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/ata-disk.c,v 1.60.2.24 2003/01/30 07:19:59 sos Exp $
29 * $DragonFly: src/sys/dev/disk/ata/ata-disk.c,v 1.21 2004/08/17 20:59:39 dillon Exp $
33 #include <sys/param.h>
34 #include <sys/systm.h>
36 #include <sys/kernel.h>
37 #include <sys/malloc.h>
42 #include <sys/devicestat.h>
44 #include <sys/sysctl.h>
45 #include <sys/syslog.h>
48 #include <machine/md_var.h>
49 #include <machine/bus.h>
50 #include <machine/clock.h>
58 /* device structures */
59 static d_open_t adopen;
60 static d_close_t adclose;
61 static d_strategy_t adstrategy;
62 static d_dump_t addump;
64 static struct cdevsw ad_cdevsw = {
74 /* write */ physwrite,
78 /* strategy */ adstrategy,
84 static void ad_requeue(struct ata_channel *, struct ad_request *);
85 static void ad_invalidatequeue(struct ad_softc *, struct ad_request *);
86 static int ad_tagsupported(struct ad_softc *);
87 static void ad_timeout(struct ad_request *);
88 static void ad_free(struct ad_request *);
89 static int ad_version(u_int16_t);
92 #define AD_MAX_RETRIES 3
95 static u_int32_t adp_lun_map = 0;
96 static int ata_dma = 1;
97 static int ata_wc = 1;
98 static int ata_tags = 0;
99 TUNABLE_INT("hw.ata.ata_dma", &ata_dma);
100 TUNABLE_INT("hw.ata.wc", &ata_wc);
101 TUNABLE_INT("hw.ata.tags", &ata_tags);
102 static MALLOC_DEFINE(M_AD, "AD driver", "ATA disk driver");
105 SYSCTL_DECL(_hw_ata);
106 SYSCTL_INT(_hw_ata, OID_AUTO, ata_dma, CTLFLAG_RD, &ata_dma, 0,
107 "ATA disk DMA mode control");
108 SYSCTL_INT(_hw_ata, OID_AUTO, wc, CTLFLAG_RD, &ata_wc, 0,
109 "ATA disk write caching");
110 SYSCTL_INT(_hw_ata, OID_AUTO, tags, CTLFLAG_RD, &ata_tags, 0,
111 "ATA disk tagged queuing support");
114 ad_attach(struct ata_device *atadev, int alreadylocked)
116 struct ad_softc *adp;
119 adp = malloc(sizeof(struct ad_softc), M_AD, M_WAITOK | M_ZERO);
121 KKASSERT(atadev->channel->req_mpipe.max_count != 0);
123 adp->device = atadev;
125 adp->lun = (device_get_unit(atadev->channel->dev)<<1)+ATA_DEV(atadev->unit);
127 adp->lun = ata_get_lun(&adp_lun_map);
129 ata_set_name(atadev, "ad", adp->lun);
130 adp->heads = atadev->param->heads;
131 adp->sectors = atadev->param->sectors;
132 adp->total_secs = atadev->param->cylinders * adp->heads * adp->sectors;
133 bufq_init(&adp->queue);
135 /* does this device need oldstyle CHS addressing */
136 if (!ad_version(atadev->param->version_major) ||
137 !(atadev->param->atavalid & ATA_FLAG_54_58) || !atadev->param->lba_size)
138 adp->flags |= AD_F_CHS_USED;
140 /* use the 28bit LBA size if valid */
141 if (atadev->param->cylinders == 16383 &&
142 adp->total_secs < atadev->param->lba_size)
143 adp->total_secs = atadev->param->lba_size;
145 /* use the 48bit LBA size if valid */
146 if (atadev->param->support.address48 &&
147 atadev->param->lba_size48 > 268435455)
148 adp->total_secs = atadev->param->lba_size48;
151 ATA_SLEEPLOCK_CH(atadev->channel, ATA_CONTROL);
152 /* use multiple sectors/interrupt if device supports it */
153 adp->transfersize = DEV_BSIZE;
154 if (ad_version(atadev->param->version_major)) {
155 int secsperint = max(1, min(atadev->param->sectors_intr, 16));
