1/*- 2 * Generic utility routines for the Common Access Method layer. 3 * 4 * SPDX-License-Identifier: BSD-2-Clause 5 * 6 * Copyright (c) 1997 Justin T. Gibbs. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions, and the following disclaimer, 14 * without modification, immediately at the beginning of the file. 15 * 2. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 22 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31#include <sys/param.h> 32#ifdef _KERNEL 33#include <sys/systm.h> 34#include <sys/kernel.h> 35#include <sys/memdesc.h> 36#include <sys/sysctl.h> 37#else /* _KERNEL */ 38#include <stdlib.h> 39#include <stdio.h> 40#include <string.h> 41#include <camlib.h> 42#endif /* _KERNEL */ 43 44#include <cam/cam.h> 45#include <cam/cam_ccb.h> 46#include <cam/scsi/scsi_all.h> 47#include <cam/scsi/smp_all.h> 48#include <sys/sbuf.h> 49 50#ifdef _KERNEL 51#include <sys/libkern.h> 52#include <machine/bus.h> 53#include <cam/cam_queue.h> 54#include <cam/cam_xpt.h> 55 56FEATURE(scbus, "SCSI devices support"); 57 58#endif 59 60static int camstatusentrycomp(const void *key, const void *member); 61 62const struct cam_status_entry cam_status_table[] = { 63 { CAM_REQ_INPROG, "CCB request is in progress" }, 64 { CAM_REQ_CMP, "CCB request completed without error" }, 65 { CAM_REQ_ABORTED, "CCB request aborted by the host" }, 66 { CAM_UA_ABORT, "Unable to abort CCB request" }, 67 { CAM_REQ_CMP_ERR, "CCB request completed with an error" }, 68 { CAM_BUSY, "CAM subsystem is busy" }, 69 { CAM_REQ_INVALID, "CCB request was invalid" }, 70 { CAM_PATH_INVALID, "Supplied Path ID is invalid" }, 71 { CAM_DEV_NOT_THERE, "Device Not Present" }, 72 { CAM_UA_TERMIO, "Unable to terminate I/O CCB request" }, 73 { CAM_SEL_TIMEOUT, "Selection Timeout" }, 74 { CAM_CMD_TIMEOUT, "Command timeout" }, 75 { CAM_SCSI_STATUS_ERROR, "SCSI Status Error" }, 76 { CAM_MSG_REJECT_REC, "Message Reject Reveived" }, 77 { CAM_SCSI_BUS_RESET, "SCSI Bus Reset Sent/Received" }, 78 { CAM_UNCOR_PARITY, "Uncorrectable parity/CRC error" }, 79 { CAM_AUTOSENSE_FAIL, "Auto-Sense Retrieval Failed" }, 80 { CAM_NO_HBA, "No HBA Detected" }, 81 { CAM_DATA_RUN_ERR, "Data Overrun error" }, 82 { CAM_UNEXP_BUSFREE, "Unexpected Bus Free" }, 83 { CAM_SEQUENCE_FAIL, "Target Bus Phase Sequence Failure" }, 84 { CAM_CCB_LEN_ERR, "CCB length supplied is inadequate" }, 85 { CAM_PROVIDE_FAIL, "Unable to provide requested capability" }, 86 { CAM_BDR_SENT, "SCSI BDR Message Sent" }, 87 { CAM_REQ_TERMIO, "CCB request terminated by the host" }, 88 { CAM_UNREC_HBA_ERROR, "Unrecoverable Host Bus Adapter Error" }, 89 { CAM_REQ_TOO_BIG, "The request was too large for this host" }, 90 { CAM_REQUEUE_REQ, "Unconditionally Re-queue Request" }, 91 { CAM_ATA_STATUS_ERROR, "ATA Status Error" }, 92 { CAM_SCSI_IT_NEXUS_LOST,"Initiator/Target Nexus Lost" }, 93 { CAM_SMP_STATUS_ERROR, "SMP Status Error" }, 94 { CAM_REQ_SOFTTIMEOUT, "Completed w/o error, but took