/* $NetBSD: ata_raid_jmicron.c,v 1.5 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. * 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 JMicron Technology RAID controller configuration blocks. * * Adapted to NetBSD by Juan Romero Pardines (xtraeme@gmail.org). */ #include __KERNEL_RCSID(0, "$NetBSD: ata_raid_jmicron.c,v 1.5 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 #ifdef ATA_RAID_DEBUG static const char * ata_raid_jmicron_type(int type) { static char buffer[16]; switch (type) { case JM_T_RAID0: return "RAID0"; case JM_T_RAID1: return "RAID1"; case JM_T_RAID01: return "RAID0+1"; case JM_T_RAID5: return "RAID5"; case JM_T_JBOD: return "JBOD"; default: snprintf(buffer, sizeof(buffer), "UNKNOWN 0x%02x", type); return buffer; } } static void ata_raid_jmicron_print_info(struct jmicron_raid_conf *info) { int i; printf("****** ATA JMicron Technology Corp Metadata ******\n"); printf("signature %.2s\n", info->signature); printf("version 0x%04x\n", info->version); printf("checksum 0x%04x\n", info->checksum); printf("disk_id 0x%08x\n", info->disk_id); printf("offset 0x%08x\n", info->offset); printf("disk_sectors_low 0x%08x\n", info->disk_sectors_low); printf("disk_sectors_high 0x%08x\n", info->disk_sectors_high); printf("name %.16s\n", info->name); printf("type %s\n", ata_raid_jmicron_type(info->type)); printf("stripe_shift %d\n", info->stripe_shift); printf("flags 0x%04x\n", info->flags); printf("spare:\n"); for (i = 0; i < 2 && info->spare[i]; i++) printf(" %d 0x%08x\n", i, info->spare[i]); printf("disks:\n"); for (i = 0; i < 8 && info->disks[i]; i++) printf(" %d 0x%08x\n", i, info->disks[i]); printf("=================================================\n"); } #endif int ata_raid_read_config_jmicron(struct wd_softc *sc) { struct atabus_softc *atabus; struct jmicron_raid_conf *info; struct vnode *vp; struct ataraid_array_info *aai; struct ataraid_disk_info *adi; uint64_t disk_size; uint32_t drive; uint16_t checksum, *ptr; int bmajor, error, count, disk, total_disks; dev_t dev; info = malloc(sizeof(*info), 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, JMICRON_LBA(sc), info, sizeof(*info), B_READ); VOP_CLOSE(vp, FREAD, NOCRED); vput(vp); if (error) { DPRINTF(("%s: error %d reading JMicron config block\n", device_xname(sc->sc_dev), error)); goto out; } /* Check for JMicron signature. */ if (strncmp(info->signature, JMICRON_MAGIC, 2)) { DPRINTF(("%s: JMicron RAID signature check failed\n", device_xname(sc->sc_dev))); error = ESRCH; goto out; } /* calculate checksum and compare for valid */ for (checksum = 0, ptr = (uint16_t *)info, count = 0; count < 64; count++) checksum += *ptr++; if (checksum) { DPRINTF(("%s: JMicron checksum failed\n", device_xname(sc->sc_dev))); error = ESRCH; goto out; } #ifdef ATA_RAID_DEBUG ata_raid_jmicron_print_info(info); #endif /* * Check that there aren't stale config blocks without * any array set configured. */ for (total_disks = 0, disk = 0; disk < JM_MAX_DISKS; disk++) if (info->disks[disk] == info->disk_id) total_disks++; if (total_disks <= 1) { error = EINVAL; goto out; } /* * Check volume's state and bail out if it's not acceptable. */ if ((info->flags & (JM_F_READY|JM_F_BOOTABLE|JM_F_ACTIVE)) == 0) { error = EINVAL; goto out; } /* * Lookup or allocate a new array info structure for * this array. */ aai = ata_raid_get_array_info(ATA_RAID_TYPE_JMICRON, 0); aai->aai_status = AAI_S_READY; switch (info->type) { case JM_T_RAID0: aai->aai_level = AAI_L_RAID0; aai->aai_width = total_disks; break; case JM_T_RAID1: aai->aai_level = AAI_L_RAID1; aai->aai_width = 1; break; case JM_T_RAID01: aai->aai_level = AAI_L_RAID0 | AAI_L_RAID1; aai->aai_width = total_disks / 2; break; case JM_T_JBOD: aai->aai_level = AAI_L_SPAN; aai->aai_width = total_disks; break; default: DPRINTF(("%s: unknown JMicron RAID type 0x%02x\n", device_xname(sc->sc_dev), info->type)); error = EINVAL; goto out; } disk_size = (info->disk_sectors_high << 16) + info->disk_sectors_low; aai->aai_type = ATA_RAID_TYPE_JMICRON; aai->aai_generation = 0; aai->aai_capacity = disk_size * aai->aai_width; aai->aai_interleave = 2 << info->stripe_shift; aai->aai_ndisks = 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 = info->offset * 16; aai->aai_reserved = 2; if (info->name) strlcpy(aai->aai_name, info->name, sizeof(aai->aai_name)); atabus = device_private(device_parent(sc->sc_dev)); drive = atabus->sc_chan->ch_channel; if (drive >= aai->aai_ndisks) { DPRINTF(("%s: drive number %d doesn't make sense within " "%d-disk array\n", device_xname(sc->sc_dev), drive, aai->aai_ndisks)); error = EINVAL; goto out; } if (info->disks[drive] == info->disk_id) { adi = &aai->aai_disks[drive]; adi->adi_dev = sc->sc_dev; adi->adi_status = ADI_S_ONLINE | ADI_S_ASSIGNED; adi->adi_sectors = aai->aai_capacity; adi->adi_compsize = disk_size - aai->aai_reserved; } error = 0; out: free(info, M_DEVBUF); return error; }