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 1.12 2004/02/18 01:35:59 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_invalidatequeue(struct ad_softc *, struct ad_request *);
85 static int ad_tagsupported(struct ad_softc *);
86 static void ad_timeout(struct ad_request *);
87 static void ad_free(struct ad_request *);
88 static int ad_version(u_int16_t);
91 #define AD_MAX_RETRIES 3
94 static u_int32_t adp_lun_map = 0;
95 static int ata_dma = 1;
96 static int ata_wc = 1;
97 static int ata_tags = 0;
98 TUNABLE_INT("hw.ata.ata_dma", &ata_dma);
99 TUNABLE_INT("hw.ata.wc", &ata_wc);
100 TUNABLE_INT("hw.ata.tags", &ata_tags);
101 static MALLOC_DEFINE(M_AD, "AD driver", "ATA disk driver");
104 SYSCTL_DECL(_hw_ata);
105 SYSCTL_INT(_hw_ata, OID_AUTO, ata_dma, CTLFLAG_RD, &ata_dma, 0,
106 "ATA disk DMA mode control");
107 SYSCTL_INT(_hw_ata, OID_AUTO, wc, CTLFLAG_RD, &ata_wc, 0,
108 "ATA disk write caching");
109 SYSCTL_INT(_hw_ata, OID_AUTO, tags, CTLFLAG_RD, &ata_tags, 0,
110 "ATA disk tagged queuing support");
113 ad_attach(struct ata_device *atadev, int alreadylocked)
115 struct ad_softc *adp;
118 if (!(adp = malloc(sizeof(struct ad_softc), M_AD, M_WAITOK | M_ZERO))) {
119 ata_prtdev(atadev, "failed to allocate driver storage\n");
123 KKASSERT(atadev->channel->req_mpipe.max_count != 0);
125 adp->device = atadev;
127 adp->lun = (device_get_unit(atadev->channel->dev)<<1)+ATA_DEV(atadev->unit);
129 adp->lun = ata_get_lun(&adp_lun_map);
131 ata_set_name(atadev, "ad", adp->lun);
132 adp->heads = atadev->param->heads;
133 adp->sectors = atadev->param->sectors;
134 adp->total_secs = atadev->param->cylinders * adp->heads * adp->sectors;
135 bufq_init(&adp->queue);
137 /* does this device need oldstyle CHS addressing */
138 if (!ad_version(atadev->param->version_major) ||
139 !(atadev->param->atavalid & ATA_FLAG_54_58) || !atadev->param->lba_size)
140 adp->flags |= AD_F_CHS_USED;
142 /* use the 28bit LBA size if valid */
143 if (atadev->param->cylinders == 16383 &&
144 adp->total_secs < atadev->param->lba_size)
145 adp->total_secs = atadev->param->lba_size;
147 /* use the 48bit LBA size if valid */
148 if (atadev->param->support.address48 &&
149 atadev->param->lba_size48 > 268435455)
150 adp->total_secs = atadev->param->lba_size48;
153 ATA_SLEEPLOCK_CH(atadev->channel, ATA_CONTROL);
154 /* use multiple sectors/interrupt if device supports it */
155 adp->transfersize = DEV_BSIZE;
156 if (ad_version(atadev->param->version_major)) {
157 int secsperint = max(1, min(atadev->param->sectors_intr, 16));
159 if (!ata_command(atadev, ATA_C_SET_MULTI, 0, secsperint,
160 0, ATA_WAIT_INTR) && !ata_wait(atadev, 0))
161 adp->transfersize *= secsperint;
164 /* enable read caching if not default on device */
165 if (ata_command(atadev, ATA_C_SETFEATURES,
