2 * Copyright (c) 1998 - 2008 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 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_device *atadev = device_get_softc(dev);
123 struct ata_request *request = ata_alloc_request();
128 request->u.ata.command = command;
129 request->u.ata.lba = lba;
130 request->u.ata.count = count;
131 request->u.ata.feature = feature;
132 request->flags = ATA_R_CONTROL;
133 if (atadev->spindown_state) {
134 device_printf(dev, "request while spun down, starting.\n");
135 atadev->spindown_state = 0;
136 request->timeout = 31;
138 request->timeout = 5;
140 request->retries = 0;
141 ata_queue_request(request);
142 error = request->result;
143 ata_free_request(request);
149 ata_atapicmd(device_t dev, u_int8_t *ccb, caddr_t data,
150 int count, int flags, int timeout)
152 struct ata_request *request = ata_alloc_request();
153 struct ata_device *atadev = device_get_softc(dev);
158 if ((atadev->param.config & ATA_PROTO_MASK) == ATA_PROTO_ATAPI_12)
159 bcopy(ccb, request->u.atapi.ccb, 12);
161 bcopy(ccb, request->u.atapi.ccb, 16);
162 request->data = data;
163 request->bytecount = count;
164 request->transfersize = min(request->bytecount, 65534);
165 request->flags = flags | ATA_R_ATAPI;
166 request->timeout = timeout;
167 request->retries = 0;
168 ata_queue_request(request);
169 error = request->result;
170 ata_free_request(request);
176 ata_start(device_t dev)
178 struct ata_channel *ch = device_get_softc(dev);
179 struct ata_request *request;
180 struct ata_composite *cptr;
181 int dependencies = 0;
183 /* if we have a request on the queue try to get it running */
184 mtx_lock(&ch->queue_mtx);
185 if ((request = TAILQ_FIRST(&ch->ata_queue))) {
187 /* we need the locking function to get the lock for this channel */
188 if (ATA_LOCKING(dev, ATA_LF_LOCK) == ch->unit) {
190 /* check for composite dependencies */
191 if ((cptr = request->composite)) {
192 mtx_lock(&cptr->lock);
193 if ((request->flags & ATA_R_WRITE) &&
194 (cptr->wr_depend & cptr->rd_done) != cptr->wr_depend) {
197 mtx_unlock(&cptr->lock);
200 /* check we are in the right state and has no dependencies */
201 mtx_lock(&ch->state_mtx);
202 if (ch->state == ATA_IDLE && !dependencies) {
203 ATA_DEBUG_RQ(request, "starting");
204 TAILQ_REMOVE(&ch->ata_queue, request, chain);
205 ch->running = request;
206 ch->state = ATA_ACTIVE;
208 /* if we are the freezing point release it */
209 if (ch->freezepoint == request)
210 ch->freezepoint = NULL;
212 if (ch->hw.begin_transaction(request) == ATA_OP_FINISHED) {
214 ch->state = ATA_IDLE;
215 mtx_unlock(&ch->state_mtx);
216 mtx_unlock(&ch->queue_mtx);
217 ATA_LOCKING(dev, ATA_LF_UNLOCK);
222 mtx_unlock(&ch->state_mtx);
225 mtx_unlock(&ch->queue_mtx);
227 while (ch->running) {
235 ata_finish(struct ata_request *request)
237 struct ata_channel *ch = device_get_softc(request->parent);
240 * if in ATA_STALL_QUEUE state or request has ATA_R_DIRECT flags set
241 * we need to call ata_complete() directly here (no taskqueue involvement)
244 (ch->state & ATA_STALL_QUEUE) || (request->flags & ATA_R_DIRECT)) {
245 ATA_DEBUG_RQ(request, "finish directly");
