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;
55 struct ata_device *atadev = device_get_softc(request->dev);
57 /* treat request as virgin (this might be an ATA_R_REQUEUE) */
58 request->result = request->status = request->error = 0;
60 /* Prepare paramers required by low-level code. */
61 request->unit = atadev->unit;
62 if (!(request->parent = device_get_parent(request->dev))) {
63 request->result = ENXIO;
64 if (request->callback)
65 (request->callback)(request);
68 if ((atadev->param.config & ATA_PROTO_MASK) == ATA_PROTO_ATAPI_16)
69 request->flags |= ATA_R_ATAPI16;
70 if ((atadev->param.config & ATA_DRQ_MASK) == ATA_DRQ_INTR)
71 request->flags |= ATA_R_ATAPI_INTR;
72 if ((request->flags & ATA_R_ATAPI) == 0)
73 ata_modify_if_48bit(request);
74 ch = device_get_softc(request->parent);
75 callout_init_mtx(&request->callout, &ch->state_mtx, CALLOUT_RETURNUNLOCKED);
76 if (!request->callback && !(request->flags & ATA_R_REQUEUE))
77 sema_init(&request->done, 0, "ATA request done");
79 /* in ATA_STALL_QUEUE state we call HW directly */
80 if ((ch->state & ATA_STALL_QUEUE) && (request->flags & ATA_R_CONTROL)) {
81 mtx_lock(&ch->state_mtx);
82 ch->running = request;
83 if (ch->hw.begin_transaction(request) == ATA_OP_FINISHED) {
85 if (!request->callback)
86 sema_destroy(&request->done);
87 mtx_unlock(&ch->state_mtx);
90 mtx_unlock(&ch->state_mtx);
92 /* otherwise put request on the locked queue at the specified location */
94 mtx_lock(&ch->queue_mtx);
95 if (request->flags & ATA_R_AT_HEAD)
96 TAILQ_INSERT_HEAD(&ch->ata_queue, request, chain);
97 else if (request->flags & ATA_R_ORDERED)
98 ata_sort_queue(ch, request);
100 TAILQ_INSERT_TAIL(&ch->ata_queue, request, chain);
101 mtx_unlock(&ch->queue_mtx);
102 ATA_DEBUG_RQ(request, "queued");
106 /* if this is a requeued request callback/sleep we're done */
107 if (request->flags & ATA_R_REQUEUE)
110 /* if this is not a callback wait until request is completed */
111 if (!request->callback) {
112 ATA_DEBUG_RQ(request, "wait for completion");
114 sema_timedwait(&request->done, request->timeout * hz * 4)) {
115 device_printf(request->dev,
116 "WARNING - %s taskqueue timeout "
117 "- completing request directly\n",
118 ata_cmd2str(request));
119 request->flags |= ATA_R_DANGER1;
120 ata_completed(request, 0);
122 sema_destroy(&request->done);
127 ata_controlcmd(device_t dev, u_int8_t command, u_int16_t feature,
128 u_int64_t lba, u_int16_t count)
130 struct ata_device *atadev = device_get_softc(dev);
131 struct ata_request *request = ata_alloc_request();
136 request->u.ata.command = command;
137 request->u.ata.lba = lba;
138 request->u.ata.count = count;
139 request->u.ata.feature = feature;
140 request->flags = ATA_R_CONTROL;
141 if (atadev->spindown_state) {
142 device_printf(dev, "request while spun down, starting.\n");
143 atadev->spindown_state = 0;
144 request->timeout = MAX(ATA_REQUEST_TIMEOUT, 31);
146 request->timeout = ATA_REQUEST_TIMEOUT;
148 request->retries = 0;
149 ata_queue_request(request);
150 error = request->result;
151 ata_free_request(request);
157 ata_atapicmd(device_t dev, u_int8_t *ccb, caddr_t data,
158 int count, int flags, int timeout)
160 struct ata_request *request = ata_alloc_request();
165 bcopy(ccb, request->u.atapi.ccb, 16);
166 request->data = data;
167 request->bytecount = count;
168 request->transfersize = min(request->bytecount, 65534);
169 request->flags = flags | ATA_R_ATAPI;
170 request->timeout = timeout;
171 request->retries = 0;
172 ata_queue_request(request);
173 error = request->result;
174 ata_free_request(request);
