/* $NetBSD: ata_raid_promise.c,v 1.5 2005/02/27 00:26:58 perry Exp $ */ /*- * Copyright (c) 2000,2001,2002 Søren Schmidt * 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 Promise ATA RAID controller configuration blocks. * * Adapted to NetBSD by Jason R. Thorpe of Wasabi Systems, Inc. */ #include __KERNEL_RCSID(0, "$NetBSD: ata_raid_promise.c,v 1.5 2005/02/27 00:26:58 perry Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef ATA_RAID_DEBUG #define DPRINTF(x) printf x #else #define DPRINTF(x) /* nothing */ #endif int ata_raid_read_config_promise(struct wd_softc *sc) { struct promise_raid_conf *info; struct vnode *vp; int bmajor, error, count; u_int disk; dev_t dev; uint32_t cksum, *ckptr; struct ataraid_array_info *aai; struct ataraid_disk_info *adi; info = malloc(sizeof(*info), M_DEVBUF, M_WAITOK); bmajor = devsw_name2blk(sc->sc_dev.dv_xname, NULL, 0); /* Get a vnode for the raw partition of this disk. */ dev = MAKEDISKDEV(bmajor, sc->sc_dev.dv_unit, RAW_PART); error = bdevvp(dev, &vp); if (error) goto out; error = VOP_OPEN(vp, FREAD, NOCRED, 0); if (error) { vput(vp); goto out; } error = ata_raid_config_block_rw(vp, PR_LBA(sc), info, sizeof(*info), B_READ); vput(vp); if (error) { printf("%s: error %d reading Promise config block\n", sc->sc_dev.dv_xname, error); goto out; } /* Check the signature. */ if (strncmp(info->promise_id, PR_MAGIC, sizeof(PR_MAGIC)) != 0) { DPRINTF(("%s: Promise signature check failed\n", sc->sc_dev.dv_xname)); error = ESRCH; goto out; } /* Verify the checksum. */ for (cksum = 0, ckptr = (uint32_t *) info, count = 0; count < 511; count++) cksum += *ckptr++; if (cksum != *ckptr) { DPRINTF(("%s: Promise checksum failed\n", sc->sc_dev.dv_xname)); error = ESRCH; goto out; } if (info->raid.integrity != PR_I_VALID) { DPRINTF(("%s: Promise config block marked invalid\n", sc->sc_dev.dv_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_PROMISE, info->raid.array_number); if (info->raid.generation == 0 || info->raid.generation > aai->aai_generation) { aai->aai_generation = info->raid.generation; /* aai_type and aai_arrayno filled in already */ 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)) { aai->aai_status |= AAI_S_READY; if (info->raid.status & PR_S_DEGRADED) aai->aai_status |= AAI_S_DEGRADED; } else aai->aai_status &= ~AAI_S_READY; switch (info->raid.type) { case PR_T_RAID0: aai->aai_level = AAI_L_RAID0; break; case PR_T_RAID1: aai->aai_level = AAI_L_RAID1; if (info->raid.array_width > 1) aai->aai_level |= AAI_L_RAID0; break; case PR_T_SPAN: aai->aai_level = AAI_L_SPAN; break; default: printf("%s: unknown Promise RAID type 0x%02x\n", sc->sc_dev.dv_xname, info->raid.type); error = EINVAL; goto out; } aai->aai_interleave = 1U << info->raid.stripe_shift; aai->aai_width = info->raid.array_width; aai->aai_ndisks = info->raid.total_disks; aai->aai_heads = info->raid.heads + 1; aai->aai_sectors = info->raid.sectors; aai->aai_cylinders = info->raid.cylinders + 1; aai->aai_capacity = info->raid.total_sectors; aai->aai_offset = 0; aai->aai_reserved = 63; for (disk = 0; disk < aai->aai_ndisks; disk++) { adi = &aai->aai_disks[disk]; adi->adi_status = 0; if (info->raid.disk[disk].flags & PR_F_ONLINE) adi->adi_status |= ADI_S_ONLINE; if (info->raid.disk[disk].flags & PR_F_ASSIGNED) adi->adi_status |= ADI_S_ASSIGNED; if (info->raid.disk[disk].flags & PR_F_SPARE) { adi->adi_status &= ~ADI_S_ONLINE; adi->adi_status |= ADI_S_SPARE; } if (info->raid.disk[disk].flags & (PR_F_REDIR | PR_F_DOWN)) adi->adi_status &= ~ADI_S_ONLINE; } } adi = &aai->aai_disks[info->raid.disk_number]; if (adi->adi_status) { adi->adi_dev = &sc->sc_dev; adi->adi_sectors = info->raid.disk_sectors; adi->adi_compsize = sc->sc_capacity - aai->aai_reserved; } error = 0; out: free(info, M_DEVBUF); return (error); }