157 if (!ata_command(atadev, ATA_C_SET_MULTI, 0, secsperint,
158 0, ATA_WAIT_INTR) && !ata_wait(atadev, 0))
159 adp->transfersize *= secsperint;
162 /* enable read caching if not default on device */
163 if (ata_command(atadev, ATA_C_SETFEATURES,
164 0, 0, ATA_C_F_ENAB_RCACHE, ATA_WAIT_INTR))
165 ata_prtdev(atadev, "enabling readahead cache failed\n");
167 /* enable write caching if allowed and not default on device */
168 if (ata_wc || (ata_tags && ad_tagsupported(adp))) {
169 if (ata_command(atadev, ATA_C_SETFEATURES,
170 0, 0, ATA_C_F_ENAB_WCACHE, ATA_WAIT_INTR))
171 ata_prtdev(atadev, "enabling write cache failed\n");
174 if (ata_command(atadev, ATA_C_SETFEATURES,
175 0, 0, ATA_C_F_DIS_WCACHE, ATA_WAIT_INTR))
176 ata_prtdev(atadev, "disabling write cache failed\n");
179 /* use DMA if allowed and if drive/controller supports it */
181 ata_dmainit(atadev, ata_pmode(atadev->param),
182 ata_wmode(atadev->param), ata_umode(atadev->param));
184 ata_dmainit(atadev, ata_pmode(atadev->param), -1, -1);
186 /* use tagged queueing if allowed and supported */
187 if (ata_tags && ad_tagsupported(adp)) {
188 adp->num_tags = atadev->param->queuelen;
189 adp->flags |= AD_F_TAG_ENABLED;
190 adp->device->channel->flags |= ATA_QUEUED;
191 if (ata_command(atadev, ATA_C_SETFEATURES,
192 0, 0, ATA_C_F_DIS_RELIRQ, ATA_WAIT_INTR))
193 ata_prtdev(atadev, "disabling release interrupt failed\n");
194 if (ata_command(atadev, ATA_C_SETFEATURES,
195 0, 0, ATA_C_F_DIS_SRVIRQ, ATA_WAIT_INTR))
196 ata_prtdev(atadev, "disabling service interrupt failed\n");
199 ATA_UNLOCK_CH(atadev->channel);
201 devstat_add_entry(&adp->stats, "ad", adp->lun, DEV_BSIZE,
202 DEVSTAT_NO_ORDERED_TAGS,
203 DEVSTAT_TYPE_DIRECT | DEVSTAT_TYPE_IF_IDE,
204 DEVSTAT_PRIORITY_DISK);
206 dev = disk_create(adp->lun, &adp->disk, 0, &ad_cdevsw);
208 dev->si_iosize_max = 256 * DEV_BSIZE;
211 /* construct the disklabel */
212 bzero(&adp->disk.d_label, sizeof(struct disklabel));
213 adp->disk.d_label.d_secsize = DEV_BSIZE;
214 adp->disk.d_label.d_nsectors = adp->sectors;
215 adp->disk.d_label.d_ntracks = adp->heads;
216 adp->disk.d_label.d_ncylinders = adp->total_secs/(adp->heads*adp->sectors);
217 adp->disk.d_label.d_secpercyl = adp->sectors * adp->heads;
218 adp->disk.d_label.d_secperunit = adp->total_secs;
220 atadev->driver = adp;
223 /* if this disk belongs to an ATA RAID dont print the probe */
224 if (ata_raiddisk_attach(adp))
225 adp->flags |= AD_F_RAID_SUBDISK;
227 if (atadev->driver) {
229 ata_enclosure_print(atadev);
235 ad_detach(struct ata_device *atadev, int flush) /* get rid of flush XXX SOS */
237 struct ad_softc *adp = atadev->driver;
238 struct ad_request *request;
241 atadev->flags |= ATA_D_DETACHING;
242 ata_prtdev(atadev, "removed from configuration\n");
243 ad_invalidatequeue(adp, NULL);
244 TAILQ_FOREACH(request, &atadev->channel->ata_queue, chain) {
245 if (request->softc != adp)
247 TAILQ_REMOVE(&atadev->channel->ata_queue, request, chain);
248 request->bp->b_error = ENXIO;
249 request->bp->b_flags |= B_ERROR;
250 biodone(request->bp);
254 while ((bp = bufq_first(&adp->queue))) {