180 ata_start(device_t dev)
182 struct ata_channel *ch = device_get_softc(dev);
183 struct ata_request *request;
184 struct ata_composite *cptr;
185 int dependencies = 0;
187 /* if we have a request on the queue try to get it running */
188 mtx_lock(&ch->queue_mtx);
189 if ((request = TAILQ_FIRST(&ch->ata_queue))) {
191 /* we need the locking function to get the lock for this channel */
192 if (ATA_LOCKING(dev, ATA_LF_LOCK) == ch->unit) {
194 /* check for composite dependencies */
195 if ((cptr = request->composite)) {
196 mtx_lock(&cptr->lock);
197 if ((request->flags & ATA_R_WRITE) &&
198 (cptr->wr_depend & cptr->rd_done) != cptr->wr_depend) {
201 mtx_unlock(&cptr->lock);
204 /* check we are in the right state and has no dependencies */
205 mtx_lock(&ch->state_mtx);
206 if (ch->state == ATA_IDLE && !dependencies) {
207 ATA_DEBUG_RQ(request, "starting");
208 TAILQ_REMOVE(&ch->ata_queue, request, chain);
209 ch->running = request;
210 ch->state = ATA_ACTIVE;
212 /* if we are the freezing point release it */
213 if (ch->freezepoint == request)
214 ch->freezepoint = NULL;
216 if (ch->hw.begin_transaction(request) == ATA_OP_FINISHED) {
218 ch->state = ATA_IDLE;
219 mtx_unlock(&ch->state_mtx);
220 mtx_unlock(&ch->queue_mtx);
221 ATA_LOCKING(dev, ATA_LF_UNLOCK);
226 mtx_unlock(&ch->state_mtx);
229 mtx_unlock(&ch->queue_mtx);
231 while (ch->running) {
239 ata_finish(struct ata_request *request)
241 struct ata_channel *ch = device_get_softc(request->parent);
244 * if in ATA_STALL_QUEUE state or request has ATA_R_DIRECT flags set
245 * we need to call ata_complete() directly here (no taskqueue involvement)
248 (ch->state & ATA_STALL_QUEUE) || (request->flags & ATA_R_DIRECT)) {
249 ATA_DEBUG_RQ(request, "finish directly");
250 ata_completed(request, 0);
253 /* put request on the proper taskqueue for completion */
254 if (request->bio && !(request->flags & (ATA_R_THREAD | ATA_R_TIMEOUT))){
255 ATA_DEBUG_RQ(request, "finish bio_taskqueue");
256 bio_taskqueue(request->bio, (bio_task_t *)ata_completed, request);
259 TASK_INIT(&request->task, 0, ata_completed, request);
260 ATA_DEBUG_RQ(request, "finish taskqueue_swi");
261 taskqueue_enqueue(taskqueue_swi, &request->task);
267 ata_completed(void *context, int dummy)
269 struct ata_request *request = (struct ata_request *)context;
270 struct ata_channel *ch = device_get_softc(request->parent);
271 struct ata_device *atadev = device_get_softc(request->dev);
272 struct ata_composite *composite;
274 if (request->flags & ATA_R_DANGER2) {
275 device_printf(request->dev,
276 "WARNING - %s freeing taskqueue zombie request\n",
277 ata_cmd2str(request));
278 request->flags &= ~(ATA_R_DANGER1 | ATA_R_DANGER2);
279 ata_free_request(request);
282 if (request->flags & ATA_R_DANGER1)
283 request->flags |= ATA_R_DANGER2;
285 ATA_DEBUG_RQ(request, "completed entered");
287 /* if we had a timeout, reinit channel and deal with the falldown */
288 if (request->flags & ATA_R_TIMEOUT) {
290 * if the channel is still present and
291 * reinit succeeds and
292 * the device doesn't get detached and
293 * there are retries left we reinject this request
295 if (ch && !ata_reinit(ch->dev) && !request->result &&
296 (request->retries-- > 0)) {
297 if (!(request->flags & ATA_R_QUIET)) {
298 device_printf(request->dev,
299 "TIMEOUT - %s retrying (%d retr%s left)",
300 ata_cmd2str(request), request->retries,
301 request->retries == 1 ? "y" : "ies");
302 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL)))
303 printf(" LBA=%ju", request->u.ata.lba);
306 request->flags &= ~(ATA_R_TIMEOUT | ATA_R_DEBUG);
