/* $NetBSD: ata_raid_intel.c,v 1.7 2014/03/25 16:19:13 christos Exp $ */ /*- * Copyright (c) 2000-2008 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. * * 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 Intel MatrixRAID controller configuration blocks. * * Adapted to NetBSD by Juan Romero Pardines (xtraeme@gmail.org). */ #include __KERNEL_RCSID(0, "$NetBSD: ata_raid_intel.c,v 1.7 2014/03/25 16:19:13 christos Exp $"); #include #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 static int find_volume_id(struct intel_raid_conf *); #ifdef ATA_RAID_DEBUG static const char * ata_raid_intel_type(int type) { static char buffer[16]; switch (type) { case INTEL_T_RAID0: return "RAID0"; case INTEL_T_RAID1: return "RAID1"; case INTEL_T_RAID5: return "RAID5"; default: snprintf(buffer, sizeof(buffer), "UNKNOWN 0x%02x", type); return buffer; } } static void ata_raid_intel_print_info(struct intel_raid_conf *info) { struct intel_raid_mapping *map; int i, j; printf("********* ATA Intel MatrixRAID Metadata *********\n"); printf("intel_id <%.24s>\n", info->intel_id); printf("version <%.6s>\n", info->version); printf("checksum 0x%08x\n", info->checksum); printf("config_size 0x%08x\n", info->config_size); printf("config_id 0x%08x\n", info->config_id); printf("generation 0x%08x\n", info->generation); printf("total_disks %u\n", info->total_disks); printf("total_volumes %u\n", info->total_volumes); printf("DISK# serial disk sectors disk_id flags\n"); for (i = 0; i < info->total_disks; i++) { printf(" %d <%.16s> %u 0x%08x 0x%08x\n", i, info->disk[i].serial, info->disk[i].sectors, info->disk[i].id, info->disk[i].flags); } map = (struct intel_raid_mapping *)&info->disk[info->total_disks]; for (j = 0; j < info->total_volumes; j++) { printf("name %.16s\n", map->name); printf("total_sectors %ju\n", map->total_sectors); printf("state %u\n", map->state); printf("reserved %u\n", map->reserved); printf("offset %u\n", map->offset); printf("disk_sectors %u\n", map->disk_sectors); printf("stripe_count %u\n", map->stripe_count); printf("stripe_sectors %u\n", map->stripe_sectors); printf("status %u\n", map->status); printf("type %s\n", ata_raid_intel_type(map->type)); printf("total_disks %u\n", map->total_disks); printf("magic[0] 0x%02x\n", map->magic[0]); printf("magic[1] 0x%02x\n", map->magic[1]); printf("magic[2] 0x%02x\n", map->magic[2]); for (i = 0; i < map->total_disks; i++) printf(" disk %d at disk_idx 0x%08x\n", i, map->disk_idx[i]); map = (struct intel_raid_mapping *) &map->disk_idx[map->total_disks]; } printf("=================================================\n"); } #endif int ata_raid_read_config_intel(struct wd_softc *sc) { struct intel_raid_conf *info; struct intel_raid_mapping *map; struct ataraid_array_info *aai; struct ataraid_disk_info *adi; struct vnode *vp; uint32_t checksum, *ptr; int bmajor, count, curvol = 0, error = 0; char *tmp; dev_t dev; int volumeid, diskidx; info = malloc(1536, 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, INTEL_LBA(sc), info, 1024, B_READ); VOP_CLOSE(vp, FREAD, NOCRED); vput(vp); if (error) { DPRINTF(("%s: error %d reading Intel MatrixRAID config block\n", device_xname(sc->sc_dev), error)); goto out; } tmp = (char *)info; (void)memcpy(tmp + 1024, tmp, 512); (void)memcpy(tmp, tmp + 512, 1024); (void)memset(tmp + 1024, 0, 512); /* Check if this is a Intel RAID struct */ if (strncmp(info->intel_id, INTEL_MAGIC, strlen(INTEL_MAGIC))) { DPRINTF(("%s: Intel MatrixRAID signature check failed\n", device_xname(sc->sc_dev))); error = ESRCH; goto out; } /* calculate checksum and compare for valid */ for (checksum = 