ida.c revision 126080
1/*- 2 * Copyright (c) 1999,2000 Jonathan Lemon 3 * All rights reserved. 4 * 5 # Derived from the original IDA Compaq RAID driver, which is 6 * Copyright (c) 1996, 1997, 1998, 1999 7 * Mark Dawson and David James. 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 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 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 22 * FOR 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: head/sys/dev/ida/ida.c 126080 2004-02-21 21:10:55Z phk $"); 33 34/* 35 * Generic driver for Compaq SMART RAID adapters. 36 */ 37 38#include <sys/param.h> 39#include <sys/kernel.h> 40#include <sys/systm.h> 41#include <sys/malloc.h> 42#include <sys/stat.h> 43 44#include <sys/bio.h> 45#include <sys/bus.h> 46#include <sys/conf.h> 47#include <sys/endian.h> 48 49#include <machine/bus_memio.h> 50#include <machine/bus_pio.h> 51#include <machine/bus.h> 52#include <sys/rman.h> 53 54#include <geom/geom_disk.h> 55 56#include <dev/ida/idareg.h> 57#include <dev/ida/idavar.h> 58#include <dev/ida/idaio.h> 59 60/* prototypes */ 61static void ida_alloc_qcb(struct ida_softc *ida); 62static void ida_construct_qcb(struct ida_softc *ida); 63static void ida_start(struct ida_softc *ida); 64static void ida_done(struct ida_softc *ida, struct ida_qcb *qcb); 65static int ida_wait(struct ida_softc *ida, struct ida_qcb *qcb); 66 67static d_ioctl_t ida_ioctl; 68static struct cdevsw ida_cdevsw = { 69 .d_version = D_VERSION, 70 .d_flags = D_NEEDGIANT, 71 .d_ioctl = ida_ioctl, 72 .d_name = "ida", 73}; 74 75void 76ida_free(struct ida_softc *ida) 77{ 78 int i; 79 80 for (i = 0; i < ida->num_qcbs; i++) 81 bus_dmamap_destroy(ida->buffer_dmat, ida->qcbs[i].dmamap); 82 83 if (ida->hwqcb_busaddr) 84 bus_dmamap_unload(ida->hwqcb_dmat, ida->hwqcb_dmamap); 85 86 if (ida->hwqcbs) 87 bus_dmamem_free(ida->hwqcb_dmat, ida->hwqcbs, 88 ida->hwqcb_dmamap); 89 90 if (ida->buffer_dmat) 91 bus_dma_tag_destroy(ida->buffer_dmat); 92 93 if (ida->hwqcb_dmat) 94 bus_dma_tag_destroy(ida->hwqcb_dmat); 95 96 if (ida->qcbs != NULL) 97 free(ida->qcbs, M_DEVBUF); 98 99 if (ida->ih != NULL) 100 bus_teardown_intr(ida->dev, ida->irq, ida->ih); 101 102 if (ida->irq != NULL) 103 bus_release_resource(ida->dev, ida->irq_res_type, 104 0, ida->irq); 105 106 if (ida->parent_dmat != NULL) 107 bus_dma_tag_destroy(ida->parent_dmat); 108 109 if (ida->regs != NULL) 110 bus_release_resource(ida->dev, ida->regs_res_type, 111 ida->regs_res_id, ida->regs); 112} 113 114/* 115 * record bus address from bus_dmamap_load 116 */ 117static void 118ida_dma_map_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error) 119{ 120 bus_addr_t *baddr; 121 122 baddr = (bus_addr_t *)arg; 123 *baddr = segs->ds_addr; 124} 125 126static __inline struct ida_qcb * 127ida_get_qcb(struct ida_softc *ida) 128{ 129 struct ida_qcb *qcb; 130 131 if ((qcb = SLIST_FIRST(&ida->free_qcbs)) != NULL) { 132 SLIST_REMOVE_HEAD(&ida->free_qcbs, link.sle); 133 } else { 134 ida_alloc_qcb(ida); 135 if ((qcb = SLIST_FIRST(&ida->free_qcbs)) != NULL) 136 SLIST_REMOVE_HEAD(&ida->free_qcbs, link.sle); 137 } 138 return (qcb); 139} 140 141static __inline bus_addr_t 142idahwqcbvtop(struct ida_softc *ida, struct ida_hardware_qcb *hwqcb) 143{ 144 return (ida->hwqcb_busaddr + 145 ((bus_addr_t)hwqcb - (bus_addr_t)ida->hwqcbs)); 146} 147 148static __inline struct ida_qcb * 149idahwqcbptov(struct ida_softc *ida, bus_addr_t hwqcb_addr) 150{ 151 struct ida_hardware_qcb *hwqcb; 152 153 hwqcb = (struct ida_hardware_qcb *) 154 ((bus_addr_t)ida->hwqcbs + (hwqcb_addr - ida->hwqcb_busaddr)); 155 return (hwqcb->qcb); 156} 157 158/* 159 * XXX 160 * since we allocate all QCB space up front during initialization, then 161 * why bother with this routine? 162 */ 163static void 164ida_alloc_qcb(struct ida_softc *ida) 165{ 166 struct ida_qcb *qcb; 167 int error; 168 169 if (ida->num_qcbs >= IDA_QCB_MAX) 170 return; 171 172 qcb = &ida->qcbs[ida->num_qcbs]; 173 174 error = bus_dmamap_create(ida->buffer_dmat, /*flags*/0, &qcb->dmamap); 175 if (error != 0) 176 return; 177 178 qcb->flags = QCB_FREE; 179 qcb->hwqcb = &ida->hwqcbs[ida->num_qcbs]; 180 qcb->hwqcb->qcb = qcb; 181 qcb->hwqcb_busaddr = idahwqcbvtop(ida, qcb->hwqcb); 182 SLIST_INSERT_HEAD(&ida->free_qcbs, qcb, link.sle); 183 ida->num_qcbs++; 184} 185 186int 187ida_init(struct ida_softc *ida) 188{ 189 int error; 190 191 ida->unit = device_get_unit(ida->dev); 192 ida->tag = rman_get_bustag(ida->regs); 193 ida->bsh = rman_get_bushandle(ida->regs); 194 195 SLIST_INIT(&ida->free_qcbs); 196 STAILQ_INIT(&ida->qcb_queue); 197 bioq_init(&ida->bio_queue); 198 199 ida->qcbs = (struct ida_qcb *) 200 malloc(IDA_QCB_MAX * sizeof(struct ida_qcb), M_DEVBUF, 201 M_NOWAIT | M_ZERO); 202 if (ida->qcbs == NULL) 203 return (ENOMEM); 204 205 /* 206 * Create our DMA tags 207 */ 208 209 /* DMA tag for our hardware QCB structures */ 210 error = bus_dma_tag_create(ida->parent_dmat, 211 /*alignment*/1, /*boundary*/0, 212 /*lowaddr*/BUS_SPACE_MAXADDR, /*highaddr*/BUS_SPACE_MAXADDR, 213 /*filter*/NULL, /*filterarg*/NULL, 214 IDA_QCB_MAX * sizeof(struct ida_hardware_qcb), 215 /*nsegments*/1, /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, 216 /*flags*/0, /*lockfunc*/busdma_lock_mutex, /*lockarg*/&Giant, 217 &ida->hwqcb_dmat); 218 if (error) 219 return (ENOMEM); 220 221 /* DMA tag for mapping buffers into device space */ 222 error = bus_dma_tag_create(ida->parent_dmat, 223 /*alignment*/1, /*boundary*/0, 224 /*lowaddr*/BUS_SPACE_MAXADDR, /*highaddr*/BUS_SPACE_MAXADDR, 225 /*filter*/NULL, /*filterarg*/NULL, 226 /*maxsize*/MAXBSIZE, /*nsegments*/IDA_NSEG, 227 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, /*flags*/0, 228 /*lockfunc*/busdma_lock_mutex, /*lockarg*/&Giant, &ida->buffer_dmat); 229 if (error) 230 return (ENOMEM); 231 232 /* Allocation of hardware QCBs */ 233 /* XXX allocation is rounded to hardware page size */ 234 error = bus_dmamem_alloc(ida->hwqcb_dmat, 235 (void **)&ida->hwqcbs, BUS_DMA_NOWAIT, &ida->hwqcb_dmamap); 236 if (error) 237 return (ENOMEM); 238 239 /* And permanently map them in */ 240 bus_dmamap_load(ida->hwqcb_dmat, ida->hwqcb_dmamap, 241 ida->hwqcbs, IDA_QCB_MAX * sizeof(struct ida_hardware_qcb), 242 ida_dma_map_cb, &ida->hwqcb_busaddr, /*flags*/0); 243 244 bzero(ida->hwqcbs, IDA_QCB_MAX * sizeof(struct ida_hardware_qcb)); 245 246 ida_alloc_qcb(ida); /* allocate an initial qcb */ 247 248 return (0); 249} 250 251void 252ida_attach(struct ida_softc *ida) 253{ 254 struct ida_controller_info cinfo; 255 int error, i; 256 257 ida->cmd.int_enable(ida, 0); 258 259 error = ida_command(ida, CMD_GET_CTRL_INFO, &cinfo, sizeof(cinfo), 260 IDA_CONTROLLER, 0, DMA_DATA_IN); 261 if (error) { 262 device_printf(ida->dev, "CMD_GET_CTRL_INFO failed.\n"); 263 return; 264 } 265 266 device_printf(ida->dev, "drives=%d firm_rev=%c%c%c%c\n", 267 cinfo.num_drvs, cinfo.firm_rev[0], cinfo.firm_rev[1], 268 cinfo.firm_rev[2], cinfo.firm_rev[3]); 269 270 if (ida->flags & IDA_FIRMWARE) { 271 int data; 272 273 error = ida_command(ida, CMD_START_FIRMWARE, 274 &data, sizeof(data), IDA_CONTROLLER, 0, DMA_DATA_IN); 275 if (error) { 276 device_printf(ida->dev, "CMD_START_FIRMWARE failed.\n"); 277 return; 278 } 279 } 280 281 ida->ida_dev_t = make_dev(&ida_cdevsw, ida->unit, 282 UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR, 283 "ida%d", ida->unit); 284 ida->ida_dev_t->si_drv1 = ida; 285 286 ida->num_drives = 0; 287 for (i = 0; i < cinfo.num_drvs; i++) 288 device_add_child(ida->dev, /*"idad"*/NULL, -1); 289 290 bus_generic_attach(ida->dev); 291 292 ida->cmd.int_enable(ida, 1); 293} 294 295int 296ida_detach(device_t dev) 297{ 298 struct ida_softc *ida; 299 int error = 0; 300 301 ida = (struct ida_softc *)device_get_softc(dev); 302 303 /* 304 * XXX 305 * before detaching, we must make sure that the system is 306 * quiescent; nothing mounted, no pending activity. 307 */ 308 309 /* 310 * XXX 311 * now, how are we supposed to maintain a list of our drives? 312 * iterate over our "child devices"? 313 */ 314 315 destroy_dev(ida->ida_dev_t); 316 ida_free(ida); 317 return (error); 318} 319 320static void 321ida_setup_dmamap(void *arg, bus_dma_segment_t *segs, int nsegments, int error) 322{ 323 struct ida_hardware_qcb *hwqcb = (struct ida_hardware_qcb *)arg; 324 int i; 325 326 hwqcb->hdr.size = htole16((sizeof(struct ida_req) + 327 sizeof(struct ida_sgb) * IDA_NSEG) >> 2); 328 329 for (i = 0; i < nsegments; i++) { 330 hwqcb->seg[i].addr = htole32(segs[i].ds_addr); 331 hwqcb->seg[i].length = htole32(segs[i].ds_len); 332 } 333 hwqcb->req.sgcount = nsegments; 