1 /* 2 * QLogic Fibre Channel HBA Driver 3 * Copyright (c) 2003-2014 QLogic Corporation 4 * 5 * See LICENSE.qla2xxx for copyright and licensing details. 6 */ 7 #include "qla_def.h" 8 #include "qla_target.h" 9 10 #include <linux/blkdev.h> 11 #include <linux/delay.h> 12 13 #include <scsi/scsi_tcq.h> 14 15 static void qla25xx_set_que(srb_t *, struct rsp_que **); 16 /** 17 * qla2x00_get_cmd_direction() - Determine control_flag data direction. 18 * @cmd: SCSI command 19 * 20 * Returns the proper CF_* direction based on CDB. 21 */ 22 static inline uint16_t 23 qla2x00_get_cmd_direction(srb_t *sp) 24 { 25 uint16_t cflags; 26 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 27 struct scsi_qla_host *vha = sp->fcport->vha; 28 29 cflags = 0; 30 31 /* Set transfer direction */ 32 if (cmd->sc_data_direction == DMA_TO_DEVICE) { 33 cflags = CF_WRITE; 34 vha->qla_stats.output_bytes += scsi_bufflen(cmd); 35 vha->qla_stats.output_requests++; 36 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) { 37 cflags = CF_READ; 38 vha->qla_stats.input_bytes += scsi_bufflen(cmd); 39 vha->qla_stats.input_requests++; 40 } 41 return (cflags); 42 } 43 44 /** 45 * qla2x00_calc_iocbs_32() - Determine number of Command Type 2 and 46 * Continuation Type 0 IOCBs to allocate. 47 * 48 * @dsds: number of data segment decriptors needed 49 * 50 * Returns the number of IOCB entries needed to store @dsds. 51 */ 52 uint16_t 53 qla2x00_calc_iocbs_32(uint16_t dsds) 54 { 55 uint16_t iocbs; 56 57 iocbs = 1; 58 if (dsds > 3) { 59 iocbs += (dsds - 3) / 7; 60 if ((dsds - 3) % 7) 61 iocbs++; 62 } 63 return (iocbs); 64 } 65 66 /** 67 * qla2x00_calc_iocbs_64() - Determine number of Command Type 3 and 68 * Continuation Type 1 IOCBs to allocate. 69 * 70 * @dsds: number of data segment decriptors needed 71 * 72 * Returns the number of IOCB entries needed to store @dsds. 73 */ 74 uint16_t 75 qla2x00_calc_iocbs_64(uint16_t dsds) 76 { 77 uint16_t iocbs; 78 79 iocbs = 1; 80 if (dsds > 2) { 81 iocbs += (dsds - 2) / 5; 82 if ((dsds - 2) % 5) 83 iocbs++; 84 } 85 return (iocbs); 86 } 87 88 /** 89 * qla2x00_prep_cont_type0_iocb() - Initialize a Continuation Type 0 IOCB. 90 * @ha: HA context 91 * 92 * Returns a pointer to the Continuation Type 0 IOCB packet. 93 */ 94 static inline cont_entry_t * 95 qla2x00_prep_cont_type0_iocb(struct scsi_qla_host *vha) 96 { 97 cont_entry_t *cont_pkt; 98 struct req_que *req = vha->req; 99 /* Adjust ring index. */ 100 req->ring_index++; 101 if (req->ring_index == req->length) { 102 req->ring_index = 0; 103 req->ring_ptr = req->ring; 104 } else { 105 req->ring_ptr++; 106 } 107 108 cont_pkt = (cont_entry_t *)req->ring_ptr; 109 110 /* Load packet defaults. */ 111 *((uint32_t *)(&cont_pkt->entry_type)) = 112 __constant_cpu_to_le32(CONTINUE_TYPE); 113 114 return (cont_pkt); 115 } 116 117 /** 118 * qla2x00_prep_cont_type1_iocb() - Initialize a Continuation Type 1 IOCB. 119 * @ha: HA context 120 * 121 * Returns a pointer to the continuation type 1 IOCB packet. 122 */ 123 static inline cont_a64_entry_t * 124 qla2x00_prep_cont_type1_iocb(scsi_qla_host_t *vha, struct req_que *req) 125 { 126 cont_a64_entry_t *cont_pkt; 127 128 /* Adjust ring index. */ 129 req->ring_index++; 130 if (req->ring_index == req->length) { 131 req->ring_index = 0; 132 req->ring_ptr = req->ring; 133 } else { 134 req->ring_ptr++; 135 } 136 137 cont_pkt = (cont_a64_entry_t *)req->ring_ptr; 138 139 /* Load packet defaults. */ 140 *((uint32_t *)(&cont_pkt->entry_type)) = IS_QLAFX00(vha->hw) ? 141 __constant_cpu_to_le32(CONTINUE_A64_TYPE_FX00) : 142 __constant_cpu_to_le32(CONTINUE_A64_TYPE); 143 144 return (cont_pkt); 145 } 146 147 static inline int 148 qla24xx_configure_prot_mode(srb_t *sp, uint16_t *fw_prot_opts) 149 { 150 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 151 uint8_t guard = scsi_host_get_guard(cmd->device->host); 152 153 /* We always use DIFF Bundling for best performance */ 154 *fw_prot_opts = 0; 155 156 /* Translate SCSI opcode to a protection opcode */ 157 switch (scsi_get_prot_op(cmd)) { 158 case SCSI_PROT_READ_STRIP: 159 *fw_prot_opts |= PO_MODE_DIF_REMOVE; 160 break; 161 case SCSI_PROT_WRITE_INSERT: 162 *fw_prot_opts |= PO_MODE_DIF_INSERT; 163 break; 164 case SCSI_PROT_READ_INSERT: 165 *fw_prot_opts |= PO_MODE_DIF_INSERT; 166 break; 167 case SCSI_PROT_WRITE_STRIP: 168 *fw_prot_opts |= PO_MODE_DIF_REMOVE; 169 break; 170 case SCSI_PROT_READ_PASS: 171 case SCSI_PROT_WRITE_PASS: 172 if (guard & SHOST_DIX_GUARD_IP) 173 *fw_prot_opts |= PO_MODE_DIF_TCP_CKSUM; 174 else 175 *fw_prot_opts |= PO_MODE_DIF_PASS; 176 break; 177 default: /* Normal Request */ 178 *fw_prot_opts |= PO_MODE_DIF_PASS; 179 break; 180 } 181 182 return scsi_prot_sg_count(cmd); 183 } 184 185 /* 186 * qla2x00_build_scsi_iocbs_32() - Build IOCB command utilizing 32bit 187 * capable IOCB types. 188 * 189 * @sp: SRB command to process 190 * @cmd_pkt: Command type 2 IOCB 191 * @tot_dsds: Total number of segments to transfer 192 */ 193 void qla2x00_build_scsi_iocbs_32(srb_t *sp, cmd_entry_t *cmd_pkt, 194 uint16_t tot_dsds) 195 { 196 uint16_t avail_dsds; 197 uint32_t *cur_dsd; 198 scsi_qla_host_t *vha; 199 struct scsi_cmnd *cmd; 200 struct scatterlist *sg; 201 int i; 202 203 cmd = GET_CMD_SP(sp); 204 205 /* Update entry type to indicate Command Type 2 IOCB */ 206 *((uint32_t *)(&cmd_pkt->entry_type)) = 207 __constant_cpu_to_le32(COMMAND_TYPE); 208 209 /* No data transfer */ 210 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) { 211 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 212 return; 213 } 214 215 vha = sp->fcport->vha; 216 cmd_pkt->control_flags |= cpu_to_le16(qla2x00_get_cmd_direction(sp)); 217 218 /* Three DSDs are available in the Command Type 2 IOCB */ 219 avail_dsds = 3; 220 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address; 221 222 /* Load data segments */ 223 scsi_for_each_sg(cmd, sg, tot_dsds, i) { 224 cont_entry_t *cont_pkt; 225 226 /* Allocate additional continuation packets? */ 227 if (avail_dsds == 0) { 228 /* 229 * Seven DSDs are available in the Continuation 230 * Type 0 IOCB. 231 */ 232 cont_pkt = qla2x00_prep_cont_type0_iocb(vha); 233 cur_dsd = (uint32_t *)&cont_pkt->dseg_0_address; 234 avail_dsds = 7; 235 } 236 237 *cur_dsd++ = cpu_to_le32(sg_dma_address(sg)); 238 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 239 avail_dsds--; 240 } 241 } 242 243 /** 244 * qla2x00_build_scsi_iocbs_64() - Build IOCB command utilizing 64bit 245 * capable IOCB types. 246 * 247 * @sp: SRB command to process 248 * @cmd_pkt: Command type 3 IOCB 249 * @tot_dsds: Total number of segments to transfer 250 */ 251 void qla2x00_build_scsi_iocbs_64(srb_t *sp, cmd_entry_t *cmd_pkt, 252 uint16_t tot_dsds) 253 { 254 uint16_t avail_dsds; 255 uint32_t *cur_dsd; 256 scsi_qla_host_t *vha; 257 struct scsi_cmnd *cmd; 258 struct scatterlist *sg; 259 int i; 260 261 cmd = GET_CMD_SP(sp); 262 263 /* Update entry type to indicate Command Type 3 IOCB */ 264 *((uint32_t *)(&cmd_pkt->entry_type)) = 265 __constant_cpu_to_le32(COMMAND_A64_TYPE); 266 267 /* No data transfer */ 268 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) { 269 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 270 return; 271 } 272 273 vha = sp->fcport->vha; 274 cmd_pkt->control_flags |= cpu_to_le16(qla2x00_get_cmd_direction(sp)); 275 276 /* Two DSDs are available in the Command Type 3 IOCB */ 277 avail_dsds = 2; 278 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address; 279 280 /* Load data segments */ 281 scsi_for_each_sg(cmd, sg, tot_dsds, i) { 282 dma_addr_t sle_dma; 283 cont_a64_entry_t *cont_pkt; 284 285 /* Allocate additional continuation packets? */ 286 if (avail_dsds == 0) { 287 /* 288 * Five DSDs are available in the Continuation 289 * Type 1 IOCB. 290 */ 291 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req); 292 cur_dsd = (uint32_t *)cont_pkt->dseg_0_address; 293 avail_dsds = 5; 294 } 295 296 sle_dma = sg_dma_address(sg); 297 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 298 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 299 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 300 avail_dsds--; 301 } 302 } 303 304 /** 305 * qla2x00_start_scsi() - Send a SCSI command to the ISP 306 * @sp: command to send to the ISP 307 * 308 * Returns non-zero if a failure occurred, else zero. 309 */ 310 int 311 qla2x00_start_scsi(srb_t *sp) 312 { 313 int ret, nseg; 314 unsigned long flags; 315 scsi_qla_host_t *vha; 316 struct scsi_cmnd *cmd; 317 uint32_t *clr_ptr; 318 uint32_t index; 319 uint32_t handle; 320 cmd_entry_t *cmd_pkt; 321 uint16_t cnt; 322 uint16_t req_cnt; 323 uint16_t tot_dsds; 324 struct device_reg_2xxx __iomem *reg; 325 struct qla_hw_data *ha; 326 struct req_que *req; 327 struct rsp_que *rsp; 328 char tag[2]; 329 330 /* Setup device pointers. */ 331 ret = 0; 332 vha = sp->fcport->vha; 333 ha = vha->hw; 334 reg = &ha->iobase->isp; 335 cmd = GET_CMD_SP(sp); 336 req = ha->req_q_map[0]; 337 rsp = ha->rsp_q_map[0]; 338 /* So we know we haven't pci_map'ed anything yet */ 339 tot_dsds = 0; 340 341 /* Send marker if required */ 342 if (vha->marker_needed != 0) { 343 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) != 344 QLA_SUCCESS) { 345 return (QLA_FUNCTION_FAILED); 346 } 347 vha->marker_needed = 0; 348 } 349 350 /* Acquire ring specific lock */ 351 spin_lock_irqsave(&ha->hardware_lock, flags); 352 353 /* Check for room in outstanding command list. */ 354 handle = req->current_outstanding_cmd; 355 for (index = 1; index < req->num_outstanding_cmds; index++) { 356 handle++; 357 if (handle == req->num_outstanding_cmds) 358 handle = 1; 359 if (!req->outstanding_cmds[handle]) 360 break; 361 } 362 if (index == req->num_outstanding_cmds) 363 goto queuing_error; 364 365 /* Map the sg table so we have an accurate count of sg entries needed */ 366 if (scsi_sg_count(cmd)) { 367 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd), 368 scsi_sg_count(cmd), cmd->sc_data_direction); 369 if (unlikely(!nseg)) 370 goto queuing_error; 371 } else 372 nseg = 0; 373 374 tot_dsds = nseg; 375 376 /* Calculate the number of request entries needed. */ 377 req_cnt = ha->isp_ops->calc_req_entries(tot_dsds); 378 if (req->cnt < (req_cnt + 2)) { 379 cnt = RD_REG_WORD_RELAXED(ISP_REQ_Q_OUT(ha, reg)); 380 if (req->ring_index < cnt) 381 req->cnt = cnt - req->ring_index; 382 else 383 req->cnt = req->length - 384 (req->ring_index - cnt); 385 /* If still no head room then bail out */ 386 if (req->cnt < (req_cnt + 2)) 387 goto queuing_error; 388 } 389 390 /* Build command packet */ 391 req->current_outstanding_cmd = handle; 392 req->outstanding_cmds[handle] = sp; 393 sp->handle = handle; 394 cmd->host_scribble = (unsigned char *)(unsigned long)handle; 395 req->cnt -= req_cnt; 396 397 cmd_pkt = (cmd_entry_t *)req->ring_ptr; 398 cmd_pkt->handle = handle; 399 /* Zero out remaining portion of packet. */ 400 clr_ptr = (uint32_t *)cmd_pkt + 2; 401 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 402 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 403 404 /* Set target ID and LUN number*/ 405 SET_TARGET_ID(ha, cmd_pkt->target, sp->fcport->loop_id); 406 cmd_pkt->lun = cpu_to_le16(cmd->device->lun); 407 408 /* Update tagged queuing modifier */ 409 if (scsi_populate_tag_msg(cmd, tag)) { 410 switch (tag[0]) { 411 case HEAD_OF_QUEUE_TAG: 412 cmd_pkt->control_flags = 413 __constant_cpu_to_le16(CF_HEAD_TAG); 414 break; 415 case ORDERED_QUEUE_TAG: 416 cmd_pkt->control_flags = 417 __constant_cpu_to_le16(CF_ORDERED_TAG); 418 break; 419 default: 420 cmd_pkt->control_flags = 421 __constant_cpu_to_le16(CF_SIMPLE_TAG); 422 break; 423 } 424 } else { 425 cmd_pkt->control_flags = __constant_cpu_to_le16(CF_SIMPLE_TAG); 426 } 427 428 /* Load SCSI command packet. */ 429 memcpy(cmd_pkt->scsi_cdb, cmd->cmnd, cmd->cmd_len); 430 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); 431 432 /* Build IOCB segments */ 433 ha->isp_ops->build_iocbs(sp, cmd_pkt, tot_dsds); 434 435 /* Set total data segment count. */ 436 cmd_pkt->entry_count = (uint8_t)req_cnt; 437 wmb(); 438 439 /* Adjust ring index. */ 440 req->ring_index++; 441 if (req->ring_index == req->length) { 442 req->ring_index = 0; 443 req->ring_ptr = req->ring; 444 } else 445 req->ring_ptr++; 446 447 sp->flags |= SRB_DMA_VALID; 448 449 /* Set chip new ring index. */ 450 WRT_REG_WORD(ISP_REQ_Q_IN(ha, reg), req->ring_index); 451 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, reg)); /* PCI Posting. */ 452 453 /* Manage unprocessed RIO/ZIO commands in response queue. */ 454 if (vha->flags.process_response_queue && 455 rsp->ring_ptr->signature != RESPONSE_PROCESSED) 456 qla2x00_process_response_queue(rsp); 457 458 spin_unlock_irqrestore(&ha->hardware_lock, flags); 459 return (QLA_SUCCESS); 460 461 queuing_error: 462 if (tot_dsds) 463 scsi_dma_unmap(cmd); 464 465 spin_unlock_irqrestore(&ha->hardware_lock, flags); 466 467 return (QLA_FUNCTION_FAILED); 468 } 469 470 /** 471 * qla2x00_start_iocbs() - Execute the IOCB command 472 */ 473 void 474 qla2x00_start_iocbs(struct scsi_qla_host *vha, struct req_que *req) 475 { 476 struct qla_hw_data *ha = vha->hw; 477 device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id); 478 479 if (IS_P3P_TYPE(ha)) { 480 qla82xx_start_iocbs(vha); 481 } else { 482 /* Adjust ring index. */ 483 req->ring_index++; 484 if (req->ring_index == req->length) { 485 req->ring_index = 0; 486 req->ring_ptr = req->ring; 487 } else 488 req->ring_ptr++; 489 490 /* Set chip new ring index. */ 491 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) { 492 WRT_REG_DWORD(req->req_q_in, req->ring_index); 493 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr); 494 } else if (IS_QLAFX00(ha)) { 495 WRT_REG_DWORD(®->ispfx00.req_q_in, req->ring_index); 496 RD_REG_DWORD_RELAXED(®->ispfx00.req_q_in); 497 QLAFX00_SET_HST_INTR(ha, ha->rqstq_intr_code); 498 } else if (IS_FWI2_CAPABLE(ha)) { 499 WRT_REG_DWORD(®->isp24.req_q_in, req->ring_index); 500 RD_REG_DWORD_RELAXED(®->isp24.req_q_in); 501 } else { 502 WRT_REG_WORD(ISP_REQ_Q_IN(ha, ®->isp), 503 req->ring_index); 504 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, ®->isp)); 505 } 506 } 507 } 508 509 /** 510 * qla2x00_marker() - Send a marker IOCB to the firmware. 511 * @ha: HA context 512 * @loop_id: loop ID 513 * @lun: LUN 514 * @type: marker modifier 515 * 516 * Can be called from both normal and interrupt context. 517 * 518 * Returns non-zero if a failure occurred, else zero. 519 */ 520 static int 521 __qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req, 522 struct rsp_que *rsp, uint16_t loop_id, 523 uint16_t lun, uint8_t type) 524 { 525 mrk_entry_t *mrk; 526 struct mrk_entry_24xx *mrk24 = NULL; 527 528 struct qla_hw_data *ha = vha->hw; 529 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 530 531 req = ha->req_q_map[0]; 532 mrk = (mrk_entry_t *)qla2x00_alloc_iocbs(vha, NULL); 533 if (mrk == NULL) { 534 ql_log(ql_log_warn, base_vha, 0x3026, 535 "Failed to allocate Marker IOCB.\n"); 536 537 return (QLA_FUNCTION_FAILED); 538 } 539 540 mrk->entry_type = MARKER_TYPE; 541 mrk->modifier = type; 542 if (type != MK_SYNC_ALL) { 543 if (IS_FWI2_CAPABLE(ha)) { 544 mrk24 = (struct mrk_entry_24xx *) mrk; 545 mrk24->nport_handle = cpu_to_le16(loop_id); 546 mrk24->lun[1] = LSB(lun); 547 mrk24->lun[2] = MSB(lun); 548 host_to_fcp_swap(mrk24->lun, sizeof(mrk24->lun)); 549 mrk24->vp_index = vha->vp_idx; 550 mrk24->handle = MAKE_HANDLE(req->id, mrk24->handle); 551 } else { 552 SET_TARGET_ID(ha, mrk->target, loop_id); 553 mrk->lun = cpu_to_le16(lun); 554 } 555 } 556 wmb(); 557 558 qla2x00_start_iocbs(vha, req); 559 560 return (QLA_SUCCESS); 561 } 562 563 int 564 qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req, 565 struct rsp_que *rsp, uint16_t loop_id, uint16_t lun, 566 uint8_t type) 567 { 568 int ret; 569 unsigned long flags = 0; 570 571 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 572 ret = __qla2x00_marker(vha, req, rsp, loop_id, lun, type); 573 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 574 575 return (ret); 576 } 577 578 /* 579 * qla2x00_issue_marker 580 * 581 * Issue marker 582 * Caller CAN have hardware lock held as specified by ha_locked parameter. 583 * Might release it, then reaquire. 584 */ 585 int qla2x00_issue_marker(scsi_qla_host_t *vha, int ha_locked) 586 { 587 if (ha_locked) { 588 if (__qla2x00_marker(vha, vha->req, vha->req->rsp, 0, 0, 589 MK_SYNC_ALL) != QLA_SUCCESS) 590 return QLA_FUNCTION_FAILED; 591 } else { 592 if (qla2x00_marker(vha, vha->req, vha->req->rsp, 0, 0, 593 MK_SYNC_ALL) != QLA_SUCCESS) 594 return QLA_FUNCTION_FAILED; 595 } 596 vha->marker_needed = 0; 597 598 return QLA_SUCCESS; 599 } 600 601 static inline int 602 qla24xx_build_scsi_type_6_iocbs(srb_t *sp, struct cmd_type_6 *cmd_pkt, 603 uint16_t tot_dsds) 604 { 605 uint32_t *cur_dsd = NULL; 606 scsi_qla_host_t *vha; 607 struct qla_hw_data *ha; 608 struct scsi_cmnd *cmd; 609 struct scatterlist *cur_seg; 610 uint32_t *dsd_seg; 611 void *next_dsd; 612 uint8_t avail_dsds; 613 uint8_t first_iocb = 1; 614 uint32_t dsd_list_len; 615 struct dsd_dma *dsd_ptr; 616 struct ct6_dsd *ctx; 617 618 cmd = GET_CMD_SP(sp); 619 620 /* Update entry type to indicate Command Type 3 IOCB */ 621 *((uint32_t *)(&cmd_pkt->entry_type)) = 622 __constant_cpu_to_le32(COMMAND_TYPE_6); 623 624 /* No data transfer */ 625 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) { 626 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 627 return 0; 628 } 629 630 vha = sp->fcport->vha; 631 ha = vha->hw; 632 633 /* Set transfer direction */ 634 if (cmd->sc_data_direction == DMA_TO_DEVICE) { 635 cmd_pkt->control_flags = 636 __constant_cpu_to_le16(CF_WRITE_DATA); 637 vha->qla_stats.output_bytes += scsi_bufflen(cmd); 638 vha->qla_stats.output_requests++; 639 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) { 640 cmd_pkt->control_flags = 641 __constant_cpu_to_le16(CF_READ_DATA); 642 vha->qla_stats.input_bytes += scsi_bufflen(cmd); 643 vha->qla_stats.input_requests++; 644 } 645 646 cur_seg = scsi_sglist(cmd); 647 ctx = GET_CMD_CTX_SP(sp); 648 649 while (tot_dsds) { 650 avail_dsds = (tot_dsds > QLA_DSDS_PER_IOCB) ? 651 QLA_DSDS_PER_IOCB : tot_dsds; 652 tot_dsds -= avail_dsds; 653 dsd_list_len = (avail_dsds + 1) * QLA_DSD_SIZE; 654 655 dsd_ptr = list_first_entry(&ha->gbl_dsd_list, 656 struct dsd_dma, list); 657 next_dsd = dsd_ptr->dsd_addr; 658 list_del(&dsd_ptr->list); 659 ha->gbl_dsd_avail--; 660 list_add_tail(&dsd_ptr->list, &ctx->dsd_list); 661 ctx->dsd_use_cnt++; 662 ha->gbl_dsd_inuse++; 663 664 if (first_iocb) { 665 first_iocb = 0; 666 dsd_seg = (uint32_t *)&cmd_pkt->fcp_data_dseg_address; 667 *dsd_seg++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 668 *dsd_seg++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 669 cmd_pkt->fcp_data_dseg_len = cpu_to_le32(dsd_list_len); 670 } else { 671 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 672 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 673 *cur_dsd++ = cpu_to_le32(dsd_list_len); 674 } 675 cur_dsd = (uint32_t *)next_dsd; 676 while (avail_dsds) { 677 dma_addr_t sle_dma; 678 679 sle_dma = sg_dma_address(cur_seg); 680 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 681 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 682 *cur_dsd++ = cpu_to_le32(sg_dma_len(cur_seg)); 683 cur_seg = sg_next(cur_seg); 684 avail_dsds--; 685 } 686 } 687 688 /* Null termination */ 689 *cur_dsd++ = 0; 690 *cur_dsd++ = 0; 691 *cur_dsd++ = 0; 692 cmd_pkt->control_flags |= CF_DATA_SEG_DESCR_ENABLE; 693 return 0; 694 } 695 696 /* 697 * qla24xx_calc_dsd_lists() - Determine number of DSD list required 698 * for Command Type 6. 699 * 700 * @dsds: number of data segment decriptors needed 701 * 702 * Returns the number of dsd list needed to store @dsds. 703 */ 704 inline uint16_t 705 qla24xx_calc_dsd_lists(uint16_t dsds) 706 { 707 uint16_t dsd_lists = 0; 708 709 dsd_lists = (dsds/QLA_DSDS_PER_IOCB); 710 if (dsds % QLA_DSDS_PER_IOCB) 711 dsd_lists++; 712 return dsd_lists; 713 } 714 715 716 /** 717 * qla24xx_build_scsi_iocbs() - Build IOCB command utilizing Command Type 7 718 * IOCB types. 