0, ptr = (uint32_t *)info, count = 0; count < (info->config_size / sizeof(uint32_t)); count++) checksum += *ptr++; checksum -= info->checksum; if (checksum != info->checksum) { DPRINTF(("%s: Intel MatrixRAID checksum failed 0x%x != 0x%x\n", device_xname(sc->sc_dev), checksum, info->checksum)); error = ESRCH; goto out; } #ifdef ATA_RAID_DEBUG ata_raid_intel_print_info(info); #endif /* This one points to the first volume */ map = (struct intel_raid_mapping *)&info->disk[info->total_disks]; volumeid = find_volume_id(info); if (volumeid < 0) { aprint_error_dev(sc->sc_dev, "too many RAID arrays\n"); error = ENOMEM; goto out; } findvol: /* * Lookup or allocate a new array info structure for this array. */ aai = ata_raid_get_array_info(ATA_RAID_TYPE_INTEL, volumeid + curvol); /* Fill in array info */ aai->aai_generation = info->generation; aai->aai_status = AAI_S_READY; switch (map->type) { case INTEL_T_RAID0: aai->aai_level = AAI_L_RAID0; aai->aai_width = map->total_disks; break; case INTEL_T_RAID1: aai->aai_level = AAI_L_RAID1; aai->aai_width = 1; break; default: DPRINTF(("%s: unknown Intel MatrixRAID type 0x%02x\n", device_xname(sc->sc_dev), map->type)); error = EINVAL; goto out; } switch (map->state) { case INTEL_S_DEGRADED: aai->aai_status |= AAI_S_DEGRADED; break; case INTEL_S_DISABLED: case INTEL_S_FAILURE: aai->aai_status &= ~AAI_S_READY; break; } aai->aai_type = ATA_RAID_TYPE_INTEL; aai->aai_capacity = map->total_sectors; aai->aai_interleave = map->stripe_sectors; aai->aai_ndisks = map->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 = map->offset; aai->aai_reserved = 3; if (map->name) strlcpy(aai->aai_name, map->name, sizeof(aai->aai_name)); /* Fill in disk info */ diskidx = aai->aai_curdisk++; adi = &aai->aai_disks[diskidx]; adi->adi_status = 0; if (info->disk[diskidx].flags & INTEL_F_ONLINE) adi->adi_status |= ADI_S_ONLINE; if (info->disk[diskidx].flags & INTEL_F_ASSIGNED) adi->adi_status |= ADI_S_ASSIGNED; if (info->disk[diskidx].flags & INTEL_F_SPARE) { adi->adi_status &= ~ADI_S_ONLINE; adi->adi_status |= ADI_S_SPARE; } if (info->disk[diskidx].flags & INTEL_F_DOWN) adi->adi_status &= ~ADI_S_ONLINE; if (adi->adi_status) { adi->adi_dev = sc->sc_dev; adi->adi_sectors = info->disk[diskidx].sectors; adi->adi_compsize = adi->adi_sectors - aai->aai_reserved; /* * Check if that is the only volume, otherwise repeat * the process to find more. */ if ((curvol + 1) < info->total_volumes) { curvol++; map = (struct intel_raid_mapping *) &map->disk_idx[map->total_disks]; goto findvol; } } out: free(info, M_DEVBUF); return error; } /* * Assign `volume id' to RAID volumes. */ static struct { /* We assume disks are on the same array if these three values are same. */ uint32_t config_id; uint32_t generation; uint32_t checksum; int id; } array_note[10]; /* XXX: this array is not used after ld_ataraid is * configured. */ static int n_array = 0; static int volume_id = 0; static int find_volume_id(struct intel_raid_conf *info) { int i, ret; for (i=0; i < n_array; ++i) { if (info->checksum == array_note[i].checksum && info->config_id == array_note[i].config_id && info->generation == array_note[i].generation) { /* we have already seen this array */ return array_note[i].id; } } if (n_array >= __arraycount(array_note)) { /* Too many arrays */ return -1; } array_note[n_array].checksum = info->checksum; array_note[n_array].config_id = info->config_id; array_note[n_array].generation = info->generation; array_note[n_array].id = ret = volume_id; /* Allocate volume ids for all volumes in this array */ volume_id += info->total_volumes; ++n_array; return ret; }