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 1.26 2006/02/17 19:17:54 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>
57 #include <sys/thread2.h>
59 /* device structures */
60 static d_open_t adopen;
61 static d_close_t adclose;
62 static d_strategy_t adstrategy;
63 static d_dump_t addump;
65 static struct cdevsw ad_cdevsw = {
75 /* write */ physwrite,
79 /* strategy */ adstrategy,
85 static void ad_requeue(struct ata_channel *, struct ad_request *);
86 static void ad_invalidatequeue(struct ad_softc *, struct ad_request *);
87 static int ad_tagsupported(struct ad_softc *);
88 static void ad_timeout(struct ad_request *);
89 static void ad_free(struct ad_request *);
90 static int ad_version(u_int16_t);
93 #define AD_MAX_RETRIES 3
96 static u_int32_t adp_lun_map = 0;
97 static int ata_dma = 1;
98 static int ata_wc = 1;
99 static int ata_tags = 0;
100 TUNABLE_INT("hw.ata.ata_dma", &ata_dma);
101 TUNABLE_INT("hw.ata.wc", &ata_wc);
102 TUNABLE_INT("hw.ata.tags", &ata_tags);
103 static MALLOC_DEFINE(M_AD, "AD driver", "ATA disk driver");
106 SYSCTL_DECL(_hw_ata);
107 SYSCTL_INT(_hw_ata, OID_AUTO, ata_dma, CTLFLAG_RD, &ata_dma, 0,
108 "ATA disk DMA mode control");
109 SYSCTL_INT(_hw_ata, OID_AUTO, wc, CTLFLAG_RD, &ata_wc, 0,
110 "ATA disk write caching");
111 SYSCTL_INT(_hw_ata, OID_AUTO, tags, CTLFLAG_RD, &ata_tags, 0,
112 "ATA disk tagged queuing support");
115 ad_attach(struct ata_device *atadev, int alreadylocked)
117 struct ad_softc *adp;
120 adp = malloc(sizeof(struct ad_softc), M_AD, M_WAITOK | M_ZERO);
122 KKASSERT(atadev->channel->req_mpipe.max_count != 0);
124 adp->device = atadev;
126 adp->lun = (device_get_unit(atadev->channel->dev)<<1)+ATA_DEV(atadev->unit);
128 adp->lun = ata_get_lun(&adp_lun_map);
130 ata_set_name(atadev, "ad", adp->lun);
131 adp->heads = atadev->param->heads;
132 adp->sectors = atadev->param->sectors;
133 adp->total_secs = atadev->param->cylinders * adp->heads * adp->sectors;
134 bioq_init(&adp->bio_queue);
136 /* does this device need oldstyle CHS addressing */
137 if (!ad_version(atadev->param->version_major) ||
138 !(atadev->param->atavalid & ATA_FLAG_54_58) || !atadev->param->lba_size)
139 adp->flags |= AD_F_CHS_USED;
141 /* use the 28bit LBA size if valid */
142 if (atadev->param->cylinders == 16383 &&
143 adp->total_secs < atadev->param->lba_size)
144 adp->total_secs = atadev->param->lba_size;
146 /* use the 48bit LBA size if valid */
147 if (atadev->param->support.address48 &&
148 atadev->param->lba_size48 > 268435455)
149 adp->total_secs = atadev->param->lba_size48;
152 ATA_SLEEPLOCK_CH(atadev->channel, ATA_CONTROL);
153 /* use multiple sectors/interrupt if device supports it */
154 adp->transfersize = DEV_BSIZE;
155 if (ad_version(atadev->param->version_major)) {
156 int secsperint = max(1, min(atadev->param->sectors_intr, 16));
158 if (!ata_command(atadev, ATA_C_SET_MULTI, 0, secsperint,
159 0, ATA_WAIT_INTR) && !ata_wait(atadev, 0))
160 adp->transfersize *= secsperint;
163 /* enable read caching if not default on device */
164 if (ata_command(atadev, ATA_C_SETFEATURES,
165 0, 0, ATA_C_F_ENAB_RCACHE, ATA_WAIT_INTR))
166 ata_prtdev(atadev, "enabling readahead cache failed\n");
168 /* enable write caching if allowed and not default on device */
169 if (ata_wc || (ata_tags && ad_tagsupported(adp))) {
170 if (ata_command(atadev, ATA_C_SETFEATURES,
171 0, 0, ATA_C_F_ENAB_WCACHE, ATA_WAIT_INTR))
172 ata_prtdev(atadev, "enabling write cache failed\n");
175 if (ata_command(atadev, ATA_C_SETFEATURES,
176 0, 0, ATA_C_F_DIS_WCACHE, ATA_WAIT_INTR))
