1 /*- 2 * Copyright (c) 2000 Michael Smith 3 * Copyright (c) 2001 Scott Long 4 * Copyright (c) 2000 BSDi 5 * Copyright (c) 2001 Adaptec, Inc. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 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 AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include "opt_aac.h" 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/module.h> 39 40 #include <sys/bus.h> 41 #include <sys/conf.h> 42 #include <sys/disk.h> 43 44 #include <vm/vm.h> 45 #include <vm/pmap.h> 46 47 #include <machine/md_var.h> 48 #include <machine/bus.h> 49 #include <sys/rman.h> 50 51 #include <dev/aac/aacreg.h> 52 #include <sys/aac_ioctl.h> 53 #include <dev/aac/aacvar.h> 54 55 /* 56 * Interface to parent. 57 */ 58 static int aac_disk_probe(device_t dev); 59 static int aac_disk_attach(device_t dev); 60 static int aac_disk_detach(device_t dev); 61 62 /* 63 * Interface to the device switch. 64 */ 65 static disk_open_t aac_disk_open; 66 static disk_close_t aac_disk_close; 67 static disk_strategy_t aac_disk_strategy; 68 static dumper_t aac_disk_dump; 69 70 static devclass_t aac_disk_devclass; 71 72 static device_method_t aac_disk_methods[] = { 73 DEVMETHOD(device_probe, aac_disk_probe), 74 DEVMETHOD(device_attach, aac_disk_attach), 75 DEVMETHOD(device_detach, aac_disk_detach), 76 { 0, 0 } 77 }; 78 79 static driver_t aac_disk_driver = { 80 "aacd", 81 aac_disk_methods, 82 sizeof(struct aac_disk) 83 }; 84 85 DRIVER_MODULE(aacd, aac, aac_disk_driver, aac_disk_devclass, 0, 0); 86 87 /* 88 * Handle open from generic layer. 89 * 90 * This is called by the diskslice code on first open in order to get the 91 * basic device geometry paramters. 92 */ 93 static int 94 aac_disk_open(struct disk *dp) 95 { 96 struct aac_disk *sc; 97 98 fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, ""); 99 100 sc = (struct aac_disk *)dp->d_drv1; 101 102 if (sc == NULL) { 103 printf("aac_disk_open: No Softc\n"); 104 return (ENXIO); 105 } 106 107 /* check that the controller is up and running */ 108 if (sc->ad_controller->aac_state & AAC_STATE_SUSPEND) { 109 device_printf(sc->ad_controller->aac_dev, 110 "Controller Suspended controller state = 0x%x\n", 111 sc->ad_controller->aac_state); 112 return(ENXIO); 113 } 114 115 sc->ad_flags |= AAC_DISK_OPEN; 116 return (0); 117 } 118 119 /* 120 * Handle last close of the disk device. 121 */ 122 static int 123 aac_disk_close(struct disk *dp) 124 { 125 struct aac_disk *sc; 126 127 fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, ""); 128 129 sc = (struct aac_disk *)dp->d_drv1; 130 131 if (sc == NULL) 132 return (ENXIO); 133 134 sc->ad_flags &= ~AAC_DISK_OPEN; 135 return (0); 136 } 137 138 /* 139 * Handle an I/O request. 140 */ 141 static void 142 aac_disk_strategy(struct bio *bp) 143 { 144 struct aac_disk *sc; 145 146 sc = (struct aac_disk *)bp->bio_disk->d_drv1; 147 fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, ""); 148 149 /* bogus disk? */ 150 if (sc == NULL) { 151 bp->bio_flags |= BIO_ERROR; 152 bp->bio_error = EINVAL; 153 biodone(bp); 154 return; 155 } 156 157 /* do-nothing operation? */ 158 if (bp->bio_bcount == 0) { 159 bp->bio_resid = bp->bio_bcount; 160 biodone(bp); 161 return; 162 } 163 164 /* perform accounting */ 165 166 /* pass the bio to the controller - it can work out who we are */ 167 mtx_lock(&sc->ad_controller->aac_io_lock); 168 aac_submit_bio(bp); 169 mtx_unlock(&sc->ad_controller->aac_io_lock); 170 171 return; 172 } 173 174 /* 175 * Map the S/G elements for doing a dump. 176 */ 177 static void 178 aac_dump_map_sg(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 179 { 180 struct aac_fib *fib; 181 struct aac_blockwrite *bw; 182 struct aac_sg_table *sg; 183 int i; 184 185 fib = (struct aac_fib *)arg; 186 bw = (struct aac_blockwrite *)&fib->data[0]; 187 sg = &bw->SgMap; 188 189 if (sg != NULL) { 190 sg->SgCount = nsegs; 191 for (i = 0; i < nsegs; i++) { 192 if (segs[i].ds_addr >= BUS_SPACE_MAXADDR_32BIT) 193 return; 194 sg->SgEntry[i].SgAddress = segs[i].ds_addr; 195 sg->SgEntry[i].SgByteCount = segs[i].ds_len; 196 } 197 fib->Header.Size = nsegs * sizeof(struct aac_sg_entry); 198 } 199 } 200 201 /* 202 * Map the S/G elements for doing a dump on 64-bit capable devices. 