2 * Copyright (c) 1998 - 2007 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.
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
31 #include <sys/param.h>
32 #include <sys/systm.h>
34 #include <sys/kernel.h>
39 #include <sys/taskqueue.h>
41 #include <machine/bus.h>
43 #include <dev/ata/ata-all.h>
47 static void ata_completed(void *, int);
48 static void ata_sort_queue(struct ata_channel *ch, struct ata_request *request);
49 static char *ata_skey2str(u_int8_t);
52 ata_queue_request(struct ata_request *request)
54 struct ata_channel *ch;
56 /* treat request as virgin (this might be an ATA_R_REQUEUE) */
57 request->result = request->status = request->error = 0;
59 /* check that that the device is still valid */
60 if (!(request->parent = device_get_parent(request->dev))) {
61 request->result = ENXIO;
62 if (request->callback)
63 (request->callback)(request);
66 ch = device_get_softc(request->parent);
67 callout_init_mtx(&request->callout, &ch->state_mtx, CALLOUT_RETURNUNLOCKED);
68 if (!request->callback && !(request->flags & ATA_R_REQUEUE))
69 sema_init(&request->done, 0, "ATA request done");
71 /* in ATA_STALL_QUEUE state we call HW directly */
72 if ((ch->state & ATA_STALL_QUEUE) && (request->flags & ATA_R_CONTROL)) {
73 mtx_lock(&ch->state_mtx);
74 ch->running = request;
75 if (ch->hw.begin_transaction(request) == ATA_OP_FINISHED) {
77 if (!request->callback)
78 sema_destroy(&request->done);
79 mtx_unlock(&ch->state_mtx);
82 mtx_unlock(&ch->state_mtx);
84 /* otherwise put request on the locked queue at the specified location */
86 mtx_lock(&ch->queue_mtx);
87 if (request->flags & ATA_R_AT_HEAD)
88 TAILQ_INSERT_HEAD(&ch->ata_queue, request, chain);
89 else if (request->flags & ATA_R_ORDERED)
90 ata_sort_queue(ch, request);
92 TAILQ_INSERT_TAIL(&ch->ata_queue, request, chain);
93 mtx_unlock(&ch->queue_mtx);
94 ATA_DEBUG_RQ(request, "queued");
98 /* if this is a requeued request callback/sleep we're done */
99 if (request->flags & ATA_R_REQUEUE)
102 /* if this is not a callback wait until request is completed */
103 if (!request->callback) {
104 ATA_DEBUG_RQ(request, "wait for completion");
106 sema_timedwait(&request->done, request->timeout * hz * 4)) {
107 device_printf(request->dev,
108 "WARNING - %s taskqueue timeout "
109 "- completing request directly\n",
110 ata_cmd2str(request));
111 request->flags |= ATA_R_DANGER1;
112 ata_completed(request, 0);
114 sema_destroy(&request->done);
119 ata_controlcmd(device_t dev, u_int8_t command, u_int16_t feature,
120 u_int64_t lba, u_int16_t count)
122 struct ata_request *request = ata_alloc_request();
127 request->u.ata.command = command;
128 request->u.ata.lba = lba;
129 request->u.ata.count = count;
130 request->u.ata.feature = feature;
131 request->flags = ATA_R_CONTROL;
132 request->timeout = 1;
133 request->retries = 0;
134 ata_queue_request(request);
135 error = request->result;
136 ata_free_request(request);
142 ata_atapicmd(device_t dev, u_int8_t *ccb, caddr_t data,
143 int count, int flags, int timeout)
145 struct ata_request *request = ata_alloc_request();
146 struct ata_device *atadev = device_get_softc(dev);
151 if ((atadev->param.config & ATA_PROTO_MASK) == ATA_PROTO_ATAPI_12)
152 bcopy(ccb, request->u.atapi.ccb, 12);
154 bcopy(ccb, request->u.atapi.ccb, 16);
155 request->data = data;
156 request->bytecount = count;
157 request->transfersize = min(request->bytecount, 65534);
158 request->flags = flags | ATA_R_ATAPI;
159 request->timeout = timeout;
160 request->retries = 0;
161 ata_queue_request(request);
162 error = request->result;
163 ata_free_request(request);
169 ata_start(device_t dev)
171 struct ata_channel *ch = device_get_softc(dev);
172 struct ata_request *request;
173 struct ata_composite *cptr;
174 int dependencies = 0;
