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 56 FEATURE(scbus, "SCSI devices support"); 57 58 #endif 59 60 static int camstatusentrycomp(const void *key, const void *member); 61 62 const 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_IDE, "Initiator Detected Error Message Received" }, 95 { CAM_RESRC_UNAVAIL, "Resource Unavailable" }, 96 { CAM_UNACKED_EVENT, "Unacknowledged Event by Host" }, 97 { CAM_MESSAGE_RECV, "Message Received in Host Target Mode" }, 98 { CAM_INVALID_CDB, "Invalid CDB received in Host Target Mode" }, 99 { CAM_LUN_INVALID, "Invalid Lun" }, 100 { CAM_TID_INVALID, "Invalid Target ID" }, 101 { CAM_FUNC_NOTAVAIL, "Function Not Available" }, 102 { CAM_NO_NEXUS, "Nexus Not Established" }, 103 { CAM_IID_INVALID, "Invalid Initiator ID" }, 104 { CAM_CDB_RECVD, "CDB Received" }, 105 { CAM_LUN_ALRDY_ENA, "LUN Already Enabled for Target Mode" }, 106 { CAM_SCSI_BUSY, "SCSI Bus Busy" }, 107 }; 108 109 #ifdef _KERNEL 110 SYSCTL_NODE(_kern, OID_AUTO, cam, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 111 "CAM Subsystem"); 112 113 #ifndef CAM_DEFAULT_SORT_IO_QUEUES 114 #define CAM_DEFAULT_SORT_IO_QUEUES 1 115 #endif 116 117 int cam_sort_io_queues = CAM_DEFAULT_SORT_IO_QUEUES; 118 SYSCTL_INT(_kern_cam, OID_AUTO, sort_io_queues, CTLFLAG_RWTUN, 119 &cam_sort_io_queues, 0, "Sort IO queues to try and optimise disk access patterns"); 120 #endif 121 122 void 123 cam_strvis(uint8_t *dst, const uint8_t *src, int srclen, int dstlen) 124 { 125 cam_strvis_flag(dst, src, srclen, dstlen, 126 CAM_STRVIS_FLAG_NONASCII_ESC); 127 } 128 129 void 130 cam_strvis_flag(uint8_t *dst, const uint8_t *src, int srclen, int dstlen, 131 uint32_t flags) 132 { 133 struct sbuf sb; 134 135 sbuf_new(&sb, dst, dstlen, SBUF_FIXEDLEN); 136 cam_strvis_sbuf(&sb, src, srclen, flags); 137 sbuf_finish(&sb); 138 } 139 140 void 141 cam_strvis_sbuf(struct sbuf *sb, const uint8_t *src, int srclen, 142 uint32_t flags) 143 { 144 145 /* Trim leading/trailing spaces, nulls. */ 146 while (srclen > 0 && src[0] == ' ') 147 src++, srclen--; 148 while (srclen > 0 149 && (src[srclen-1] == ' ' || src[srclen-1] == '\0')) 150 srclen--; 151 152 while (srclen > 0) { 153 if (*src < 0x20 || *src >= 0x80) { 154 /* SCSI-II Specifies that these should never occur. */ 155 /* non-printable character */ 156 switch (flags & CAM_STRVIS_FLAG_NONASCII_MASK) { 157 case CAM_STRVIS_FLAG_NONASCII_ESC: 158 sbuf_printf(sb, "\\%c%c%c", 159 ((*src & 0300) >> 6) + '0', 160 ((*src & 0070) >> 3) + '0', 161 ((*src & 0007) >> 0) + '0'); 162 break; 163 case CAM_STRVIS_FLAG_NONASCII_RAW: 164 /* 165 * If we run into a NUL, just transform it 166 * into a space. 167 */ 168 if (*src != 0x00) 169 sbuf_putc(sb, *src); 170 else 171 sbuf_putc(sb, ' '); 172 break; 173 case CAM_STRVIS_FLAG_NONASCII_SPC: 174 sbuf_putc(sb, ' '); 175 break; 176 case CAM_STRVIS_FLAG_NONASCII_TRIM: 177 default: 178 break; 179 } 180 } else { 181 /* normal character */ 182 sbuf_putc(sb, *src); 183 } 184 src++; 185 srclen--; 186 } 187 } 188 189 /* 190 * Compare string with pattern, returning 0 on match. 