246 ata_completed(request, 0);
249 /* put request on the proper taskqueue for completion */
250 if (request->bio && !(request->flags & (ATA_R_THREAD | ATA_R_TIMEOUT))){
251 ATA_DEBUG_RQ(request, "finish bio_taskqueue");
252 bio_taskqueue(request->bio, (bio_task_t *)ata_completed, request);
255 TASK_INIT(&request->task, 0, ata_completed, request);
256 ATA_DEBUG_RQ(request, "finish taskqueue_swi");
257 taskqueue_enqueue(taskqueue_swi, &request->task);
263 ata_completed(void *context, int dummy)
265 struct ata_request *request = (struct ata_request *)context;
266 struct ata_channel *ch = device_get_softc(request->parent);
267 struct ata_device *atadev = device_get_softc(request->dev);
268 struct ata_composite *composite;
270 if (request->flags & ATA_R_DANGER2) {
271 device_printf(request->dev,
272 "WARNING - %s freeing taskqueue zombie request\n",
273 ata_cmd2str(request));
274 request->flags &= ~(ATA_R_DANGER1 | ATA_R_DANGER2);
275 ata_free_request(request);
278 if (request->flags & ATA_R_DANGER1)
279 request->flags |= ATA_R_DANGER2;
281 ATA_DEBUG_RQ(request, "completed entered");
283 /* if we had a timeout, reinit channel and deal with the falldown */
284 if (request->flags & ATA_R_TIMEOUT) {
286 * if the channel is still present and
287 * reinit succeeds and
288 * the device doesn't get detached and
289 * there are retries left we reinject this request
291 if (ch && !ata_reinit(ch->dev) && !request->result &&
292 (request->retries-- > 0)) {
293 if (!(request->flags & ATA_R_QUIET)) {
294 device_printf(request->dev,
295 "TIMEOUT - %s retrying (%d retr%s left)",
296 ata_cmd2str(request), request->retries,
297 request->retries == 1 ? "y" : "ies");
298 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL)))
299 printf(" LBA=%ju", request->u.ata.lba);
302 request->flags &= ~(ATA_R_TIMEOUT | ATA_R_DEBUG);
303 request->flags |= (ATA_R_AT_HEAD | ATA_R_REQUEUE);
304 ATA_DEBUG_RQ(request, "completed reinject");
305 ata_queue_request(request);
309 /* ran out of good intentions so finish with error */
310 if (!request->result) {
311 if (!(request->flags & ATA_R_QUIET)) {
313 device_printf(request->dev, "FAILURE - %s timed out",
314 ata_cmd2str(request));
315 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL)))
316 printf(" LBA=%ju", request->u.ata.lba);
320 request->result = EIO;
323 else if (!(request->flags & ATA_R_ATAPI) ){
324 /* if this is a soft ECC error warn about it */
325 /* XXX SOS we could do WARF here */
326 if ((request->status & (ATA_S_CORR | ATA_S_ERROR)) == ATA_S_CORR) {
327 device_printf(request->dev,
328 "WARNING - %s soft error (ECC corrected)",
329 ata_cmd2str(request));
330 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL)))
331 printf(" LBA=%ju", request->u.ata.lba);
335 /* if this is a UDMA CRC error we reinject if there are retries left */
336 if (request->flags & ATA_R_DMA && request->error & ATA_E_ICRC) {
337 if (request->retries-- > 0) {
338 device_printf(request->dev,
339 "WARNING - %s UDMA ICRC error (retrying request)",
340 ata_cmd2str(request));
341 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL)))
