2 * Copyright (c) 1998 - 2006 Søren Schmidt <sos@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer,
10 * without modification, immediately at the beginning of the file.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 * $FreeBSD: src/sys/dev/ata/ata-queue.c,v 1.67 2007/01/27 21:15:58 remko Exp $
27 * $DragonFly: src/sys/dev/disk/nata/ata-queue.c,v 1.11 2008/09/23 17:43:41 dillon Exp $
32 #include <sys/param.h>
34 #include <sys/callout.h>
36 #include <sys/queue.h>
37 #include <sys/spinlock2.h>
39 #include <sys/systm.h>
40 #include <sys/taskqueue.h>
46 static void ata_completed(void *, int);
47 static void ata_sort_queue(struct ata_channel *ch, struct ata_request *request);
48 static void atawritereorder(struct ata_channel *ch);
49 static char *ata_skey2str(u_int8_t);
52 ata_queue_init(struct ata_channel *ch)
54 TAILQ_INIT(&ch->ata_queue);
56 ch->transition = NULL;
60 * Rudely drop all requests queued to the channel of specified device.
61 * XXX: The requests are leaked, use only in fatal case.
64 ata_drop_requests(device_t dev)
66 struct ata_channel *ch = device_get_softc(device_get_parent(dev));
67 struct ata_request *request, *tmp;
69 spin_lock(&ch->queue_mtx);
70 TAILQ_FOREACH_MUTABLE(request, &ch->ata_queue, chain, tmp) {
71 TAILQ_REMOVE(&ch->ata_queue, request, chain);
72 request->result = ENXIO;
74 spin_unlock(&ch->queue_mtx);
78 ata_queue_request(struct ata_request *request)
80 struct ata_channel *ch;
82 /* treat request as virgin (this might be an ATA_R_REQUEUE) */
83 request->result = request->status = request->error = 0;
85 /* check that that the device is still valid */
86 if (!(request->parent = device_get_parent(request->dev))) {
87 request->result = ENXIO;
88 if (request->callback)
89 (request->callback)(request);
92 ch = device_get_softc(request->parent);
93 callout_init_mp(&request->callout); /* serialization done via state_mtx */
94 if (!request->callback && !(request->flags & ATA_R_REQUEUE))
95 spin_init(&request->done);
97 /* in ATA_STALL_QUEUE state we call HW directly */
98 if ((ch->state & ATA_STALL_QUEUE) && (request->flags & ATA_R_CONTROL)) {
99 spin_lock(&ch->state_mtx);
100 ch->running = request;
101 if (ch->hw.begin_transaction(request) == ATA_OP_FINISHED) {
103 if (!request->callback)
104 spin_uninit(&request->done);
105 spin_unlock(&ch->state_mtx);
108 /* interlock against interrupt */
109 request->flags |= ATA_R_HWCMDQUEUED;
110 spin_unlock(&ch->state_mtx);
112 /* otherwise put request on the locked queue at the specified location */
114 spin_lock(&ch->queue_mtx);
115 if (request->flags & ATA_R_AT_HEAD) {
116 TAILQ_INSERT_HEAD(&ch->ata_queue, request, chain);
117 } else if (request->flags & ATA_R_ORDERED) {
118 ata_sort_queue(ch, request);
120 TAILQ_INSERT_TAIL(&ch->ata_queue, request, chain);
121 ch->transition = NULL;
123 spin_unlock(&ch->queue_mtx);
124 ATA_DEBUG_RQ(request, "queued");
128 /* if this is a requeued request callback/sleep we're done */
129 if (request->flags & ATA_R_REQUEUE)
132 /* if this is not a callback wait until request is completed */
133 if (!request->callback) {
134 ATA_DEBUG_RQ(request, "wait for completion");