191 * Short pattern matches trailing blanks in name, 192 * Shell globbing rules apply: * matches 0 or more characters, 193 * ? matchces one character, [...] denotes a set to match one char, 194 * [^...] denotes a complimented set to match one character. 195 * Spaces in str used to match anything in the pattern string 196 * but was removed because it's a bug. No current patterns require 197 * it, as far as I know, but it's impossible to know what drives 198 * returned. 199 * 200 * Each '*' generates recursion, so keep the number of * in check. 201 */ 202 int 203 cam_strmatch(const uint8_t *str, const uint8_t *pattern, int str_len) 204 { 205 206 while (*pattern != '\0' && str_len > 0) { 207 if (*pattern == '*') { 208 pattern++; 209 if (*pattern == '\0') 210 return (0); 211 do { 212 if (cam_strmatch(str, pattern, str_len) == 0) 213 return (0); 214 str++; 215 str_len--; 216 } while (str_len > 0); 217 return (1); 218 } else if (*pattern == '[') { 219 int negate_range, ok; 220 uint8_t pc = UCHAR_MAX; 221 uint8_t sc; 222 223 ok = 0; 224 sc = *str++; 225 str_len--; 226 pattern++; 227 if ((negate_range = (*pattern == '^')) != 0) 228 pattern++; 229 while ((*pattern != ']') && *pattern != '\0') { 230 if (*pattern == '-') { 231 if (pattern[1] == '\0') /* Bad pattern */ 232 return (1); 233 if (sc >= pc && sc <= pattern[1]) 234 ok = 1; 235 pattern++; 236 } else if (*pattern == sc) 237 ok = 1; 238 pc = *pattern; 239 pattern++; 240 } 241 if (ok == negate_range) 242 return (1); 243 pattern++; 244 } else if (*pattern == '?') { 245 /* 246 * NB: || *str == ' ' of the old code is a bug and was 247 * removed. If you add it back, keep this the last if 248 * before the naked else */ 249 pattern++; 250 str++; 251 str_len--; 252 } else { 253 if (*str != *pattern) 254 return (1); 255 pattern++; 256 str++; 257 str_len--; 258 } 259 } 260 261 /* '*' is allowed to match nothing, so gobble it */ 262 while (*pattern == '*') 263 pattern++; 264 265 if ( *pattern != '\0') { 266 /* Pattern not fully consumed. Not a match */ 267 return (1); 268 } 269 270 /* Eat trailing spaces, which get added by SAT */ 271 while (str_len > 0 && *str == ' ') { 272 str++; 273 str_len--; 274 } 275 276 return (str_len); 277 } 278 279 caddr_t 280 cam_quirkmatch(caddr_t target, caddr_t quirk_table, int num_entries, 281 int entry_size, cam_quirkmatch_t *comp_func) 282 { 283 for (; num_entries > 0; num_entries--, quirk_table += entry_size) { 284 if ((*comp_func)(target, quirk_table) == 0) 285 return (quirk_table); 286 } 287 return (NULL); 288 } 289 290 const struct cam_status_entry* 291 cam_fetch_status_entry(cam_status status) 292 { 293 status &= CAM_STATUS_MASK; 294 return (bsearch(&status, &cam_status_table, 295 nitems(cam_status_table), 296 sizeof(*cam_status_table), 297 camstatusentrycomp)); 298 } 299 300 static int 301 camstatusentrycomp(const void *key, const void *member) 302 { 303 cam_status status; 304 const struct cam_status_entry *table_entry; 305 306 status = *(const cam_status *)key; 307 table_entry = (const struct cam_status_entry *)member; 308 309 return (status - table_entry->status_code); 310 } 311 312 #ifdef _KERNEL 313 char * 314 cam_error_string(union ccb *ccb, char *str, int str_len, 315 cam_error_string_flags flags, 316 cam_error_proto_flags proto_flags) 317 #else /* !