2 * Copyright (c) 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-raid.c,v 1.3.2.19 2003/01/30 07:19:59 sos Exp $
29 * $DragonFly: src/sys/dev/disk/ata/ata-raid.c,v 1.6 2003/07/21 05:50:27 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 <machine/bus.h>
46 #include <dev/ata/ata-all.h>
47 #include <dev/ata/ata-disk.h>
48 #include <dev/ata/ata-raid.h>
52 /* device structures */
53 static d_open_t aropen;
54 static d_strategy_t arstrategy;
56 static struct cdevsw ar_cdevsw = {
64 /* close */ nullclose,
66 /* write */ physwrite,
70 /* strategy */ arstrategy,
74 static struct cdevsw ardisk_cdevsw;
77 static void ar_attach_raid(struct ar_softc *, int);
78 static void ar_done(struct buf *);
79 static void ar_config_changed(struct ar_softc *, int);
80 static int ar_rebuild(struct ar_softc *);
81 static int ar_highpoint_read_conf(struct ad_softc *, struct ar_softc **);
82 static int ar_highpoint_write_conf(struct ar_softc *);
83 static int ar_promise_read_conf(struct ad_softc *, struct ar_softc **, int);
84 static int ar_promise_write_conf(struct ar_softc *);
85 static int ar_rw(struct ad_softc *, u_int32_t, int, caddr_t, int);
86 static struct ata_device *ar_locate_disk(int);
89 static struct ar_softc **ar_table = NULL;
90 static MALLOC_DEFINE(M_AR, "AR driver", "ATA RAID driver");
93 ata_raiddisk_attach(struct ad_softc *adp)
99 for (array = 0; array < MAX_ARRAYS; array++) {
100 if (!(rdp = ar_table[array]) || !rdp->flags)
103 for (disk = 0; disk < rdp->total_disks; disk++) {
104 if ((rdp->disks[disk].flags & AR_DF_ASSIGNED) &&
105 rdp->disks[disk].device == adp->device) {
106 ata_prtdev(rdp->disks[disk].device,
107 "inserted into ar%d disk%d as spare\n",
109 rdp->disks[disk].flags |= (AR_DF_PRESENT | AR_DF_SPARE);
110 AD_SOFTC(rdp->disks[disk])->flags = AD_F_RAID_SUBDISK;
111 ar_config_changed(rdp, 1);
119 ar_table = malloc(sizeof(struct ar_soft *) * MAX_ARRAYS,
120 M_AR, M_NOWAIT | M_ZERO);
122 ata_prtdev(adp->device, "no memory for ATA raid array\n");
126 switch(adp->device->channel->chiptype) {
127 case 0x4d33105a: case 0x4d38105a: case 0x4d30105a:
128 case 0x0d30105a: case 0x4d68105a: case 0x6268105a:
129 case 0x4d69105a: case 0x5275105a: case 0x6269105a:
131 /* test RAID bit in PCI reg XXX */
132 return (ar_promise_read_conf(adp, ar_table, 0));
134 case 0x00041103: case 0x00051103: case 0x00081103:
135 return (ar_highpoint_read_conf(adp, ar_table));
138 return (ar_promise_read_conf(adp, ar_table, 1));
144 ata_raiddisk_detach(struct ad_softc *adp)
146 struct ar_softc *rdp;
150 for (array = 0; array < MAX_ARRAYS; array++) {
151 if (!(rdp = ar_table[array]) || !rdp->flags)
153 for (disk = 0; disk < rdp->total_disks; disk++) {
154 if (rdp->disks[disk].device == adp->device) {
155 ata_prtdev(rdp->disks[disk].device,
156 "deleted from ar%d disk%d\n", array, disk);
157 rdp->disks[disk].flags &= ~(AR_DF_PRESENT | AR_DF_ONLINE);
158 AD_SOFTC(rdp->disks[disk])->flags &= ~AD_F_RAID_SUBDISK;
159 ar_config_changed(rdp, 1);
171 struct ar_softc *rdp;
177 for (array = 0; array < MAX_ARRAYS; array++) {
178 if (!(rdp = ar_table[array]) || !rdp->flags)
180 ar_attach_raid(rdp, 0);
185 ar_attach_raid(struct ar_softc *rdp, int update)
190 ar_config_changed(rdp, update);
191 dev = disk_create(rdp->lun, &rdp->disk, 0, &ar_cdevsw, &ardisk_cdevsw);
193 dev->si_iosize_max = 256 * DEV_BSIZE;
196 printf("ar%d: %lluMB <ATA ", rdp->lun, (unsigned long long)
197 (rdp->total_sectors / ((1024L * 1024L) / DEV_BSIZE)));
198 switch (rdp->flags & (AR_F_RAID0 | AR_F_RAID1 | AR_F_SPAN)) {
200 printf("RAID0 "); break;
202 printf("RAID1 "); break;
204 printf("SPAN "); break;
205 case (AR_F_RAID0 | AR_F_RAID1):
206 printf("RAID0+1 "); break;
208 printf("unknown 0x%x> ", rdp->flags);
211 printf("array> [%d/%d/%d] status: ",
212 rdp->cylinders, rdp->heads, rdp->sectors);
213 switch (rdp->flags & (AR_F_DEGRADED | AR_F_READY)) {
217 case (AR_F_DEGRADED | AR_F_READY):
224 printf(" subdisks:\n");
225 for (disk = 0; disk < rdp->total_disks; disk++) {
226 if (rdp->disks[disk].flags & AR_DF_PRESENT) {
227 if (rdp->disks[disk].flags & AR_DF_ONLINE)
228 printf(" %d READY ", disk);
229 else if (rdp->disks[disk].flags & AR_DF_SPARE)
230 printf(" %d SPARE ", disk);
232 printf(" %d FREE ", disk);
233 ad_print(AD_SOFTC(rdp->disks[disk]));
235 ata_enclosure_print(AD_SOFTC(rdp->disks[disk])->device);