176 /* if we have a request on the queue try to get it running */
177 mtx_lock(&ch->queue_mtx);
178 if ((request = TAILQ_FIRST(&ch->ata_queue))) {
180 /* we need the locking function to get the lock for this channel */
181 if (ATA_LOCKING(dev, ATA_LF_LOCK) == ch->unit) {
183 /* check for composite dependencies */
184 if ((cptr = request->composite)) {
185 mtx_lock(&cptr->lock);
186 if ((request->flags & ATA_R_WRITE) &&
187 (cptr->wr_depend & cptr->rd_done) != cptr->wr_depend) {
190 mtx_unlock(&cptr->lock);
193 /* check we are in the right state and has no dependencies */
194 mtx_lock(&ch->state_mtx);
195 if (ch->state == ATA_IDLE && !dependencies) {
196 ATA_DEBUG_RQ(request, "starting");
197 TAILQ_REMOVE(&ch->ata_queue, request, chain);
198 ch->running = request;
199 ch->state = ATA_ACTIVE;
201 /* if we are the freezing point release it */
202 if (ch->freezepoint == request)
203 ch->freezepoint = NULL;
205 if (ch->hw.begin_transaction(request) == ATA_OP_FINISHED) {
207 ch->state = ATA_IDLE;
208 mtx_unlock(&ch->state_mtx);
209 mtx_unlock(&ch->queue_mtx);
210 ATA_LOCKING(dev, ATA_LF_UNLOCK);
215 mtx_unlock(&ch->state_mtx);
216 mtx_unlock(&ch->queue_mtx);
217 while (ch->running) {
224 mtx_unlock(&ch->state_mtx);
227 mtx_unlock(&ch->queue_mtx);
231 ata_finish(struct ata_request *request)
233 struct ata_channel *ch = device_get_softc(request->parent);
236 * if in ATA_STALL_QUEUE state or request has ATA_R_DIRECT flags set
237 * we need to call ata_complete() directly here (no taskqueue involvement)
240 (ch->state & ATA_STALL_QUEUE) || (request->flags & ATA_R_DIRECT)) {
241 ATA_DEBUG_RQ(request, "finish directly");
242 ata_completed(request, 0);
245 /* put request on the proper taskqueue for completion */
246 if (request->bio && !(request->flags & (ATA_R_THREAD | ATA_R_TIMEOUT))){
247 ATA_DEBUG_RQ(request, "finish bio_taskqueue");
248 bio_taskqueue(request->bio, (bio_task_t *)ata_completed, request);
251 TASK_INIT(&request->task, 0, ata_completed, request);
252 ATA_DEBUG_RQ(request, "finish taskqueue_swi");
253 taskqueue_enqueue(taskqueue_swi, &request->task);
259 ata_completed(void *context, int dummy)
261 struct ata_request *request = (struct ata_request *)context;
262 struct ata_channel *ch = device_get_softc(request->parent);
263 struct ata_device *atadev = device_get_softc(request->dev);
264 struct ata_composite *composite;
266 if (request->flags & ATA_R_DANGER2) {
267 device_printf(request->dev,
268 "WARNING - %s freeing taskqueue zombie request\n",
269 ata_cmd2str(request));
270 request->flags &= ~(ATA_R_DANGER1 | ATA_R_DANGER2);
271 ata_free_request(request);
274 if (request->flags & ATA_R_DANGER1)
275 request->flags |= ATA_R_DANGER2;
277 ATA_DEBUG_RQ(request, "completed entered");
279 /* if we had a timeout, reinit channel and deal with the falldown */
280 if (request->flags & ATA_R_TIMEOUT) {
282 * if the channel is still present and
283 * reinit succeeds and
284 * the device doesn't get detached and
285 * there are retries left we reinject this request
287 if (ch && !ata_reinit(ch->dev) && !request->result &&
288 (request->retries-- > 0)) {
289 if (!(request->flags & ATA_R_QUIET)) {
290 device_printf(request->dev,
291 "TIMEOUT - %s retrying (%d retr%s left)",
292 ata_cmd2str(request), request->retries,
293 request->retries == 1 ? "y" : "ies");
294 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL)))
295 printf(" LBA=%ju", request->u.ata.lba);
298 request->flags &= ~(ATA_R_TIMEOUT | ATA_R_DEBUG);
299 request->flags |= (ATA_R_AT_HEAD | ATA_R_REQUEUE);
300 ATA_DEBUG_RQ(request, "completed reinject");
301 ata_queue_request(request);
305 /* ran out of good intentions so finish with error */
306 if (!request->result) {
307 if (!(request->flags & ATA_R_QUIET)) {
