| 1 | /* $NetBSD: ata_raid.c,v 1.39 2016/09/27 08:05:34 pgoyette Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 2003 Wasabi Systems, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Written by Jason R. Thorpe for Wasabi Systems, Inc. |
| 8 | * |
| 9 | * Redistribution and use in source and binary forms, with or without |
| 10 | * modification, are permitted provided that the following conditions |
| 11 | * are met: |
| 12 | * 1. Redistributions of source code must retain the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer. |
| 14 | * 2. Redistributions in binary form must reproduce the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer in the |
| 16 | * documentation and/or other materials provided with the distribution. |
| 17 | * 3. All advertising materials mentioning features or use of this software |
| 18 | * must display the following acknowledgement: |
| 19 | * This product includes software developed for the NetBSD Project by |
| 20 | * Wasabi Systems, Inc. |
| 21 | * 4. The name of Wasabi Systems, Inc. may not be used to endorse |
| 22 | * or promote products derived from this software without specific prior |
| 23 | * written permission. |
| 24 | * |
| 25 | * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND |
| 26 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 27 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 28 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC |
| 29 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 32 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 33 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 34 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 35 | * POSSIBILITY OF SUCH DAMAGE. |
| 36 | */ |
| 37 | |
| 38 | /* |
| 39 | * Support for autoconfiguration of RAID sets on ATA RAID controllers. |
| 40 | */ |
| 41 | |
| 42 | #include <sys/cdefs.h> |
| 43 | __KERNEL_RCSID(0, "$NetBSD: ata_raid.c,v 1.39 2016/09/27 08:05:34 pgoyette Exp $" ); |
| 44 | |
| 45 | #include <sys/param.h> |
| 46 | #include <sys/buf.h> |
| 47 | #include <sys/bufq.h> |
| 48 | #include <sys/conf.h> |
| 49 | #include <sys/device.h> |
| 50 | #include <sys/disk.h> |
| 51 | #include <sys/disklabel.h> |
| 52 | #include <sys/fcntl.h> |
| 53 | #include <sys/malloc.h> |
| 54 | #include <sys/vnode.h> |
| 55 | #include <sys/proc.h> |
| 56 | #include <sys/module.h> |
| 57 | |
| 58 | #include <miscfs/specfs/specdev.h> |
| 59 | |
| 60 | #include <dev/ata/atareg.h> |
| 61 | #include <dev/ata/atavar.h> |
| 62 | #include <dev/ata/wdvar.h> |
| 63 | |
| 64 | #include <dev/ata/ata_raidreg.h> |
| 65 | #include <dev/ata/ata_raidvar.h> |
| 66 | |
| 67 | #include "locators.h" |
| 68 | #include "ioconf.h" |
| 69 | |
| 70 | #ifdef ATA_RAID_DEBUG |
| 71 | #define DPRINTF(x) printf x |
| 72 | #else |
| 73 | #define DPRINTF(x) /* nothing */ |
| 74 | #endif |
| 75 | |
| 76 | static int ataraid_match(device_t, cfdata_t, void *); |
| 77 | static void ataraid_attach(device_t, device_t, void *); |