177 ata_prtdev(atadev, "disabling write cache failed\n");
180 /* use DMA if allowed and if drive/controller supports it */
182 ata_dmainit(atadev, ata_pmode(atadev->param),
183 ata_wmode(atadev->param), ata_umode(atadev->param));
185 ata_dmainit(atadev, ata_pmode(atadev->param), -1, -1);
187 /* use tagged queueing if allowed and supported */
188 if (ata_tags && ad_tagsupported(adp)) {
189 adp->num_tags = atadev->param->queuelen;
190 adp->flags |= AD_F_TAG_ENABLED;
191 adp->device->channel->flags |= ATA_QUEUED;
192 if (ata_command(atadev, ATA_C_SETFEATURES,
193 0, 0, ATA_C_F_DIS_RELIRQ, ATA_WAIT_INTR))
194 ata_prtdev(atadev, "disabling release interrupt failed\n");
195 if (ata_command(atadev, ATA_C_SETFEATURES,
196 0, 0, ATA_C_F_DIS_SRVIRQ, ATA_WAIT_INTR))
197 ata_prtdev(atadev, "disabling service interrupt failed\n");
200 ATA_UNLOCK_CH(atadev->channel);
202 devstat_add_entry(&adp->stats, "ad", adp->lun, DEV_BSIZE,
203 DEVSTAT_NO_ORDERED_TAGS,
204 DEVSTAT_TYPE_DIRECT | DEVSTAT_TYPE_IF_IDE,
205 DEVSTAT_PRIORITY_DISK);
207 dev = disk_create(adp->lun, &adp->disk, 0, &ad_cdevsw);
209 dev->si_iosize_max = 256 * DEV_BSIZE;
212 /* construct the disklabel */
213 bzero(&adp->disk.d_label, sizeof(struct disklabel));
214 adp->disk.d_label.d_secsize = DEV_BSIZE;
215 adp->disk.d_label.d_nsectors = adp->sectors;
216 adp->disk.d_label.d_ntracks = adp->heads;
217 adp->disk.d_label.d_ncylinders = adp->total_secs/(adp->heads*adp->sectors);
218 adp->disk.d_label.d_secpercyl = adp->sectors * adp->heads;
219 adp->disk.d_label.d_secperunit = adp->total_secs;
221 atadev->driver = adp;
224 /* if this disk belongs to an ATA RAID dont print the probe */
225 if (ata_raiddisk_attach(adp))
226 adp->flags |= AD_F_RAID_SUBDISK;
228 if (atadev->driver) {
230 ata_enclosure_print(atadev);
236 ad_detach(struct ata_device *atadev, int flush) /* get rid of flush XXX SOS */
238 struct ad_softc *adp = atadev->driver;
239 struct ad_request *request;
243 atadev->flags |= ATA_D_DETACHING;
244 ata_prtdev(atadev, "removed from configuration\n");
245 ad_invalidatequeue(adp, NULL);
246 TAILQ_FOREACH(request, &atadev->channel->ata_queue, chain) {
247 if (request->softc != adp)
249 TAILQ_REMOVE(&atadev->channel->ata_queue, request, chain);
250 request->bio->bio_buf->b_error = ENXIO;
251 request->bio->bio_buf->b_flags |= B_ERROR;
252 biodone(request->bio);
256 while ((bio = bioq_first(&adp->bio_queue))) {
257 bioq_remove(&adp->bio_queue, bio);
260 bp->b_flags |= B_ERROR;
263 disk_invalidate(&adp->disk);
264 devstat_remove_entry(&adp->stats);
265 disk_destroy(&adp->disk);
267 if (ata_command(atadev, ATA_C_FLUSHCACHE, 0, 0, 0, ATA_WAIT_READY))
268 ata_prtdev(atadev, "flushing cache on detach failed\n");
270 if (adp->flags & AD_F_RAID_SUBDISK)
271 ata_raiddisk_detach(adp);
272 ata_free_name(atadev);
273 ata_free_lun(&adp_lun_map, adp->lun);
274 atadev->driver = NULL;
280 adopen(dev_t dev, int flags, int fmt, struct thread *td)
282 struct ad_softc *adp = dev->si_drv1;
284 if (adp->flags & AD_F_RAID_SUBDISK)
290 adclose(dev_t dev, int flags, int fmt, struct thread *td)
292 struct ad_softc *adp = dev->si_drv1;
294 crit_enter(); /* interlock non-atomic channel lock */
295 ATA_SLEEPLOCK_CH(adp->device->channel, ATA_CONTROL);
296 if (ata_command(adp->device, ATA_C_FLUSHCACHE, 0, 0, 0, ATA_WAIT_READY))
297 ata_prtdev(adp->device, "flushing cache on close failed\n");
298 ATA_UNLOCK_CH(adp->device->channel);
304 * note: always use the passed device rather then bp->b_dev, as the bp
305 * may have been translated through several layers.