309 device_printf(request->dev, "FAILURE - %s timed out",
310 ata_cmd2str(request));
311 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL)))
312 printf(" LBA=%ju", request->u.ata.lba);
316 request->result = EIO;
319 else if (!(request->flags & ATA_R_ATAPI) ){
320 /* if this is a soft ECC error warn about it */
321 /* XXX SOS we could do WARF here */
322 if ((request->status & (ATA_S_CORR | ATA_S_ERROR)) == ATA_S_CORR) {
323 device_printf(request->dev,
324 "WARNING - %s soft error (ECC corrected)",
325 ata_cmd2str(request));
326 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL)))
327 printf(" LBA=%ju", request->u.ata.lba);
331 /* if this is a UDMA CRC error we reinject if there are retries left */
332 if (request->flags & ATA_R_DMA && request->error & ATA_E_ICRC) {
333 if (request->retries-- > 0) {
334 device_printf(request->dev,
335 "WARNING - %s UDMA ICRC error (retrying request)",
336 ata_cmd2str(request));
337 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL)))
338 printf(" LBA=%ju", request->u.ata.lba);
340 request->flags |= (ATA_R_AT_HEAD | ATA_R_REQUEUE);
341 ata_queue_request(request);
347 switch (request->flags & ATA_R_ATAPI) {
351 if (!request->result && request->status & ATA_S_ERROR) {
352 if (!(request->flags & ATA_R_QUIET)) {
353 device_printf(request->dev,
354 "FAILURE - %s status=%b error=%b",
355 ata_cmd2str(request),
356 request->status, "\20\10BUSY\7READY\6DMA_READY"
357 "\5DSC\4DRQ\3CORRECTABLE\2INDEX\1ERROR",
358 request->error, "\20\10ICRC\7UNCORRECTABLE"
359 "\6MEDIA_CHANGED\5NID_NOT_FOUND"
360 "\4MEDIA_CHANGE_REQEST"
361 "\3ABORTED\2NO_MEDIA\1ILLEGAL_LENGTH");
362 if ((request->flags & ATA_R_DMA) &&
363 (request->dmastat & ATA_BMSTAT_ERROR))
364 printf(" dma=0x%02x", request->dmastat);
365 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL)))
366 printf(" LBA=%ju", request->u.ata.lba);
369 request->result = EIO;
375 /* skip if result already set */
379 /* if we have a sensekey -> request sense from device */
380 if ((request->error & ATA_E_ATAPI_SENSE_MASK) &&
381 (request->u.atapi.ccb[0] != ATAPI_REQUEST_SENSE)) {
382 static u_int8_t ccb[16] = { ATAPI_REQUEST_SENSE, 0, 0, 0,
383 sizeof(struct atapi_sense),
384 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
386 request->u.atapi.saved_cmd = request->u.atapi.ccb[0];
387 bcopy(ccb, request->u.atapi.ccb, 16);
388 request->data = (caddr_t)&request->u.atapi.sense;
389 request->bytecount = sizeof(struct atapi_sense);
390 request->donecount = 0;
391 request->transfersize = sizeof(struct atapi_sense);
392 request->timeout = 5;
393 request->flags &= (ATA_R_ATAPI | ATA_R_QUIET | ATA_R_DEBUG);
394 request->flags |= (ATA_R_READ | ATA_R_AT_HEAD | ATA_R_REQUEUE);
395 ATA_DEBUG_RQ(request, "autoissue request sense");
396 ata_queue_request(request);
400 switch (request->u.atapi.sense.key & ATA_SENSE_KEY_MASK) {
401 case ATA_SENSE_RECOVERED_ERROR:
402 device_printf(request->dev, "WARNING - %s recovered error\n",
403 ata_cmd2str(request));
406 case ATA_SENSE_NO_SENSE:
410 case ATA_SENSE_NOT_READY:
411 request->result = EBUSY;
414 case ATA_SENSE_UNIT_ATTENTION:
415 atadev->flags |= ATA_D_MEDIA_CHANGED;
416 request->result = EIO;
420 request->result = EIO;
421 if (request->flags & ATA_R_QUIET)
424 device_printf(request->dev,
425 "FAILURE - %s %s asc=0x%02x ascq=0x%02x ",
426 ata_cmd2str(request), ata_skey2str(
427 (request->u.atapi.sense.key & ATA_SENSE_KEY_MASK)),
428 request->u.atapi.sense.asc,
429 request->u.atapi.sense.ascq);
430 if (request->u.atapi.sense.specific & ATA_SENSE_SPEC_VALID)
431 printf("sks=0x%02x 0x%02x 0x%02x\n",
432 request->u.atapi.sense.specific & ATA_SENSE_SPEC_MASK,
433 request->u.atapi.sense.specific1,
434 request->u.atapi.sense.specific2);
439 if ((request->u.atapi.sense.key & ATA_SENSE_KEY_MASK ?
