2 * Copyright (c) 1998,1999,2000,2001,2002 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.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 * $FreeBSD: src/sys/dev/ata/atapi-all.c,v 1.46.2.18 2002/10/31 23:10:33 thomas Exp $
29 * $DragonFly: src/sys/dev/disk/ata/atapi-all.c,v 1.8 2004/02/18 02:47:38 dillon Exp $
33 #include "use_atapicd.h"
34 #include "use_atapifd.h"
35 #include "use_atapist.h"
36 #include "use_atapicam.h"
38 #include <sys/param.h>
39 #include <sys/systm.h>
41 #include <sys/kernel.h>
43 #include <sys/malloc.h>
45 #include <sys/sysctl.h>
46 #include <machine/bus.h>
47 #include <machine/clock.h>
50 #include "atapi-all.h"
53 static void atapi_read(struct atapi_request *, int);
54 static void atapi_write(struct atapi_request *, int);
55 static void atapi_finish(struct atapi_request *);
56 static void atapi_timeout(struct atapi_request *);
57 static char *atapi_cmd2str(u_int8_t);
58 static char *atapi_skey2str(u_int8_t);
61 #define ATAPI_MAX_RETRIES 3
64 static int atapi_dma = 0;
65 TUNABLE_INT("hw.ata.atapi_dma", &atapi_dma);
66 static MALLOC_DEFINE(M_ATAPI, "ATAPI generic", "ATAPI driver generic layer");
70 SYSCTL_INT(_hw_ata, OID_AUTO, atapi_dma, CTLFLAG_RD, &atapi_dma, 0,
71 "ATAPI device DMA mode control");
74 atapi_attach(struct ata_device *atadev, int alreadylocked)
77 ata_prtdev(atadev, "piomode=%d dmamode=%d udmamode=%d dmaflag=%d\n",
78 ata_pmode(atadev->param), ata_wmode(atadev->param),
79 ata_umode(atadev->param), atadev->param->support_dma);
82 ATA_SLEEPLOCK_CH(atadev->channel, ATA_CONTROL);
83 if (atapi_dma && !(atadev->param->drq_type == ATAPI_DRQT_INTR)) {
85 (ata_pmode(atadev->param) < 0) ?
86 (atadev->param->support_dma ? 4:0):ata_pmode(atadev->param),
87 (ata_wmode(atadev->param) < 0) ?
88 (atadev->param->support_dma ? 2:0):ata_wmode(atadev->param),
89 ata_umode(atadev->param));
93 ata_pmode(atadev->param) < 0 ? 0 : ata_pmode(atadev->param),
95 ATA_UNLOCK_CH(atadev->channel);
97 if (!(atadev->result = malloc(sizeof(struct atapi_reqsense), M_ATAPI,
99 ata_prtdev(atadev, "no memory for sense data\n");
101 switch (atadev->param->type) {
103 case ATAPI_TYPE_CDROM:
104 if (acdattach(atadev))
109 case ATAPI_TYPE_DIRECT:
110 if (afdattach(atadev))
115 case ATAPI_TYPE_TAPE:
116 if (astattach(atadev))
122 ata_prtdev(atadev, "<%.40s/%.8s> - NO DRIVER!\n",
123 atadev->param->model, atadev->param->revision);
124 free(atadev->result, M_ATAPI);
125 atadev->driver = NULL;
130 atapi_detach(struct ata_device *atadev)
132 struct atapi_request *request;
134 atadev->flags |= ATA_D_DETACHING;
135 ata_prtdev(atadev, "removed from configuration\n");
136 switch (atadev->param->type) {
138 case ATAPI_TYPE_CDROM:
143 case ATAPI_TYPE_DIRECT:
148 case ATAPI_TYPE_TAPE:
155 TAILQ_FOREACH(request, &atadev->channel->atapi_queue, chain) {
156 if (request->device != atadev)
