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freebsd-dev/sys/dev/ata/ata-raid.c
Poul-Henning Kamp 0b7ed341e1 Change the disk(9) API in order to make device removal more robust. 
Previously the "struct disk" were owned by the device driver and this
gave us problems when the device disappared and the users of that device
were not immediately disappearing.

Now the struct disk is allocate with a new call, disk_alloc() and owned
by geom_disk and just abandonned by the device driver when disk_create()
is called.

Unfortunately, this results in a ton of "s/\./->/" changes to device
drivers.

Since I'm doing the sweep anyway, a couple of other API improvements
have been carried out at the same time:

The Giant awareness flag has been flipped from DISKFLAG_NOGIANT to
DISKFLAG_NEEDSGIANT

A version number have been added to disk_create() so that we can detect,
report and ignore binary drivers with old ABI in the future.

Manual page update to follow shortly.
2004-02-18 21:36:53 +00:00

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/*-
* Copyright (c) 2000 - 2004 Søren Schmidt <sos@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer,
* without modification, immediately at the beginning of the file.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_ata.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/ata.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/malloc.h>
#include <sys/bio.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/disk.h>
#include <sys/cons.h>
#include <sys/unistd.h>
#include <sys/kthread.h>
#include <sys/sema.h>
#include <sys/taskqueue.h>
#include <vm/uma.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <geom/geom_disk.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/ata/ata-all.h>
#include <dev/ata/ata-pci.h>
#include <dev/ata/ata-disk.h>
#include <dev/ata/ata-raid.h>
/* device structures */
static disk_strategy_t arstrategy;
static dumper_t ardump;
/* prototypes */
static void ar_attach_raid(struct ar_softc *, int);
static void ar_done(struct bio *);
static void ar_config_changed(struct ar_softc *, int);
static void ar_rebuild(void *);
static int ar_highpoint_read_conf(struct ad_softc *, struct ar_softc **);
static int ar_highpoint_write_conf(struct ar_softc *);
static int ar_promise_read_conf(struct ad_softc *, struct ar_softc **, int);
static int ar_promise_write_conf(struct ar_softc *);
static int ar_rw(struct ad_softc *, u_int32_t, int, caddr_t, int);
static struct ata_device *ar_locate_disk(int);
static void ar_print_conf(struct ar_softc *);
/* internal vars */
static struct ar_softc **ar_table = NULL;
static MALLOC_DEFINE(M_AR, "AR driver", "ATA RAID driver");
#define AR_REBUILD_SIZE 128
int
ata_raiddisk_attach(struct ad_softc *adp)
{
struct ar_softc *rdp;
int array, disk;
if (ar_table) {
for (array = 0; array < MAX_ARRAYS; array++) {
if (!(rdp = ar_table[array]) || !rdp->flags)
continue;
for (disk = 0; disk < rdp->total_disks; disk++) {
if ((rdp->disks[disk].flags & AR_DF_ASSIGNED) &&
rdp->disks[disk].device == adp->device) {
ata_prtdev(rdp->disks[disk].device,
"inserted into ar%d disk%d as spare\n",
array, disk);
rdp->disks[disk].flags |= (AR_DF_PRESENT | AR_DF_SPARE);
AD_SOFTC(rdp->disks[disk])->flags |= AD_F_RAID_SUBDISK;
ar_config_changed(rdp, 1);
return 1;
}
}
}
}
if (!ar_table)
ar_table = malloc(sizeof(struct ar_soft *) * MAX_ARRAYS,
M_AR, M_NOWAIT | M_ZERO);
if (!ar_table) {
ata_prtdev(adp->device, "no memory for ATA raid array\n");
return 0;
}
switch(pci_get_vendor(device_get_parent(adp->device->channel->dev))) {
case ATA_PROMISE_ID:
/* test RAID bit in PCI reg XXX */
return (ar_promise_read_conf(adp, ar_table, 0));
case ATA_HIGHPOINT_ID:
return (ar_highpoint_read_conf(adp, ar_table));
default:
return (ar_promise_read_conf(adp, ar_table, 1));
}
return 0;
}
int
ata_raiddisk_detach(struct ad_softc *adp)
{
struct ar_softc *rdp;
int array, disk;
if (ar_table) {
for (array = 0; array < MAX_ARRAYS; array++) {
if (!(rdp = ar_table[array]) || !rdp->flags)
continue;
for (disk = 0; disk < rdp->total_disks; disk++) {
if (rdp->disks[disk].device == adp->device) {
ata_prtdev(rdp->disks[disk].device,
"deleted from ar%d disk%d\n", array, disk);
rdp->disks[disk].flags &= ~(AR_DF_PRESENT | AR_DF_ONLINE);
AD_SOFTC(rdp->disks[disk])->flags &= ~AD_F_RAID_SUBDISK;
rdp->disks[disk].device = NULL;
ar_config_changed(rdp, 1);
return 1;
}
}
}
}
return 0;
}
void
ata_raid_attach()
{
struct ar_softc *rdp;
int array;
if (!ar_table)
return;
for (array = 0; array < MAX_ARRAYS; array++) {
if (!(rdp = ar_table[array]) || !rdp->flags)
continue;
if (bootverbose)
ar_print_conf(rdp);
ar_attach_raid(rdp, 0);
}
}
static void
ar_attach_raid(struct ar_softc *rdp, int update)
{
int disk;
ar_config_changed(rdp, update);
rdp->disk = disk_alloc();
rdp->disk->d_strategy = arstrategy;
rdp->disk->d_dump = ardump;
rdp->disk->d_name = "ar";
rdp->disk->d_sectorsize = DEV_BSIZE;
rdp->disk->d_mediasize = (off_t)rdp->total_sectors * DEV_BSIZE;
rdp->disk->d_fwsectors = rdp->sectors;
rdp->disk->d_fwheads = rdp->heads;
rdp->disk->d_maxsize = 128 * DEV_BSIZE;
rdp->disk->d_drv1 = rdp;
rdp->disk->d_unit = rdp->lun;
rdp->disk->d_flags = DISKFLAG_NEEDSGIANT;
disk_create(rdp->disk, DISK_VERSION);
printf("ar%d: %lluMB <ATA ", rdp->lun, (unsigned long long)
(rdp->total_sectors / ((1024L * 1024L) / DEV_BSIZE)));
switch (rdp->flags & (AR_F_RAID0 | AR_F_RAID1 | AR_F_SPAN)) {
case AR_F_RAID0:
printf("RAID0 "); break;
case AR_F_RAID1:
printf("RAID1 "); break;
case AR_F_SPAN:
printf("SPAN "); break;
case (AR_F_RAID0 | AR_F_RAID1):
printf("RAID0+1 "); break;
default:
printf("unknown 0x%x> ", rdp->flags);
return;
}
printf("array> [%d/%d/%d] status: ",
rdp->cylinders, rdp->heads, rdp->sectors);
switch (rdp->flags & (AR_F_DEGRADED | AR_F_READY)) {
case AR_F_READY:
printf("READY");
break;
case (AR_F_DEGRADED | AR_F_READY):
printf("DEGRADED");
break;
default:
printf("BROKEN");
break;
}
printf(" subdisks:\n");
for (disk = 0; disk < rdp->total_disks; disk++) {
if (rdp->disks[disk].device &&
AD_SOFTC(rdp->disks[disk])->flags & AD_F_RAID_SUBDISK) {
if (rdp->disks[disk].flags & AR_DF_PRESENT) {
if (rdp->disks[disk].flags & AR_DF_ONLINE)
printf(" disk%d READY ", disk);
else if (rdp->disks[disk].flags & AR_DF_SPARE)
printf(" disk%d SPARE ", disk);
else
printf(" disk%d FREE ", disk);
printf("on %s at ata%d-%s\n", rdp->disks[disk].device->name,
device_get_unit(rdp->disks[disk].device->channel->dev),
(rdp->disks[disk].device->unit == ATA_MASTER) ?