255 bufq_remove(&adp->queue, bp);
257 bp->b_flags |= B_ERROR;
260 disk_invalidate(&adp->disk);
261 devstat_remove_entry(&adp->stats);
262 disk_destroy(&adp->disk);
264 if (ata_command(atadev, ATA_C_FLUSHCACHE, 0, 0, 0, ATA_WAIT_READY))
265 ata_prtdev(atadev, "flushing cache on detach failed\n");
267 if (adp->flags & AD_F_RAID_SUBDISK)
268 ata_raiddisk_detach(adp);
269 ata_free_name(atadev);
270 ata_free_lun(&adp_lun_map, adp->lun);
271 atadev->driver = NULL;
277 adopen(dev_t dev, int flags, int fmt, struct thread *td)
279 struct ad_softc *adp = dev->si_drv1;
281 if (adp->flags & AD_F_RAID_SUBDISK)
287 adclose(dev_t dev, int flags, int fmt, struct thread *td)
289 struct ad_softc *adp = dev->si_drv1;
292 s = splbio(); /* interlock non-atomic channel lock */
293 ATA_SLEEPLOCK_CH(adp->device->channel, ATA_CONTROL);
294 if (ata_command(adp->device, ATA_C_FLUSHCACHE, 0, 0, 0, ATA_WAIT_READY))
295 ata_prtdev(adp->device, "flushing cache on close failed\n");
296 ATA_UNLOCK_CH(adp->device->channel);
302 * note: always use the passed device rather then bp->b_dev, as the bp
303 * may have been translated through several layers.
306 adstrategy(struct buf *bp)
308 struct ad_softc *adp = bp->b_dev->si_drv1;
311 if (adp->device->flags & ATA_D_DETACHING) {
313 bp->b_flags |= B_ERROR;
318 bufqdisksort(&adp->queue, bp);
320 ata_start(adp->device->channel);
324 addump(dev_t dev, u_int count, u_int blkno, u_int secsize)
326 struct ad_softc *adp = dev->si_drv1;
327 struct ad_request request;
330 int dumppages = MAXDUMPPGS;
336 /* force PIO mode for dumps */
337 adp->device->mode = ATA_PIO;
338 ata_reinit(adp->device->channel);
340 blkcnt = howmany(PAGE_SIZE, secsize);
346 if ((count / blkcnt) < dumppages)
347 dumppages = count / blkcnt;
349 for (i = 0; i < dumppages; ++i) {
350 vm_paddr_t a = addr + (i * PAGE_SIZE);
351 if (is_physical_memory(a))
352 va = pmap_kenter_temporary(trunc_page(a), i);
354 va = pmap_kenter_temporary(trunc_page(0), i);
357 bzero(&request, sizeof(struct ad_request));
359 request.blockaddr = blkno;
360 request.bytecount = PAGE_SIZE * dumppages;
363 while (request.bytecount > 0) {
364 ad_transfer(&request);
365 if (request.flags & ADR_F_ERROR)
367 request.donecount += request.currentsize;
368 request.bytecount -= request.currentsize;
372 if (dumpstatus(addr, (off_t)count * DEV_BSIZE) < 0)
375 blkno += blkcnt * dumppages;
376 count -= blkcnt * dumppages;
377 addr += PAGE_SIZE * dumppages;
380 if (ata_wait(adp->device, ATA_S_READY | ATA_S_DSC) < 0)
381 ata_prtdev(adp->device, "timeout waiting for final ready\n");
386 ad_start(struct ata_device *atadev)
388 struct ad_softc *adp = atadev->driver;
389 struct buf *bp = bufq_first(&adp->queue);
390 struct ad_request *request;
396 /* if tagged queueing enabled get next free tag */
397 if (adp->flags & AD_F_TAG_ENABLED) {
398 while (tag <= adp->num_tags && adp->tags[tag])
400 if (tag > adp->num_tags )
405 * Allocate a request. The allocation can only fail if the pipeline
406 * is full, in which case the request will be picked up later when
407 * ad_start() is called after another request completes.
