| 1 | /* $NetBSD: ata_raid_nvidia.c,v 1.2 2014/03/25 16:19:13 christos Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2000 - 2008 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 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | /* |
| 30 | * Support for parsing nVIDIA MediaShield RAID controller configuration blocks. |
| 31 | * |
| 32 | * Adapted to NetBSD by Tatoku Ogaito (tacha@NetBSD.org) |
| 33 | */ |
| 34 | |
| 35 | #include <sys/cdefs.h> |
| 36 | __KERNEL_RCSID(0, "$NetBSD: ata_raid_nvidia.c,v 1.2 2014/03/25 16:19:13 christos Exp $" ); |
| 37 | |
| 38 | #include <sys/param.h> |
| 39 | #include <sys/buf.h> |
| 40 | #include <sys/bufq.h> |
| 41 | #include <sys/conf.h> |
| 42 | #include <sys/device.h> |
| 43 | #include <sys/disk.h> |
| 44 | #include <sys/disklabel.h> |
| 45 | #include <sys/fcntl.h> |
| 46 | #include <sys/malloc.h> |
| 47 | #include <sys/vnode.h> |
| 48 | #include <sys/kauth.h> |
| 49 | |
| 50 | #include <miscfs/specfs/specdev.h> |
| 51 | |
| 52 | #include <dev/ata/atareg.h> |
| 53 | #include <dev/ata/atavar.h> |
| 54 | #include <dev/ata/wdvar.h> |
| 55 | |
| 56 | #include <dev/ata/ata_raidreg.h> |
| 57 | #include <dev/ata/ata_raidvar.h> |
| 58 | |
| 59 | #ifdef ATA_RAID_DEBUG |
| 60 | #define DPRINTF(x) printf x |
| 61 | #else |
| 62 | #define DPRINTF(x) /* nothing */ |
| 63 | #endif |
| 64 | |
| 65 | #ifdef ATA_RAID_DEBUG |
| 66 | static const char * |
| 67 | ata_raid_nvidia_type(int type) |
| 68 | { |
| 69 | static char buffer[16]; |
| 70 | |
| 71 | switch (type) { |
| 72 | case NV_T_SPAN: return "SPAN" ; |
| 73 | case NV_T_RAID0: return "RAID0" ; |
| 74 | case NV_T_RAID1: return "RAID1" ; |
| 75 | case NV_T_RAID3: return "RAID3" ; |
| 76 | case NV_T_RAID5: return "RAID5" ; |
| 77 | case NV_T_RAID01: return "RAID0+1" ; |
| 78 | default: |
| 79 | snprintf(buffer, sizeof(buffer), "UNKNOWN 0x%02x" , type); |
| 80 | return buffer; |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | static void |
| 85 | ata_raid_nvidia_print_info(struct nvidia_raid_conf *info) |
| 86 | { |
| 87 | printf("******** ATA nVidia MediaShield Metadata ********\n" ); |
| 88 | printf("nvidia_id <%.8s>\n" , info->nvidia_id); |
| 89 | printf("config_size %d\n" , info->config_size); |
| 90 | printf("checksum 0x%08x\n" , info->checksum); |
| 91 | printf("version 0x%04x\n" , info->version); |
| 92 | printf("disk_number %d\n" , info->disk_number); |
| 93 | printf("dummy_0 0x%02x\n" , info->dummy_0); |
| 94 | printf("total_sectors %d\n" , info->total_sectors); |
| 95 | printf("sectors_size %d\n" , info->sector_size); |
| 96 | printf("serial %.16s\n" , info->serial); |
| 97 | printf("revision %.4s\n" , info->revision); |
| 98 | printf("dummy_1 0x%08x\n" , info->dummy_1); |
| 99 | printf("magic_0 0x%08x\n" , info->magic_0); |
| 100 | printf("magic_1 0x%016jx\n" , info->magic_1); |