308 adstrategy(dev_t dev, struct bio *bio)
310 struct buf *bp = bio->bio_buf;
311 struct ad_softc *adp = dev->si_drv1;
313 if (adp->device->flags & ATA_D_DETACHING) {
315 bp->b_flags |= B_ERROR;
319 bio->bio_driver_info = dev;
321 bioqdisksort(&adp->bio_queue, bio);
323 ata_start(adp->device->channel);
327 addump(dev_t dev, u_int count, u_int blkno, u_int secsize)
329 struct ad_softc *adp = dev->si_drv1;
330 struct ad_request request;
333 int dumppages = MAXDUMPPGS;
339 /* force PIO mode for dumps */
340 adp->device->mode = ATA_PIO;
341 ata_reinit(adp->device->channel);
343 blkcnt = howmany(PAGE_SIZE, secsize);
349 if ((count / blkcnt) < dumppages)
350 dumppages = count / blkcnt;
352 for (i = 0; i < dumppages; ++i) {
353 vm_paddr_t a = addr + (i * PAGE_SIZE);
354 if (is_physical_memory(a))
355 va = pmap_kenter_temporary(trunc_page(a), i);
357 va = pmap_kenter_temporary(trunc_page(0), i);
360 bzero(&request, sizeof(struct ad_request));
362 request.blockaddr = blkno;
363 request.bytecount = PAGE_SIZE * dumppages;
365 callout_init(&request.callout);
367 while (request.bytecount > 0) {
368 ad_transfer(&request);
369 if (request.flags & ADR_F_ERROR)
371 request.donecount += request.currentsize;
372 request.bytecount -= request.currentsize;
376 if (dumpstatus(addr, (off_t)count * DEV_BSIZE) < 0)
379 blkno += blkcnt * dumppages;
380 count -= blkcnt * dumppages;
381 addr += PAGE_SIZE * dumppages;
384 if (ata_wait(adp->device, ATA_S_READY | ATA_S_DSC) < 0)
385 ata_prtdev(adp->device, "timeout waiting for final ready\n");
390 * Critical section is held when this function is called
394 ad_start(struct ata_device *atadev)
396 struct ad_softc *adp = atadev->driver;
397 struct bio *bio = bioq_first(&adp->bio_queue);
399 struct ad_request *request;
406 /* if tagged queueing enabled get next free tag */
407 if (adp->flags & AD_F_TAG_ENABLED) {
408 while (tag <= adp->num_tags && adp->tags[tag])
410 if (tag > adp->num_tags )
415 * Allocate a request. The allocation can only fail if the pipeline
416 * is full, in which case the request will be picked up later when
417 * ad_start() is called after another request completes.