237 else if (rdp->disks[disk].flags & AR_DF_ASSIGNED)
238 printf(" %d DOWN\n", disk);
240 printf(" %d INVALID no RAID config info on this disk\n", disk);
245 ata_raid_create(struct raid_setup *setup)
247 struct ata_device *atadev;
248 struct ar_softc *rdp;
250 int ctlr = 0, disk_size = 0, total_disks = 0;
253 ar_table = malloc(sizeof(struct ar_soft *) * MAX_ARRAYS,
254 M_AR, M_NOWAIT | M_ZERO);
256 printf("ar: no memory for ATA raid array\n");
259 for (array = 0; array < MAX_ARRAYS; array++) {
260 if (!ar_table[array])
263 if (array >= MAX_ARRAYS)
266 if (!(rdp = (struct ar_softc*)malloc(sizeof(struct ar_softc), M_AR,
267 M_NOWAIT | M_ZERO))) {
268 printf("ar%d: failed to allocate raid config storage\n", array);
272 for (disk = 0; disk < setup->total_disks; disk++) {
273 if ((atadev = ar_locate_disk(setup->disks[disk]))) {
274 rdp->disks[disk].device = atadev;
275 if (AD_SOFTC(rdp->disks[disk])->flags & AD_F_RAID_SUBDISK) {
276 setup->disks[disk] = -1;
281 switch (rdp->disks[disk].device->channel->chiptype & 0xffff) {
283 ctlr |= AR_F_HIGHPOINT_RAID;
284 rdp->disks[disk].disk_sectors =
285 AD_SOFTC(rdp->disks[disk])->total_secs;
289 ctlr |= AR_F_FREEBSD_RAID;
293 ctlr |= AR_F_PROMISE_RAID;
294 rdp->disks[disk].disk_sectors =
295 PR_LBA(AD_SOFTC(rdp->disks[disk]));
298 if ((rdp->flags & (AR_F_PROMISE_RAID|AR_F_HIGHPOINT_RAID)) &&
299 (rdp->flags & (AR_F_PROMISE_RAID|AR_F_HIGHPOINT_RAID)) !=
300 (ctlr & (AR_F_PROMISE_RAID|AR_F_HIGHPOINT_RAID))) {
308 disk_size = min(rdp->disks[disk].disk_sectors, disk_size);
310 disk_size = rdp->disks[disk].disk_sectors;
311 rdp->disks[disk].flags =
312 (AR_DF_PRESENT | AR_DF_ASSIGNED | AR_DF_ONLINE);
317 setup->disks[disk] = -1;
327 switch (setup->type) {
329 rdp->flags |= AR_F_RAID0;
332 rdp->flags |= AR_F_RAID1;
333 if (total_disks != 2) {
339 rdp->flags |= (AR_F_RAID0 | AR_F_RAID1);
340 if (total_disks % 2 != 0) {
346 rdp->flags |= AR_F_SPAN;
350 for (disk = 0; disk < total_disks; disk++)
351 AD_SOFTC(rdp->disks[disk])->flags = AD_F_RAID_SUBDISK;
354 if (rdp->flags & AR_F_RAID0) {
357 while (setup->interleave >>= 1)
359 if (rdp->flags & AR_F_PROMISE_RAID)
360 rdp->interleave = min(max(2, 1 << bit), 2048);
361 if (rdp->flags & AR_F_HIGHPOINT_RAID)
362 rdp->interleave = min(max(32, 1 << bit), 128);
364 rdp->total_disks = total_disks;
365 rdp->width = total_disks / ((rdp->flags & AR_F_RAID1) ? 2 : 1);
366 rdp->total_sectors = disk_size * rdp->width;
369 rdp->cylinders = rdp->total_sectors / (255 * 63);
370 if (rdp->flags & AR_F_PROMISE_RAID) {
374 if (rdp->flags & AR_F_HIGHPOINT_RAID) {
375 rdp->offset = HPT_LBA + 1;
376 rdp->reserved = HPT_LBA + 1;
378 rdp->lock_start = rdp->lock_end = 0xffffffff;
379 rdp->flags |= AR_F_READY;
381 ar_table[array] = rdp;
382 ar_attach_raid(rdp, 1);
388 ata_raid_delete(int array)
390 struct ar_softc *rdp;
394 printf("ar: no memory for ATA raid array\n");
397 if (!(rdp = ar_table[array]))
400 rdp->flags &= ~AR_F_READY;
401 for (disk = 0; disk < rdp->total_disks; disk++) {
402 if ((rdp->disks[disk].flags&AR_DF_PRESENT) && rdp->disks[disk].device) {
403 AD_SOFTC(rdp->disks[disk])->flags &= ~AD_F_RAID_SUBDISK;
404 ata_enclosure_leds(rdp->disks[disk].device, ATA_LED_GREEN);
405 rdp->disks[disk].flags = 0;
408 if (rdp->flags & AR_F_PROMISE_RAID)
409 ar_promise_write_conf(rdp);
411 ar_highpoint_write_conf(rdp);
412 disk_invalidate(&rdp->disk);
413 disk_destroy(rdp->dev);
415 ar_table[array] = NULL;
420 ata_raid_status(int array, struct raid_status *status)
422 struct ar_softc *rdp;
425 if (!ar_table || !(rdp = ar_table[array]))
428 switch (rdp->flags & (AR_F_RAID0 | AR_F_RAID1 | AR_F_SPAN)) {
430 status->type = AR_RAID0;
433 status->type = AR_RAID1;
435 case AR_F_RAID0 | AR_F_RAID1:
436 status->type = AR_RAID0 | AR_RAID1;
439 status->type = AR_SPAN;
442 status->total_disks = rdp->total_disks;
443 for (i = 0; i < rdp->total_disks; i++ ) {
444 if ((rdp->disks[i].flags & AR_DF_PRESENT) && rdp->disks[i].device)
445 status->disks[i] = AD_SOFTC(rdp->disks[i])->lun;
447 status->disks[i] = -1;
449 status->interleave = rdp->interleave;
451 if (rdp->flags & AR_F_READY)
452 status->status |= AR_READY;
453 if (rdp->flags & AR_F_DEGRADED)
454 status->status |= AR_DEGRADED;
455 if (rdp->flags & AR_F_REBUILDING) {
456 status->status |= AR_REBUILDING;
