| 1 | /* $NetBSD: ata_raid_promise.c,v 1.11 2008/03/18 20:46:36 cube Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2000,2001,2002 Søren Schmidt <sos@FreeBSD.org> |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer, |
| 12 | * without modification, immediately at the beginning of the file. |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer in the |
| 15 | * documentation and/or other materials provided with the distribution. |
| 16 | * 3. The name of the author may not be used to endorse or promote products |
| 17 | * derived from this software without specific prior written permission. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 20 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 21 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 22 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 23 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 24 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 25 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 26 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 27 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 28 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 29 | */ |
| 30 | |
| 31 | /* |
| 32 | * Support for parsing Promise ATA RAID controller configuration blocks. |
| 33 | * |
| 34 | * Adapted to NetBSD by Jason R. Thorpe of Wasabi Systems, Inc. |
| 35 | */ |
| 36 | |
| 37 | #include <sys/cdefs.h> |
| 38 | __KERNEL_RCSID(0, "$NetBSD: ata_raid_promise.c,v 1.11 2008/03/18 20:46:36 cube Exp $" ); |
| 39 | |
| 40 | #include <sys/param.h> |
| 41 | #include <sys/buf.h> |
| 42 | #include <sys/bufq.h> |
| 43 | #include <sys/conf.h> |
| 44 | #include <sys/device.h> |
| 45 | #include <sys/disk.h> |
| 46 | #include <sys/disklabel.h> |
| 47 | #include <sys/fcntl.h> |
| 48 | #include <sys/malloc.h> |
| 49 | #include <sys/vnode.h> |
| 50 | #include <sys/kauth.h> |
| 51 | |
| 52 | #include <miscfs/specfs/specdev.h> |
| 53 | |
| 54 | #include <dev/ata/atareg.h> |
| 55 | #include <dev/ata/atavar.h> |
| 56 | #include <dev/ata/wdvar.h> |
| 57 | |
| 58 | #include <dev/ata/ata_raidreg.h> |
| 59 | #include <dev/ata/ata_raidvar.h> |
| 60 | |
| 61 | #ifdef ATA_RAID_DEBUG |
| 62 | #define DPRINTF(x) printf x |
| 63 | #else |
| 64 | #define DPRINTF(x) /* nothing */ |
| 65 | #endif |
| 66 | |
| 67 | int |
| 68 | ata_raid_read_config_promise(struct wd_softc *sc) |
| 69 | { |
| 70 | struct promise_raid_conf *info; |
| 71 | struct vnode *vp; |
| 72 | int bmajor, error, count; |
| 73 | u_int disk; |
| 74 | dev_t dev; |
| 75 | uint32_t cksum, *ckptr; |
| 76 | struct ataraid_array_info *aai; |
| 77 | struct ataraid_disk_info *adi; |
| 78 | |
| 79 | info = malloc(sizeof(*info), M_DEVBUF, M_WAITOK); |
| 80 | |
| 81 | bmajor = devsw_name2blk(device_xname(sc->sc_dev), NULL, 0); |
| 82 | |
| 83 | /* Get a vnode for the raw partition of this disk. */ |
| 84 | dev = MAKEDISKDEV(bmajor, device_unit(sc->sc_dev), RAW_PART); |
| 85 | error = bdevvp(dev, &vp); |
| 86 | if (error) |
| 87 | goto out; |
| 88 | |
| 89 | error = VOP_OPEN(vp, FREAD, NOCRED); |
| 90 | if (error) { |
| 91 | vput(vp); |
| 92 | goto out; |
| 93 | } |
| 94 | |
| 95 | error = ata_raid_config_block_rw(vp, PR_LBA(sc), info, |
| 96 | sizeof(*info), B_READ); |
| 97 | VOP_CLOSE(vp, FREAD, NOCRED); |
| 98 | vput(vp); |
| 99 | if (error) { |
| 100 | aprint_error_dev(sc->sc_dev, |
| 101 | "error %d reading Promise config block\n" , error); |
| 102 | goto out; |
| 103 | } |
| 104 | |
| 105 | /* Check the signature. */ |
| 106 | if (strncmp(info->promise_id, PR_MAGIC, sizeof(PR_MAGIC)) != 0) { |