440 request->u.atapi.sense.key & ATA_SENSE_KEY_MASK :
442 request->result = EIO;
445 ATA_DEBUG_RQ(request, "completed callback/wakeup");
447 /* if we are part of a composite operation we need to maintain progress */
448 if ((composite = request->composite)) {
451 mtx_lock(&composite->lock);
453 /* update whats done */
454 if (request->flags & ATA_R_READ)
455 composite->rd_done |= (1 << request->this);
456 if (request->flags & ATA_R_WRITE)
457 composite->wr_done |= (1 << request->this);
459 /* find ready to go dependencies */
460 if (composite->wr_depend &&
461 (composite->rd_done & composite->wr_depend)==composite->wr_depend &&
462 (composite->wr_needed & (~composite->wr_done))) {
463 index = composite->wr_needed & ~composite->wr_done;
466 mtx_unlock(&composite->lock);
468 /* if we have any ready candidates kick them off */
472 for (bit = 0; bit < MAX_COMPOSITES; bit++) {
473 if (index & (1 << bit))
474 ata_start(device_get_parent(composite->request[bit]->dev));
479 /* get results back to the initiator for this request */
480 if (request->callback)
481 (request->callback)(request);
483 sema_post(&request->done);
485 /* only call ata_start if channel is present */
491 ata_timeout(struct ata_request *request)
493 struct ata_channel *ch = device_get_softc(request->parent);
495 //request->flags |= ATA_R_DEBUG;
496 ATA_DEBUG_RQ(request, "timeout");
499 * if we have an ATA_ACTIVE request running, we flag the request
500 * ATA_R_TIMEOUT so ata_finish will handle it correctly
501 * also NULL out the running request so we wont loose
502 * the race with an eventual interrupt arriving late
504 if (ch->state == ATA_ACTIVE) {
505 request->flags |= ATA_R_TIMEOUT;
506 mtx_unlock(&ch->state_mtx);
507 ATA_LOCKING(ch->dev, ATA_LF_UNLOCK);
511 mtx_unlock(&ch->state_mtx);
516 ata_fail_requests(device_t dev)
518 struct ata_channel *ch = device_get_softc(device_get_parent(dev));
519 struct ata_request *request, *tmp;
520 TAILQ_HEAD(, ata_request) fail_requests;
521 TAILQ_INIT(&fail_requests);
523 /* grap all channel locks to avoid races */
524 mtx_lock(&ch->queue_mtx);
525 mtx_lock(&ch->state_mtx);
527 /* do we have any running request to care about ? */
528 if ((request = ch->running) && (!dev || request->dev == dev)) {
529 callout_stop(&request->callout);
531 request->result = ENXIO;
532 TAILQ_INSERT_TAIL(&fail_requests, request, chain);
535 /* fail all requests queued on this channel for device dev if !NULL */
536 TAILQ_FOREACH_SAFE(request, &ch->ata_queue, chain, tmp) {
537 if (!dev || request->dev == dev) {
538 TAILQ_REMOVE(&ch->ata_queue, request, chain);
539 request->result = ENXIO;
540 TAILQ_INSERT_TAIL(&fail_requests, request, chain);
544 mtx_unlock(&ch->state_mtx);
545 mtx_unlock(&ch->queue_mtx);
547 /* finish up all requests collected above */
548 TAILQ_FOREACH_SAFE(request, &fail_requests, chain, tmp) {
549 TAILQ_REMOVE(&fail_requests, request, chain);
555 ata_get_lba(struct ata_request *request)
557 if (request->flags & ATA_R_ATAPI) {