136 /* interlock against wakeup */
137 spin_lock(&request->done);
138 /* check if the request was completed already */
139 if (!(request->flags & ATA_R_COMPLETED))
140 ssleep(request, &request->done, 0, "ATA request completion "
141 "wait", request->timeout * hz * 4);
142 spin_unlock(&request->done);
143 /* check if the request was completed while sleeping */
144 if (!(request->flags & ATA_R_COMPLETED)) {
146 device_printf(request->dev, "WARNING - %s taskqueue timeout - "
147 "completing request directly\n",
148 ata_cmd2str(request));
149 request->flags |= ATA_R_DANGER1;
150 ata_completed(request, 0);
153 spin_uninit(&request->done);
158 ata_controlcmd(device_t dev, u_int8_t command, u_int16_t feature,
159 u_int64_t lba, u_int16_t count)
161 struct ata_request *request = ata_alloc_request();
166 request->u.ata.command = command;
167 request->u.ata.lba = lba;
168 request->u.ata.count = count;
169 request->u.ata.feature = feature;
170 request->flags = ATA_R_CONTROL;
171 request->timeout = 1;
172 request->retries = 0;
173 ata_queue_request(request);
174 error = request->result;
175 ata_free_request(request);
181 ata_atapicmd(device_t dev, u_int8_t *ccb, caddr_t data,
182 int count, int flags, int timeout)
184 struct ata_request *request = ata_alloc_request();
185 struct ata_device *atadev = device_get_softc(dev);
190 if ((atadev->param.config & ATA_PROTO_MASK) == ATA_PROTO_ATAPI_12)
191 bcopy(ccb, request->u.atapi.ccb, 12);
193 bcopy(ccb, request->u.atapi.ccb, 16);
194 request->data = data;
195 request->bytecount = count;
196 request->transfersize = min(request->bytecount, 65534);
197 request->flags = flags | ATA_R_ATAPI;
198 request->timeout = timeout;
199 request->retries = 0;
200 ata_queue_request(request);
201 error = request->result;
202 ata_free_request(request);
208 ata_start(device_t dev)
210 struct ata_channel *ch = device_get_softc(dev);
211 struct ata_request *request;
212 struct ata_composite *cptr;
213 int dependencies = 0;
215 /* if we have a request on the queue try to get it running */
216 spin_lock(&ch->queue_mtx);
217 if ((request = TAILQ_FIRST(&ch->ata_queue))) {
219 /* we need the locking function to get the lock for this channel */
220 if (ATA_LOCKING(dev, ATA_LF_LOCK) == ch->unit) {
222 /* check for composite dependencies */
223 if ((cptr = request->composite)) {
224 spin_lock(&cptr->lock);
225 if ((request->flags & ATA_R_WRITE) &&
226 (cptr->wr_depend & cptr->rd_done) != cptr->wr_depend) {
229 spin_unlock(&cptr->lock);
232 /* check we are in the right state and has no dependencies */
233 spin_lock(&ch->state_mtx);
234 if (ch->state == ATA_IDLE && !dependencies) {
235 ATA_DEBUG_RQ(request, "starting");
237 if (ch->transition == request)
238 ch->transition = TAILQ_NEXT(request, chain);
239 TAILQ_REMOVE(&ch->ata_queue, request, chain);
240 ch->running = request;
241 ch->state = ATA_ACTIVE;
243 if (ch->hw.begin_transaction(request) == ATA_OP_FINISHED) {
245 ch->state = ATA_IDLE;
246 spin_unlock(&ch->state_mtx);
247 spin_unlock(&ch->queue_mtx);
248 ATA_LOCKING(dev, ATA_LF_UNLOCK);
253 /* interlock against interrupt */
254 request->flags |= ATA_R_HWCMDQUEUED;