419 request = mpipe_alloc_nowait(&atadev->channel->req_mpipe);
420 if (request == NULL) {
421 ata_prtdev(atadev, "pipeline full allocating request in ad_start\n");
426 request->softc = adp;
428 request->blockaddr = bio->bio_blkno;
429 request->bytecount = bp->b_bcount;
430 request->data = bp->b_data;
432 callout_init(&request->callout);
433 if (bp->b_flags & B_READ)
434 request->flags |= ADR_F_READ;
435 if (adp->device->mode >= ATA_DMA) {
436 if (ata_dmaalloc(atadev, M_NOWAIT) != 0) {
437 mpipe_free(&atadev->channel->req_mpipe, request);
438 ata_prtdev(atadev, "pipeline full allocated dmabuf in ad_start\n");
439 /* do not revert to PIO, wait for ad_start after I/O completion */
444 /* insert in tag array */
445 adp->tags[tag] = request;
447 /* remove from drive queue */
448 bioq_remove(&adp->bio_queue, bio);
450 /* link onto controller queue */
451 TAILQ_INSERT_TAIL(&atadev->channel->ata_queue, request, chain);
455 ad_requeue(struct ata_channel *chan, struct ad_request *req)
457 if (req->donecount) {
459 "WARNING: resetting donecount %u for retry\n",
461 req->bytecount += req->donecount;
464 TAILQ_INSERT_HEAD(&chan->ata_queue, req, chain);
468 ad_transfer(struct ad_request *request)
470 struct ad_softc *adp;
472 u_int32_t count, max_count;
474 int flags = ATA_IMMEDIATE;
476 /* get request params */
477 adp = request->softc;
479 /* calculate transfer details */
480 lba = request->blockaddr + (request->donecount / DEV_BSIZE);
482 if (request->donecount == 0) {
484 /* start timeout for this transfer */
486 callout_stop(&request->callout);
488 callout_reset(&request->callout, 10 * hz,
489 (void *)ad_timeout, request);
492 /* setup transfer parameters */
493 count = howmany(request->bytecount, DEV_BSIZE);
494 max_count = adp->device->param->support.address48 ? 65536 : 256;
495 if (count > max_count) {
496 ata_prtdev(adp->device,
497 "count %d size transfers not supported\n", count);
501 if (adp->flags & AD_F_CHS_USED) {
502 int sector = (lba % adp->sectors) + 1;
503 int cylinder = lba / (adp->sectors * adp->heads);
504 int head = (lba % (adp->sectors * adp->heads)) / adp->sectors;
506 lba = (sector&0xff) | ((cylinder&0xffff)<<8) | ((head&0xf)<<24);
507 adp->device->flags |= ATA_D_USE_CHS;
510 /* setup first transfer length */
511 request->currentsize = min(request->bytecount, adp->transfersize);
513 devstat_start_transaction(&adp->stats);
515 /* does this drive & transfer work with DMA ? */
516 request->flags &= ~ADR_F_DMA_USED;
517 if (adp->device->mode >= ATA_DMA &&
518 !ata_dmasetup(adp->device, request->data, request->bytecount)) {
519 request->flags |= ADR_F_DMA_USED;
520 request->currentsize = request->bytecount;
522 /* do we have tags enabled ? */
523 if (adp->flags & AD_F_TAG_ENABLED) {
524 cmd = (request->flags & ADR_F_READ) ?
525 ATA_C_READ_DMA_QUEUED : ATA_C_WRITE_DMA_QUEUED;
527 if (ata_command(adp->device, cmd, lba,
528 request->tag << 3, count, flags)) {
529 ata_prtdev(adp->device, "error executing command");
530 goto transfer_failed;
532 if (ata_wait(adp->device, ATA_S_READY)) {
533 ata_prtdev(adp->device, "timeout waiting for READY\n");
534 goto transfer_failed;
538 /* if ATA bus RELEASE check for SERVICE */
539 if (adp->flags & AD_F_TAG_ENABLED &&
540 ATA_INB(adp->device->channel->r_io, ATA_IREASON) &
542 return ad_service(adp, 1);
545 cmd = (request->flags & ADR_F_READ) ?
546 ATA_C_READ_DMA : ATA_C_WRITE_DMA;
548 if (ata_command(adp->device, cmd, lba, count, 0, flags)) {
549 ata_prtdev(adp->device, "error executing command");
550 goto transfer_failed;
554 * wait for data transfer phase
556 * well this should be here acording to specs, but older
557 * promise controllers doesn't like it, they lockup!