342 printf(" LBA=%ju", request->u.ata.lba);
344 request->flags |= (ATA_R_AT_HEAD | ATA_R_REQUEUE);
345 ata_queue_request(request);
351 switch (request->flags & ATA_R_ATAPI) {
355 if (!request->result && request->status & ATA_S_ERROR) {
356 if (!(request->flags & ATA_R_QUIET)) {
357 device_printf(request->dev,
358 "FAILURE - %s status=%b error=%b",
359 ata_cmd2str(request),
360 request->status, "\20\10BUSY\7READY\6DMA_READY"
361 "\5DSC\4DRQ\3CORRECTABLE\2INDEX\1ERROR",
362 request->error, "\20\10ICRC\7UNCORRECTABLE"
363 "\6MEDIA_CHANGED\5NID_NOT_FOUND"
364 "\4MEDIA_CHANGE_REQEST"
365 "\3ABORTED\2NO_MEDIA\1ILLEGAL_LENGTH");
366 if ((request->flags & ATA_R_DMA) && request->dma &&
367 (request->dma->status & ATA_BMSTAT_ERROR))
368 printf(" dma=0x%02x", request->dma->status);
369 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL)))
370 printf(" LBA=%ju", request->u.ata.lba);
373 request->result = EIO;
379 /* skip if result already set */
383 /* if we have a sensekey -> request sense from device */
384 if ((request->error & ATA_E_ATAPI_SENSE_MASK) &&
385 (request->u.atapi.ccb[0] != ATAPI_REQUEST_SENSE)) {
386 static u_int8_t ccb[16] = { ATAPI_REQUEST_SENSE, 0, 0, 0,
387 sizeof(struct atapi_sense),
388 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
390 request->u.atapi.saved_cmd = request->u.atapi.ccb[0];
391 bcopy(ccb, request->u.atapi.ccb, 16);
392 request->data = (caddr_t)&request->u.atapi.sense;
393 request->bytecount = sizeof(struct atapi_sense);
394 request->donecount = 0;
395 request->transfersize = sizeof(struct atapi_sense);
396 request->timeout = 5;
397 request->flags &= (ATA_R_ATAPI | ATA_R_QUIET | ATA_R_DEBUG);
398 request->flags |= (ATA_R_READ | ATA_R_AT_HEAD | ATA_R_REQUEUE);
399 ATA_DEBUG_RQ(request, "autoissue request sense");
400 ata_queue_request(request);
404 switch (request->u.atapi.sense.key & ATA_SENSE_KEY_MASK) {
405 case ATA_SENSE_RECOVERED_ERROR:
406 device_printf(request->dev, "WARNING - %s recovered error\n",
407 ata_cmd2str(request));
410 case ATA_SENSE_NO_SENSE:
414 case ATA_SENSE_NOT_READY:
415 request->result = EBUSY;
418 case ATA_SENSE_UNIT_ATTENTION:
419 atadev->flags |= ATA_D_MEDIA_CHANGED;
420 request->result = EIO;
424 request->result = EIO;
425 if (request->flags & ATA_R_QUIET)
428 device_printf(request->dev,
429 "FAILURE - %s %s asc=0x%02x ascq=0x%02x ",
430 ata_cmd2str(request), ata_skey2str(
431 (request->u.atapi.sense.key & ATA_SENSE_KEY_MASK)),
432 request->u.atapi.sense.asc,
433 request->u.atapi.sense.ascq);
434 if (request->u.atapi.sense.specific & ATA_SENSE_SPEC_VALID)
435 printf("sks=0x%02x 0x%02x 0x%02x\n",
436 request->u.atapi.sense.specific & ATA_SENSE_SPEC_MASK,
437 request->u.atapi.sense.specific1,
438 request->u.atapi.sense.specific2);
443 if (!request->result &&
444 (request->u.atapi.sense.key & ATA_SENSE_KEY_MASK ||
446 request->result = EIO;
449 ATA_DEBUG_RQ(request, "completed callback/wakeup");
451 /* if we are part of a composite operation we need to maintain progress */
452 if ((composite = request->composite)) {
455 mtx_lock(&composite->lock);
457 /* update whats done */
458 if (request->flags & ATA_R_READ)