334} 335 336int 337ida_command(struct ida_softc *ida, int command, void *data, int datasize, 338 int drive, u_int32_t pblkno, int flags) 339{ 340 struct ida_hardware_qcb *hwqcb; 341 struct ida_qcb *qcb; 342 bus_dmasync_op_t op; 343 int s, error; 344 345 s = splbio(); 346 qcb = ida_get_qcb(ida); 347 splx(s); 348 349 if (qcb == NULL) { 350 printf("ida_command: out of QCBs"); 351 return (EAGAIN); 352 } 353 354 hwqcb = qcb->hwqcb; 355 bzero(hwqcb, sizeof(struct ida_hdr) + sizeof(struct ida_req)); 356 357 bus_dmamap_load(ida->buffer_dmat, qcb->dmamap, 358 (void *)data, datasize, ida_setup_dmamap, hwqcb, 0); 359 op = qcb->flags & DMA_DATA_IN ? 360 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE; 361 bus_dmamap_sync(ida->buffer_dmat, qcb->dmamap, op); 362 363 hwqcb->hdr.drive = drive; 364 hwqcb->req.blkno = htole32(pblkno); 365 hwqcb->req.bcount = htole16(howmany(datasize, DEV_BSIZE)); 366 hwqcb->req.command = command; 367 368 qcb->flags = flags | IDA_COMMAND; 369 370 s = splbio(); 371 STAILQ_INSERT_TAIL(&ida->qcb_queue, qcb, link.stqe); 372 ida_start(ida); 373 error = ida_wait(ida, qcb); 374 splx(s); 375 376 /* XXX should have status returned here? */ 377 /* XXX have "status pointer" area in QCB? */ 378 379 return (error); 380} 381 382void 383ida_submit_buf(struct ida_softc *ida, struct bio *bp) 384{ 385 bioq_insert_tail(&ida->bio_queue, bp); 386 ida_construct_qcb(ida); 387 ida_start(ida); 388} 389 390static void 391ida_construct_qcb(struct ida_softc *ida) 392{ 393 struct ida_hardware_qcb *hwqcb; 394 struct ida_qcb *qcb; 395 bus_dmasync_op_t op; 396 struct bio *bp; 397 398 bp = bioq_first(&ida->bio_queue); 399 if (bp == NULL) 400 return; /* no more buffers */ 401 402 qcb = ida_get_qcb(ida); 403 if (qcb == NULL) 404 return; /* out of resources */ 405 406 bioq_remove(&ida->bio_queue, bp); 407 qcb->buf = bp; 408 qcb->flags = bp->bio_cmd == BIO_READ ? DMA_DATA_IN : DMA_DATA_OUT; 409 410 hwqcb = qcb->hwqcb; 411 bzero(hwqcb, sizeof(struct ida_hdr) + sizeof(struct ida_req)); 412 413 bus_dmamap_load(ida->buffer_dmat, qcb->dmamap, 414 (void *)bp->bio_data, bp->bio_bcount, ida_setup_dmamap, hwqcb, 0); 415 op = qcb->flags & DMA_DATA_IN ? 416 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE; 417 bus_dmamap_sync(ida->buffer_dmat, qcb->dmamap, op); 418 419 { 420 struct idad_softc *drv = (struct idad_softc *)bp->bio_driver1; 421 hwqcb->hdr.drive = drv->drive; 422 } 423 424 hwqcb->req.blkno = bp->bio_pblkno; 425 hwqcb->req.bcount = howmany(bp->bio_bcount, DEV_BSIZE); 426 hwqcb->req.command = bp->bio_cmd == BIO_READ ? CMD_READ : CMD_WRITE; 427 428 STAILQ_INSERT_TAIL(&ida->qcb_queue, qcb, link.stqe); 429} 430 431/* 432 * This routine will be called from ida_intr in order to queue up more 433 * I/O, meaning that we may be in an interrupt context. Hence, we should 434 * not muck around with spl() in this routine. 