213 lines
6.1 KiB
C
213 lines
6.1 KiB
C
/* $NetBSD: ata_raid_promise.c,v 1.13 2018/10/22 19:38:06 jdolecek 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 Promise ATA RAID controller configuration blocks.
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*
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* Adapted to NetBSD by Jason R. Thorpe of Wasabi Systems, Inc.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ata_raid_promise.c,v 1.13 2018/10/22 19:38:06 jdolecek 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/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_promise(struct wd_softc *sc)
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{
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struct dk_softc *dksc = &sc->sc_dksc;
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struct promise_raid_conf *info;
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struct vnode *vp;
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int bmajor, error, count;
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u_int disk;
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dev_t dev;
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uint32_t cksum, *ckptr;
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struct ataraid_array_info *aai;
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struct ataraid_disk_info *adi;
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info = kmem_zalloc(sizeof(*info), KM_SLEEP);
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bmajor = devsw_name2blk(dksc->sc_xname, 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(dksc->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, PR_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(dksc->sc_dev,
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"error %d reading Promise config block\n", error);
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goto out;
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}
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/* Check the signature. */
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if (strncmp(info->promise_id, PR_MAGIC, sizeof(PR_MAGIC)) != 0) {
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DPRINTF(("%s: Promise signature check failed\n",
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dksc->sc_xname));
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error = ESRCH;
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goto out;
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}
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/* Verify the checksum. */
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for (cksum = 0, ckptr = (uint32_t *) info, count = 0; count < 511;
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count++)
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cksum += *ckptr++;
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if (cksum != *ckptr) {
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DPRINTF(("%s: Promise checksum failed\n",
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dksc->sc_xname));
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error = ESRCH;
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goto out;
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}
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if (info->raid.integrity != PR_I_VALID) {
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DPRINTF(("%s: Promise config block marked invalid\n",
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dksc->sc_xname));
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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_PROMISE,
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info->raid.array_number);
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if (info->raid.generation == 0 ||
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info->raid.generation > aai->aai_generation) {
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aai->aai_generation = info->raid.generation;
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/* aai_type and aai_arrayno filled in already */
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if ((info->raid.status &
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(PR_S_VALID | PR_S_ONLINE | PR_S_INITED | PR_S_READY)) ==
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(PR_S_VALID | PR_S_ONLINE | PR_S_INITED | PR_S_READY)) {
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aai->aai_status |= AAI_S_READY;
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if (info->raid.status & PR_S_DEGRADED)
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aai->aai_status |= AAI_S_DEGRADED;
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} else
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aai->aai_status &= ~AAI_S_READY;
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switch (info->raid.type) {
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case PR_T_RAID0:
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aai->aai_level = AAI_L_RAID0;
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break;
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case PR_T_RAID1:
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aai->aai_level = AAI_L_RAID1;
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if (info->raid.array_width > 1)
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aai->aai_level |= AAI_L_RAID0;
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break;
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case PR_T_SPAN:
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aai->aai_level = AAI_L_SPAN;
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break;
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default:
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aprint_error_dev(dksc->sc_dev,
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"unknown Promise RAID type 0x%02x\n",
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info->raid.type);
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error = EINVAL;
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goto out;
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}
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aai->aai_interleave = 1U << info->raid.stripe_shift;
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aai->aai_width = info->raid.array_width;
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aai->aai_ndisks = info->raid.total_disks;
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aai->aai_heads = info->raid.heads + 1;
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aai->aai_sectors = info->raid.sectors;
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aai->aai_cylinders = info->raid.cylinders + 1;
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aai->aai_capacity = info->raid.total_sectors;
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aai->aai_offset = 0;
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aai->aai_reserved = 63;
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for (disk = 0; disk < aai->aai_ndisks; disk++) {
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adi = &aai->aai_disks[disk];
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adi->adi_status = 0;
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if (info->raid.disk[disk].flags & PR_F_ONLINE)
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adi->adi_status |= ADI_S_ONLINE;
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if (info->raid.disk[disk].flags & PR_F_ASSIGNED)
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adi->adi_status |= ADI_S_ASSIGNED;
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if (info->raid.disk[disk].flags & PR_F_SPARE) {
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adi->adi_status &= ~ADI_S_ONLINE;
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adi->adi_status |= ADI_S_SPARE;
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}
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if (info->raid.disk[disk].flags &
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(PR_F_REDIR | PR_F_DOWN))
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adi->adi_status &= ~ADI_S_ONLINE;
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}
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}
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adi = &aai->aai_disks[info->raid.disk_number];
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if (adi->adi_status) {
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adi->adi_dev = dksc->sc_dev;
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adi->adi_sectors = info->raid.disk_sectors;
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adi->adi_compsize = sc->sc_capacity - aai->aai_reserved;
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}
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error = 0;
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out:
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kmem_free(info, sizeof(*info));
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return (error);
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}
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