459 composite->rd_done |= (1 << request->this);
460 if (request->flags & ATA_R_WRITE)
461 composite->wr_done |= (1 << request->this);
463 /* find ready to go dependencies */
464 if (composite->wr_depend &&
465 (composite->rd_done & composite->wr_depend)==composite->wr_depend &&
466 (composite->wr_needed & (~composite->wr_done))) {
467 index = composite->wr_needed & ~composite->wr_done;
470 mtx_unlock(&composite->lock);
472 /* if we have any ready candidates kick them off */
476 for (bit = 0; bit < MAX_COMPOSITES; bit++) {
477 if (index & (1 << bit))
478 ata_start(device_get_parent(composite->request[bit]->dev));
483 /* get results back to the initiator for this request */
484 if (request->callback)
485 (request->callback)(request);
487 sema_post(&request->done);
489 /* only call ata_start if channel is present */
495 ata_timeout(struct ata_request *request)
497 struct ata_channel *ch = device_get_softc(request->parent);
499 //request->flags |= ATA_R_DEBUG;
500 ATA_DEBUG_RQ(request, "timeout");
503 * if we have an ATA_ACTIVE request running, we flag the request
504 * ATA_R_TIMEOUT so ata_finish will handle it correctly
505 * also NULL out the running request so we wont loose
506 * the race with an eventual interrupt arriving late
508 if (ch->state == ATA_ACTIVE) {
509 request->flags |= ATA_R_TIMEOUT;
510 mtx_unlock(&ch->state_mtx);
511 ATA_LOCKING(ch->dev, ATA_LF_UNLOCK);
513 ch->dma.unload(request);
517 mtx_unlock(&ch->state_mtx);
522 ata_fail_requests(device_t dev)
524 struct ata_channel *ch = device_get_softc(device_get_parent(dev));
525 struct ata_request *request, *tmp;
526 TAILQ_HEAD(, ata_request) fail_requests;
527 TAILQ_INIT(&fail_requests);
529 /* grap all channel locks to avoid races */
530 mtx_lock(&ch->queue_mtx);
531 mtx_lock(&ch->state_mtx);
533 /* do we have any running request to care about ? */
534 if ((request = ch->running) && (!dev || request->dev == dev)) {
535 callout_stop(&request->callout);
537 request->result = ENXIO;
538 TAILQ_INSERT_TAIL(&fail_requests, request, chain);
541 /* fail all requests queued on this channel for device dev if !NULL */
542 TAILQ_FOREACH_SAFE(request, &ch->ata_queue, chain, tmp) {
543 if (!dev || request->dev == dev) {
544 TAILQ_REMOVE(&ch->ata_queue, request, chain);
545 request->result = ENXIO;
546 TAILQ_INSERT_TAIL(&fail_requests, request, chain);
550 mtx_unlock(&ch->state_mtx);
551 mtx_unlock(&ch->queue_mtx);
553 /* finish up all requests collected above */
554 TAILQ_FOREACH_SAFE(request, &fail_requests, chain, tmp) {
555 TAILQ_REMOVE(&fail_requests, request, chain);
561 * Rudely drop all requests queued to the channel of specified device.
562 * XXX: The requests are leaked, use only in fatal case.
565 ata_drop_requests(device_t dev)
567 struct ata_channel *ch = device_get_softc(device_get_parent(dev));
568 struct ata_request *request, *tmp;
570 mtx_lock(&ch->queue_mtx);
571 TAILQ_FOREACH_SAFE(request, &ch->ata_queue, chain, tmp) {
572 TAILQ_REMOVE(&ch->ata_queue, request, chain);
573 request->result = ENXIO;
575 mtx_unlock(&ch->queue_mtx);
579 ata_get_lba(struct ata_request *request)
