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/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 #include <sys/param.h> 35 #ifdef _KERNEL 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/memdesc.h> 39 #include <sys/sysctl.h> 40 #else /* _KERNEL */ 41 #include <stdlib.h> 42 #include <stdio.h> 43 #include <string.h> 44 #include <camlib.h> 45 #endif /* _KERNEL */ 46 47 #include <cam/cam.h> 48 #include <cam/cam_ccb.h> 49 #include <cam/scsi/scsi_all.h> 50 #include <cam/scsi/smp_all.h> 51 #include <sys/sbuf.h> 52 53 #ifdef _KERNEL 54 #include <sys/libkern.h> 55 #include <machine/bus.h> 56 #include <cam/cam_queue.h> 57 #include <cam/cam_xpt.h> 58 59 FEATURE(scbus, "SCSI devices support"); 60 61 #endif 62 63 static int camstatusentrycomp(const void *key, const void *member); 64 65 const struct cam_status_entry cam_status_table[] = { 66 { CAM_REQ_INPROG, "CCB request is in progress" }, 67 { CAM_REQ_CMP, "CCB request completed without error" }, 68 { CAM_REQ_ABORTED, "CCB request aborted by the host" }, 69 { CAM_UA_ABORT, "Unable to abort CCB request" }, 70 { CAM_REQ_CMP_ERR, "CCB request completed with an error" }, 71 { CAM_BUSY, "CAM subsystem is busy" }, 72 { CAM_REQ_INVALID, "CCB request was invalid" }, 73 { CAM_PATH_INVALID, "Supplied Path ID is invalid" }, 74 { CAM_DEV_NOT_THERE, "Device Not Present" }, 75 { CAM_UA_TERMIO, "Unable to terminate I/O CCB request" }, 76 { CAM_SEL_TIMEOUT, "Selection Timeout" }, 77 { CAM_CMD_TIMEOUT, "Command timeout" }, 78 { CAM_SCSI_STATUS_ERROR, "SCSI Status Error" }, 79 { CAM_MSG_REJECT_REC, "Message Reject Reveived" }, 80 { CAM_SCSI_BUS_RESET, "SCSI Bus Reset Sent/Received" }, 81 { CAM_UNCOR_PARITY, "Uncorrectable parity/CRC error" }, 82 { CAM_AUTOSENSE_FAIL, "Auto-Sense Retrieval Failed" }, 83 { CAM_NO_HBA, "No HBA Detected" }, 84 { CAM_DATA_RUN_ERR, "Data Overrun error" }, 85 { CAM_UNEXP_BUSFREE, "Unexpected Bus Free" }, 86 { CAM_SEQUENCE_FAIL, "Target Bus Phase Sequence Failure" }, 87 { CAM_CCB_LEN_ERR, "CCB length supplied is inadequate" }, 88 { CAM_PROVIDE_FAIL, "Unable to provide requested capability" }, 89 { CAM_BDR_SENT, "SCSI BDR Message Sent" }, 90 { CAM_REQ_TERMIO, "CCB request terminated by the host" }, 91 { CAM_UNREC_HBA_ERROR, "Unrecoverable Host Bus Adapter Error" }, 92 { CAM_REQ_TOO_BIG, "The request was too large for this host" }, 93 { CAM_REQUEUE_REQ, "Unconditionally Re-queue Request", }, 94 { CAM_ATA_STATUS_ERROR, "ATA Status Error" }, 95 { CAM_SCSI_IT_NEXUS_LOST,"Initiator/Target Nexus Lost" }, 96 { CAM_SMP_STATUS_ERROR, "SMP Status Error" }, 97 { CAM_IDE, "Initiator Detected Error Message Received" }, 98 { CAM_RESRC_UNAVAIL, "Resource Unavailable" }, 99 { CAM_UNACKED_EVENT, "Unacknowledged Event by Host" }, 100 { CAM_MESSAGE_RECV, "Message Received in Host Target Mode" }, 101 { CAM_INVALID_CDB, "Invalid CDB received in Host Target Mode" }, 102 { CAM_LUN_INVALID, "Invalid Lun" }, 103 { CAM_TID_INVALID, "Invalid Target ID" }, 104 { CAM_FUNC_NOTAVAIL, "Function Not Available" }, 105 { CAM_NO_NEXUS, "Nexus Not Established" }, 106 { CAM_IID_INVALID, "Invalid Initiator ID" }, 107 { CAM_CDB_RECVD, "CDB Received" }, 108 { CAM_LUN_ALRDY_ENA, "LUN Already Enabled for Target Mode" }, 109 { CAM_SCSI_BUSY, "SCSI Bus Busy" }, 110 }; 111 112 #ifdef _KERNEL 113 SYSCTL_NODE(_kern, OID_AUTO, cam, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 114 "CAM Subsystem"); 115 116 #ifndef CAM_DEFAULT_SORT_IO_QUEUES 117 #define CAM_DEFAULT_SORT_IO_QUEUES 1 118 #endif 119 120 int cam_sort_io_queues = CAM_DEFAULT_SORT_IO_QUEUES; 121 SYSCTL_INT(_kern_cam, OID_AUTO, sort_io_queues, CTLFLAG_RWTUN, 122 &cam_sort_io_queues, 0, "Sort IO queues to try and optimise disk access patterns"); 123 #endif 124 125 void 126 cam_strvis(uint8_t *dst, const uint8_t *src, int srclen, int dstlen) 127 { 128 cam_strvis_flag(dst, src, srclen, dstlen, 129 CAM_STRVIS_FLAG_NONASCII_ESC); 130 } 131 132 void 133 cam_strvis_flag(uint8_t *dst, const uint8_t *src, int srclen, int dstlen, 134 uint32_t flags) 135 { 136 struct sbuf sb; 137 138 sbuf_new(&sb, dst, dstlen, SBUF_FIXEDLEN); 139 cam_strvis_sbuf(&sb, src, srclen, flags); 140 sbuf_finish(&sb); 141 } 142 143 void 144 cam_strvis_sbuf(struct sbuf *sb, const uint8_t *src, int srclen, 145 uint32_t flags) 146 { 147 148 /* Trim leading/trailing spaces, nulls. */ 149 while (srclen > 0 && src[0] == ' ') 150 src++, srclen--; 151 while (srclen > 0 152 && (src[srclen-1] == ' ' || src[srclen-1] == '\0')) 153 srclen--; 154 155 while (srclen > 0) { 156 if (*src < 0x20 || *src >= 0x80) { 157 /* SCSI-II Specifies that these should never occur. */ 158 /* non-printable character */ 159 switch (flags & CAM_STRVIS_FLAG_NONASCII_MASK) { 160 case CAM_STRVIS_FLAG_NONASCII_ESC: 161 sbuf_printf(sb, "\\%c%c%c", 162 ((*src & 0300) >> 6) + '0', 163 ((*src & 0070) >> 3) + '0', 164 ((*src & 0007) >> 0) + '0'); 165 break; 166 case CAM_STRVIS_FLAG_NONASCII_RAW: 167 /* 168 * If we run into a NUL, just transform it 169 * into a space. 170 */ 171 if (*src != 0x00) 172 sbuf_putc(sb, *src); 173 else 174 sbuf_putc(sb, ' '); 175 break; 176 case CAM_STRVIS_FLAG_NONASCII_SPC: 177 sbuf_putc(sb, ' '); 178 break; 179 case CAM_STRVIS_FLAG_NONASCII_TRIM: 180 default: 181 break; 182 } 183 } else { 184 /* normal character */ 185 sbuf_putc(sb, *src); 186 } 187 src++; 188 srclen--; 189 } 190 } 191 192 /* 193 * Compare string with pattern, returning 0 on match. 194 * Short pattern matches trailing blanks in name, 195 * Shell globbing rules apply: * matches 0 or more characters, 196 * ? matchces one character, [...] denotes a set to match one char, 197 * [^...] denotes a complimented set to match one character. 198 * Spaces in str used to match anything in the pattern string 199 * but was removed because it's a bug. No current patterns require 200 * it, as far as I know, but it's impossible to know what drives 201 * returned. 