166 0, 0, ATA_C_F_ENAB_RCACHE, ATA_WAIT_INTR))
167 ata_prtdev(atadev, "enabling readahead cache failed\n");
169 /* enable write caching if allowed and not default on device */
170 if (ata_wc || (ata_tags && ad_tagsupported(adp))) {
171 if (ata_command(atadev, ATA_C_SETFEATURES,
172 0, 0, ATA_C_F_ENAB_WCACHE, ATA_WAIT_INTR))
173 ata_prtdev(atadev, "enabling write cache failed\n");
176 if (ata_command(atadev, ATA_C_SETFEATURES,
177 0, 0, ATA_C_F_DIS_WCACHE, ATA_WAIT_INTR))
178 ata_prtdev(atadev, "disabling write cache failed\n");
181 /* use DMA if allowed and if drive/controller supports it */
183 ata_dmainit(atadev, ata_pmode(atadev->param),
184 ata_wmode(atadev->param), ata_umode(atadev->param));
186 ata_dmainit(atadev, ata_pmode(atadev->param), -1, -1);
188 /* use tagged queueing if allowed and supported */
189 if (ata_tags && ad_tagsupported(adp)) {
190 adp->num_tags = atadev->param->queuelen;
191 adp->flags |= AD_F_TAG_ENABLED;
192 adp->device->channel->flags |= ATA_QUEUED;
193 if (ata_command(atadev, ATA_C_SETFEATURES,
194 0, 0, ATA_C_F_DIS_RELIRQ, ATA_WAIT_INTR))
195 ata_prtdev(atadev, "disabling release interrupt failed\n");
196 if (ata_command(atadev, ATA_C_SETFEATURES,
197 0, 0, ATA_C_F_DIS_SRVIRQ, ATA_WAIT_INTR))
198 ata_prtdev(atadev, "disabling service interrupt failed\n");
201 ATA_UNLOCK_CH(atadev->channel);
203 devstat_add_entry(&adp->stats, "ad", adp->lun, DEV_BSIZE,
204 DEVSTAT_NO_ORDERED_TAGS,
205 DEVSTAT_TYPE_DIRECT | DEVSTAT_TYPE_IF_IDE,
206 DEVSTAT_PRIORITY_DISK);
208 dev = disk_create(adp->lun, &adp->disk, 0, &ad_cdevsw);
210 dev->si_iosize_max = 256 * DEV_BSIZE;
213 /* construct the disklabel */
214 bzero(&adp->disk.d_label, sizeof(struct disklabel));
215 adp->disk.d_label.d_secsize = DEV_BSIZE;
216 adp->disk.d_label.d_nsectors = adp->sectors;
217 adp->disk.d_label.d_ntracks = adp->heads;
218 adp->disk.d_label.d_ncylinders = adp->total_secs/(adp->heads*adp->sectors);
219 adp->disk.d_label.d_secpercyl = adp->sectors * adp->heads;
220 adp->disk.d_label.d_secperunit = adp->total_secs;
222 atadev->driver = adp;
225 /* if this disk belongs to an ATA RAID dont print the probe */
226 if (ata_raiddisk_attach(adp))
227 adp->flags |= AD_F_RAID_SUBDISK;
229 if (atadev->driver) {
231 ata_enclosure_print(atadev);
237 ad_detach(struct ata_device *atadev, int flush) /* get rid of flush XXX SOS */
239 struct ad_softc *adp = atadev->driver;
240 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->bp->b_error = ENXIO;
251 request->bp->b_flags |= B_ERROR;
252 biodone(request->bp);
255 while ((bp = bufq_first(&adp->queue))) {
256 bufq_remove(&adp->queue, bp);
258 bp->b_flags |= B_ERROR;
261 disk_invalidate(&adp->disk);
262 devstat_remove_entry(&adp->stats);
263 disk_destroy(&adp->disk);