581 if (request->flags & ATA_R_ATAPI) {
582 switch (request->u.atapi.ccb[0]) {
584 case ATAPI_WRITE_BIG:
586 return (request->u.atapi.ccb[5]) | (request->u.atapi.ccb[4]<<8) |
587 (request->u.atapi.ccb[3]<<16)|(request->u.atapi.ccb[2]<<24);
590 return (request->u.atapi.ccb[4]) | (request->u.atapi.ccb[3]<<8) |
591 (request->u.atapi.ccb[2]<<16);
597 return request->u.ata.lba;
601 ata_sort_queue(struct ata_channel *ch, struct ata_request *request)
603 struct ata_request *this, *next;
605 this = TAILQ_FIRST(&ch->ata_queue);
607 /* if the queue is empty just insert */
609 if (request->composite)
610 ch->freezepoint = request;
611 TAILQ_INSERT_TAIL(&ch->ata_queue, request, chain);
615 /* dont sort frozen parts of the queue */
617 this = ch->freezepoint;
619 /* if position is less than head we add after tipping point */
620 if (ata_get_lba(request) < ata_get_lba(this)) {
621 while ((next = TAILQ_NEXT(this, chain))) {
623 /* have we reached the tipping point */
624 if (ata_get_lba(next) < ata_get_lba(this)) {
626 /* sort the insert */
628 if (ata_get_lba(request) < ata_get_lba(next))
631 } while ((next = TAILQ_NEXT(this, chain)));
638 /* we are after head so sort the insert before tipping point */
640 while ((next = TAILQ_NEXT(this, chain))) {
641 if (ata_get_lba(next) < ata_get_lba(this) ||
642 ata_get_lba(request) < ata_get_lba(next))
648 if (request->composite)
649 ch->freezepoint = request;
650 TAILQ_INSERT_AFTER(&ch->ata_queue, this, request, chain);
654 ata_cmd2str(struct ata_request *request)
656 static char buffer[20];
658 if (request->flags & ATA_R_ATAPI) {
659 switch (request->u.atapi.sense.key ?
660 request->u.atapi.saved_cmd : request->u.atapi.ccb[0]) {
661 case 0x00: return ("TEST_UNIT_READY");
662 case 0x01: return ("REZERO");
663 case 0x03: return ("REQUEST_SENSE");
664 case 0x04: return ("FORMAT");
665 case 0x08: return ("READ");
666 case 0x0a: return ("WRITE");
667 case 0x10: return ("WEOF");
668 case 0x11: return ("SPACE");
669 case 0x12: return ("INQUIRY");
670 case 0x15: return ("MODE_SELECT");
671 case 0x19: return ("ERASE");
672 case 0x1a: return ("MODE_SENSE");
673 case 0x1b: return ("START_STOP");
674 case 0x1e: return ("PREVENT_ALLOW");
675 case 0x23: return ("ATAPI_READ_FORMAT_CAPACITIES");
676 case 0x25: return ("READ_CAPACITY");
677 case 0x28: return ("READ_BIG");
678 case 0x2a: return ("WRITE_BIG");
679 case 0x2b: return ("LOCATE");
680 case 0x34: return ("READ_POSITION");
681 case 0x35: return ("SYNCHRONIZE_CACHE");
682 case 0x3b: return ("WRITE_BUFFER");
683 case 0x3c: return ("READ_BUFFER");
684 case 0x42: return ("READ_SUBCHANNEL");
685 case 0x43: return ("READ_TOC");
686 case 0x45: return ("PLAY_10");
687 case 0x47: return ("PLAY_MSF");
688 case 0x48: return ("PLAY_TRACK");
689 case 0x4b: return ("PAUSE");
690 case 0x51: return ("READ_DISK_INFO");
691 case 0x52: return ("READ_TRACK_INFO");
692 case 0x53: return ("RESERVE_TRACK");
693 case 0x54: return ("SEND_OPC_INFO");
694 case 0x55: return ("MODE_SELECT_BIG");
695 case 0x58: return ("REPAIR_TRACK");
696 case 0x59: return ("READ_MASTER_CUE");
697 case 0x5a: return ("MODE_SENSE_BIG");