| 101 | printf("magic_2 0x%016jx\n" , info->magic_2); |
| 102 | printf("flags 0x%02x\n" , info->flags); |
| 103 | printf("array_width %d\n" , info->array_width); |
| 104 | printf("total_disks %d\n" , info->total_disks); |
| 105 | printf("dummy_2 0x%02x\n" , info->dummy_2); |
| 106 | printf("type %s\n" , ata_raid_nvidia_type(info->type)); |
| 107 | printf("dummy_3 0x%04x\n" , info->dummy_3); |
| 108 | printf("stripe_sectors %d\n" , info->stripe_sectors); |
| 109 | printf("stripe_bytes %d\n" , info->stripe_bytes); |
| 110 | printf("stripe_shift %d\n" , info->stripe_shift); |
| 111 | printf("stripe_mask 0x%08x\n" , info->stripe_mask); |
| 112 | printf("stripe_sizesectors %d\n" , info->stripe_sizesectors); |
| 113 | printf("stripe_sizebytes %d\n" , info->stripe_sizebytes); |
| 114 | printf("rebuild_lba %d\n" , info->rebuild_lba); |
| 115 | printf("dummy_4 0x%08x\n" , info->dummy_4); |
| 116 | printf("dummy_5 0x%08x\n" , info->dummy_5); |
| 117 | printf("status 0x%08x\n" , info->status); |
| 118 | printf("=================================================\n" ); |
| 119 | } |
| 120 | #endif |
| 121 | |
| 122 | int |
| 123 | ata_raid_read_config_nvidia(struct wd_softc *sc) |
| 124 | { |
| 125 | struct nvidia_raid_conf *info; |
| 126 | struct vnode *vp; |
| 127 | int bmajor, error, count; |
| 128 | dev_t dev; |
| 129 | uint32_t cksum, *ckptr; |
| 130 | struct ataraid_array_info *aai; |
| 131 | struct ataraid_disk_info *adi; |
| 132 | static struct _arrayno { |
| 133 | uint64_t magic1; |
| 134 | uint64_t magic2; |
| 135 | struct _arrayno *next; |
| 136 | } arrayno = { 0, 0, NULL}, *anptr; |
| 137 | |
| 138 | info = malloc(sizeof(*info), M_DEVBUF, M_WAITOK); |
| 139 | |
| 140 | bmajor = devsw_name2blk(device_xname(sc->sc_dev), NULL, 0); |
| 141 | |
| 142 | /* Get a vnode for the raw partition of this disk. */ |
| 143 | dev = MAKEDISKDEV(bmajor, device_unit(sc->sc_dev), RAW_PART); |
| 144 | error = bdevvp(dev, &vp); |
| 145 | if (error) |
| 146 | goto out; |
| 147 | |
| 148 | error = VOP_OPEN(vp, FREAD, NOCRED); |
| 149 | if (error) { |
| 150 | vput(vp); |
| 151 | goto out; |
| 152 | } |
| 153 | |
| 154 | error = ata_raid_config_block_rw(vp, NVIDIA_LBA(sc), info, |
| 155 | sizeof(*info), B_READ); |
| 156 | VOP_CLOSE(vp, FREAD, NOCRED); |
| 157 | vput(vp); |
| 158 | if (error) { |
| 159 | aprint_error_dev(sc->sc_dev, |
| 160 | "error %d reading nVidia MediaShield config block\n" , error); |
| 161 | goto out; |
| 162 | } |
| 163 | |
| 164 | #ifdef ATA_RAID_DEBUG |
| 165 | ata_raid_nvidia_print_info(info); |
| 166 | #endif |
| 167 | |
| 168 | /* Check the signature. */ |
| 169 | if (strncmp(info->nvidia_id, NV_MAGIC, strlen(NV_MAGIC)) != 0) { |
| 170 | DPRINTF(("%s: nVidia signature check failed\n" , |
| 171 | device_xname(sc->sc_dev))); |
| 172 | error = ESRCH; |
| 173 | goto out; |
| 174 | } |
| 175 | |
| 176 | /* check if the checksum is OK */ |