307 request->flags |= (ATA_R_AT_HEAD | ATA_R_REQUEUE);
308 ATA_DEBUG_RQ(request, "completed reinject");
309 ata_queue_request(request);
313 /* ran out of good intentions so finish with error */
314 if (!request->result) {
315 if (!(request->flags & ATA_R_QUIET)) {
317 device_printf(request->dev, "FAILURE - %s timed out",
318 ata_cmd2str(request));
319 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL)))
320 printf(" LBA=%ju", request->u.ata.lba);
324 request->result = EIO;
327 else if (!(request->flags & ATA_R_ATAPI) ){
328 /* if this is a soft ECC error warn about it */
329 /* XXX SOS we could do WARF here */
330 if ((request->status & (ATA_S_CORR | ATA_S_ERROR)) == ATA_S_CORR) {
331 device_printf(request->dev,
332 "WARNING - %s soft error (ECC corrected)",
333 ata_cmd2str(request));
334 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL)))
335 printf(" LBA=%ju", request->u.ata.lba);
339 /* if this is a UDMA CRC error we reinject if there are retries left */
340 if (request->flags & ATA_R_DMA && request->error & ATA_E_ICRC) {
341 if (request->retries-- > 0) {
342 device_printf(request->dev,
343 "WARNING - %s UDMA ICRC error (retrying request)",
344 ata_cmd2str(request));
345 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL)))
346 printf(" LBA=%ju", request->u.ata.lba);
348 request->flags |= (ATA_R_AT_HEAD | ATA_R_REQUEUE);
349 ata_queue_request(request);
355 switch (request->flags & ATA_R_ATAPI) {
359 if (!request->result && request->status & ATA_S_ERROR) {
360 if (!(request->flags & ATA_R_QUIET)) {
361 device_printf(request->dev,
362 "FAILURE - %s status=%b error=%b",
363 ata_cmd2str(request),
364 request->status, "\20\10BUSY\7READY\6DMA_READY"
365 "\5DSC\4DRQ\3CORRECTABLE\2INDEX\1ERROR",
366 request->error, "\20\10ICRC\7UNCORRECTABLE"
367 "\6MEDIA_CHANGED\5NID_NOT_FOUND"
368 "\4MEDIA_CHANGE_REQEST"
369 "\3ABORTED\2NO_MEDIA\1ILLEGAL_LENGTH");
370 if ((request->flags & ATA_R_DMA) && request->dma &&
371 (request->dma->status & ATA_BMSTAT_ERROR))
372 printf(" dma=0x%02x", request->dma->status);
373 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL)))
374 printf(" LBA=%ju", request->u.ata.lba);
377 request->result = EIO;
383 /* skip if result already set */
387 /* if we have a sensekey -> request sense from device */
388 if ((request->error & ATA_E_ATAPI_SENSE_MASK) &&
389 (request->u.atapi.ccb[0] != ATAPI_REQUEST_SENSE)) {
390 static u_int8_t ccb[16] = { ATAPI_REQUEST_SENSE, 0, 0, 0,
391 sizeof(struct atapi_sense),
392 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
394 request->u.atapi.saved_cmd = request->u.atapi.ccb[0];
395 bcopy(ccb, request->u.atapi.ccb, 16);
396 request->data = (caddr_t)&request->u.atapi.sense;
397 request->bytecount = sizeof(struct atapi_sense);
398 request->donecount = 0;
399 request->transfersize = sizeof(struct atapi_sense);
400 request->timeout = ATA_REQUEST_TIMEOUT;
401 request->flags &= (ATA_R_ATAPI | ATA_R_QUIET | ATA_R_DEBUG);
402 request->flags |= (ATA_R_READ | ATA_R_AT_HEAD | ATA_R_REQUEUE);
403 ATA_DEBUG_RQ(request, "autoissue request sense");
404 ata_queue_request(request);
408 switch (request->u.atapi.sense.key & ATA_SENSE_KEY_MASK) {
409 case ATA_SENSE_RECOVERED_ERROR:
410 device_printf(request->dev, "WARNING - %s recovered error\n",
411 ata_cmd2str(request));
414 case ATA_SENSE_NO_SENSE:
418 case ATA_SENSE_NOT_READY:
419 request->result = EBUSY;
422 case ATA_SENSE_UNIT_ATTENTION:
423 atadev->flags |= ATA_D_MEDIA_CHANGED;
424 request->result = EIO;
428 request->result = EIO;
429 if (request->flags & ATA_R_QUIET)
432 device_printf(request->dev,
433 "FAILURE - %s %s asc=0x%02x ascq=0x%02x ",