too long" }, 95 { CAM_NVME_STATUS_ERROR, "NVME Status Error" }, 96 { CAM_IDE, "Initiator Detected Error Message Received" }, 97 { CAM_RESRC_UNAVAIL, "Resource Unavailable" }, 98 { CAM_UNACKED_EVENT, "Unacknowledged Event by Host" }, 99 { CAM_MESSAGE_RECV, "Message Received in Host Target Mode" }, 100 { CAM_INVALID_CDB, "Invalid CDB received in Host Target Mode" }, 101 { CAM_LUN_INVALID, "Invalid Lun" }, 102 { CAM_TID_INVALID, "Invalid Target ID" }, 103 { CAM_FUNC_NOTAVAIL, "Function Not Available" }, 104 { CAM_NO_NEXUS, "Nexus Not Established" }, 105 { CAM_IID_INVALID, "Invalid Initiator ID" }, 106 { CAM_CDB_RECVD, "CDB Received" }, 107 { CAM_LUN_ALRDY_ENA, "LUN Already Enabled for Target Mode" }, 108 { CAM_SCSI_BUSY, "SCSI Bus Busy" }, 109}; 110 111#ifdef _KERNEL 112SYSCTL_NODE(_kern, OID_AUTO, cam, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 113 "CAM Subsystem"); 114 115#ifndef CAM_DEFAULT_SORT_IO_QUEUES 116#define CAM_DEFAULT_SORT_IO_QUEUES 1 117#endif 118 119int cam_sort_io_queues = CAM_DEFAULT_SORT_IO_QUEUES; 120SYSCTL_INT(_kern_cam, OID_AUTO, sort_io_queues, CTLFLAG_RWTUN, 121 &cam_sort_io_queues, 0, "Sort IO queues to try and optimise disk access patterns"); 122#endif 123 124void 125cam_strvis(uint8_t *dst, const uint8_t *src, int srclen, int dstlen) 126{ 127 cam_strvis_flag(dst, src, srclen, dstlen, 128 CAM_STRVIS_FLAG_NONASCII_ESC); 129} 130 131void 132cam_strvis_flag(uint8_t *dst, const uint8_t *src, int srclen, int dstlen, 133 uint32_t flags) 134{ 135 struct sbuf sb; 136 137 sbuf_new(&sb, dst, dstlen, SBUF_FIXEDLEN); 138 cam_strvis_sbuf(&sb, src, srclen, flags); 139 sbuf_finish(&sb); 140} 141 142void 143cam_strvis_sbuf(struct sbuf *sb, const uint8_t *src, int srclen, 144 uint32_t flags) 145{ 146 147 /* Trim leading/trailing spaces, nulls. */ 148 while (srclen > 0 && src[0] == ' ') 149 src++, srclen--; 150 while (srclen > 0 151 && (src[srclen-1] == ' ' || src[srclen-1] == '\0')) 152 srclen--; 153 154 while (srclen > 0) { 155 if (*src < 0x20 || *src >= 0x80) { 156 /* SCSI-II Specifies that these should never occur. */ 157 /* non-printable character */ 158 switch (flags & CAM_STRVIS_FLAG_NONASCII_MASK) { 159 case CAM_STRVIS_FLAG_NONASCII_ESC: 160 sbuf_printf(sb, "\\%c%c%c", 161 ((*src & 0300) >> 6) + '0', 162 ((*src & 0070) >> 3) + '0', 163 ((*src & 0007) >> 0) + '0'); 164 break; 165 case CAM_STRVIS_FLAG_NONASCII_RAW: 166 /* 167 * If we run into a NUL, just transform it 168 * into a space. 169 */ 170 if (*src != 0x00) 171 sbuf_putc(sb, *src); 172 else 173 sbuf_putc(sb, ' '); 174 break; 175 case CAM_STRVIS_FLAG_NONASCII_SPC: 176 sbuf_putc(sb, ' '); 177 break; 178 case CAM_STRVIS_FLAG_NONASCII_TRIM: 179 default: 180 break; 181 } 182 } else { 183 /* normal character */ 184 sbuf_putc(sb, *src); 185 } 186 src++; 187 srclen--; 188 } 189} 190 191/* 192 * Compare string with pattern, returning 0 on match. 