457 status->progress = 100*rdp->lock_start/(rdp->total_sectors/rdp->width);
463 ata_raid_rebuild(int array)
465 struct ar_softc *rdp;
467 if (!ar_table || !(rdp = ar_table[array]))
469 if (rdp->flags & AR_F_REBUILDING)
471 /* create process here XXX SOS */
472 return ar_rebuild(rdp);
476 aropen(dev_t dev, int flags, int fmt, struct thread *td)
478 struct ar_softc *rdp = dev->si_drv1;
479 struct disklabel *dl;
481 dl = &rdp->disk.d_label;
482 bzero(dl, sizeof *dl);
483 dl->d_secsize = DEV_BSIZE;
484 dl->d_nsectors = rdp->sectors;
485 dl->d_ntracks = rdp->heads;
486 dl->d_ncylinders = rdp->cylinders;
487 dl->d_secpercyl = rdp->sectors * rdp->heads;
488 dl->d_secperunit = rdp->total_sectors;
493 arstrategy(struct buf *bp)
495 struct ar_softc *rdp = bp->b_dev->si_drv1;
496 int blkno, count, chunk, lba, lbs, tmplba;
497 int drv = 0, change = 0;
500 if (!(rdp->flags & AR_F_READY)) {
501 bp->b_flags |= B_ERROR;
507 bp->b_resid = bp->b_bcount;
508 blkno = bp->b_pblkno;
510 for (count = howmany(bp->b_bcount, DEV_BSIZE); count > 0;
511 count -= chunk, blkno += chunk, data += (chunk * DEV_BSIZE)) {
512 struct ar_buf *buf1, *buf2;
514 switch (rdp->flags & (AR_F_RAID0 | AR_F_RAID1 | AR_F_SPAN)) {
517 while (lba >= AD_SOFTC(rdp->disks[drv])->total_secs-rdp->reserved)
518 lba -= AD_SOFTC(rdp->disks[drv++])->total_secs-rdp->reserved;
519 chunk = min(AD_SOFTC(rdp->disks[drv])->total_secs-rdp->reserved-lba,
524 case AR_F_RAID0 | AR_F_RAID1:
525 tmplba = blkno / rdp->interleave;
526 chunk = blkno % rdp->interleave;
527 if (tmplba == rdp->total_sectors / rdp->interleave) {
528 lbs = (rdp->total_sectors-(tmplba*rdp->interleave))/rdp->width;
530 lba = ((tmplba/rdp->width)*rdp->interleave) + chunk%lbs;
531 chunk = min(count, lbs);
534 drv = tmplba % rdp->width;
535 lba = ((tmplba / rdp->width) * rdp->interleave) + chunk;
536 chunk = min(count, rdp->interleave - chunk);
547 printf("ar%d: unknown array type in arstrategy\n", rdp->lun);
548 bp->b_flags |= B_ERROR;
554 buf1 = malloc(sizeof(struct ar_buf), M_AR, M_NOWAIT | M_ZERO);
555 BUF_LOCKINIT(&buf1->bp);
556 BUF_LOCK(&buf1->bp, LK_EXCLUSIVE);
557 buf1->bp.b_pblkno = lba;
558 if ((buf1->drive = drv) > 0)
559 buf1->bp.b_pblkno += rdp->offset;
560 buf1->bp.b_caller1 = (void *)rdp;
561 buf1->bp.b_bcount = chunk * DEV_BSIZE;
562 buf1->bp.b_data = data;
563 buf1->bp.b_flags = bp->b_flags | B_CALL;
564 buf1->bp.b_iodone = ar_done;
567 switch (rdp->flags & (AR_F_RAID0 | AR_F_RAID1 | AR_F_SPAN)) {
570 if ((rdp->disks[buf1->drive].flags &
571 (AR_DF_PRESENT|AR_DF_ONLINE))==(AR_DF_PRESENT|AR_DF_ONLINE) &&
572 !AD_SOFTC(rdp->disks[buf1->drive])->dev->si_disk) {
573 rdp->disks[buf1->drive].flags &= ~AR_DF_ONLINE;
574 ar_config_changed(rdp, 1);
576 bp->b_flags |= B_ERROR;
581 buf1->bp.b_dev = AD_SOFTC(rdp->disks[buf1->drive])->dev;
582 AR_STRATEGY((struct buf *)buf1);
586 case AR_F_RAID0 | AR_F_RAID1:
587 if ((rdp->flags & AR_F_REBUILDING) && !(bp->b_flags & B_READ)) {
588 if ((bp->b_pblkno >= rdp->lock_start &&
589 bp->b_pblkno < rdp->lock_end) ||
590 ((bp->b_pblkno + chunk) > rdp->lock_start &&
591 (bp->b_pblkno + chunk) <= rdp->lock_end)) {
592 tsleep(rdp, 0, "arwait", 0);
595 if ((rdp->disks[buf1->drive].flags &
596 (AR_DF_PRESENT|AR_DF_ONLINE))==(AR_DF_PRESENT|AR_DF_ONLINE) &&
597 !AD_SOFTC(rdp->disks[buf1->drive])->dev->si_disk) {
598 rdp->disks[buf1->drive].flags &= ~AR_DF_ONLINE;
601 if ((rdp->disks[buf1->drive + rdp->width].flags &
602 (AR_DF_PRESENT|AR_DF_ONLINE))==(AR_DF_PRESENT|AR_DF_ONLINE) &&
603 !AD_SOFTC(rdp->disks[buf1->drive + rdp->width])->dev->si_disk) {
604 rdp->disks[buf1->drive + rdp->width].flags &= ~AR_DF_ONLINE;
608 ar_config_changed(rdp, 1);
610 if (!(rdp->flags & AR_F_READY)) {
612 bp->b_flags |= B_ERROR;
617 if (bp->b_flags & B_READ) {
618 if ((buf1->bp.b_pblkno <
619 (rdp->disks[buf1->drive].last_lba - AR_PROXIMITY) ||
621 (rdp->disks[buf1->drive].last_lba + AR_PROXIMITY) ||
622 !(rdp->disks[buf1->drive].flags & AR_DF_ONLINE)) &&
623 (rdp->disks[buf1->drive+rdp->width].flags & AR_DF_ONLINE))
624 buf1->drive = buf1->drive + rdp->width;
627 if ((rdp->disks[buf1->drive+rdp->width].flags & AR_DF_ONLINE) ||
628 ((rdp->flags & AR_F_REBUILDING) &&
629 (rdp->disks[buf1->drive+rdp->width].flags & AR_DF_SPARE) &&
630 buf1->bp.b_pblkno < rdp->lock_start)) {
631 if ((rdp->disks[buf1->drive].flags & AR_DF_ONLINE) ||