434 ata_cmd2str(request), ata_skey2str(
435 (request->u.atapi.sense.key & ATA_SENSE_KEY_MASK)),
436 request->u.atapi.sense.asc,
437 request->u.atapi.sense.ascq);
438 if (request->u.atapi.sense.specific & ATA_SENSE_SPEC_VALID)
439 printf("sks=0x%02x 0x%02x 0x%02x\n",
440 request->u.atapi.sense.specific & ATA_SENSE_SPEC_MASK,
441 request->u.atapi.sense.specific1,
442 request->u.atapi.sense.specific2);
447 if (!request->result &&
448 (request->u.atapi.sense.key & ATA_SENSE_KEY_MASK ||
450 request->result = EIO;
453 ATA_DEBUG_RQ(request, "completed callback/wakeup");
455 /* if we are part of a composite operation we need to maintain progress */
456 if ((composite = request->composite)) {
459 mtx_lock(&composite->lock);
461 /* update whats done */
462 if (request->flags & ATA_R_READ)
463 composite->rd_done |= (1 << request->this);
464 if (request->flags & ATA_R_WRITE)
465 composite->wr_done |= (1 << request->this);
467 /* find ready to go dependencies */
468 if (composite->wr_depend &&
469 (composite->rd_done & composite->wr_depend)==composite->wr_depend &&
470 (composite->wr_needed & (~composite->wr_done))) {
471 index = composite->wr_needed & ~composite->wr_done;
474 mtx_unlock(&composite->lock);
476 /* if we have any ready candidates kick them off */
480 for (bit = 0; bit < MAX_COMPOSITES; bit++) {
481 if (index & (1 << bit))
482 ata_start(device_get_parent(composite->request[bit]->dev));
487 /* get results back to the initiator for this request */
488 if (request->callback)
489 (request->callback)(request);
491 sema_post(&request->done);
493 /* only call ata_start if channel is present */
499 ata_timeout(struct ata_request *request)
501 struct ata_channel *ch = device_get_softc(request->parent);
503 //request->flags |= ATA_R_DEBUG;
504 ATA_DEBUG_RQ(request, "timeout");
507 * if we have an ATA_ACTIVE request running, we flag the request
508 * ATA_R_TIMEOUT so ata_finish will handle it correctly
509 * also NULL out the running request so we wont loose
510 * the race with an eventual interrupt arriving late
512 if (ch->state == ATA_ACTIVE) {
513 request->flags |= ATA_R_TIMEOUT;
515 ch->dma.unload(request);
517 ch->state = ATA_IDLE;
519 ata_cam_end_transaction(ch->dev, request);
521 mtx_unlock(&ch->state_mtx);
522 ATA_LOCKING(ch->dev, ATA_LF_UNLOCK);
528 mtx_unlock(&ch->state_mtx);
533 ata_fail_requests(device_t dev)
535 struct ata_channel *ch = device_get_softc(device_get_parent(dev));
536 struct ata_request *request, *tmp;
537 TAILQ_HEAD(, ata_request) fail_requests;
538 TAILQ_INIT(&fail_requests);
540 /* grap all channel locks to avoid races */
541 mtx_lock(&ch->queue_mtx);
542 mtx_lock(&ch->state_mtx);
544 /* do we have any running request to care about ? */
545 if ((request = ch->running) && (!dev || request->dev == dev)) {
546 callout_stop(&request->callout);
548 request->result = ENXIO;
549 TAILQ_INSERT_TAIL(&fail_requests, request, chain);
552 /* fail all requests queued on this channel for device dev if !NULL */
553 TAILQ_FOREACH_SAFE(request, &ch->ata_queue, chain, tmp) {
554 if (!dev || request->dev == dev) {
555 TAILQ_REMOVE(&ch->ata_queue, request, chain);
556 request->result = ENXIO;
557 TAILQ_INSERT_TAIL(&fail_requests, request, chain);
561 mtx_unlock(&ch->state_mtx);
562 mtx_unlock(&ch->queue_mtx);
564 /* finish up all requests collected above */
565 TAILQ_FOREACH_SAFE(request, &fail_requests, chain, tmp) {
566 TAILQ_REMOVE(&fail_requests, request, chain);
572 * Rudely drop all requests queued to the channel of specified device.
573 * XXX: The requests are leaked, use only in fatal case.
