to_le32(COMMAND_TYPE_7); 758 759 /* No data transfer */ 760 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) { 761 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 762 return; 763 } 764 765 vha = sp->fcport->vha; 766 req = vha->req; 767 768 /* Set transfer direction */ 769 if (cmd->sc_data_direction == DMA_TO_DEVICE) { 770 cmd_pkt->task_mgmt_flags = 771 __constant_cpu_to_le16(TMF_WRITE_DATA); 772 vha->qla_stats.output_bytes += scsi_bufflen(cmd); 773 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) { 774 cmd_pkt->task_mgmt_flags = 775 __constant_cpu_to_le16(TMF_READ_DATA); 776 vha->qla_stats.input_bytes += scsi_bufflen(cmd); 777 } 778 779 /* One DSD is available in the Command Type 3 IOCB */ 780 avail_dsds = 1; 781 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address; 782 783 /* Load data segments */ 784 785 scsi_for_each_sg(cmd, sg, tot_dsds, i) { 786 dma_addr_t sle_dma; 787 cont_a64_entry_t *cont_pkt; 788 789 /* Allocate additional continuation packets? */ 790 if (avail_dsds == 0) { 791 /* 792 * Five DSDs are available in the Continuation 793 * Type 1 IOCB. 794 */ 795 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req); 796 cur_dsd = (uint32_t *)cont_pkt->dseg_0_address; 797 avail_dsds = 5; 798 } 799 800 sle_dma = sg_dma_address(sg); 801 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 802 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 803 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 804 avail_dsds--; 805 } 806 } 807 808 struct fw_dif_context { 809 uint32_t ref_tag; 810 uint16_t app_tag; 811 uint8_t ref_tag_mask[4]; /* Validation/Replacement Mask*/ 812 uint8_t app_tag_mask[2]; /* Validation/Replacement Mask*/ 813 }; 814 815 /* 816 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command 817 * 818 */ 819 static inline void 820 qla24xx_set_t10dif_tags(srb_t *sp, struct fw_dif_context *pkt, 821 unsigned int protcnt) 822 { 823 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 824 scsi_qla_host_t *vha = shost_priv(cmd->device->host); 825 826 switch (scsi_get_prot_type(cmd)) { 827 case SCSI_PROT_DIF_TYPE0: 828 /* 829 * No check for ql2xenablehba_err_chk, as it would be an 830 * I/O error if hba tag generation is not done. 831 */ 832 pkt->ref_tag = cpu_to_le32((uint32_t) 833 (0xffffffff & scsi_get_lba(cmd))); 834 835 if (!qla2x00_hba_err_chk_enabled(sp)) 836 break; 837 838 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 /* 845 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to 846 * match LBA in CDB + N 847 */ 848 case SCSI_PROT_DIF_TYPE2: 849 pkt->app_tag = __constant_cpu_to_le16(0); 850 pkt->app_tag_mask[0] = 0x0; 851 pkt->app_tag_mask[1] = 0x0; 852 853 pkt->ref_tag = cpu_to_le32((uint32_t) 854 (0xffffffff & scsi_get_lba(cmd))); 855 856 if (!qla2x00_hba_err_chk_enabled(sp)) 857 break; 858 859 /* enable ALL bytes of the ref tag */ 860 pkt->ref_tag_mask[0] = 0xff; 861 pkt->ref_tag_mask[1] = 0xff; 862 pkt->ref_tag_mask[2] = 0xff; 863 pkt->ref_tag_mask[3] = 0xff; 864 break; 865 866 /* For Type 3 protection: 16 bit GUARD only */ 867 case SCSI_PROT_DIF_TYPE3: 868 pkt->ref_tag_mask[0] = pkt->ref_tag_mask[1] = 869 pkt->ref_tag_mask[2] = pkt->ref_tag_mask[3] = 870 0x00; 871 break; 872 873 /* 874 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and 875 * 16 bit app tag. 876 */ 877 case SCSI_PROT_DIF_TYPE1: 878 pkt->ref_tag = cpu_to_le32((uint32_t) 879 (0xffffffff & scsi_get_lba(cmd))); 880 pkt->app_tag = __constant_cpu_to_le16(0); 881 pkt->app_tag_mask[0] = 0x0; 882 pkt->app_tag_mask[1] = 0x0; 883 884 if (!qla2x00_hba_err_chk_enabled(sp)) 885 break; 886 887 /* enable ALL bytes of the ref tag */ 888 pkt->ref_tag_mask[0] = 0xff; 889 pkt->ref_tag_mask[1] = 0xff; 890 pkt->ref_tag_mask[2] = 0xff; 891 pkt->ref_tag_mask[3] = 0xff; 892 break; 893 } 894 895 ql_dbg(ql_dbg_io, vha, 0x3009, 896 "Setting protection Tags: (BIG) ref tag = 0x%x, app tag = 0x%x, " 897 "prot SG count %d, cmd lba 0x%x, prot_type=%u cmd=%p.\n", 898 pkt->ref_tag, pkt->app_tag, protcnt, (int)scsi_get_lba(cmd), 899 scsi_get_prot_type(cmd), cmd); 900 } 901 902 struct qla2_sgx { 903 dma_addr_t dma_addr; /* OUT */ 904 uint32_t dma_len; /* OUT */ 905 906 uint32_t tot_bytes; /* IN */ 907 struct scatterlist *cur_sg; /* IN */ 908 909 /* for book keeping, bzero on initial invocation */ 910 uint32_t bytes_consumed; 911 uint32_t num_bytes; 912 uint32_t tot_partial; 913 914 /* for debugging */ 915 uint32_t num_sg; 916 srb_t *sp; 917 }; 918 919 static int 920 qla24xx_get_one_block_sg(uint32_t blk_sz, struct qla2_sgx *sgx, 921 uint32_t *partial) 922 { 923 struct scatterlist *sg; 924 uint32_t cumulative_partial, sg_len; 925 dma_addr_t sg_dma_addr; 926 927 if (sgx->num_bytes == sgx->tot_bytes) 928 return 0; 929 930 sg = sgx->cur_sg; 931 cumulative_partial = sgx->tot_partial; 932 933 sg_dma_addr = sg_dma_address(sg); 934 sg_len = sg_dma_len(sg); 935 936 sgx->dma_addr = sg_dma_addr + sgx->bytes_consumed; 937 938 if ((cumulative_partial + (sg_len - sgx->bytes_consumed)) >= blk_sz) { 939 sgx->dma_len = (blk_sz - cumulative_partial); 940 sgx->tot_partial = 0; 941 sgx->num_bytes += blk_sz; 942 *partial = 0; 943 } else { 944 sgx->dma_len = sg_len - sgx->bytes_consumed; 945 sgx->tot_partial += sgx->dma_len; 946 *partial = 1; 947 } 948 949 sgx->bytes_consumed += sgx->dma_len; 950 951 if (sg_len == sgx->bytes_consumed) { 952 sg = sg_next(sg); 953 sgx->num_sg++; 954 sgx->cur_sg = sg; 955 sgx->bytes_consumed = 0; 956 } 957 958 return 1; 959 } 960 961 static int 962 qla24xx_walk_and_build_sglist_no_difb(struct qla_hw_data *ha, srb_t *sp, 963 uint32_t *dsd, uint16_t tot_dsds) 964 { 965 void *next_dsd; 966 uint8_t avail_dsds = 0; 967 uint32_t dsd_list_len; 968 struct dsd_dma *dsd_ptr; 969 struct scatterlist *sg_prot; 970 uint32_t *cur_dsd = dsd; 971 uint16_t used_dsds = tot_dsds; 972 973 uint32_t prot_int; 974 uint32_t partial; 975 struct qla2_sgx sgx; 976 dma_addr_t sle_dma; 977 uint32_t sle_dma_len, tot_prot_dma_len = 0; 978 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 979 980 prot_int = cmd->device->sector_size; 981 982 memset(&sgx, 0, sizeof(struct qla2_sgx)); 983 sgx.tot_bytes = scsi_bufflen(cmd); 984 sgx.cur_sg = scsi_sglist(cmd); 985 sgx.sp = sp; 986 987 sg_prot = scsi_prot_sglist(cmd); 988 989 while (qla24xx_get_one_block_sg(prot_int, &sgx, &partial)) { 990 991 sle_dma = sgx.dma_addr; 992 sle_dma_len = sgx.dma_len; 993 alloc_and_fill: 994 /* Allocate additional continuation packets? */ 995 if (avail_dsds == 0) { 996 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ? 