| 78 | static int ataraid_rescan(device_t, const char *, const int *); |
| 79 | static int ataraid_print(void *, const char *); |
| 80 | |
| 81 | static int ata_raid_finalize(device_t); |
| 82 | |
| 83 | static int finalize_done; |
| 84 | |
| 85 | ataraid_array_info_list_t ataraid_array_info_list = |
| 86 | TAILQ_HEAD_INITIALIZER(ataraid_array_info_list); |
| 87 | u_int ataraid_array_info_count; |
| 88 | |
| 89 | CFATTACH_DECL3_NEW(ataraid, 0, |
| 90 | ataraid_match, ataraid_attach, NULL, NULL, ataraid_rescan, NULL, 0); |
| 91 | |
| 92 | /* |
| 93 | * ataraidattach: |
| 94 | * |
| 95 | * Pseudo-device attach routine. |
| 96 | */ |
| 97 | void |
| 98 | ataraidattach(int count) |
| 99 | { |
| 100 | |
| 101 | /* |
| 102 | * Register a finalizer which will be used to actually configure |
| 103 | * the logical disks configured by ataraid. |
| 104 | */ |
| 105 | finalize_done = 0; |
| 106 | if (config_finalize_register(NULL, ata_raid_finalize) != 0) |
| 107 | aprint_normal("WARNING: " |
| 108 | "unable to register ATA RAID finalizer\n" ); |
| 109 | } |
| 110 | |
| 111 | /* |
| 112 | * Use the config_finalizer to rescan for new devices, since the |
| 113 | * ld_ataraid driver might not be immediately available. |
| 114 | */ |
| 115 | |
| 116 | /* ARGSUSED */ |
| 117 | static int |
| 118 | ataraid_rescan(device_t self, const char *attr, const int *flags) |
| 119 | { |
| 120 | |
| 121 | finalize_done = 0; |
| 122 | (void)ata_raid_finalize(self); |
| 123 | |
| 124 | return 0; |
| 125 | } |
| 126 | |
| 127 | /* |
| 128 | * ata_raid_type_name: |
| 129 | * |
| 130 | * Return the type of ATA RAID. |
| 131 | */ |
| 132 | const char * |
| 133 | ata_raid_type_name(u_int type) |
| 134 | { |
| 135 | static const char *ata_raid_type_names[] = { |
| 136 | "Promise" , |
| 137 | "Adaptec" , |
| 138 | "VIA V-RAID" , |
| 139 | "nVidia" , |
| 140 | "JMicron" , |
| 141 | "Intel MatrixRAID" |
| 142 | }; |
| 143 | |
| 144 | if (type < __arraycount(ata_raid_type_names)) |
| 145 | return (ata_raid_type_names[type]); |
| 146 | |
| 147 | return (NULL); |
| 148 | } |
| 149 | |
| 150 | /* |
| 151 | * ata_raid_finalize: |
| 152 | * |
| 153 | * Autoconfiguration finalizer for ATA RAID. |
| 154 | */ |
| 155 | static int |
| 156 | ata_raid_finalize(device_t self) |
| 157 | { |
| 158 | static struct cfdata ataraid_cfdata = { |
| 159 | .cf_name = "ataraid" , |
| 160 | .cf_atname = "ataraid" , |
| 161 | .cf_unit = 0, |
| 162 | .cf_fstate = FSTATE_STAR, |
| 163 | }; |
| 164 | |
| 165 | /* |
| 166 | * Only run once for each instantiation |
| 167 | */ |
| 168 | if (finalize_done) |
| 169 | return 0; |
| 170 | finalize_done = 1; |
| 171 | |
| 172 | if (TAILQ_EMPTY(&ataraid_array_info_list)) |
| 173 | goto out; |
| 174 | |
| 175 | if (config_attach_pseudo(&ataraid_cfdata) == NULL) |
| 176 | printf("%s: unable to attach an instance\n" , |
| 177 | ataraid_cd.cd_name); |
| 178 | |
| 179 | out: |
| 180 | return (1); |
| 181 | } |
| 182 | |
| 183 | /* |