"master" : "slave");
}
else if (rdp->disks[disk].flags & AR_DF_ASSIGNED)
printf(" disk%d DOWN\n", disk);
else
printf(" disk%d INVALID no RAID config on this disk\n", disk);
}
else
printf(" disk%d DOWN no device found for this disk\n", disk);
}
}
int
ata_raid_addspare(int array, int disk)
{
struct ar_softc *rdp;
struct ata_device *atadev;
int i;
if (!ar_table || !(rdp = ar_table[array]))
return ENXIO;
if (!(rdp->flags & AR_F_RAID1))
return EPERM;
if (rdp->flags & AR_F_REBUILDING)
return EBUSY;
if (!(rdp->flags & AR_F_DEGRADED) || !(rdp->flags & AR_F_READY))
return ENXIO;
for (i = 0; i < rdp->total_disks; i++ ) {
if (((rdp->disks[i].flags & (AR_DF_PRESENT | AR_DF_ONLINE)) ==
(AR_DF_PRESENT | AR_DF_ONLINE)) && rdp->disks[i].device)
continue;
if ((atadev = ar_locate_disk(disk))) {
if (((struct ad_softc*)(atadev->softc))->flags & AD_F_RAID_SUBDISK)
return EBUSY;
rdp->disks[i].device = atadev;
rdp->disks[i].flags |= (AR_DF_PRESENT|AR_DF_ASSIGNED|AR_DF_SPARE);
AD_SOFTC(rdp->disks[i])->flags |= AD_F_RAID_SUBDISK;
ata_prtdev(rdp->disks[i].device,
"inserted into ar%d disk%d as spare\n", array, i);
ar_config_changed(rdp, 1);
return 0;
}
}
return ENXIO;
}
int
ata_raid_create(struct raid_setup *setup)
{
struct ata_device *atadev;
struct ar_softc *rdp;
int array, disk;
int ctlr = 0, disk_size = 0, total_disks = 0;
if (!ar_table)
ar_table = malloc(sizeof(struct ar_soft *) * MAX_ARRAYS,
M_AR, M_NOWAIT | M_ZERO);
if (!ar_table) {
printf("ar: no memory for ATA raid array\n");
return 0;
}
for (array = 0; array < MAX_ARRAYS; array++) {
if (!ar_table[array])
break;
}
if (array >= MAX_ARRAYS)
return ENOSPC;
if (!(rdp = (struct ar_softc*)malloc(sizeof(struct ar_softc), M_AR,
M_NOWAIT | M_ZERO))) {
printf("ar%d: failed to allocate raid config storage\n", array);
return ENOMEM;
}
for (disk = 0; disk < setup->total_disks; disk++) {
if ((atadev = ar_locate_disk(setup->disks[disk]))) {
rdp->disks[disk].device = atadev;
if (AD_SOFTC(rdp->disks[disk])->flags & AD_F_RAID_SUBDISK) {
setup->disks[disk] = -1;
free(rdp, M_AR);
return EBUSY;
}
switch(pci_get_vendor(device_get_parent(
rdp->disks[disk].device->channel->dev))) {
case ATA_HIGHPOINT_ID:
ctlr |= AR_F_HIGHPOINT_RAID;
rdp->disks[disk].disk_sectors =
AD_SOFTC(rdp->disks[disk])->total_secs;
break;
default:
ctlr |= AR_F_FREEBSD_RAID;
/* FALLTHROUGH */
case ATA_PROMISE_ID:
ctlr |= AR_F_PROMISE_RAID;
rdp->disks[disk].disk_sectors =
PR_LBA(AD_SOFTC(rdp->disks[disk]));
break;
}
if (rdp->flags & (AR_F_PROMISE_RAID|AR_F_HIGHPOINT_RAID) &&
(rdp->flags & (AR_F_PROMISE_RAID|AR_F_HIGHPOINT_RAID)) !=
(ctlr & (AR_F_PROMISE_RAID|AR_F_HIGHPOINT_RAID))) {
free(rdp, M_AR);
return EXDEV;
}
else
rdp->flags |= ctlr;
if (disk_size)
disk_size = min(rdp->disks[disk].disk_sectors, disk_size);
else
disk_size = rdp->disks[disk].disk_sectors;
rdp->disks[disk].flags =
(AR_DF_PRESENT | AR_DF_ASSIGNED | AR_DF_ONLINE);
total_disks++;
}
else {
setup->disks[disk] = -1;
free(rdp, M_AR);
return ENXIO;
}
}
if (!total_disks) {
free(rdp, M_AR);
return ENODEV;
}
switch (setup->type) {
case 1:
rdp->flags |= AR_F_RAID0;
break;
case 2:
rdp->flags |= AR_F_RAID1;
if (total_disks != 2) {
free(rdp, M_AR);
return EPERM;
}
break;
case 3:
rdp->flags |= (AR_F_RAID0 | AR_F_RAID1);
if (total_disks % 2 != 0) {
free(rdp, M_AR);
return EPERM;
}
break;
case 4:
rdp->flags |= AR_F_SPAN;
break;
}
for (disk = 0; disk < total_disks; disk++)
AD_SOFTC(rdp->disks[disk])->flags |= AD_F_RAID_SUBDISK;
rdp->lun = array;
if (rdp->flags & AR_F_RAID0) {
int bit = 0;
while (setup->interleave >>= 1)
bit++;
if (rdp->flags & AR_F_PROMISE_RAID)
rdp->interleave = min(max(2, 1 << bit), 2048);
if (rdp->flags & AR_F_HIGHPOINT_RAID)
rdp->interleave = min(max(32, 1 << bit), 128);
}
rdp->total_disks = total_disks;
rdp->width = total_disks / ((rdp->flags & AR_F_RAID1) ? 2 : 1);
rdp->total_sectors = disk_size * rdp->width;
rdp->heads = 255;
rdp->sectors = 63;
rdp->cylinders = rdp->total_sectors / (255 * 63);
if (rdp->flags & AR_F_PROMISE_RAID) {
rdp->offset = 0;
rdp->reserved = 63;
}
if (rdp->flags & AR_F_HIGHPOINT_RAID) {
rdp->offset = HPT_LBA + 1;
rdp->reserved = HPT_LBA + 1;
}
rdp->lock_start = rdp->lock_end = 0xffffffff;
rdp->flags |= AR_F_READY;
ar_table[array] = rdp;
#if 0
/* kick off rebuild here */
if (setup->type == 2) {
rdp->disks[1].flags &= ~AR_DF_ONLINE;
rdp->disks[1].flags |= AR_DF_SPARE;
}
#endif
ar_attach_raid(rdp, 1);
ata_raid_rebuild(array);
setup->unit = array;
return 0;
}
int
ata_raid_delete(int array)
{
struct ar_softc *rdp;
int disk;
if (!ar_table) {
printf("ar: no memory for ATA raid array\n");
return 0;
}
if (!(rdp = ar_table[array]))
return ENXIO;
rdp->flags &= ~AR_F_READY;
for (disk = 0; disk < rdp->total_disks; disk++) {
if ((rdp->disks[disk].flags&AR_DF_PRESENT) && rdp->disks[disk].device) {
AD_SOFTC(rdp->disks[disk])->flags &= ~AD_F_RAID_SUBDISK;
/* SOS
ata_enclosure_leds(rdp->disks[disk].device, ATA_LED_GREEN);
XXX */
rdp->disks[disk].flags = 0;
}
}
if (rdp->flags & AR_F_PROMISE_RAID)
ar_promise_write_conf(rdp);
else
ar_highpoint_write_conf(rdp);
disk_destroy(rdp->disk);
free(rdp, M_AR);
ar_table[array] = NULL;
return 0;
}
int
ata_raid_status(int array, struct raid_status *status)
{
struct ar_softc *rdp;
int i;
if (!ar_table || !(rdp = ar_table[array]))
return ENXIO;
switch (rdp->flags & (AR_F_RAID0 | AR_F_RAID1 | AR_F_SPAN)) {
case AR_F_RAID0:
status->type = AR_RAID0;
break;
case AR_F_RAID1:
status->type = AR_RAID1;
break;
case AR_F_RAID0 | AR_F_RAID1:
status->type = AR_RAID0 | AR_RAID1;
break;