| 107 | DPRINTF(("%s: Promise signature check failed\n" , |
| 108 | device_xname(sc->sc_dev))); |
| 109 | error = ESRCH; |
| 110 | goto out; |
| 111 | } |
| 112 | |
| 113 | /* Verify the checksum. */ |
| 114 | for (cksum = 0, ckptr = (uint32_t *) info, count = 0; count < 511; |
| 115 | count++) |
| 116 | cksum += *ckptr++; |
| 117 | if (cksum != *ckptr) { |
| 118 | DPRINTF(("%s: Promise checksum failed\n" , |
| 119 | device_xname(sc->sc_dev))); |
| 120 | error = ESRCH; |
| 121 | goto out; |
| 122 | } |
| 123 | |
| 124 | if (info->raid.integrity != PR_I_VALID) { |
| 125 | DPRINTF(("%s: Promise config block marked invalid\n" , |
| 126 | device_xname(sc->sc_dev))); |
| 127 | error = ESRCH; |
| 128 | goto out; |
| 129 | } |
| 130 | |
| 131 | /* |
| 132 | * Lookup or allocate a new array info structure for |
| 133 | * this array. |
| 134 | */ |
| 135 | aai = ata_raid_get_array_info(ATA_RAID_TYPE_PROMISE, |
| 136 | info->raid.array_number); |
| 137 | |
| 138 | if (info->raid.generation == 0 || |
| 139 | info->raid.generation > aai->aai_generation) { |
| 140 | aai->aai_generation = info->raid.generation; |
| 141 | /* aai_type and aai_arrayno filled in already */ |
| 142 | if ((info->raid.status & |
| 143 | (PR_S_VALID | PR_S_ONLINE | PR_S_INITED | PR_S_READY)) == |
| 144 | (PR_S_VALID | PR_S_ONLINE | PR_S_INITED | PR_S_READY)) { |
| 145 | aai->aai_status |= AAI_S_READY; |
| 146 | if (info->raid.status & PR_S_DEGRADED) |
| 147 | aai->aai_status |= AAI_S_DEGRADED; |
| 148 | } else |
| 149 | aai->aai_status &= ~AAI_S_READY; |
| 150 | |
| 151 | switch (info->raid.type) { |
| 152 | case PR_T_RAID0: |
| 153 | aai->aai_level = AAI_L_RAID0; |
| 154 | break; |
| 155 | |
| 156 | case PR_T_RAID1: |
| 157 | aai->aai_level = AAI_L_RAID1; |
| 158 | if (info->raid.array_width > 1) |
| 159 | aai->aai_level |= AAI_L_RAID0; |
| 160 | break; |
| 161 | |
| 162 | case PR_T_SPAN: |
| 163 | aai->aai_level = AAI_L_SPAN; |
| 164 | break; |
| 165 | |
| 166 | default: |
| 167 | aprint_error_dev(sc->sc_dev, |
| 168 | "unknown Promise RAID type 0x%02x\n" , |
| 169 | info->raid.type); |
| 170 | error = EINVAL; |
| 171 | goto out; |
| 172 | } |
| 173 | |
| 174 | aai->aai_interleave = 1U << info->raid.stripe_shift; |
| 175 | aai->aai_width = info->raid.array_width; |
| 176 | aai->aai_ndisks = info->raid.total_disks; |
| 177 | aai->aai_heads = info->raid.heads + 1; |
| 178 | aai->aai_sectors = info->raid.sectors; |
| 179 | aai->aai_cylinders = info->raid.cylinders + 1; |
| 180 | aai->aai_capacity = info->raid.total_sectors; |
| 181 | aai->aai_offset = 0; |
| 182 | aai->aai_reserved = 63; |
| 183 | |
| 184 | for (disk = 0; disk < aai->aai_ndisks; disk++) { |
| 185 | adi = &aai->aai_disks[disk]; |
| 186 | adi->adi_status = 0; |
| 187 | if (info->raid.disk[disk].flags & PR_F_ONLINE) |
| 188 | adi->adi_status |= ADI_S_ONLINE; |
| 189 | if (info->raid.disk[disk].flags & PR_F_ASSIGNED) |
| 190 | adi->adi_status |= ADI_S_ASSIGNED; |
| 191 | if (info->raid.disk[disk].flags & PR_F_SPARE) { |
| 192 | adi->adi_status &= ~ADI_S_ONLINE; |
| 193 | adi->adi_status |= ADI_S_SPARE; |
| 194 | } |
| 195 | if (info->raid.disk[disk].flags & |
| 196 | (PR_F_REDIR | PR_F_DOWN)) |
| 197 | adi->adi_status &= ~ADI_S_ONLINE; |
| 198 | } |
| 199 | } |
| 200 | adi = &aai->aai_disks[info->raid.disk_number]; |
| 201 | if (adi->adi_status) { |
| 202 | adi->adi_dev = sc->sc_dev; |
| 203 | adi->adi_sectors = info->raid.disk_sectors; |
| 204 | adi->adi_compsize = sc->sc_capacity - aai->aai_reserved; |
| 205 | } |
| 206 | |
| 207 | error = 0; |
| 208 | |
| 209 | out: |
| 210 | free(info, M_DEVBUF); |
| 211 | return (error); |
| 212 | } |
| 213 | |