632 ((rdp->flags & AR_F_REBUILDING) &&
633 (rdp->disks[buf1->drive].flags & AR_DF_SPARE) &&
634 buf1->bp.b_pblkno < rdp->lock_start)) {
635 buf2 = malloc(sizeof(struct ar_buf), M_AR, M_NOWAIT);
636 bcopy(buf1, buf2, sizeof(struct ar_buf));
637 BUF_LOCKINIT(&buf2->bp);
638 BUF_LOCK(&buf2->bp, LK_EXCLUSIVE);
641 buf2->drive = buf1->drive + rdp->width;
642 buf2->bp.b_dev = AD_SOFTC(rdp->disks[buf2->drive])->dev;
643 AR_STRATEGY((struct buf *)buf2);
644 rdp->disks[buf2->drive].last_lba =
645 buf2->bp.b_pblkno + chunk;
648 buf1->drive = buf1->drive + rdp->width;
651 buf1->bp.b_dev = AD_SOFTC(rdp->disks[buf1->drive])->dev;
652 AR_STRATEGY((struct buf *)buf1);
653 rdp->disks[buf1->drive].last_lba = buf1->bp.b_pblkno + chunk;
657 printf("ar%d: unknown array type in arstrategy\n", rdp->lun);
663 ar_done(struct buf *bp)
665 struct ar_softc *rdp = (struct ar_softc *)bp->b_caller1;
666 struct ar_buf *buf = (struct ar_buf *)bp;
668 switch (rdp->flags & (AR_F_RAID0 | AR_F_RAID1 | AR_F_SPAN)) {
671 if (buf->bp.b_flags & B_ERROR) {
672 rdp->disks[buf->drive].flags &= ~AR_DF_ONLINE;
673 ar_config_changed(rdp, 1);
674 buf->org->b_flags |= B_ERROR;
675 buf->org->b_error = EIO;
679 buf->org->b_resid -= buf->bp.b_bcount;
680 if (buf->org->b_resid == 0)
686 case AR_F_RAID0 | AR_F_RAID1:
687 if (buf->bp.b_flags & B_ERROR) {
688 rdp->disks[buf->drive].flags &= ~AR_DF_ONLINE;
689 ar_config_changed(rdp, 1);
690 if (rdp->flags & AR_F_READY) {
691 if (buf->bp.b_flags & B_READ) {
692 if (buf->drive < rdp->width)
693 buf->drive = buf->drive + rdp->width;
695 buf->drive = buf->drive - rdp->width;
696 buf->bp.b_dev = AD_SOFTC(rdp->disks[buf->drive])->dev;
697 buf->bp.b_flags = buf->org->b_flags | B_CALL;
699 AR_STRATEGY((struct buf *)buf);
703 if (buf->flags & AB_F_DONE) {
704 buf->org->b_resid -= buf->bp.b_bcount;
705 if (buf->org->b_resid == 0)
709 buf->mirror->flags |= AB_F_DONE;
713 buf->org->b_flags |= B_ERROR;
714 buf->org->b_error = EIO;
719 if (!(buf->bp.b_flags & B_READ)) {
720 if (buf->mirror && !(buf->flags & AB_F_DONE)){
721 buf->mirror->flags |= AB_F_DONE;
725 buf->org->b_resid -= buf->bp.b_bcount;
726 if (buf->org->b_resid == 0)
732 printf("ar%d: unknown array type in ar_done\n", rdp->lun);
738 ar_config_changed(struct ar_softc *rdp, int writeback)
743 rdp->flags |= AR_F_READY;
744 rdp->flags &= ~AR_F_DEGRADED;
746 for (disk = 0; disk < rdp->total_disks; disk++)
747 if (!(rdp->disks[disk].flags & AR_DF_PRESENT))
748 rdp->disks[disk].flags &= ~AR_DF_ONLINE;
750 for (disk = 0; disk < rdp->total_disks; disk++) {
751 switch (rdp->flags & (AR_F_RAID0 | AR_F_RAID1 | AR_F_SPAN)) {
754 if (!(rdp->disks[disk].flags & AR_DF_ONLINE)) {
755 rdp->flags &= ~AR_F_READY;
756 printf("ar%d: ERROR - array broken\n", rdp->lun);
761 case AR_F_RAID0 | AR_F_RAID1:
762 if (disk < rdp->width) {
763 if (!(rdp->disks[disk].flags & AR_DF_ONLINE) &&
764 !(rdp->disks[disk + rdp->width].flags & AR_DF_ONLINE)) {
765 rdp->flags &= ~AR_F_READY;
766 printf("ar%d: ERROR - array broken\n", rdp->lun);
768 else if (((rdp->disks[disk].flags & AR_DF_ONLINE) &&
770 [disk + rdp->width].flags & AR_DF_ONLINE))||
771 (!(rdp->disks[disk].flags & AR_DF_ONLINE) &&
773 [disk + rdp->width].flags & AR_DF_ONLINE))) {
774 rdp->flags |= AR_F_DEGRADED;
775 if (!(flags & AR_F_DEGRADED))
776 printf("ar%d: WARNING - mirror lost\n", rdp->lun);
781 if ((rdp->disks[disk].flags&AR_DF_PRESENT) && rdp->disks[disk].device) {
782 if (rdp->disks[disk].flags & AR_DF_ONLINE)
783 ata_enclosure_leds(rdp->disks[disk].device, ATA_LED_GREEN);
785 ata_enclosure_leds(rdp->disks[disk].device, ATA_LED_RED);
789 if (rdp->flags & AR_F_PROMISE_RAID)
790 ar_promise_write_conf(rdp);
791 if (rdp->flags & AR_F_HIGHPOINT_RAID)
792 ar_highpoint_write_conf(rdp);
797 ar_rebuild(struct ar_softc *rdp)
799 int disk, s, count = 0, error = 0;
802 if ((rdp->flags & (AR_F_READY|AR_F_DEGRADED)) != (AR_F_READY|AR_F_DEGRADED))
805 for (disk = 0; disk < rdp->total_disks; disk++) {
806 if (((rdp->disks[disk].flags&(AR_DF_PRESENT|AR_DF_ONLINE|AR_DF_SPARE))==
807 (AR_DF_PRESENT | AR_DF_SPARE)) && rdp->disks[disk].device) {
808 if (AD_SOFTC(rdp->disks[disk])->total_secs <
809 rdp->disks[disk].disk_sectors) {
810 ata_prtdev(rdp->disks[disk].device,
811 "disk capacity too small for this RAID config\n");
813 rdp->disks[disk].flags &= ~AR_DF_SPARE;