case AR_F_SPAN:
status->type = AR_SPAN;
break;
}
status->total_disks = rdp->total_disks;
for (i = 0; i < rdp->total_disks; i++ ) {
if ((rdp->disks[i].flags & AR_DF_PRESENT) && rdp->disks[i].device)
status->disks[i] = AD_SOFTC(rdp->disks[i])->lun;
else
status->disks[i] = -1;
}
status->interleave = rdp->interleave;
status->status = 0;
if (rdp->flags & AR_F_READY)
status->status |= AR_READY;
if (rdp->flags & AR_F_DEGRADED)
status->status |= AR_DEGRADED;
if (rdp->flags & AR_F_REBUILDING) {
status->status |= AR_REBUILDING;
status->progress = 100*rdp->lock_start/(rdp->total_sectors/rdp->width);
}
return 0;
}
int
ata_raid_rebuild(int array)
{
struct ar_softc *rdp;
if (!ar_table || !(rdp = ar_table[array]))
return ENXIO;
if (rdp->flags & AR_F_REBUILDING)
return EBUSY;
return kthread_create(ar_rebuild, rdp, &rdp->pid, RFNOWAIT, 0,
"rebuilding ar%d", array);
}
static int
ardump(void *arg, void *virtual, vm_offset_t physical,
off_t offset, size_t length)
{
struct ar_softc *rdp;
struct disk *dp, *ap;
vm_offset_t pdata;
caddr_t vdata;
int blkno, count, chunk, error1, error2, lba, lbs, tmplba;
int drv = 0;
dp = arg;
rdp = dp->d_drv1;
if (!rdp || !(rdp->flags & AR_F_READY))
return ENXIO;
if (length == 0) {
for (drv = 0; drv < rdp->total_disks; drv++) {
if (rdp->disks[drv].flags & AR_DF_ONLINE) {
ap = AD_SOFTC(rdp->disks[drv])->disk;
(void) ap->d_dump(ap, NULL, 0, 0, 0);
}
}
return 0;
}
blkno = offset / DEV_BSIZE;
vdata = virtual;
pdata = physical;
for (count = howmany(length, DEV_BSIZE); count > 0;
count -= chunk, blkno += chunk, vdata += (chunk * DEV_BSIZE),
pdata += (chunk * DEV_BSIZE)) {
switch (rdp->flags & (AR_F_RAID0 | AR_F_RAID1 | AR_F_SPAN)) {
case AR_F_SPAN:
lba = blkno;
while (lba >= AD_SOFTC(rdp->disks[drv])->total_secs-rdp->reserved)
lba -= AD_SOFTC(rdp->disks[drv++])->total_secs-rdp->reserved;
chunk = min(AD_SOFTC(rdp->disks[drv])->total_secs-rdp->reserved-lba,
count);
break;
case AR_F_RAID0:
case AR_F_RAID0 | AR_F_RAID1:
tmplba = blkno / rdp->interleave;
chunk = blkno % rdp->interleave;
if (blkno >= (rdp->total_sectors / (rdp->interleave * rdp->width)) *
(rdp->interleave * rdp->width) ) {
lbs = (rdp->total_sectors -
((rdp->total_sectors / (rdp->interleave * rdp->width)) *
(rdp->interleave * rdp->width))) / rdp->width;
drv = (blkno -
((rdp->total_sectors / (rdp->interleave * rdp->width)) *
(rdp->interleave * rdp->width))) / lbs;
lba = ((tmplba / rdp->width) * rdp->interleave) +
(blkno - ((tmplba / rdp->width) * rdp->interleave)) % lbs;
chunk = min(count, lbs);
}
else {
drv = tmplba % rdp->width;
lba = ((tmplba / rdp->width) * rdp->interleave) + chunk;
chunk = min(count, rdp->interleave - chunk);
}
break;
case AR_F_RAID1:
drv = 0;
lba = blkno;
chunk = count;
break;
default:
printf("ar%d: unknown array type in ardump\n", rdp->lun);
return EIO;
}
if (drv > 0)
lba += rdp->offset;
switch (rdp->flags & (AR_F_RAID0 | AR_F_RAID1 | AR_F_SPAN)) {
case AR_F_SPAN:
case AR_F_RAID0:
if (rdp->disks[drv].flags & AR_DF_ONLINE) {
ap = AD_SOFTC(rdp->disks[drv])->disk;
error1 = ap->d_dump(ap, vdata, pdata,
(off_t) lba * DEV_BSIZE,
chunk * DEV_BSIZE);
} else
error1 = EIO;
if (error1)
return error1;
break;
case AR_F_RAID1:
case AR_F_RAID0 | AR_F_RAID1:
if ((rdp->disks[drv].flags & AR_DF_ONLINE) ||
((rdp->flags & AR_F_REBUILDING) &&
(rdp->disks[drv].flags & AR_DF_SPARE))) {
ap = AD_SOFTC(rdp->disks[drv])->disk;
error1 = ap->d_dump(ap, vdata, pdata,
(off_t) lba * DEV_BSIZE,
chunk * DEV_BSIZE);
} else
error1 = EIO;
if ((rdp->disks[drv + rdp->width].flags & AR_DF_ONLINE) ||
((rdp->flags & AR_F_REBUILDING) &&
(rdp->disks[drv + rdp->width].flags & AR_DF_SPARE))) {
ap = AD_SOFTC(rdp->disks[drv + rdp->width])->disk;
error2 = ap->d_dump(ap, vdata, pdata,
(off_t) lba * DEV_BSIZE,
chunk * DEV_BSIZE);
} else
error2 = EIO;
if (error1 && error2)
return error1;
break;
default:
printf("ar%d: unknown array type in ardump\n", rdp->lun);
return EIO;
}
}
return 0;
}
static void
arstrategy(struct bio *bp)
{
struct ar_softc *rdp = bp->bio_disk->d_drv1;
int blkno, count, chunk, lba, lbs, tmplba;
int drv = 0, change = 0;
caddr_t data;
if (!(rdp->flags & AR_F_READY)) {
bp->bio_flags |= BIO_ERROR;
bp->bio_error = EIO;
biodone(bp);
return;
}
bp->bio_resid = bp->bio_bcount;
blkno = bp->bio_pblkno;
data = bp->bio_data;
for (count = howmany(bp->bio_bcount, DEV_BSIZE); count > 0;
count -= chunk, blkno += chunk, data += (chunk * DEV_BSIZE)) {
struct ar_buf *buf1, *buf2;
switch (rdp->flags & (AR_F_RAID0 | AR_F_RAID1 | AR_F_SPAN)) {
case AR_F_SPAN:
lba = blkno;
while (lba >= AD_SOFTC(rdp->disks[drv])->total_secs-rdp->reserved)
lba -= AD_SOFTC(rdp->disks[drv++])->total_secs-rdp->reserved;
chunk = min(AD_SOFTC(rdp->disks[drv])->total_secs-rdp->reserved-lba,
count);
break;
case AR_F_RAID0:
case AR_F_RAID0 | AR_F_RAID1:
tmplba = blkno / rdp->interleave;
chunk = blkno % rdp->interleave;
if (blkno >= (rdp->total_sectors / (rdp->interleave * rdp->width)) *
(rdp->interleave * rdp->width) ) {
lbs = (rdp->total_sectors -
((rdp->total_sectors / (rdp->interleave * rdp->width)) *
(rdp->interleave * rdp->width))) / rdp->width;
drv = (blkno -
((rdp->total_sectors / (rdp->interleave * rdp->width)) *
(rdp->interleave * rdp->width))) / lbs;
lba = ((tmplba / rdp->width) * rdp->interleave) +
(blkno - ((tmplba / rdp->width) * rdp->interleave)) % lbs;
chunk = min(count, lbs);
}
else {
drv = tmplba % rdp->width;
lba = ((tmplba / rdp->width) * rdp->interleave) + chunk;
chunk = min(count, rdp->interleave - chunk);
}
break;
case AR_F_RAID1:
drv = 0;
lba = blkno;
chunk = count;
break;
default:
printf("ar%d: unknown array type in arstrategy\n", rdp->lun);
bp->bio_flags |= BIO_ERROR;
bp->bio_error = EIO;
biodone(bp);
return;
}
buf1 = malloc(sizeof(struct ar_buf), M_AR, M_NOWAIT | M_ZERO); /* XXX */
buf1->bp.bio_pblkno = lba;
if ((buf1->drive = drv) > 0)
buf1->bp.bio_pblkno += rdp->offset;
buf1->bp.bio_driver1 = (void *)rdp;
buf1->bp.bio_bcount = chunk * DEV_BSIZE;
buf1->bp.bio_data = data;
buf1->bp.bio_cmd = bp->bio_cmd;
buf1->bp.bio_flags = bp->bio_flags;
buf1->bp.bio_done = ar_done;
buf1->org = bp;
switch (rdp->flags & (AR_F_RAID0 | AR_F_RAID1 | AR_F_SPAN)) {
case AR_F_SPAN:
case AR_F_RAID0:
if ((rdp->disks[buf1->drive].flags &
(AR_DF_PRESENT|AR_DF_ONLINE))==(AR_DF_PRESENT|AR_DF_ONLINE) &&
!rdp->disks[buf1->drive].device->softc) {
rdp->disks[buf1->drive].flags &= ~AR_DF_ONLINE;
ar_config_changed(rdp, 1);
free(buf1, M_AR);
bp->bio_flags |= BIO_ERROR;
bp->bio_error = EIO;
biodone(bp);
return;
}
buf1->bp.bio_disk = AD_SOFTC(rdp->disks[buf1->drive])->disk;
AR_STRATEGY((struct bio *)buf1);
break;
case AR_F_RAID1:
case AR_F_RAID0 | AR_F_RAID1:
if (rdp->flags & AR_F_REBUILDING && bp->bio_cmd == BIO_WRITE) {
if ((bp->bio_pblkno >= rdp->lock_start &&
bp->bio_pblkno < rdp->lock_end) ||
((bp->bio_pblkno + chunk) > rdp->lock_start &&
(bp->bio_pblkno + chunk) <= rdp->lock_end)) {
tsleep(rdp, PRIBIO, "arwait", 0);
}
}
if ((rdp->disks[buf1->drive].flags &
(AR_DF_PRESENT|AR_DF_ONLINE))==(AR_DF_PRESENT|AR_DF_ONLINE) &&
!rdp->disks[buf1->drive].device->softc) {
rdp->disks[buf1->drive].flags &= ~AR_DF_ONLINE;
change = 1;
}
if ((rdp->disks[buf1->drive + rdp->width].flags &
(AR_DF_PRESENT|AR_DF_ONLINE))==(AR_DF_PRESENT|AR_DF_ONLINE) &&
!rdp->disks[buf1->drive + rdp->width].device->softc) {
rdp->disks[buf1->drive + rdp->width].flags &= ~AR_DF_ONLINE;
change = 1;
}
if (change)
ar_config_changed(rdp, 1);
if (!(rdp->flags & AR_F_READY)) {
free(buf1, M_AR);
bp->bio_flags |= BIO_ERROR;
bp->bio_error = EIO;
biodone(bp);
return;
}
if (bp->bio_cmd == BIO_READ) {
int src_online =
(rdp->disks[buf1->drive].flags & AR_DF_ONLINE);
int mir_online =
(rdp->disks[buf1->drive+rdp->width].flags & AR_DF_ONLINE);
/* if mirror gone or close to last access on source */
if (!mir_online ||
((src_online) &&
buf1->bp.bio_pblkno >=
(rdp->disks[buf1->drive].last_lba - AR_PROXIMITY) &&
buf1->bp.bio_pblkno <=
(rdp->disks[buf1->drive].last_lba + AR_PROXIMITY))) {
rdp->flags &= ~AR_F_TOGGLE;
}
/* if source gone or close to last access on mirror */
else if (!src_online ||
((mir_online) &&
buf1->bp.bio_pblkno >=
(rdp->disks[buf1->drive + rdp->width].last_lba -
AR_PROXIMITY) &&
buf1->bp.bio_pblkno <=
(rdp->disks[buf1->drive + rdp->width].last_lba +
AR_PROXIMITY))) {
buf1->drive = buf1->drive + rdp->width;
rdp->flags |= AR_F_TOGGLE;
}
/* not close to any previous access, toggle */
else {
if (rdp->flags & AR_F_TOGGLE)
rdp->flags &= ~AR_F_TOGGLE;
else {
buf1->drive = buf1->drive + rdp->width;
rdp->flags |= AR_F_TOGGLE;
}
}
}
if (bp->bio_cmd == BIO_WRITE) {
if ((rdp->disks[buf1->drive+rdp->width].flags & AR_DF_ONLINE) ||
((rdp->flags & AR_F_REBUILDING) &&
(rdp->disks[buf1->drive+rdp->width].flags & AR_DF_SPARE) &&
buf1->bp.bio_pblkno < rdp->lock_start)) {
if ((rdp->disks[buf1->drive].flags & AR_DF_ONLINE) ||
((rdp->flags & AR_F_REBUILDING) &&
(rdp->disks[buf1->drive].flags & AR_DF_SPARE) &&
buf1->bp.bio_pblkno < rdp->lock_start)) {
buf2 = malloc(sizeof(struct ar_buf), M_AR, M_NOWAIT); /* XXX */
bcopy(buf1, buf2, sizeof(struct ar_buf));
buf1->mirror = buf2;
buf2->mirror = buf1;
buf2->drive = buf1->drive + rdp->width;
buf2->bp.bio_disk =
AD_SOFTC(rdp->disks[buf2->drive])->disk;
AR_STRATEGY((struct bio *)buf2);
rdp->disks[buf2->drive].last_lba =
buf2->bp.bio_pblkno + chunk;
}
else
buf1->drive = buf1->drive + rdp->width;
}
}
buf1->bp.bio_disk = AD_SOFTC(rdp->disks[buf1->drive])->disk;
AR_STRATEGY((struct bio *)buf1);
rdp->disks[buf1->drive].last_lba = buf1->bp.bio_pblkno + chunk;
break;
default:
printf("ar%d: unknown array type in arstrategy\n", rdp->lun);
}
}
}
static void
ar_done(struct bio *bp)
{
struct ar_softc *rdp = (struct ar_softc *)bp->bio_driver1;
struct ar_buf *buf = (struct ar_buf *)bp;
switch (rdp->flags & (AR_F_RAID0 | AR_F_RAID1 | AR_F_SPAN)) {
case AR_F_SPAN:
case AR_F_RAID0:
if (buf->bp.bio_flags & BIO_ERROR) {
rdp->disks[buf->drive].flags &= ~AR_DF_ONLINE;
ar_config_changed(rdp, 1);
buf->org->bio_flags |= BIO_ERROR;
buf->org->bio_error = EIO;
biodone(buf->org);
}
else {
buf->org->bio_resid -= buf->bp.bio_bcount;
if (buf->org->bio_resid == 0)
biodone(buf->org);
}
break;
case AR_F_RAID1:
case AR_F_RAID0 | AR_F_RAID1:
if (buf->bp.bio_flags & BIO_ERROR) {
rdp->disks[buf->drive].flags &= ~AR_DF_ONLINE;
ar_config_changed(rdp, 1);
if (rdp->flags & AR_F_READY) {
if (buf->bp.bio_cmd == BIO_READ) {
if (buf->drive < rdp->width)
buf->drive = buf->drive + rdp->width;
else
buf->drive = buf->drive - rdp->width;
buf->bp.bio_disk = AD_SOFTC(rdp->disks[buf->drive])->disk;
buf->bp.bio_flags = buf->org->bio_flags;
buf->bp.bio_error = 0;
AR_STRATEGY((struct bio *)buf);
return;
}
if (buf->bp.bio_cmd == BIO_WRITE) {
if (buf->flags & AB_F_DONE) {
buf->org->bio_resid -= buf->bp.bio_bcount;
if (buf->org->bio_resid == 0)
biodone(buf->org);
}
else
buf->mirror->flags |= AB_F_DONE;
}
}
else {
buf->org->bio_flags |= BIO_ERROR;
buf->org->bio_error = EIO;
biodone(buf->org);
}
}
else {
if (buf->bp.bio_cmd == BIO_WRITE) {
if (buf->mirror && !(buf->flags & AB_F_DONE)){
buf->mirror->flags |= AB_F_DONE;