202 * 203 * Each '*' generates recursion, so keep the number of * in check. 204 */ 205 int 206 cam_strmatch(const uint8_t *str, const uint8_t *pattern, int str_len) 207 { 208 209 while (*pattern != '\0' && str_len > 0) { 210 if (*pattern == '*') { 211 pattern++; 212 if (*pattern == '\0') 213 return (0); 214 do { 215 if (cam_strmatch(str, pattern, str_len) == 0) 216 return (0); 217 str++; 218 str_len--; 219 } while (str_len > 0); 220 return (1); 221 } else if (*pattern == '[') { 222 int negate_range, ok; 223 uint8_t pc = UCHAR_MAX; 224 uint8_t sc; 225 226 ok = 0; 227 sc = *str++; 228 str_len--; 229 pattern++; 230 if ((negate_range = (*pattern == '^')) != 0) 231 pattern++; 232 while ((*pattern != ']') && *pattern != '\0') { 233 if (*pattern == '-') { 234 if (pattern[1] == '\0') /* Bad pattern */ 235 return (1); 236 if (sc >= pc && sc <= pattern[1]) 237 ok = 1; 238 pattern++; 239 } else if (*pattern == sc) 240 ok = 1; 241 pc = *pattern; 242 pattern++; 243 } 244 if (ok == negate_range) 245 return (1); 246 pattern++; 247 } else if (*pattern == '?') { 248 /* 249 * NB: || *str == ' ' of the old code is a bug and was 250 * removed. If you add it back, keep this the last if 251 * before the naked else */ 252 pattern++; 253 str++; 254 str_len--; 255 } else { 256 if (*str != *pattern) 257 return (1); 258 pattern++; 259 str++; 260 str_len--; 261 } 262 } 263 264 /* '*' is allowed to match nothing, so gobble it */ 265 while (*pattern == '*') 266 pattern++; 267 268 if ( *pattern != '\0') { 269 /* Pattern not fully consumed. Not a match */ 270 return (1); 271 } 272 273 /* Eat trailing spaces, which get added by SAT */ 274 while (str_len > 0 && *str == ' ') { 275 str++; 276 str_len--; 277 } 278 279 return (str_len); 280 } 281 282 caddr_t 283 cam_quirkmatch(caddr_t target, caddr_t quirk_table, int num_entries, 284 int entry_size, cam_quirkmatch_t *comp_func) 285 { 286 for (; num_entries > 0; num_entries--, quirk_table += entry_size) { 287 if ((*comp_func)(target, quirk_table) == 0) 288 return (quirk_table); 289 } 290 return (NULL); 291 } 292 293 const struct cam_status_entry* 294 cam_fetch_status_entry(cam_status status) 295 { 296 status &= CAM_STATUS_MASK; 297 return (bsearch(&status, &cam_status_table, 298 nitems(cam_status_table), 299 sizeof(*cam_status_table), 300 camstatusentrycomp)); 301 } 302 303 static int 304 camstatusentrycomp(const void *key, const void *member) 305 { 306 cam_status status; 307 const struct cam_status_entry *table_entry; 308 309 status = *(const cam_status *)key; 310 table_entry = (const struct cam_status_entry *)member; 311 312 return (status - table_entry->status_code); 313 } 314 315 #ifdef _KERNEL 316 char * 317 cam_error_string(union ccb *ccb, char *str, int str_len, 318 cam_error_string_flags flags, 319 cam_error_proto_flags proto_flags) 320 #else /* !