409 request = mpipe_alloc_nowait(&atadev->channel->req_mpipe);
410 if (request == NULL) {
411 ata_prtdev(atadev, "pipeline full allocating request in ad_start\n");
416 request->softc = adp;
418 request->blockaddr = bp->b_pblkno;
419 request->bytecount = bp->b_bcount;
420 request->data = bp->b_data;
422 if (bp->b_flags & B_READ)
423 request->flags |= ADR_F_READ;
424 if (adp->device->mode >= ATA_DMA) {
425 if (ata_dmaalloc(atadev, M_NOWAIT) != 0) {
426 mpipe_free(&atadev->channel->req_mpipe, request);
427 ata_prtdev(atadev, "pipeline full allocated dmabuf in ad_start\n");
428 /* do not revert to PIO, wait for ad_start after I/O completion */
433 /* insert in tag array */
434 adp->tags[tag] = request;
436 /* remove from drive queue */
437 bufq_remove(&adp->queue, bp);
439 /* link onto controller queue */
440 TAILQ_INSERT_TAIL(&atadev->channel->ata_queue, request, chain);
444 ad_requeue(struct ata_channel *chan, struct ad_request *req)
446 if (req->donecount) {
448 "WARNING: resetting donecount %u for retry\n",
450 req->bytecount += req->donecount;
453 TAILQ_INSERT_HEAD(&chan->ata_queue, req, chain);
457 ad_transfer(struct ad_request *request)
459 struct ad_softc *adp;
461 u_int32_t count, max_count;
463 int flags = ATA_IMMEDIATE;
465 /* get request params */
466 adp = request->softc;
468 /* calculate transfer details */
469 lba = request->blockaddr + (request->donecount / DEV_BSIZE);
471 if (request->donecount == 0) {
473 /* start timeout for this transfer */
475 request->timeout_handle.callout = NULL;
477 request->timeout_handle =
478 timeout((timeout_t*)ad_timeout, request, 10 * hz);
480 /* setup transfer parameters */
481 count = howmany(request->bytecount, DEV_BSIZE);
482 max_count = adp->device->param->support.address48 ? 65536 : 256;
483 if (count > max_count) {
484 ata_prtdev(adp->device,
485 "count %d size transfers not supported\n", count);
489 if (adp->flags & AD_F_CHS_USED) {
490 int sector = (lba % adp->sectors) + 1;
491 int cylinder = lba / (adp->sectors * adp->heads);
492 int head = (lba % (adp->sectors * adp->heads)) / adp->sectors;
494 lba = (sector&0xff) | ((cylinder&0xffff)<<8) | ((head&0xf)<<24);
495 adp->device->flags |= ATA_D_USE_CHS;
498 /* setup first transfer length */
499 request->currentsize = min(request->bytecount, adp->transfersize);
501 devstat_start_transaction(&adp->stats);
503 /* does this drive & transfer work with DMA ? */
504 request->flags &= ~ADR_F_DMA_USED;
505 if (adp->device->mode >= ATA_DMA &&
506 !ata_dmasetup(adp->device, request->data, request->bytecount)) {
507 request->flags |= ADR_F_DMA_USED;
508 request->currentsize = request->bytecount;
510 /* do we have tags enabled ? */
511 if (adp->flags & AD_F_TAG_ENABLED) {
512 cmd = (request->flags & ADR_F_READ) ?
513 ATA_C_READ_DMA_QUEUED : ATA_C_WRITE_DMA_QUEUED;
515 if (ata_command(adp->device, cmd, lba,
516 request->tag << 3, count, flags)) {
517 ata_prtdev(adp->device, "error executing command");
518 goto transfer_failed;
520 if (ata_wait(adp->device, ATA_S_READY)) {
521 ata_prtdev(adp->device, "timeout waiting for READY\n");
522 goto transfer_failed;
526 /* if ATA bus RELEASE check for SERVICE */
527 if (adp->flags & AD_F_TAG_ENABLED &&
528 ATA_INB(adp->device->channel->r_io, ATA_IREASON) &
530 return ad_service(adp, 1);
533 cmd = (request->flags & ADR_F_READ) ?
534 ATA_C_READ_DMA : ATA_C_WRITE_DMA;
536 if (ata_command(adp->device, cmd, lba, count, 0, flags)) {
537 ata_prtdev(adp->device, "error executing command");
538 goto transfer_failed;
542 * wait for data transfer phase
544 * well this should be here acording to specs, but older
545 * promise controllers doesn't like it, they lockup!