997 QLA_DSDS_PER_IOCB : used_dsds; 998 dsd_list_len = (avail_dsds + 1) * 12; 999 used_dsds -= avail_dsds; 1000 1001 /* allocate tracking DS */ 1002 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC); 1003 if (!dsd_ptr) 1004 return 1; 1005 1006 /* allocate new list */ 1007 dsd_ptr->dsd_addr = next_dsd = 1008 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, 1009 &dsd_ptr->dsd_list_dma); 1010 1011 if (!next_dsd) { 1012 /* 1013 * Need to cleanup only this dsd_ptr, rest 1014 * will be done by sp_free_dma() 1015 */ 1016 kfree(dsd_ptr); 1017 return 1; 1018 } 1019 1020 list_add_tail(&dsd_ptr->list, 1021 &((struct crc_context *)sp->u.scmd.ctx)->dsd_list); 1022 1023 sp->flags |= SRB_CRC_CTX_DSD_VALID; 1024 1025 /* add new list to cmd iocb or last list */ 1026 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 1027 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 1028 *cur_dsd++ = dsd_list_len; 1029 cur_dsd = (uint32_t *)next_dsd; 1030 } 1031 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 1032 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 1033 *cur_dsd++ = cpu_to_le32(sle_dma_len); 1034 avail_dsds--; 1035 1036 if (partial == 0) { 1037 /* Got a full protection interval */ 1038 sle_dma = sg_dma_address(sg_prot) + tot_prot_dma_len; 1039 sle_dma_len = 8; 1040 1041 tot_prot_dma_len += sle_dma_len; 1042 if (tot_prot_dma_len == sg_dma_len(sg_prot)) { 1043 tot_prot_dma_len = 0; 1044 sg_prot = sg_next(sg_prot); 1045 } 1046 1047 partial = 1; /* So as to not re-enter this block */ 1048 goto alloc_and_fill; 1049 } 1050 } 1051 /* Null termination */ 1052 *cur_dsd++ = 0; 1053 *cur_dsd++ = 0; 1054 *cur_dsd++ = 0; 1055 return 0; 1056 } 1057 1058 static int 1059 qla24xx_walk_and_build_sglist(struct qla_hw_data *ha, srb_t *sp, uint32_t *dsd, 1060 uint16_t tot_dsds) 1061 { 1062 void *next_dsd; 1063 uint8_t avail_dsds = 0; 1064 uint32_t dsd_list_len; 1065 struct dsd_dma *dsd_ptr; 1066 struct scatterlist *sg; 1067 uint32_t *cur_dsd = dsd; 1068 int i; 1069 uint16_t used_dsds = tot_dsds; 1070 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 1071 scsi_qla_host_t *vha = shost_priv(cmd->device->host); 1072 1073 uint8_t *cp; 1074 1075 scsi_for_each_sg(cmd, sg, tot_dsds, i) { 1076 dma_addr_t sle_dma; 1077 1078 /* Allocate additional continuation packets? */ 1079 if (avail_dsds == 0) { 1080 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ? 1081 QLA_DSDS_PER_IOCB : used_dsds; 1082 dsd_list_len = (avail_dsds + 1) * 12; 1083 used_dsds -= avail_dsds; 1084 1085 /* allocate tracking DS */ 1086 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC); 1087 if (!dsd_ptr) 1088 return 1; 1089 1090 /* allocate new list */ 1091 dsd_ptr->dsd_addr = next_dsd = 1092 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, 1093 &dsd_ptr->dsd_list_dma); 1094 1095 if (!next_dsd) { 1096 /* 1097 * Need to cleanup only this dsd_ptr, rest 1098 * will be done by sp_free_dma() 1099 */ 1100 kfree(dsd_ptr); 1101 return 1; 1102 } 1103 1104 list_add_tail(&dsd_ptr->list, 1105 &((struct crc_context *)sp->u.scmd.ctx)->dsd_list); 1106 1107 sp->flags |= SRB_CRC_CTX_DSD_VALID; 1108 1109 /* add new list to cmd iocb or last list */ 1110 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 1111 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 1112 *cur_dsd++ = dsd_list_len; 1113 cur_dsd = (uint32_t *)next_dsd; 1114 } 1115 sle_dma = sg_dma_address(sg); 1116 ql_dbg(ql_dbg_io, vha, 0x300a, 1117 "sg entry %d - addr=0x%x 0x%x, " "len=%d for cmd=%p.\n", 1118 i, LSD(sle_dma), MSD(sle_dma), sg_dma_len(sg), cmd); 1119 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 1120 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 1121 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 1122 avail_dsds--; 1123 1124 if (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_PASS) { 1125 cp = page_address(sg_page(sg)) + sg->offset; 1126 ql_dbg(ql_dbg_io, vha, 0x300b, 1127 "User data buffer=%p for cmd=%p.\n", cp, cmd); 1128 } 1129 } 1130 /* Null termination */ 1131 *cur_dsd++ = 0; 1132 *cur_dsd++ = 0; 1133 *cur_dsd++ = 0; 1134 return 0; 1135 } 1136 1137 static int 1138 qla24xx_walk_and_build_prot_sglist(struct qla_hw_data *ha, srb_t *sp, 1139 uint32_t *dsd, 1140 uint16_t tot_dsds) 1141 { 1142 void *next_dsd; 1143 uint8_t avail_dsds = 0; 1144 uint32_t dsd_list_len; 1145 struct dsd_dma *dsd_ptr; 1146 struct scatterlist *sg; 1147 int i; 1148 struct scsi_cmnd *cmd; 1149 uint32_t *cur_dsd = dsd; 1150 uint16_t used_dsds = tot_dsds; 1151 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1152 uint8_t *cp; 1153 1154 cmd = GET_CMD_SP(sp); 1155 scsi_for_each_prot_sg(cmd, sg, tot_dsds, i) { 1156 dma_addr_t sle_dma; 1157 1158 /* Allocate additional continuation packets? */ 1159 if (avail_dsds == 0) { 1160 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ? 1161 QLA_DSDS_PER_IOCB : used_dsds; 1162 dsd_list_len = (avail_dsds + 1) * 12; 1163 used_dsds -= avail_dsds; 1164 1165 /* allocate tracking DS */ 1166 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC); 1167 if (!dsd_ptr) 1168 return 1; 1169 1170 /* allocate new list */ 1171 dsd_ptr->dsd_addr = next_dsd = 1172 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, 1173 &dsd_ptr->dsd_list_dma); 1174 1175 if (!next_dsd) { 1176 /* 1177 * Need to cleanup only this dsd_ptr, rest 1178 * will be done by sp_free_dma() 1179 */ 1180 kfree(dsd_ptr); 1181 return 1; 1182 } 1183 1184 list_add_tail(&dsd_ptr->list, 1185 &((struct crc_context *)sp->u.scmd.ctx)->dsd_list); 1186 1187 sp->flags |= SRB_CRC_CTX_DSD_VALID; 1188 1189 /* add new list to cmd iocb or last list */ 1190 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 1191 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 1192 *cur_dsd++ = dsd_list_len; 1193 cur_dsd = (uint32_t *)next_dsd; 1194 } 1195 sle_dma = sg_dma_address(sg); 1196 if (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_PASS) { 1197 ql_dbg(ql_dbg_io, vha, 0x3027, 1198 "%s(): %p, sg_entry %d - " 1199 "addr=0x%x0x%x, len=%d.\n", 1200 __func__, cur_dsd, i, 1201 LSD(sle_dma), MSD(sle_dma), sg_dma_len(sg)); 1202 } 1203 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 1204 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 1205 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 1206 1207 if (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_PASS) { 1208 cp = page_address(sg_page(sg)) + sg->offset; 1209 ql_dbg(ql_dbg_io, vha, 0x3028, 1210 "%s(): Protection Data buffer = %p.\n", __func__, 1211 cp); 1212 } 1213 avail_dsds--; 1214 } 1215 /* Null termination */ 1216 *cur_dsd++ = 0; 1217 *cur_dsd++ = 0; 1218 *cur_dsd++ = 0; 1219 return 0; 1220 } 1221 1222 /** 1223 * qla24xx_build_scsi_crc_2_iocbs() - Build IOCB command utilizing Command 1224 * Type 6 IOCB types. 1225 * 1226 * @sp: SRB command to process 1227 * @cmd_pkt: Command type 3 IOCB 1228 * @tot_dsds: Total number of segments to transfer 1229 */ 1230 static inline int 1231 qla24xx_build_scsi_crc_2_iocbs(srb_t *sp, struct cmd_type_crc_2 *cmd_pkt, 1232 uint16_t tot_dsds, uint16_t tot_prot_dsds, uint16_t fw_prot_opts) 1233 { 1234 uint32_t *cur_dsd, *fcp_dl; 1235 scsi_qla_host_t *vha; 1236 struct scsi_cmnd *cmd; 1237 struct scatterlist *cur_seg; 1238 int sgc; 1239 uint32_t total_bytes = 0; 1240 uint32_t data_bytes; 1241 uint32_t dif_bytes; 1242 uint8_t bundling = 1; 1243 uint16_t blk_size; 1244 uint8_t *clr_ptr; 1245 struct crc_context *crc_ctx_pkt = NULL; 1246 struct qla_hw_data *ha; 1247 uint8_t additional_fcpcdb_len; 1248 uint16_t fcp_cmnd_len; 1249 struct fcp_cmnd *fcp_cmnd; 1250 dma_addr_t crc_ctx_dma; 1251 char tag[2]; 1252 1253 cmd = GET_CMD_SP(sp); 1254 1255 sgc = 0; 1256 /* Update entry type to indicate Command Type CRC_2 IOCB */ 1257 *((uint32_t *)(&cmd_pkt->entry_type)) = 1258 __constant_cpu_to_le32(COMMAND_TYPE_CRC_2); 1259 1260 vha = sp->fcport->vha; 1261 ha = vha->hw; 1262 1263 /* No data transfer */ 1264 data_bytes = scsi_bufflen(cmd); 1265 if (!data_bytes || cmd->sc_data_direction == DMA_NONE) { 1266 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 1267 return QLA_SUCCESS; 1268 } 1269 1270 cmd_pkt->vp_index = sp->fcport->vha->vp_idx; 1271 1272 /* Set transfer direction */ 1273 if (cmd->sc_data_direction == DMA_TO_DEVICE) { 1274 cmd_pkt->control_flags = 1275 __constant_cpu_to_le16(CF_WRITE_DATA); 1276 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) { 1277 cmd_pkt->control_flags = 1278 __constant_cpu_to_le16(CF_READ_DATA); 1279 } 1280 1281 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) || 1282 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP) || 1283 (scsi_get_prot_op(cmd) == SCSI_PROT_READ_STRIP) || 1284 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_INSERT)) 1285 bundling = 0; 1286 1287 /* Allocate CRC context from global pool */ 1288 crc_ctx_pkt = sp->u.scmd.ctx = 1289 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 1290 1291 if (!crc_ctx_pkt) 1292 goto crc_queuing_error; 1293 1294 /* Zero out CTX area. */ 1295 clr_ptr = (uint8_t *)crc_ctx_pkt; 1296 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt)); 1297 1298 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 1299 1300 sp->flags |= SRB_CRC_CTX_DMA_VALID; 1301 1302 /* Set handle */ 1303 crc_ctx_pkt->handle = cmd_pkt->handle; 1304 1305 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 1306 1307 qla24xx_set_t10dif_tags(sp, (struct fw_dif_context *) 1308 &crc_ctx_pkt->ref_tag, tot_prot_dsds); 1309 1310 cmd_pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma)); 1311 cmd_pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma)); 1312 cmd_pkt->crc_context_len = CRC_CONTEXT_LEN_FW; 1313 1314 /* Determine SCSI command length -- align to 4 byte boundary */ 1315 if (cmd->cmd_len > 16) { 1316 additional_fcpcdb_len = cmd->cmd_len - 16; 1317 if ((cmd->cmd_len % 4) != 0) { 1318 /* SCSI cmd > 16 bytes must be multiple of 4 */ 1319 goto crc_queuing_error; 1320 } 1321 fcp_cmnd_len = 12 + cmd->cmd_len + 4; 1322 } else { 1323 additional_fcpcdb_len = 0; 1324 fcp_cmnd_len = 12 + 16 + 4; 1325 } 1326 1327 fcp_cmnd = &crc_ctx_pkt->fcp_cmnd; 1328 1329 fcp_cmnd->additional_cdb_len = additional_fcpcdb_len; 1330 if (cmd->sc_data_direction == DMA_TO_DEVICE) 1331 fcp_cmnd->additional_cdb_len |= 1; 1332 else if (cmd->sc_data_direction == DMA_FROM_DEVICE) 1333 fcp_cmnd->additional_cdb_len |= 2; 1334 1335 int_to_scsilun(cmd->device->lun, &fcp_cmnd->lun); 1336 memcpy(fcp_cmnd->cdb, cmd->cmnd, cmd->cmd_len); 1337 cmd_pkt->fcp_cmnd_dseg_len = cpu_to_le16(fcp_cmnd_len); 1338 cmd_pkt->fcp_cmnd_dseg_address[0] = cpu_to_le32( 1339 LSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF)); 1340 cmd_pkt->fcp_cmnd_dseg_address[1] = cpu_to_le32( 1341 MSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF)); 1342 fcp_cmnd->task_management = 0; 1343 1344 /* 1345 * Update tagged queuing modifier if using command tag queuing 1346 */ 1347 if (scsi_populate_tag_msg(cmd, tag)) { 1348 switch (tag[0]) { 1349 case HEAD_OF_QUEUE_TAG: 1350 fcp_cmnd->task_attribute = TSK_HEAD_OF_QUEUE; 1351 break; 1352 case ORDERED_QUEUE_TAG: 1353 fcp_cmnd->task_attribute = TSK_ORDERED; 1354 break; 1355 default: 1356 fcp_cmnd->task_attribute = 0; 1357 break; 1358 } 1359 } else { 1360 fcp_cmnd->task_attribute = 0; 1361 } 1362 1363 cmd_pkt->fcp_rsp_dseg_len = 0; /* Let response come in status iocb */ 1364 1365 /* Compute dif len and adjust data len to incude protection */ 1366 dif_bytes = 0; 1367 blk_size = cmd->device->sector_size; 1368 dif_bytes = (data_bytes / blk_size) * 8; 1369 1370 switch (scsi_get_prot_op(GET_CMD_SP(sp))) { 1371 case SCSI_PROT_READ_INSERT: 1372 case SCSI_PROT_WRITE_STRIP: 1373 total_bytes = data_bytes; 1374 data_bytes += dif_bytes; 1375 break; 1376 1377 case SCSI_PROT_READ_STRIP: 1378 case SCSI_PROT_WRITE_INSERT: 1379 case SCSI_PROT_READ_PASS: 1380 case SCSI_PROT_WRITE_PASS: 1381 total_bytes = data_bytes + dif_bytes; 1382 break; 1383 default: 1384 BUG(); 1385 } 1386 1387 if (!qla2x00_hba_err_chk_enabled(sp)) 1388 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 1389 1390 if (!bundling) { 1391 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address; 1392 } else { 1393 /* 1394 * Configure Bundling if we need to fetch interlaving 1395 * protection PCI accesses 1396 */ 1397 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 1398 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 1399 crc_ctx_pkt->u.bundling.dseg_count = cpu_to_le16(tot_dsds - 1400 tot_prot_dsds); 1401 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address; 1402 } 1403 1404 /* Finish the common fields of CRC pkt */ 1405 crc_ctx_pkt->blk_size = cpu_to_le16(blk_size); 1406 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 1407 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 1408 crc_ctx_pkt->guard_seed = __constant_cpu_to_le16(0); 1409 /* Fibre channel byte count */ 1410 cmd_pkt->byte_count = cpu_to_le32(total_bytes); 1411 fcp_dl = (uint32_t *)(crc_ctx_pkt->fcp_cmnd.cdb + 16 + 1412 additional_fcpcdb_len); 1413 *fcp_dl = htonl(total_bytes); 1414 1415 if (!data_bytes || cmd->sc_data_direction == DMA_NONE) { 1416 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 1417 return QLA_SUCCESS; 1418 } 1419 /* Walks data segments */ 1420 1421 cmd_pkt->control_flags |= 1422 __constant_cpu_to_le16(CF_DATA_SEG_DESCR_ENABLE); 1423 1424 if (!bundling && tot_prot_dsds) { 1425 if (qla24xx_walk_and_build_sglist_no_difb(ha, sp, 1426 cur_dsd, tot_dsds)) 1427 goto crc_queuing_error; 1428 } else if (qla24xx_walk_and_build_sglist(ha, sp, cur_dsd, 1429 (tot_dsds - tot_prot_dsds))) 1430 goto crc_queuing_error; 1431 1432 if (bundling && tot_prot_dsds) { 1433 /* Walks dif segments */ 1434 cur_seg = scsi_prot_sglist(cmd); 1435 cmd_pkt->control_flags |= 1436 __constant_cpu_to_le16(CF_DIF_SEG_DESCR_ENABLE); 1437 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address; 1438 if (qla24xx_walk_and_build_prot_sglist(ha, sp, cur_dsd, 1439 tot_prot_dsds)) 1440 goto crc_queuing_error; 1441 } 1442 return QLA_SUCCESS; 1443 1444 crc_queuing_error: 1445 /* Cleanup will be performed by the caller */ 1446 1447 return QLA_FUNCTION_FAILED; 1448 } 1449 1450 /** 1451 * qla24xx_start_scsi() - Send a SCSI command to the ISP 1452 * @sp: command to send to the ISP 1453 * 1454 * Returns non-zero if a failure occurred, else zero. 1455 */ 1456 int 1457 qla24xx_start_scsi(srb_t *sp) 1458 { 1459 int ret, nseg; 1460 unsigned long flags; 1461 uint32_t *clr_ptr; 1462 uint32_t index; 1463 uint32_t handle; 1464 struct cmd_type_7 *cmd_pkt; 1465 uint16_t cnt; 1466 uint16_t req_cnt; 1467 uint16_t tot_dsds; 1468 struct req_que *req = NULL; 1469 struct rsp_que *rsp = NULL; 1470 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 1471 struct scsi_qla_host *vha = sp->fcport->vha; 1472 struct qla_hw_data *ha = vha->hw; 1473 char tag[2]; 1474 1475 /* Setup device pointers. */ 1476 ret = 0; 1477 1478 qla25xx_set_que(sp, &rsp); 1479 req = vha->req; 1480 1481 /* So we know we haven't pci_map'ed anything yet */ 1482 tot_dsds = 0; 1483 1484 /* Send marker if required */ 1485 if (vha->marker_needed != 0) { 1486 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) != 1487 QLA_SUCCESS) 1488 return QLA_FUNCTION_FAILED; 1489 vha->marker_needed = 0; 1490 } 1491 1492 /* Acquire ring specific lock */ 1493 spin_lock_irqsave(&ha->hardware_lock, flags); 1494 1495 /* Check for room in outstanding command list. */ 1496 handle = req->current_outstanding_cmd; 1497 for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) { 1498 handle++; 1499 if (handle == MAX_OUTSTANDING_COMMANDS) 1500 handle = 1; 1501 if (!req->outstanding_cmds[handle]) 1502 break; 1503 } 1504 if (index == MAX_OUTSTANDING_COMMANDS) { 1505 goto queuing_error; 1506 } 1507 1508 /* Map the sg table so we have an accurate count of sg entries needed */ 1509 if (scsi_sg_count(cmd)) { 1510 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd), 