719 * 720 * @sp: SRB command to process 721 * @cmd_pkt: Command type 3 IOCB 722 * @tot_dsds: Total number of segments to transfer 723 */ 724 inline void 725 qla24xx_build_scsi_iocbs(srb_t *sp, struct cmd_type_7 *cmd_pkt, 726 uint16_t tot_dsds) 727 { 728 uint16_t avail_dsds; 729 uint32_t *cur_dsd; 730 scsi_qla_host_t *vha; 731 struct scsi_cmnd *cmd; 732 struct scatterlist *sg; 733 int i; 734 struct req_que *req; 735 736 cmd = GET_CMD_SP(sp); 737 738 /* Update entry type to indicate Command Type 3 IOCB */ 739 *((uint32_t *)(&cmd_pkt->entry_type)) = 740 __constant_cpu_to_le32(COMMAND_TYPE_7); 741 742 /* No data transfer */ 743 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) { 744 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 745 return; 746 } 747 748 vha = sp->fcport->vha; 749 req = vha->req; 750 751 /* Set transfer direction */ 752 if (cmd->sc_data_direction == DMA_TO_DEVICE) { 753 cmd_pkt->task_mgmt_flags = 754 __constant_cpu_to_le16(TMF_WRITE_DATA); 755 vha->qla_stats.output_bytes += scsi_bufflen(cmd); 756 vha->qla_stats.output_requests++; 757 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) { 758 cmd_pkt->task_mgmt_flags = 759 __constant_cpu_to_le16(TMF_READ_DATA); 760 vha->qla_stats.input_bytes += scsi_bufflen(cmd); 761 vha->qla_stats.input_requests++; 762 } 763 764 /* One DSD is available in the Command Type 3 IOCB */ 765 avail_dsds = 1; 766 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address; 767 768 /* Load data segments */ 769 770 scsi_for_each_sg(cmd, sg, tot_dsds, i) { 771 dma_addr_t sle_dma; 772 cont_a64_entry_t *cont_pkt; 773 774 /* Allocate additional continuation packets? */ 775 if (avail_dsds == 0) { 776 /* 777 * Five DSDs are available in the Continuation 778 * Type 1 IOCB. 779 */ 780 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req); 781 cur_dsd = (uint32_t *)cont_pkt->dseg_0_address; 782 avail_dsds = 5; 783 } 784 785 sle_dma = sg_dma_address(sg); 786 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 787 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 788 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 789 avail_dsds--; 790 } 791 } 792 793 struct fw_dif_context { 794 uint32_t ref_tag; 795 uint16_t app_tag; 796 uint8_t ref_tag_mask[4]; /* Validation/Replacement Mask*/ 797 uint8_t app_tag_mask[2]; /* Validation/Replacement Mask*/ 798 }; 799 800 /* 801 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command 802 * 803 */ 804 static inline void 805 qla24xx_set_t10dif_tags(srb_t *sp, struct fw_dif_context *pkt, 806 unsigned int protcnt) 807 { 808 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 809 810 switch (scsi_get_prot_type(cmd)) { 811 case SCSI_PROT_DIF_TYPE0: 812 /* 813 * No check for ql2xenablehba_err_chk, as it would be an 814 * I/O error if hba tag generation is not done. 815 */ 816 pkt->ref_tag = cpu_to_le32((uint32_t) 817 (0xffffffff & scsi_get_lba(cmd))); 818 819 if (!qla2x00_hba_err_chk_enabled(sp)) 820 break; 821 822 pkt->ref_tag_mask[0] = 0xff; 823 pkt->ref_tag_mask[1] = 0xff; 824 pkt->ref_tag_mask[2] = 0xff; 825 pkt->ref_tag_mask[3] = 0xff; 826 break; 827 828 /* 829 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to 830 * match LBA in CDB + N 831 */ 832 case SCSI_PROT_DIF_TYPE2: 833 pkt->app_tag = __constant_cpu_to_le16(0); 834 pkt->app_tag_mask[0] = 0x0; 835 pkt->app_tag_mask[1] = 0x0; 836 837 pkt->ref_tag = cpu_to_le32((uint32_t) 838 (0xffffffff & scsi_get_lba(cmd))); 839 840 if (!qla2x00_hba_err_chk_enabled(sp)) 841 break; 842 843 /* enable ALL bytes of the ref tag */ 844 pkt->ref_tag_mask[0] = 0xff; 845 pkt->ref_tag_mask[1] = 0xff; 846 pkt->ref_tag_mask[2] = 0xff; 847 pkt->ref_tag_mask[3] = 0xff; 848 break; 849 850 /* For Type 3 protection: 16 bit GUARD only */ 851 case SCSI_PROT_DIF_TYPE3: 852 pkt->ref_tag_mask[0] = pkt->ref_tag_mask[1] = 853 pkt->ref_tag_mask[2] = pkt->ref_tag_mask[3] = 854 0x00; 855 break; 856 857 /* 858 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and 859 * 16 bit app tag. 860 */ 861 case SCSI_PROT_DIF_TYPE1: 862 pkt->ref_tag = cpu_to_le32((uint32_t) 863 (0xffffffff & scsi_get_lba(cmd))); 864 pkt->app_tag = __constant_cpu_to_le16(0); 865 pkt->app_tag_mask[0] = 0x0; 866 pkt->app_tag_mask[1] = 0x0; 867 868 if (!qla2x00_hba_err_chk_enabled(sp)) 869 break; 870 871 /* enable ALL bytes of the ref tag */ 872 pkt->ref_tag_mask[0] = 0xff; 873 pkt->ref_tag_mask[1] = 0xff; 874 pkt->ref_tag_mask[2] = 0xff; 875 pkt->ref_tag_mask[3] = 0xff; 876 break; 877 } 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 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, struct qla_tgt_cmd *tc) 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; /* protection interval */ 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; 957 struct scsi_qla_host *vha; 958 959 memset(&sgx, 0, sizeof(struct qla2_sgx)); 960 if (sp) { 961 vha = sp->fcport->vha; 962 cmd = GET_CMD_SP(sp); 963 prot_int = cmd->device->sector_size; 964 965 sgx.tot_bytes = scsi_bufflen(cmd); 966 sgx.cur_sg = scsi_sglist(cmd); 967 sgx.sp = sp; 968 969 sg_prot = scsi_prot_sglist(cmd); 970 } else if (tc) { 971 vha = tc->vha; 972 prot_int = tc->blk_sz; 973 sgx.tot_bytes = tc->bufflen; 974 sgx.cur_sg = tc->sg; 975 sg_prot = tc->prot_sg; 976 } else { 977 BUG(); 978 return 1; 979 } 980 981 while (qla24xx_get_one_block_sg(prot_int, &sgx, &partial)) { 982 983 sle_dma = sgx.dma_addr; 984 sle_dma_len = sgx.dma_len; 985 alloc_and_fill: 986 /* Allocate additional continuation packets? */ 987 if (avail_dsds == 0) { 988 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ? 989 QLA_DSDS_PER_IOCB : used_dsds; 990 dsd_list_len = (avail_dsds + 1) * 12; 991 used_dsds -= avail_dsds; 992 993 /* allocate tracking DS */ 994 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC); 995 if (!dsd_ptr) 996 return 1; 997 998 /* allocate new list */ 999 dsd_ptr->dsd_addr = next_dsd = 1000 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, 1001 &dsd_ptr->dsd_list_dma); 1002 1003 if (!next_dsd) { 1004 /* 1005 * Need to cleanup only this dsd_ptr, rest 1006 * will be done by sp_free_dma() 1007 */ 1008 kfree(dsd_ptr); 1009 return 1; 1010 } 1011 1012 if (sp) { 1013 list_add_tail(&dsd_ptr->list, 1014 &((struct crc_context *) 1015 sp->u.scmd.ctx)->dsd_list); 1016 1017 sp->flags |= SRB_CRC_CTX_DSD_VALID; 1018 } else { 1019 list_add_tail(&dsd_ptr->list, 1020 &(tc->ctx->dsd_list)); 1021 tc->ctx_dsd_alloced = 1; 1022 } 1023 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 int 1059 qla24xx_walk_and_build_sglist(struct qla_hw_data *ha, srb_t *sp, uint32_t *dsd, 1060 uint16_t tot_dsds, struct qla_tgt_cmd *tc) 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, *sgl; 1067 uint32_t *cur_dsd = dsd; 1068 int i; 1069 uint16_t used_dsds = tot_dsds; 1070 struct scsi_cmnd *cmd; 1071 struct scsi_qla_host *vha; 1072 1073 if (sp) { 1074 cmd = GET_CMD_SP(sp); 1075 sgl = scsi_sglist(cmd); 1076 vha = sp->fcport->vha; 1077 } else if (tc) { 1078 sgl = tc->sg; 1079 vha = tc->vha; 1080 } else { 1081 BUG(); 1082 return 1; 1083 } 1084 1085 1086 for_each_sg(sgl, sg, tot_dsds, i) { 1087 dma_addr_t sle_dma; 1088 1089 /* Allocate additional continuation packets? */ 1090 if (avail_dsds == 0) { 1091 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ? 1092 QLA_DSDS_PER_IOCB : used_dsds; 1093 dsd_list_len = (avail_dsds + 1) * 12; 1094 used_dsds -= avail_dsds; 1095 1096 /* allocate tracking DS */ 1097 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC); 1098 if (!dsd_ptr) 1099 return 1; 1100 1101 /* allocate new list */ 1102 dsd_ptr->dsd_addr = next_dsd = 1103 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, 1104 &dsd_ptr->dsd_list_dma); 1105 1106 if (!next_dsd) { 1107 /* 1108 * Need to cleanup only this dsd_ptr, rest 1109 * will be done by sp_free_dma() 1110 */ 1111 kfree(dsd_ptr); 1112 return 1; 1113 } 1114 1115 if (sp) { 1116 list_add_tail(&dsd_ptr->list, 1117 &((struct crc_context *) 1118 sp->u.scmd.ctx)->dsd_list); 1119 1120 sp->flags |= SRB_CRC_CTX_DSD_VALID; 1121 } else { 1122 list_add_tail(&dsd_ptr->list, 1123 &(tc->ctx->dsd_list)); 1124 tc->ctx_dsd_alloced = 1; 1125 } 1126 1127 /* add new list to cmd iocb or last list */ 1128 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 1129 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 1130 *cur_dsd++ = dsd_list_len; 1131 cur_dsd = (uint32_t *)next_dsd; 1132 } 1133 sle_dma = sg_dma_address(sg); 1134 1135 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 1136 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 1137 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 1138 avail_dsds--; 1139 1140 } 1141 /* Null termination */ 1142 *cur_dsd++ = 0; 1143 *cur_dsd++ = 0; 1144 *cur_dsd++ = 0; 1145 return 0; 1146 } 1147 1148 int 1149 qla24xx_walk_and_build_prot_sglist(struct qla_hw_data *ha, srb_t *sp, 1150 uint32_t *dsd, uint16_t tot_dsds, struct qla_tgt_cmd *tc) 1151 { 1152 void *next_dsd; 1153 uint8_t avail_dsds = 0; 1154 uint32_t dsd_list_len; 1155 struct dsd_dma *dsd_ptr; 1156 struct scatterlist *sg, *sgl; 1157 int i; 1158 struct scsi_cmnd *cmd; 1159 uint32_t *cur_dsd = dsd; 1160 uint16_t used_dsds = tot_dsds; 1161 struct scsi_qla_host *vha; 1162 1163 if (sp) { 1164 cmd = GET_CMD_SP(sp); 1165 sgl = scsi_prot_sglist(cmd); 1166 vha = sp->fcport->vha; 1167 } else if (tc) { 1168 vha = tc->vha; 1169 sgl = tc->prot_sg; 1170 } else { 1171 BUG(); 1172 return 1; 1173 } 1174 1175 ql_dbg(ql_dbg_tgt, vha, 0xe021, 1176 "%s: enter\n", __func__); 1177 1178 for_each_sg(sgl, sg, tot_dsds, i) { 1179 dma_addr_t sle_dma; 1180 1181 /* Allocate additional continuation packets? */ 1182 if (avail_dsds == 0) { 1183 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ? 1184 QLA_DSDS_PER_IOCB : used_dsds; 1185 dsd_list_len = (avail_dsds + 1) * 12; 1186 used_dsds -= avail_dsds; 1187 1188 /* allocate tracking DS */ 1189 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC); 1190 if (!dsd_ptr) 1191 return 1; 1192 1193 /* allocate new list */ 1194 dsd_ptr->dsd_addr = next_dsd = 1195 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, 1196 &dsd_ptr->dsd_list_dma); 1197 1198 if (!next_dsd) { 1199 /* 1200 * Need to cleanup only this dsd_ptr, rest 1201 * will be done by sp_free_dma() 1202 */ 1203 kfree(dsd_ptr); 1204 return 1; 1205 } 1206 1207 if (sp) { 1208 list_add_tail(&dsd_ptr->list, 1209 &((struct crc_context *) 1210 sp->u.scmd.ctx)->dsd_list); 1211 1212 sp->flags |= SRB_CRC_CTX_DSD_VALID; 1213 } else { 1214 list_add_tail(&dsd_ptr->list, 1215 &(tc->ctx->dsd_list)); 1216 tc->ctx_dsd_alloced = 1; 1217 } 1218 1219 /* add new list to cmd iocb or last list */ 1220 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma)); 1221 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma)); 1222 *cur_dsd++ = dsd_list_len; 1223 cur_dsd = (uint32_t *)next_dsd; 1224 } 1225 sle_dma = sg_dma_address(sg); 1226 1227 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 1228 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 1229 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 1230 1231 avail_dsds--; 1232 } 1233 /* Null termination */ 1234 *cur_dsd++ = 0; 1235 *cur_dsd++ = 0; 1236 *cur_dsd++ = 0; 1237 return 0; 1238 } 1239 1240 /** 1241 * qla24xx_build_scsi_crc_2_iocbs() - Build IOCB command utilizing Command 1242 * Type 6 IOCB types. 