ata_raid_intel.c revision 1.7
1 /* $NetBSD: ata_raid_intel.c,v 1.7 2014/03/25 16:19:13 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2000-2008 Sren Schmidt <sos (at) 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 Intel MatrixRAID controller configuration blocks. 31 * 32 * Adapted to NetBSD by Juan Romero Pardines (xtraeme (at) gmail.org). 33 */ 34 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: ata_raid_intel.c,v 1.7 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 static int find_volume_id(struct intel_raid_conf *); 66 67 68 #ifdef ATA_RAID_DEBUG 69 static const char * 70 ata_raid_intel_type(int type) 71 { 72 static char buffer[16]; 73 74 switch (type) { 75 case INTEL_T_RAID0: 76 return "RAID0"; 77 case INTEL_T_RAID1: 78 return "RAID1"; 79 case INTEL_T_RAID5: 80 return "RAID5"; 81 default: 82 snprintf(buffer, sizeof(buffer), "UNKNOWN 0x%02x", type); 83 return buffer; 84 } 85 } 86 87 static void 88 ata_raid_intel_print_info(struct intel_raid_conf *info) 89 { 90 struct intel_raid_mapping *map; 91 int i, j; 92 93 printf("********* ATA Intel MatrixRAID Metadata *********\n"); 94 printf("intel_id <%.24s>\n", info->intel_id); 95 printf("version <%.6s>\n", info->version); 96 printf("checksum 0x%08x\n", info->checksum); 97 printf("config_size 0x%08x\n", info->config_size); 98 printf("config_id 0x%08x\n", info->config_id); 99 printf("generation 0x%08x\n", info->generation); 100 printf("total_disks %u\n", info->total_disks); 101 printf("total_volumes %u\n", info->total_volumes); 102 printf("DISK# serial disk sectors disk_id flags\n"); 103 for (i = 0; i < info->total_disks; i++) { 104 printf(" %d <%.16s> %u 0x%08x 0x%08x\n", 105 i, info->disk[i].serial, info->disk[i].sectors, 106 info->disk[i].id, info->disk[i].flags); 107 } 108 109 map = (struct intel_raid_mapping *)&info->disk[info->total_disks]; 110 for (j = 0; j < info->total_volumes; j++) { 111 printf("name %.16s\n", map->name); 112 printf("total_sectors %ju\n", map->total_sectors); 113 printf("state %u\n", map->state); 114 printf("reserved %u\n", map->reserved); 115 printf("offset %u\n", map->offset); 116 printf("disk_sectors %u\n", map->disk_sectors); 117 printf("stripe_count %u\n", map->stripe_count); 118 printf("stripe_sectors %u\n", map->stripe_sectors); 119 printf("status %u\n", map->status); 120 printf("type %s\n", ata_raid_intel_type(map->type)); 121 printf("total_disks %u\n", map->total_disks); 122 printf("magic[0] 0x%02x\n", map->magic[0]); 123 printf("magic[1] 0x%02x\n", map->magic[1]); 124 printf("magic[2] 0x%02x\n", map->magic[2]); 125 for (i = 0; i < map->total_disks; i++) 126 printf(" disk %d at disk_idx 0x%08x\n", 127 i, map->disk_idx[i]); 128 129 map = (struct intel_raid_mapping *) 130 &map->disk_idx[map->total_disks]; 131 } 132 printf("=================================================\n"); 133 } 134 #endif 135 136 int 137 ata_raid_read_config_intel(struct wd_softc *sc) 138 { 139 struct intel_raid_conf *info; 140 struct intel_raid_mapping *map; 141 struct ataraid_array_info *aai; 142 struct ataraid_disk_info *adi; 143 struct vnode *vp; 144 uint32_t checksum, *ptr; 145 int bmajor, count, curvol = 0, error = 0; 146 char *tmp; 147 dev_t dev; 148 int volumeid, diskidx; 149 150 info = malloc(1536, M_DEVBUF, M_WAITOK|M_ZERO); 151 152 bmajor = devsw_name2blk(device_xname(sc->sc_dev), NULL, 0); 153 154 /* Get a vnode for the raw partition of this disk. */ 155 dev = MAKEDISKDEV(bmajor, device_unit(sc->sc_dev), RAW_PART); 156 error = bdevvp(dev, &vp); 157 if (error) 158 goto out; 159 160 error = VOP_OPEN(vp, FREAD, NOCRED); 161 if (error) { 162 vput(vp); 163 goto out; 164 } 165 166 error = ata_raid_config_block_rw(vp, INTEL_LBA(sc), info, 167 1024, B_READ); 168 VOP_CLOSE(vp, FREAD, NOCRED); 169 vput(vp); 170 if (error) { 171 DPRINTF(("%s: error %d reading Intel MatrixRAID config block\n", 172 device_xname(sc->sc_dev), error)); 173 goto out; 174 } 175 176 tmp = (char *)info; 177 (void)memcpy(tmp + 1024, tmp, 512); 178 (void)memcpy(tmp, tmp + 512, 1024); 179 (void)memset(tmp + 1024, 0, 512); 180 181 /* Check if this is a Intel RAID struct */ 182 if (strncmp(info->intel_id, INTEL_MAGIC, strlen(INTEL_MAGIC))) { 183 DPRINTF(("%s: Intel MatrixRAID signature check failed\n", 184 device_xname(sc->sc_dev))); 185 error = ESRCH; 186 goto out; 187 } 188 189 /* calculate checksum and compare for valid */ 190 for (checksum = 0, ptr = (uint32_t *)info, count = 0; 191 count < (info->config_size / sizeof(uint32_t)); count++) 192 checksum += *ptr++; 193 194 checksum -= info->checksum; 195 if (checksum != info->checksum) { 196 DPRINTF(("%s: Intel MatrixRAID checksum failed 0x%x != 0x%x\n", 197 device_xname(sc->sc_dev), checksum, info->checksum)); 198 error = ESRCH; 199 goto out; 200 } 201 202 #ifdef ATA_RAID_DEBUG 203 ata_raid_intel_print_info(info); 204 #endif 205 206 /* This one points to the first volume */ 207 map = (struct intel_raid_mapping *)&info->disk[info->total_disks]; 208 209 volumeid = find_volume_id(info); 210 if (volumeid < 0) { 211 aprint_error_dev(sc->sc_dev, 212 "too many RAID arrays\n"); 213 error = ENOMEM; 214 goto out; 215 } 216 217 findvol: 218 /* 219 * Lookup or allocate a new array info structure for this array. 220 */ 221 aai = ata_raid_get_array_info(ATA_RAID_TYPE_INTEL, volumeid + curvol); 222 223 /* Fill in array info */ 224 aai->aai_generation = info->generation; 225 aai->aai_status = AAI_S_READY; 226 227 switch (map->type) { 228 case INTEL_T_RAID0: 229 aai->aai_level = AAI_L_RAID0; 230 aai->aai_width = map->total_disks; 231 break; 232 case INTEL_T_RAID1: 233 aai->aai_level = AAI_L_RAID1; 234 aai->aai_width = 1; 235 break; 236 default: 237 DPRINTF(("%s: unknown Intel MatrixRAID type 0x%02x\n", 238 device_xname(sc->sc_dev), map->type)); 239 error = EINVAL; 240 goto out; 241 } 242 243 switch (map->state) { 244 case INTEL_S_DEGRADED: 245 aai->aai_status |= AAI_S_DEGRADED; 246 break; 247 case INTEL_S_DISABLED: 248 case INTEL_S_FAILURE: 249 aai->aai_status &= ~AAI_S_READY; 250 break; 251 } 252 253 aai->aai_type = ATA_RAID_TYPE_INTEL; 254 aai->aai_capacity = map->total_sectors; 255 aai->aai_interleave = map->stripe_sectors; 256 aai->aai_ndisks = map->total_disks; 257 aai->aai_heads = 255; 258 aai->aai_sectors = 63; 259 aai->aai_cylinders = 260 aai->aai_capacity / (aai->aai_heads * aai->aai_sectors); 261 aai->aai_offset = map->offset; 262 aai->aai_reserved = 3; 263 if (map->name) 264 strlcpy(aai->aai_name, map->name, sizeof(aai->aai_name)); 265 266 /* Fill in disk info */ 267 diskidx = aai->aai_curdisk++; 268 adi = &aai->aai_disks[diskidx]; 269 adi->adi_status = 0; 270 271 if (info->disk[diskidx].flags & INTEL_F_ONLINE) 272 adi->adi_status |= ADI_S_ONLINE; 273 if (info->disk[diskidx].flags & INTEL_F_ASSIGNED) 274 adi->adi_status |= ADI_S_ASSIGNED; 275 if (info->disk[diskidx].flags & INTEL_F_SPARE) { 276 adi->adi_status &= ~ADI_S_ONLINE; 277 adi->adi_status |= ADI_S_SPARE; 278 } 279 if (info->disk[diskidx].flags & INTEL_F_DOWN) 280 adi->adi_status &= ~ADI_S_ONLINE; 281 282 if (adi->adi_status) { 283 adi->adi_dev = sc->sc_dev; 284 adi->adi_sectors = info->disk[diskidx].sectors; 285 adi->adi_compsize = adi->adi_sectors - aai->aai_reserved; 286 287 /* 288 * Check if that is the only volume, otherwise repeat 289 * the process to find more. 290 */ 291 if ((curvol + 1) < info->total_volumes) { 292 curvol++; 293 map = (struct intel_raid_mapping *) 294 &map->disk_idx[map->total_disks]; 295 goto findvol; 296 } 297 } 298 299 out: 300 free(info, M_DEVBUF); 301 return error; 302 } 303 304 305 /* 306 * Assign `volume id' to RAID volumes. 307 */ 308 static struct { 309 /* We assume disks are on the same array if these three values 310 are same. */ 311 uint32_t config_id; 312 uint32_t generation; 313 uint32_t checksum; 314 315 int id; 316 } array_note[10]; /* XXX: this array is not used after ld_ataraid is 317 * configured. */ 318 319 static int n_array = 0; 320 static int volume_id = 0; 321 322 static int 323 find_volume_id(struct intel_raid_conf *info) 324 { 325 int i, ret; 326 327 for (i=0; i < n_array; ++i) { 328 if (info->checksum == array_note[i].checksum && 329 info->config_id == array_note[i].config_id && 330 info->generation == array_note[i].generation) { 331 /* we have already seen this array */ 332 return array_note[i].id; 333 } 334 } 335 336 if (n_array >= __arraycount(array_note)) { 337 /* Too many arrays */ 338 return -1; 339 } 340 341 array_note[n_array].checksum = info->checksum; 342 array_note[n_array].config_id = info->config_id; 343 array_note[n_array].generation = info->generation; 344 array_note[n_array].id = ret = volume_id; 345 346 /* Allocate volume ids for all volumes in this array */ 347 volume_id += info->total_volumes; 348 ++n_array; 349 return ret; 350 } 351
Indexes created Tue Sep 23 14:10:03 GMT 2025