193 * Short pattern matches trailing blanks in name, 194 * Shell globbing rules apply: * matches 0 or more characters, 195 * ? matchces one character, [...] denotes a set to match one char, 196 * [^...] denotes a complimented set to match one character. 197 * Spaces in str used to match anything in the pattern string 198 * but was removed because it's a bug. No current patterns require 199 * it, as far as I know, but it's impossible to know what drives 200 * returned. 201 * 202 * Each '*' generates recursion, so keep the number of * in check. 203 */ 204int 205cam_strmatch(const uint8_t *str, const uint8_t *pattern, int str_len) 206{ 207 208 while (*pattern != '\0' && str_len > 0) { 209 if (*pattern == '*') { 210 pattern++; 211 if (*pattern == '\0') 212 return (0); 213 do { 214 if (cam_strmatch(str, pattern, str_len) == 0) 215 return (0); 216 str++; 217 str_len--; 218 } while (str_len > 0); 219 return (1); 220 } else if (*pattern == '[') { 221 int negate_range, ok; 222 uint8_t pc = UCHAR_MAX; 223 uint8_t sc; 224 225 ok = 0; 226 sc = *str++; 227 str_len--; 228 pattern++; 229 if ((negate_range = (*pattern == '^')) != 0) 230 pattern++; 231 while ((*pattern != ']') && *pattern != '\0') { 232 if (*pattern == '-') { 233 if (pattern[1] == '\0') /* Bad pattern */ 234 return (1); 235 if (sc >= pc && sc <= pattern[1]) 236 ok = 1; 237 pattern++; 238 } else if (*pattern == sc) 239 ok = 1; 240 pc = *pattern; 241 pattern++; 242 } 243 if (ok == negate_range) 244 return (1); 245 pattern++; 246 } else if (*pattern == '?') { 247 /* 248 * NB: || *str == ' ' of the old code is a bug and was 249 * removed. If you add it back, keep this the last if 250 * before the naked else */ 251 pattern++; 252 str++; 253 str_len--; 254 } else { 255 if (*str != *pattern) 256 return (1); 257 pattern++; 258 str++; 259 str_len--; 260 } 261 } 262 263 /* '*' is allowed to match nothing, so gobble it */ 264 while (*pattern == '*') 265 pattern++; 266 267 if ( *pattern != '\0') { 268 /* Pattern not fully consumed. Not a match */ 269 return (1); 270 } 271 272 /* Eat trailing spaces, which get added by SAT */ 273 while (str_len > 0 && *str == ' ') { 274 str++; 275 str_len--; 276 } 277 278 return (str_len); 279} 280 281caddr_t 282cam_quirkmatch(caddr_t target, caddr_t quirk_table, int num_entries, 283 int entry_size, cam_quirkmatch_t *comp_func) 284{ 285 for (; num_entries > 0; num_entries--, quirk_table += entry_size) { 286 if ((*comp_func)(target, quirk_table) == 0) 287 return (quirk_table); 288 } 289 return (NULL); 290} 291 292const struct cam_status_entry* 293cam_fetch_status_entry(cam_status status) 294{ 295 status &= CAM_STATUS_MASK; 296 return (bsearch(&status, &cam_status_table, 297 nitems(cam_status_table), 298 sizeof(*cam_status_table), 299 camstatusentrycomp)); 300} 301 302static int 303camstatusentrycomp(const void *key, const void *member) 304{ 305 cam_status status; 306 const struct cam_status_entry *table_entry; 307 308 status = *(const cam_status *)key; 309 table_entry = (const struct cam_status_entry *)member; 310 311 return (status - table_entry->status_code); 312} 313 314#ifdef _KERNEL 315char * 316cam_error_string(union ccb *ccb, char *str, int str_len, 317 cam_error_string_flags flags, 318 cam_error_proto_flags proto_flags) 319#else /* !