158 TAILQ_REMOVE(&atadev->channel->atapi_queue, request, chain);
159 if (request->driver) {
160 struct buf *bp = (struct buf *) request->driver;
161 bp->b_flags |= B_ERROR;
166 free(request, M_ATAPI);
168 free(atadev->result, M_ATAPI);
169 atadev->driver = NULL;
175 atapi_queue_cmd(struct ata_device *atadev, int8_t *ccb, caddr_t data,
176 int count, int flags, int timeout,
177 atapi_callback_t callback, void *driver)
179 struct atapi_request *request;
182 request = malloc(sizeof(struct atapi_request), M_ATAPI, M_NOWAIT|M_ZERO);
183 if (request == NULL) {
184 printf("WARNNIG: atapi_queue_cmd: malloc() would block\n");
185 request = malloc(sizeof(struct atapi_request), M_ATAPI, M_WAITOK|M_ZERO);
188 request->device = atadev;
189 request->data = data;
190 request->bytecount = count;
191 request->flags = flags;
192 request->error = EINPROGRESS;
193 request->timeout = timeout * hz;
194 request->ccbsize = atadev->param->packet_size ? 16 : 12;
195 bcopy(ccb, request->ccb, request->ccbsize);
197 request->callback = callback;
198 request->driver = driver;
200 if (atadev->mode >= ATA_DMA) {
201 if (ata_dmaalloc(atadev, M_NOWAIT) != 0) {
202 printf("WARNING: atapi_queue_cmd: ata_dmaalloc() would block\n");
203 error = ata_dmaalloc(atadev, M_WAITOK);
204 KKASSERT(error != 0);
209 ata_prtdev(atadev, "queueing %s ", atapi_cmd2str(request->ccb[0]));
210 atapi_dump("ccb = ", &request->ccb[0], sizeof(request->ccb));
212 /* append onto controller queue and try to start controller */
214 if (flags & ATPR_F_AT_HEAD)
215 TAILQ_INSERT_HEAD(&atadev->channel->atapi_queue, request, chain);
217 TAILQ_INSERT_TAIL(&atadev->channel->atapi_queue, request, chain);
218 ata_start(atadev->channel);
220 /* if callback used, then just return, gets called from interrupt context */
226 /* only sleep when command is in progress */
227 if (request->error == EINPROGRESS)
228 tsleep((caddr_t)request, 0, "atprq", 0);
230 error = request->error;
232 bcopy(&request->sense, atadev->result, sizeof(struct atapi_reqsense));
234 free(request, M_ATAPI);
239 atapi_start(struct ata_device *atadev)
241 switch (atadev->param->type) {
243 case ATAPI_TYPE_CDROM:
248 case ATAPI_TYPE_DIRECT:
253 case ATAPI_TYPE_TAPE:
263 atapi_transfer(struct atapi_request *request)
265 struct ata_device *atadev = request->device;
270 ata_prtdev(atadev, "starting %s ", atapi_cmd2str(request->ccb[0]));
271 atapi_dump("ccb = ", &request->ccb[0], sizeof(request->ccb));
273 /* is this just a POLL DSC command ? */
274 if (request->ccb[0] == ATAPI_POLL_DSC) {
275 ATA_OUTB(atadev->channel->r_io, ATA_DRIVE, ATA_D_IBM | atadev->unit);
277 if (ATA_INB(atadev->channel->r_altio, ATA_ALTSTAT) & ATA_S_DSC)
280 request->error = EBUSY;
281 atapi_finish(request);
282 return ATA_OP_FINISHED;
285 /* start timeout for this command */
286 request->timeout_handle = timeout((timeout_t *)atapi_timeout,
287 request, request->timeout);