257 spin_unlock(&ch->state_mtx);
258 spin_unlock(&ch->queue_mtx);
259 while (!ata_interrupt(ch))
264 spin_unlock(&ch->state_mtx);
267 spin_unlock(&ch->queue_mtx);
271 ata_finish(struct ata_request *request)
273 struct ata_channel *ch = device_get_softc(request->parent);
276 * if in ATA_STALL_QUEUE state or request has ATA_R_DIRECT flags set
277 * we need to call ata_complete() directly here (no taskqueue involvement)
280 (ch->state & ATA_STALL_QUEUE) || (request->flags & ATA_R_DIRECT)) {
281 ATA_DEBUG_RQ(request, "finish directly");
282 ata_completed(request, 0);
285 /* put request on the proper taskqueue for completion */
286 /* XXX FreeBSD has some sort of bio_taskqueue code here */
287 TASK_INIT(&request->task, 0, ata_completed, request);
288 ATA_DEBUG_RQ(request, "finish taskqueue_swi");
289 taskqueue_enqueue(taskqueue_swi, &request->task);
294 ata_completed(void *context, int dummy)
296 struct ata_request *request = (struct ata_request *)context;
297 struct ata_channel *ch = device_get_softc(request->parent);
298 struct ata_device *atadev = device_get_softc(request->dev);
299 struct ata_composite *composite;
301 if (request->flags & ATA_R_DANGER2) {
302 device_printf(request->dev,
303 "WARNING - %s freeing taskqueue zombie request\n",
304 ata_cmd2str(request));
305 request->flags &= ~(ATA_R_DANGER1 | ATA_R_DANGER2);
306 ata_free_request(request);
309 if (request->flags & ATA_R_DANGER1)
310 request->flags |= ATA_R_DANGER2;
312 ATA_DEBUG_RQ(request, "completed entered");
314 /* if we had a timeout, reinit channel and deal with the falldown */
315 if (request->flags & ATA_R_TIMEOUT) {
317 * if the channel is still present and
318 * reinit succeeds and
319 * the device doesn't get detached and
320 * there are retries left we reinject this request
322 if (ch && !ata_reinit(ch->dev) && !request->result &&
323 (request->retries-- > 0)) {
324 if (!(request->flags & ATA_R_QUIET)) {
325 device_printf(request->dev,
326 "TIMEOUT - %s retrying (%d retr%s left)",
327 ata_cmd2str(request), request->retries,
328 request->retries == 1 ? "y" : "ies");
329 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL)))
330 kprintf(" LBA=%ju", request->u.ata.lba);
333 request->flags &= ~(ATA_R_TIMEOUT | ATA_R_DEBUG);
334 request->flags |= (ATA_R_AT_HEAD | ATA_R_REQUEUE);
335 ATA_DEBUG_RQ(request, "completed reinject");
336 ata_queue_request(request);
340 /* ran out of good intentions so finish with error */
341 if (!request->result) {
342 if (!(request->flags & ATA_R_QUIET)) {
344 device_printf(request->dev, "FAILURE - %s timed out",
345 ata_cmd2str(request));
346 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL)))
347 kprintf(" LBA=%ju", request->u.ata.lba);
351 request->result = EIO;
354 else if (!(request->flags & ATA_R_ATAPI) ){
355 /* if this is a soft ECC error warn about it */
356 /* XXX SOS we could do WARF here */
357 if ((request->status & (ATA_S_CORR | ATA_S_ERROR)) == ATA_S_CORR) {
358 device_printf(request->dev,
359 "WARNING - %s soft error (ECC corrected)",
360 ata_cmd2str(request));
361 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL)))
362 kprintf(" LBA=%ju", request->u.ata.lba);
