ata_raid_intel.c revision 1.4
1 /* $NetBSD: ata_raid_intel.c,v 1.4 2009/05/11 17:14:31 cegger 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 1.4 2009/05/11 17:14:31 cegger 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_intel_type(int type) 68 { 69 static char buffer[16]; 70 71 switch (type) { 72 case INTEL_T_RAID0: 73 return "RAID0"; 74 case INTEL_T_RAID1: 75 return "RAID1"; 76 case INTEL_T_RAID5: 77 return "RAID5"; 78 default: 79 sprintf(buffer, "UNKNOWN 0x%02x", type); 80 return buffer; 81 } 82 } 83 84 static void 85 ata_raid_intel_print_info(struct intel_raid_conf *info) 86 { 87 struct intel_raid_mapping *map; 88 int i, j; 89 90 printf("********* ATA Intel MatrixRAID Metadata *********\n"); 91 printf("intel_id <%.24s>\n", info->intel_id); 92 printf("version <%.6s>\n", info->version); 93 printf("checksum 0x%08x\n", info->checksum); 94 printf("config_size 0x%08x\n", info->config_size); 95 printf("config_id 0x%08x\n", info->config_id); 96 printf("generation 0x%08x\n", info->generation); 97 printf("total_disks %u\n", info->total_disks); 98 printf("total_volumes %u\n", info->total_volumes); 99 printf("DISK# serial disk sectors disk_id flags\n"); 100 for (i = 0; i < info->total_disks; i++) { 101 printf(" %d <%.16s> %u 0x%08x 0x%08x\n", 102 i, info->disk[i].serial, info->disk[i].sectors, 103 info->disk[i].id, info->disk[i].flags); 104 } 105 106 map = (struct intel_raid_mapping *)&info->disk[info->total_disks]; 107 for (j = 0; j < info->total_volumes; j++) { 108 printf("name %.16s\n", map->name); 109 printf("total_sectors %ju\n", map->total_sectors); 110 printf("state %u\n", map->state); 111 printf("reserved %u\n", map->reserved); 112 printf("offset %u\n", map->offset); 113 printf("disk_sectors %u\n", map->disk_sectors); 114 printf("stripe_count %u\n", map->stripe_count); 115 printf("stripe_sectors %u\n", map->stripe_sectors); 116 printf("status %u\n", map->status); 117 printf("type %s\n", ata_raid_intel_type(map->type)); 118 printf("total_disks %u\n", map->total_disks); 119 printf("magic[0] 0x%02x\n", map->magic[0]); 120 printf("magic[1] 0x%02x\n", map->magic[1]); 121 printf("magic[2] 0x%02x\n", map->magic[2]); 122 for (i = 0; i < map->total_disks; i++) 123 printf(" disk %d at disk_idx 0x%08x\n", 124 i, map->disk_idx[i]); 125 126 map = (struct intel_raid_mapping *) 127 &map->disk_idx[map->total_disks]; 128 } 129 printf("=================================================\n"); 130 } 131 #endif 132 133 int 134 ata_raid_read_config_intel(struct wd_softc *sc) 135 { 136 struct intel_raid_conf *info; 137 struct intel_raid_mapping *map; 138 struct ataraid_array_info *aai; 139 struct ataraid_disk_info *adi; 140 struct vnode *vp; 141 uint32_t checksum, *ptr; 142 static int curdrive; 143 int bmajor, count, curvol = 0, error = 0; 144 char *tmp; 145 dev_t dev; 146 147 info = malloc(1536, M_DEVBUF, M_WAITOK|M_ZERO); 148 149 bmajor = devsw_name2blk(device_xname(sc->sc_dev), NULL, 0); 150 151 /* Get a vnode for the raw partition of this disk. */ 152 dev = MAKEDISKDEV(bmajor, device_unit(sc->sc_dev), RAW_PART); 153 error = bdevvp(dev, &vp); 154 if (error) 155 goto out; 156 157 error = VOP_OPEN(vp, FREAD, NOCRED); 158 if (error) { 159 vput(vp); 160 goto out; 161 } 162 163 error = ata_raid_config_block_rw(vp, INTEL_LBA(sc), info, 164 1024, B_READ); 165 VOP_CLOSE(vp, FREAD, NOCRED); 166 vput(vp); 167 if (error) { 168 DPRINTF(("%s: error %d reading Intel MatrixRAID config block\n", 169 device_xname(sc->sc_dev), error)); 