265 if (ata_command(atadev, ATA_C_FLUSHCACHE, 0, 0, 0, ATA_WAIT_READY))
266 ata_prtdev(atadev, "flushing cache on detach failed\n");
268 if (adp->flags & AD_F_RAID_SUBDISK)
269 ata_raiddisk_detach(adp);
270 ata_free_name(atadev);
271 ata_free_lun(&adp_lun_map, adp->lun);
272 atadev->driver = NULL;
278 adopen(dev_t dev, int flags, int fmt, struct thread *td)
280 struct ad_softc *adp = dev->si_drv1;
282 if (adp->flags & AD_F_RAID_SUBDISK)
288 adclose(dev_t dev, int flags, int fmt, struct thread *td)
290 struct ad_softc *adp = dev->si_drv1;
292 ATA_SLEEPLOCK_CH(adp->device->channel, ATA_CONTROL);
293 if (ata_command(adp->device, ATA_C_FLUSHCACHE, 0, 0, 0, ATA_WAIT_READY))
294 ata_prtdev(adp->device, "flushing cache on close failed\n");
295 ATA_UNLOCK_CH(adp->device->channel);
300 adstrategy(struct buf *bp)
302 struct ad_softc *adp = bp->b_dev->si_drv1;
305 if (adp->device->flags & ATA_D_DETACHING) {
307 bp->b_flags |= B_ERROR;
312 bufqdisksort(&adp->queue, bp);
314 ata_start(adp->device->channel);
320 struct ad_softc *adp = dev->si_drv1;
321 struct ad_request request;
322 u_int count, blkno, secsize;
325 int dumppages = MAXDUMPPGS;
329 if ((error = disk_dumpcheck(dev, &count, &blkno, &secsize)))
335 /* force PIO mode for dumps */
336 adp->device->mode = ATA_PIO;
337 ata_reinit(adp->device->channel);
339 blkcnt = howmany(PAGE_SIZE, secsize);
345 if ((count / blkcnt) < dumppages)
346 dumppages = count / blkcnt;
348 for (i = 0; i < dumppages; ++i) {
349 vm_paddr_t a = addr + (i * PAGE_SIZE);
350 if (is_physical_memory(a))
351 va = pmap_kenter_temporary(trunc_page(a), i);
353 va = pmap_kenter_temporary(trunc_page(0), i);
356 bzero(&request, sizeof(struct ad_request));
358 request.blockaddr = blkno;
359 request.bytecount = PAGE_SIZE * dumppages;
362 while (request.bytecount > 0) {
363 ad_transfer(&request);
364 if (request.flags & ADR_F_ERROR)
366 request.donecount += request.currentsize;
367 request.bytecount -= request.currentsize;
371 if (dumpstatus(addr, (off_t)count * DEV_BSIZE) < 0)
374 blkno += blkcnt * dumppages;
375 count -= blkcnt * dumppages;
376 addr += PAGE_SIZE * dumppages;
379 if (ata_wait(adp->device, ATA_S_READY | ATA_S_DSC) < 0)
380 ata_prtdev(adp->device, "timeout waiting for final ready\n");
385 ad_start(struct ata_device *atadev)
387 struct ad_softc *adp = atadev->driver;
388 struct buf *bp = bufq_first(&adp->queue);
389 struct ad_request *request;
395 /* if tagged queueing enabled get next free tag */
396 if (adp->flags & AD_F_TAG_ENABLED) {
397 while (tag <= adp->num_tags && adp->tags[tag])
399 if (tag > adp->num_tags )
404 * Allocate a request. The allocation can only fail if the pipeline
405 * is full, in which case the request will be picked up later when
406 * ad_start() is called after another request completes.