1511 scsi_sg_count(cmd), cmd->sc_data_direction); 1512 if (unlikely(!nseg)) 1513 goto queuing_error; 1514 } else 1515 nseg = 0; 1516 1517 tot_dsds = nseg; 1518 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds); 1519 if (req->cnt < (req_cnt + 2)) { 1520 cnt = RD_REG_DWORD_RELAXED(req->req_q_out); 1521 1522 if (req->ring_index < cnt) 1523 req->cnt = cnt - req->ring_index; 1524 else 1525 req->cnt = req->length - 1526 (req->ring_index - cnt); 1527 if (req->cnt < (req_cnt + 2)) 1528 goto queuing_error; 1529 } 1530 1531 /* Build command packet. */ 1532 req->current_outstanding_cmd = handle; 1533 req->outstanding_cmds[handle] = sp; 1534 sp->handle = handle; 1535 cmd->host_scribble = (unsigned char *)(unsigned long)handle; 1536 req->cnt -= req_cnt; 1537 1538 cmd_pkt = (struct cmd_type_7 *)req->ring_ptr; 1539 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 1540 1541 /* Zero out remaining portion of packet. */ 1542 /* tagged queuing modifier -- default is TSK_SIMPLE (0). */ 1543 clr_ptr = (uint32_t *)cmd_pkt + 2; 1544 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 1545 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 1546 1547 /* Set NPORT-ID and LUN number*/ 1548 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1549 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; 1550 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; 1551 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; 1552 cmd_pkt->vp_index = sp->fcport->vha->vp_idx; 1553 1554 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun); 1555 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun)); 1556 1557 /* Update tagged queuing modifier -- default is TSK_SIMPLE (0). */ 1558 if (scsi_populate_tag_msg(cmd, tag)) { 1559 switch (tag[0]) { 1560 case HEAD_OF_QUEUE_TAG: 1561 cmd_pkt->task = TSK_HEAD_OF_QUEUE; 1562 break; 1563 case ORDERED_QUEUE_TAG: 1564 cmd_pkt->task = TSK_ORDERED; 1565 break; 1566 } 1567 } 1568 1569 /* Load SCSI command packet. */ 1570 memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len); 1571 host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb)); 1572 1573 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); 1574 1575 /* Build IOCB segments */ 1576 qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds); 1577 1578 /* Set total data segment count. */ 1579 cmd_pkt->entry_count = (uint8_t)req_cnt; 1580 /* Specify response queue number where completion should happen */ 1581 cmd_pkt->entry_status = (uint8_t) rsp->id; 1582 wmb(); 1583 /* Adjust ring index. */ 1584 req->ring_index++; 1585 if (req->ring_index == req->length) { 1586 req->ring_index = 0; 1587 req->ring_ptr = req->ring; 1588 } else 1589 req->ring_ptr++; 1590 1591 sp->flags |= SRB_DMA_VALID; 1592 1593 /* Set chip new ring index. */ 1594 WRT_REG_DWORD(req->req_q_in, req->ring_index); 1595 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr); 1596 1597 /* Manage unprocessed RIO/ZIO commands in response queue. */ 1598 if (vha->flags.process_response_queue && 1599 rsp->ring_ptr->signature != RESPONSE_PROCESSED) 1600 qla24xx_process_response_queue(vha, rsp); 1601 1602 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1603 return QLA_SUCCESS; 1604 1605 queuing_error: 1606 if (tot_dsds) 1607 scsi_dma_unmap(cmd); 1608 1609 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1610 1611 return QLA_FUNCTION_FAILED; 1612 } 1613 1614 1615 /** 1616 * qla24xx_dif_start_scsi() - Send a SCSI command to the ISP 1617 * @sp: command to send to the ISP 1618 * 1619 * Returns non-zero if a failure occurred, else zero. 1620 */ 1621 int 1622 qla24xx_dif_start_scsi(srb_t *sp) 1623 { 1624 int nseg; 1625 unsigned long flags; 1626 uint32_t *clr_ptr; 1627 uint32_t index; 1628 uint32_t handle; 1629 uint16_t cnt; 1630 uint16_t req_cnt = 0; 1631 uint16_t tot_dsds; 1632 uint16_t tot_prot_dsds; 1633 uint16_t fw_prot_opts = 0; 1634 struct req_que *req = NULL; 1635 struct rsp_que *rsp = NULL; 1636 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 1637 struct scsi_qla_host *vha = sp->fcport->vha; 1638 struct qla_hw_data *ha = vha->hw; 1639 struct cmd_type_crc_2 *cmd_pkt; 1640 uint32_t status = 0; 1641 1642 #define QDSS_GOT_Q_SPACE BIT_0 1643 1644 /* Only process protection or >16 cdb in this routine */ 1645 if (scsi_get_prot_op(cmd) == SCSI_PROT_NORMAL) { 1646 if (cmd->cmd_len <= 16) 1647 return qla24xx_start_scsi(sp); 1648 } 1649 1650 /* Setup device pointers. */ 1651 1652 qla25xx_set_que(sp, &rsp); 1653 req = vha->req; 1654 1655 /* So we know we haven't pci_map'ed anything yet */ 1656 tot_dsds = 0; 1657 1658 /* Send marker if required */ 1659 if (vha->marker_needed != 0) { 1660 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) != 1661 QLA_SUCCESS) 1662 return QLA_FUNCTION_FAILED; 1663 vha->marker_needed = 0; 1664 } 1665 1666 /* Acquire ring specific lock */ 1667 spin_lock_irqsave(&ha->hardware_lock, flags); 1668 1669 /* Check for room in outstanding command list. */ 1670 handle = req->current_outstanding_cmd; 1671 for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) { 1672 handle++; 1673 if (handle == MAX_OUTSTANDING_COMMANDS) 1674 handle = 1; 1675 if (!req->outstanding_cmds[handle]) 1676 break; 1677 } 1678 1679 if (index == MAX_OUTSTANDING_COMMANDS) 1680 goto queuing_error; 1681 1682 /* Compute number of required data segments */ 1683 /* Map the sg table so we have an accurate count of sg entries needed */ 1684 if (scsi_sg_count(cmd)) { 1685 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd), 1686 scsi_sg_count(cmd), cmd->sc_data_direction); 1687 if (unlikely(!nseg)) 1688 goto queuing_error; 1689 else 1690 sp->flags |= SRB_DMA_VALID; 1691 1692 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) || 1693 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) { 1694 struct qla2_sgx sgx; 1695 uint32_t partial; 1696 1697 memset(&sgx, 0, sizeof(struct qla2_sgx)); 1698 sgx.tot_bytes = scsi_bufflen(cmd); 1699 sgx.cur_sg = scsi_sglist(cmd); 1700 sgx.sp = sp; 1701 1702 nseg = 0; 1703 while (qla24xx_get_one_block_sg( 1704 cmd->device->sector_size, &sgx, &partial)) 1705 nseg++; 1706 } 1707 } else 1708 nseg = 0; 1709 1710 /* number of required data segments */ 1711 tot_dsds = nseg; 1712 1713 /* Compute number of required protection segments */ 1714 if (qla24xx_configure_prot_mode(sp, &fw_prot_opts)) { 1715 nseg = dma_map_sg(&ha->pdev->dev, scsi_prot_sglist(cmd), 1716 scsi_prot_sg_count(cmd), cmd->sc_data_direction); 1717 if (unlikely(!nseg)) 1718 goto queuing_error; 1719 else 1720 sp->flags |= SRB_CRC_PROT_DMA_VALID; 1721 1722 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) || 1723 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) { 1724 nseg = scsi_bufflen(cmd) / cmd->device->sector_size; 1725 } 1726 } else { 1727 nseg = 0; 1728 } 1729 1730 req_cnt = 1; 1731 /* Total Data and protection sg segment(s) */ 1732 tot_prot_dsds = nseg; 1733 tot_dsds += nseg; 1734 if (req->cnt < (req_cnt + 2)) { 1735 cnt = RD_REG_DWORD_RELAXED(req->req_q_out); 1736 1737 if (req->ring_index < cnt) 1738 req->cnt = cnt - req->ring_index; 1739 else 1740 req->cnt = req->length - 1741 (req->ring_index - cnt); 1742 if (req->cnt < (req_cnt + 2)) 1743 goto queuing_error; 1744 } 1745 1746 status |= QDSS_GOT_Q_SPACE; 1747 1748 /* Build header part of command packet (excluding the OPCODE). */ 1749 req->current_outstanding_cmd = handle; 1750 req->outstanding_cmds[handle] = sp; 1751 sp->handle = handle; 1752 cmd->host_scribble = (unsigned char *)(unsigned long)handle; 1753 req->cnt -= req_cnt; 1754 1755 /* Fill-in common area */ 1756 cmd_pkt = (struct cmd_type_crc_2 *)req->ring_ptr; 1757 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 1758 1759 clr_ptr = (uint32_t *)cmd_pkt + 2; 1760 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 1761 1762 /* Set NPORT-ID and LUN number*/ 1763 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1764 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; 1765 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; 1766 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; 1767 1768 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun); 1769 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun)); 1770 1771 /* Total Data and protection segment(s) */ 1772 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 1773 1774 /* Build IOCB segments and adjust for data protection segments */ 1775 if (qla24xx_build_scsi_crc_2_iocbs(sp, (struct cmd_type_crc_2 *) 1776 req->ring_ptr, tot_dsds, tot_prot_dsds, fw_prot_opts) != 1777 QLA_SUCCESS) 1778 goto queuing_error; 1779 1780 cmd_pkt->entry_count = (uint8_t)req_cnt; 1781 /* Specify response queue number where completion should happen */ 1782 cmd_pkt->entry_status = (uint8_t) rsp->id; 1783 cmd_pkt->timeout = __constant_cpu_to_le16(0); 1784 wmb(); 1785 1786 /* Adjust ring index. */ 1787 req->ring_index++; 1788 if (req->ring_index == req->length) { 1789 req->ring_index = 0; 1790 req->ring_ptr = req->ring; 1791 } else 1792 req->ring_ptr++; 1793 1794 /* Set chip new ring index. */ 1795 WRT_REG_DWORD(req->req_q_in, req->ring_index); 1796 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr); 1797 1798 /* Manage unprocessed RIO/ZIO commands in response queue. */ 1799 if (vha->flags.process_response_queue && 1800 rsp->ring_ptr->signature != RESPONSE_PROCESSED) 1801 qla24xx_process_response_queue(vha, rsp); 1802 1803 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1804 1805 return QLA_SUCCESS; 1806 1807 queuing_error: 1808 if (status & QDSS_GOT_Q_SPACE) { 1809 req->outstanding_cmds[handle] = NULL; 1810 req->cnt += req_cnt; 1811 } 1812 /* Cleanup will be performed by the caller (queuecommand) */ 1813 1814 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1815 return QLA_FUNCTION_FAILED; 1816 } 1817 1818 1819 static void qla25xx_set_que(srb_t *sp, struct rsp_que **rsp) 1820 { 1821 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 1822 struct qla_hw_data *ha = sp->fcport->vha->hw; 1823 int affinity = cmd->request->cpu; 1824 1825 if (ha->flags.cpu_affinity_enabled && affinity >= 0 && 1826 affinity < ha->max_rsp_queues - 1) 1827 *rsp = ha->rsp_q_map[affinity + 1]; 1828 else 1829 *rsp = ha->rsp_q_map[0]; 1830 } 1831 1832 /* Generic Control-SRB manipulation functions. */ 1833 void * 1834 qla2x00_alloc_iocbs(scsi_qla_host_t *vha, srb_t *sp) 1835 { 1836 struct qla_hw_data *ha = vha->hw; 1837 struct req_que *req = ha->req_q_map[0]; 1838 device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id); 1839 uint32_t index, handle; 1840 request_t *pkt; 1841 uint16_t cnt, req_cnt; 1842 1843 pkt = NULL; 1844 req_cnt = 1; 1845 handle = 0; 1846 1847 if (!sp) 1848 goto skip_cmd_array; 1849 1850 /* Check for room in outstanding command list. */ 1851 handle = req->current_outstanding_cmd; 1852 for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) { 1853 handle++; 1854 if (handle == MAX_OUTSTANDING_COMMANDS) 1855 handle = 1; 1856 if (!req->outstanding_cmds[handle]) 1857 break; 1858 } 1859 if (index == MAX_OUTSTANDING_COMMANDS) { 1860 ql_log(ql_log_warn, vha, 0x700b, 1861 "No room on oustanding cmd array.\n"); 1862 goto queuing_error; 1863 } 1864 1865 /* Prep command array. */ 1866 req->current_outstanding_cmd = handle; 1867 req->outstanding_cmds[handle] = sp; 1868 sp->handle = handle; 1869 1870 /* Adjust entry-counts as needed. */ 1871 if (sp->type != SRB_SCSI_CMD) 1872 req_cnt = sp->iocbs; 1873 1874 skip_cmd_array: 1875 /* Check for room on request queue. */ 1876 if (req->cnt < req_cnt) { 1877 if (ha->mqenable || IS_QLA83XX(ha)) 1878 cnt = RD_REG_DWORD(®->isp25mq.req_q_out); 1879 else if (IS_QLA82XX(ha)) 1880 cnt = RD_REG_DWORD(®->isp82.req_q_out); 1881 else if (IS_FWI2_CAPABLE(ha)) 1882 cnt = RD_REG_DWORD(®->isp24.req_q_out); 1883 else 1884 cnt = qla2x00_debounce_register( 1885 ISP_REQ_Q_OUT(ha, ®->isp)); 1886 1887 if (req->ring_index < cnt) 1888 req->cnt = cnt - req->ring_index; 1889 else 1890 req->cnt = req->length - 1891 (req->ring_index - cnt); 1892 } 1893 if (req->cnt < req_cnt) 1894 goto queuing_error; 1895 1896 /* Prep packet */ 1897 req->cnt -= req_cnt; 1898 pkt = req->ring_ptr; 1899 memset(pkt, 0, REQUEST_ENTRY_SIZE); 1900 pkt->entry_count = req_cnt; 1901 pkt->handle = handle; 1902 1903 queuing_error: 1904 return pkt; 1905 } 1906 1907 static void 1908 qla24xx_login_iocb(srb_t *sp, struct logio_entry_24xx *logio) 1909 { 1910 struct srb_iocb *lio = &sp->u.iocb_cmd; 1911 1912 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; 1913 logio->control_flags = cpu_to_le16(LCF_COMMAND_PLOGI); 1914 if (lio->u.logio.flags & SRB_LOGIN_COND_PLOGI) 1915 logio->control_flags |= cpu_to_le16(LCF_COND_PLOGI); 1916 if (lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI) 1917 logio->control_flags |= cpu_to_le16(LCF_SKIP_PRLI); 1918 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1919 logio->port_id[0] = sp->fcport->d_id.b.al_pa; 1920 logio->port_id[1] = sp->fcport->d_id.b.area; 1921 logio->port_id[2] = sp->fcport->d_id.b.domain; 1922 logio->vp_index = sp->fcport->vha->vp_idx; 1923 } 1924 1925 static void 1926 qla2x00_login_iocb(srb_t *sp, struct mbx_entry *mbx) 1927 { 1928 struct qla_hw_data *ha = sp->fcport->vha->hw; 1929 struct srb_iocb *lio = &sp->u.iocb_cmd; 1930 uint16_t opts; 1931 1932 mbx->entry_type = MBX_IOCB_TYPE; 1933 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id); 1934 mbx->mb0 = cpu_to_le16(MBC_LOGIN_FABRIC_PORT); 1935 opts = lio->u.logio.flags & SRB_LOGIN_COND_PLOGI ? BIT_0 : 0; 1936 opts |= lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI ? BIT_1 : 0; 1937 if (HAS_EXTENDED_IDS(ha)) { 1938 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id); 1939 mbx->mb10 = cpu_to_le16(opts); 1940 } else { 1941 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | opts); 1942 } 1943 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain); 1944 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 | 1945 sp->fcport->d_id.b.al_pa); 1946 mbx->mb9 = cpu_to_le16(sp->fcport->vha->vp_idx); 1947 } 1948 1949 static void 1950 qla24xx_logout_iocb(srb_t *sp, struct logio_entry_24xx *logio) 1951 { 1952 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; 1953 logio->control_flags = 1954 cpu_to_le16(LCF_COMMAND_LOGO|LCF_IMPL_LOGO); 1955 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1956 logio->port_id[0] = sp->fcport->d_id.b.al_pa; 1957 logio->port_id[1] = sp->fcport->d_id.b.area; 1958 logio->port_id[2] = sp->fcport->d_id.b.domain; 1959 logio->vp_index = sp->fcport->vha->vp_idx; 1960 } 1961 1962 static void 1963 qla2x00_logout_iocb(srb_t *sp, struct mbx_entry *mbx) 1964 { 1965 struct qla_hw_data *ha = sp->fcport->vha->hw; 1966 1967 mbx->entry_type = MBX_IOCB_TYPE; 1968 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id); 1969 mbx->mb0 = cpu_to_le16(MBC_LOGOUT_FABRIC_PORT); 1970 mbx->mb1 = HAS_EXTENDED_IDS(ha) ? 