1243 * 1244 * @sp: SRB command to process 1245 * @cmd_pkt: Command type 3 IOCB 1246 * @tot_dsds: Total number of segments to transfer 1247 */ 1248 static inline int 1249 qla24xx_build_scsi_crc_2_iocbs(srb_t *sp, struct cmd_type_crc_2 *cmd_pkt, 1250 uint16_t tot_dsds, uint16_t tot_prot_dsds, uint16_t fw_prot_opts) 1251 { 1252 uint32_t *cur_dsd, *fcp_dl; 1253 scsi_qla_host_t *vha; 1254 struct scsi_cmnd *cmd; 1255 int sgc; 1256 uint32_t total_bytes = 0; 1257 uint32_t data_bytes; 1258 uint32_t dif_bytes; 1259 uint8_t bundling = 1; 1260 uint16_t blk_size; 1261 uint8_t *clr_ptr; 1262 struct crc_context *crc_ctx_pkt = NULL; 1263 struct qla_hw_data *ha; 1264 uint8_t additional_fcpcdb_len; 1265 uint16_t fcp_cmnd_len; 1266 struct fcp_cmnd *fcp_cmnd; 1267 dma_addr_t crc_ctx_dma; 1268 char tag[2]; 1269 1270 cmd = GET_CMD_SP(sp); 1271 1272 sgc = 0; 1273 /* Update entry type to indicate Command Type CRC_2 IOCB */ 1274 *((uint32_t *)(&cmd_pkt->entry_type)) = 1275 __constant_cpu_to_le32(COMMAND_TYPE_CRC_2); 1276 1277 vha = sp->fcport->vha; 1278 ha = vha->hw; 1279 1280 /* No data transfer */ 1281 data_bytes = scsi_bufflen(cmd); 1282 if (!data_bytes || cmd->sc_data_direction == DMA_NONE) { 1283 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 1284 return QLA_SUCCESS; 1285 } 1286 1287 cmd_pkt->vp_index = sp->fcport->vha->vp_idx; 1288 1289 /* Set transfer direction */ 1290 if (cmd->sc_data_direction == DMA_TO_DEVICE) { 1291 cmd_pkt->control_flags = 1292 __constant_cpu_to_le16(CF_WRITE_DATA); 1293 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) { 1294 cmd_pkt->control_flags = 1295 __constant_cpu_to_le16(CF_READ_DATA); 1296 } 1297 1298 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) || 1299 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP) || 1300 (scsi_get_prot_op(cmd) == SCSI_PROT_READ_STRIP) || 1301 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_INSERT)) 1302 bundling = 0; 1303 1304 /* Allocate CRC context from global pool */ 1305 crc_ctx_pkt = sp->u.scmd.ctx = 1306 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 1307 1308 if (!crc_ctx_pkt) 1309 goto crc_queuing_error; 1310 1311 /* Zero out CTX area. */ 1312 clr_ptr = (uint8_t *)crc_ctx_pkt; 1313 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt)); 1314 1315 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 1316 1317 sp->flags |= SRB_CRC_CTX_DMA_VALID; 1318 1319 /* Set handle */ 1320 crc_ctx_pkt->handle = cmd_pkt->handle; 1321 1322 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 1323 1324 qla24xx_set_t10dif_tags(sp, (struct fw_dif_context *) 1325 &crc_ctx_pkt->ref_tag, tot_prot_dsds); 1326 1327 cmd_pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma)); 1328 cmd_pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma)); 1329 cmd_pkt->crc_context_len = CRC_CONTEXT_LEN_FW; 1330 1331 /* Determine SCSI command length -- align to 4 byte boundary */ 1332 if (cmd->cmd_len > 16) { 1333 additional_fcpcdb_len = cmd->cmd_len - 16; 1334 if ((cmd->cmd_len % 4) != 0) { 1335 /* SCSI cmd > 16 bytes must be multiple of 4 */ 1336 goto crc_queuing_error; 1337 } 1338 fcp_cmnd_len = 12 + cmd->cmd_len + 4; 1339 } else { 1340 additional_fcpcdb_len = 0; 1341 fcp_cmnd_len = 12 + 16 + 4; 1342 } 1343 1344 fcp_cmnd = &crc_ctx_pkt->fcp_cmnd; 1345 1346 fcp_cmnd->additional_cdb_len = additional_fcpcdb_len; 1347 if (cmd->sc_data_direction == DMA_TO_DEVICE) 1348 fcp_cmnd->additional_cdb_len |= 1; 1349 else if (cmd->sc_data_direction == DMA_FROM_DEVICE) 1350 fcp_cmnd->additional_cdb_len |= 2; 1351 1352 int_to_scsilun(cmd->device->lun, &fcp_cmnd->lun); 1353 memcpy(fcp_cmnd->cdb, cmd->cmnd, cmd->cmd_len); 1354 cmd_pkt->fcp_cmnd_dseg_len = cpu_to_le16(fcp_cmnd_len); 1355 cmd_pkt->fcp_cmnd_dseg_address[0] = cpu_to_le32( 1356 LSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF)); 1357 cmd_pkt->fcp_cmnd_dseg_address[1] = cpu_to_le32( 1358 MSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF)); 1359 fcp_cmnd->task_management = 0; 1360 1361 /* 1362 * Update tagged queuing modifier if using command tag queuing 1363 */ 1364 if (scsi_populate_tag_msg(cmd, tag)) { 1365 switch (tag[0]) { 1366 case HEAD_OF_QUEUE_TAG: 1367 fcp_cmnd->task_attribute = TSK_HEAD_OF_QUEUE; 1368 break; 1369 case ORDERED_QUEUE_TAG: 1370 fcp_cmnd->task_attribute = TSK_ORDERED; 1371 break; 1372 default: 1373 fcp_cmnd->task_attribute = TSK_SIMPLE; 1374 break; 1375 } 1376 } else { 1377 fcp_cmnd->task_attribute = TSK_SIMPLE; 1378 } 1379 1380 cmd_pkt->fcp_rsp_dseg_len = 0; /* Let response come in status iocb */ 1381 1382 /* Compute dif len and adjust data len to incude protection */ 1383 dif_bytes = 0; 1384 blk_size = cmd->device->sector_size; 1385 dif_bytes = (data_bytes / blk_size) * 8; 1386 1387 switch (scsi_get_prot_op(GET_CMD_SP(sp))) { 1388 case SCSI_PROT_READ_INSERT: 1389 case SCSI_PROT_WRITE_STRIP: 1390 total_bytes = data_bytes; 1391 data_bytes += dif_bytes; 1392 break; 1393 1394 case SCSI_PROT_READ_STRIP: 1395 case SCSI_PROT_WRITE_INSERT: 1396 case SCSI_PROT_READ_PASS: 1397 case SCSI_PROT_WRITE_PASS: 1398 total_bytes = data_bytes + dif_bytes; 1399 break; 1400 default: 1401 BUG(); 1402 } 1403 1404 if (!qla2x00_hba_err_chk_enabled(sp)) 1405 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 1406 /* HBA error checking enabled */ 1407 else if (IS_PI_UNINIT_CAPABLE(ha)) { 1408 if ((scsi_get_prot_type(GET_CMD_SP(sp)) == SCSI_PROT_DIF_TYPE1) 1409 || (scsi_get_prot_type(GET_CMD_SP(sp)) == 1410 SCSI_PROT_DIF_TYPE2)) 1411 fw_prot_opts |= BIT_10; 1412 else if (scsi_get_prot_type(GET_CMD_SP(sp)) == 1413 SCSI_PROT_DIF_TYPE3) 1414 fw_prot_opts |= BIT_11; 1415 } 1416 1417 if (!bundling) { 1418 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address; 1419 } else { 1420 /* 1421 * Configure Bundling if we need to fetch interlaving 1422 * protection PCI accesses 1423 */ 1424 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 1425 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 1426 crc_ctx_pkt->u.bundling.dseg_count = cpu_to_le16(tot_dsds - 1427 tot_prot_dsds); 1428 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address; 1429 } 1430 1431 /* Finish the common fields of CRC pkt */ 1432 crc_ctx_pkt->blk_size = cpu_to_le16(blk_size); 1433 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 1434 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 1435 crc_ctx_pkt->guard_seed = __constant_cpu_to_le16(0); 1436 /* Fibre channel byte count */ 1437 cmd_pkt->byte_count = cpu_to_le32(total_bytes); 1438 fcp_dl = (uint32_t *)(crc_ctx_pkt->fcp_cmnd.cdb + 16 + 1439 additional_fcpcdb_len); 1440 *fcp_dl = htonl(total_bytes); 1441 1442 if (!data_bytes || cmd->sc_data_direction == DMA_NONE) { 1443 cmd_pkt->byte_count = __constant_cpu_to_le32(0); 1444 return QLA_SUCCESS; 1445 } 1446 /* Walks data segments */ 1447 1448 cmd_pkt->control_flags |= 1449 __constant_cpu_to_le16(CF_DATA_SEG_DESCR_ENABLE); 1450 1451 if (!bundling && tot_prot_dsds) { 1452 if (qla24xx_walk_and_build_sglist_no_difb(ha, sp, 1453 cur_dsd, tot_dsds, NULL)) 1454 goto crc_queuing_error; 1455 } else if (qla24xx_walk_and_build_sglist(ha, sp, cur_dsd, 1456 (tot_dsds - tot_prot_dsds), NULL)) 1457 goto crc_queuing_error; 1458 1459 if (bundling && tot_prot_dsds) { 1460 /* Walks dif segments */ 1461 cmd_pkt->control_flags |= 1462 __constant_cpu_to_le16(CF_DIF_SEG_DESCR_ENABLE); 1463 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address; 1464 if (qla24xx_walk_and_build_prot_sglist(ha, sp, cur_dsd, 1465 tot_prot_dsds, NULL)) 1466 goto crc_queuing_error; 1467 } 1468 return QLA_SUCCESS; 1469 1470 crc_queuing_error: 1471 /* Cleanup will be performed by the caller */ 1472 1473 return QLA_FUNCTION_FAILED; 1474 } 1475 1476 /** 1477 * qla24xx_start_scsi() - Send a SCSI command to the ISP 1478 * @sp: command to send to the ISP 1479 * 1480 * Returns non-zero if a failure occurred, else zero. 1481 */ 1482 int 1483 qla24xx_start_scsi(srb_t *sp) 1484 { 1485 int ret, nseg; 1486 unsigned long flags; 1487 uint32_t *clr_ptr; 1488 uint32_t index; 1489 uint32_t handle; 1490 struct cmd_type_7 *cmd_pkt; 1491 uint16_t cnt; 1492 uint16_t req_cnt; 1493 uint16_t tot_dsds; 1494 struct req_que *req = NULL; 1495 struct rsp_que *rsp = NULL; 1496 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 1497 struct scsi_qla_host *vha = sp->fcport->vha; 1498 struct qla_hw_data *ha = vha->hw; 1499 char tag[2]; 1500 1501 /* Setup device pointers. */ 1502 ret = 0; 1503 1504 qla25xx_set_que(sp, &rsp); 1505 req = vha->req; 1506 1507 /* So we know we haven't pci_map'ed anything yet */ 1508 tot_dsds = 0; 1509 1510 /* Send marker if required */ 1511 if (vha->marker_needed != 0) { 1512 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) != 1513 QLA_SUCCESS) 1514 return QLA_FUNCTION_FAILED; 1515 vha->marker_needed = 0; 1516 } 1517 1518 /* Acquire ring specific lock */ 1519 spin_lock_irqsave(&ha->hardware_lock, flags); 1520 1521 /* Check for room in outstanding command list. */ 1522 handle = req->current_outstanding_cmd; 1523 for (index = 1; index < req->num_outstanding_cmds; index++) { 1524 handle++; 1525 if (handle == req->num_outstanding_cmds) 1526 handle = 1; 1527 if (!req->outstanding_cmds[handle]) 1528 break; 1529 } 1530 if (index == req->num_outstanding_cmds) 1531 goto queuing_error; 1532 1533 /* Map the sg table so we have an accurate count of sg entries needed */ 1534 if (scsi_sg_count(cmd)) { 1535 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd), 1536 scsi_sg_count(cmd), cmd->sc_data_direction); 1537 if (unlikely(!nseg)) 1538 goto queuing_error; 1539 } else 1540 nseg = 0; 1541 1542 tot_dsds = nseg; 1543 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds); 1544 if (req->cnt < (req_cnt + 2)) { 1545 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr : 1546 RD_REG_DWORD_RELAXED(req->req_q_out); 1547 if (req->ring_index < cnt) 1548 req->cnt = cnt - req->ring_index; 1549 else 1550 req->cnt = req->length - 1551 (req->ring_index - cnt); 1552 if (req->cnt < (req_cnt + 2)) 1553 goto queuing_error; 1554 } 1555 1556 /* Build command packet. */ 1557 req->current_outstanding_cmd = handle; 1558 req->outstanding_cmds[handle] = sp; 1559 sp->handle = handle; 1560 cmd->host_scribble = (unsigned char *)(unsigned long)handle; 1561 req->cnt -= req_cnt; 1562 1563 cmd_pkt = (struct cmd_type_7 *)req->ring_ptr; 1564 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 1565 1566 /* Zero out remaining portion of packet. */ 1567 /* tagged queuing modifier -- default is TSK_SIMPLE (0). */ 1568 clr_ptr = (uint32_t *)cmd_pkt + 2; 1569 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 1570 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 1571 1572 /* Set NPORT-ID and LUN number*/ 1573 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1574 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; 1575 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; 1576 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; 1577 cmd_pkt->vp_index = sp->fcport->vha->vp_idx; 1578 1579 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun); 1580 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun)); 1581 1582 /* Update tagged queuing modifier -- default is TSK_SIMPLE (0). */ 1583 if (scsi_populate_tag_msg(cmd, tag)) { 1584 switch (tag[0]) { 1585 case HEAD_OF_QUEUE_TAG: 1586 cmd_pkt->task = TSK_HEAD_OF_QUEUE; 1587 break; 1588 case ORDERED_QUEUE_TAG: 1589 cmd_pkt->task = TSK_ORDERED; 1590 break; 1591 default: 1592 cmd_pkt->task = TSK_SIMPLE; 1593 break; 1594 } 1595 } else { 1596 cmd_pkt->task = TSK_SIMPLE; 1597 } 1598 1599 /* Load SCSI command packet. */ 1600 memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len); 1601 host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb)); 1602 1603 