698 case 0x5b: return ("CLOSE_TRACK/SESSION");
699 case 0x5c: return ("READ_BUFFER_CAPACITY");
700 case 0x5d: return ("SEND_CUE_SHEET");
701 case 0x96: return ("SERVICE_ACTION_IN");
702 case 0xa1: return ("BLANK_CMD");
703 case 0xa3: return ("SEND_KEY");
704 case 0xa4: return ("REPORT_KEY");
705 case 0xa5: return ("PLAY_12");
706 case 0xa6: return ("LOAD_UNLOAD");
707 case 0xad: return ("READ_DVD_STRUCTURE");
708 case 0xb4: return ("PLAY_CD");
709 case 0xbb: return ("SET_SPEED");
710 case 0xbd: return ("MECH_STATUS");
711 case 0xbe: return ("READ_CD");
712 case 0xff: return ("POLL_DSC");
716 switch (request->u.ata.command) {
717 case 0x00: return ("NOP");
718 case 0x08: return ("DEVICE_RESET");
719 case 0x20: return ("READ");
720 case 0x24: return ("READ48");
721 case 0x25: return ("READ_DMA48");
722 case 0x26: return ("READ_DMA_QUEUED48");
723 case 0x27: return ("READ_NATIVE_MAX_ADDRESS48");
724 case 0x29: return ("READ_MUL48");
725 case 0x30: return ("WRITE");
726 case 0x34: return ("WRITE48");
727 case 0x35: return ("WRITE_DMA48");
728 case 0x36: return ("WRITE_DMA_QUEUED48");
729 case 0x37: return ("SET_MAX_ADDRESS48");
730 case 0x39: return ("WRITE_MUL48");
731 case 0x70: return ("SEEK");
732 case 0xa0: return ("PACKET_CMD");
733 case 0xa1: return ("ATAPI_IDENTIFY");
734 case 0xa2: return ("SERVICE");
735 case 0xb0: return ("SMART");
736 case 0xc0: return ("CFA ERASE");
737 case 0xc4: return ("READ_MUL");
738 case 0xc5: return ("WRITE_MUL");
739 case 0xc6: return ("SET_MULTI");
740 case 0xc7: return ("READ_DMA_QUEUED");
741 case 0xc8: return ("READ_DMA");
742 case 0xca: return ("WRITE_DMA");
743 case 0xcc: return ("WRITE_DMA_QUEUED");
744 case 0xe6: return ("SLEEP");
745 case 0xe7: return ("FLUSHCACHE");
746 case 0xea: return ("FLUSHCACHE48");
747 case 0xec: return ("ATA_IDENTIFY");
749 switch (request->u.ata.feature) {
750 case 0x03: return ("SETFEATURES SET TRANSFER MODE");
751 case 0x02: return ("SETFEATURES ENABLE WCACHE");
752 case 0x82: return ("SETFEATURES DISABLE WCACHE");
753 case 0xaa: return ("SETFEATURES ENABLE RCACHE");
754 case 0x55: return ("SETFEATURES DISABLE RCACHE");
756 sprintf(buffer, "SETFEATURES 0x%02x", request->u.ata.feature);
758 case 0xf5: return ("SECURITY_FREE_LOCK");
759 case 0xf8: return ("READ_NATIVE_MAX_ADDRESS");
760 case 0xf9: return ("SET_MAX_ADDRESS");
763 sprintf(buffer, "unknown CMD (0x%02x)", request->u.ata.command);
768 ata_skey2str(u_int8_t skey)
771 case 0x00: return ("NO SENSE");
772 case 0x01: return ("RECOVERED ERROR");
773 case 0x02: return ("NOT READY");
774 case 0x03: return ("MEDIUM ERROR");
775 case 0x04: return ("HARDWARE ERROR");
776 case 0x05: return ("ILLEGAL REQUEST");
777 case 0x06: return ("UNIT ATTENTION");
778 case 0x07: return ("DATA PROTECT");
779 case 0x08: return ("BLANK CHECK");
780 case 0x09: return ("VENDOR SPECIFIC");
781 case 0x0a: return ("COPY ABORTED");
782 case 0x0b: return ("ABORTED COMMAND");
783 case 0x0c: return ("EQUAL");
784 case 0x0d: return ("VOLUME OVERFLOW");
785 case 0x0e: return ("MISCOMPARE");
786 case 0x0f: return ("RESERVED");
787 default: return("UNKNOWN");