_KERNEL */ 318 char * 319 cam_error_string(struct cam_device *device, union ccb *ccb, char *str, 320 int str_len, cam_error_string_flags flags, 321 cam_error_proto_flags proto_flags) 322 #endif /* _KERNEL/!_KERNEL */ 323 { 324 char path_str[64]; 325 struct sbuf sb; 326 327 if ((ccb == NULL) 328 || (str == NULL) 329 || (str_len <= 0)) 330 return(NULL); 331 332 if (flags == CAM_ESF_NONE) 333 return(NULL); 334 335 switch (ccb->ccb_h.func_code) { 336 case XPT_ATA_IO: 337 switch (proto_flags & CAM_EPF_LEVEL_MASK) { 338 case CAM_EPF_NONE: 339 break; 340 case CAM_EPF_ALL: 341 case CAM_EPF_NORMAL: 342 proto_flags |= CAM_EAF_PRINT_RESULT; 343 /* FALLTHROUGH */ 344 case CAM_EPF_MINIMAL: 345 proto_flags |= CAM_EAF_PRINT_STATUS; 346 /* FALLTHROUGH */ 347 default: 348 break; 349 } 350 break; 351 case XPT_SCSI_IO: 352 switch (proto_flags & CAM_EPF_LEVEL_MASK) { 353 case CAM_EPF_NONE: 354 break; 355 case CAM_EPF_ALL: 356 case CAM_EPF_NORMAL: 357 proto_flags |= CAM_ESF_PRINT_SENSE; 358 /* FALLTHROUGH */ 359 case CAM_EPF_MINIMAL: 360 proto_flags |= CAM_ESF_PRINT_STATUS; 361 /* FALLTHROUGH */ 362 default: 363 break; 364 } 365 break; 366 case XPT_SMP_IO: 367 switch (proto_flags & CAM_EPF_LEVEL_MASK) { 368 case CAM_EPF_NONE: 369 break; 370 case CAM_EPF_ALL: 371 proto_flags |= CAM_ESMF_PRINT_FULL_CMD; 372 /* FALLTHROUGH */ 373 case CAM_EPF_NORMAL: 374 case CAM_EPF_MINIMAL: 375 proto_flags |= CAM_ESMF_PRINT_STATUS; 376 /* FALLTHROUGH */ 377 default: 378 break; 379 } 380 break; 381 default: 382 break; 383 } 384 #ifdef _KERNEL 385 xpt_path_string(ccb->csio.ccb_h.path, path_str, sizeof(path_str)); 386 #else /* !_KERNEL */ 387 cam_path_string(device, path_str, sizeof(path_str)); 388 #endif /* _KERNEL/!_KERNEL */ 389 390 sbuf_new(&sb, str, str_len, 0); 391 392 if (flags & CAM_ESF_COMMAND) { 393 sbuf_cat(&sb, path_str); 394 switch (ccb->ccb_h.func_code) { 395 case XPT_ATA_IO: 396 ata_command_sbuf(&ccb->ataio, &sb); 397 break; 398 case XPT_SCSI_IO: 399 #ifdef _KERNEL 400 scsi_command_string(&ccb->csio, &sb); 401 #else /* !_KERNEL */ 402 scsi_command_string(device, &ccb->csio, &sb); 403 #endif /* _KERNEL/!_KERNEL */ 404 break; 405 case XPT_SMP_IO: 406 smp_command_sbuf(&ccb->smpio, &sb, path_str, 79 - 407 strlen(path_str), (proto_flags & 408 CAM_ESMF_PRINT_FULL_CMD) ? 