547 if (ata_wait(adp->device, ATA_S_READY | ATA_S_DRQ)) {
548 ata_prtdev(adp->device, "timeout waiting for data phase\n");
549 goto transfer_failed;
554 /* start transfer, return and wait for interrupt */
555 ata_dmastart(adp->device, request->data, request->bytecount,
556 request->flags & ADR_F_READ);
557 return ATA_OP_CONTINUES;
560 /* does this drive support multi sector transfers ? */
561 if (request->currentsize > DEV_BSIZE)
562 cmd = request->flags&ADR_F_READ ? ATA_C_READ_MUL : ATA_C_WRITE_MUL;
564 /* just plain old single sector transfer */
566 cmd = request->flags&ADR_F_READ ? ATA_C_READ : ATA_C_WRITE;
568 if (ata_command(adp->device, cmd, lba, count, 0, flags)){
569 ata_prtdev(adp->device, "error executing command");
570 goto transfer_failed;
574 /* calculate this transfer length */
575 request->currentsize = min(request->bytecount, adp->transfersize);
577 /* if this is a PIO read operation, return and wait for interrupt */
578 if (request->flags & ADR_F_READ)
579 return ATA_OP_CONTINUES;
581 /* ready to write PIO data ? */
582 if (ata_wait(adp->device, (ATA_S_READY | ATA_S_DSC | ATA_S_DRQ)) < 0) {
583 ata_prtdev(adp->device, "timeout waiting for DRQ");
584 goto transfer_failed;
587 /* output the data */
588 if (adp->device->channel->flags & ATA_USE_16BIT)
589 ATA_OUTSW(adp->device->channel->r_io, ATA_DATA,
590 (void *)((uintptr_t)request->data + request->donecount),
591 request->currentsize / sizeof(int16_t));
593 ATA_OUTSL(adp->device->channel->r_io, ATA_DATA,
594 (void *)((uintptr_t)request->data + request->donecount),
595 request->currentsize / sizeof(int32_t));
596 return ATA_OP_CONTINUES;
599 untimeout((timeout_t *)ad_timeout, request, request->timeout_handle);
600 ad_invalidatequeue(adp, request);
601 printf(" - resetting\n");
603 /* if retries still permit, reinject this request */
604 if (request->retries++ < AD_MAX_RETRIES)
605 ad_requeue(adp->device->channel, request);
607 /* retries all used up, return error */
608 request->bp->b_error = EIO;
609 request->bp->b_flags |= B_ERROR;
610 request->bp->b_resid = request->bytecount;
611 devstat_end_transaction_buf(&adp->stats, request->bp);
612 biodone(request->bp);
615 ata_reinit(adp->device->channel);
616 return ATA_OP_CONTINUES;
620 ad_interrupt(struct ad_request *request)
622 struct ad_softc *adp = request->softc;
625 /* finish DMA transfer */
626 if (request->flags & ADR_F_DMA_USED)
627 dma_stat = ata_dmadone(adp->device);
629 /* do we have a corrected soft error ? */
630 if (adp->device->channel->status & ATA_S_CORR)
631 diskerr(request->bp, request->bp->b_dev,
632 "soft error (ECC corrected)", LOG_PRINTF,
633 request->blockaddr + (request->donecount / DEV_BSIZE),
636 /* did any real errors happen ? */
637 if ((adp->device->channel->status & ATA_S_ERROR) ||
638 (request->flags & ADR_F_DMA_USED && dma_stat & ATA_BMSTAT_ERROR)) {
639 adp->device->channel->error =
640 ATA_INB(adp->device->channel->r_io, ATA_ERROR);
641 diskerr(request->bp, request->bp->b_dev,
642 (adp->device->channel->error & ATA_E_ICRC) ?