289 if (!(request->flags & ATPR_F_INTERNAL))
290 atadev->cmd = request->ccb[0];
292 /* if DMA enabled setup DMA hardware */
293 request->flags &= ~ATPR_F_DMA_USED;
294 if ((atadev->mode >= ATA_DMA) &&
295 (request->ccb[0] == ATAPI_READ ||
296 request->ccb[0] == ATAPI_READ_BIG ||
297 request->ccb[0] == ATAPI_READ_CD ||
298 ((request->ccb[0] == ATAPI_WRITE ||
299 request->ccb[0] == ATAPI_WRITE_BIG) &&
300 !(atadev->channel->flags & ATA_ATAPI_DMA_RO))) &&
301 !ata_dmasetup(atadev, (void *)request->data, request->bytecount)) {
302 request->flags |= ATPR_F_DMA_USED;
305 /* start ATAPI operation */
306 if (ata_command(atadev, ATA_C_PACKET_CMD,
307 min(request->bytecount, 65534) << 8, 0,
308 (request->flags & ATPR_F_DMA_USED) ? ATA_F_DMA : 0,
310 ata_prtdev(atadev, "failure to send ATAPI packet command\n");
312 if (request->flags & ATPR_F_DMA_USED)
313 ata_dmastart(atadev, request->data, request->bytecount,
314 request->flags & ATPR_F_READ);
316 /* command interrupt device ? just return */
317 if (atadev->param->drq_type == ATAPI_DRQT_INTR)
318 return ATA_OP_CONTINUES;
320 /* ready to write ATAPI command */
321 timout = 5000; /* might be less for fast devices */
323 reason = ATA_INB(atadev->channel->r_io, ATA_IREASON);
324 atadev->channel->status = ATA_INB(atadev->channel->r_io, ATA_STATUS);
325 if (((reason & (ATA_I_CMD | ATA_I_IN)) |
326 (atadev->channel->status&(ATA_S_DRQ|ATA_S_BUSY)))==ATAPI_P_CMDOUT)
331 ata_prtdev(atadev, "failure to execute ATAPI packet command\n");
332 untimeout((timeout_t *)atapi_timeout, request, request->timeout_handle);
333 request->error = EIO;
334 atapi_finish(request);
335 return ATA_OP_FINISHED;
338 /* this seems to be needed for some (slow) devices */
341 /* send actual command */
342 ATA_OUTSW(atadev->channel->r_io, ATA_DATA, (int16_t *)request->ccb,
343 request->ccbsize / sizeof(int16_t));
344 return ATA_OP_CONTINUES;
348 atapi_interrupt(struct atapi_request *request)
350 struct ata_device *atadev = request->device;
351 int reason, dma_stat = 0;
353 reason = (ATA_INB(atadev->channel->r_io, ATA_IREASON)&(ATA_I_CMD|ATA_I_IN))|
354 (atadev->channel->status & ATA_S_DRQ);
356 if (reason == ATAPI_P_CMDOUT) {
357 if (!(atadev->channel->status & ATA_S_DRQ)) {
358 ata_prtdev(atadev, "command interrupt without DRQ\n");
359 untimeout((timeout_t *)atapi_timeout,
360 request, request->timeout_handle);
361 request->error = EIO;
362 atapi_finish(request);
363 return ATA_OP_FINISHED;
365 ATA_OUTSW(atadev->channel->r_io, ATA_DATA, (int16_t *)request->ccb,
366 request->ccbsize / sizeof(int16_t));
367 return ATA_OP_CONTINUES;
370 if (request->flags & ATPR_F_DMA_USED) {
371 dma_stat = ata_dmadone(atadev);
372 if ((atadev->channel->status & (ATA_S_ERROR | ATA_S_DWF)) ||
373 dma_stat & ATA_BMSTAT_ERROR) {
374 request->result = ATA_INB(atadev->channel->r_io, ATA_ERROR);
378 request->donecount = request->bytecount;