576 ata_drop_requests(device_t dev)
578 struct ata_channel *ch = device_get_softc(device_get_parent(dev));
579 struct ata_request *request, *tmp;
581 mtx_lock(&ch->queue_mtx);
582 TAILQ_FOREACH_SAFE(request, &ch->ata_queue, chain, tmp) {
583 TAILQ_REMOVE(&ch->ata_queue, request, chain);
584 request->result = ENXIO;
586 mtx_unlock(&ch->queue_mtx);
590 ata_get_lba(struct ata_request *request)
592 if (request->flags & ATA_R_ATAPI) {
593 switch (request->u.atapi.ccb[0]) {
595 case ATAPI_WRITE_BIG:
597 return (request->u.atapi.ccb[5]) | (request->u.atapi.ccb[4]<<8) |
598 (request->u.atapi.ccb[3]<<16)|(request->u.atapi.ccb[2]<<24);
601 return (request->u.atapi.ccb[4]) | (request->u.atapi.ccb[3]<<8) |
602 (request->u.atapi.ccb[2]<<16);
608 return request->u.ata.lba;
612 ata_sort_queue(struct ata_channel *ch, struct ata_request *request)
614 struct ata_request *this, *next;
616 this = TAILQ_FIRST(&ch->ata_queue);
618 /* if the queue is empty just insert */
620 if (request->composite)
621 ch->freezepoint = request;
622 TAILQ_INSERT_TAIL(&ch->ata_queue, request, chain);
626 /* dont sort frozen parts of the queue */
628 this = ch->freezepoint;
630 /* if position is less than head we add after tipping point */
631 if (ata_get_lba(request) < ata_get_lba(this)) {
632 while ((next = TAILQ_NEXT(this, chain))) {
634 /* have we reached the tipping point */
635 if (ata_get_lba(next) < ata_get_lba(this)) {
637 /* sort the insert */
639 if (ata_get_lba(request) < ata_get_lba(next))
642 } while ((next = TAILQ_NEXT(this, chain)));
649 /* we are after head so sort the insert before tipping point */
651 while ((next = TAILQ_NEXT(this, chain))) {
652 if (ata_get_lba(next) < ata_get_lba(this) ||
653 ata_get_lba(request) < ata_get_lba(next))
659 if (request->composite)
660 ch->freezepoint = request;
661 TAILQ_INSERT_AFTER(&ch->ata_queue, this, request, chain);
665 ata_cmd2str(struct ata_request *request)
667 static char buffer[20];
669 if (request->flags & ATA_R_ATAPI) {
670 switch (request->u.atapi.sense.key ?
671 request->u.atapi.saved_cmd : request->u.atapi.ccb[0]) {
672 case 0x00: return ("TEST_UNIT_READY");
673 case 0x01: return ("REZERO");
674 case 0x03: return ("REQUEST_SENSE");
675 case 0x04: return ("FORMAT");
676 case 0x08: return ("READ");
677 case 0x0a: return ("WRITE");
678 case 0x10: return ("WEOF");
679 case 0x11: return ("SPACE");
680 case 0x12: return ("INQUIRY");
681 case 0x15: return ("MODE_SELECT");
682 case 0x19: return ("ERASE");
683 case 0x1a: return ("MODE_SENSE");
684 case 0x1b: return ("START_STOP");
685 case 0x1e: return ("PREVENT_ALLOW");
686 case 0x23: return ("ATAPI_READ_FORMAT_CAPACITIES");
687 case 0x25: return ("READ_CAPACITY");
688 case 0x28: return ("READ_BIG");
689 case 0x2a: return ("WRITE_BIG");
690 case 0x2b: return ("LOCATE");
691 case 0x34: return ("READ_POSITION");
692 case 0x35: return ("SYNCHRONIZE_CACHE");
693 case 0x3b: return ("WRITE_BUFFER");
694 case 0x3c: return ("READ_BUFFER");
695 case 0x42: return ("READ_SUBCHANNEL");
696 case 0x43: return ("READ_TOC");
697 case 0x45: return ("PLAY_10");
698 case 0x47: return ("PLAY_MSF");
699 case 0x48: return ("PLAY_TRACK");
700 case 0x4b: return ("PAUSE");
701 case 0x51: return ("READ_DISK_INFO");
702 case 0x52: return ("READ_TRACK_INFO");
703 case 0x53: return ("RESERVE_TRACK");