366 /* if this is a UDMA CRC error we reinject if there are retries left */
367 if (request->flags & ATA_R_DMA && request->error & ATA_E_ICRC) {
368 if (request->retries-- > 0) {
369 device_printf(request->dev,
370 "WARNING - %s UDMA ICRC error (retrying request)",
371 ata_cmd2str(request));
372 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL)))
373 kprintf(" LBA=%ju", request->u.ata.lba);
375 request->flags |= (ATA_R_AT_HEAD | ATA_R_REQUEUE);
376 ata_queue_request(request);
382 switch (request->flags & ATA_R_ATAPI) {
386 if (!request->result && request->status & ATA_S_ERROR) {
387 if (!(request->flags & ATA_R_QUIET)) {
388 device_printf(request->dev,
389 "FAILURE - %s status=%b error=%b",
390 ata_cmd2str(request),
391 request->status, "\20\10BUSY\7READY\6DMA_READY"
392 "\5DSC\4DRQ\3CORRECTABLE\2INDEX\1ERROR",
393 request->error, "\20\10ICRC\7UNCORRECTABLE"
394 "\6MEDIA_CHANGED\5NID_NOT_FOUND"
395 "\4MEDIA_CHANGE_REQEST"
396 "\3ABORTED\2NO_MEDIA\1ILLEGAL_LENGTH");
397 if ((request->flags & ATA_R_DMA) &&
398 (request->dmastat & ATA_BMSTAT_ERROR))
399 kprintf(" dma=0x%02x", request->dmastat);
400 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL)))
401 kprintf(" LBA=%ju", request->u.ata.lba);
404 request->result = EIO;
410 /* skip if result already set */
414 /* if we have a sensekey -> request sense from device */
415 if ((request->error & ATA_E_ATAPI_SENSE_MASK) &&
416 (request->u.atapi.ccb[0] != ATAPI_REQUEST_SENSE)) {
417 static u_int8_t ccb[16] = { ATAPI_REQUEST_SENSE, 0, 0, 0,
418 sizeof(struct atapi_sense),
419 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
421 request->u.atapi.saved_cmd = request->u.atapi.ccb[0];
422 bcopy(ccb, request->u.atapi.ccb, 16);
423 request->data = (caddr_t)&request->u.atapi.sense;
424 request->bytecount = sizeof(struct atapi_sense);
425 request->donecount = 0;
426 request->transfersize = sizeof(struct atapi_sense);
427 request->timeout = ATA_DEFAULT_TIMEOUT;
428 request->flags &= (ATA_R_ATAPI | ATA_R_QUIET);
429 request->flags |= (ATA_R_READ | ATA_R_AT_HEAD | ATA_R_REQUEUE);
430 ATA_DEBUG_RQ(request, "autoissue request sense");
431 ata_queue_request(request);
435 switch (request->u.atapi.sense.key & ATA_SENSE_KEY_MASK) {
436 case ATA_SENSE_RECOVERED_ERROR:
437 device_printf(request->dev, "WARNING - %s recovered error\n",
438 ata_cmd2str(request));
441 case ATA_SENSE_NO_SENSE:
445 case ATA_SENSE_NOT_READY:
446 request->result = EBUSY;
449 case ATA_SENSE_UNIT_ATTENTION:
450 atadev->flags |= ATA_D_MEDIA_CHANGED;
451 request->result = EIO;
455 request->result = EIO;
456 if (request->flags & ATA_R_QUIET)
459 device_printf(request->dev,
460 "FAILURE - %s %s asc=0x%02x ascq=0x%02x ",
461 ata_cmd2str(request), ata_skey2str(
462 (request->u.atapi.sense.key & ATA_SENSE_KEY_MASK)),
463 request->u.atapi.sense.asc,
464 request->u.atapi.sense.ascq);
465 if (request->u.atapi.sense.specific & ATA_SENSE_SPEC_VALID)
466 kprintf("sks=0x%02x 0x%02x 0x%02x\n",
467 request->u.atapi.sense.specific & ATA_SENSE_SPEC_MASK,
468 request->u.atapi.sense.specific1,
469 request->u.atapi.sense.specific2);
474 if ((request->u.atapi.sense.key & ATA_SENSE_KEY_MASK ?