170 goto out; 171 } 172 173 tmp = (char *)info; 174 (void)memcpy(tmp + 1024, tmp, 512); 175 (void)memcpy(tmp, tmp + 512, 1024); 176 (void)memset(tmp + 1024, 0, 512); 177 178 /* Check if this is a Intel RAID struct */ 179 if (strncmp(info->intel_id, INTEL_MAGIC, strlen(INTEL_MAGIC))) { 180 DPRINTF(("%s: Intel MatrixRAID signature check failed\n", 181 device_xname(sc->sc_dev))); 182 error = ESRCH; 183 goto out; 184 } 185 186 /* calculate checksum and compare for valid */ 187 for (checksum = 0, ptr = (uint32_t *)info, count = 0; 188 count < (info->config_size / sizeof(uint32_t)); count++) 189 checksum += *ptr++; 190 191 checksum -= info->checksum; 192 if (checksum != info->checksum) { 193 DPRINTF(("%s: Intel MatrixRAID checksum failed 0x%x != 0x%x\n", 194 device_xname(sc->sc_dev), checksum, info->checksum)); 195 error = ESRCH; 196 goto out; 197 } 198 199 #ifdef ATA_RAID_DEBUG 200 ata_raid_intel_print_info(info); 201 #endif 202 203 /* This one points to the first volume */ 204 map = (struct intel_raid_mapping *)&info->disk[info->total_disks]; 205 206 findvol: 207 /* 208 * Lookup or allocate a new array info structure for this array. 209 */ 210 aai = ata_raid_get_array_info(ATA_RAID_TYPE_INTEL, curvol); 211 212 /* Fill in array info */ 213 aai->aai_generation = info->generation; 214 aai->aai_status = AAI_S_READY; 215 216 switch (map->type) { 217 case INTEL_T_RAID0: 218 aai->aai_level = AAI_L_RAID0; 219 aai->aai_width = map->total_disks; 220 break; 221 case INTEL_T_RAID1: 222 aai->aai_level = AAI_L_RAID1; 223 aai->aai_width = 1; 224 break; 225 default: 226 DPRINTF(("%s: unknown Intel MatrixRAID type 0x%02x\n", 227 device_xname(sc->sc_dev), map->type)); 228 error = EINVAL; 229 goto out; 230 } 231 232 switch (map->state) { 233 case INTEL_S_DEGRADED: 234 aai->aai_status |= AAI_S_DEGRADED; 235 break; 236 case INTEL_S_DISABLED: 237 case INTEL_S_FAILURE: 238 aai->aai_status &= ~AAI_S_READY; 239 break; 240 } 241 242 aai->aai_type = ATA_RAID_TYPE_INTEL; 243 aai->aai_capacity = map->total_sectors; 244 aai->aai_interleave = map->stripe_sectors / 2; 245 aai->aai_ndisks = map->total_disks; 246 aai->aai_heads = 255; 247 aai->aai_sectors = 63; 248 aai->aai_cylinders = 249 aai->aai_capacity / (aai->aai_heads * aai->aai_sectors); 250 aai->aai_offset = map->offset; 251 aai->aai_reserved = 3; 252 if (map->name) 253 strlcpy(aai->aai_name, map->name, sizeof(aai->aai_name)); 254 255 /* Fill in disk info */ 256 adi = &aai->aai_disks[curdrive]; 257 adi->adi_status = 0; 258 259 if (info->disk[curdrive].flags & INTEL_F_ONLINE) 260 adi->adi_status |= ADI_S_ONLINE; 261 if (info->disk[curdrive].flags & INTEL_F_ASSIGNED) 262 adi->adi_status |= ADI_S_ASSIGNED; 263 if (info->disk[curdrive].flags & INTEL_F_SPARE) { 264 adi->adi_status &= ~ADI_S_ONLINE; 265 adi->adi_status |= ADI_S_SPARE; 266 } 267 if (info->disk[curdrive].flags & INTEL_F_DOWN) 268 adi->adi_status &= ~ADI_S_ONLINE; 269 270 if (adi->adi_status) { 271 adi->adi_dev = sc->sc_dev; 272 adi->adi_sectors = info->disk[curdrive].sectors; 273 adi->adi_compsize = adi->adi_sectors - aai->aai_reserved; 274 /* 275 * Check if that is the only volume, otherwise repeat 276 * the process to find more. 277 */ 278 if ((curvol + 1) < info->total_volumes) { 279 curvol++; 280 map = (struct intel_raid_mapping *) 281 &map->disk_idx[map->total_disks]; 282 goto findvol; 283 } 284 curdrive++; 285 } 286 287 out: 288 free(info, M_DEVBUF); 289 return error; 290 } 291
Indexes created Wed Sep 24 05:09:52 GMT 2025