408 request = mpipe_alloc(&atadev->channel->req_mpipe, M_NOWAIT|M_ZERO);
409 if (request == NULL) {
410 ata_prtdev(atadev, "pipeline full allocating request in ad_start\n");
415 request->softc = adp;
417 request->blockaddr = bp->b_pblkno;
418 request->bytecount = bp->b_bcount;
419 request->data = bp->b_data;
421 if (bp->b_flags & B_READ)
422 request->flags |= ADR_F_READ;
423 if (adp->device->mode >= ATA_DMA) {
424 request->dmatab = ata_dmaalloc(atadev->channel, atadev->unit, M_NOWAIT);
425 if (request->dmatab == NULL) {
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_transfer(struct ad_request *request)
446 struct ad_softc *adp;
448 u_int32_t count, max_count;
450 int flags = ATA_IMMEDIATE;
452 /* get request params */
453 adp = request->softc;
455 /* calculate transfer details */
456 lba = request->blockaddr + (request->donecount / DEV_BSIZE);
458 if (request->donecount == 0) {
460 /* start timeout for this transfer */
462 request->timeout_handle.callout = NULL;
464 request->timeout_handle =
465 timeout((timeout_t*)ad_timeout, request, 10 * hz);
467 /* setup transfer parameters */
468 count = howmany(request->bytecount, DEV_BSIZE);
469 max_count = adp->device->param->support.address48 ? 65536 : 256;
470 if (count > max_count) {
471 ata_prtdev(adp->device,
472 "count %d size transfers not supported\n", count);
476 if (adp->flags & AD_F_CHS_USED) {
477 int sector = (lba % adp->sectors) + 1;
478 int cylinder = lba / (adp->sectors * adp->heads);
479 int head = (lba % (adp->sectors * adp->heads)) / adp->sectors;
481 lba = (sector&0xff) | ((cylinder&0xffff)<<8) | ((head&0xf)<<24);
482 adp->device->flags |= ATA_D_USE_CHS;
485 /* setup first transfer length */
486 request->currentsize = min(request->bytecount, adp->transfersize);
488 devstat_start_transaction(&adp->stats);
490 /* does this drive & transfer work with DMA ? */
491 request->flags &= ~ADR_F_DMA_USED;
492 if (adp->device->mode >= ATA_DMA &&
493 !ata_dmasetup(adp->device->channel, adp->device->unit,
494 request->dmatab, request->data, request->bytecount)) {
495 request->flags |= ADR_F_DMA_USED;
496 request->currentsize = request->bytecount;
498 /* do we have tags enabled ? */
499 if (adp->flags & AD_F_TAG_ENABLED) {
500 cmd = (request->flags & ADR_F_READ) ?
501 ATA_C_READ_DMA_QUEUED : ATA_C_WRITE_DMA_QUEUED;
503 if (ata_command(adp->device, cmd, lba,
504 request->tag << 3, count, flags)) {
505 ata_prtdev(adp->device, "error executing command");
506 goto transfer_failed;
508 if (ata_wait(adp->device, ATA_S_READY)) {
509 ata_prtdev(adp->device, "timeout waiting for READY\n");
510 goto transfer_failed;
514 /* if ATA bus RELEASE check for SERVICE */
515 if (adp->flags & AD_F_TAG_ENABLED &&
516 ATA_INB(adp->device->channel->r_io, ATA_IREASON) &
518 return ad_service(adp, 1);
521 cmd = (request->flags & ADR_F_READ) ?
522 ATA_C_READ_DMA : ATA_C_WRITE_DMA;
524 if (ata_command(adp->device, cmd, lba, count, 0, flags)) {
525 ata_prtdev(adp->device, "error executing command");
526 goto transfer_failed;
530 * wait for data transfer phase
532 * well this should be here acording to specs, but older
533 * promise controllers doesn't like it, they lockup!
535 if (ata_wait(adp->device, ATA_S_READY | ATA_S_DRQ)) {
536 ata_prtdev(adp->device, "timeout waiting for data phase\n");
537 goto transfer_failed;
542 /* start transfer, return and wait for interrupt */
543 ata_dmastart(adp->device->channel, adp->device->unit,
