194 lines
5.6 KiB
C
194 lines
5.6 KiB
C
/* $NetBSD: ata_raid_adaptec.c,v 1.9 2008/09/15 11:44:50 tron Exp $ */
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/*-
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* Copyright (c) 2000,2001,2002 Søren Schmidt <sos@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* without modification, immediately at the beginning of the file.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Support for parsing Adaptec ATA RAID controller configuration blocks.
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*
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* Adapted to NetBSD by Allen K. Briggs
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ata_raid_adaptec.c,v 1.9 2008/09/15 11:44:50 tron Exp $");
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#include <sys/param.h>
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#include <sys/buf.h>
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#include <sys/bufq.h>
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#include <sys/conf.h>
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#include <sys/device.h>
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#include <sys/disk.h>
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#include <sys/disklabel.h>
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#include <sys/fcntl.h>
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#include <sys/malloc.h>
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#include <sys/vnode.h>
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#include <sys/kauth.h>
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#include <miscfs/specfs/specdev.h>
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#include <dev/ata/atareg.h>
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#include <dev/ata/atavar.h>
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#include <dev/ata/wdvar.h>
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#include <dev/ata/ata_raidreg.h>
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#include <dev/ata/ata_raidvar.h>
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#ifdef ATA_RAID_DEBUG
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#define DPRINTF(x) printf x
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#else
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#define DPRINTF(x) /* nothing */
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#endif
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int
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ata_raid_read_config_adaptec(struct wd_softc *sc)
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{
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struct adaptec_raid_conf *info;
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struct atabus_softc *atabus;
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struct vnode *vp;
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int bmajor, error;
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dev_t dev;
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uint32_t gen, drive;
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struct ataraid_array_info *aai;
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struct ataraid_disk_info *adi;
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info = malloc(sizeof(*info), M_DEVBUF, M_WAITOK);
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bmajor = devsw_name2blk(device_xname(sc->sc_dev), NULL, 0);
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/* Get a vnode for the raw partition of this disk. */
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dev = MAKEDISKDEV(bmajor, device_unit(sc->sc_dev), RAW_PART);
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error = bdevvp(dev, &vp);
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if (error)
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goto out;
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error = VOP_OPEN(vp, FREAD, NOCRED);
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if (error) {
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vput(vp);
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goto out;
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}
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error = ata_raid_config_block_rw(vp, ADP_LBA(sc), info,
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sizeof(*info), B_READ);
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VOP_CLOSE(vp, FREAD, NOCRED);
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vput(vp);
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if (error) {
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aprint_error_dev(sc->sc_dev,
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"error %d reading Adaptec config block\n", error);
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goto out;
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}
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info->magic_0 = be32toh(info->magic_0);
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info->magic_1 = be32toh(info->magic_1);
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info->magic_2 = be32toh(info->magic_2);
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info->magic_3 = be32toh(info->magic_3);
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info->magic_4 = be32toh(info->magic_4);
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/* Check the signature. */
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if (info->magic_0 != ADP_MAGIC_0 || info->magic_3 != ADP_MAGIC_3) {
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DPRINTF(("%s: Adaptec signature check failed\n",
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device_xname(sc->sc_dev)));
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error = ESRCH;
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goto out;
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}
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/*
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* Lookup or allocate a new array info structure for
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* this array.
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*/
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aai = ata_raid_get_array_info(ATA_RAID_TYPE_ADAPTEC,
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be32toh(info->configs[0].disk_number));
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gen = be32toh(info->generation);
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if (gen == 0 || gen > aai->aai_generation) {
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aai->aai_generation = gen;
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aai->aai_status = AAI_S_READY;
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switch (info->configs[0].type) {
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case ADP_T_RAID0:
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aai->aai_level = AAI_L_RAID0;
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aai->aai_interleave =
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(be16toh(info->configs[0].stripe_sectors) >> 1);
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aai->aai_width = be16toh(info->configs[0].total_disks);
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break;
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case ADP_T_RAID1:
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aai->aai_level = AAI_L_RAID1;
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aai->aai_interleave = 0;
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aai->aai_width = be16toh(info->configs[0].total_disks)
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/ 2;
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break;
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default:
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aprint_error_dev(sc->sc_dev,
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"unknown Adaptec RAID type 0x%02x\n",
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info->configs[0].type);
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error = EINVAL;
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goto out;
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}
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aai->aai_type = ATA_RAID_TYPE_ADAPTEC;
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aai->aai_ndisks = be16toh(info->configs[0].total_disks);
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aai->aai_capacity = be32toh(info->configs[0].sectors);
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aai->aai_heads = 255;
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aai->aai_sectors = 63;
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aai->aai_cylinders = aai->aai_capacity / (63 * 255);
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aai->aai_offset = 0;
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aai->aai_reserved = 17;
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if (info->configs[0].name)
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strlcpy(aai->aai_name, info->configs[0].name,
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sizeof(aai->aai_name));
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/* XXX - bogus. RAID1 shouldn't really have an interleave */
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if (aai->aai_interleave == 0)
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aai->aai_interleave = aai->aai_capacity;
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}
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atabus = device_private(device_parent(sc->sc_dev));
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drive = atabus->sc_chan->ch_channel;
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if (drive >= aai->aai_ndisks) {
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aprint_error_dev(sc->sc_dev,
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"drive number %d doesn't make sense within %d-disk "
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"array\n", drive, aai->aai_ndisks);
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error = EINVAL;
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goto out;
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}
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adi = &aai->aai_disks[drive];
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adi->adi_dev = sc->sc_dev;
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adi->adi_status = ADI_S_ONLINE | ADI_S_ASSIGNED;
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adi->adi_sectors = aai->aai_capacity;
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adi->adi_compsize = be32toh(info->configs[drive+1].sectors);
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error = 0;
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out:
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free(info, M_DEVBUF);
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return (error);
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}
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