79 : 0); 409 break; 410 case XPT_NVME_IO: 411 case XPT_NVME_ADMIN: 412 nvme_command_sbuf(&ccb->nvmeio, &sb); 413 break; 414 default: 415 sbuf_printf(&sb, "CAM func %#x", 416 ccb->ccb_h.func_code); 417 break; 418 } 419 sbuf_printf(&sb, "\n"); 420 } 421 422 if (flags & CAM_ESF_CAM_STATUS) { 423 cam_status status; 424 const struct cam_status_entry *entry; 425 426 sbuf_cat(&sb, path_str); 427 428 status = ccb->ccb_h.status & CAM_STATUS_MASK; 429 430 entry = cam_fetch_status_entry(status); 431 432 if (entry == NULL) 433 sbuf_printf(&sb, "CAM status: Unknown (%#x)\n", 434 ccb->ccb_h.status); 435 else 436 sbuf_printf(&sb, "CAM status: %s\n", 437 entry->status_text); 438 } 439 440 if (flags & CAM_ESF_PROTO_STATUS) { 441 442 switch (ccb->ccb_h.func_code) { 443 case XPT_ATA_IO: 444 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != 445 CAM_ATA_STATUS_ERROR) 446 break; 447 if (proto_flags & CAM_EAF_PRINT_STATUS) { 448 sbuf_cat(&sb, path_str); 449 ata_status_sbuf(&ccb->ataio, &sb); 450 sbuf_printf(&sb, "\n"); 451 } 452 if (proto_flags & CAM_EAF_PRINT_RESULT) { 453 sbuf_cat(&sb, path_str); 454 sbuf_printf(&sb, "RES: "); 455 ata_res_sbuf(&ccb->ataio.res, &sb); 456 sbuf_printf(&sb, "\n"); 457 } 458 459 break; 460 case XPT_SCSI_IO: 461 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != 462 CAM_SCSI_STATUS_ERROR) 463 break; 464 465 if (proto_flags & CAM_ESF_PRINT_STATUS) { 466 sbuf_cat(&sb, path_str); 467 sbuf_printf(&sb, "SCSI status: %s\n", 468 scsi_status_string(&ccb->csio)); 469 } 470 471 if ((proto_flags & CAM_ESF_PRINT_SENSE) 472 && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND) 473 && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)) { 474 #ifdef _KERNEL 475 scsi_sense_sbuf(&ccb->csio, &sb, 476 SSS_FLAG_NONE); 477 #else /* !_KERNEL */ 478 scsi_sense_sbuf(device, &ccb->csio, &sb, 479 SSS_FLAG_NONE); 480 #endif /* _KERNEL/!_KERNEL */ 481 } 482 break; 483 case XPT_SMP_IO: 484 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != 485 CAM_SMP_STATUS_ERROR) 486 break; 487 488 if (proto_flags & CAM_ESF_PRINT_STATUS) { 489 sbuf_cat(&sb, path_str); 490 sbuf_printf(&sb, "SMP status: %s (%#x)\n", 491 smp_error_desc(ccb->smpio.smp_response[2]), 492 ccb->smpio.smp_response[2]); 493 } 494 /* There is no SMP equivalent to SCSI sense. */ 495 break; 496 default: 497 break; 498 } 499 } 500 501 sbuf_finish(&sb); 502 503 return(sbuf_data(&sb)); 504 } 505 506 #ifdef _KERNEL 507 508 void 509 cam_error_print(union ccb *ccb, cam_error_string_flags flags, 510 cam_error_proto_flags proto_flags) 511 { 512 char str[512]; 513 514 printf("%s", cam_error_string(ccb, str, sizeof(str), flags, 515 proto_flags)); 516 } 517 518 #else /* !_KERNEL */ 519 520 void 521 cam_error_print(struct cam_device *device, union ccb *ccb, 522 cam_error_string_flags flags, cam_error_proto_flags proto_flags, 523 FILE *ofile) 524 { 525 char str[512]; 526 527 if ((device == NULL) || (ccb == NULL) || (ofile == NULL)) 528 return; 529 530 fprintf(ofile, "%s", cam_error_string(device, ccb, str, sizeof(str), 531 flags, proto_flags)); 532 } 533 534 #endif /* _KERNEL/!