_KERNEL */ 320char * 321cam_error_string(struct cam_device *device, union ccb *ccb, char *str, 322 int str_len, cam_error_string_flags flags, 323 cam_error_proto_flags proto_flags) 324#endif /* _KERNEL/!_KERNEL */ 325{ 326 char path_str[64]; 327 struct sbuf sb; 328 329 if ((ccb == NULL) 330 || (str == NULL) 331 || (str_len <= 0)) 332 return(NULL); 333 334 if (flags == CAM_ESF_NONE) 335 return(NULL); 336 337 switch (ccb->ccb_h.func_code) { 338 case XPT_ATA_IO: 339 switch (proto_flags & CAM_EPF_LEVEL_MASK) { 340 case CAM_EPF_NONE: 341 break; 342 case CAM_EPF_ALL: 343 case CAM_EPF_NORMAL: 344 proto_flags |= CAM_EAF_PRINT_RESULT; 345 /* FALLTHROUGH */ 346 case CAM_EPF_MINIMAL: 347 proto_flags |= CAM_EAF_PRINT_STATUS; 348 /* FALLTHROUGH */ 349 default: 350 break; 351 } 352 break; 353 case XPT_SCSI_IO: 354 switch (proto_flags & CAM_EPF_LEVEL_MASK) { 355 case CAM_EPF_NONE: 356 break; 357 case CAM_EPF_ALL: 358 case CAM_EPF_NORMAL: 359 proto_flags |= CAM_ESF_PRINT_SENSE; 360 /* FALLTHROUGH */ 361 case CAM_EPF_MINIMAL: 362 proto_flags |= CAM_ESF_PRINT_STATUS; 363 /* FALLTHROUGH */ 364 default: 365 break; 366 } 367 break; 368 case XPT_SMP_IO: 369 switch (proto_flags & CAM_EPF_LEVEL_MASK) { 370 case CAM_EPF_NONE: 371 break; 372 case CAM_EPF_ALL: 373 proto_flags |= CAM_ESMF_PRINT_FULL_CMD; 374 /* FALLTHROUGH */ 375 case CAM_EPF_NORMAL: 376 case CAM_EPF_MINIMAL: 377 proto_flags |= CAM_ESMF_PRINT_STATUS; 378 /* FALLTHROUGH */ 379 default: 380 break; 381 } 382 break; 383 default: 384 break; 385 } 386#ifdef _KERNEL 387 xpt_path_string(ccb->csio.ccb_h.path, path_str, sizeof(path_str)); 388#else /* !_KERNEL */ 389 cam_path_string(device, path_str, sizeof(path_str)); 390#endif /* _KERNEL/!_KERNEL */ 391 392 sbuf_new(&sb, str, str_len, 0); 393 394 if (flags & CAM_ESF_COMMAND) { 395 sbuf_cat(&sb, path_str); 396 switch (ccb->ccb_h.func_code) { 397 case XPT_ATA_IO: 398 ata_command_sbuf(&ccb->ataio, &sb); 399 break; 400 case XPT_SCSI_IO: 401#ifdef _KERNEL 402 scsi_command_string(&ccb->csio, &sb); 403#else /* !_KERNEL */ 404 scsi_command_string(device, &ccb->csio, &sb); 405#endif /* _KERNEL/!_KERNEL */ 406 break; 407 case XPT_SMP_IO: 408 smp_command_sbuf(&ccb->smpio, &sb, path_str, 79 - 409 strlen(path_str), (proto_flags & 410 CAM_ESMF_PRINT_FULL_CMD) ? 