643 "UDMA ICRC error" : "hard error", LOG_PRINTF,
644 request->blockaddr + (request->donecount / DEV_BSIZE),
647 /* if this is a UDMA CRC error, reinject request */
648 if (request->flags & ADR_F_DMA_USED &&
649 adp->device->channel->error & ATA_E_ICRC) {
650 untimeout((timeout_t *)ad_timeout, request,request->timeout_handle);
651 ad_invalidatequeue(adp, request);
653 if (request->retries++ < AD_MAX_RETRIES)
654 printf(" retrying\n");
656 ata_dmainit(adp->device, ata_pmode(adp->device->param), -1, -1);
657 printf(" falling back to PIO mode\n");
659 ad_requeue(adp->device->channel, request);
660 return ATA_OP_FINISHED;
663 /* if using DMA, try once again in PIO mode */
664 if (request->flags & ADR_F_DMA_USED) {
665 untimeout((timeout_t *)ad_timeout, request,request->timeout_handle);
666 ad_invalidatequeue(adp, request);
667 ata_dmainit(adp->device, ata_pmode(adp->device->param), -1, -1);
668 request->flags |= ADR_F_FORCE_PIO;
669 printf(" trying PIO mode\n");
670 ad_requeue(adp->device->channel, request);
671 return ATA_OP_FINISHED;
674 request->flags |= ADR_F_ERROR;
675 printf(" status=%02x error=%02x\n",
676 adp->device->channel->status, adp->device->channel->error);
679 /* if we arrived here with forced PIO mode, DMA doesn't work right */
680 if (request->flags & ADR_F_FORCE_PIO && !(request->flags & ADR_F_ERROR))
681 ata_prtdev(adp->device, "DMA problem fallback to PIO mode\n");
683 /* if this was a PIO read operation, get the data */
684 if (!(request->flags & ADR_F_DMA_USED) &&
685 (request->flags & (ADR_F_READ | ADR_F_ERROR)) == ADR_F_READ) {
687 /* ready to receive data? */
688 if ((adp->device->channel->status & ATA_S_READY) == 0)
689 ata_prtdev(adp->device, "read interrupt arrived early");
691 if (ata_wait(adp->device, (ATA_S_READY | ATA_S_DSC | ATA_S_DRQ)) != 0) {
692 ata_prtdev(adp->device, "read error detected (too) late");
693 request->flags |= ADR_F_ERROR;
696 /* data ready, read in */
697 if (adp->device->channel->flags & ATA_USE_16BIT)
698 ATA_INSW(adp->device->channel->r_io, ATA_DATA,
699 (void*)((uintptr_t)request->data + request->donecount),
700 request->currentsize / sizeof(int16_t));
702 ATA_INSL(adp->device->channel->r_io, ATA_DATA,
703 (void*)((uintptr_t)request->data + request->donecount),
704 request->currentsize / sizeof(int32_t));
708 /* finish up transfer */
709 if (request->flags & ADR_F_ERROR) {
710 request->bp->b_error = EIO;
711 request->bp->b_flags |= B_ERROR;
714 request->bytecount -= request->currentsize;
715 request->donecount += request->currentsize;
716 if (request->bytecount > 0) {
717 ad_transfer(request);
718 return ATA_OP_CONTINUES;
722 /* disarm timeout for this transfer */
723 untimeout((timeout_t *)ad_timeout, request, request->timeout_handle);
725 request->bp->b_resid = request->bytecount;
727 devstat_end_transaction_buf(&adp->stats, request->bp);
728 biodone(request->bp);
732 /* check for SERVICE (tagged operations only) */
733 return ad_service(adp, 1);
737 ad_service(struct ad_softc *adp, int change)
739 /* do we have to check the other device on this channel ? */
740 if (adp->device->channel->flags & ATA_QUEUED && change) {
741 int device = adp->device->unit;
743 if (adp->device->unit == ATA_MASTER) {
744 if ((adp->device->channel->devices & ATA_ATA_SLAVE) &&
745 (adp->device->channel->device[SLAVE].driver) &&
746 ((struct ad_softc *) (adp->device->channel->
747 device[SLAVE].driver))->flags & AD_F_TAG_ENABLED)
751 if ((adp->device->channel->devices & ATA_ATA_MASTER) &&
752 (adp->device->channel->device[MASTER].driver) &&
753 ((struct ad_softc *) (adp->device->channel->