559 if (ata_wait(adp->device, ATA_S_READY | ATA_S_DRQ)) {
560 ata_prtdev(adp->device, "timeout waiting for data phase\n");
561 goto transfer_failed;
566 /* start transfer, return and wait for interrupt */
567 ata_dmastart(adp->device, request->data, request->bytecount,
568 request->flags & ADR_F_READ);
569 return ATA_OP_CONTINUES;
572 /* does this drive support multi sector transfers ? */
573 if (request->currentsize > DEV_BSIZE)
574 cmd = request->flags&ADR_F_READ ? ATA_C_READ_MUL : ATA_C_WRITE_MUL;
576 /* just plain old single sector transfer */
578 cmd = request->flags&ADR_F_READ ? ATA_C_READ : ATA_C_WRITE;
580 if (ata_command(adp->device, cmd, lba, count, 0, flags)){
581 ata_prtdev(adp->device, "error executing command");
582 goto transfer_failed;
586 /* calculate this transfer length */
587 request->currentsize = min(request->bytecount, adp->transfersize);
589 /* if this is a PIO read operation, return and wait for interrupt */
590 if (request->flags & ADR_F_READ)
591 return ATA_OP_CONTINUES;
593 /* ready to write PIO data ? */
594 if (ata_wait(adp->device, (ATA_S_READY | ATA_S_DSC | ATA_S_DRQ)) < 0) {
595 ata_prtdev(adp->device, "timeout waiting for DRQ");
596 goto transfer_failed;
599 /* output the data */
600 if (adp->device->channel->flags & ATA_USE_16BIT)
601 ATA_OUTSW(adp->device->channel->r_io, ATA_DATA,
602 (void *)((uintptr_t)request->data + request->donecount),
603 request->currentsize / sizeof(int16_t));
605 ATA_OUTSL(adp->device->channel->r_io, ATA_DATA,
606 (void *)((uintptr_t)request->data + request->donecount),
607 request->currentsize / sizeof(int32_t));
608 return ATA_OP_CONTINUES;
611 callout_stop(&request->callout);
612 ad_invalidatequeue(adp, request);
613 printf(" - resetting\n");
615 /* if retries still permit, reinject this request */
616 if (request->retries++ < AD_MAX_RETRIES)
617 ad_requeue(adp->device->channel, request);
619 /* retries all used up, return error */
620 request->bio->bio_buf->b_error = EIO;
621 request->bio->bio_buf->b_flags |= B_ERROR;
622 request->bio->bio_buf->b_resid = request->bytecount;
623 devstat_end_transaction_buf(&adp->stats, request->bio->bio_buf);
624 biodone(request->bio);
627 ata_reinit(adp->device->channel);
628 return ATA_OP_CONTINUES;
632 ad_interrupt(struct ad_request *request)
634 struct ad_softc *adp = request->softc;
638 /* finish DMA transfer */
639 if (request->flags & ADR_F_DMA_USED)
640 dma_stat = ata_dmadone(adp->device);
642 dev = request->bio->bio_driver_info;
643 /* do we have a corrected soft error ? */
644 if (adp->device->channel->status & ATA_S_CORR)
645 diskerr(request->bio, dev,
646 "soft error (ECC corrected)", LOG_PRINTF,
647 request->blockaddr + (request->donecount / DEV_BSIZE),
650 /* did any real errors happen ? */
651 if ((adp->device->channel->status & ATA_S_ERROR) ||
652 (request->flags & ADR_F_DMA_USED && dma_stat & ATA_BMSTAT_ERROR)) {
653 adp->device->channel->error =
654 ATA_INB(adp->device->channel->r_io, ATA_ERROR);
655 diskerr(request->bio, dev,
656 (adp->device->channel->error & ATA_E_ICRC) ?