475 request->u.atapi.sense.key & ATA_SENSE_KEY_MASK :
477 request->result = EIO;
480 ATA_DEBUG_RQ(request, "completed callback/wakeup");
482 /* if we are part of a composite operation we need to maintain progress */
483 if ((composite = request->composite)) {
486 spin_lock(&composite->lock);
488 /* update whats done */
489 if (request->flags & ATA_R_READ)
490 composite->rd_done |= (1 << request->this);
491 if (request->flags & ATA_R_WRITE)
492 composite->wr_done |= (1 << request->this);
494 /* find ready to go dependencies */
495 if (composite->wr_depend &&
496 (composite->rd_done & composite->wr_depend)==composite->wr_depend &&
497 (composite->wr_needed & (~composite->wr_done))) {
498 index = composite->wr_needed & ~composite->wr_done;
501 spin_unlock(&composite->lock);
503 /* if we have any ready candidates kick them off */
507 for (bit = 0; bit < MAX_COMPOSITES; bit++) {
508 if (index & (1 << bit))
509 ata_start(device_get_parent(composite->request[bit]->dev));
514 /* get results back to the initiator for this request */
515 if (request->callback)
516 (request->callback)(request);
518 spin_lock(&request->done);
519 request->flags |= ATA_R_COMPLETED;
520 spin_unlock(&request->done);
524 /* only call ata_start if channel is present */
530 ata_timeout(struct ata_request *request)
532 struct ata_channel *ch = device_get_softc(request->parent);
534 /* acquire state_mtx, softclock_handler() doesn't do this for us */
535 spin_lock(&ch->state_mtx);
537 /*request->flags |= ATA_R_DEBUG;*/
538 ATA_DEBUG_RQ(request, "timeout");
541 * if we have an ATA_ACTIVE request running, we flag the request
542 * ATA_R_TIMEOUT so ata_finish will handle it correctly
543 * also NULL out the running request so we wont loose
544 * the race with an eventual interrupt arriving late
546 if (ch->state == ATA_ACTIVE) {
547 request->flags |= ATA_R_TIMEOUT;
548 spin_unlock(&ch->state_mtx);
549 ATA_LOCKING(ch->dev, ATA_LF_UNLOCK);
553 spin_unlock(&ch->state_mtx);
558 ata_fail_requests(device_t dev)
560 struct ata_channel *ch = device_get_softc(device_get_parent(dev));
561 struct ata_request *request, *tmp;
562 TAILQ_HEAD(, ata_request) fail_requests;
563 TAILQ_INIT(&fail_requests);
565 /* grap all channel locks to avoid races */
566 spin_lock(&ch->queue_mtx);
567 spin_lock(&ch->state_mtx);
569 /* do we have any running request to care about ? */
570 if ((request = ch->running) && (!dev || request->dev == dev)) {
571 callout_stop(&request->callout);
573 request->result = ENXIO;
574 TAILQ_INSERT_TAIL(&fail_requests, request, chain);
577 /* fail all requests queued on this channel for device dev if !NULL */
578 TAILQ_FOREACH_MUTABLE(request, &ch->ata_queue, chain, tmp) {
579 if (!dev || request->dev == dev) {
580 if (ch->transition == request)
581 ch->transition = TAILQ_NEXT(request, chain);
582 TAILQ_REMOVE(&ch->ata_queue, request, chain);
583 request->result = ENXIO;
584 TAILQ_INSERT_TAIL(&fail_requests, request, chain);
588 spin_unlock(&ch->state_mtx);
589 spin_unlock(&ch->queue_mtx);
591 /* finish up all requests collected above */
592 TAILQ_FOREACH_MUTABLE(request, &fail_requests, chain, tmp) {
593 TAILQ_REMOVE(&fail_requests, request, chain);
599 ata_get_lba(struct ata_request *request)
601 if (request->flags & ATA_R_ATAPI) {
602 switch (request->u.atapi.ccb[0]) {
604 case ATAPI_WRITE_BIG:
606 return (request->u.atapi.ccb[5]) | (request->u.atapi.ccb[4]<<8) |
607 (request->u.atapi.ccb[3]<<16)|(request->u.atapi.ccb[2]<<24);
610 return (request->u.atapi.ccb[4]) | (request->u.atapi.ccb[3]<<8) |
611 (request->u.atapi.ccb[2]<<16);
617 return request->u.ata.lba;
621 * This implements exactly bioqdisksort() in the DragonFly kernel.