814 AD_SOFTC(rdp->disks[disk])->flags &= ~AD_F_RAID_SUBDISK;
818 ata_enclosure_leds(rdp->disks[disk].device, ATA_LED_ORANGE);
825 /* setup start conditions */
828 rdp->lock_end = rdp->lock_start + 256;
829 rdp->flags |= AR_F_REBUILDING;
831 buffer = malloc(256 * DEV_BSIZE, M_AR, M_NOWAIT | M_ZERO);
833 /* now go copy entire disk(s) */
834 while (rdp->lock_end < (rdp->total_sectors / rdp->width)) {
835 int size = min(256, (rdp->total_sectors / rdp->width) - rdp->lock_end);
837 for (disk = 0; disk < rdp->width; disk++) {
838 struct ad_softc *adp;
840 if (((rdp->disks[disk].flags & AR_DF_ONLINE) &&
841 (rdp->disks[disk + rdp->width].flags & AR_DF_ONLINE)) ||
842 ((rdp->disks[disk].flags & AR_DF_ONLINE) &&
843 !(rdp->disks[disk + rdp->width].flags & AR_DF_SPARE)) ||
844 ((rdp->disks[disk + rdp->width].flags & AR_DF_ONLINE) &&
845 !(rdp->disks[disk].flags & AR_DF_SPARE)))
848 if (rdp->disks[disk].flags & AR_DF_ONLINE)
849 adp = AD_SOFTC(rdp->disks[disk]);
851 adp = AD_SOFTC(rdp->disks[disk + rdp->width]);
852 if ((error = ar_rw(adp, rdp->lock_start,
853 size * DEV_BSIZE, buffer, AR_READ | AR_WAIT)))
856 if (rdp->disks[disk].flags & AR_DF_ONLINE)
857 adp = AD_SOFTC(rdp->disks[disk + rdp->width]);
859 adp = AD_SOFTC(rdp->disks[disk]);
860 if ((error = ar_rw(adp, rdp->lock_start,
861 size * DEV_BSIZE, buffer, AR_WRITE | AR_WAIT)))
870 rdp->lock_start = rdp->lock_end;
871 rdp->lock_end = rdp->lock_start + size;
876 for (disk = 0; disk < rdp->total_disks; disk++) {
877 if ((rdp->disks[disk].flags&(AR_DF_PRESENT|AR_DF_ONLINE|AR_DF_SPARE))==
878 (AR_DF_PRESENT | AR_DF_SPARE)) {
879 rdp->disks[disk].flags &= ~AR_DF_SPARE;
880 rdp->disks[disk].flags |= (AR_DF_ASSIGNED | AR_DF_ONLINE);
884 rdp->lock_start = 0xffffffff;
885 rdp->lock_end = 0xffffffff;
886 rdp->flags &= ~AR_F_REBUILDING;
888 ar_config_changed(rdp, 1);
893 ar_highpoint_read_conf(struct ad_softc *adp, struct ar_softc **raidp)
895 struct highpoint_raid_conf *info;
896 struct ar_softc *raid = NULL;
897 int array, disk_number = 0, retval = 0;
899 if (!(info = (struct highpoint_raid_conf *)
900 malloc(sizeof(struct highpoint_raid_conf), M_AR, M_NOWAIT | M_ZERO)))
903 if (ar_rw(adp, HPT_LBA, sizeof(struct highpoint_raid_conf),
904 (caddr_t)info, AR_READ | AR_WAIT)) {
906 printf("ar: HighPoint read conf failed\n");
910 /* check if this is a HighPoint RAID struct */
911 if (info->magic != HPT_MAGIC_OK && info->magic != HPT_MAGIC_BAD) {
913 printf("ar: HighPoint check1 failed\n");
917 /* is this disk defined, or an old leftover/spare ? */
918 if (!info->magic_0) {
920 printf("ar: HighPoint check2 failed\n");
924 /* now convert HighPoint config info into our generic form */
925 for (array = 0; array < MAX_ARRAYS; array++) {
928 (struct ar_softc*)malloc(sizeof(struct ar_softc), M_AR,
931 printf("ar%d: failed to allocate raid config storage\n", array);
936 if (raid->flags & AR_F_PROMISE_RAID)
939 switch (info->type) {
941 if ((info->order & (HPT_O_RAID0|HPT_O_OK))==(HPT_O_RAID0|HPT_O_OK))
942 goto highpoint_raid1;
943 if (info->order & (HPT_O_RAID0 | HPT_O_RAID1))
944 goto highpoint_raid01;
945 if (raid->magic_0 && raid->magic_0 != info->magic_0)
947 raid->magic_0 = info->magic_0;
948 raid->flags |= AR_F_RAID0;
949 raid->interleave = 1 << info->stripe_shift;
950 disk_number = info->disk_number;
951 if (!(info->order & HPT_O_OK))
952 info->magic = 0; /* mark bad */
957 if (raid->magic_0 && raid->magic_0 != info->magic_0)
959 raid->magic_0 = info->magic_0;
960 raid->flags |= AR_F_RAID1;
961 disk_number = (info->disk_number > 0);
964 case HPT_T_RAID01_RAID0:
966 if (info->order & HPT_O_RAID0) {
967 if ((raid->magic_0 && raid->magic_0 != info->magic_0) ||
968 (raid->magic_1 && raid->magic_1 != info->magic_1))
970 raid->magic_0 = info->magic_0;
971 raid->magic_1 = info->magic_1;
972 raid->flags |= (AR_F_RAID0 | AR_F_RAID1);
973 raid->interleave = 1 << info->stripe_shift;
974 disk_number = info->disk_number;
977 if (raid->magic_1 && raid->magic_1 != info->magic_1)
979 raid->magic_1 = info->magic_1;
980 raid->flags |= (AR_F_RAID0 | AR_F_RAID1);
981 raid->interleave = 1 << info->stripe_shift;
982 disk_number = info->disk_number + info->array_width;
983 if (!(info->order & HPT_O_RAID1))
984 info->magic = 0; /* mark bad */
989 if (raid->magic_0 && raid->magic_0 != info->magic_0)
