270 lines
7.6 KiB
C
270 lines
7.6 KiB
C
/* $NetBSD: ata_raid_jmicron.c,v 1.4 2009/05/11 17:14:31 cegger Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2000-2008 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.
|
|
*/
|
|
|
|
/*
|
|
* Support for parsing JMicron Technology RAID controller configuration blocks.
|
|
*
|
|
* Adapted to NetBSD by Juan Romero Pardines (xtraeme@gmail.org).
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: ata_raid_jmicron.c,v 1.4 2009/05/11 17:14:31 cegger Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/buf.h>
|
|
#include <sys/bufq.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/device.h>
|
|
#include <sys/disk.h>
|
|
#include <sys/disklabel.h>
|
|
#include <sys/fcntl.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/vnode.h>
|
|
#include <sys/kauth.h>
|
|
|
|
#include <miscfs/specfs/specdev.h>
|
|
|
|
#include <dev/ata/atareg.h>
|
|
#include <dev/ata/atavar.h>
|
|
#include <dev/ata/wdvar.h>
|
|
|
|
#include <dev/ata/ata_raidreg.h>
|
|
#include <dev/ata/ata_raidvar.h>
|
|
|
|
#ifdef ATA_RAID_DEBUG
|
|
#define DPRINTF(x) printf x
|
|
#else
|
|
#define DPRINTF(x) /* nothing */
|
|
#endif
|
|
|
|
#ifdef ATA_RAID_DEBUG
|
|
static const char *
|
|
ata_raid_jmicron_type(int type)
|
|
{
|
|
static char buffer[16];
|
|
|
|
switch (type) {
|
|
case JM_T_RAID0:
|
|
return "RAID0";
|
|
case JM_T_RAID1:
|
|
return "RAID1";
|
|
case JM_T_RAID01:
|
|
return "RAID0+1";
|
|
case JM_T_RAID5:
|
|
return "RAID5";
|
|
case JM_T_JBOD:
|
|
return "JBOD";
|
|
default:
|
|
sprintf(buffer, "UNKNOWN 0x%02x", type);
|
|
return buffer;
|
|
}
|
|
}
|
|
|
|
static void
|
|
ata_raid_jmicron_print_info(struct jmicron_raid_conf *info)
|
|
{
|
|
int i;
|
|
|
|
printf("****** ATA JMicron Technology Corp Metadata ******\n");
|
|
printf("signature %.2s\n", info->signature);
|
|
printf("version 0x%04x\n", info->version);
|
|
printf("checksum 0x%04x\n", info->checksum);
|
|
printf("disk_id 0x%08x\n", info->disk_id);
|
|
printf("offset 0x%08x\n", info->offset);
|
|
printf("disk_sectors_low 0x%08x\n", info->disk_sectors_low);
|
|
printf("disk_sectors_high 0x%08x\n", info->disk_sectors_high);
|
|
printf("name %.16s\n", info->name);
|
|
printf("type %s\n",
|
|
ata_raid_jmicron_type(info->type));
|
|
printf("stripe_shift %d\n", info->stripe_shift);
|
|
printf("flags 0x%04x\n", info->flags);
|
|
printf("spare:\n");
|
|
for (i = 0; i < 2 && info->spare[i]; i++)
|
|
printf(" %d 0x%08x\n", i, info->spare[i]);
|
|
printf("disks:\n");
|
|
for (i = 0; i < 8 && info->disks[i]; i++)
|
|
printf(" %d 0x%08x\n", i, info->disks[i]);
|
|
printf("=================================================\n");
|
|
}
|
|
#endif
|
|
|
|
int
|
|
ata_raid_read_config_jmicron(struct wd_softc *sc)
|
|
{
|
|
struct atabus_softc *atabus;
|
|
struct jmicron_raid_conf *info;
|
|
struct vnode *vp;
|
|
struct ataraid_array_info *aai;
|
|
struct ataraid_disk_info *adi;
|
|
uint64_t disk_size;
|
|
uint32_t drive;
|
|
uint16_t checksum, *ptr;
|
|
int bmajor, error, count, disk, total_disks;
|
|
dev_t dev;
|
|
|
|
info = malloc(sizeof(*info), M_DEVBUF, M_WAITOK|M_ZERO);
|
|
|
|
bmajor = devsw_name2blk(device_xname(sc->sc_dev), NULL, 0);
|
|
|
|
/* Get a vnode for the raw partition of this disk. */
|
|
dev = MAKEDISKDEV(bmajor, device_unit(sc->sc_dev), RAW_PART);
|
|
error = bdevvp(dev, &vp);
|
|
if (error)
|
|
goto out;
|
|
|
|
error = VOP_OPEN(vp, FREAD, NOCRED);
|
|
if (error) {
|
|
vput(vp);
|
|
goto out;
|
|
}
|
|
|
|
error = ata_raid_config_block_rw(vp, JMICRON_LBA(sc), info,
|
|
sizeof(*info), B_READ);
|
|
VOP_CLOSE(vp, FREAD, NOCRED);
|
|
vput(vp);
|
|
if (error) {
|
|
DPRINTF(("%s: error %d reading JMicron config block\n",
|
|
device_xname(sc->sc_dev), error));
|
|
goto out;
|
|
}
|
|
|
|
/* Check for JMicron signature. */
|
|
if (strncmp(info->signature, JMICRON_MAGIC, 2)) {
|
|
DPRINTF(("%s: JMicron RAID signature check failed\n",
|
|
device_xname(sc->sc_dev)));
|
|
error = ESRCH;
|
|
goto out;
|
|
}
|
|
|
|
/* calculate checksum and compare for valid */
|
|
for (checksum = 0, ptr = (uint16_t *)info, count = 0;
|
|
count < 64; count++)
|
|
checksum += *ptr++;
|
|
if (checksum) {
|
|
DPRINTF(("%s: JMicron checksum failed\n",
|
|
device_xname(sc->sc_dev)));
|
|
error = ESRCH;
|
|
goto out;
|
|
}
|
|
|
|
#ifdef ATA_RAID_DEBUG
|
|
ata_raid_jmicron_print_info(info);
|
|
#endif
|
|
/*
|
|
* Check that there aren't stale config blocks without
|
|
* any array set configured.