622 * The short description is: Because megabytes and megabytes worth of
623 * writes can be queued there needs to be a read-prioritization mechanism
624 * or reads get completely starved out.
627 ata_sort_queue(struct ata_channel *ch, struct ata_request *request)
629 if ((request->flags & ATA_R_WRITE) == 0) {
630 if (ch->transition) {
632 * Insert before the first write
634 TAILQ_INSERT_BEFORE(ch->transition, request, chain);
635 if (++ch->reorder >= bioq_reorder_minor_interval) {
641 * No writes queued (or ordering was forced),
644 TAILQ_INSERT_TAIL(&ch->ata_queue, request, chain);
648 * Writes are always appended. If no writes were previously
649 * queued or an ordered tail insertion occured the transition
650 * field will be NULL.
652 TAILQ_INSERT_TAIL(&ch->ata_queue, request, chain);
653 if (ch->transition == NULL)
654 ch->transition = request;
656 if (request->composite) {
657 ch->transition = NULL;
663 * Move the transition point to prevent reads from completely
664 * starving our writes. This brings a number of writes into
665 * the fold every N reads.
668 atawritereorder(struct ata_channel *ch)
670 struct ata_request *req;
671 u_int64_t next_offset;
672 size_t left = (size_t)bioq_reorder_minor_bytes;
675 next_offset = ata_get_lba(ch->transition);
676 while ((req = ch->transition) != NULL &&
677 next_offset == ata_get_lba(req)) {
678 n = req->u.ata.count;
679 next_offset = ata_get_lba(req);
680 ch->transition = TAILQ_NEXT(req, chain);
688 ata_cmd2str(struct ata_request *request)
690 static char buffer[20];
692 if (request->flags & ATA_R_ATAPI) {
693 switch (request->u.atapi.sense.key ?
694 request->u.atapi.saved_cmd : request->u.atapi.ccb[0]) {
695 case 0x00: return ("TEST_UNIT_READY");
696 case 0x01: return ("REZERO");
697 case 0x03: return ("REQUEST_SENSE");
698 case 0x04: return ("FORMAT");
699 case 0x08: return ("READ");
700 case 0x0a: return ("WRITE");
701 case 0x10: return ("WEOF");
702 case 0x11: return ("SPACE");
703 case 0x12: return ("INQUIRY");
704 case 0x15: return ("MODE_SELECT");
705 case 0x19: return ("ERASE");
706 case 0x1a: return ("MODE_SENSE");
707 case 0x1b: return ("START_STOP");
708 case 0x1e: return ("PREVENT_ALLOW");
709 case 0x23: return ("ATAPI_READ_FORMAT_CAPACITIES");
710 case 0x25: return ("READ_CAPACITY");
711 case 0x28: return ("READ_BIG");
712 case 0x2a: return ("WRITE_BIG");
713 case 0x2b: return ("LOCATE");
714 case 0x34: return ("READ_POSITION");
715 case 0x35: return ("SYNCHRONIZE_CACHE");
716 case 0x3b: return ("WRITE_BUFFER");
717 case 0x3c: return ("READ_BUFFER");
718 case 0x42: return ("READ_SUBCHANNEL");
719 case 0x43: return ("READ_TOC");
720 case 0x45: return ("PLAY_10");
721 case 0x47: return ("PLAY_MSF");
722 case 0x48: return ("PLAY_TRACK");
723 case 0x4b: return ("PAUSE");
724 case 0x51: return ("READ_DISK_INFO");
725 case 0x52: return ("READ_TRACK_INFO");
726 case 0x53: return ("RESERVE_TRACK");
727 case 0x54: return ("SEND_OPC_INFO");
728 case 0x55: return ("MODE_SELECT_BIG");