79 : 0); 411 break; 412 case XPT_NVME_IO: 413 case XPT_NVME_ADMIN: 414 nvme_command_sbuf(&ccb->nvmeio, &sb); 415 break; 416 default: 417 sbuf_printf(&sb, "CAM func %#x", 418 ccb->ccb_h.func_code); 419 break; 420 } 421 sbuf_putc(&sb, '\n'); 422 } 423 424 if (flags & CAM_ESF_CAM_STATUS) { 425 cam_status status; 426 const struct cam_status_entry *entry; 427 428 sbuf_cat(&sb, path_str); 429 430 status = ccb->ccb_h.status & CAM_STATUS_MASK; 431 432 entry = cam_fetch_status_entry(status); 433 434 if (entry == NULL) 435 sbuf_printf(&sb, "CAM status: Unknown (%#x)\n", 436 ccb->ccb_h.status); 437 else 438 sbuf_printf(&sb, "CAM status: %s\n", 439 entry->status_text); 440 } 441 442 if (flags & CAM_ESF_PROTO_STATUS) { 443 444 switch (ccb->ccb_h.func_code) { 445 case XPT_ATA_IO: 446 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != 447 CAM_ATA_STATUS_ERROR) 448 break; 449 if (proto_flags & CAM_EAF_PRINT_STATUS) { 450 sbuf_cat(&sb, path_str); 451 ata_status_sbuf(&ccb->ataio, &sb); 452 sbuf_putc(&sb, '\n'); 453 } 454 if (proto_flags & CAM_EAF_PRINT_RESULT) { 455 sbuf_cat(&sb, path_str); 456 sbuf_cat(&sb, "RES: "); 457 ata_res_sbuf(&ccb->ataio.res, &sb); 458 sbuf_putc(&sb, '\n'); 459 } 460 461 break; 462 case XPT_SCSI_IO: 463 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != 464 CAM_SCSI_STATUS_ERROR) 465 break; 466 467 if (proto_flags & CAM_ESF_PRINT_STATUS) { 468 sbuf_cat(&sb, path_str); 469 sbuf_printf(&sb, "SCSI status: %s\n", 470 scsi_status_string(&ccb->csio)); 471 } 472 473 if ((proto_flags & CAM_ESF_PRINT_SENSE) 474 && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND) 475 && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)) { 476#ifdef _KERNEL 477 scsi_sense_sbuf(&ccb->csio, &sb, 478 SSS_FLAG_NONE); 479#else /* !_KERNEL */ 480 scsi_sense_sbuf(device, &ccb->csio, &sb, 481 SSS_FLAG_NONE); 482#endif /* _KERNEL/!_KERNEL */ 483 } 484 break; 485 case XPT_SMP_IO: 486 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != 487 CAM_SMP_STATUS_ERROR) 488 break; 489 490 if (proto_flags & CAM_ESF_PRINT_STATUS) { 491 sbuf_cat(&sb, path_str); 492 sbuf_printf(&sb, "SMP status: %s (%#x)\n", 493 smp_error_desc(ccb->smpio.smp_response[2]), 494 ccb->smpio.smp_response[2]); 495 } 496 /* There is no SMP equivalent to SCSI sense. */ 497 break; 498 default: 499 break; 500 } 501 } 502 503 sbuf_finish(&sb); 504 505 return(sbuf_data(&sb)); 506} 507 508#ifdef _KERNEL 509 510void 511cam_error_print(union ccb *ccb, cam_error_string_flags flags, 512 cam_error_proto_flags proto_flags) 513{ 514 char str[512]; 515 516 printf("%s", cam_error_string(ccb, str, sizeof(str), flags, 517 proto_flags)); 518} 519 520#else /* !_KERNEL */ 521 522void 523cam_error_print(struct cam_device *device, union ccb *ccb, 524 cam_error_string_flags flags, cam_error_proto_flags proto_flags, 525 FILE *ofile) 526{ 527 char str[512]; 528 529 if ((device == NULL) || (ccb == NULL) || (ofile == NULL)) 530 return; 531 532 fprintf(ofile, "%s", cam_error_string(device, ccb, str, sizeof(str), 533 flags, proto_flags)); 534} 535 536#endif /* _KERNEL/!