558 switch (request->u.atapi.ccb[0]) {
560 case ATAPI_WRITE_BIG:
562 return (request->u.atapi.ccb[5]) | (request->u.atapi.ccb[4]<<8) |
563 (request->u.atapi.ccb[3]<<16)|(request->u.atapi.ccb[2]<<24);
566 return (request->u.atapi.ccb[4]) | (request->u.atapi.ccb[3]<<8) |
567 (request->u.atapi.ccb[2]<<16);
573 return request->u.ata.lba;
577 ata_sort_queue(struct ata_channel *ch, struct ata_request *request)
579 struct ata_request *this, *next;
581 this = TAILQ_FIRST(&ch->ata_queue);
583 /* if the queue is empty just insert */
585 if (request->composite)
586 ch->freezepoint = request;
587 TAILQ_INSERT_TAIL(&ch->ata_queue, request, chain);
591 /* dont sort frozen parts of the queue */
593 this = ch->freezepoint;
595 /* if position is less than head we add after tipping point */
596 if (ata_get_lba(request) < ata_get_lba(this)) {
597 while ((next = TAILQ_NEXT(this, chain))) {
599 /* have we reached the tipping point */
600 if (ata_get_lba(next) < ata_get_lba(this)) {
602 /* sort the insert */
604 if (ata_get_lba(request) < ata_get_lba(next))
607 } while ((next = TAILQ_NEXT(this, chain)));
614 /* we are after head so sort the insert before tipping point */
616 while ((next = TAILQ_NEXT(this, chain))) {
617 if (ata_get_lba(next) < ata_get_lba(this) ||
618 ata_get_lba(request) < ata_get_lba(next))
624 if (request->composite)
625 ch->freezepoint = request;
626 TAILQ_INSERT_AFTER(&ch->ata_queue, this, request, chain);
630 ata_cmd2str(struct ata_request *request)
632 static char buffer[20];
634 if (request->flags & ATA_R_ATAPI) {
635 switch (request->u.atapi.sense.key ?
636 request->u.atapi.saved_cmd : request->u.atapi.ccb[0]) {
637 case 0x00: return ("TEST_UNIT_READY");
638 case 0x01: return ("REZERO");
639 case 0x03: return ("REQUEST_SENSE");
640 case 0x04: return ("FORMAT");
641 case 0x08: return ("READ");
642 case 0x0a: return ("WRITE");
643 case 0x10: return ("WEOF");
644 case 0x11: return ("SPACE");
645 case 0x12: return ("INQUIRY");
646 case 0x15: return ("MODE_SELECT");
647 case 0x19: return ("ERASE");
648 case 0x1a: return ("MODE_SENSE");
649 case 0x1b: return ("START_STOP");
650 case 0x1e: return ("PREVENT_ALLOW");
651 case 0x23: return ("ATAPI_READ_FORMAT_CAPACITIES");
652 case 0x25: return ("READ_CAPACITY");
653 case 0x28: return ("READ_BIG");
654 case 0x2a: return ("WRITE_BIG");
655 case 0x2b: return ("LOCATE");
656 case 0x34: return ("READ_POSITION");
657 case 0x35: return ("SYNCHRONIZE_CACHE");
658 case 0x3b: return ("WRITE_BUFFER");
659 case 0x3c: return ("READ_BUFFER");
660 case 0x42: return ("READ_SUBCHANNEL");
661 case 0x43: return ("READ_TOC");
662 case 0x45: return ("PLAY_10");
663 case 0x47: return ("PLAY_MSF");
664 case 0x48: return ("PLAY_TRACK");
665 case 0x4b: return ("PAUSE");
666 case 0x51: return ("READ_DISK_INFO");
667 case 0x52: return ("READ_TRACK_INFO");
668 case 0x53: return ("RESERVE_TRACK");
669 case 0x54: return ("SEND_OPC_INFO");
670 case 0x55: return ("MODE_SELECT_BIG");