379 request->bytecount = 0;
383 int length = ATA_INB(atadev->channel->r_io, ATA_CYL_LSB) |
384 ATA_INB(atadev->channel->r_io, ATA_CYL_MSB) << 8;
388 if (request->flags & ATPR_F_READ) {
389 request->result = ATA_INB(atadev->channel->r_io, ATA_ERROR);
390 ata_prtdev(atadev, "%s trying to write on read buffer\n",
391 atapi_cmd2str(atadev->cmd));
394 atapi_write(request, length);
395 return ATA_OP_CONTINUES;
398 if (!(request->flags & ATPR_F_READ)) {
399 request->result = ATA_INB(atadev->channel->r_io, ATA_ERROR);
400 ata_prtdev(atadev, "%s trying to read on write buffer\n",
401 atapi_cmd2str(atadev->cmd));
404 atapi_read(request, length);
405 return ATA_OP_CONTINUES;
407 case ATAPI_P_DONEDRQ:
408 ata_prtdev(atadev, "%s DONEDRQ\n", atapi_cmd2str(atadev->cmd));
409 if (request->flags & ATPR_F_READ)
410 atapi_read(request, length);
412 atapi_write(request, length);
417 if (atadev->channel->status & (ATA_S_ERROR | ATA_S_DWF))
418 request->result = ATA_INB(atadev->channel->r_io, ATA_ERROR);
420 if (!(request->flags & ATPR_F_INTERNAL))
425 ata_prtdev(atadev, "unknown transfer phase %d\n", reason);
428 untimeout((timeout_t *)atapi_timeout, request, request->timeout_handle);
430 /* check for error, if valid sense key, queue a request sense cmd */
431 if ((request->result & ATAPI_SK_MASK) &&
432 request->ccb[0] != ATAPI_REQUEST_SENSE) {
433 bzero(request->ccb, request->ccbsize);
434 request->ccb[0] = ATAPI_REQUEST_SENSE;
435 request->ccb[4] = sizeof(struct atapi_reqsense);
436 request->bytecount = sizeof(struct atapi_reqsense);
437 request->flags &= ATPR_F_QUIET;
438 request->flags |= ATPR_F_READ | ATPR_F_INTERNAL;
439 TAILQ_INSERT_HEAD(&atadev->channel->atapi_queue, request, chain);
442 if (request->result) {
443 switch ((request->result & ATAPI_SK_MASK)) {
444 case ATAPI_SK_NO_SENSE:
448 case ATAPI_SK_RECOVERED_ERROR:
449 ata_prtdev(atadev, "%s - recovered error\n",
450 atapi_cmd2str(atadev->cmd));
454 case ATAPI_SK_NOT_READY:
455 request->error = EBUSY;
458 case ATAPI_SK_UNIT_ATTENTION:
459 atadev->flags |= ATA_D_MEDIA_CHANGED;
460 request->error = EIO;
464 request->error = EIO;
466 if (request->flags & ATPR_F_QUIET)
469 ata_prtdev(atadev, "%s - %s asc=0x%02x ascq=0x%02x ",
470 atapi_cmd2str(atadev->cmd),
471 atapi_skey2str(request->sense.sense_key),
472 request->sense.asc, request->sense.ascq);
473 if (request->sense.sksv)
474 printf("sks=0x%02x 0x%02x 0x%02x ",
475 request->sense.sk_specific,
476 request->sense.sk_specific1,
477 request->sense.sk_specific2);
478 printf("error=0x%02x\n", request->result & ATAPI_E_MASK);
483 atapi_finish(request);
485 return ATA_OP_FINISHED;
489 atapi_reinit(struct ata_device *atadev)
491 /* reinit device parameters */
492 if (atadev->mode >= ATA_DMA)
494 (ata_pmode(atadev->param) < 0) ?
495 (atadev->param->support_dma ? 4:0):ata_pmode(atadev->param),
496 (ata_wmode(atadev->param) < 0) ?