544 request->dmatab, request->flags & ADR_F_READ);
545 return ATA_OP_CONTINUES;
548 /* does this drive support multi sector transfers ? */
549 if (request->currentsize > DEV_BSIZE)
550 cmd = request->flags&ADR_F_READ ? ATA_C_READ_MUL : ATA_C_WRITE_MUL;
552 /* just plain old single sector transfer */
554 cmd = request->flags&ADR_F_READ ? ATA_C_READ : ATA_C_WRITE;
556 if (ata_command(adp->device, cmd, lba, count, 0, flags)){
557 ata_prtdev(adp->device, "error executing command");
558 goto transfer_failed;
562 /* calculate this transfer length */
563 request->currentsize = min(request->bytecount, adp->transfersize);
565 /* if this is a PIO read operation, return and wait for interrupt */
566 if (request->flags & ADR_F_READ)
567 return ATA_OP_CONTINUES;
569 /* ready to write PIO data ? */
570 if (ata_wait(adp->device, (ATA_S_READY | ATA_S_DSC | ATA_S_DRQ)) < 0) {
571 ata_prtdev(adp->device, "timeout waiting for DRQ");
572 goto transfer_failed;
575 /* output the data */
576 if (adp->device->channel->flags & ATA_USE_16BIT)
577 ATA_OUTSW(adp->device->channel->r_io, ATA_DATA,
578 (void *)((uintptr_t)request->data + request->donecount),
579 request->currentsize / sizeof(int16_t));
581 ATA_OUTSL(adp->device->channel->r_io, ATA_DATA,
582 (void *)((uintptr_t)request->data + request->donecount),
583 request->currentsize / sizeof(int32_t));
584 return ATA_OP_CONTINUES;
587 untimeout((timeout_t *)ad_timeout, request, request->timeout_handle);
588 ad_invalidatequeue(adp, request);
589 printf(" - resetting\n");
591 /* if retries still permit, reinject this request */
592 if (request->retries++ < AD_MAX_RETRIES)
593 TAILQ_INSERT_HEAD(&adp->device->channel->ata_queue, request, chain);
595 /* retries all used up, return error */
596 request->bp->b_error = EIO;
597 request->bp->b_flags |= B_ERROR;
598 request->bp->b_resid = request->bytecount;
599 devstat_end_transaction_buf(&adp->stats, request->bp);
600 biodone(request->bp);
603 ata_reinit(adp->device->channel);
604 return ATA_OP_CONTINUES;
608 ad_interrupt(struct ad_request *request)
610 struct ad_softc *adp = request->softc;
613 /* finish DMA transfer */
614 if (request->flags & ADR_F_DMA_USED)
615 dma_stat = ata_dmadone(adp->device);
617 /* do we have a corrected soft error ? */
618 if (adp->device->channel->status & ATA_S_CORR)
619 diskerr(request->bp, "soft error (ECC corrected)", LOG_PRINTF,
620 request->blockaddr + (request->donecount / DEV_BSIZE),
623 /* did any real errors happen ? */
624 if ((adp->device->channel->status & ATA_S_ERROR) ||
625 (request->flags & ADR_F_DMA_USED && dma_stat & ATA_BMSTAT_ERROR)) {
626 adp->device->channel->error =
627 ATA_INB(adp->device->channel->r_io, ATA_ERROR);
628 diskerr(request->bp, (adp->device->channel->error & ATA_E_ICRC) ?
629 "UDMA ICRC error" : "hard error", LOG_PRINTF,
630 request->blockaddr + (request->donecount / DEV_BSIZE),
633 /* if this is a UDMA CRC error, reinject request */
634 if (request->flags & ADR_F_DMA_USED &&
635 adp->device->channel->error & ATA_E_ICRC) {
636 untimeout((timeout_t *)ad_timeout, request,request->timeout_handle);
637 ad_invalidatequeue(adp, request);
639 if (request->retries++ < AD_MAX_RETRIES)
640 printf(" retrying\n");
642 ata_dmainit(adp->device, ata_pmode(adp->device->param), -1, -1);
643 printf(" falling back to PIO mode\n");
645 TAILQ_INSERT_HEAD(&adp->device->channel->ata_queue, request, chain);
646 return ATA_OP_FINISHED;
649 /* if using DMA, try once again in PIO mode */