|
|
*/
|
|
for (total_disks = 0, disk = 0; disk < JM_MAX_DISKS; disk++)
|
|
if (info->disks[disk] == info->disk_id)
|
|
total_disks++;
|
|
if (total_disks <= 1) {
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Check volume's state and bail out if it's not acceptable.
|
|
*/
|
|
if ((info->flags & (JM_F_READY|JM_F_BOOTABLE|JM_F_ACTIVE)) == 0) {
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Lookup or allocate a new array info structure for
|
|
* this array.
|
|
*/
|
|
aai = ata_raid_get_array_info(ATA_RAID_TYPE_JMICRON, 0);
|
|
aai->aai_status = AAI_S_READY;
|
|
|
|
switch (info->type) {
|
|
case JM_T_RAID0:
|
|
aai->aai_level = AAI_L_RAID0;
|
|
aai->aai_width = total_disks;
|
|
break;
|
|
case JM_T_RAID1:
|
|
aai->aai_level = AAI_L_RAID1;
|
|
aai->aai_width = 1;
|
|
break;
|
|
case JM_T_RAID01:
|
|
aai->aai_level = AAI_L_RAID0 | AAI_L_RAID1;
|
|
aai->aai_width = total_disks / 2;
|
|
break;
|
|
case JM_T_JBOD:
|
|
aai->aai_level = AAI_L_SPAN;
|
|
aai->aai_width = total_disks;
|
|
break;
|
|
default:
|
|
DPRINTF(("%s: unknown JMicron RAID type 0x%02x\n",
|
|
device_xname(sc->sc_dev), info->type));
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
disk_size = (info->disk_sectors_high << 16) + info->disk_sectors_low;
|
|
aai->aai_type = ATA_RAID_TYPE_JMICRON;
|
|
aai->aai_generation = 0;
|
|
aai->aai_capacity = disk_size * aai->aai_width;
|
|
aai->aai_interleave = 2 << info->stripe_shift;
|
|
aai->aai_ndisks = total_disks;
|
|
aai->aai_heads = 255;
|
|
aai->aai_sectors = 63;
|
|
aai->aai_cylinders =
|
|
aai->aai_capacity / (aai->aai_heads * aai->aai_sectors);
|
|
aai->aai_offset = info->offset * 16;
|
|
aai->aai_reserved = 2;
|
|
if (info->name)
|
|
strlcpy(aai->aai_name, info->name, sizeof(aai->aai_name));
|
|
|
|
atabus = device_private(device_parent(sc->sc_dev));
|
|
drive = atabus->sc_chan->ch_channel;
|
|
if (drive >= aai->aai_ndisks) {
|
|
DPRINTF(("%s: drive number %d doesn't make sense within "
|
|
"%d-disk array\n", device_xname(sc->sc_dev),
|
|
drive, aai->aai_ndisks));
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (info->disks[drive] == info->disk_id) {
|
|
adi = &aai->aai_disks[drive];
|
|
adi->adi_dev = sc->sc_dev;
|
|
adi->adi_status = ADI_S_ONLINE | ADI_S_ASSIGNED;
|
|
adi->adi_sectors = aai->aai_capacity;
|
|
adi->adi_compsize = disk_size - aai->aai_reserved;
|
|
}
|
|
|
|
error = 0;
|
|
|
|
out:
|
|
free(info, M_DEVBUF);
|
|
return error;
|
|
}
|