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); 1604 1605 /* Build IOCB segments */ 1606 qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds); 1607 1608 /* Set total data segment count. */ 1609 cmd_pkt->entry_count = (uint8_t)req_cnt; 1610 /* Specify response queue number where completion should happen */ 1611 cmd_pkt->entry_status = (uint8_t) rsp->id; 1612 wmb(); 1613 /* Adjust ring index. */ 1614 req->ring_index++; 1615 if (req->ring_index == req->length) { 1616 req->ring_index = 0; 1617 req->ring_ptr = req->ring; 1618 } else 1619 req->ring_ptr++; 1620 1621 sp->flags |= SRB_DMA_VALID; 1622 1623 /* Set chip new ring index. */ 1624 WRT_REG_DWORD(req->req_q_in, req->ring_index); 1625 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr); 1626 1627 /* Manage unprocessed RIO/ZIO commands in response queue. */ 1628 if (vha->flags.process_response_queue && 1629 rsp->ring_ptr->signature != RESPONSE_PROCESSED) 1630 qla24xx_process_response_queue(vha, rsp); 1631 1632 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1633 return QLA_SUCCESS; 1634 1635 queuing_error: 1636 if (tot_dsds) 1637 scsi_dma_unmap(cmd); 1638 1639 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1640 1641 return QLA_FUNCTION_FAILED; 1642 } 1643 1644 /** 1645 * qla24xx_dif_start_scsi() - Send a SCSI command to the ISP 1646 * @sp: command to send to the ISP 1647 * 1648 * Returns non-zero if a failure occurred, else zero. 1649 */ 1650 int 1651 qla24xx_dif_start_scsi(srb_t *sp) 1652 { 1653 int nseg; 1654 unsigned long flags; 1655 uint32_t *clr_ptr; 1656 uint32_t index; 1657 uint32_t handle; 1658 uint16_t cnt; 1659 uint16_t req_cnt = 0; 1660 uint16_t tot_dsds; 1661 uint16_t tot_prot_dsds; 1662 uint16_t fw_prot_opts = 0; 1663 struct req_que *req = NULL; 1664 struct rsp_que *rsp = NULL; 1665 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 1666 struct scsi_qla_host *vha = sp->fcport->vha; 1667 struct qla_hw_data *ha = vha->hw; 1668 struct cmd_type_crc_2 *cmd_pkt; 1669 uint32_t status = 0; 1670 1671 #define QDSS_GOT_Q_SPACE BIT_0 1672 1673 /* Only process protection or >16 cdb in this routine */ 1674 if (scsi_get_prot_op(cmd) == SCSI_PROT_NORMAL) { 1675 if (cmd->cmd_len <= 16) 1676 return qla24xx_start_scsi(sp); 1677 } 1678 1679 /* Setup device pointers. */ 1680 1681 qla25xx_set_que(sp, &rsp); 1682 req = vha->req; 1683 1684 /* So we know we haven't pci_map'ed anything yet */ 1685 tot_dsds = 0; 1686 1687 /* Send marker if required */ 1688 if (vha->marker_needed != 0) { 1689 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) != 1690 QLA_SUCCESS) 1691 return QLA_FUNCTION_FAILED; 1692 vha->marker_needed = 0; 1693 } 1694 1695 /* Acquire ring specific lock */ 1696 spin_lock_irqsave(&ha->hardware_lock, flags); 1697 1698 /* Check for room in outstanding command list. */ 1699 handle = req->current_outstanding_cmd; 1700 for (index = 1; index < req->num_outstanding_cmds; index++) { 1701 handle++; 1702 if (handle == req->num_outstanding_cmds) 1703 handle = 1; 1704 if (!req->outstanding_cmds[handle]) 1705 break; 1706 } 1707 1708 if (index == req->num_outstanding_cmds) 1709 goto queuing_error; 1710 1711 /* Compute number of required data segments */ 1712 /* Map the sg table so we have an accurate count of sg entries needed */ 1713 if (scsi_sg_count(cmd)) { 1714 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd), 1715 scsi_sg_count(cmd), cmd->sc_data_direction); 1716 if (unlikely(!nseg)) 1717 goto queuing_error; 1718 else 1719 sp->flags |= SRB_DMA_VALID; 1720 1721 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) || 1722 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) { 1723 struct qla2_sgx sgx; 1724 uint32_t partial; 1725 1726 memset(&sgx, 0, sizeof(struct qla2_sgx)); 1727 sgx.tot_bytes = scsi_bufflen(cmd); 1728 sgx.cur_sg = scsi_sglist(cmd); 1729 sgx.sp = sp; 1730 1731 nseg = 0; 1732 while (qla24xx_get_one_block_sg( 1733 cmd->device->sector_size, &sgx, &partial)) 1734 nseg++; 1735 } 1736 } else 1737 nseg = 0; 1738 1739 /* number of required data segments */ 1740 tot_dsds = nseg; 1741 1742 /* Compute number of required protection segments */ 1743 if (qla24xx_configure_prot_mode(sp, &fw_prot_opts)) { 1744 nseg = dma_map_sg(&ha->pdev->dev, scsi_prot_sglist(cmd), 1745 scsi_prot_sg_count(cmd), cmd->sc_data_direction); 1746 if (unlikely(!nseg)) 1747 goto queuing_error; 1748 else 1749 sp->flags |= SRB_CRC_PROT_DMA_VALID; 1750 1751 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) || 1752 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) { 1753 nseg = scsi_bufflen(cmd) / cmd->device->sector_size; 1754 } 1755 } else { 1756 nseg = 0; 1757 } 1758 1759 req_cnt = 1; 1760 /* Total Data and protection sg segment(s) */ 1761 tot_prot_dsds = nseg; 1762 tot_dsds += nseg; 1763 if (req->cnt < (req_cnt + 2)) { 1764 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr : 1765 RD_REG_DWORD_RELAXED(req->req_q_out); 1766 if (req->ring_index < cnt) 1767 req->cnt = cnt - req->ring_index; 1768 else 1769 req->cnt = req->length - 1770 (req->ring_index - cnt); 1771 if (req->cnt < (req_cnt + 2)) 1772 goto queuing_error; 1773 } 1774 1775 status |= QDSS_GOT_Q_SPACE; 1776 1777 /* Build header part of command packet (excluding the OPCODE). */ 1778 req->current_outstanding_cmd = handle; 1779 req->outstanding_cmds[handle] = sp; 1780 sp->handle = handle; 1781 cmd->host_scribble = (unsigned char *)(unsigned long)handle; 1782 req->cnt -= req_cnt; 1783 1784 /* Fill-in common area */ 1785 cmd_pkt = (struct cmd_type_crc_2 *)req->ring_ptr; 1786 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 1787 1788 clr_ptr = (uint32_t *)cmd_pkt + 2; 1789 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 1790 1791 /* Set NPORT-ID and LUN number*/ 1792 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1793 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; 1794 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; 1795 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; 1796 1797 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun); 1798 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun)); 1799 1800 /* Total Data and protection segment(s) */ 1801 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 1802 1803 /* Build IOCB segments and adjust for data protection segments */ 1804 if (qla24xx_build_scsi_crc_2_iocbs(sp, (struct cmd_type_crc_2 *) 1805 req->ring_ptr, tot_dsds, tot_prot_dsds, fw_prot_opts) != 1806 QLA_SUCCESS) 1807 goto queuing_error; 1808 1809 cmd_pkt->entry_count = (uint8_t)req_cnt; 1810 /* Specify response queue number where completion should happen */ 1811 cmd_pkt->entry_status = (uint8_t) rsp->id; 1812 cmd_pkt->timeout = __constant_cpu_to_le16(0); 1813 wmb(); 1814 1815 /* Adjust ring index. */ 1816 req->ring_index++; 1817 if (req->ring_index == req->length) { 1818 req->ring_index = 0; 1819 req->ring_ptr = req->ring; 1820 } else 1821 req->ring_ptr++; 1822 1823 /* Set chip new ring index. */ 1824 WRT_REG_DWORD(req->req_q_in, req->ring_index); 1825 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr); 1826 1827 /* Manage unprocessed RIO/ZIO commands in response queue. */ 1828 if (vha->flags.process_response_queue && 1829 rsp->ring_ptr->signature != RESPONSE_PROCESSED) 1830 qla24xx_process_response_queue(vha, rsp); 1831 1832 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1833 1834 return QLA_SUCCESS; 1835 1836 queuing_error: 1837 if (status & QDSS_GOT_Q_SPACE) { 1838 req->outstanding_cmds[handle] = NULL; 1839 req->cnt += req_cnt; 1840 } 1841 /* Cleanup will be performed by the caller (queuecommand) */ 1842 1843 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1844 return QLA_FUNCTION_FAILED; 1845 } 1846 1847 1848 static void qla25xx_set_que(srb_t *sp, struct rsp_que **rsp) 1849 { 1850 struct scsi_cmnd *cmd = GET_CMD_SP(sp); 1851 struct qla_hw_data *ha = sp->fcport->vha->hw; 1852 int affinity = cmd->request->cpu; 1853 1854 if (ha->flags.cpu_affinity_enabled && affinity >= 0 && 1855 affinity < ha->max_rsp_queues - 1) 1856 *rsp = ha->rsp_q_map[affinity + 1]; 1857 else 1858 *rsp = ha->rsp_q_map[0]; 1859 } 1860 1861 /* Generic Control-SRB manipulation functions. */ 1862 void * 1863 qla2x00_alloc_iocbs(scsi_qla_host_t *vha, srb_t *sp) 1864 { 1865 struct qla_hw_data *ha = vha->hw; 1866 struct req_que *req = ha->req_q_map[0]; 1867 device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id); 1868 uint32_t index, handle; 1869 request_t *pkt; 1870 uint16_t cnt, req_cnt; 1871 1872 pkt = NULL; 1873 req_cnt = 1; 1874 handle = 0; 1875 1876 if (!sp) 1877 goto skip_cmd_array; 1878 1879 /* Check for room in outstanding command list. */ 1880 handle = req->current_outstanding_cmd; 1881 for (index = 1; index < req->num_outstanding_cmds; index++) { 1882 handle++; 1883 if (handle == req->num_outstanding_cmds) 1884 handle = 1; 1885 if (!req->outstanding_cmds[handle]) 1886 break; 1887 } 1888 if (index == req->num_outstanding_cmds) { 1889 ql_log(ql_log_warn, vha, 0x700b, 1890 "No room on outstanding cmd array.\n"); 1891 goto queuing_error; 1892 } 1893 1894 /* Prep command array. */ 1895 req->current_outstanding_cmd = handle; 1896 req->outstanding_cmds[handle] = sp; 1897 sp->handle = handle; 1898 1899 /* Adjust entry-counts as needed. */ 1900 if (sp->type != SRB_SCSI_CMD) 1901 req_cnt = sp->iocbs; 1902 1903 skip_cmd_array: 1904 /* Check for room on request queue. */ 1905 if (req->cnt < req_cnt) { 1906 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) 1907 cnt = RD_REG_DWORD(®->isp25mq.req_q_out); 1908 else if (IS_P3P_TYPE(ha)) 1909 cnt = RD_REG_DWORD(®->isp82.req_q_out); 1910 else if (IS_FWI2_CAPABLE(ha)) 1911 cnt = RD_REG_DWORD(®->isp24.req_q_out); 1912 else if (IS_QLAFX00(ha)) 1913 cnt = RD_REG_DWORD(®->ispfx00.req_q_out); 1914 else 1915 cnt = qla2x00_debounce_register( 1916 ISP_REQ_Q_OUT(ha, ®->isp)); 1917 1918 if (req->ring_index < cnt) 1919 req->cnt = cnt - req->ring_index; 1920 else 1921 req->cnt = req->length - 1922 (req->ring_index - cnt); 1923 } 1924 if (req->cnt < req_cnt) 1925 goto queuing_error; 1926 1927 /* Prep packet */ 1928 req->cnt -= req_cnt; 1929 pkt = req->ring_ptr; 1930 memset(pkt, 0, REQUEST_ENTRY_SIZE); 1931 if (IS_QLAFX00(ha)) { 1932 WRT_REG_BYTE((void __iomem *)&pkt->entry_count, req_cnt); 1933 WRT_REG_WORD((void __iomem *)&pkt->handle, handle); 1934 } else { 1935 pkt->entry_count = req_cnt; 1936 pkt->handle = handle; 1937 } 1938 1939 queuing_error: 1940 return pkt; 1941 } 1942 1943 static void 1944 qla24xx_login_iocb(srb_t *sp, struct logio_entry_24xx *logio) 1945 { 1946 struct srb_iocb *lio = &sp->u.iocb_cmd; 1947 1948 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; 1949 logio->control_flags = cpu_to_le16(LCF_COMMAND_PLOGI); 1950 if (lio->u.logio.flags & SRB_LOGIN_COND_PLOGI) 1951 logio->control_flags |= cpu_to_le16(LCF_COND_PLOGI); 