_KERNEL */ 321 char * 322 cam_error_string(struct cam_device *device, union ccb *ccb, char *str, 323 int str_len, cam_error_string_flags flags, 324 cam_error_proto_flags proto_flags) 325 #endif /* _KERNEL/!_KERNEL */ 326 { 327 char path_str[64]; 328 struct sbuf sb; 329 330 if ((ccb == NULL) 331 || (str == NULL) 332 || (str_len <= 0)) 333 return(NULL); 334 335 if (flags == CAM_ESF_NONE) 336 return(NULL); 337 338 switch (ccb->ccb_h.func_code) { 339 case XPT_ATA_IO: 340 switch (proto_flags & CAM_EPF_LEVEL_MASK) { 341 case CAM_EPF_NONE: 342 break; 343 case CAM_EPF_ALL: 344 case CAM_EPF_NORMAL: 345 proto_flags |= CAM_EAF_PRINT_RESULT; 346 /* FALLTHROUGH */ 347 case CAM_EPF_MINIMAL: 348 proto_flags |= CAM_EAF_PRINT_STATUS; 349 /* FALLTHROUGH */ 350 default: 351 break; 352 } 353 break; 354 case XPT_SCSI_IO: 355 switch (proto_flags & CAM_EPF_LEVEL_MASK) { 356 case CAM_EPF_NONE: 357 break; 358 case CAM_EPF_ALL: 359 case CAM_EPF_NORMAL: 360 proto_flags |= CAM_ESF_PRINT_SENSE; 361 /* FALLTHROUGH */ 362 case CAM_EPF_MINIMAL: 363 proto_flags |= CAM_ESF_PRINT_STATUS; 364 /* FALLTHROUGH */ 365 default: 366 break; 367 } 368 break; 369 case XPT_SMP_IO: 370 switch (proto_flags & CAM_EPF_LEVEL_MASK) { 371 case CAM_EPF_NONE: 372 break; 373 case CAM_EPF_ALL: 374 proto_flags |= CAM_ESMF_PRINT_FULL_CMD; 375 /* FALLTHROUGH */ 376 case CAM_EPF_NORMAL: 377 case CAM_EPF_MINIMAL: 378 proto_flags |= CAM_ESMF_PRINT_STATUS; 379 /* FALLTHROUGH */ 380 default: 381 break; 382 } 383 break; 384 default: 385 break; 386 } 387 #ifdef _KERNEL 388 xpt_path_string(ccb->csio.ccb_h.path, path_str, sizeof(path_str)); 389 #else /* !_KERNEL */ 390 cam_path_string(device, path_str, sizeof(path_str)); 391 #endif /* _KERNEL/!_KERNEL */ 392 393 sbuf_new(&sb, str, str_len, 0); 394 395 if (flags & CAM_ESF_COMMAND) { 396 sbuf_cat(&sb, path_str); 397 switch (ccb->ccb_h.func_code) { 398 case XPT_ATA_IO: 399 ata_command_sbuf(&ccb->ataio, &sb); 400 break; 401 case XPT_SCSI_IO: 402 #ifdef _KERNEL 403 scsi_command_string(&ccb->csio, &sb); 404 #else /* !_KERNEL */ 405 scsi_command_string(device, &ccb->csio, &sb); 406 #endif /* _KERNEL/!_KERNEL */ 407 break; 408 case XPT_SMP_IO: 409 smp_command_sbuf(&ccb->smpio, &sb, path_str, 79 - 410 strlen(path_str), (proto_flags & 411 CAM_ESMF_PRINT_FULL_CMD) ? 79 : 0); 412 break; 413 case XPT_NVME_IO: 414 case XPT_NVME_ADMIN: 415 nvme_command_sbuf(&ccb->nvmeio, &sb); 416 break; 417 default: 418 sbuf_printf(&sb, "CAM func %#x", 419 ccb->ccb_h.func_code); 420 break; 421 } 422 sbuf_printf(&sb, "\n"); 423 } 424 425 if (flags & CAM_ESF_CAM_STATUS) { 426 cam_status status; 427 const struct cam_status_entry *entry; 428 429 sbuf_cat(&sb, path_str); 430 431 status = ccb->ccb_h.status & CAM_STATUS_MASK; 432 433 entry = cam_fetch_status_entry(status); 434 435 if (entry == NULL) 436 sbuf_printf(&sb, "CAM status: Unknown (%#x)\n", 437 ccb->ccb_h.status); 438 else 439 sbuf_printf(&sb, "CAM status: %s\n", 440 entry->status_text); 441 } 442 443 if (flags & CAM_ESF_PROTO_STATUS) { 444 445 switch (ccb->ccb_h.func_code) { 446 case XPT_ATA_IO: 447 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != 448 CAM_ATA_STATUS_ERROR) 449 break; 450 if (proto_flags & CAM_EAF_PRINT_STATUS) { 451 sbuf_cat(&sb, path_str); 452 ata_status_sbuf(&ccb->ataio, &sb); 453 sbuf_printf(&sb, "\n"); 454 } 455 if (proto_flags & CAM_EAF_PRINT_RESULT) { 456 sbuf_cat(&sb, path_str); 457 sbuf_printf(&sb, "RES: "); 458 ata_res_sbuf(&ccb->ataio.res, &sb); 459 sbuf_printf(&sb, "\n"); 460 } 461 462 break; 463 case XPT_SCSI_IO: 464 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != 465 CAM_SCSI_STATUS_ERROR) 466 break; 467 468 if (proto_flags & CAM_ESF_PRINT_STATUS) { 469 sbuf_cat(&sb, path_str); 470 sbuf_printf(&sb, "SCSI status: %s\n", 471 scsi_status_string(&ccb->csio)); 472 } 473 474 if ((proto_flags & CAM_ESF_PRINT_SENSE) 475 && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND) 476 && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)) { 477 #ifdef _KERNEL 478 scsi_sense_sbuf(&ccb->csio, &sb, 479 SSS_FLAG_NONE); 480 #else /* !_KERNEL */ 481 scsi_sense_sbuf(device, &ccb->csio, &sb, 482 SSS_FLAG_NONE); 483 #endif /* _KERNEL/!_KERNEL */ 484 } 485 break; 486 case XPT_SMP_IO: 487 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != 488 CAM_SMP_STATUS_ERROR) 489 break; 490 491 if (proto_flags & CAM_ESF_PRINT_STATUS) { 492 sbuf_cat(&sb, path_str); 493 sbuf_printf(&sb, "SMP status: %s (%#x)\n", 494 smp_error_desc(ccb->smpio.smp_response[2]), 495 ccb->smpio.smp_response[2]); 496 } 497 /* There is no SMP equivalent to SCSI sense. */ 498 break; 499 default: 500 break; 501 } 502 } 503 504 sbuf_finish(&sb); 505 506 return(sbuf_data(&sb)); 507 } 508 509 #ifdef _KERNEL 510 511 void 512 cam_error_print(union ccb *ccb, cam_error_string_flags flags, 513 cam_error_proto_flags proto_flags) 514 { 515 char str[512]; 516 517 printf("%s", cam_error_string(ccb, str, sizeof(str), flags, 518 proto_flags)); 519 } 520 521 #else /* !_KERNEL */ 522 523 void 524 cam_error_print(struct cam_device *device, union ccb *ccb, 525 cam_error_string_flags flags, cam_error_proto_flags proto_flags, 526 FILE *ofile) 527 { 528 char str[512]; 529 530 if ((device == NULL) || (ccb == NULL) || (ofile == NULL)) 531 return; 532 533 fprintf(ofile, "%s", cam_error_string(device, ccb, str, sizeof(str), 534 flags, proto_flags)); 535 } 536 537 #endif /* _KERNEL/!