/* $NetBSD: ata_raid_adaptec.c,v 1.13 2023/08/01 07:58:41 mrg Exp $ */
/*-
* Copyright (c) 2000,2001,2002 S�ren Schmidt <
[email protected]>
* 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 Adaptec ATA RAID controller configuration blocks.
*
* Adapted to NetBSD by Allen K. Briggs
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ata_raid_adaptec.c,v 1.13 2023/08/01 07:58:41 mrg 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/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
int
ata_raid_read_config_adaptec(struct wd_softc *sc)
{
struct dk_softc *dksc = &sc->sc_dksc;
struct adaptec_raid_conf *info;
struct atabus_softc *atabus;
struct vnode *vp;
int bmajor, error;
dev_t dev;
uint32_t gen, drive;
struct ataraid_array_info *aai;
struct ataraid_disk_info *adi;
info = kmem_zalloc(sizeof(*info), KM_SLEEP);
bmajor = devsw_name2blk(dksc->sc_xname, NULL, 0);
/* Get a vnode for the raw partition of this disk. */
dev = MAKEDISKDEV(bmajor, device_unit(dksc->sc_dev), RAW_PART);
error = bdevvp(dev, &vp);
if (error)
goto out;
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
error = VOP_OPEN(vp, FREAD, NOCRED);
if (error) {
vput(vp);
goto out;
}
error = ata_raid_config_block_rw(vp, ADP_LBA(sc), info,
sizeof(*info), B_READ);
VOP_CLOSE(vp, FREAD, NOCRED);
vput(vp);
if (error) {
aprint_error_dev(dksc->sc_dev,
"error %d reading Adaptec config block\n", error);
goto out;
}
info->magic_0 = be32toh(info->magic_0);
info->magic_1 = be32toh(info->magic_1);
info->magic_2 = be32toh(info->magic_2);
info->magic_3 = be32toh(info->magic_3);
info->magic_4 = be32toh(info->magic_4);
/* Check the signature. */
if (info->magic_0 != ADP_MAGIC_0 || info->magic_3 != ADP_MAGIC_3) {
DPRINTF(("%s: Adaptec signature check failed\n",
dksc->sc_xname));
error = ESRCH;
goto out;
}
/*
* Lookup or allocate a new array info structure for
* this array.
*/
aai = ata_raid_get_array_info(ATA_RAID_TYPE_ADAPTEC,
be32toh(info->configs[0].disk_number));
gen = be32toh(info->generation);
if (gen == 0 || gen > aai->aai_generation) {
aai->aai_generation = gen;
aai->aai_status = AAI_S_READY;
switch (info->configs[0].type) {
case ADP_T_RAID0:
aai->aai_level = AAI_L_RAID0;
aai->aai_interleave =
(be16toh(info->configs[0].stripe_sectors) >> 1);
aai->aai_width = be16toh(info->configs[0].total_disks);
break;
case ADP_T_RAID1:
aai->aai_level = AAI_L_RAID1;
aai->aai_interleave = 0;
aai->aai_width = be16toh(info->configs[0].total_disks)
/ 2;
break;
default:
aprint_error_dev(dksc->sc_dev,
"unknown Adaptec RAID type 0x%02x\n",
info->configs[0].type);
error = EINVAL;
goto out;
}
aai->aai_type = ATA_RAID_TYPE_ADAPTEC;
aai->aai_ndisks = be16toh(info->configs[0].total_disks);
aai->aai_capacity = be32toh(info->configs[0].sectors);
aai->aai_heads = 255;
aai->aai_sectors = 63;
aai->aai_cylinders = aai->aai_capacity / (63 * 255);
aai->aai_offset = 0;
aai->aai_reserved = 17;
strlcpy(aai->aai_name, info->configs[0].name,
sizeof(aai->aai_name));
/* XXX - bogus. RAID1 shouldn't really have an interleave */
if (aai->aai_interleave == 0)
aai->aai_interleave = aai->aai_capacity;
}
atabus = device_private(device_parent(dksc->sc_dev));
drive = atabus->sc_chan->ch_channel;
if (drive >= aai->aai_ndisks) {
aprint_error_dev(dksc->sc_dev,
"drive number %d doesn't make sense within %d-disk "
"array\n", drive, aai->aai_ndisks);
error = EINVAL;
goto out;
}
adi = &aai->aai_disks[drive];
adi->adi_dev = dksc->sc_dev;
adi->adi_status = ADI_S_ONLINE | ADI_S_ASSIGNED;
adi->adi_sectors = aai->aai_capacity;
adi->adi_compsize = be32toh(info->configs[drive+1].sectors);
error = 0;
out:
kmem_free(info, sizeof(*info));
return (error);
}