1952 if (lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI) 1953 logio->control_flags |= cpu_to_le16(LCF_SKIP_PRLI); 1954 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1955 logio->port_id[0] = sp->fcport->d_id.b.al_pa; 1956 logio->port_id[1] = sp->fcport->d_id.b.area; 1957 logio->port_id[2] = sp->fcport->d_id.b.domain; 1958 logio->vp_index = sp->fcport->vha->vp_idx; 1959 } 1960 1961 static void 1962 qla2x00_login_iocb(srb_t *sp, struct mbx_entry *mbx) 1963 { 1964 struct qla_hw_data *ha = sp->fcport->vha->hw; 1965 struct srb_iocb *lio = &sp->u.iocb_cmd; 1966 uint16_t opts; 1967 1968 mbx->entry_type = MBX_IOCB_TYPE; 1969 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id); 1970 mbx->mb0 = cpu_to_le16(MBC_LOGIN_FABRIC_PORT); 1971 opts = lio->u.logio.flags & SRB_LOGIN_COND_PLOGI ? BIT_0 : 0; 1972 opts |= lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI ? BIT_1 : 0; 1973 if (HAS_EXTENDED_IDS(ha)) { 1974 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id); 1975 mbx->mb10 = cpu_to_le16(opts); 1976 } else { 1977 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | opts); 1978 } 1979 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain); 1980 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 | 1981 sp->fcport->d_id.b.al_pa); 1982 mbx->mb9 = cpu_to_le16(sp->fcport->vha->vp_idx); 1983 } 1984 1985 static void 1986 qla24xx_logout_iocb(srb_t *sp, struct logio_entry_24xx *logio) 1987 { 1988 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; 1989 logio->control_flags = 1990 cpu_to_le16(LCF_COMMAND_LOGO|LCF_IMPL_LOGO); 1991 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); 1992 logio->port_id[0] = sp->fcport->d_id.b.al_pa; 1993 logio->port_id[1] = sp->fcport->d_id.b.area; 1994 logio->port_id[2] = sp->fcport->d_id.b.domain; 1995 logio->vp_index = sp->fcport->vha->vp_idx; 1996 } 1997 1998 static void 1999 qla2x00_logout_iocb(srb_t *sp, struct mbx_entry *mbx) 2000 { 2001 struct qla_hw_data *ha = sp->fcport->vha->hw; 2002 2003 mbx->entry_type = MBX_IOCB_TYPE; 2004 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id); 2005 mbx->mb0 = cpu_to_le16(MBC_LOGOUT_FABRIC_PORT); 2006 mbx->mb1 = HAS_EXTENDED_IDS(ha) ? 2007 cpu_to_le16(sp->fcport->loop_id): 2008 cpu_to_le16(sp->fcport->loop_id << 8); 2009 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain); 2010 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 | 2011 sp->fcport->d_id.b.al_pa); 2012 mbx->mb9 = cpu_to_le16(sp->fcport->vha->vp_idx); 2013 /* Implicit: mbx->mbx10 = 0. */ 2014 } 2015 2016 static void 2017 qla24xx_adisc_iocb(srb_t *sp, struct logio_entry_24xx *logio) 2018 { 2019 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; 2020 logio->control_flags = cpu_to_le16(LCF_COMMAND_ADISC); 2021 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2022 logio->vp_index = sp->fcport->vha->vp_idx; 2023 } 2024 2025 static void 2026 qla2x00_adisc_iocb(srb_t *sp, struct mbx_entry *mbx) 2027 { 2028 struct qla_hw_data *ha = sp->fcport->vha->hw; 2029 2030 mbx->entry_type = MBX_IOCB_TYPE; 2031 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id); 2032 mbx->mb0 = cpu_to_le16(MBC_GET_PORT_DATABASE); 2033 if (HAS_EXTENDED_IDS(ha)) { 2034 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id); 2035 mbx->mb10 = cpu_to_le16(BIT_0); 2036 } else { 2037 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | BIT_0); 2038 } 2039 mbx->mb2 = cpu_to_le16(MSW(ha->async_pd_dma)); 2040 mbx->mb3 = cpu_to_le16(LSW(ha->async_pd_dma)); 2041 mbx->mb6 = cpu_to_le16(MSW(MSD(ha->async_pd_dma))); 2042 mbx->mb7 = cpu_to_le16(LSW(MSD(ha->async_pd_dma))); 2043 mbx->mb9 = cpu_to_le16(sp->fcport->vha->vp_idx); 2044 } 2045 2046 static void 2047 qla24xx_tm_iocb(srb_t *sp, struct tsk_mgmt_entry *tsk) 2048 { 2049 uint32_t flags; 2050 unsigned int lun; 2051 struct fc_port *fcport = sp->fcport; 2052 scsi_qla_host_t *vha = fcport->vha; 2053 struct qla_hw_data *ha = vha->hw; 2054 struct srb_iocb *iocb = &sp->u.iocb_cmd; 2055 struct req_que *req = vha->req; 2056 2057 flags = iocb->u.tmf.flags; 2058 lun = iocb->u.tmf.lun; 2059 2060 tsk->entry_type = TSK_MGMT_IOCB_TYPE; 2061 tsk->entry_count = 1; 2062 tsk->handle = MAKE_HANDLE(req->id, tsk->handle); 2063 tsk->nport_handle = cpu_to_le16(fcport->loop_id); 2064 tsk->timeout = cpu_to_le16(ha->r_a_tov / 10 * 2); 2065 tsk->control_flags = cpu_to_le32(flags); 2066 tsk->port_id[0] = fcport->d_id.b.al_pa; 2067 tsk->port_id[1] = fcport->d_id.b.area; 2068 tsk->port_id[2] = fcport->d_id.b.domain; 2069 tsk->vp_index = fcport->vha->vp_idx; 2070 2071 if (flags == TCF_LUN_RESET) { 2072 int_to_scsilun(lun, &tsk->lun); 2073 host_to_fcp_swap((uint8_t *)&tsk->lun, 2074 sizeof(tsk->lun)); 2075 } 2076 } 2077 2078 static void 2079 qla24xx_els_iocb(srb_t *sp, struct els_entry_24xx *els_iocb) 2080 { 2081 struct fc_bsg_job *bsg_job = sp->u.bsg_job; 2082 2083 els_iocb->entry_type = ELS_IOCB_TYPE; 2084 els_iocb->entry_count = 1; 2085 els_iocb->sys_define = 0; 2086 els_iocb->entry_status = 0; 2087 els_iocb->handle = sp->handle; 2088 els_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2089 els_iocb->tx_dsd_count = __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt); 2090 els_iocb->vp_index = sp->fcport->vha->vp_idx; 2091 els_iocb->sof_type = EST_SOFI3; 2092 els_iocb->rx_dsd_count = __constant_cpu_to_le16(bsg_job->reply_payload.sg_cnt); 2093 2094 els_iocb->opcode = 2095 sp->type == SRB_ELS_CMD_RPT ? 2096 bsg_job->request->rqst_data.r_els.els_code : 2097 bsg_job->request->rqst_data.h_els.command_code; 2098 els_iocb->port_id[0] = sp->fcport->d_id.b.al_pa; 2099 els_iocb->port_id[1] = sp->fcport->d_id.b.area; 2100 els_iocb->port_id[2] = sp->fcport->d_id.b.domain; 2101 els_iocb->control_flags = 0; 2102 els_iocb->rx_byte_count = 2103 cpu_to_le32(bsg_job->reply_payload.payload_len); 2104 els_iocb->tx_byte_count = 2105 cpu_to_le32(bsg_job->request_payload.payload_len); 2106 2107 els_iocb->tx_address[0] = cpu_to_le32(LSD(sg_dma_address 2108 (bsg_job->request_payload.sg_list))); 2109 els_iocb->tx_address[1] = cpu_to_le32(MSD(sg_dma_address 2110 (bsg_job->request_payload.sg_list))); 2111 els_iocb->tx_len = cpu_to_le32(sg_dma_len 2112 (bsg_job->request_payload.sg_list)); 2113 2114 els_iocb->rx_address[0] = cpu_to_le32(LSD(sg_dma_address 2115 (bsg_job->reply_payload.sg_list))); 2116 els_iocb->rx_address[1] = cpu_to_le32(MSD(sg_dma_address 2117 (bsg_job->reply_payload.sg_list))); 2118 els_iocb->rx_len = cpu_to_le32(sg_dma_len 2119 (bsg_job->reply_payload.sg_list)); 2120 2121 sp->fcport->vha->qla_stats.control_requests++; 2122 } 2123 2124 static void 2125 qla2x00_ct_iocb(srb_t *sp, ms_iocb_entry_t *ct_iocb) 2126 { 2127 uint16_t avail_dsds; 2128 uint32_t *cur_dsd; 2129 struct scatterlist *sg; 2130 int index; 2131 uint16_t tot_dsds; 2132 scsi_qla_host_t *vha = sp->fcport->vha; 2133 struct qla_hw_data *ha = vha->hw; 2134 struct fc_bsg_job *bsg_job = sp->u.bsg_job; 2135 int loop_iterartion = 0; 2136 int cont_iocb_prsnt = 0; 2137 int entry_count = 1; 2138 2139 memset(ct_iocb, 0, sizeof(ms_iocb_entry_t)); 2140 ct_iocb->entry_type = CT_IOCB_TYPE; 2141 ct_iocb->entry_status = 0; 2142 ct_iocb->handle1 = sp->handle; 2143 SET_TARGET_ID(ha, ct_iocb->loop_id, sp->fcport->loop_id); 2144 ct_iocb->status = __constant_cpu_to_le16(0); 2145 ct_iocb->control_flags = __constant_cpu_to_le16(0); 2146 ct_iocb->timeout = 0; 2147 ct_iocb->cmd_dsd_count = 2148 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt); 2149 ct_iocb->total_dsd_count = 2150 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt + 1); 2151 ct_iocb->req_bytecount = 2152 cpu_to_le32(bsg_job->request_payload.payload_len); 2153 ct_iocb->rsp_bytecount = 2154 cpu_to_le32(bsg_job->reply_payload.payload_len); 2155 2156 ct_iocb->dseg_req_address[0] = cpu_to_le32(LSD(sg_dma_address 2157 (bsg_job->request_payload.sg_list))); 2158 ct_iocb->dseg_req_address[1] = cpu_to_le32(MSD(sg_dma_address 2159 (bsg_job->request_payload.sg_list))); 2160 ct_iocb->dseg_req_length = ct_iocb->req_bytecount; 2161 2162 ct_iocb->dseg_rsp_address[0] = cpu_to_le32(LSD(sg_dma_address 2163 (bsg_job->reply_payload.sg_list))); 2164 ct_iocb->dseg_rsp_address[1] = cpu_to_le32(MSD(sg_dma_address 2165 (bsg_job->reply_payload.sg_list))); 2166 ct_iocb->dseg_rsp_length = ct_iocb->rsp_bytecount; 2167 2168 avail_dsds = 1; 2169 cur_dsd = (uint32_t *)ct_iocb->dseg_rsp_address; 2170 index = 0; 2171 tot_dsds = bsg_job->reply_payload.sg_cnt; 2172 2173 for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) { 2174 dma_addr_t sle_dma; 2175 cont_a64_entry_t *cont_pkt; 2176 2177 /* Allocate additional continuation packets? */ 2178 if (avail_dsds == 0) { 2179 /* 2180 * Five DSDs are available in the Cont. 2181 * Type 1 IOCB. 2182 */ 2183 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, 2184 vha->hw->req_q_map[0]); 2185 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address; 2186 avail_dsds = 5; 2187 cont_iocb_prsnt = 1; 2188 entry_count++; 2189 } 2190 2191 sle_dma = sg_dma_address(sg); 2192 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 2193 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 2194 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 2195 loop_iterartion++; 2196 avail_dsds--; 2197 } 2198 ct_iocb->entry_count = entry_count; 2199 2200 sp->fcport->vha->qla_stats.control_requests++; 2201 } 2202 2203 static void 2204 qla24xx_ct_iocb(srb_t *sp, struct ct_entry_24xx *ct_iocb) 2205 { 2206 uint16_t avail_dsds; 2207 uint32_t *cur_dsd; 2208 struct scatterlist *sg; 2209 int index; 2210 uint16_t tot_dsds; 2211 scsi_qla_host_t *vha = sp->fcport->vha; 2212 struct qla_hw_data *ha = vha->hw; 2213 struct fc_bsg_job *bsg_job = sp->u.bsg_job; 2214 int loop_iterartion = 0; 2215 int cont_iocb_prsnt = 0; 2216 int entry_count = 1; 2217 2218 ct_iocb->entry_type = CT_IOCB_TYPE; 2219 ct_iocb->entry_status = 0; 2220 ct_iocb->sys_define = 0; 2221 ct_iocb->handle = sp->handle; 2222 2223 ct_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2224 ct_iocb->vp_index = sp->fcport->vha->vp_idx; 2225 ct_iocb->comp_status = __constant_cpu_to_le16(0); 2226 2227 ct_iocb->cmd_dsd_count = 2228 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt); 2229 ct_iocb->timeout = 0; 2230 ct_iocb->rsp_dsd_count = 2231 __constant_cpu_to_le16(bsg_job->reply_payload.sg_cnt); 2232 ct_iocb->rsp_byte_count = 2233 cpu_to_le32(bsg_job->reply_payload.payload_len); 2234 ct_iocb->cmd_byte_count = 2235 cpu_to_le32(bsg_job->request_payload.payload_len); 2236 ct_iocb->dseg_0_address[0] = cpu_to_le32(LSD(sg_dma_address 2237 (bsg_job->request_payload.sg_list))); 2238 ct_iocb->dseg_0_address[1] = cpu_to_le32(MSD(sg_dma_address 2239 (bsg_job->request_payload.sg_list))); 2240 ct_iocb->dseg_0_len = cpu_to_le32(sg_dma_len 2241 (bsg_job->request_payload.sg_list)); 2242 2243 avail_dsds = 1; 2244 