729 case 0x58: return ("REPAIR_TRACK");
730 case 0x59: return ("READ_MASTER_CUE");
731 case 0x5a: return ("MODE_SENSE_BIG");
732 case 0x5b: return ("CLOSE_TRACK/SESSION");
733 case 0x5c: return ("READ_BUFFER_CAPACITY");
734 case 0x5d: return ("SEND_CUE_SHEET");
735 case 0x96: return ("READ_CAPACITY_16");
736 case 0xa1: return ("BLANK_CMD");
737 case 0xa3: return ("SEND_KEY");
738 case 0xa4: return ("REPORT_KEY");
739 case 0xa5: return ("PLAY_12");
740 case 0xa6: return ("LOAD_UNLOAD");
741 case 0xad: return ("READ_DVD_STRUCTURE");
742 case 0xb4: return ("PLAY_CD");
743 case 0xbb: return ("SET_SPEED");
744 case 0xbd: return ("MECH_STATUS");
745 case 0xbe: return ("READ_CD");
746 case 0xff: return ("POLL_DSC");
750 switch (request->u.ata.command) {
751 case 0x00: return ("NOP");
752 case 0x08: return ("DEVICE_RESET");
753 case 0x20: return ("READ");
754 case 0x24: return ("READ48");
755 case 0x25: return ("READ_DMA48");
756 case 0x26: return ("READ_DMA_QUEUED48");
757 case 0x29: return ("READ_MUL48");
758 case 0x30: return ("WRITE");
759 case 0x34: return ("WRITE48");
760 case 0x35: return ("WRITE_DMA48");
761 case 0x36: return ("WRITE_DMA_QUEUED48");
762 case 0x39: return ("WRITE_MUL48");
763 case 0x70: return ("SEEK");
764 case 0xa0: return ("PACKET_CMD");
765 case 0xa1: return ("ATAPI_IDENTIFY");
766 case 0xa2: return ("SERVICE");
767 case 0xb0: return ("SMART");
768 case 0xc0: return ("CFA ERASE");
769 case 0xc4: return ("READ_MUL");
770 case 0xc5: return ("WRITE_MUL");
771 case 0xc6: return ("SET_MULTI");
772 case 0xc7: return ("READ_DMA_QUEUED");
773 case 0xc8: return ("READ_DMA");
774 case 0xca: return ("WRITE_DMA");
775 case 0xcc: return ("WRITE_DMA_QUEUED");
776 case 0xe6: return ("SLEEP");
777 case 0xe7: return ("FLUSHCACHE");
778 case 0xea: return ("FLUSHCACHE48");
779 case 0xec: return ("ATA_IDENTIFY");
781 switch (request->u.ata.feature) {
782 case 0x03: return ("SETFEATURES SET TRANSFER MODE");
783 case 0x02: return ("SETFEATURES ENABLE WCACHE");
784 case 0x82: return ("SETFEATURES DISABLE WCACHE");
785 case 0xaa: return ("SETFEATURES ENABLE RCACHE");
786 case 0x55: return ("SETFEATURES DISABLE RCACHE");
788 ksprintf(buffer, "SETFEATURES 0x%02x", request->u.ata.feature);
792 ksprintf(buffer, "unknown CMD (0x%02x)", request->u.ata.command);
797 ata_skey2str(u_int8_t skey)
800 case 0x00: return ("NO SENSE");
801 case 0x01: return ("RECOVERED ERROR");
802 case 0x02: return ("NOT READY");
803 case 0x03: return ("MEDIUM ERROR");
804 case 0x04: return ("HARDWARE ERROR");
805 case 0x05: return ("ILLEGAL REQUEST");
806 case 0x06: return ("UNIT ATTENTION");
807 case 0x07: return ("DATA PROTECT");
808 case 0x08: return ("BLANK CHECK");
809 case 0x09: return ("VENDOR SPECIFIC");
810 case 0x0a: return ("COPY ABORTED");
811 case 0x0b: return ("ABORTED COMMAND");
812 case 0x0c: return ("EQUAL");
813 case 0x0d: return ("VOLUME OVERFLOW");
814 case 0x0e: return ("MISCOMPARE");
815 case 0x0f: return ("RESERVED");
816 default: return("UNKNOWN");