break;
}
}
buf->org->bio_resid -= buf->bp.bio_bcount;
if (buf->org->bio_resid == 0)
biodone(buf->org);
}
break;
default:
printf("ar%d: unknown array type in ar_done\n", rdp->lun);
}
free(buf, M_AR);
}
static void
ar_config_changed(struct ar_softc *rdp, int writeback)
{
int disk, flags;
flags = rdp->flags;
rdp->flags |= AR_F_READY;
rdp->flags &= ~AR_F_DEGRADED;
for (disk = 0; disk < rdp->total_disks; disk++)
if (!(rdp->disks[disk].flags & AR_DF_PRESENT))
rdp->disks[disk].flags &= ~AR_DF_ONLINE;
for (disk = 0; disk < rdp->total_disks; disk++) {
switch (rdp->flags & (AR_F_RAID0 | AR_F_RAID1 | AR_F_SPAN)) {
case AR_F_SPAN:
case AR_F_RAID0:
if (!(rdp->disks[disk].flags & AR_DF_ONLINE)) {
rdp->flags &= ~AR_F_READY;
printf("ar%d: ERROR - array broken\n", rdp->lun);
}
break;
case AR_F_RAID1:
case AR_F_RAID0 | AR_F_RAID1:
if (disk < rdp->width) {
if (!(rdp->disks[disk].flags & AR_DF_ONLINE) &&
!(rdp->disks[disk + rdp->width].flags & AR_DF_ONLINE)) {
rdp->flags &= ~AR_F_READY;
printf("ar%d: ERROR - array broken\n", rdp->lun);
}
else if (((rdp->disks[disk].flags & AR_DF_ONLINE) &&
!(rdp->disks
[disk + rdp->width].flags & AR_DF_ONLINE))||
(!(rdp->disks[disk].flags & AR_DF_ONLINE) &&
(rdp->disks
[disk + rdp->width].flags & AR_DF_ONLINE))) {
rdp->flags |= AR_F_DEGRADED;
if (!(flags & AR_F_DEGRADED))
printf("ar%d: WARNING - mirror lost\n", rdp->lun);
}
}
break;
}
if ((rdp->disks[disk].flags&AR_DF_PRESENT) && rdp->disks[disk].device) {
/* SOS
if (rdp->disks[disk].flags & AR_DF_ONLINE)
ata_enclosure_leds(rdp->disks[disk].device, ATA_LED_GREEN);
else
ata_enclosure_leds(rdp->disks[disk].device, ATA_LED_RED);
XXX */
}
}
if (writeback) {
if (rdp->flags & AR_F_PROMISE_RAID)
ar_promise_write_conf(rdp);
if (rdp->flags & AR_F_HIGHPOINT_RAID)
ar_highpoint_write_conf(rdp);
}
}
static void
ar_rebuild(void *arg)
{
struct ar_softc *rdp = arg;
int disk, s, count = 0, error = 0;
caddr_t buffer;
mtx_lock(&Giant);
if ((rdp->flags & (AR_F_READY|AR_F_DEGRADED)) != (AR_F_READY|AR_F_DEGRADED))
kthread_exit(EEXIST);
for (disk = 0; disk < rdp->total_disks; disk++) {
if (((rdp->disks[disk].flags&(AR_DF_PRESENT|AR_DF_ONLINE|AR_DF_SPARE))==
(AR_DF_PRESENT | AR_DF_SPARE)) && rdp->disks[disk].device) {
if (AD_SOFTC(rdp->disks[disk])->total_secs <
rdp->disks[disk].disk_sectors) {
ata_prtdev(rdp->disks[disk].device,
"disk capacity too small for this RAID config\n");
#if 0
rdp->disks[disk].flags &= ~AR_DF_SPARE;
AD_SOFTC(rdp->disks[disk])->flags &= ~AD_F_RAID_SUBDISK;
#endif
continue;
}
/* SOS
ata_enclosure_leds(rdp->disks[disk].device, ATA_LED_ORANGE);
XXX */
count++;
}
}
if (!count)
kthread_exit(ENODEV);
/* setup start conditions */
s = splbio();
rdp->lock_start = 0;
rdp->lock_end = rdp->lock_start + AR_REBUILD_SIZE;
rdp->flags |= AR_F_REBUILDING;
splx(s);
buffer = malloc(AR_REBUILD_SIZE * DEV_BSIZE, M_AR, M_NOWAIT | M_ZERO); /* XXX */
/* now go copy entire disk(s) */
while (rdp->lock_end < (rdp->total_sectors / rdp->width)) {
int size = min(AR_REBUILD_SIZE,
(rdp->total_sectors / rdp->width) - rdp->lock_end);
for (disk = 0; disk < rdp->width; disk++) {
struct ad_softc *adp;
if (((rdp->disks[disk].flags & AR_DF_ONLINE) &&
(rdp->disks[disk + rdp->width].flags & AR_DF_ONLINE)) ||
((rdp->disks[disk].flags & AR_DF_ONLINE) &&
!(rdp->disks[disk + rdp->width].flags & AR_DF_SPARE)) ||
((rdp->disks[disk + rdp->width].flags & AR_DF_ONLINE) &&
!(rdp->disks[disk].flags & AR_DF_SPARE)))
continue;
if (rdp->disks[disk].flags & AR_DF_ONLINE)
adp = AD_SOFTC(rdp->disks[disk]);
else
adp = AD_SOFTC(rdp->disks[disk + rdp->width]);
if ((error = ar_rw(adp, rdp->lock_start,
size * DEV_BSIZE, buffer, AR_READ | AR_WAIT)))
break;
if (rdp->disks[disk].flags & AR_DF_ONLINE)
adp = AD_SOFTC(rdp->disks[disk + rdp->width]);
else
adp = AD_SOFTC(rdp->disks[disk]);
if ((error = ar_rw(adp, rdp->lock_start,
size * DEV_BSIZE, buffer, AR_WRITE | AR_WAIT)))
break;
}
if (error) {
wakeup(rdp);
free(buffer, M_AR);
kthread_exit(error);
}
s = splbio();
rdp->lock_start = rdp->lock_end;
rdp->lock_end = rdp->lock_start + size;
splx(s);
wakeup(rdp);
sprintf(rdp->pid->p_comm, "rebuilding ar%d %lld%%", rdp->lun,
(unsigned long long)(100 * rdp->lock_start /
(rdp->total_sectors / rdp->width)));
}
free(buffer, M_AR);
for (disk = 0; disk < rdp->total_disks; disk++) {
if ((rdp->disks[disk].flags&(AR_DF_PRESENT|AR_DF_ONLINE|AR_DF_SPARE))==
(AR_DF_PRESENT | AR_DF_SPARE)) {
rdp->disks[disk].flags &= ~AR_DF_SPARE;
rdp->disks[disk].flags |= (AR_DF_ASSIGNED | AR_DF_ONLINE);
}
}
s = splbio();
rdp->lock_start = 0xffffffff;
rdp->lock_end = 0xffffffff;
rdp->flags &= ~AR_F_REBUILDING;
splx(s);
ar_config_changed(rdp, 1);
kthread_exit(0);
}
static int
ar_highpoint_read_conf(struct ad_softc *adp, struct ar_softc **raidp)
{
struct highpoint_raid_conf *info;
struct ar_softc *raid = NULL;
int array, disk_number = 0, retval = 0;
if (!(info = (struct highpoint_raid_conf *)
malloc(sizeof(struct highpoint_raid_conf), M_AR, M_NOWAIT | M_ZERO)))
return retval;
if (ar_rw(adp, HPT_LBA, sizeof(struct highpoint_raid_conf),
(caddr_t)info, AR_READ | AR_WAIT)) {
if (bootverbose)
printf("ar: HighPoint read conf failed\n");
goto highpoint_out;
}
/* check if this is a HighPoint RAID struct */
if (info->magic != HPT_MAGIC_OK && info->magic != HPT_MAGIC_BAD) {
if (bootverbose)
printf("ar: HighPoint check1 failed\n");
goto highpoint_out;
}
/* is this disk defined, or an old leftover/spare ? */
if (!info->magic_0) {
if (bootverbose)
printf("ar: HighPoint check2 failed\n");
goto highpoint_out;