754 device[MASTER].driver))->flags & AD_F_TAG_ENABLED)
757 if (device != adp->device->unit &&
759 (adp->device->channel->
760 device[ATA_DEV(device)].driver))->outstanding > 0) {
761 ATA_OUTB(adp->device->channel->r_io, ATA_DRIVE, ATA_D_IBM | device);
762 adp = adp->device->channel->device[ATA_DEV(device)].driver;
766 adp->device->channel->status =
767 ATA_INB(adp->device->channel->r_altio, ATA_ALTSTAT);
769 /* do we have a SERVICE request from the drive ? */
770 if (adp->flags & AD_F_TAG_ENABLED &&
771 adp->outstanding > 0 &&
772 adp->device->channel->status & ATA_S_SERVICE) {
773 struct ad_request *request;
776 /* check for error */
777 if (adp->device->channel->status & ATA_S_ERROR) {
778 ata_prtdev(adp->device, "Oops! controller says s=0x%02x e=0x%02x\n",
779 adp->device->channel->status,
780 adp->device->channel->error);
781 ad_invalidatequeue(adp, NULL);
782 return ATA_OP_FINISHED;
785 /* issue SERVICE cmd */
786 if (ata_command(adp->device, ATA_C_SERVICE, 0, 0, 0, ATA_IMMEDIATE)) {
787 ata_prtdev(adp->device, "problem executing SERVICE cmd\n");
788 ad_invalidatequeue(adp, NULL);
789 return ATA_OP_FINISHED;
792 /* setup the transfer environment when ready */
793 if (ata_wait(adp->device, ATA_S_READY)) {
794 ata_prtdev(adp->device, "SERVICE timeout tag=%d s=%02x e=%02x\n",
795 ATA_INB(adp->device->channel->r_io, ATA_COUNT) >> 3,
796 adp->device->channel->status,
797 adp->device->channel->error);
798 ad_invalidatequeue(adp, NULL);
799 return ATA_OP_FINISHED;
801 tag = ATA_INB(adp->device->channel->r_io, ATA_COUNT) >> 3;
802 if (!(request = adp->tags[tag])) {
803 ata_prtdev(adp->device, "no request for tag=%d\n", tag);
804 ad_invalidatequeue(adp, NULL);
805 return ATA_OP_FINISHED;
807 ATA_FORCELOCK_CH(adp->device->channel, ATA_ACTIVE_ATA);
808 adp->device->channel->running = request;
811 /* start DMA transfer when ready */
812 if (ata_wait(adp->device, ATA_S_READY | ATA_S_DRQ)) {
813 ata_prtdev(adp->device, "timeout starting DMA s=%02x e=%02x\n",
814 adp->device->channel->status,
815 adp->device->channel->error);
816 ad_invalidatequeue(adp, NULL);
817 return ATA_OP_FINISHED;
819 ata_dmastart(adp->device, request->data, request->bytecount,
820 request->flags & ADR_F_READ);
821 return ATA_OP_CONTINUES;
823 return ATA_OP_FINISHED;
827 ad_free(struct ad_request *request)
830 ata_dmafree(request->softc->device);
831 request->softc->tags[request->tag] = NULL;
832 mpipe_free(&request->softc->device->channel->req_mpipe, request);
837 ad_invalidatequeue(struct ad_softc *adp, struct ad_request *request)
839 /* if tags used invalidate all other tagged transfers */
840 if (adp->flags & AD_F_TAG_ENABLED) {
841 struct ad_request *tmpreq;
844 ata_prtdev(adp->device, "invalidating queued requests\n");
845 for (tag = 0; tag <= adp->num_tags; tag++) {
846 tmpreq = adp->tags[tag];
847 adp->tags[tag] = NULL;
848 if (tmpreq == request || tmpreq == NULL)
850 untimeout((timeout_t *)ad_timeout, tmpreq, tmpreq->timeout_handle);
851 ad_requeue(adp->device->channel, tmpreq);
853 if (ata_command(adp->device, ATA_C_NOP,
854 0, 0, ATA_C_F_FLUSHQUEUE, ATA_WAIT_READY))
855 ata_prtdev(adp->device, "flush queue failed\n");
856 adp->outstanding = 0;
861 ad_tagsupported(struct ad_softc *adp)
863 const char *good[] = {"IBM-DPTA", "IBM-DTLA", NULL};
866 switch (adp->device->channel->chiptype) {
867 case 0x4d33105a: /* Promises before TX2 doesn't work with tagged queuing */
874 /* check that drive does DMA, has tags enabled, and is one we know works */
875 if (adp->device->mode >= ATA_DMA && adp->device->param->support.queued &&
876 adp->device->param->enabled.queued) {
877 while (good[i] != NULL) {