| 184 | * ataraid_match: |
| 185 | * |
| 186 | * Autoconfiguration glue: match routine. |
| 187 | */ |
| 188 | static int |
| 189 | ataraid_match(device_t parent, cfdata_t cf, void *aux) |
| 190 | { |
| 191 | |
| 192 | /* pseudo-device; always present */ |
| 193 | return (1); |
| 194 | } |
| 195 | |
| 196 | /* |
| 197 | * ataraid_attach: |
| 198 | * |
| 199 | * Autoconfiguration glue: attach routine. We attach the children. |
| 200 | */ |
| 201 | static void |
| 202 | ataraid_attach(device_t parent, device_t self, void *aux) |
| 203 | { |
| 204 | struct ataraid_array_info *aai; |
| 205 | int locs[ATARAIDCF_NLOCS]; |
| 206 | |
| 207 | /* |
| 208 | * We're a pseudo-device, so we get to announce our own |
| 209 | * presence. |
| 210 | */ |
| 211 | aprint_normal_dev(self, "found %u RAID volume%s\n" , |
| 212 | ataraid_array_info_count, |
| 213 | ataraid_array_info_count == 1 ? "" : "s" ); |
| 214 | |
| 215 | TAILQ_FOREACH(aai, &ataraid_array_info_list, aai_list) { |
| 216 | locs[ATARAIDCF_VENDTYPE] = aai->aai_type; |
| 217 | locs[ATARAIDCF_UNIT] = aai->aai_arrayno; |
| 218 | |
| 219 | config_found_sm_loc(self, "ataraid" , locs, aai, |
| 220 | ataraid_print, config_stdsubmatch); |
| 221 | } |
| 222 | } |
| 223 | |
| 224 | /* |
| 225 | * ataraid_print: |
| 226 | * |
| 227 | * Autoconfiguration glue: print routine. |
| 228 | */ |
| 229 | static int |
| 230 | ataraid_print(void *aux, const char *pnp) |
| 231 | { |
| 232 | struct ataraid_array_info *aai = aux; |
| 233 | |
| 234 | if (pnp != NULL) |
| 235 | aprint_normal("block device at %s" , pnp); |
| 236 | aprint_normal(" vendtype %d unit %d" , aai->aai_type, aai->aai_arrayno); |
| 237 | return (UNCONF); |
| 238 | } |
| 239 | |
| 240 | /* |
| 241 | * ata_raid_check_component: |
| 242 | * |
| 243 | * Check the component for a RAID configuration structure. |
| 244 | * Called via autoconfiguration callback. |
| 245 | */ |
| 246 | void |
| 247 | ata_raid_check_component(device_t self) |
| 248 | { |
| 249 | struct wd_softc *sc = device_private(self); |
| 250 | |
| 251 | if (ata_raid_read_config_adaptec(sc) == 0) |
| 252 | return; |
| 253 | if (ata_raid_read_config_promise(sc) == 0) |
| 254 | return; |
| 255 | if (ata_raid_read_config_via(sc) == 0) |
| 256 | return; |
| 257 | if (ata_raid_read_config_nvidia(sc) == 0) |
| 258 | return; |
| 259 | if (ata_raid_read_config_jmicron(sc) == 0) |
| 260 | return; |
| 261 | if (ata_raid_read_config_intel(sc) == 0) |
| 262 | return; |
| 263 | } |
| 264 | |
| 265 | struct ataraid_array_info * |
| 266 | ata_raid_get_array_info(u_int type, u_int arrayno) |
| 267 | { |
| 268 | struct ataraid_array_info *aai, *laai; |
| 269 | |
| 270 | TAILQ_FOREACH(aai, &ataraid_array_info_list, aai_list) { |
| 271 | if (aai->aai_type == type && |
| 272 | aai->aai_arrayno == arrayno) |
| 273 | goto out; |
| 274 | } |
| 275 | |
| 276 | /* Need to allocate a new one. */ |
| 277 | aai = malloc(sizeof(*aai), M_DEVBUF, M_WAITOK | M_ZERO); |
| 278 | aai->aai_type = type; |