}
/* now convert HighPoint config info into our generic form */
for (array = 0; array < MAX_ARRAYS; array++) {
if (!raidp[array]) {
raidp[array] =
(struct ar_softc*)malloc(sizeof(struct ar_softc), M_AR,
M_NOWAIT | M_ZERO);
if (!raidp[array]) {
printf("ar%d: failed to allocate raid config storage\n", array);
goto highpoint_out;
}
}
raid = raidp[array];
if (raid->flags & AR_F_PROMISE_RAID)
continue;
switch (info->type) {
case HPT_T_RAID0:
if ((info->order & (HPT_O_RAID0|HPT_O_OK))==(HPT_O_RAID0|HPT_O_OK))
goto highpoint_raid1;
if (info->order & (HPT_O_RAID0 | HPT_O_RAID1))
goto highpoint_raid01;
if (raid->magic_0 && raid->magic_0 != info->magic_0)
continue;
raid->magic_0 = info->magic_0;
raid->flags |= AR_F_RAID0;
raid->interleave = 1 << info->stripe_shift;
disk_number = info->disk_number;
if (!(info->order & HPT_O_OK))
info->magic = 0; /* mark bad */
break;
case HPT_T_RAID1:
highpoint_raid1:
if (raid->magic_0 && raid->magic_0 != info->magic_0)
continue;
raid->magic_0 = info->magic_0;
raid->flags |= AR_F_RAID1;
disk_number = (info->disk_number > 0);
break;
case HPT_T_RAID01_RAID0:
highpoint_raid01:
if (info->order & HPT_O_RAID0) {
if ((raid->magic_0 && raid->magic_0 != info->magic_0) ||
(raid->magic_1 && raid->magic_1 != info->magic_1))
continue;
raid->magic_0 = info->magic_0;
raid->magic_1 = info->magic_1;
raid->flags |= (AR_F_RAID0 | AR_F_RAID1);
raid->interleave = 1 << info->stripe_shift;
disk_number = info->disk_number;
}
else {
if (raid->magic_1 && raid->magic_1 != info->magic_1)
continue;
raid->magic_1 = info->magic_1;
raid->flags |= (AR_F_RAID0 | AR_F_RAID1);
raid->interleave = 1 << info->stripe_shift;
disk_number = info->disk_number + info->array_width;
if (!(info->order & HPT_O_RAID1))
info->magic = 0; /* mark bad */
}
break;
case HPT_T_SPAN:
if (raid->magic_0 && raid->magic_0 != info->magic_0)
continue;
raid->magic_0 = info->magic_0;
raid->flags |= AR_F_SPAN;
disk_number = info->disk_number;
break;
default:
printf("ar%d: HighPoint unknown RAID type 0x%02x\n",
array, info->type);
goto highpoint_out;
}
raid->flags |= AR_F_HIGHPOINT_RAID;
raid->disks[disk_number].device = adp->device;
raid->disks[disk_number].flags = (AR_DF_PRESENT | AR_DF_ASSIGNED);
AD_SOFTC(raid->disks[disk_number])->flags |= AD_F_RAID_SUBDISK;
raid->lun = array;
if (info->magic == HPT_MAGIC_OK) {
raid->disks[disk_number].flags |= AR_DF_ONLINE;
raid->flags |= AR_F_READY;
raid->width = info->array_width;
raid->heads = 255;
raid->sectors = 63;
raid->cylinders = info->total_sectors / (63 * 255);
raid->total_sectors = info->total_sectors;
raid->offset = HPT_LBA + 1;
raid->reserved = HPT_LBA + 1;
raid->lock_start = raid->lock_end = info->rebuild_lba;
raid->disks[disk_number].disk_sectors =
info->total_sectors / info->array_width;
}
else
raid->disks[disk_number].flags &= ~ AR_DF_ONLINE;
if ((raid->flags & AR_F_RAID0) && (raid->total_disks < raid->width))
raid->total_disks = raid->width;
if (disk_number >= raid->total_disks)
raid->total_disks = disk_number + 1;
retval = 1;
break;
}
highpoint_out:
free(info, M_AR);
return retval;
}
static int
ar_highpoint_write_conf(struct ar_softc *rdp)
{
struct highpoint_raid_conf *config;
struct timeval timestamp;
int disk;
microtime(&timestamp);
rdp->magic_0 = timestamp.tv_sec + 2;
rdp->magic_1 = timestamp.tv_sec;
for (disk = 0; disk < rdp->total_disks; disk++) {
if (!(config = (struct highpoint_raid_conf *)
malloc(sizeof(struct highpoint_raid_conf),
M_AR, M_NOWAIT | M_ZERO))) {
printf("ar%d: Highpoint write conf failed\n", rdp->lun);
return -1;
}
if ((rdp->disks[disk].flags & (AR_DF_PRESENT | AR_DF_ONLINE)) ==
(AR_DF_PRESENT | AR_DF_ONLINE))
config->magic = HPT_MAGIC_OK;
if (rdp->disks[disk].flags & AR_DF_ASSIGNED) {
config->magic_0 = rdp->magic_0;
strcpy(config->name_1, "FreeBSD");
}
config->disk_number = disk;
switch (rdp->flags & (AR_F_RAID0 | AR_F_RAID1 | AR_F_SPAN)) {
case AR_F_RAID0:
config->type = HPT_T_RAID0;
strcpy(config->name_2, "RAID 0");
if (rdp->disks[disk].flags & AR_DF_ONLINE)
config->order = HPT_O_OK;
break;
case AR_F_RAID1:
config->type = HPT_T_RAID0;
strcpy(config->name_2, "RAID 1");
config->disk_number = (disk < rdp->width) ? disk : disk + 5;
config->order = HPT_O_RAID0 | HPT_O_OK;
break;
case AR_F_RAID0 | AR_F_RAID1:
config->type = HPT_T_RAID01_RAID0;
strcpy(config->name_2, "RAID 0+1");
if (rdp->disks[disk].flags & AR_DF_ONLINE) {
if (disk < rdp->width) {
config->order = (HPT_O_RAID0 | HPT_O_RAID1);
config->magic_0 = rdp->magic_0 - 1;
}
else {
config->order = HPT_O_RAID1;
config->disk_number -= rdp->width;
}
}
else
config->magic_0 = rdp->magic_0 - 1;
config->magic_1 = rdp->magic_1;
break;
case AR_F_SPAN:
config->type = HPT_T_SPAN;
strcpy(config->name_2, "SPAN");
break;
}
config->array_width = rdp->width;
config->stripe_shift = (rdp->width > 1) ? (ffs(rdp->interleave)-1) : 0;
config->total_sectors = rdp->total_sectors;
config->rebuild_lba = rdp->lock_start;
if (rdp->disks[disk].device && rdp->disks[disk].device->softc &&
!(rdp->disks[disk].device->flags & ATA_D_DETACHING)) {
if (ar_rw(AD_SOFTC(rdp->disks[disk]), HPT_LBA,
sizeof(struct highpoint_raid_conf),
(caddr_t)config, AR_WRITE)) {
printf("ar%d: Highpoint write conf failed\n", rdp->lun);
free(config, M_AR);
return -1;
}
}
free(config, M_AR);
}
return 0;
}
static int
ar_promise_read_conf(struct ad_softc *adp, struct ar_softc **raidp, int local)
{
struct promise_raid_conf *info;
struct ar_softc *raid;
u_int32_t magic, cksum, *ckptr;
int array, count, disk, disksum = 0, retval = 0;