657 "UDMA ICRC error" : "hard error", LOG_PRINTF,
658 request->blockaddr + (request->donecount / DEV_BSIZE),
661 /* if this is a UDMA CRC error, reinject request */
662 if (request->flags & ADR_F_DMA_USED &&
663 adp->device->channel->error & ATA_E_ICRC) {
664 callout_stop(&request->callout);
665 ad_invalidatequeue(adp, request);
667 if (request->retries++ < AD_MAX_RETRIES)
668 printf(" retrying\n");
670 ata_dmainit(adp->device, ata_pmode(adp->device->param), -1, -1);
671 printf(" falling back to PIO mode\n");
673 ad_requeue(adp->device->channel, request);
674 return ATA_OP_FINISHED;
677 /* if using DMA, try once again in PIO mode */
678 if (request->flags & ADR_F_DMA_USED) {
679 callout_stop(&request->callout);
680 ad_invalidatequeue(adp, request);
681 ata_dmainit(adp->device, ata_pmode(adp->device->param), -1, -1);
682 request->flags |= ADR_F_FORCE_PIO;
683 printf(" trying PIO mode\n");
684 ad_requeue(adp->device->channel, request);
685 return ATA_OP_FINISHED;
688 request->flags |= ADR_F_ERROR;
689 printf(" status=%02x error=%02x\n",
690 adp->device->channel->status, adp->device->channel->error);
693 /* if we arrived here with forced PIO mode, DMA doesn't work right */
694 if (request->flags & ADR_F_FORCE_PIO && !(request->flags & ADR_F_ERROR))
695 ata_prtdev(adp->device, "DMA problem fallback to PIO mode\n");
697 /* if this was a PIO read operation, get the data */
698 if (!(request->flags & ADR_F_DMA_USED) &&
699 (request->flags & (ADR_F_READ | ADR_F_ERROR)) == ADR_F_READ) {
701 /* ready to receive data? */
702 if ((adp->device->channel->status & ATA_S_READY) == 0)
703 ata_prtdev(adp->device, "read interrupt arrived early");
705 if (ata_wait(adp->device, (ATA_S_READY | ATA_S_DSC | ATA_S_DRQ)) != 0) {
706 ata_prtdev(adp->device, "read error detected (too) late");
707 request->flags |= ADR_F_ERROR;
710 /* data ready, read in */
711 if (adp->device->channel->flags & ATA_USE_16BIT)
712 ATA_INSW(adp->device->channel->r_io, ATA_DATA,
713 (void*)((uintptr_t)request->data + request->donecount),
714 request->currentsize / sizeof(int16_t));
716 ATA_INSL(adp->device->channel->r_io, ATA_DATA,
717 (void*)((uintptr_t)request->data + request->donecount),
718 request->currentsize / sizeof(int32_t));
722 /* finish up transfer */
723 if (request->flags & ADR_F_ERROR) {
724 request->bio->bio_buf->b_error = EIO;
725 request->bio->bio_buf->b_flags |= B_ERROR;
728 request->bytecount -= request->currentsize;
729 request->donecount += request->currentsize;
730 if (request->bytecount > 0) {
731 ad_transfer(request);
732 return ATA_OP_CONTINUES;
736 /* disarm timeout for this transfer */
737 callout_stop(&request->callout);
739 request->bio->bio_buf->b_resid = request->bytecount;
741 devstat_end_transaction_buf(&adp->stats, request->bio->bio_buf);
742 biodone(request->bio);
746 /* check for SERVICE (tagged operations only) */
747 return ad_service(adp, 1);
751 ad_service(struct ad_softc *adp, int change)
753 /* do we have to check the other device on this channel ? */
754 if (adp->device->channel->flags & ATA_QUEUED && change) {
755 int device = adp->device->unit;
757 if (adp->device->unit == ATA_MASTER) {
758 if ((adp->device->channel->devices & ATA_ATA_SLAVE) &&
759 (adp->device->channel->device[SLAVE].driver) &&
760 ((struct ad_softc *) (adp->device->channel->
761 device[SLAVE].driver))->flags & AD_F_TAG_ENABLED)
765 if ((adp->device->channel->devices & ATA_ATA_MASTER) &&
766 (adp->device->channel->device[MASTER].driver) &&
767 ((struct ad_softc *) (adp->device->channel->
768 device[MASTER].driver))->flags & AD_F_TAG_ENABLED)