878 if (!strncmp(adp->device->param->model, good[i], strlen(good[i])))
883 * check IBM's new obscure way of naming drives
884 * we want "IC" (IBM CORP) and "AT" or "AV" (ATA interface)
885 * but doesn't care about the other info (size, capacity etc)
887 if (!strncmp(adp->device->param->model, "IC", 2) &&
888 (!strncmp(adp->device->param->model + 8, "AT", 2) ||
889 !strncmp(adp->device->param->model + 8, "AV", 2)))
896 ad_timeout(struct ad_request *request)
898 struct ad_softc *adp = request->softc;
900 adp->device->channel->running = NULL;
901 ata_prtdev(adp->device, "%s command timeout tag=%d serv=%d - resetting\n",
902 (request->flags & ADR_F_READ) ? "READ" : "WRITE",
903 request->tag, request->serv);
905 if (request->flags & ADR_F_DMA_USED) {
906 ata_dmadone(adp->device);
907 ad_invalidatequeue(adp, request);
908 if (request->retries == AD_MAX_RETRIES) {
909 ata_dmainit(adp->device, ata_pmode(adp->device->param), -1, -1);
910 ata_prtdev(adp->device, "trying fallback to PIO mode\n");
911 request->retries = 0;
915 /* if retries still permit, reinject this request */
916 if (request->retries++ < AD_MAX_RETRIES) {
917 ad_requeue(adp->device->channel, request);
920 /* retries all used up, return error */
921 request->bp->b_error = EIO;
922 request->bp->b_flags |= B_ERROR;
923 devstat_end_transaction_buf(&adp->stats, request->bp);
924 biodone(request->bp);
927 ata_reinit(adp->device->channel);
931 ad_reinit(struct ata_device *atadev)
933 struct ad_softc *adp = atadev->driver;
935 /* reinit disk parameters */
936 ad_invalidatequeue(atadev->driver, NULL);
937 ata_command(atadev, ATA_C_SET_MULTI, 0,
938 adp->transfersize / DEV_BSIZE, 0, ATA_WAIT_READY);
939 if (adp->device->mode >= ATA_DMA)
940 ata_dmainit(atadev, ata_pmode(adp->device->param),
941 ata_wmode(adp->device->param),
942 ata_umode(adp->device->param));
944 ata_dmainit(atadev, ata_pmode(adp->device->param), -1, -1);
948 ad_print(struct ad_softc *adp)
951 ata_prtdev(adp->device, "<%.40s/%.8s> ATA-%d disk at ata%d-%s\n",
952 adp->device->param->model, adp->device->param->revision,
953 ad_version(adp->device->param->version_major),
954 device_get_unit(adp->device->channel->dev),
955 (adp->device->unit == ATA_MASTER) ? "master" : "slave");
957 ata_prtdev(adp->device,
958 "%lluMB (%llu sectors), %llu C, %u H, %u S, %u B\n",
959 (unsigned long long)(adp->total_secs /
960 ((1024L*1024L)/DEV_BSIZE)),
961 (unsigned long long) adp->total_secs,
962 (unsigned long long) (adp->total_secs /
963 (adp->heads * adp->sectors)),
964 adp->heads, adp->sectors, DEV_BSIZE);
966 ata_prtdev(adp->device, "%d secs/int, %d depth queue, %s%s\n",
967 adp->transfersize / DEV_BSIZE, adp->num_tags + 1,
968 (adp->flags & AD_F_TAG_ENABLED) ? "tagged " : "",
969 ata_mode2str(adp->device->mode));
971 ata_prtdev(adp->device, "piomode=%d dmamode=%d udmamode=%d cblid=%d\n",
972 ata_pmode(adp->device->param), ata_wmode(adp->device->param),
973 ata_umode(adp->device->param),
974 adp->device->param->hwres_cblid);
978 ata_prtdev(adp->device,"%lluMB <%.40s> [%lld/%d/%d] at ata%d-%s %s%s\n",
979 (unsigned long long)(adp->total_secs /
980 ((1024L * 1024L) / DEV_BSIZE)),
981 adp->device->param->model,
982 (unsigned long long)(adp->total_secs /
983 (adp->heads*adp->sectors)),
984 adp->heads, adp->sectors,
985 device_get_unit(adp->device->channel->dev),
986 (adp->device->unit == ATA_MASTER) ? "master" : "slave",
987 (adp->flags & AD_F_TAG_ENABLED) ? "tagged " : "",
988 ata_mode2str(adp->device->mode));
992 ad_version(u_int16_t version)
996 if (version == 0xffff)
998 for (bit = 15; bit >= 0; bit--)
999 if (version & (1<<bit))