1971 cpu_to_le16(sp->fcport->loop_id): 1972 cpu_to_le16(sp->fcport->loop_id << 8); 1973 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain); 1974 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 | 1975 sp->fcport->d_id.b.al_pa); 1976 mbx->mb9 = cpu_to_le16(sp->fcport->vha->vp_idx); 1977 /* Implicit: mbx->mbx10 = 0. */ 1978 } 1979 1980 static void 1981 qla24xx_adisc_iocb(srb_t *sp, struct logio_entry_24xx *logio) 1982 { 1983 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; 1984 logio->control_flags = cpu_to_le16(LCF_COMMAND_ADISC); 1985 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1986 logio->vp_index = sp->fcport->vha->vp_idx; 1987 } 1988 1989 static void 1990 qla2x00_adisc_iocb(srb_t *sp, struct mbx_entry *mbx) 1991 { 1992 struct qla_hw_data *ha = sp->fcport->vha->hw; 1993 1994 mbx->entry_type = MBX_IOCB_TYPE; 1995 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id); 1996 mbx->mb0 = cpu_to_le16(MBC_GET_PORT_DATABASE); 1997 if (HAS_EXTENDED_IDS(ha)) { 1998 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id); 1999 mbx->mb10 = cpu_to_le16(BIT_0); 2000 } else { 2001 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | BIT_0); 2002 } 2003 mbx->mb2 = cpu_to_le16(MSW(ha->async_pd_dma)); 2004 mbx->mb3 = cpu_to_le16(LSW(ha->async_pd_dma)); 2005 mbx->mb6 = cpu_to_le16(MSW(MSD(ha->async_pd_dma))); 2006 mbx->mb7 = cpu_to_le16(LSW(MSD(ha->async_pd_dma))); 2007 mbx->mb9 = cpu_to_le16(sp->fcport->vha->vp_idx); 2008 } 2009 2010 static void 2011 qla24xx_tm_iocb(srb_t *sp, struct tsk_mgmt_entry *tsk) 2012 { 2013 uint32_t flags; 2014 unsigned int lun; 2015 struct fc_port *fcport = sp->fcport; 2016 scsi_qla_host_t *vha = fcport->vha; 2017 struct qla_hw_data *ha = vha->hw; 2018 struct srb_iocb *iocb = &sp->u.iocb_cmd; 2019 struct req_que *req = vha->req; 2020 2021 flags = iocb->u.tmf.flags; 2022 lun = iocb->u.tmf.lun; 2023 2024 tsk->entry_type = TSK_MGMT_IOCB_TYPE; 2025 tsk->entry_count = 1; 2026 tsk->handle = MAKE_HANDLE(req->id, tsk->handle); 2027 tsk->nport_handle = cpu_to_le16(fcport->loop_id); 2028 tsk->timeout = cpu_to_le16(ha->r_a_tov / 10 * 2); 2029 tsk->control_flags = cpu_to_le32(flags); 2030 tsk->port_id[0] = fcport->d_id.b.al_pa; 2031 tsk->port_id[1] = fcport->d_id.b.area; 2032 tsk->port_id[2] = fcport->d_id.b.domain; 2033 tsk->vp_index = fcport->vha->vp_idx; 2034 2035 if (flags == TCF_LUN_RESET) { 2036 int_to_scsilun(lun, &tsk->lun); 2037 host_to_fcp_swap((uint8_t *)&tsk->lun, 2038 sizeof(tsk->lun)); 2039 } 2040 } 2041 2042 static void 2043 qla24xx_els_iocb(srb_t *sp, struct els_entry_24xx *els_iocb) 2044 { 2045 struct fc_bsg_job *bsg_job = sp->u.bsg_job; 2046 2047 els_iocb->entry_type = ELS_IOCB_TYPE; 2048 els_iocb->entry_count = 1; 2049 els_iocb->sys_define = 0; 2050 els_iocb->entry_status = 0; 2051 els_iocb->handle = sp->handle; 2052 els_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2053 els_iocb->tx_dsd_count = __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt); 2054 els_iocb->vp_index = sp->fcport->vha->vp_idx; 2055 els_iocb->sof_type = EST_SOFI3; 2056 els_iocb->rx_dsd_count = __constant_cpu_to_le16(bsg_job->reply_payload.sg_cnt); 2057 2058 els_iocb->opcode = 2059 sp->type == SRB_ELS_CMD_RPT ? 2060 bsg_job->request->rqst_data.r_els.els_code : 2061 bsg_job->request->rqst_data.h_els.command_code; 2062 els_iocb->port_id[0] = sp->fcport->d_id.b.al_pa; 2063 els_iocb->port_id[1] = sp->fcport->d_id.b.area; 2064 els_iocb->port_id[2] = sp->fcport->d_id.b.domain; 2065 els_iocb->control_flags = 0; 2066 els_iocb->rx_byte_count = 2067 cpu_to_le32(bsg_job->reply_payload.payload_len); 2068 els_iocb->tx_byte_count = 2069 cpu_to_le32(bsg_job->request_payload.payload_len); 2070 2071 els_iocb->tx_address[0] = cpu_to_le32(LSD(sg_dma_address 2072 (bsg_job->request_payload.sg_list))); 2073 els_iocb->tx_address[1] = cpu_to_le32(MSD(sg_dma_address 2074 (bsg_job->request_payload.sg_list))); 2075 els_iocb->tx_len = cpu_to_le32(sg_dma_len 2076 (bsg_job->request_payload.sg_list)); 2077 2078 els_iocb->rx_address[0] = cpu_to_le32(LSD(sg_dma_address 2079 (bsg_job->reply_payload.sg_list))); 2080 els_iocb->rx_address[1] = cpu_to_le32(MSD(sg_dma_address 2081 (bsg_job->reply_payload.sg_list))); 2082 els_iocb->rx_len = cpu_to_le32(sg_dma_len 2083 (bsg_job->reply_payload.sg_list)); 2084 } 2085 2086 static void 2087 qla2x00_ct_iocb(srb_t *sp, ms_iocb_entry_t *ct_iocb) 2088 { 2089 uint16_t avail_dsds; 2090 uint32_t *cur_dsd; 2091 struct scatterlist *sg; 2092 int index; 2093 uint16_t tot_dsds; 2094 scsi_qla_host_t *vha = sp->fcport->vha; 2095 struct qla_hw_data *ha = vha->hw; 2096 struct fc_bsg_job *bsg_job = sp->u.bsg_job; 2097 int loop_iterartion = 0; 2098 int cont_iocb_prsnt = 0; 2099 int entry_count = 1; 2100 2101 memset(ct_iocb, 0, sizeof(ms_iocb_entry_t)); 2102 ct_iocb->entry_type = CT_IOCB_TYPE; 2103 ct_iocb->entry_status = 0; 2104 ct_iocb->handle1 = sp->handle; 2105 SET_TARGET_ID(ha, ct_iocb->loop_id, sp->fcport->loop_id); 2106 ct_iocb->status = __constant_cpu_to_le16(0); 2107 ct_iocb->control_flags = __constant_cpu_to_le16(0); 2108 ct_iocb->timeout = 0; 2109 ct_iocb->cmd_dsd_count = 2110 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt); 2111 ct_iocb->total_dsd_count = 2112 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt + 1); 2113 ct_iocb->req_bytecount = 2114 cpu_to_le32(bsg_job->request_payload.payload_len); 2115 ct_iocb->rsp_bytecount = 2116 cpu_to_le32(bsg_job->reply_payload.payload_len); 2117 2118 ct_iocb->dseg_req_address[0] = cpu_to_le32(LSD(sg_dma_address 2119 (bsg_job->request_payload.sg_list))); 2120 ct_iocb->dseg_req_address[1] = cpu_to_le32(MSD(sg_dma_address 2121 (bsg_job->request_payload.sg_list))); 2122 ct_iocb->dseg_req_length = ct_iocb->req_bytecount; 2123 2124 ct_iocb->dseg_rsp_address[0] = cpu_to_le32(LSD(sg_dma_address 2125 (bsg_job->reply_payload.sg_list))); 2126 ct_iocb->dseg_rsp_address[1] = cpu_to_le32(MSD(sg_dma_address 2127 (bsg_job->reply_payload.sg_list))); 2128 ct_iocb->dseg_rsp_length = ct_iocb->rsp_bytecount; 2129 2130 avail_dsds = 1; 2131 cur_dsd = (uint32_t *)ct_iocb->dseg_rsp_address; 2132 index = 0; 2133 tot_dsds = bsg_job->reply_payload.sg_cnt; 2134 2135 for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) { 2136 dma_addr_t sle_dma; 2137 cont_a64_entry_t *cont_pkt; 2138 2139 /* Allocate additional continuation packets? */ 2140 if (avail_dsds == 0) { 2141 /* 2142 * Five DSDs are available in the Cont. 2143 * Type 1 IOCB. 2144 */ 2145 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, 2146 vha->hw->req_q_map[0]); 2147 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address; 2148 avail_dsds = 5; 2149 cont_iocb_prsnt = 1; 2150 entry_count++; 2151 } 2152 2153 sle_dma = sg_dma_address(sg); 2154 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 2155 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 2156 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 2157 loop_iterartion++; 2158 avail_dsds--; 2159 } 2160 ct_iocb->entry_count = entry_count; 2161 } 2162 2163 static void 2164 qla24xx_ct_iocb(srb_t *sp, struct ct_entry_24xx *ct_iocb) 2165 { 2166 uint16_t avail_dsds; 2167 uint32_t *cur_dsd; 2168 struct scatterlist *sg; 2169 int index; 2170 uint16_t tot_dsds; 2171 scsi_qla_host_t *vha = sp->fcport->vha; 2172 struct qla_hw_data *ha = vha->hw; 2173 struct fc_bsg_job *bsg_job = sp->u.bsg_job; 2174 int loop_iterartion = 0; 2175 int cont_iocb_prsnt = 0; 2176 int entry_count = 1; 2177 2178 ct_iocb->entry_type = CT_IOCB_TYPE; 2179 ct_iocb->entry_status = 0; 2180 ct_iocb->sys_define = 0; 2181 ct_iocb->handle = sp->handle; 2182 2183 ct_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2184 ct_iocb->vp_index = sp->fcport->vha->vp_idx; 2185 ct_iocb->comp_status = __constant_cpu_to_le16(0); 2186 2187 ct_iocb->cmd_dsd_count = 2188 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt); 2189 ct_iocb->timeout = 0; 2190 ct_iocb->rsp_dsd_count = 2191 __constant_cpu_to_le16(bsg_job->reply_payload.sg_cnt); 2192 ct_iocb->rsp_byte_count = 2193 cpu_to_le32(bsg_job->reply_payload.payload_len); 2194 ct_iocb->cmd_byte_count = 2195 cpu_to_le32(bsg_job->request_payload.payload_len); 2196 ct_iocb->dseg_0_address[0] = cpu_to_le32(LSD(sg_dma_address 2197 (bsg_job->request_payload.sg_list))); 2198 ct_iocb->dseg_0_address[1] = cpu_to_le32(MSD(sg_dma_address 2199 (bsg_job->request_payload.sg_list))); 2200 ct_iocb->dseg_0_len = cpu_to_le32(sg_dma_len 2201 (bsg_job->request_payload.sg_list)); 2202 2203 avail_dsds = 1; 2204 cur_dsd = (uint32_t *)ct_iocb->dseg_1_address; 2205 index = 0; 2206 tot_dsds = bsg_job->reply_payload.sg_cnt; 2207 2208 for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) { 2209 dma_addr_t sle_dma; 2210 cont_a64_entry_t *cont_pkt; 2211 2212 /* Allocate additional continuation packets? */ 2213 if (avail_dsds == 0) { 2214 /* 2215 * Five DSDs are available in the Cont. 2216 * Type 1 IOCB. 2217 */ 2218 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, 2219 ha->req_q_map[0]); 2220 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address; 2221 avail_dsds = 5; 2222 cont_iocb_prsnt = 1; 2223 entry_count++; 2224 } 2225 2226 sle_dma = sg_dma_address(sg); 2227 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 2228 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 2229 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 2230 loop_iterartion++; 2231 avail_dsds--; 2232 } 2233 ct_iocb->entry_count = entry_count; 2234 } 2235 2236 /* 2237 * qla82xx_start_scsi() - Send a SCSI command to the ISP 2238 * @sp: command to send to the ISP 2239 * 2240 * Returns non-zero if a failure occurred, else zero. 2241 */ 2242 int 2243 qla82xx_start_scsi(srb_t *sp) 2244 { 2245 int ret, nseg; 2246 unsigned long flags; 2247 struct scsi_cmnd *cmd; 2248 uint32_t *clr_ptr; 2249 uint32_t index; 2250 uint32_t handle; 2251 uint16_t cnt; 2252 uint16_t req_cnt; 2253 uint16_t tot_dsds; 2254 struct device_reg_82xx __iomem *reg; 2255 uint32_t dbval; 2256 uint32_t *fcp_dl; 2257 uint8_t additional_cdb_len; 2258 struct ct6_dsd *ctx; 2259 struct scsi_qla_host *vha = sp->fcport->vha; 2260 struct qla_hw_data *ha = vha->hw; 2261 struct req_que *req = NULL; 2262 struct rsp_que *rsp = NULL; 2263 char tag[2]; 2264 2265 /* Setup device pointers. */ 2266 ret = 0; 2267 reg = &ha->iobase->isp82; 2268 cmd = GET_CMD_SP(sp); 2269 req = vha->req; 2270 rsp = ha->rsp_q_map[0]; 2271 2272 /* So we know we haven't pci_map'ed anything yet */ 2273 tot_dsds = 0; 2274 2275 dbval = 0x04 | (ha->portnum << 5); 2276 2277 /* Send marker if required */ 2278 if (vha->marker_needed != 0) { 2279 if (qla2x00_marker(vha, req, 2280 rsp, 0, 0, MK_SYNC_ALL) != QLA_SUCCESS) { 2281 ql_log(ql_log_warn, vha, 0x300c, 2282 "qla2x00_marker failed for cmd=%p.\n", cmd); 2283 return QLA_FUNCTION_FAILED; 2284 } 2285 vha->marker_needed = 0; 2286 } 2287 2288 /* Acquire ring specific lock */ 2289 spin_lock_irqsave(&ha->hardware_lock, flags); 2290 2291 /* Check for room in outstanding command list. */ 2292 handle = req->current_outstanding_cmd; 2293 for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) { 2294 handle++; 2295 if (handle == MAX_OUTSTANDING_COMMANDS) 2296 handle = 1; 2297 if (!req->outstanding_cmds[handle]) 2298 break; 2299 } 2300 if (index == MAX_OUTSTANDING_COMMANDS) 2301 goto queuing_error; 2302 2303 /* Map the sg table so we have an accurate count of sg entries needed */ 2304 if (scsi_sg_count(cmd)) { 2305 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd), 2306 scsi_sg_count(cmd), cmd->sc_data_direction); 2307 if (unlikely(!nseg)) 2308 goto queuing_error; 2309 } else 2310 nseg = 0; 2311 2312 tot_dsds = nseg; 2313 2314 if (tot_dsds > ql2xshiftctondsd) { 2315 struct cmd_type_6 *cmd_pkt; 2316 uint16_t more_dsd_lists = 0; 2317 struct dsd_dma *dsd_ptr; 2318 uint16_t i; 2319 2320 more_dsd_lists = qla24xx_calc_dsd_lists(tot_dsds); 2321 if ((more_dsd_lists + ha->gbl_dsd_inuse) >= NUM_DSD_CHAIN) { 2322 ql_dbg(ql_dbg_io, vha, 0x300d, 2323 "Num of DSD list %d is than %d for cmd=%p.\n", 2324 more_dsd_lists + ha->gbl_dsd_inuse, NUM_DSD_CHAIN, 2325 cmd); 2326 goto queuing_error; 2327 } 2328 2329 if (more_dsd_lists <= ha->gbl_dsd_avail) 2330 goto sufficient_dsds; 2331 else 2332 more_dsd_lists -= ha->gbl_dsd_avail; 2333 2334 for (i = 0; i < more_dsd_lists; i++) { 2335 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC); 2336 if (!dsd_ptr) { 2337 ql_log(ql_log_fatal, vha, 0x300e, 2338 "Failed to allocate memory for dsd_dma " 2339 "for cmd=%p.\n", cmd); 2340 goto queuing_error; 2341 } 2342 2343 dsd_ptr->dsd_addr = dma_pool_alloc(ha->dl_dma_pool, 2344 GFP_ATOMIC, &dsd_ptr->dsd_list_dma); 2345 if (!dsd_ptr->dsd_addr) { 2346 kfree(dsd_ptr); 2347 ql_log(ql_log_fatal, vha, 0x300f, 2348 "Failed to allocate memory for dsd_addr " 2349 "for cmd=%p.\n", cmd); 2350 goto queuing_error; 2351 } 2352 list_add_tail(&dsd_ptr->list, &ha->gbl_dsd_list); 2353 ha->gbl_dsd_avail++; 2354 } 2355 2356 sufficient_dsds: 2357 req_cnt = 1; 2358 2359 if (req->cnt < (req_cnt + 2)) { 2360 cnt = (uint16_t)RD_REG_DWORD_RELAXED( 2361 ®->req_q_out[0]); 2362 if (req->ring_index < cnt) 2363 req->cnt = cnt - req->ring_index; 2364 else 2365 req->cnt = req->length - 2366 (req->ring_index - cnt); 2367 if (req->cnt < (req_cnt + 2)) 2368 goto queuing_error; 2369 } 2370 2371 ctx = sp->u.scmd.ctx = 2372 mempool_alloc(ha->ctx_mempool, GFP_ATOMIC); 2373 if (!ctx) { 2374 ql_log(ql_log_fatal, vha, 0x3010, 2375 "Failed to allocate ctx for cmd=%p.\n", cmd); 2376 goto queuing_error; 2377 } 2378 2379 memset(ctx, 0, sizeof(struct ct6_dsd)); 2380 ctx->fcp_cmnd = dma_pool_alloc(ha->fcp_cmnd_dma_pool, 2381 GFP_ATOMIC, &ctx->fcp_cmnd_dma); 2382 if (!ctx->fcp_cmnd) { 2383 ql_log(ql_log_fatal, vha, 0x3011, 2384 "Failed to allocate fcp_cmnd for cmd=%p.\n", cmd); 2385 goto queuing_error; 2386 } 2387 2388 /* Initialize the DSD list and dma handle */ 2389 INIT_LIST_HEAD(&ctx->dsd_list); 2390 ctx->dsd_use_cnt = 0; 2391 2392 if (cmd->cmd_len > 16) { 2393 additional_cdb_len = cmd->cmd_len - 16; 2394 if ((cmd->cmd_len % 4) != 0) { 2395 /* SCSI command bigger than 16 bytes must be 2396 * multiple of 4 2397 */ 2398 ql_log(ql_log_warn, vha, 0x3012, 2399 "scsi cmd len %d not multiple of 4 " 2400 "for cmd=%p.