650 if (request->flags & ADR_F_DMA_USED) {
651 untimeout((timeout_t *)ad_timeout, request,request->timeout_handle);
652 ad_invalidatequeue(adp, request);
653 ata_dmainit(adp->device, ata_pmode(adp->device->param), -1, -1);
654 request->flags |= ADR_F_FORCE_PIO;
655 printf(" trying PIO mode\n");
656 TAILQ_INSERT_HEAD(&adp->device->channel->ata_queue, request, chain);
657 return ATA_OP_FINISHED;
660 request->flags |= ADR_F_ERROR;
661 printf(" status=%02x error=%02x\n",
662 adp->device->channel->status, adp->device->channel->error);
665 /* if we arrived here with forced PIO mode, DMA doesn't work right */
666 if (request->flags & ADR_F_FORCE_PIO && !(request->flags & ADR_F_ERROR))
667 ata_prtdev(adp->device, "DMA problem fallback to PIO mode\n");
669 /* if this was a PIO read operation, get the data */
670 if (!(request->flags & ADR_F_DMA_USED) &&
671 (request->flags & (ADR_F_READ | ADR_F_ERROR)) == ADR_F_READ) {
673 /* ready to receive data? */
674 if ((adp->device->channel->status & ATA_S_READY) == 0)
675 ata_prtdev(adp->device, "read interrupt arrived early");
677 if (ata_wait(adp->device, (ATA_S_READY | ATA_S_DSC | ATA_S_DRQ)) != 0) {
678 ata_prtdev(adp->device, "read error detected (too) late");
679 request->flags |= ADR_F_ERROR;
682 /* data ready, read in */
683 if (adp->device->channel->flags & ATA_USE_16BIT)
684 ATA_INSW(adp->device->channel->r_io, ATA_DATA,
685 (void*)((uintptr_t)request->data + request->donecount),
686 request->currentsize / sizeof(int16_t));
688 ATA_INSL(adp->device->channel->r_io, ATA_DATA,
689 (void*)((uintptr_t)request->data + request->donecount),
690 request->currentsize / sizeof(int32_t));
694 /* finish up transfer */
695 if (request->flags & ADR_F_ERROR) {
696 request->bp->b_error = EIO;
697 request->bp->b_flags |= B_ERROR;
700 request->bytecount -= request->currentsize;
701 request->donecount += request->currentsize;
702 if (request->bytecount > 0) {
703 ad_transfer(request);
704 return ATA_OP_CONTINUES;
708 /* disarm timeout for this transfer */
709 untimeout((timeout_t *)ad_timeout, request, request->timeout_handle);
711 request->bp->b_resid = request->bytecount;
713 devstat_end_transaction_buf(&adp->stats, request->bp);
714 biodone(request->bp);
718 /* check for SERVICE (tagged operations only) */
719 return ad_service(adp, 1);
723 ad_service(struct ad_softc *adp, int change)
725 /* do we have to check the other device on this channel ? */
726 if (adp->device->channel->flags & ATA_QUEUED && change) {
727 int device = adp->device->unit;
729 if (adp->device->unit == ATA_MASTER) {
730 if ((adp->device->channel->devices & ATA_ATA_SLAVE) &&
731 (adp->device->channel->device[SLAVE].driver) &&
732 ((struct ad_softc *) (adp->device->channel->
733 device[SLAVE].driver))->flags & AD_F_TAG_ENABLED)
737 if ((adp->device->channel->devices & ATA_ATA_MASTER) &&
738 (adp->device->channel->device[MASTER].driver) &&
739 ((struct ad_softc *) (adp->device->channel->
740 device[MASTER].driver))->flags & AD_F_TAG_ENABLED)
743 if (device != adp->device->unit &&
745 (adp->device->channel->
746 device[ATA_DEV(device)].driver))->outstanding > 0) {
747 ATA_OUTB(adp->device->channel->r_io, ATA_DRIVE, ATA_D_IBM | device);
748 adp = adp->device->channel->device[ATA_DEV(device)].driver;
752 adp->device->channel->status =
753 ATA_INB(adp->device->channel->r_altio, ATA_ALTSTAT);
755 /* do we have a SERVICE request from the drive ? */