if (!(info = (struct promise_raid_conf *)
malloc(sizeof(struct promise_raid_conf), M_AR, M_NOWAIT | M_ZERO)))
return retval;
if (ar_rw(adp, PR_LBA(adp), sizeof(struct promise_raid_conf),
(caddr_t)info, AR_READ | AR_WAIT)) {
if (bootverbose)
printf("ar: %s read conf failed\n", local ? "FreeBSD" : "Promise");
goto promise_out;
}
/* check if this is a Promise RAID struct (or our local one) */
if (local) {
if (strncmp(info->promise_id, ATA_MAGIC, sizeof(ATA_MAGIC))) {
if (bootverbose)
printf("ar: FreeBSD check1 failed\n");
goto promise_out;
}
}
else {
if (strncmp(info->promise_id, PR_MAGIC, sizeof(PR_MAGIC))) {
if (bootverbose)
printf("ar: Promise check1 failed\n");
goto promise_out;
}
}
/* check if the checksum is OK */
for (cksum = 0, ckptr = (int32_t *)info, count = 0; count < 511; count++)
cksum += *ckptr++;
if (cksum != *ckptr) {
if (bootverbose)
printf("ar: %s check2 failed\n", local ? "FreeBSD" : "Promise");
goto promise_out;
}
/* now convert Promise config info into our generic form */
if (info->raid.integrity != PR_I_VALID) {
if (bootverbose)
printf("ar: %s check3 failed\n", local ? "FreeBSD" : "Promise");
goto promise_out;
}
for (array = 0; array < MAX_ARRAYS; array++) {
if (!raidp[array]) {
raidp[array] =
(struct ar_softc*)malloc(sizeof(struct ar_softc), M_AR,
M_NOWAIT | M_ZERO);
if (!raidp[array]) {
printf("ar%d: failed to allocate raid config storage\n", array);
goto promise_out;
}
}
raid = raidp[array];
if (raid->flags & AR_F_HIGHPOINT_RAID)
continue;
magic = (pci_get_device(device_get_parent(
adp->device->channel->dev)) >> 16) |
(info->raid.array_number << 16);
if (raid->flags & AR_F_PROMISE_RAID && magic != raid->magic_0)
continue;
/* update our knowledge about the array config based on generation */
if (!info->raid.generation || info->raid.generation > raid->generation){
raid->generation = info->raid.generation;
raid->flags = AR_F_PROMISE_RAID;
if (local)
raid->flags |= AR_F_FREEBSD_RAID;
raid->magic_0 = magic;
raid->lun = array;
if ((info->raid.status &
(PR_S_VALID | PR_S_ONLINE | PR_S_INITED | PR_S_READY)) ==
(PR_S_VALID | PR_S_ONLINE | PR_S_INITED | PR_S_READY)) {
raid->flags |= AR_F_READY;
if (info->raid.status & PR_S_DEGRADED)
raid->flags |= AR_F_DEGRADED;
}
else
raid->flags &= ~AR_F_READY;
switch (info->raid.type) {
case PR_T_RAID0:
raid->flags |= AR_F_RAID0;
break;
case PR_T_RAID1:
raid->flags |= AR_F_RAID1;
if (info->raid.array_width > 1)
raid->flags |= AR_F_RAID0;
break;
case PR_T_SPAN:
raid->flags |= AR_F_SPAN;
break;
default:
printf("ar%d: %s unknown RAID type 0x%02x\n",
array, local ? "FreeBSD" : "Promise", info->raid.type);
goto promise_out;
}
raid->interleave = 1 << info->raid.stripe_shift;
raid->width = info->raid.array_width;
raid->total_disks = info->raid.total_disks;
raid->heads = info->raid.heads + 1;
raid->sectors = info->raid.sectors;
raid->cylinders = info->raid.cylinders + 1;
raid->total_sectors = info->raid.total_sectors;
raid->offset = 0;
raid->reserved = 63;
raid->lock_start = raid->lock_end = info->raid.rebuild_lba;
/* convert disk flags to our internal types */
for (disk = 0; disk < info->raid.total_disks; disk++) {
raid->disks[disk].flags = 0;
disksum += info->raid.disk[disk].flags;
if (info->raid.disk[disk].flags & PR_F_ONLINE)
raid->disks[disk].flags |= AR_DF_ONLINE;
if (info->raid.disk[disk].flags & PR_F_ASSIGNED)
raid->disks[disk].flags |= AR_DF_ASSIGNED;
if (info->raid.disk[disk].flags & PR_F_SPARE) {
raid->disks[disk].flags &= ~AR_DF_ONLINE;
raid->disks[disk].flags |= AR_DF_SPARE;
}
if (info->raid.disk[disk].flags & (PR_F_REDIR | PR_F_DOWN))
raid->disks[disk].flags &= ~AR_DF_ONLINE;
}
if (!disksum) {
free(raidp[array], M_AR);
raidp[array] = NULL;
goto promise_out;
}
}
if (info->raid.generation >= raid->generation) {
if (raid->disks[info->raid.disk_number].flags && adp->device) {
raid->disks[info->raid.disk_number].device = adp->device;
raid->disks[info->raid.disk_number].flags |= AR_DF_PRESENT;
raid->disks[info->raid.disk_number].disk_sectors =
info->raid.disk_sectors;
if ((raid->disks[info->raid.disk_number].flags &
(AR_DF_PRESENT | AR_DF_ASSIGNED | AR_DF_ONLINE)) ==
(AR_DF_PRESENT | AR_DF_ASSIGNED | AR_DF_ONLINE)) {
AD_SOFTC(raid->disks[info->raid.disk_number])->flags |=
AD_F_RAID_SUBDISK;
retval = 1;
}
}
}
break;
}
promise_out:
free(info, M_AR);
return retval;
}
static int
ar_promise_write_conf(struct ar_softc *rdp)
{
struct promise_raid_conf *config;
struct timeval timestamp;
u_int32_t *ckptr;
int count, disk, drive;
int local = rdp->flags & AR_F_FREEBSD_RAID;
rdp->generation++;
microtime(&timestamp);
for (disk = 0; disk < rdp->total_disks; disk++) {
if (!(config = (struct promise_raid_conf *)
malloc(sizeof(struct promise_raid_conf), M_AR, M_NOWAIT))) {
printf("ar%d: %s write conf failed\n",
rdp->lun, local ? "FreeBSD" : "Promise");
return -1;
}
for (count = 0; count < sizeof(struct promise_raid_conf); count++)
*(((u_int8_t *)config) + count) = 255 - (count % 256);
config->dummy_0 = 0x00020000;
config->magic_0 = PR_MAGIC0(rdp->disks[disk]) | timestamp.tv_sec;
config->magic_1 = timestamp.tv_sec >> 16;
config->magic_2 = timestamp.tv_sec;
config->raid.integrity = PR_I_VALID;
config->raid.disk_number = disk;
if (rdp->disks[disk].flags & AR_DF_PRESENT && rdp->disks[disk].device) {
config->raid.channel = rdp->disks[disk].device->channel->unit;
config->raid.device = (rdp->disks[disk].device->unit != 0);
if (rdp->disks[disk].device->softc)
config->raid.disk_sectors = PR_LBA(AD_SOFTC(rdp->disks[disk]));
/*config->raid.disk_offset*/