991 raid->magic_0 = info->magic_0;
992 raid->flags |= AR_F_SPAN;
993 disk_number = info->disk_number;
997 printf("ar%d: HighPoint unknown RAID type 0x%02x\n",
1002 raid->flags |= AR_F_HIGHPOINT_RAID;
1003 raid->disks[disk_number].device = adp->device;
1004 raid->disks[disk_number].flags = (AR_DF_PRESENT | AR_DF_ASSIGNED);
1006 if (info->magic == HPT_MAGIC_OK) {
1007 raid->disks[disk_number].flags |= AR_DF_ONLINE;
1008 raid->flags |= AR_F_READY;
1009 raid->width = info->array_width;
1012 raid->cylinders = info->total_sectors / (63 * 255);
1013 raid->total_sectors = info->total_sectors;
1014 raid->offset = HPT_LBA + 1;
1015 raid->reserved = HPT_LBA + 1;
1016 raid->lock_start = raid->lock_end = info->rebuild_lba;
1017 raid->disks[disk_number].disk_sectors =
1018 info->total_sectors / info->array_width;
1021 raid->disks[disk_number].flags &= ~ AR_DF_ONLINE;
1023 if ((raid->flags & AR_F_RAID0) && (raid->total_disks < raid->width))
1024 raid->total_disks = raid->width;
1025 if (disk_number >= raid->total_disks)
1026 raid->total_disks = disk_number + 1;
1036 ar_highpoint_write_conf(struct ar_softc *rdp)
1038 struct highpoint_raid_conf *config;
1039 struct timeval timestamp;
1042 microtime(×tamp);
1043 rdp->magic_0 = timestamp.tv_sec + 2;
1044 rdp->magic_1 = timestamp.tv_sec;
1046 for (disk = 0; disk < rdp->total_disks; disk++) {
1047 if (!(config = (struct highpoint_raid_conf *)
1048 malloc(sizeof(struct highpoint_raid_conf),
1049 M_AR, M_NOWAIT | M_ZERO))) {
1050 printf("ar%d: Highpoint write conf failed\n", rdp->lun);
1053 if ((rdp->disks[disk].flags & (AR_DF_PRESENT | AR_DF_ONLINE)) ==
1054 (AR_DF_PRESENT | AR_DF_ONLINE))
1055 config->magic = HPT_MAGIC_OK;
1056 if (rdp->disks[disk].flags & AR_DF_ASSIGNED) {
1057 config->magic_0 = rdp->magic_0;
1058 strcpy(config->name_1, "FreeBSD");
1060 config->disk_number = disk;
1062 switch (rdp->flags & (AR_F_RAID0 | AR_F_RAID1 | AR_F_SPAN)) {
1064 config->type = HPT_T_RAID0;
1065 strcpy(config->name_2, "RAID 0");
1066 if (rdp->disks[disk].flags & AR_DF_ONLINE)
1067 config->order = HPT_O_OK;
1071 config->type = HPT_T_RAID0; /* bogus but old HPT BIOS need it */
1072 strcpy(config->name_2, "RAID 1");
1073 config->disk_number = (disk < rdp->width) ? disk : disk + 5;
1074 config->order = HPT_O_RAID0 | HPT_O_OK;
1077 case AR_F_RAID0 | AR_F_RAID1:
1078 config->type = HPT_T_RAID01_RAID0;
1079 strcpy(config->name_2, "RAID 0+1");
1080 if (rdp->disks[disk].flags & AR_DF_ONLINE) {
1081 if (disk < rdp->width) {
1082 config->order = (HPT_O_RAID0 | HPT_O_RAID1);
1083 config->magic_0 = rdp->magic_0 - 1;
1086 config->order = HPT_O_RAID1;
1087 config->disk_number -= rdp->width;
1091 config->magic_0 = rdp->magic_0 - 1;
1092 config->magic_1 = rdp->magic_1;
1096 config->type = HPT_T_SPAN;
1097 strcpy(config->name_2, "SPAN");
1101 config->array_width = rdp->width;
1102 config->stripe_shift = (rdp->width > 1) ? (ffs(rdp->interleave)-1) : 0;
1103 config->total_sectors = rdp->total_sectors;
1104 config->rebuild_lba = rdp->lock_start;
1106 if ((rdp->disks[disk].device && rdp->disks[disk].device->driver) &&
1107 !(rdp->disks[disk].device->flags & ATA_D_DETACHING)) {
1109 if (ar_rw(AD_SOFTC(rdp->disks[disk]), HPT_LBA,
1110 sizeof(struct highpoint_raid_conf),
1111 (caddr_t)config, AR_WRITE)) {
1112 printf("ar%d: Highpoint write conf failed\n", rdp->lun);
1121 ar_promise_read_conf(struct ad_softc *adp, struct ar_softc **raidp, int local)
1123 struct promise_raid_conf *info;
1124 struct ar_softc *raid;
1125 u_int32_t magic, cksum, *ckptr;
1126 int array, count, disk, disksum = 0, retval = 0;
1128 if (!(info = (struct promise_raid_conf *)
1129 malloc(sizeof(struct promise_raid_conf), M_AR, M_NOWAIT | M_ZERO)))
1132 if (ar_rw(adp, PR_LBA(adp), sizeof(struct promise_raid_conf),
1133 (caddr_t)info, AR_READ | AR_WAIT)) {
1135 printf("ar: %s read conf failed\n", local ? "FreeBSD" : "Promise");
1139 /* check if this is a Promise RAID struct (or our local one) */
1141 if (strncmp(info->promise_id, ATA_MAGIC, sizeof(ATA_MAGIC))) {
1143 printf("ar: FreeBSD check1 failed\n");
1148 if (strncmp(info->promise_id, PR_MAGIC, sizeof(PR_MAGIC))) {
1150 printf("ar: Promise check1 failed\n");
1155 /* check if the checksum is OK */
1156 for (cksum = 0, ckptr = (int32_t *)info, count = 0; count < 511; count++)
1158 if (cksum != *ckptr) {