cur_dsd = (uint32_t *)ct_iocb->dseg_1_address; 2245 index = 0; 2246 tot_dsds = bsg_job->reply_payload.sg_cnt; 2247 2248 for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) { 2249 dma_addr_t sle_dma; 2250 cont_a64_entry_t *cont_pkt; 2251 2252 /* Allocate additional continuation packets? */ 2253 if (avail_dsds == 0) { 2254 /* 2255 * Five DSDs are available in the Cont. 2256 * Type 1 IOCB. 2257 */ 2258 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, 2259 ha->req_q_map[0]); 2260 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address; 2261 avail_dsds = 5; 2262 cont_iocb_prsnt = 1; 2263 entry_count++; 2264 } 2265 2266 sle_dma = sg_dma_address(sg); 2267 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 2268 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 2269 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 2270 loop_iterartion++; 2271 avail_dsds--; 2272 } 2273 ct_iocb->entry_count = entry_count; 2274 } 2275 2276 /* 2277 * qla82xx_start_scsi() - Send a SCSI command to the ISP 2278 * @sp: command to send to the ISP 2279 * 2280 * Returns non-zero if a failure occurred, else zero. 2281 */ 2282 int 2283 qla82xx_start_scsi(srb_t *sp) 2284 { 2285 int ret, nseg; 2286 unsigned long flags; 2287 struct scsi_cmnd *cmd; 2288 uint32_t *clr_ptr; 2289 uint32_t index; 2290 uint32_t handle; 2291 uint16_t cnt; 2292 uint16_t req_cnt; 2293 uint16_t tot_dsds; 2294 struct device_reg_82xx __iomem *reg; 2295 uint32_t dbval; 2296 uint32_t *fcp_dl; 2297 uint8_t additional_cdb_len; 2298 struct ct6_dsd *ctx; 2299 struct scsi_qla_host *vha = sp->fcport->vha; 2300 struct qla_hw_data *ha = vha->hw; 2301 struct req_que *req = NULL; 2302 struct rsp_que *rsp = NULL; 2303 char tag[2]; 2304 2305 /* Setup device pointers. */ 2306 ret = 0; 2307 reg = &ha->iobase->isp82; 2308 cmd = GET_CMD_SP(sp); 2309 req = vha->req; 2310 rsp = ha->rsp_q_map[0]; 2311 2312 /* So we know we haven't pci_map'ed anything yet */ 2313 tot_dsds = 0; 2314 2315 dbval = 0x04 | (ha->portnum << 5); 2316 2317 /* Send marker if required */ 2318 if (vha->marker_needed != 0) { 2319 if (qla2x00_marker(vha, req, 2320 rsp, 0, 0, MK_SYNC_ALL) != QLA_SUCCESS) { 2321 ql_log(ql_log_warn, vha, 0x300c, 2322 "qla2x00_marker failed for cmd=%p.\n", cmd); 2323 return QLA_FUNCTION_FAILED; 2324 } 2325 vha->marker_needed = 0; 2326 } 2327 2328 /* Acquire ring specific lock */ 2329 spin_lock_irqsave(&ha->hardware_lock, flags); 2330 2331 /* Check for room in outstanding command list. */ 2332 handle = req->current_outstanding_cmd; 2333 for (index = 1; index < req->num_outstanding_cmds; index++) { 2334 handle++; 2335 if (handle == req->num_outstanding_cmds) 2336 handle = 1; 2337 if (!req->outstanding_cmds[handle]) 2338 break; 2339 } 2340 if (index == req->num_outstanding_cmds) 2341 goto queuing_error; 2342 2343 /* Map the sg table so we have an accurate count of sg entries needed */ 2344 if (scsi_sg_count(cmd)) { 2345 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd), 2346 scsi_sg_count(cmd), cmd->sc_data_direction); 2347 if (unlikely(!nseg)) 2348 goto queuing_error; 2349 } else 2350 nseg = 0; 2351 2352 tot_dsds = nseg; 2353 2354 if (tot_dsds > ql2xshiftctondsd) { 2355 struct cmd_type_6 *cmd_pkt; 2356 uint16_t more_dsd_lists = 0; 2357 struct dsd_dma *dsd_ptr; 2358 uint16_t i; 2359 2360 more_dsd_lists = qla24xx_calc_dsd_lists(tot_dsds); 2361 if ((more_dsd_lists + ha->gbl_dsd_inuse) >= NUM_DSD_CHAIN) { 2362 ql_dbg(ql_dbg_io, vha, 0x300d, 2363 "Num of DSD list %d is than %d for cmd=%p.\n", 2364 more_dsd_lists + ha->gbl_dsd_inuse, NUM_DSD_CHAIN, 2365 cmd); 2366 goto queuing_error; 2367 } 2368 2369 if (more_dsd_lists <= ha->gbl_dsd_avail) 2370 goto sufficient_dsds; 2371 else 2372 more_dsd_lists -= ha->gbl_dsd_avail; 2373 2374 for (i = 0; i < more_dsd_lists; i++) { 2375 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC); 2376 if (!dsd_ptr) { 2377 ql_log(ql_log_fatal, vha, 0x300e, 2378 "Failed to allocate memory for dsd_dma " 2379 "for cmd=%p.\n", cmd); 2380 goto queuing_error; 2381 } 2382 2383 dsd_ptr->dsd_addr = dma_pool_alloc(ha->dl_dma_pool, 2384 GFP_ATOMIC, &dsd_ptr->dsd_list_dma); 2385 if (!dsd_ptr->dsd_addr) { 2386 kfree(dsd_ptr); 2387 ql_log(ql_log_fatal, vha, 0x300f, 2388 "Failed to allocate memory for dsd_addr " 2389 "for cmd=%p.\n", cmd); 2390 goto queuing_error; 2391 } 2392 list_add_tail(&dsd_ptr->list, &ha->gbl_dsd_list); 2393 ha->gbl_dsd_avail++; 2394 } 2395 2396 sufficient_dsds: 2397 req_cnt = 1; 2398 2399 if (req->cnt < (req_cnt + 2)) { 2400 cnt = (uint16_t)RD_REG_DWORD_RELAXED( 2401 ®->req_q_out[0]); 2402 if (req->ring_index < cnt) 2403 req->cnt = cnt - req->ring_index; 2404 else 2405 req->cnt = req->length - 2406 (req->ring_index - cnt); 2407 if (req->cnt < (req_cnt + 2)) 2408 goto queuing_error; 2409 } 2410 2411 ctx = sp->u.scmd.ctx = 2412 mempool_alloc(ha->ctx_mempool, GFP_ATOMIC); 2413 if (!ctx) { 2414 ql_log(ql_log_fatal, vha, 0x3010, 2415 "Failed to allocate ctx for cmd=%p.\n", cmd); 2416 goto queuing_error; 2417 } 2418 2419 memset(ctx, 0, sizeof(struct ct6_dsd)); 2420 ctx->fcp_cmnd = dma_pool_alloc(ha->fcp_cmnd_dma_pool, 2421 GFP_ATOMIC, &ctx->fcp_cmnd_dma); 2422 if (!ctx->fcp_cmnd) { 2423 ql_log(ql_log_fatal, vha, 0x3011, 2424 "Failed to allocate fcp_cmnd for cmd=%p.\n", cmd); 2425 goto queuing_error; 2426 } 2427 2428 /* Initialize the DSD list and dma handle */ 2429 INIT_LIST_HEAD(&ctx->dsd_list); 2430 ctx->dsd_use_cnt = 0; 2431 2432 if (cmd->cmd_len > 16) { 2433 additional_cdb_len = cmd->cmd_len - 16; 2434 if ((cmd->cmd_len % 4) != 0) { 2435 /* SCSI command bigger than 16 bytes must be 2436 * multiple of 4 2437 */ 2438 ql_log(ql_log_warn, vha, 0x3012, 2439 "scsi cmd len %d not multiple of 4 " 2440 "for cmd=%p.\n", cmd->cmd_len, cmd); 2441 goto queuing_error_fcp_cmnd; 2442 } 2443 ctx->fcp_cmnd_len = 12 + cmd->cmd_len + 4; 2444 } else { 2445 additional_cdb_len = 0; 2446 ctx->fcp_cmnd_len = 12 + 16 + 4; 2447 } 2448 2449 cmd_pkt = (struct cmd_type_6 *)req->ring_ptr; 2450 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 2451 2452 /* Zero out remaining portion of packet. */ 2453 /* tagged queuing modifier -- default is TSK_SIMPLE (0). */ 2454 clr_ptr = (uint32_t *)cmd_pkt + 2; 2455 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 2456 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 2457 2458 /* Set NPORT-ID and LUN number*/ 2459 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2460 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; 2461 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; 2462 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; 2463 cmd_pkt->vp_index = sp->fcport->vha->vp_idx; 2464 2465 /* Build IOCB segments */ 2466 if (qla24xx_build_scsi_type_6_iocbs(sp, cmd_pkt, tot_dsds)) 2467 goto queuing_error_fcp_cmnd; 2468 2469 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun); 2470 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun)); 2471 2472 /* build FCP_CMND IU */ 2473 memset(ctx->fcp_cmnd, 0, sizeof(struct fcp_cmnd)); 2474 int_to_scsilun(cmd->device->lun, &ctx->fcp_cmnd->lun); 2475 ctx->fcp_cmnd->additional_cdb_len = additional_cdb_len; 2476 2477 if (cmd->sc_data_direction == DMA_TO_DEVICE) 2478 ctx->fcp_cmnd->additional_cdb_len |= 1; 2479 else if (cmd->sc_data_direction == DMA_FROM_DEVICE) 2480 ctx->fcp_cmnd->additional_cdb_len |= 2; 2481 2482 /* 2483 * Update tagged queuing modifier -- default is TSK_SIMPLE (0). 2484 */ 2485 if (scsi_populate_tag_msg(cmd, tag)) { 2486 switch (tag[0]) { 2487 case HEAD_OF_QUEUE_TAG: 2488 ctx->fcp_cmnd->task_attribute = 2489 TSK_HEAD_OF_QUEUE; 2490 break; 2491 case ORDERED_QUEUE_TAG: 2492 ctx->fcp_cmnd->task_attribute = 2493 TSK_ORDERED; 2494 break; 2495 } 2496 } 2497 2498 /* Populate the FCP_PRIO. */ 2499 if (ha->flags.fcp_prio_enabled) 2500 ctx->fcp_cmnd->task_attribute |= 2501 sp->fcport->fcp_prio << 3; 2502 2503 memcpy(ctx->fcp_cmnd->cdb, cmd->cmnd, cmd->cmd_len); 2504 2505 fcp_dl = (uint32_t *)(ctx->fcp_cmnd->cdb + 16 + 2506 additional_cdb_len); 2507 *fcp_dl = htonl((uint32_t)scsi_bufflen(cmd)); 2508 2509 cmd_pkt->fcp_cmnd_dseg_len = cpu_to_le16(ctx->fcp_cmnd_len); 2510 cmd_pkt->fcp_cmnd_dseg_address[0] = 2511 cpu_to_le32(LSD(ctx->fcp_cmnd_dma)); 2512 cmd_pkt->fcp_cmnd_dseg_address[1] = 2513 cpu_to_le32(MSD(ctx->fcp_cmnd_dma)); 2514 2515 sp->flags |= SRB_FCP_CMND_DMA_VALID; 2516 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); 2517 /* Set total data segment count. */ 2518 cmd_pkt->entry_count = (uint8_t)req_cnt; 2519 /* Specify response queue number where 2520 * completion should happen 2521 */ 2522 cmd_pkt->entry_status = (uint8_t) rsp->id; 2523 } else { 2524 struct cmd_type_7 *cmd_pkt; 2525 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds); 2526 if (req->cnt < (req_cnt + 2)) { 2527 cnt = (uint16_t)RD_REG_DWORD_RELAXED( 2528 ®->req_q_out[0]); 2529 if (req->ring_index < cnt) 2530 req->cnt = cnt - req->ring_index; 2531 else 2532 req->cnt = req->length - 2533 (req->ring_index - cnt); 2534 } 2535 if (req->cnt < (req_cnt + 2)) 2536 goto queuing_error; 2537 2538 cmd_pkt = (struct cmd_type_7 *)req->ring_ptr; 2539 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 2540 2541 /* Zero out remaining portion of packet. */ 2542 /* tagged queuing modifier -- default is TSK_SIMPLE (0).*/ 2543 clr_ptr = (uint32_t *)cmd_pkt + 2; 2544 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 2545 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 2546 2547 /* Set NPORT-ID and LUN number*/ 2548 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2549 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; 2550 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; 2551 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; 2552 cmd_pkt->vp_index = sp->fcport->vha->vp_idx; 2553 2554 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun); 2555 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, 2556 sizeof(cmd_pkt->lun)); 2557 2558 /* 2559 * Update tagged queuing modifier -- default is TSK_SIMPLE (0). 2560 */ 2561 if (scsi_populate_tag_msg(cmd, tag)) { 2562 switch (tag[0]) { 2563 case HEAD_OF_QUEUE_TAG: 2564 cmd_pkt->task = TSK_HEAD_OF_QUEUE; 2565 break; 2566 case ORDERED_QUEUE_TAG: 2567 cmd_pkt->task = TSK_ORDERED; 2568 break; 2569 } 2570 } 2571 2572 /* Populate the FCP_PRIO. */ 2573 if (ha->flags.fcp_prio_enabled) 2574 cmd_pkt->task |= sp->fcport->fcp_prio << 3; 2575 2576 /* Load SCSI command packet. */ 2577 memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len); 2578 host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb)); 2579 2580 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); 2581 2582 /* Build IOCB segments */ 2583 qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds); 2584 2585 /* Set total data segment count. */ 2586 cmd_pkt->entry_count = (uint8_t)req_cnt; 2587 /* Specify response queue number where 2588 * completion should happen. 