435 */ 436static void 437ida_start(struct ida_softc *ida) 438{ 439 struct ida_qcb *qcb; 440 441 while ((qcb = STAILQ_FIRST(&ida->qcb_queue)) != NULL) { 442 if (ida->cmd.fifo_full(ida)) 443 break; 444 STAILQ_REMOVE_HEAD(&ida->qcb_queue, link.stqe); 445 /* 446 * XXX 447 * place the qcb on an active list and set a timeout? 448 */ 449 qcb->state = QCB_ACTIVE; 450 ida->cmd.submit(ida, qcb); 451 } 452} 453 454static int 455ida_wait(struct ida_softc *ida, struct ida_qcb *qcb) 456{ 457 struct ida_qcb *qcb_done = NULL; 458 bus_addr_t completed; 459 int delay; 460 461 if (ida->flags & IDA_INTERRUPTS) { 462 if (tsleep(qcb, PRIBIO, "idacmd", 5 * hz)) 463 return (ETIMEDOUT); 464 return (0); 465 } 466 467again: 468 delay = 5 * 1000 * 100; /* 5 sec delay */ 469 while ((completed = ida->cmd.done(ida)) == 0) { 470 if (delay-- == 0) 471 return (ETIMEDOUT); 472 DELAY(10); 473 } 474 475 qcb_done = idahwqcbptov(ida, completed & ~3); 476 if (qcb_done != qcb) 477 goto again; 478 ida_done(ida, qcb); 479 return (0); 480} 481 482void 483ida_intr(void *data) 484{ 485 struct ida_softc *ida; 486 struct ida_qcb *qcb; 487 bus_addr_t completed; 488 489 ida = (struct ida_softc *)data; 490 491 if (ida->cmd.int_pending(ida) == 0) 492 return; /* not our interrupt */ 493 494 while ((completed = ida->cmd.done(ida)) != 0) { 495 qcb = idahwqcbptov(ida, completed & ~3); 496 497 if (qcb == NULL || qcb->state != QCB_ACTIVE) { 498 device_printf(ida->dev, 499 "ignoring completion %jx\n", (intmax_t)completed); 500 continue; 501 } 502 /* Handle "Bad Command List" errors. */ 503 if ((completed & 3) && (qcb->hwqcb->req.error == 0)) 504 qcb->hwqcb->req.error = CMD_REJECTED; 505 ida_done(ida, qcb); 506 } 507 ida_start(ida); 508} 509 510/* 511 * should switch out command type; may be status, not just I/O. 512 */ 513static void 514ida_done(struct ida_softc *ida, struct ida_qcb *qcb) 515{ 516 int error = 0; 517 518 /* 519 * finish up command 520 */ 521 if (qcb->flags & DMA_DATA_TRANSFER) { 522 bus_dmasync_op_t op; 523 524 op = qcb->flags & DMA_DATA_IN ? 525 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE; 526 bus_dmamap_sync(ida->buffer_dmat, qcb->dmamap, op); 527 bus_dmamap_unload(ida->buffer_dmat, qcb->dmamap); 528 } 529 530 if (qcb->hwqcb->req.error & SOFT_ERROR) { 531 if (qcb->buf) 532 device_printf(ida->dev, "soft %s error\n", 533 qcb->buf->bio_cmd == BIO_READ ? 534 "read" : "write"); 535 else 536 device_printf(ida->dev, "soft error\n"); 537 } 538 if (qcb->hwqcb->req.error & HARD_ERROR) { 539 error = 1; 540 if (qcb->buf) 541 device_printf(ida->dev, "hard %s error\n", 542 qcb->buf->bio_cmd == BIO_READ ? 