}
config->raid.magic_0 = config->magic_0;
config->raid.rebuild_lba = rdp->lock_start;
config->raid.generation = rdp->generation;
if (rdp->flags & AR_F_READY) {
config->raid.flags = (PR_F_VALID | PR_F_ASSIGNED | PR_F_ONLINE);
config->raid.status =
(PR_S_VALID | PR_S_ONLINE | PR_S_INITED | PR_S_READY);
if (rdp->flags & AR_F_DEGRADED)
config->raid.status |= PR_S_DEGRADED;
else
config->raid.status |= PR_S_FUNCTIONAL;
}
else {
config->raid.flags = PR_F_DOWN;
config->raid.status = 0;
}
switch (rdp->flags & (AR_F_RAID0 | AR_F_RAID1 | AR_F_SPAN)) {
case AR_F_RAID0:
config->raid.type = PR_T_RAID0;
break;
case AR_F_RAID1:
config->raid.type = PR_T_RAID1;
break;
case AR_F_RAID0 | AR_F_RAID1:
config->raid.type = PR_T_RAID1;
break;
case AR_F_SPAN:
config->raid.type = PR_T_SPAN;
break;
}
config->raid.total_disks = rdp->total_disks;
config->raid.stripe_shift = ffs(rdp->interleave) - 1;
config->raid.array_width = rdp->width;
config->raid.array_number = rdp->lun;
config->raid.total_sectors = rdp->total_sectors;
config->raid.cylinders = rdp->cylinders - 1;
config->raid.heads = rdp->heads - 1;
config->raid.sectors = rdp->sectors;
config->raid.magic_1 = (u_int64_t)config->magic_2<<16 | config->magic_1;
bzero(&config->raid.disk, 8 * 12);
for (drive = 0; drive < rdp->total_disks; drive++) {
config->raid.disk[drive].flags = 0;
if (rdp->disks[drive].flags & AR_DF_PRESENT)
config->raid.disk[drive].flags |= PR_F_VALID;
if (rdp->disks[drive].flags & AR_DF_ASSIGNED)
config->raid.disk[drive].flags |= PR_F_ASSIGNED;
if (rdp->disks[drive].flags & AR_DF_ONLINE)
config->raid.disk[drive].flags |= PR_F_ONLINE;
else
if (rdp->disks[drive].flags & AR_DF_PRESENT)
config->raid.disk[drive].flags = (PR_F_REDIR | PR_F_DOWN);
if (rdp->disks[drive].flags & AR_DF_SPARE)
config->raid.disk[drive].flags |= PR_F_SPARE;
config->raid.disk[drive].dummy_0 = 0x0;
if (rdp->disks[drive].device) {
config->raid.disk[drive].channel =
rdp->disks[drive].device->channel->unit;
config->raid.disk[drive].device =
(rdp->disks[drive].device->unit != 0);
}
config->raid.disk[drive].magic_0 =
PR_MAGIC0(rdp->disks[drive]) | timestamp.tv_sec;
}
if (rdp->disks[disk].device && rdp->disks[disk].device->softc &&
!(rdp->disks[disk].device->flags & ATA_D_DETACHING)) {
if ((rdp->disks[disk].flags & (AR_DF_PRESENT | AR_DF_ONLINE)) ==
(AR_DF_PRESENT | AR_DF_ONLINE)) {
if (local)
bcopy(ATA_MAGIC, config->promise_id, sizeof(ATA_MAGIC));
else
bcopy(PR_MAGIC, config->promise_id, sizeof(PR_MAGIC));
}
else
bzero(config->promise_id, sizeof(config->promise_id));
config->checksum = 0;
for (ckptr = (int32_t *)config, count = 0; count < 511; count++)
config->checksum += *ckptr++;
if (ar_rw(AD_SOFTC(rdp->disks[disk]),
PR_LBA(AD_SOFTC(rdp->disks[disk])),
sizeof(struct promise_raid_conf),
(caddr_t)config, AR_WRITE)) {
printf("ar%d: %s write conf failed\n",
rdp->lun, local ? "FreeBSD" : "Promise");
free(config, M_AR);
return -1;
}
}
free(config, M_AR);
}
return 0;
}
static void
ar_rw_done(struct bio *bp)
{
free(bp->bio_data, M_AR);
free(bp, M_AR);
}
static int
ar_rw(struct ad_softc *adp, u_int32_t lba, int count, caddr_t data, int flags)
{
struct bio *bp;
int retry = 0, error = 0;
if (!(bp = (struct bio *)malloc(sizeof(struct bio), M_AR, M_NOWAIT|M_ZERO)))
return 1;
bp->bio_disk = adp->disk;
bp->bio_data = data;
bp->bio_pblkno = lba;
bp->bio_bcount = count;
if (flags & AR_READ)
bp->bio_cmd = BIO_READ;
if (flags & AR_WRITE)
bp->bio_cmd = BIO_WRITE;
if (flags & AR_WAIT)
bp->bio_done = (void *)wakeup;
else
bp->bio_done = ar_rw_done;
AR_STRATEGY(bp);
if (flags & AR_WAIT) {
while ((retry++ < (15*hz/10)) && (error = !(bp->bio_flags & BIO_DONE)))
error = tsleep(bp, PRIBIO, "arrw", 10);
if (!error && bp->bio_flags & BIO_ERROR)
error = bp->bio_error;
free(bp, M_AR);
}
return error;
}
static struct ata_device *
ar_locate_disk(int diskno)
{
struct ata_channel *ch;
int ctlr;
for (ctlr = 0; ctlr < devclass_get_maxunit(ata_devclass); ctlr++) {
if (!(ch = devclass_get_softc(ata_devclass, ctlr)))
continue;
if (ch->devices & ATA_ATA_MASTER)
if (ch->device[MASTER].softc &&
((struct ad_softc *)(ch->device[MASTER].softc))->lun == diskno)
return &ch->device[MASTER];
if (ch->devices & ATA_ATA_SLAVE)
if (ch->device[SLAVE].softc &&
((struct ad_softc *)(ch->device[SLAVE].softc))->lun == diskno)
return &ch->device[SLAVE];
}
return NULL;
}
static void
ar_print_conf(struct ar_softc *config)
{
int i;
printf("lun %d\n", config->lun);
printf("magic_0 0x%08x\n", config->magic_0);
printf("magic_1 0x%08x\n", config->magic_1);
printf("flags 0x%02x %b\n", config->flags, config->flags,
"\20\16HIGHPOINT\15PROMISE\13REBUILDING\12DEGRADED\11READY\3SPAN\2RAID1\1RAID0\n");
printf("total_disks %d\n", config->total_disks);
printf("generation %d\n", config->generation);
printf("width %d\n", config->width);
printf("heads %d\n", config->heads);
printf("sectors %d\n", config->sectors);
printf("cylinders %d\n", config->cylinders);
printf("total_sectors %lld\n", (long long)config->total_sectors);
printf("interleave %d\n", config->interleave);
printf("reserved %d\n", config->reserved);
printf("offset %d\n", config->offset);
for (i = 0; i < config->total_disks; i++) {
printf("disk %d: flags = 0x%02x %b\n", i, config->disks[i].flags, config->disks[i].flags, "\20\4ONLINE\3SPARE\2ASSIGNED\1PRESENT\n");
if (config->disks[i].device)
printf(" %s\n", config->disks[i].device->name);
printf(" sectors %lld\n", (long long)config->disks[i].disk_sectors);
}
}
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