704 case 0x54: return ("SEND_OPC_INFO");
705 case 0x55: return ("MODE_SELECT_BIG");
706 case 0x58: return ("REPAIR_TRACK");
707 case 0x59: return ("READ_MASTER_CUE");
708 case 0x5a: return ("MODE_SENSE_BIG");
709 case 0x5b: return ("CLOSE_TRACK/SESSION");
710 case 0x5c: return ("READ_BUFFER_CAPACITY");
711 case 0x5d: return ("SEND_CUE_SHEET");
712 case 0x96: return ("SERVICE_ACTION_IN");
713 case 0xa1: return ("BLANK_CMD");
714 case 0xa3: return ("SEND_KEY");
715 case 0xa4: return ("REPORT_KEY");
716 case 0xa5: return ("PLAY_12");
717 case 0xa6: return ("LOAD_UNLOAD");
718 case 0xad: return ("READ_DVD_STRUCTURE");
719 case 0xb4: return ("PLAY_CD");
720 case 0xbb: return ("SET_SPEED");
721 case 0xbd: return ("MECH_STATUS");
722 case 0xbe: return ("READ_CD");
723 case 0xff: return ("POLL_DSC");
727 switch (request->u.ata.command) {
728 case 0x00: return ("NOP");
729 case 0x08: return ("DEVICE_RESET");
730 case 0x20: return ("READ");
731 case 0x24: return ("READ48");
732 case 0x25: return ("READ_DMA48");
733 case 0x26: return ("READ_DMA_QUEUED48");
734 case 0x27: return ("READ_NATIVE_MAX_ADDRESS48");
735 case 0x29: return ("READ_MUL48");
736 case 0x30: return ("WRITE");
737 case 0x34: return ("WRITE48");
738 case 0x35: return ("WRITE_DMA48");
739 case 0x36: return ("WRITE_DMA_QUEUED48");
740 case 0x37: return ("SET_MAX_ADDRESS48");
741 case 0x39: return ("WRITE_MUL48");
742 case 0x70: return ("SEEK");
743 case 0xa0: return ("PACKET_CMD");
744 case 0xa1: return ("ATAPI_IDENTIFY");
745 case 0xa2: return ("SERVICE");
746 case 0xb0: return ("SMART");
747 case 0xc0: return ("CFA ERASE");
748 case 0xc4: return ("READ_MUL");
749 case 0xc5: return ("WRITE_MUL");
750 case 0xc6: return ("SET_MULTI");
751 case 0xc7: return ("READ_DMA_QUEUED");
752 case 0xc8: return ("READ_DMA");
753 case 0xca: return ("WRITE_DMA");
754 case 0xcc: return ("WRITE_DMA_QUEUED");
755 case 0xe6: return ("SLEEP");
756 case 0xe7: return ("FLUSHCACHE");
757 case 0xea: return ("FLUSHCACHE48");
758 case 0xec: return ("ATA_IDENTIFY");
760 switch (request->u.ata.feature) {
761 case 0x03: return ("SETFEATURES SET TRANSFER MODE");
762 case 0x02: return ("SETFEATURES ENABLE WCACHE");
763 case 0x82: return ("SETFEATURES DISABLE WCACHE");
764 case 0xaa: return ("SETFEATURES ENABLE RCACHE");
765 case 0x55: return ("SETFEATURES DISABLE RCACHE");
767 sprintf(buffer, "SETFEATURES 0x%02x", request->u.ata.feature);
769 case 0xf5: return ("SECURITY_FREE_LOCK");
770 case 0xf8: return ("READ_NATIVE_MAX_ADDRESS");
771 case 0xf9: return ("SET_MAX_ADDRESS");
774 sprintf(buffer, "unknown CMD (0x%02x)", request->u.ata.command);
779 ata_skey2str(u_int8_t skey)
782 case 0x00: return ("NO SENSE");
783 case 0x01: return ("RECOVERED ERROR");
784 case 0x02: return ("NOT READY");
785 case 0x03: return ("MEDIUM ERROR");
786 case 0x04: return ("HARDWARE ERROR");
787 case 0x05: return ("ILLEGAL REQUEST");
788 case 0x06: return ("UNIT ATTENTION");
789 case 0x07: return ("DATA PROTECT");
790 case 0x08: return ("BLANK CHECK");
791 case 0x09: return ("VENDOR SPECIFIC");
792 case 0x0a: return ("COPY ABORTED");
793 case 0x0b: return ("ABORTED COMMAND");
794 case 0x0c: return ("EQUAL");
795 case 0x0d: return ("VOLUME OVERFLOW");
796 case 0x0e: return ("MISCOMPARE");
797 case 0x0f: return ("RESERVED");
798 default: return("UNKNOWN");