771 if (device != adp->device->unit &&
773 (adp->device->channel->
774 device[ATA_DEV(device)].driver))->outstanding > 0) {
775 ATA_OUTB(adp->device->channel->r_io, ATA_DRIVE, ATA_D_IBM | device);
776 adp = adp->device->channel->device[ATA_DEV(device)].driver;
780 adp->device->channel->status =
781 ATA_INB(adp->device->channel->r_altio, ATA_ALTSTAT);
783 /* do we have a SERVICE request from the drive ? */
784 if (adp->flags & AD_F_TAG_ENABLED &&
785 adp->outstanding > 0 &&
786 adp->device->channel->status & ATA_S_SERVICE) {
787 struct ad_request *request;
790 /* check for error */
791 if (adp->device->channel->status & ATA_S_ERROR) {
792 ata_prtdev(adp->device, "Oops! controller says s=0x%02x e=0x%02x\n",
793 adp->device->channel->status,
794 adp->device->channel->error);
795 ad_invalidatequeue(adp, NULL);
796 return ATA_OP_FINISHED;
799 /* issue SERVICE cmd */
800 if (ata_command(adp->device, ATA_C_SERVICE, 0, 0, 0, ATA_IMMEDIATE)) {
801 ata_prtdev(adp->device, "problem executing SERVICE cmd\n");
802 ad_invalidatequeue(adp, NULL);
803 return ATA_OP_FINISHED;
806 /* setup the transfer environment when ready */
807 if (ata_wait(adp->device, ATA_S_READY)) {
808 ata_prtdev(adp->device, "SERVICE timeout tag=%d s=%02x e=%02x\n",
809 ATA_INB(adp->device->channel->r_io, ATA_COUNT) >> 3,
810 adp->device->channel->status,
811 adp->device->channel->error);
812 ad_invalidatequeue(adp, NULL);
813 return ATA_OP_FINISHED;
815 tag = ATA_INB(adp->device->channel->r_io, ATA_COUNT) >> 3;
816 if (!(request = adp->tags[tag])) {
817 ata_prtdev(adp->device, "no request for tag=%d\n", tag);
818 ad_invalidatequeue(adp, NULL);
819 return ATA_OP_FINISHED;
821 ATA_FORCELOCK_CH(adp->device->channel, ATA_ACTIVE_ATA);
822 adp->device->channel->running = request;
825 /* start DMA transfer when ready */
826 if (ata_wait(adp->device, ATA_S_READY | ATA_S_DRQ)) {
827 ata_prtdev(adp->device, "timeout starting DMA s=%02x e=%02x\n",
828 adp->device->channel->status,
829 adp->device->channel->error);
830 ad_invalidatequeue(adp, NULL);
831 return ATA_OP_FINISHED;
833 ata_dmastart(adp->device, request->data, request->bytecount,
834 request->flags & ADR_F_READ);
835 return ATA_OP_CONTINUES;
837 return ATA_OP_FINISHED;
841 ad_free(struct ad_request *request)
844 ata_dmafree(request->softc->device);
845 request->softc->tags[request->tag] = NULL;
846 mpipe_free(&request->softc->device->channel->req_mpipe, request);
851 ad_invalidatequeue(struct ad_softc *adp, struct ad_request *request)
853 /* if tags used invalidate all other tagged transfers */
854 if (adp->flags & AD_F_TAG_ENABLED) {
855 struct ad_request *tmpreq;
858 ata_prtdev(adp->device, "invalidating queued requests\n");
859 for (tag = 0; tag <= adp->num_tags; tag++) {
860 tmpreq = adp->tags[tag];
861 adp->tags[tag] = NULL;
862 if (tmpreq == request || tmpreq == NULL)
864 callout_stop(&request->callout);
865 ad_requeue(adp->device->channel, tmpreq);
867 if (ata_command(adp->device, ATA_C_NOP,
868 0, 0, ATA_C_F_FLUSHQUEUE, ATA_WAIT_READY))
869 ata_prtdev(adp->device, "flush queue failed\n");
870 adp->outstanding = 0;
875 ad_tagsupported(struct ad_softc *adp)
877 const char *good[] = {"IBM-DPTA", "IBM-DTLA", NULL};
880 switch (adp->device->channel->chiptype) {
881 case 0x4d33105a: /* Promises before TX2 doesn't work with tagged queuing */
888 /* check that drive does DMA, has tags enabled, and is one we know works */
889 if (adp->device->mode >= ATA_DMA && adp->device->param->support.queued &&
890 adp->device->param->enabled.queued) {
891 while (good[i] != NULL) {
892 if (!strncmp(adp->device->param->model, good[i], strlen(good[i])))