2589 */ 2590 cmd_pkt->entry_status = (uint8_t) rsp->id; 2591 2592 } 2593 /* Build command packet. */ 2594 req->current_outstanding_cmd = handle; 2595 req->outstanding_cmds[handle] = sp; 2596 sp->handle = handle; 2597 cmd->host_scribble = (unsigned char *)(unsigned long)handle; 2598 req->cnt -= req_cnt; 2599 wmb(); 2600 2601 /* Adjust ring index. */ 2602 req->ring_index++; 2603 if (req->ring_index == req->length) { 2604 req->ring_index = 0; 2605 req->ring_ptr = req->ring; 2606 } else 2607 req->ring_ptr++; 2608 2609 sp->flags |= SRB_DMA_VALID; 2610 2611 /* Set chip new ring index. */ 2612 /* write, read and verify logic */ 2613 dbval = dbval | (req->id << 8) | (req->ring_index << 16); 2614 if (ql2xdbwr) 2615 qla82xx_wr_32(ha, ha->nxdb_wr_ptr, dbval); 2616 else { 2617 WRT_REG_DWORD( 2618 (unsigned long __iomem *)ha->nxdb_wr_ptr, 2619 dbval); 2620 wmb(); 2621 while (RD_REG_DWORD((void __iomem *)ha->nxdb_rd_ptr) != dbval) { 2622 WRT_REG_DWORD( 2623 (unsigned long __iomem *)ha->nxdb_wr_ptr, 2624 dbval); 2625 wmb(); 2626 } 2627 } 2628 2629 /* Manage unprocessed RIO/ZIO commands in response queue. */ 2630 if (vha->flags.process_response_queue && 2631 rsp->ring_ptr->signature != RESPONSE_PROCESSED) 2632 qla24xx_process_response_queue(vha, rsp); 2633 2634 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2635 return QLA_SUCCESS; 2636 2637 queuing_error_fcp_cmnd: 2638 dma_pool_free(ha->fcp_cmnd_dma_pool, ctx->fcp_cmnd, ctx->fcp_cmnd_dma); 2639 queuing_error: 2640 if (tot_dsds) 2641 scsi_dma_unmap(cmd); 2642 2643 if (sp->u.scmd.ctx) { 2644 mempool_free(sp->u.scmd.ctx, ha->ctx_mempool); 2645 sp->u.scmd.ctx = NULL; 2646 } 2647 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2648 2649 return QLA_FUNCTION_FAILED; 2650 } 2651 2652 void 2653 qla24xx_abort_iocb(srb_t *sp, struct abort_entry_24xx *abt_iocb) 2654 { 2655 struct srb_iocb *aio = &sp->u.iocb_cmd; 2656 scsi_qla_host_t *vha = sp->fcport->vha; 2657 struct req_que *req = vha->req; 2658 2659 memset(abt_iocb, 0, sizeof(struct abort_entry_24xx)); 2660 abt_iocb->entry_type = ABORT_IOCB_TYPE; 2661 abt_iocb->entry_count = 1; 2662 abt_iocb->handle = cpu_to_le32(MAKE_HANDLE(req->id, sp->handle)); 2663 abt_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id); 2664 abt_iocb->handle_to_abort = 2665 cpu_to_le32(MAKE_HANDLE(req->id, aio->u.abt.cmd_hndl)); 2666 abt_iocb->port_id[0] = sp->fcport->d_id.b.al_pa; 2667 abt_iocb->port_id[1] = sp->fcport->d_id.b.area; 2668 abt_iocb->port_id[2] = sp->fcport->d_id.b.domain; 2669 abt_iocb->vp_index = vha->vp_idx; 2670 abt_iocb->req_que_no = cpu_to_le16(req->id); 2671 /* Send the command to the firmware */ 2672 wmb(); 2673 } 2674 2675 int 2676 qla2x00_start_sp(srb_t *sp) 2677 { 2678 int rval; 2679 struct qla_hw_data *ha = sp->fcport->vha->hw; 2680 void *pkt; 2681 unsigned long flags; 2682 2683 rval = QLA_FUNCTION_FAILED; 2684 spin_lock_irqsave(&ha->hardware_lock, flags); 2685 pkt = qla2x00_alloc_iocbs(sp->fcport->vha, sp); 2686 if (!pkt) { 2687 ql_log(ql_log_warn, sp->fcport->vha, 0x700c, 2688 "qla2x00_alloc_iocbs failed.\n"); 2689 goto done; 2690 } 2691 2692 rval = QLA_SUCCESS; 2693 switch (sp->type) { 2694 case SRB_LOGIN_CMD: 2695 IS_FWI2_CAPABLE(ha) ? 2696 qla24xx_login_iocb(sp, pkt) : 2697 qla2x00_login_iocb(sp, pkt); 2698 break; 2699 case SRB_LOGOUT_CMD: 2700 IS_FWI2_CAPABLE(ha) ? 2701 qla24xx_logout_iocb(sp, pkt) : 2702 qla2x00_logout_iocb(sp, pkt); 2703 break; 2704 case SRB_ELS_CMD_RPT: 2705 case SRB_ELS_CMD_HST: 2706 qla24xx_els_iocb(sp, pkt); 2707 break; 2708 case SRB_CT_CMD: 2709 IS_FWI2_CAPABLE(ha) ? 2710 qla24xx_ct_iocb(sp, pkt) : 2711 qla2x00_ct_iocb(sp, pkt); 2712 break; 2713 case SRB_ADISC_CMD: 2714 IS_FWI2_CAPABLE(ha) ? 2715 qla24xx_adisc_iocb(sp, pkt) : 2716 qla2x00_adisc_iocb(sp, pkt); 2717 break; 2718 case SRB_TM_CMD: 2719 IS_QLAFX00(ha) ? 2720 qlafx00_tm_iocb(sp, pkt) : 2721 qla24xx_tm_iocb(sp, pkt); 2722 break; 2723 case SRB_FXIOCB_DCMD: 2724 case SRB_FXIOCB_BCMD: 2725 qlafx00_fxdisc_iocb(sp, pkt); 2726 break; 2727 case SRB_ABT_CMD: 2728 IS_QLAFX00(ha) ? 2729 qlafx00_abort_iocb(sp, pkt) : 2730 qla24xx_abort_iocb(sp, pkt); 2731 break; 2732 default: 2733 break; 2734 } 2735 2736 wmb(); 2737 qla2x00_start_iocbs(sp->fcport->vha, ha->req_q_map[0]); 2738 done: 2739 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2740 return rval; 2741 } 2742 2743 static void 2744 qla25xx_build_bidir_iocb(srb_t *sp, struct scsi_qla_host *vha, 2745 struct cmd_bidir *cmd_pkt, uint32_t tot_dsds) 2746 { 2747 uint16_t avail_dsds; 2748 uint32_t *cur_dsd; 2749 uint32_t req_data_len = 0; 2750 uint32_t rsp_data_len = 0; 2751 struct scatterlist *sg; 2752 int index; 2753 int entry_count = 1; 2754 struct fc_bsg_job *bsg_job = sp->u.bsg_job; 2755 2756 /*Update entry type to indicate bidir command */ 2757 *((uint32_t *)(&cmd_pkt->entry_type)) = 2758 __constant_cpu_to_le32(COMMAND_BIDIRECTIONAL); 2759 2760 /* Set the transfer direction, in this set both flags 2761 * Also set the BD_WRAP_BACK flag, firmware will take care 2762 * assigning DID=SID for outgoing pkts. 2763 */ 2764 cmd_pkt->wr_dseg_count = cpu_to_le16(bsg_job->request_payload.sg_cnt); 2765 cmd_pkt->rd_dseg_count = cpu_to_le16(bsg_job->reply_payload.sg_cnt); 2766 cmd_pkt->control_flags = 2767 __constant_cpu_to_le16(BD_WRITE_DATA | BD_READ_DATA | 2768 BD_WRAP_BACK); 2769 2770 req_data_len = rsp_data_len = bsg_job->request_payload.payload_len; 2771 cmd_pkt->wr_byte_count = cpu_to_le32(req_data_len); 2772 cmd_pkt->rd_byte_count = cpu_to_le32(rsp_data_len); 2773 cmd_pkt->timeout = cpu_to_le16(qla2x00_get_async_timeout(vha) + 2); 2774 2775 vha->bidi_stats.transfer_bytes += req_data_len; 2776 vha->bidi_stats.io_count++; 2777 2778 vha->qla_stats.output_bytes += req_data_len; 2779 vha->qla_stats.output_requests++; 2780 2781 /* Only one dsd is available for bidirectional IOCB, remaining dsds 2782 * are bundled in continuation iocb 2783 */ 2784 avail_dsds = 1; 2785 cur_dsd = (uint32_t *)&cmd_pkt->fcp_data_dseg_address; 2786 2787 index = 0; 2788 2789 for_each_sg(bsg_job->request_payload.sg_list, sg, 2790 bsg_job->request_payload.sg_cnt, index) { 2791 dma_addr_t sle_dma; 2792 cont_a64_entry_t *cont_pkt; 2793 2794 /* Allocate additional continuation packets */ 2795 if (avail_dsds == 0) { 2796 /* Continuation type 1 IOCB can accomodate 2797 * 5 DSDS 2798 */ 2799 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req); 2800 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address; 2801 avail_dsds = 5; 2802 entry_count++; 2803 } 2804 sle_dma = sg_dma_address(sg); 2805 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 2806 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 2807 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 2808 avail_dsds--; 2809 } 2810 /* For read request DSD will always goes to continuation IOCB 2811 * and follow the write DSD. If there is room on the current IOCB 2812 * then it is added to that IOCB else new continuation IOCB is 2813 * allocated. 2814 */ 2815 for_each_sg(bsg_job->reply_payload.sg_list, sg, 2816 bsg_job->reply_payload.sg_cnt, index) { 2817 dma_addr_t sle_dma; 2818 cont_a64_entry_t *cont_pkt; 2819 2820 /* Allocate additional continuation packets */ 2821 if (avail_dsds == 0) { 2822 /* Continuation type 1 IOCB can accomodate 2823 * 5 DSDS 2824 */ 2825 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req); 2826 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address; 2827 avail_dsds = 5; 2828 entry_count++; 2829 } 2830 sle_dma = sg_dma_address(sg); 2831 *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); 2832 *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); 2833 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); 2834 avail_dsds--; 2835 } 2836 /* This value should be same as number of IOCB required for this cmd */ 2837 cmd_pkt->entry_count = entry_count; 2838 } 2839 2840 int 2841 qla2x00_start_bidir(srb_t *sp, struct scsi_qla_host *vha, uint32_t tot_dsds) 2842 { 2843 2844 struct qla_hw_data *ha = vha->hw; 2845 unsigned long flags; 2846 uint32_t handle; 2847 uint32_t index; 2848 uint16_t req_cnt; 2849 uint16_t cnt; 2850 uint32_t *clr_ptr; 2851 struct cmd_bidir *cmd_pkt = NULL; 2852 struct rsp_que *rsp; 2853 struct req_que *req; 2854 int rval = EXT_STATUS_OK; 2855 2856 rval = QLA_SUCCESS; 2857 2858 rsp = ha->rsp_q_map[0]; 2859 req = vha->req; 2860 2861 /* Send marker if required */ 2862 if (vha->marker_needed != 0) { 2863 if (qla2x00_marker(vha, req, 2864 rsp, 0, 0, MK_SYNC_ALL) != QLA_SUCCESS) 2865 return EXT_STATUS_MAILBOX; 2866 vha->marker_needed = 0; 2867 } 2868 2869 /* Acquire ring specific lock */ 2870 spin_lock_irqsave(&ha->hardware_lock, flags); 2871 2872 /* Check for room in outstanding command list. */ 2873 handle = req->current_outstanding_cmd; 2874 for (index = 1; index < req->num_outstanding_cmds; index++) { 2875 handle++; 2876 if (handle == req->num_outstanding_cmds) 2877 handle = 1; 2878 if (!req->outstanding_cmds[handle]) 2879 break; 2880 } 2881 2882 if (index == req->num_outstanding_cmds) { 2883 rval = EXT_STATUS_BUSY; 2884 goto queuing_error; 2885 } 2886 2887 /* Calculate number of IOCB required */ 2888 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds); 2889 2890 /* Check for room on request queue. */ 2891 if (req->cnt < req_cnt + 2) { 2892 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr : 2893 RD_REG_DWORD_RELAXED(req->req_q_out); 2894 if (req->ring_index < cnt) 2895 req->cnt = cnt - req->ring_index; 2896 else 2897 req->cnt = req->length - 2898 (req->ring_index - cnt); 2899 } 2900 if (req->cnt < req_cnt + 2) { 2901 rval = EXT_STATUS_BUSY; 2902 goto queuing_error; 2903 } 2904 2905 cmd_pkt = (struct cmd_bidir *)req->ring_ptr; 2906 cmd_pkt->handle = MAKE_HANDLE(req->id, handle); 2907 2908 /* Zero out remaining portion of packet. */ 2909 /* tagged queuing modifier -- default is TSK_SIMPLE (0).*/ 2910 clr_ptr = (uint32_t *)cmd_pkt + 2; 2911 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 2912 2913 /* Set NPORT-ID (of vha)*/ 2914 cmd_pkt->nport_handle = cpu_to_le16(vha->self_login_loop_id); 2915 cmd_pkt->port_id[0] = vha->d_id.b.al_pa; 2916 cmd_pkt->port_id[1] = vha->d_id.b.area; 2917 cmd_pkt->port_id[2] = vha->d_id.b.domain; 2918 2919 qla25xx_build_bidir_iocb(sp, vha, cmd_pkt, tot_dsds); 2920 cmd_pkt->entry_status = (uint8_t) rsp->id; 2921 /* Build command packet. */ 2922 req->current_outstanding_cmd = handle; 2923 req->outstanding_cmds[handle] = sp; 2924 sp->handle = handle; 2925 req->cnt -= req_cnt; 2926 2927 /* Send the command to the firmware */ 2928 wmb(); 2929 qla2x00_start_iocbs(vha, req); 2930 queuing_error: 2931 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2932 return rval; 2933 } 2934