1160 printf("ar: %s check2 failed\n", local ? "FreeBSD" : "Promise");
1164 /* now convert Promise config info into our generic form */
1165 if (info->raid.integrity != PR_I_VALID) {
1167 printf("ar: %s check3 failed\n", local ? "FreeBSD" : "Promise");
1171 for (array = 0; array < MAX_ARRAYS; array++) {
1172 if (!raidp[array]) {
1174 (struct ar_softc*)malloc(sizeof(struct ar_softc), M_AR,
1176 if (!raidp[array]) {
1177 printf("ar%d: failed to allocate raid config storage\n", array);
1181 raid = raidp[array];
1182 if (raid->flags & AR_F_HIGHPOINT_RAID)
1185 magic = (adp->device->channel->chiptype >> 16) |
1186 (info->raid.array_number << 16);
1188 if ((raid->flags & AR_F_PROMISE_RAID) && magic != raid->magic_0)
1191 /* update our knowledge about the array config based on generation */
1192 if (!info->raid.generation || info->raid.generation > raid->generation){
1193 raid->generation = info->raid.generation;
1194 raid->flags = AR_F_PROMISE_RAID;
1196 raid->flags |= AR_F_FREEBSD_RAID;
1197 raid->magic_0 = magic;
1199 if ((info->raid.status &
1200 (PR_S_VALID | PR_S_ONLINE | PR_S_INITED | PR_S_READY)) ==
1201 (PR_S_VALID | PR_S_ONLINE | PR_S_INITED | PR_S_READY)) {
1202 raid->flags |= AR_F_READY;
1203 if (info->raid.status & PR_S_DEGRADED)
1204 raid->flags |= AR_F_DEGRADED;
1207 raid->flags &= ~AR_F_READY;
1209 switch (info->raid.type) {
1211 raid->flags |= AR_F_RAID0;
1215 raid->flags |= AR_F_RAID1;
1216 if (info->raid.array_width > 1)
1217 raid->flags |= AR_F_RAID0;
1221 raid->flags |= AR_F_SPAN;
1225 printf("ar%d: %s unknown RAID type 0x%02x\n",
1226 array, local ? "FreeBSD" : "Promise", info->raid.type);
1229 raid->interleave = 1 << info->raid.stripe_shift;
1230 raid->width = info->raid.array_width;
1231 raid->total_disks = info->raid.total_disks;
1232 raid->heads = info->raid.heads + 1;
1233 raid->sectors = info->raid.sectors;
1234 raid->cylinders = info->raid.cylinders + 1;
1235 raid->total_sectors = info->raid.total_sectors;
1237 raid->reserved = 63;
1238 raid->lock_start = raid->lock_end = info->raid.rebuild_lba;
1240 /* convert disk flags to our internal types */
1241 for (disk = 0; disk < info->raid.total_disks; disk++) {
1242 raid->disks[disk].flags = 0;
1243 disksum += info->raid.disk[disk].flags;
1244 if (info->raid.disk[disk].flags & PR_F_ONLINE)
1245 raid->disks[disk].flags |= AR_DF_ONLINE;
1246 if (info->raid.disk[disk].flags & PR_F_ASSIGNED)
1247 raid->disks[disk].flags |= AR_DF_ASSIGNED;
1248 if (info->raid.disk[disk].flags & PR_F_SPARE) {
1249 raid->disks[disk].flags &= ~AR_DF_ONLINE;
1250 raid->disks[disk].flags |= AR_DF_SPARE;
1252 if (info->raid.disk[disk].flags & (PR_F_REDIR | PR_F_DOWN))
1253 raid->disks[disk].flags &= ~AR_DF_ONLINE;
1256 free(raidp[array], M_AR);
1257 raidp[array] = NULL;
1261 if (raid->disks[info->raid.disk_number].flags && adp->device) {
1262 raid->disks[info->raid.disk_number].device = adp->device;
1263 raid->disks[info->raid.disk_number].flags |= AR_DF_PRESENT;
1264 raid->disks[info->raid.disk_number].disk_sectors =
1265 info->raid.total_sectors / info->raid.array_width;
1266 /*info->raid.disk_sectors;*/
1277 ar_promise_write_conf(struct ar_softc *rdp)
1279 struct promise_raid_conf *config;
1280 struct timeval timestamp;
1282 int count, disk, drive;
1283 int local = rdp->flags & AR_F_FREEBSD_RAID;
1286 microtime(×tamp);
1288 for (disk = 0; disk < rdp->total_disks; disk++) {
1289 if (!(config = (struct promise_raid_conf *)
1290 malloc(sizeof(struct promise_raid_conf), M_AR, M_NOWAIT))) {
1291 printf("ar%d: %s write conf failed\n",
1292 rdp->lun, local ? "FreeBSD" : "Promise");
1295 for (count = 0; count < sizeof(struct promise_raid_conf); count++)
1296 *(((u_int8_t *)config) + count) = 255 - (count % 256);
1299 bcopy(ATA_MAGIC, config->promise_id, sizeof(ATA_MAGIC));
1301 bcopy(PR_MAGIC, config->promise_id, sizeof(PR_MAGIC));
1302 config->dummy_0 = 0x00020000;
1303 config->magic_0 = PR_MAGIC0(rdp->disks[disk]) | timestamp.tv_sec;
1304 config->magic_1 = timestamp.tv_sec >> 16;
1305 config->magic_2 = timestamp.tv_sec;
1306 config->raid.integrity = PR_I_VALID;
1308 config->raid.disk_number = disk;
1309 if ((rdp->disks[disk].flags&AR_DF_PRESENT) && rdp->disks[disk].device) {
1310 config->raid.channel = rdp->disks[disk].device->channel->unit;
1311 config->raid.device = (rdp->disks[disk].device->unit != 0);