543 "read" : "write"); 544 else 545 device_printf(ida->dev, "hard error\n"); 546 } 547 if (qcb->hwqcb->req.error & CMD_REJECTED) { 548 error = 1; 549 device_printf(ida->dev, "invalid request\n"); 550 } 551 552 if (qcb->flags & IDA_COMMAND) { 553 if (ida->flags & IDA_INTERRUPTS) 554 wakeup(qcb); 555 } else { 556 if (error) 557 qcb->buf->bio_flags |= BIO_ERROR; 558 idad_intr(qcb->buf); 559 } 560 561 qcb->state = QCB_FREE; 562 qcb->buf = NULL; 563 SLIST_INSERT_HEAD(&ida->free_qcbs, qcb, link.sle); 564 ida_construct_qcb(ida); 565} 566 567/* 568 * IOCTL stuff follows. 569 */ 570struct cmd_info { 571 int cmd; 572 int len; 573 int flags; 574}; 575static struct cmd_info *ida_cmd_lookup(int); 576 577static int 578ida_ioctl (dev_t dev, u_long cmd, caddr_t addr, int32_t flag, struct thread *td) 579{ 580 struct ida_softc *sc; 581 struct ida_user_command *uc; 582 struct cmd_info *ci; 583 int len; 584 int flags; 585 int error; 586 int data; 587 void *daddr; 588 589 sc = (struct ida_softc *)dev->si_drv1; 590 uc = (struct ida_user_command *)addr; 591 error = 0; 592 593 switch (cmd) { 594 case IDAIO_COMMAND: 595 ci = ida_cmd_lookup(uc->command); 596 if (ci == NULL) { 597 error = EINVAL; 598 break; 599 } 600 len = ci->len; 601 flags = ci->flags; 602 if (len) 603 daddr = &uc->d.buf; 604 else { 605 daddr = &data; 606 len = sizeof(data); 607 } 608 error = ida_command(sc, uc->command, daddr, len, 609 uc->drive, uc->blkno, flags); 610 break; 611 default: 612 error = ENOIOCTL; 613 break; 614 } 615 return (error); 616} 617 618static struct cmd_info ci_list[] = { 619 { CMD_GET_LOG_DRV_INFO, 620 sizeof(struct ida_drive_info), DMA_DATA_IN }, 621 { CMD_GET_CTRL_INFO, 622 sizeof(struct ida_controller_info), DMA_DATA_IN }, 623 { CMD_SENSE_DRV_STATUS, 624 sizeof(struct ida_drive_status), DMA_DATA_IN }, 625 { CMD_START_RECOVERY, 0, 0 }, 626 { CMD_GET_PHYS_DRV_INFO, 627 sizeof(struct ida_phys_drv_info), DMA_DATA_TRANSFER }, 628 { CMD_BLINK_DRV_LEDS, 629 sizeof(struct ida_blink_drv_leds), DMA_DATA_OUT }, 630 { CMD_SENSE_DRV_LEDS, 631 sizeof(struct ida_blink_drv_leds), DMA_DATA_IN }, 632 { CMD_GET_LOG_DRV_EXT, 633 sizeof(struct ida_drive_info_ext), DMA_DATA_IN }, 634 { CMD_RESET_CTRL, 0, 0 }, 635 { CMD_GET_CONFIG, 0, 0 }, 636 { CMD_SET_CONFIG, 0, 0 }, 637 { CMD_LABEL_LOG_DRV, 638 sizeof(struct ida_label_logical), DMA_DATA_OUT }, 639 { CMD_SET_SURFACE_DELAY, 0, 0 }, 640 { CMD_SENSE_BUS_PARAMS, 0, 0 }, 641 { CMD_SENSE_SUBSYS_INFO, 0, 0 }, 642 { CMD_SENSE_SURFACE_ATS, 0, 0 }, 643 { CMD_PASSTHROUGH, 0, 0 }, 644 { CMD_RESET_SCSI_DEV, 0, 0 }, 645 { CMD_PAUSE_BG_ACT, 0, 0 }, 646 { CMD_RESUME_BG_ACT, 0, 0 }, 647 { CMD_START_FIRMWARE, 0, 0 }, 648 { CMD_SENSE_DRV_ERR_LOG, 0, 0 }, 649 { CMD_START_CPM, 0, 0 }, 650 { CMD_SENSE_CP, 0, 0 }, 651 { CMD_STOP_CPM, 0, 0 }, 652 { CMD_FLUSH_CACHE, 0, 0 }, 653 { CMD_ACCEPT_MEDIA_EXCH, 0, 0 }, 654 { 0, 0, 0 } 655}; 656 657static struct cmd_info * 658ida_cmd_lookup (int command) 659{ 660 struct cmd_info *ci; 661 662 ci = ci_list; 663 while (ci->cmd) { 664 if (ci->cmd == command) 665 return (ci); 666 ci++; 667 } 668 return (NULL); 669} 670