_KERNEL */ 535 536 /* 537 * Common calculate geometry fuction 538 * 539 * Caller should set ccg->volume_size and block_size. 540 * The extended parameter should be zero if extended translation 541 * should not be used. 542 */ 543 void 544 cam_calc_geometry(struct ccb_calc_geometry *ccg, int extended) 545 { 546 uint32_t size_mb, secs_per_cylinder; 547 548 if (ccg->block_size == 0) { 549 ccg->ccb_h.status = CAM_REQ_CMP_ERR; 550 return; 551 } 552 size_mb = (1024L * 1024L) / ccg->block_size; 553 if (size_mb == 0) { 554 ccg->ccb_h.status = CAM_REQ_CMP_ERR; 555 return; 556 } 557 size_mb = ccg->volume_size / size_mb; 558 if (size_mb > 1024 && extended) { 559 ccg->heads = 255; 560 ccg->secs_per_track = 63; 561 } else { 562 ccg->heads = 64; 563 ccg->secs_per_track = 32; 564 } 565 secs_per_cylinder = ccg->heads * ccg->secs_per_track; 566 if (secs_per_cylinder == 0) { 567 ccg->ccb_h.status = CAM_REQ_CMP_ERR; 568 return; 569 } 570 ccg->cylinders = ccg->volume_size / secs_per_cylinder; 571 ccg->ccb_h.status = CAM_REQ_CMP; 572 } 573 574 #ifdef _KERNEL 575 struct memdesc 576 memdesc_ccb(union ccb *ccb) 577 { 578 struct ccb_hdr *ccb_h; 579 void *data_ptr; 580 uint32_t dxfer_len; 581 uint16_t sglist_cnt; 582 583 ccb_h = &ccb->ccb_h; 584 switch (ccb_h->func_code) { 585 case XPT_SCSI_IO: { 586 struct ccb_scsiio *csio; 587 588 csio = &ccb->csio; 589 data_ptr = csio->data_ptr; 590 dxfer_len = csio->dxfer_len; 591 sglist_cnt = csio->sglist_cnt; 592 break; 593 } 594 case XPT_CONT_TARGET_IO: { 595 struct ccb_scsiio *ctio; 596 597 ctio = &ccb->ctio; 598 data_ptr = ctio->data_ptr; 599 dxfer_len = ctio->dxfer_len; 600 sglist_cnt = ctio->sglist_cnt; 601 break; 602 } 603 case XPT_ATA_IO: { 604 struct ccb_ataio *ataio; 605 606 ataio = &ccb->ataio; 607 data_ptr = ataio->data_ptr; 608 dxfer_len = ataio->dxfer_len; 609 sglist_cnt = 0; 610 break; 611 } 612 case XPT_NVME_IO: 613 case XPT_NVME_ADMIN: { 614 struct ccb_nvmeio *nvmeio; 615 616 nvmeio = &ccb->nvmeio; 617 data_ptr = nvmeio->data_ptr; 618 dxfer_len = nvmeio->dxfer_len; 619 sglist_cnt = nvmeio->sglist_cnt; 620 break; 621 } 622 default: 623 panic("%s: Unsupported func code %d", __func__, 624 ccb_h->func_code); 625 } 626 627 switch ((ccb_h->flags & CAM_DATA_MASK)) { 628 case CAM_DATA_VADDR: 629 return (memdesc_vaddr(data_ptr, dxfer_len)); 630 case CAM_DATA_PADDR: 631 return (memdesc_paddr((vm_paddr_t)(uintptr_t)data_ptr, 632 dxfer_len)); 633 case CAM_DATA_SG: 634 return (memdesc_vlist(data_ptr, sglist_cnt)); 635 case CAM_DATA_SG_PADDR: 636 return (memdesc_plist(data_ptr, sglist_cnt)); 637 case CAM_DATA_BIO: 638 return (memdesc_bio(data_ptr)); 639 default: 640 panic("%s: flags 0x%X unimplemented", __func__, ccb_h->flags); 641 } 642 } 643 644 int 645 bus_dmamap_load_ccb(bus_dma_tag_t dmat, bus_dmamap_t map, union ccb *ccb, 646 bus_dmamap_callback_t *callback, void *callback_arg, 647 int flags) 648 { 649 struct ccb_hdr *ccb_h; 650 struct memdesc mem; 651 652 ccb_h = &ccb->ccb_h; 653 if ((ccb_h->flags & CAM_DIR_MASK) == CAM_DIR_NONE) { 654 callback(callback_arg, NULL, 0, 0); 655 return (0); 656 } 657 658 mem = memdesc_ccb(ccb); 659 return (bus_dmamap_load_mem(dmat, map, &mem, callback, callback_arg, 660 flags)); 661 } 662 #endif 663