497 (atadev->param->support_dma ? 2:0):ata_wmode(atadev->param),
498 ata_umode(atadev->param));
501 ata_pmode(atadev->param)<0 ? 0 : ata_pmode(atadev->param),
506 atapi_test_ready(struct ata_device *atadev)
508 int8_t ccb[16] = { ATAPI_TEST_UNIT_READY, 0, 0, 0, 0,
509 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
511 return atapi_queue_cmd(atadev, ccb, NULL, 0, 0, 30, NULL, NULL);
515 atapi_wait_dsc(struct ata_device *atadev, int timeout)
518 int8_t ccb[16] = { ATAPI_POLL_DSC, 0, 0, 0, 0,
519 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
522 while (timeout > 0) {
523 error = atapi_queue_cmd(atadev, ccb, NULL, 0, 0, 0, NULL, NULL);
526 tsleep((caddr_t)&error, 0, "atpwt", hz / 2);
533 atapi_dump(char *label, void *data, int len)
537 printf("%s %02x", label, *p++);
539 printf ("-%02x", *p++);
544 atapi_read(struct atapi_request *request, int length)
546 int8_t **buffer = (int8_t **)&request->data;
547 int size = min(request->bytecount, length);
548 struct ata_channel *ch = request->device->channel;
551 if (request->flags & ATPR_F_INTERNAL)
552 *buffer = (int8_t *)&request->sense;
554 if (ch->flags & ATA_USE_16BIT || (size % sizeof(int32_t)))
555 ATA_INSW(ch->r_io, ATA_DATA, (void *)((uintptr_t)*buffer),
556 size / sizeof(int16_t));
558 ATA_INSL(ch->r_io, ATA_DATA, (void *)((uintptr_t)*buffer),
559 size / sizeof(int32_t));
561 if (request->bytecount < length) {
562 ata_prtdev(request->device, "read data overrun %d/%d\n",
563 length, request->bytecount);
564 for (resid=request->bytecount; resid<length; resid+=sizeof(int16_t))
565 ATA_INW(ch->r_io, ATA_DATA);
568 request->bytecount -= size;
569 request->donecount += size;
573 atapi_write(struct atapi_request *request, int length)
575 int8_t **buffer = (int8_t **)&request->data;
576 int size = min(request->bytecount, length);
577 struct ata_channel *ch = request->device->channel;
580 if (request->flags & ATPR_F_INTERNAL)
581 *buffer = (int8_t *)&request->sense;
583 if (ch->flags & ATA_USE_16BIT || (size % sizeof(int32_t)))
584 ATA_OUTSW(ch->r_io, ATA_DATA, (void *)((uintptr_t)*buffer),
585 size / sizeof(int16_t));
587 ATA_OUTSL(ch->r_io, ATA_DATA, (void *)((uintptr_t)*buffer),
588 size / sizeof(int32_t));
590 if (request->bytecount < length) {
591 ata_prtdev(request->device, "write data underrun %d/%d\n",
592 length, request->bytecount);
593 for (resid=request->bytecount; resid<length; resid+=sizeof(int16_t))
594 ATA_OUTW(ch->r_io, ATA_DATA, 0);
597 request->bytecount -= size;
598 request->donecount += size;
602 atapi_finish(struct atapi_request *request)
605 ata_prtdev(request->device, "finished %s%s\n",
606 request->callback ? "callback " : "",
607 atapi_cmd2str(request->ccb[0]));
609 if (request->callback) {
610 if (!((request->callback)(request))) {
611 ata_dmafree(request->device);
612 free(request, M_ATAPI);
616 wakeup((caddr_t)request);
620 atapi_timeout(struct atapi_request *request)
622 struct ata_device *atadev = request->device;
624 atadev->channel->running = NULL;
625 ata_prtdev(atadev, "%s command timeout - resetting\n",
626 atapi_cmd2str(request->ccb[0]));
628 if (request->flags & ATPR_F_DMA_USED) {
630 if (request->retries == ATAPI_MAX_RETRIES) {