| 177 | for (cksum = 0, ckptr = (uint32_t *)info, count = 0; count < info->config_size; |
| 178 | count++) |
| 179 | cksum += *ckptr++; |
| 180 | if (cksum) { |
| 181 | DPRINTF(("%s: nVidia checksum failed (0x%02x)\n" , |
| 182 | device_xname(sc->sc_dev), cksum)); |
| 183 | error = ESRCH; |
| 184 | goto out; |
| 185 | } |
| 186 | |
| 187 | /* |
| 188 | * Lookup or allocate a new array info structure for |
| 189 | * this array. Since nVidia raid information does not |
| 190 | * provides array# directory, we must count the number. |
| 191 | * The available traces are magic_1 and magic_2. |
| 192 | */ |
| 193 | for (anptr = &arrayno, count = 0; anptr->next; anptr = anptr->next, count++) { |
| 194 | if (anptr->magic1 == info->magic_1 && |
| 195 | anptr->magic2 == info->magic_2) |
| 196 | break; |
| 197 | } |
| 198 | if (anptr->next == NULL) { |
| 199 | /* new array */ |
| 200 | anptr->magic1 = info->magic_1; |
| 201 | anptr->magic2 = info->magic_2; |
| 202 | anptr->next = malloc(sizeof(arrayno), M_DEVBUF, M_WAITOK); |
| 203 | } |
| 204 | aai = ata_raid_get_array_info(ATA_RAID_TYPE_NVIDIA, count); |
| 205 | |
| 206 | aai->aai_status = AAI_S_READY; |
| 207 | if (info->status & NV_S_DEGRADED) |
| 208 | aai->aai_status |= AAI_S_DEGRADED; |
| 209 | |
| 210 | switch (info->type) { |
| 211 | case NV_T_RAID0: |
| 212 | aai->aai_level = AAI_L_RAID0; |
| 213 | break; |
| 214 | |
| 215 | case NV_T_RAID1: |
| 216 | aai->aai_level = AAI_L_RAID1; |
| 217 | break; |
| 218 | |
| 219 | case NV_T_RAID5: |
| 220 | aai->aai_level = AAI_L_RAID5; |
| 221 | break; |
| 222 | |
| 223 | case NV_T_RAID01: |
| 224 | aai->aai_level = AAI_L_RAID0 | AAI_L_RAID1; |
| 225 | break; |
| 226 | |
| 227 | case NV_T_SPAN: |
| 228 | aai->aai_level = AAI_L_SPAN; |
| 229 | break; |
| 230 | |
| 231 | default: |
| 232 | aprint_error_dev(sc->sc_dev, |
| 233 | "unknown nVidia type 0x%02x\n" , info->type); |
| 234 | error = EINVAL; |
| 235 | goto out; |
| 236 | } |
| 237 | |
| 238 | aai->aai_type = ATA_RAID_TYPE_NVIDIA; |
| 239 | aai->aai_interleave = info->stripe_sectors; |
| 240 | aai->aai_width = info->array_width; |
| 241 | |
| 242 | aai->aai_ndisks = info->total_disks; |
| 243 | aai->aai_capacity = info->total_sectors; |
| 244 | aai->aai_heads = 255; |
| 245 | aai->aai_sectors = 63; |
| 246 | aai->aai_cylinders = aai->aai_capacity / (aai->aai_heads * aai->aai_sectors); |
| 247 | aai->aai_offset = 0; |
| 248 | aai->aai_reserved = 2; |
| 249 | |
| 250 | adi = &aai->aai_disks[info->disk_number]; |
| 251 | adi->adi_dev = sc->sc_dev; |
| 252 | adi->adi_status = ADI_S_ONLINE | ADI_S_ASSIGNED; |
| 253 | adi->adi_sectors = aai->aai_capacity; |
| 254 | adi->adi_compsize = aai->aai_capacity / info->array_width; |
| 255 | |
| 256 | error = 0; |
| 257 | |
| 258 | out: |
| 259 | free(info, M_DEVBUF); |
| 260 | return (error); |
| 261 | } |
| 262 | |