1312 if (AD_SOFTC(rdp->disks[disk])->dev->si_disk)
1313 config->raid.disk_sectors = PR_LBA(AD_SOFTC(rdp->disks[disk]));
1314 /*config->raid.disk_offset*/
1316 config->raid.magic_0 = config->magic_0;
1317 config->raid.rebuild_lba = rdp->lock_start;
1318 config->raid.generation = rdp->generation;
1320 if (rdp->flags & AR_F_READY) {
1321 config->raid.flags = (PR_F_VALID | PR_F_ASSIGNED | PR_F_ONLINE);
1322 config->raid.status =
1323 (PR_S_VALID | PR_S_ONLINE | PR_S_INITED | PR_S_READY);
1324 if (rdp->flags & AR_F_DEGRADED)
1325 config->raid.status |= PR_S_DEGRADED;
1327 config->raid.status |= PR_S_FUNCTIONAL;
1330 config->raid.status = 0;
1331 config->raid.flags = PR_F_DOWN;
1334 switch (rdp->flags & (AR_F_RAID0 | AR_F_RAID1 | AR_F_SPAN)) {
1336 config->raid.type = PR_T_RAID0;
1339 config->raid.type = PR_T_RAID1;
1341 case AR_F_RAID0 | AR_F_RAID1:
1342 config->raid.type = PR_T_RAID1;
1345 config->raid.type = PR_T_SPAN;
1349 config->raid.total_disks = rdp->total_disks;
1350 config->raid.stripe_shift = ffs(rdp->interleave) - 1;
1351 config->raid.array_width = rdp->width;
1352 config->raid.array_number = rdp->lun;
1353 config->raid.total_sectors = rdp->total_sectors;
1354 config->raid.cylinders = rdp->cylinders - 1;
1355 config->raid.heads = rdp->heads - 1;
1356 config->raid.sectors = rdp->sectors;
1357 config->raid.magic_1 = (u_int64_t)config->magic_2<<16 | config->magic_1;
1359 bzero(&config->raid.disk, 8 * 12);
1360 for (drive = 0; drive < rdp->total_disks; drive++) {
1361 config->raid.disk[drive].flags = 0;
1362 if (rdp->disks[drive].flags & AR_DF_PRESENT)
1363 config->raid.disk[drive].flags |= PR_F_VALID;
1364 if (rdp->disks[drive].flags & AR_DF_ASSIGNED)
1365 config->raid.disk[drive].flags |= PR_F_ASSIGNED;
1366 if (rdp->disks[drive].flags & AR_DF_ONLINE)
1367 config->raid.disk[drive].flags |= PR_F_ONLINE;
1369 if (rdp->disks[drive].flags & AR_DF_PRESENT)
1370 config->raid.disk[drive].flags = (PR_F_REDIR | PR_F_DOWN);
1371 if (rdp->disks[drive].flags & AR_DF_SPARE)
1372 config->raid.disk[drive].flags |= PR_F_SPARE;
1373 config->raid.disk[drive].dummy_0 = 0x0;
1374 if (rdp->disks[drive].device) {
1375 config->raid.disk[drive].channel =
1376 rdp->disks[drive].device->channel->unit;
1377 config->raid.disk[drive].device =
1378 (rdp->disks[drive].device->unit != 0);
1380 config->raid.disk[drive].magic_0 =
1381 PR_MAGIC0(rdp->disks[drive]) | timestamp.tv_sec;
1384 config->checksum = 0;
1385 for (ckptr = (int32_t *)config, count = 0; count < 511; count++)
1386 config->checksum += *ckptr++;
1387 if (rdp->disks[disk].device && rdp->disks[disk].device->driver &&
1388 !(rdp->disks[disk].device->flags & ATA_D_DETACHING)) {
1389 if (ar_rw(AD_SOFTC(rdp->disks[disk]),
1390 PR_LBA(AD_SOFTC(rdp->disks[disk])),
1391 sizeof(struct promise_raid_conf),
1392 (caddr_t)config, AR_WRITE)) {
1393 printf("ar%d: %s write conf failed\n",
1394 rdp->lun, local ? "FreeBSD" : "Promise");
1403 ar_rw_done(struct buf *bp)
1405 free(bp->b_data, M_AR);
1410 ar_rw(struct ad_softc *adp, u_int32_t lba, int count, caddr_t data, int flags)
1413 int retry = 0, error = 0;
1415 if (!(bp = (struct buf *)malloc(sizeof(struct buf), M_AR, M_NOWAIT|M_ZERO)))
1418 BUF_LOCK(bp, LK_EXCLUSIVE);
1419 bp->b_dev = adp->dev;
1422 bp->b_bcount = count;
1423 if (flags & AR_WAIT)
1424 bp->b_iodone = (void *)wakeup;
1426 bp->b_iodone = ar_rw_done;
1427 bp->b_flags = B_CALL;
1428 if (flags & AR_READ)
1429 bp->b_flags |= B_READ;
1430 if (flags & AR_WRITE)
1431 bp->b_flags |= B_WRITE;
1433 AR_STRATEGY((struct buf *)bp);
1435 if (flags & AR_WAIT) {
1436 while ((retry++ < (15*hz/10)) && (error = !(bp->b_flags & B_DONE)))
1437 error = tsleep(bp, 0, "arrw", 10);
1438 if (!error && (bp->b_flags & B_ERROR))
1439 error = bp->b_error;
1445 static struct ata_device *
1446 ar_locate_disk(int diskno)
1448 struct ata_channel *ch;
1451 for (ctlr = 0; ctlr < devclass_get_maxunit(ata_devclass); ctlr++) {
1452 if (!(ch = devclass_get_softc(ata_devclass, ctlr)))
1454 if (ch->devices & ATA_ATA_MASTER)
1455 if (ch->device[MASTER].driver &&
1456 ((struct ad_softc *)(ch->device[MASTER].driver))->lun == diskno)
1457 return &ch->device[MASTER];
1458 if (ch->devices & ATA_ATA_SLAVE)
1459 if (ch->device[SLAVE].driver &&
1460 ((struct ad_softc *)(ch->device[SLAVE].driver))->lun == diskno)
1461 return &ch->device[SLAVE];