_KERNEL */ 538 539 /* 540 * Common calculate geometry fuction 541 * 542 * Caller should set ccg->volume_size and block_size. 543 * The extended parameter should be zero if extended translation 544 * should not be used. 545 */ 546 void 547 cam_calc_geometry(struct ccb_calc_geometry *ccg, int extended) 548 { 549 uint32_t size_mb, secs_per_cylinder; 550 551 if (ccg->block_size == 0) { 552 ccg->ccb_h.status = CAM_REQ_CMP_ERR; 553 return; 554 } 555 size_mb = (1024L * 1024L) / ccg->block_size; 556 if (size_mb == 0) { 557 ccg->ccb_h.status = CAM_REQ_CMP_ERR; 558 return; 559 } 560 size_mb = ccg->volume_size / size_mb; 561 if (size_mb > 1024 && extended) { 562 ccg->heads = 255; 563 ccg->secs_per_track = 63; 564 } else { 565 ccg->heads = 64; 566 ccg->secs_per_track = 32; 567 } 568 secs_per_cylinder = ccg->heads * ccg->secs_per_track; 569 if (secs_per_cylinder == 0) { 570 ccg->ccb_h.status = CAM_REQ_CMP_ERR; 571 return; 572 } 573 ccg->cylinders = ccg->volume_size / secs_per_cylinder; 574 ccg->ccb_h.status = CAM_REQ_CMP; 575 } 576 577 #ifdef _KERNEL 578 struct memdesc 579 memdesc_ccb(union ccb *ccb) 580 { 581 struct ccb_hdr *ccb_h; 582 void *data_ptr; 583 uint32_t dxfer_len; 584 uint16_t sglist_cnt; 585 586 ccb_h = &ccb->ccb_h; 587 switch (ccb_h->func_code) { 588 case XPT_SCSI_IO: { 589 struct ccb_scsiio *csio; 590 591 csio = &ccb->csio; 592 data_ptr = csio->data_ptr; 593 dxfer_len = csio->dxfer_len; 594 sglist_cnt = csio->sglist_cnt; 595 break; 596 } 597 case XPT_CONT_TARGET_IO: { 598 struct ccb_scsiio *ctio; 599 600 ctio = &ccb->ctio; 601 data_ptr = ctio->data_ptr; 602 dxfer_len = ctio->dxfer_len; 603 sglist_cnt = ctio->sglist_cnt; 604 break; 605 } 606 case XPT_ATA_IO: { 607 struct ccb_ataio *ataio; 608 609 ataio = &ccb->ataio; 610 data_ptr = ataio->data_ptr; 611 dxfer_len = ataio->dxfer_len; 612 sglist_cnt = 0; 613 break; 614 } 615 case XPT_NVME_IO: 616 case XPT_NVME_ADMIN: { 617 struct ccb_nvmeio *nvmeio; 618 619 nvmeio = &ccb->nvmeio; 620 data_ptr = nvmeio->data_ptr; 621 dxfer_len = nvmeio->dxfer_len; 622 sglist_cnt = nvmeio->sglist_cnt; 623 break; 624 } 625 default: 626 panic("%s: Unsupported func code %d", __func__, 627 ccb_h->func_code); 628 } 629 630 switch ((ccb_h->flags & CAM_DATA_MASK)) { 631 case CAM_DATA_VADDR: 632 return (memdesc_vaddr(data_ptr, dxfer_len)); 633 case CAM_DATA_PADDR: 634 return (memdesc_paddr((vm_paddr_t)(uintptr_t)data_ptr, 635 dxfer_len)); 636 case CAM_DATA_SG: 637 return (memdesc_vlist(data_ptr, sglist_cnt)); 638 case CAM_DATA_SG_PADDR: 639 return (memdesc_plist(data_ptr, sglist_cnt)); 640 case CAM_DATA_BIO: 641 return (memdesc_bio(data_ptr)); 642 default: 643 panic("%s: flags 0x%X unimplemented", __func__, ccb_h->flags); 644 } 645 } 646 647 int 648 bus_dmamap_load_ccb(bus_dma_tag_t dmat, bus_dmamap_t map, union ccb *ccb, 649 bus_dmamap_callback_t *callback, void *callback_arg, 650 int flags) 651 { 652 struct ccb_hdr *ccb_h; 653 struct memdesc mem; 654 655 ccb_h = &ccb->ccb_h; 656 if ((ccb_h->flags & CAM_DIR_MASK) == CAM_DIR_NONE) { 657 callback(callback_arg, NULL, 0, 0); 658 return (0); 659 } 660 661 mem = memdesc_ccb(ccb); 662 return (bus_dmamap_load_mem(dmat, map, &mem, callback, callback_arg, 663 flags)); 664 } 665 #endif 666