1 /* $NetBSD: ata_raid_nvidia.c,v 1.1 2008/08/20 15:00:34 tacha Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 - 2008 S�ren 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 1.1 2008/08/20 15:00:34 tacha 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 sprintf(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