756 if (adp->flags & AD_F_TAG_ENABLED &&
757 adp->outstanding > 0 &&
758 adp->device->channel->status & ATA_S_SERVICE) {
759 struct ad_request *request;
762 /* check for error */
763 if (adp->device->channel->status & ATA_S_ERROR) {
764 ata_prtdev(adp->device, "Oops! controller says s=0x%02x e=0x%02x\n",
765 adp->device->channel->status,
766 adp->device->channel->error);
767 ad_invalidatequeue(adp, NULL);
768 return ATA_OP_FINISHED;
771 /* issue SERVICE cmd */
772 if (ata_command(adp->device, ATA_C_SERVICE, 0, 0, 0, ATA_IMMEDIATE)) {
773 ata_prtdev(adp->device, "problem executing SERVICE cmd\n");
774 ad_invalidatequeue(adp, NULL);
775 return ATA_OP_FINISHED;
778 /* setup the transfer environment when ready */
779 if (ata_wait(adp->device, ATA_S_READY)) {
780 ata_prtdev(adp->device, "SERVICE timeout tag=%d s=%02x e=%02x\n",
781 ATA_INB(adp->device->channel->r_io, ATA_COUNT) >> 3,
782 adp->device->channel->status,
783 adp->device->channel->error);
784 ad_invalidatequeue(adp, NULL);
785 return ATA_OP_FINISHED;
787 tag = ATA_INB(adp->device->channel->r_io, ATA_COUNT) >> 3;
788 if (!(request = adp->tags[tag])) {
789 ata_prtdev(adp->device, "no request for tag=%d\n", tag);
790 ad_invalidatequeue(adp, NULL);
791 return ATA_OP_FINISHED;
793 ATA_FORCELOCK_CH(adp->device->channel, ATA_ACTIVE_ATA);
794 adp->device->channel->running = request;
797 /* start DMA transfer when ready */
798 if (ata_wait(adp->device, ATA_S_READY | ATA_S_DRQ)) {
799 ata_prtdev(adp->device, "timeout starting DMA s=%02x e=%02x\n",
800 adp->device->channel->status,
801 adp->device->channel->error);
802 ad_invalidatequeue(adp, NULL);
803 return ATA_OP_FINISHED;
805 ata_dmastart(adp->device->channel, adp->device->unit,
806 request->dmatab, request->flags & ADR_F_READ);
807 return ATA_OP_CONTINUES;
809 return ATA_OP_FINISHED;
813 ad_free(struct ad_request *request)
818 ata_dmafree(request->softc->device->channel, request->dmatab);
819 request->softc->tags[request->tag] = NULL;
820 mpipe_free(&request->softc->device->channel->req_mpipe, request);
825 ad_invalidatequeue(struct ad_softc *adp, struct ad_request *request)
827 /* if tags used invalidate all other tagged transfers */
828 if (adp->flags & AD_F_TAG_ENABLED) {
829 struct ad_request *tmpreq;
832 ata_prtdev(adp->device, "invalidating queued requests\n");
833 for (tag = 0; tag <= adp->num_tags; tag++) {
834 tmpreq = adp->tags[tag];
835 adp->tags[tag] = NULL;
836 if (tmpreq == request || tmpreq == NULL)
838 untimeout((timeout_t *)ad_timeout, tmpreq, tmpreq->timeout_handle);
839 TAILQ_INSERT_HEAD(&adp->device->channel->ata_queue, tmpreq, chain);
841 if (ata_command(adp->device, ATA_C_NOP,
842 0, 0, ATA_C_F_FLUSHQUEUE, ATA_WAIT_READY))
843 ata_prtdev(adp->device, "flush queue failed\n");
844 adp->outstanding = 0;
849 ad_tagsupported(struct ad_softc *adp)
851 const char *good[] = {"IBM-DPTA", "IBM-DTLA", NULL};
854 switch (adp->device->channel->chiptype) {
855 case 0x4d33105a: /* Promises before TX2 doesn't work with tagged queuing */
862 /* check that drive does DMA, has tags enabled, and is one we know works */
863 if (adp->device->mode >= ATA_DMA && adp->device->param->support.queued &&
864 adp->device->param->enabled.queued) {
865 while (good[i] != NULL) {
866 if (!strncmp(adp->device->param->model, good[i], strlen(good[i])))
871 * check IBM's new obscure way of naming drives
872 * we want "IC" (IBM CORP) and "AT" or "AV" (ATA interface)