897 * check IBM's new obscure way of naming drives
898 * we want "IC" (IBM CORP) and "AT" or "AV" (ATA interface)
899 * but doesn't care about the other info (size, capacity etc)
901 if (!strncmp(adp->device->param->model, "IC", 2) &&
902 (!strncmp(adp->device->param->model + 8, "AT", 2) ||
903 !strncmp(adp->device->param->model + 8, "AV", 2)))
910 ad_timeout(struct ad_request *request)
912 struct ad_softc *adp = request->softc;
914 adp->device->channel->running = NULL;
915 ata_prtdev(adp->device, "%s command timeout tag=%d serv=%d - resetting\n",
916 (request->flags & ADR_F_READ) ? "READ" : "WRITE",
917 request->tag, request->serv);
919 if (request->flags & ADR_F_DMA_USED) {
920 ata_dmadone(adp->device);
921 ad_invalidatequeue(adp, request);
922 if (request->retries == AD_MAX_RETRIES) {
923 ata_dmainit(adp->device, ata_pmode(adp->device->param), -1, -1);
924 ata_prtdev(adp->device, "trying fallback to PIO mode\n");
925 request->retries = 0;
929 /* if retries still permit, reinject this request */
930 if (request->retries++ < AD_MAX_RETRIES) {
931 ad_requeue(adp->device->channel, request);
934 /* retries all used up, return error */
935 request->bio->bio_buf->b_error = EIO;
936 request->bio->bio_buf->b_flags |= B_ERROR;
937 devstat_end_transaction_buf(&adp->stats, request->bio->bio_buf);
938 biodone(request->bio);
941 ata_reinit(adp->device->channel);
945 ad_reinit(struct ata_device *atadev)
947 struct ad_softc *adp = atadev->driver;
949 /* reinit disk parameters */
950 ad_invalidatequeue(atadev->driver, NULL);
951 ata_command(atadev, ATA_C_SET_MULTI, 0,
952 adp->transfersize / DEV_BSIZE, 0, ATA_WAIT_READY);
953 if (adp->device->mode >= ATA_DMA)
954 ata_dmainit(atadev, ata_pmode(adp->device->param),
955 ata_wmode(adp->device->param),
956 ata_umode(adp->device->param));
958 ata_dmainit(atadev, ata_pmode(adp->device->param), -1, -1);
962 ad_print(struct ad_softc *adp)
965 ata_prtdev(adp->device, "<%.40s/%.8s> ATA-%d disk at ata%d-%s\n",
966 adp->device->param->model, adp->device->param->revision,
967 ad_version(adp->device->param->version_major),
968 device_get_unit(adp->device->channel->dev),
969 (adp->device->unit == ATA_MASTER) ? "master" : "slave");
971 ata_prtdev(adp->device,
972 "%lluMB (%llu sectors), %llu C, %u H, %u S, %u B\n",
973 (unsigned long long)(adp->total_secs /
974 ((1024L*1024L)/DEV_BSIZE)),
975 (unsigned long long) adp->total_secs,
976 (unsigned long long) (adp->total_secs /
977 (adp->heads * adp->sectors)),
978 adp->heads, adp->sectors, DEV_BSIZE);
980 ata_prtdev(adp->device, "%d secs/int, %d depth queue, %s%s\n",
981 adp->transfersize / DEV_BSIZE, adp->num_tags + 1,
982 (adp->flags & AD_F_TAG_ENABLED) ? "tagged " : "",
983 ata_mode2str(adp->device->mode));
985 ata_prtdev(adp->device, "piomode=%d dmamode=%d udmamode=%d cblid=%d\n",
986 ata_pmode(adp->device->param), ata_wmode(adp->device->param),
987 ata_umode(adp->device->param),
988 adp->device->param->hwres_cblid);
992 ata_prtdev(adp->device,"%lluMB <%.40s> [%lld/%d/%d] at ata%d-%s %s%s\n",
993 (unsigned long long)(adp->total_secs /
994 ((1024L * 1024L) / DEV_BSIZE)),
995 adp->device->param->model,
996 (unsigned long long)(adp->total_secs /
997 (adp->heads*adp->sectors)),
998 adp->heads, adp->sectors,
999 device_get_unit(adp->device->channel->dev),
1000 (adp->device->unit == ATA_MASTER) ? "master" : "slave",
1001 (adp->flags & AD_F_TAG_ENABLED) ? "tagged " : "",
1002 ata_mode2str(adp->device->mode));
1006 ad_version(u_int16_t version)
1010 if (version == 0xffff)
1012 for (bit = 15; bit >= 0; bit--)
1013 if (version & (1<<bit))