632 (ata_pmode(atadev->param) < 0) ? 0 :
633 ata_pmode(atadev->param), -1, -1);
634 ata_prtdev(atadev, "trying fallback to PIO mode\n");
635 request->retries = 0;
639 /* if retries still permit, reinject this request */
640 if (request->retries++ < ATAPI_MAX_RETRIES) {
641 TAILQ_INSERT_HEAD(&atadev->channel->atapi_queue, request, chain);
644 /* retries all used up, return error */
645 request->error = EIO;
646 wakeup((caddr_t)request);
648 ata_reinit(atadev->channel);
652 atapi_cmd2str(u_int8_t cmd)
655 case 0x00: return ("TEST_UNIT_READY");
656 case 0x01: return ("REZERO");
657 case 0x03: return ("REQUEST_SENSE");
658 case 0x04: return ("FORMAT_UNIT");
659 case 0x08: return ("READ");
660 case 0x0a: return ("WRITE");
661 case 0x10: return ("WEOF");
662 case 0x11: return ("SPACE");
663 case 0x15: return ("MODE_SELECT");
664 case 0x19: return ("ERASE");
665 case 0x1a: return ("MODE_SENSE");
666 case 0x1b: return ("START_STOP");
667 case 0x1e: return ("PREVENT_ALLOW");
668 case 0x25: return ("READ_CAPACITY");
669 case 0x28: return ("READ_BIG");
670 case 0x2a: return ("WRITE_BIG");
671 case 0x2b: return ("LOCATE");
672 case 0x34: return ("READ_POSITION");
673 case 0x35: return ("SYNCHRONIZE_CACHE");
674 case 0x3b: return ("WRITE_BUFFER");
675 case 0x3c: return ("READ_BUFFER");
676 case 0x42: return ("READ_SUBCHANNEL");
677 case 0x43: return ("READ_TOC");
678 case 0x45: return ("PLAY_10");
679 case 0x47: return ("PLAY_MSF");
680 case 0x48: return ("PLAY_TRACK");
681 case 0x4b: return ("PAUSE");
682 case 0x51: return ("READ_DISK_INFO");
683 case 0x52: return ("READ_TRACK_INFO");
684 case 0x53: return ("RESERVE_TRACK");
685 case 0x54: return ("SEND_OPC_INFO");
686 case 0x55: return ("MODE_SELECT_BIG");
687 case 0x58: return ("REPAIR_TRACK");
688 case 0x59: return ("READ_MASTER_CUE");
689 case 0x5a: return ("MODE_SENSE_BIG");
690 case 0x5b: return ("CLOSE_TRACK/SESSION");
691 case 0x5c: return ("READ_BUFFER_CAPACITY");
692 case 0x5d: return ("SEND_CUE_SHEET");
693 case 0xa1: return ("BLANK_CMD");
694 case 0xa3: return ("SEND_KEY");
695 case 0xa4: return ("REPORT_KEY");
696 case 0xa5: return ("PLAY_12");
697 case 0xa6: return ("LOAD_UNLOAD");
698 case 0xad: return ("READ_DVD_STRUCTURE");
699 case 0xb4: return ("PLAY_CD");
700 case 0xbb: return ("SET_SPEED");
701 case 0xbd: return ("MECH_STATUS");
702 case 0xbe: return ("READ_CD");
703 case 0xff: return ("POLL_DSC");
705 static char buffer[20];
706 sprintf(buffer, "unknown CMD (0x%02x)", cmd);
713 atapi_skey2str(u_int8_t skey)
716 case 0x00: return ("NO SENSE");
717 case 0x01: return ("RECOVERED ERROR");
718 case 0x02: return ("NOT READY");
719 case 0x03: return ("MEDIUM ERROR");
720 case 0x04: return ("HARDWARE ERROR");
721 case 0x05: return ("ILLEGAL REQUEST");
722 case 0x06: return ("UNIT ATTENTION");
723 case 0x07: return ("DATA PROTECT");
724 case 0x08: return ("BLANK CHECK");
725 case 0x09: return ("VENDOR SPECIFIC");
726 case 0x0a: return ("COPY ABORTED");
727 case 0x0b: return ("ABORTED COMMAND");
728 case 0x0c: return ("EQUAL");
729 case 0x0d: return ("VOLUME OVERFLOW");
730 case 0x0e: return ("MISCOMPARE");
731 case 0x0f: return ("RESERVED");
732 default: return("UNKNOWN");