| 279 | aai->aai_arrayno = arrayno; |
| 280 | aai->aai_curdisk = 0; |
| 281 | |
| 282 | ataraid_array_info_count++; |
| 283 | |
| 284 | /* Sort it into the list: type first, then array number. */ |
| 285 | TAILQ_FOREACH(laai, &ataraid_array_info_list, aai_list) { |
| 286 | if (aai->aai_type < laai->aai_type) { |
| 287 | TAILQ_INSERT_BEFORE(laai, aai, aai_list); |
| 288 | goto out; |
| 289 | } |
| 290 | if (aai->aai_type == laai->aai_type && |
| 291 | aai->aai_arrayno < laai->aai_arrayno) { |
| 292 | TAILQ_INSERT_BEFORE(laai, aai, aai_list); |
| 293 | goto out; |
| 294 | } |
| 295 | } |
| 296 | TAILQ_INSERT_TAIL(&ataraid_array_info_list, aai, aai_list); |
| 297 | |
| 298 | out: |
| 299 | return (aai); |
| 300 | } |
| 301 | |
| 302 | int |
| 303 | ata_raid_config_block_rw(struct vnode *vp, daddr_t blkno, void *tbuf, |
| 304 | size_t size, int bflags) |
| 305 | { |
| 306 | struct buf *bp; |
| 307 | int error; |
| 308 | |
| 309 | bp = getiobuf(vp, false); |
| 310 | bp->b_blkno = blkno; |
| 311 | bp->b_bcount = bp->b_resid = size; |
| 312 | bp->b_flags = bflags; |
| 313 | bp->b_proc = curproc; |
| 314 | bp->b_data = tbuf; |
| 315 | SET(bp->b_cflags, BC_BUSY); /* mark buffer busy */ |
| 316 | |
| 317 | VOP_STRATEGY(vp, bp); |
| 318 | error = biowait(bp); |
| 319 | |
| 320 | putiobuf(bp); |
| 321 | return (error); |
| 322 | } |
| 323 | |
| 324 | MODULE(MODULE_CLASS_DRIVER, ataraid, "" ); |
| 325 | |
| 326 | #ifdef _MODULE |
| 327 | CFDRIVER_DECL(ataraid, DV_DISK, NULL); |
| 328 | #endif |
| 329 | |
| 330 | static int |
| 331 | ataraid_modcmd(modcmd_t cmd, void *arg) |
| 332 | { |
| 333 | int error = 0; |
| 334 | |
| 335 | switch (cmd) { |
| 336 | case MODULE_CMD_INIT: |
| 337 | #ifdef _MODULE |
| 338 | error = config_cfdriver_attach(&ataraid_cd); |
| 339 | if (error) |
| 340 | break; |
| 341 | |
| 342 | error = config_cfattach_attach(ataraid_cd.cd_name, &ataraid_ca); |
| 343 | if (error) { |
| 344 | config_cfdriver_detach(&ataraid_cd); |
| 345 | aprint_error("%s: unable to register cfattach for \n" |
| 346 | "%s, error %d" , __func__, ataraid_cd.cd_name, |
| 347 | error); |
| 348 | break; |
| 349 | } |
| 350 | #endif |
| 351 | break; |
| 352 | case MODULE_CMD_FINI: |
| 353 | #ifdef _MODULE |
| 354 | |
| 355 | error = config_cfattach_detach(ataraid_cd.cd_name, &ataraid_ca); |
| 356 | if (error) { |
| 357 | aprint_error("%s: failed to detach %s cfattach, " |
| 358 | "error %d\n" , __func__, ataraid_cd.cd_name, error); |
| 359 | break; |
| 360 | } |
| 361 | error = config_cfdriver_detach(&ataraid_cd); |
| 362 | if (error) { |
| 363 | (void)config_cfattach_attach(ataraid_cd.cd_name, |
| 364 | &ataraid_ca); |
| 365 | aprint_error("%s: failed to detach %s cfdriver, " |
| 366 | "error %d\n" , __func__, ataraid_cd.cd_name, error); |
| 367 | break; |
| 368 | } |
| 369 | #endif |
| 370 | break; |
| 371 | case MODULE_CMD_STAT: |
| 372 | default: |
| 373 | error = ENOTTY; |
| 374 | } |
| 375 | |
| 376 | return error; |
| 377 | } |
| 378 | |