873 * but doesn't care about the other info (size, capacity etc)
875 if (!strncmp(adp->device->param->model, "IC", 2) &&
876 (!strncmp(adp->device->param->model + 8, "AT", 2) ||
877 !strncmp(adp->device->param->model + 8, "AV", 2)))
884 ad_timeout(struct ad_request *request)
886 struct ad_softc *adp = request->softc;
888 adp->device->channel->running = NULL;
889 ata_prtdev(adp->device, "%s command timeout tag=%d serv=%d - resetting\n",
890 (request->flags & ADR_F_READ) ? "READ" : "WRITE",
891 request->tag, request->serv);
893 if (request->flags & ADR_F_DMA_USED) {
894 ata_dmadone(adp->device);
895 ad_invalidatequeue(adp, request);
896 if (request->retries == AD_MAX_RETRIES) {
897 ata_dmainit(adp->device, ata_pmode(adp->device->param), -1, -1);
898 ata_prtdev(adp->device, "trying fallback to PIO mode\n");
899 request->retries = 0;
903 /* if retries still permit, reinject this request */
904 if (request->retries++ < AD_MAX_RETRIES) {
905 TAILQ_INSERT_HEAD(&adp->device->channel->ata_queue, request, chain);
908 /* retries all used up, return error */
909 request->bp->b_error = EIO;
910 request->bp->b_flags |= B_ERROR;
911 devstat_end_transaction_buf(&adp->stats, request->bp);
912 biodone(request->bp);
915 ata_reinit(adp->device->channel);
919 ad_reinit(struct ata_device *atadev)
921 struct ad_softc *adp = atadev->driver;
923 /* reinit disk parameters */
924 ad_invalidatequeue(atadev->driver, NULL);
925 ata_command(atadev, ATA_C_SET_MULTI, 0,
926 adp->transfersize / DEV_BSIZE, 0, ATA_WAIT_READY);
927 if (adp->device->mode >= ATA_DMA)
928 ata_dmainit(atadev, ata_pmode(adp->device->param),
929 ata_wmode(adp->device->param),
930 ata_umode(adp->device->param));
932 ata_dmainit(atadev, ata_pmode(adp->device->param), -1, -1);
936 ad_print(struct ad_softc *adp)
939 ata_prtdev(adp->device, "<%.40s/%.8s> ATA-%d disk at ata%d-%s\n",
940 adp->device->param->model, adp->device->param->revision,
941 ad_version(adp->device->param->version_major),
942 device_get_unit(adp->device->channel->dev),
943 (adp->device->unit == ATA_MASTER) ? "master" : "slave");
945 ata_prtdev(adp->device,
946 "%lluMB (%llu sectors), %llu C, %u H, %u S, %u B\n",
947 (unsigned long long)(adp->total_secs /
948 ((1024L*1024L)/DEV_BSIZE)),
949 (unsigned long long) adp->total_secs,
950 (unsigned long long) (adp->total_secs /
951 (adp->heads * adp->sectors)),
952 adp->heads, adp->sectors, DEV_BSIZE);
954 ata_prtdev(adp->device, "%d secs/int, %d depth queue, %s%s\n",
955 adp->transfersize / DEV_BSIZE, adp->num_tags + 1,
956 (adp->flags & AD_F_TAG_ENABLED) ? "tagged " : "",
957 ata_mode2str(adp->device->mode));
959 ata_prtdev(adp->device, "piomode=%d dmamode=%d udmamode=%d cblid=%d\n",
960 ata_pmode(adp->device->param), ata_wmode(adp->device->param),
961 ata_umode(adp->device->param),
962 adp->device->param->hwres_cblid);
966 ata_prtdev(adp->device,"%lluMB <%.40s> [%lld/%d/%d] at ata%d-%s %s%s\n",
967 (unsigned long long)(adp->total_secs /
968 ((1024L * 1024L) / DEV_BSIZE)),
969 adp->device->param->model,
970 (unsigned long long)(adp->total_secs /
971 (adp->heads*adp->sectors)),
972 adp->heads, adp->sectors,
973 device_get_unit(adp->device->channel->dev),
974 (adp->device->unit == ATA_MASTER) ? "master" : "slave",
975 (adp->flags & AD_F_TAG_ENABLED) ? "tagged " : "",
976 ata_mode2str(adp->device->mode));
980 ad_version(u_int16_t version)
984 if (version == 0xffff)
986 for (bit = 15; bit >= 0; bit--)
987 if (version & (1<<bit))