\n", cmd->cmd_len, cmd); 2401 goto queuing_error_fcp_cmnd; 2402 } 2403 ctx->fcp_cmnd_len = 12 + cmd->cmd_len + 4; 2404 } else { 2405 additional_cdb_len = 0; 2406 ctx->fcp_cmnd_len = 12 + 16 + 4; 2407 } 2408 2409 cmd_pkt = (struct cmd_type_6 *)req->ring_ptr; 2410 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 2411 2412 /* Zero out remaining portion of packet. */ 2413 /* tagged queuing modifier -- default is TSK_SIMPLE (0). */ 2414 clr_ptr = (uint32_t *)cmd_pkt + 2; 2415 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 2416 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 2417 2418 /* Set NPORT-ID and LUN number*/ 2419 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2420 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; 2421 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; 2422 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; 2423 cmd_pkt->vp_index = sp->fcport->vha->vp_idx; 2424 2425 /* Build IOCB segments */ 2426 if (qla24xx_build_scsi_type_6_iocbs(sp, cmd_pkt, tot_dsds)) 2427 goto queuing_error_fcp_cmnd; 2428 2429 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun); 2430 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun)); 2431 2432 /* build FCP_CMND IU */ 2433 memset(ctx->fcp_cmnd, 0, sizeof(struct fcp_cmnd)); 2434 int_to_scsilun(cmd->device->lun, &ctx->fcp_cmnd->lun); 2435 ctx->fcp_cmnd->additional_cdb_len = additional_cdb_len; 2436 2437 if (cmd->sc_data_direction == DMA_TO_DEVICE) 2438 ctx->fcp_cmnd->additional_cdb_len |= 1; 2439 else if (cmd->sc_data_direction == DMA_FROM_DEVICE) 2440 ctx->fcp_cmnd->additional_cdb_len |= 2; 2441 2442 /* 2443 * Update tagged queuing modifier -- default is TSK_SIMPLE (0). 2444 */ 2445 if (scsi_populate_tag_msg(cmd, tag)) { 2446 switch (tag[0]) { 2447 case HEAD_OF_QUEUE_TAG: 2448 ctx->fcp_cmnd->task_attribute = 2449 TSK_HEAD_OF_QUEUE; 2450 break; 2451 case ORDERED_QUEUE_TAG: 2452 ctx->fcp_cmnd->task_attribute = 2453 TSK_ORDERED; 2454 break; 2455 } 2456 } 2457 2458 /* Populate the FCP_PRIO. */ 2459 if (ha->flags.fcp_prio_enabled) 2460 ctx->fcp_cmnd->task_attribute |= 2461 sp->fcport->fcp_prio << 3; 2462 2463 memcpy(ctx->fcp_cmnd->cdb, cmd->cmnd, cmd->cmd_len); 2464 2465 fcp_dl = (uint32_t *)(ctx->fcp_cmnd->cdb + 16 + 2466 additional_cdb_len); 2467 *fcp_dl = htonl((uint32_t)scsi_bufflen(cmd)); 2468 2469 cmd_pkt->fcp_cmnd_dseg_len = cpu_to_le16(ctx->fcp_cmnd_len); 2470 cmd_pkt->fcp_cmnd_dseg_address[0] = 2471 cpu_to_le32(LSD(ctx->fcp_cmnd_dma)); 2472 cmd_pkt->fcp_cmnd_dseg_address[1] = 2473 cpu_to_le32(MSD(ctx->fcp_cmnd_dma)); 2474 2475 sp->flags |= SRB_FCP_CMND_DMA_VALID; 2476 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); 2477 /* Set total data segment count. */ 2478 cmd_pkt->entry_count = (uint8_t)req_cnt; 2479 /* Specify response queue number where 2480 * completion should happen 2481 */ 2482 cmd_pkt->entry_status = (uint8_t) rsp->id; 2483 } else { 2484 struct cmd_type_7 *cmd_pkt; 2485 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds); 2486 if (req->cnt < (req_cnt + 2)) { 2487 cnt = (uint16_t)RD_REG_DWORD_RELAXED( 2488 ®->req_q_out[0]); 2489 if (req->ring_index < cnt) 2490 req->cnt = cnt - req->ring_index; 2491 else 2492 req->cnt = req->length - 2493 (req->ring_index - cnt); 2494 } 2495 if (req->cnt < (req_cnt + 2)) 2496 goto queuing_error; 2497 2498 cmd_pkt = (struct cmd_type_7 *)req->ring_ptr; 2499 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 2500 2501 /* Zero out remaining portion of packet. */ 2502 /* tagged queuing modifier -- default is TSK_SIMPLE (0).*/ 2503 clr_ptr = (uint32_t *)cmd_pkt + 2; 2504 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 2505 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 2506 2507 /* Set NPORT-ID and LUN number*/ 2508 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2509 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; 2510 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; 2511 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; 2512 cmd_pkt->vp_index = sp->fcport->vha->vp_idx; 2513 2514 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun); 2515 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, 2516 sizeof(cmd_pkt->lun)); 2517 2518 /* 2519 * Update tagged queuing modifier -- default is TSK_SIMPLE (0). 2520 */ 2521 if (scsi_populate_tag_msg(cmd, tag)) { 2522 switch (tag[0]) { 2523 case HEAD_OF_QUEUE_TAG: 2524 cmd_pkt->task = TSK_HEAD_OF_QUEUE; 2525 break; 2526 case ORDERED_QUEUE_TAG: 2527 cmd_pkt->task = TSK_ORDERED; 2528 break; 2529 } 2530 } 2531 2532 /* Populate the FCP_PRIO. */ 2533 if (ha->flags.fcp_prio_enabled) 2534 cmd_pkt->task |= sp->fcport->fcp_prio << 3; 2535 2536 /* Load SCSI command packet. */ 2537 memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len); 2538 host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb)); 2539 2540 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); 2541 2542 /* Build IOCB segments */ 2543 qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds); 2544 2545 /* Set total data segment count. */ 2546 cmd_pkt->entry_count = (uint8_t)req_cnt; 2547 /* Specify response queue number where 2548 * completion should happen. 2549 */ 2550 cmd_pkt->entry_status = (uint8_t) rsp->id; 2551 2552 } 2553 /* Build command packet. */ 2554 req->current_outstanding_cmd = handle; 2555 req->outstanding_cmds[handle] = sp; 2556 sp->handle = handle; 2557 cmd->host_scribble = (unsigned char *)(unsigned long)handle; 2558 req->cnt -= req_cnt; 2559 wmb(); 2560 2561 /* Adjust ring index. */ 2562 req->ring_index++; 2563 if (req->ring_index == req->length) { 2564 req->ring_index = 0; 2565 req->ring_ptr = req->ring; 2566 } else 2567 req->ring_ptr++; 2568 2569 sp->flags |= SRB_DMA_VALID; 2570 2571 /* Set chip new ring index. */ 2572 /* write, read and verify logic */ 2573 dbval = dbval | (req->id << 8) | (req->ring_index << 16); 2574 if (ql2xdbwr) 2575 qla82xx_wr_32(ha, ha->nxdb_wr_ptr, dbval); 2576 else { 2577 WRT_REG_DWORD( 2578 (unsigned long __iomem *)ha->nxdb_wr_ptr, 2579 dbval); 2580 wmb(); 2581 while (RD_REG_DWORD(ha->nxdb_rd_ptr) != dbval) { 2582 WRT_REG_DWORD( 2583 (unsigned long __iomem *)ha->nxdb_wr_ptr, 2584 dbval); 2585 wmb(); 2586 } 2587 } 2588 2589 /* Manage unprocessed RIO/ZIO commands in response queue. */ 2590 if (vha->flags.process_response_queue && 2591 rsp->ring_ptr->signature != RESPONSE_PROCESSED) 2592 qla24xx_process_response_queue(vha, rsp); 2593 2594 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2595 return QLA_SUCCESS; 2596 2597 queuing_error_fcp_cmnd: 2598 dma_pool_free(ha->fcp_cmnd_dma_pool, ctx->fcp_cmnd, ctx->fcp_cmnd_dma); 2599 queuing_error: 2600 if (tot_dsds) 2601 scsi_dma_unmap(cmd); 2602 2603 if (sp->u.scmd.ctx) { 2604 mempool_free(sp->u.scmd.ctx, ha->ctx_mempool); 2605 sp->u.scmd.ctx = NULL; 2606 } 2607 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2608 2609 return QLA_FUNCTION_FAILED; 2610 } 2611 2612 int 2613 qla2x00_start_sp(srb_t *sp) 2614 { 2615 int rval; 2616 struct qla_hw_data *ha = sp->fcport->vha->hw; 2617 void *pkt; 2618 unsigned long flags; 2619 2620 rval = QLA_FUNCTION_FAILED; 2621 spin_lock_irqsave(&ha->hardware_lock, flags); 2622 pkt = qla2x00_alloc_iocbs(sp->fcport->vha, sp); 2623 if (!pkt) { 2624 ql_log(ql_log_warn, sp->fcport->vha, 0x700c, 2625 "qla2x00_alloc_iocbs failed.\n"); 2626 goto done; 2627 } 2628 2629 rval = QLA_SUCCESS; 2630 switch (sp->type) { 2631 case SRB_LOGIN_CMD: 2632 IS_FWI2_CAPABLE(ha) ? 2633 qla24xx_login_iocb(sp, pkt) : 2634 qla2x00_login_iocb(sp, pkt); 2635 break; 2636 case SRB_LOGOUT_CMD: 2637 IS_FWI2_CAPABLE(ha) ? 2638 qla24xx_logout_iocb(sp, pkt) : 2639 qla2x00_logout_iocb(sp, pkt); 2640 break; 2641 case SRB_ELS_CMD_RPT: 2642 case SRB_ELS_CMD_HST: 2643 qla24xx_els_iocb(sp, pkt); 2644 break; 2645 case SRB_CT_CMD: 2646 IS_FWI2_CAPABLE(ha) ? 2647 qla24xx_ct_iocb(sp, pkt) : 2648 qla2x00_ct_iocb(sp, pkt); 2649 break; 2650 case SRB_ADISC_CMD: 2651 IS_FWI2_CAPABLE(ha) ? 2652 qla24xx_adisc_iocb(sp, pkt) : 2653 qla2x00_adisc_iocb(sp, pkt); 2654 break; 2655 case SRB_TM_CMD: 2656 qla24xx_tm_iocb(sp, pkt); 2657 break; 2658 default: 2659 break; 2660 } 2661 2662 wmb(); 2663 qla2x00_start_iocbs(sp->fcport->vha, ha->req_q_map[0]); 2664 done: 2665 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2666 return rval; 2667 } 2668