671 case 0x58: return ("REPAIR_TRACK");
672 case 0x59: return ("READ_MASTER_CUE");
673 case 0x5a: return ("MODE_SENSE_BIG");
674 case 0x5b: return ("CLOSE_TRACK/SESSION");
675 case 0x5c: return ("READ_BUFFER_CAPACITY");
676 case 0x5d: return ("SEND_CUE_SHEET");
677 case 0x96: return ("SERVICE_ACTION_IN");
678 case 0xa1: return ("BLANK_CMD");
679 case 0xa3: return ("SEND_KEY");
680 case 0xa4: return ("REPORT_KEY");
681 case 0xa5: return ("PLAY_12");
682 case 0xa6: return ("LOAD_UNLOAD");
683 case 0xad: return ("READ_DVD_STRUCTURE");
684 case 0xb4: return ("PLAY_CD");
685 case 0xbb: return ("SET_SPEED");
686 case 0xbd: return ("MECH_STATUS");
687 case 0xbe: return ("READ_CD");
688 case 0xff: return ("POLL_DSC");
692 switch (request->u.ata.command) {
693 case 0x00: return ("NOP");
694 case 0x08: return ("DEVICE_RESET");
695 case 0x20: return ("READ");
696 case 0x24: return ("READ48");
697 case 0x25: return ("READ_DMA48");
698 case 0x26: return ("READ_DMA_QUEUED48");
699 case 0x29: return ("READ_MUL48");
700 case 0x30: return ("WRITE");
701 case 0x34: return ("WRITE48");
702 case 0x35: return ("WRITE_DMA48");
703 case 0x36: return ("WRITE_DMA_QUEUED48");
704 case 0x39: return ("WRITE_MUL48");
705 case 0x70: return ("SEEK");
706 case 0xa0: return ("PACKET_CMD");
707 case 0xa1: return ("ATAPI_IDENTIFY");
708 case 0xa2: return ("SERVICE");
709 case 0xb0: return ("SMART");
710 case 0xc0: return ("CFA ERASE");
711 case 0xc4: return ("READ_MUL");
712 case 0xc5: return ("WRITE_MUL");
713 case 0xc6: return ("SET_MULTI");
714 case 0xc7: return ("READ_DMA_QUEUED");
715 case 0xc8: return ("READ_DMA");
716 case 0xca: return ("WRITE_DMA");
717 case 0xcc: return ("WRITE_DMA_QUEUED");
718 case 0xe6: return ("SLEEP");
719 case 0xe7: return ("FLUSHCACHE");
720 case 0xea: return ("FLUSHCACHE48");
721 case 0xec: return ("ATA_IDENTIFY");
723 switch (request->u.ata.feature) {
724 case 0x03: return ("SETFEATURES SET TRANSFER MODE");
725 case 0x02: return ("SETFEATURES ENABLE WCACHE");
726 case 0x82: return ("SETFEATURES DISABLE WCACHE");
727 case 0xaa: return ("SETFEATURES ENABLE RCACHE");
728 case 0x55: return ("SETFEATURES DISABLE RCACHE");
730 sprintf(buffer, "SETFEATURES 0x%02x", request->u.ata.feature);
734 sprintf(buffer, "unknown CMD (0x%02x)", request->u.ata.command);
739 ata_skey2str(u_int8_t skey)
742 case 0x00: return ("NO SENSE");
743 case 0x01: return ("RECOVERED ERROR");
744 case 0x02: return ("NOT READY");
745 case 0x03: return ("MEDIUM ERROR");
746 case 0x04: return ("HARDWARE ERROR");
747 case 0x05: return ("ILLEGAL REQUEST");
748 case 0x06: return ("UNIT ATTENTION");
749 case 0x07: return ("DATA PROTECT");
750 case 0x08: return ("BLANK CHECK");
751 case 0x09: return ("VENDOR SPECIFIC");
752 case 0x0a: return ("COPY ABORTED");
753 case 0x0b: return ("ABORTED COMMAND");
754 case 0x0c: return ("EQUAL");
755 case 0x0d: return ("VOLUME OVERFLOW");
756 case 0x0e: return ("MISCOMPARE");
757 case 0x0f: return ("RESERVED");
758 default: return("UNKNOWN");