_KERNEL */ 537 538/* 539 * Common calculate geometry fuction 540 * 541 * Caller should set ccg->volume_size and block_size. 542 * The extended parameter should be zero if extended translation 543 * should not be used. 544 */ 545void 546cam_calc_geometry(struct ccb_calc_geometry *ccg, int extended) 547{ 548 uint32_t size_mb, secs_per_cylinder; 549 550 if (ccg->block_size == 0) { 551 ccg->ccb_h.status = CAM_REQ_CMP_ERR; 552 return; 553 } 554 size_mb = (1024L * 1024L) / ccg->block_size; 555 if (size_mb == 0) { 556 ccg->ccb_h.status = CAM_REQ_CMP_ERR; 557 return; 558 } 559 size_mb = ccg->volume_size / size_mb; 560 if (size_mb > 1024 && extended) { 561 ccg->heads = 255; 562 ccg->secs_per_track = 63; 563 } else { 564 ccg->heads = 64; 565 ccg->secs_per_track = 32; 566 } 567 secs_per_cylinder = ccg->heads * ccg->secs_per_track; 568 if (secs_per_cylinder == 0) { 569 ccg->ccb_h.status = CAM_REQ_CMP_ERR; 570 return; 571 } 572 ccg->cylinders = ccg->volume_size / secs_per_cylinder; 573 ccg->ccb_h.status = CAM_REQ_CMP; 574} 575 576#ifdef _KERNEL 577struct memdesc 578memdesc_ccb(union ccb *ccb) 579{ 580 struct ccb_hdr *ccb_h; 581 void *data_ptr; 582 uint32_t dxfer_len; 583 uint16_t sglist_cnt; 584 585 ccb_h = &ccb->ccb_h; 586 switch (ccb_h->func_code) { 587 case XPT_SCSI_IO: { 588 struct ccb_scsiio *csio; 589 590 csio = &ccb->csio; 591 data_ptr = csio->data_ptr; 592 dxfer_len = csio->dxfer_len; 593 sglist_cnt = csio->sglist_cnt; 594 break; 595 } 596 case XPT_CONT_TARGET_IO: { 597 struct ccb_scsiio *ctio; 598 599 ctio = &ccb->ctio; 600 data_ptr = ctio->data_ptr; 601 dxfer_len = ctio->dxfer_len; 602 sglist_cnt = ctio->sglist_cnt; 603 break; 604 } 605 case XPT_ATA_IO: { 606 struct ccb_ataio *ataio; 607 608 ataio = &ccb->ataio; 609 data_ptr = ataio->data_ptr; 610 dxfer_len = ataio->dxfer_len; 611 sglist_cnt = 0; 612 break; 613 } 614 case XPT_NVME_IO: 615 case XPT_NVME_ADMIN: { 616 struct ccb_nvmeio *nvmeio; 617 618 nvmeio = &ccb->nvmeio; 619 data_ptr = nvmeio->data_ptr; 620 dxfer_len = nvmeio->dxfer_len; 621 sglist_cnt = nvmeio->sglist_cnt; 622 break; 623 } 624 default: 625 panic("%s: Unsupported func code %d", __func__, 626 ccb_h->func_code); 627 } 628 629 switch ((ccb_h->flags & CAM_DATA_MASK)) { 630 case CAM_DATA_VADDR: 631 return (memdesc_vaddr(data_ptr, dxfer_len)); 632 case CAM_DATA_PADDR: 633 return (memdesc_paddr((vm_paddr_t)(uintptr_t)data_ptr, 634 dxfer_len)); 635 case CAM_DATA_SG: 636 return (memdesc_vlist(data_ptr, sglist_cnt)); 637 case CAM_DATA_SG_PADDR: 638 return (memdesc_plist(data_ptr, sglist_cnt)); 639 case CAM_DATA_BIO: 640 return (memdesc_bio(data_ptr)); 641 default: 642 panic("%s: flags 0x%X unimplemented", __func__, ccb_h->flags); 643 } 644} 645 646int 647bus_dmamap_load_ccb(bus_dma_tag_t dmat, bus_dmamap_t map, union ccb *ccb, 648 bus_dmamap_callback_t *callback, void *callback_arg, 649 int flags) 650{ 651 struct ccb_hdr *ccb_h; 652 struct memdesc mem; 653 654 ccb_h = &ccb->ccb_h; 655 if ((ccb_h->flags & CAM_DIR_MASK) == CAM_DIR_NONE) { 656 callback(callback_arg, NULL, 0, 0); 657 return (0); 658 } 659 660 mem = memdesc_ccb(ccb); 661 return (bus_dmamap_load_mem(dmat, map, &mem, callback, callback_arg, 662 flags)); 663} 664#endif 665