203 */ 204 static void 205 aac_dump_map_sg64(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 206 { 207 struct aac_fib *fib; 208 struct aac_blockwrite64 *bw; 209 struct aac_sg_table64 *sg; 210 int i; 211 212 fib = (struct aac_fib *)arg; 213 bw = (struct aac_blockwrite64 *)&fib->data[0]; 214 sg = &bw->SgMap64; 215 216 if (sg != NULL) { 217 sg->SgCount = nsegs; 218 for (i = 0; i < nsegs; i++) { 219 sg->SgEntry64[i].SgAddress = segs[i].ds_addr; 220 sg->SgEntry64[i].SgByteCount = segs[i].ds_len; 221 } 222 fib->Header.Size = nsegs * sizeof(struct aac_sg_entry64); 223 } 224 } 225 226 /* 227 * Dump memory out to an array 228 * 229 * Send out one command at a time with up to maxio of data. 230 */ 231 static int 232 aac_disk_dump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length) 233 { 234 struct aac_disk *ad; 235 struct aac_softc *sc; 236 struct aac_fib *fib; 237 size_t len, maxio; 238 int size; 239 static bus_dmamap_t dump_datamap; 240 static int first = 0; 241 struct disk *dp; 242 bus_dmamap_callback_t *callback; 243 u_int32_t command; 244 245 dp = arg; 246 ad = dp->d_drv1; 247 248 if (ad == NULL) 249 return (EINVAL); 250 251 sc= ad->ad_controller; 252 253 if (!first) { 254 first = 1; 255 if (bus_dmamap_create(sc->aac_buffer_dmat, 0, &dump_datamap)) { 256 device_printf(sc->aac_dev, 257 "bus_dmamap_create failed\n"); 258 return (ENOMEM); 259 } 260 } 261 262 /* Skip aac_alloc_sync_fib(). We don't want to mess with sleep locks */ 263 fib = &sc->aac_common->ac_sync_fib; 264 265 while (length > 0) { 266 maxio = sc->aac_max_sectors << 9; 267 len = (length > maxio) ? maxio : length; 268 if ((sc->flags & AAC_FLAGS_SG_64BIT) == 0) { 269 struct aac_blockwrite *bw; 270 bw = (struct aac_blockwrite *)&fib->data[0]; 271 bw->Command = VM_CtBlockWrite; 272 bw->ContainerId = ad->ad_container->co_mntobj.ObjectId; 273 bw->BlockNumber = offset / AAC_BLOCK_SIZE; 274 bw->ByteCount = len; 275 bw->Stable = CUNSTABLE; 276 command = ContainerCommand; 277 callback = aac_dump_map_sg; 278 size = sizeof(struct aac_blockwrite); 279 } else { 280 struct aac_blockwrite64 *bw; 281 bw = (struct aac_blockwrite64 *)&fib->data[0]; 282 bw->Command = VM_CtHostWrite64; 283 bw->ContainerId = ad->ad_container->co_mntobj.ObjectId; 284 bw->BlockNumber = offset / AAC_BLOCK_SIZE; 285 bw->SectorCount = len / AAC_BLOCK_SIZE; 286 bw->Pad = 0; 287 bw->Flags = 0; 288 command = ContainerCommand64; 289 callback = aac_dump_map_sg64; 290 size = sizeof(struct aac_blockwrite64); 291 } 292 293 /* 294 * There really isn't any way to recover from errors or 295 * resource shortages here. Oh well. Because of that, don't 296 * bother trying to send the command from the callback; there 297 * is too much required context. 298 */ 299 if (bus_dmamap_load(sc->aac_buffer_dmat, dump_datamap, virtual, 300 len, callback, fib, BUS_DMA_NOWAIT) != 0) 301 return (ENOMEM); 302 303 bus_dmamap_sync(sc->aac_buffer_dmat, dump_datamap, 304 BUS_DMASYNC_PREWRITE); 305 306 /* fib->Header.Size is set in aac_dump_map_sg */ 307 size += fib->Header.Size; 308 309 if (aac_sync_fib(sc, command, 0, fib, size)) { 310 device_printf(sc->aac_dev, 311 "Error dumping block 0x%jx\n", 312 (uintmax_t)physical); 313 return (EIO); 314 } 315 316 bus_dmamap_sync(sc->aac_buffer_dmat, dump_datamap, 317 BUS_DMASYNC_POSTWRITE); 318 319 bus_dmamap_unload(sc->aac_buffer_dmat, dump_datamap); 320 321 length -= len; 322 offset += len; 323 virtual = (uint8_t *)virtual + len; 324 } 325 326 return (0); 327 } 328 329 /* 330 * Handle completion of an I/O request. 331 */ 332 void 333 aac_biodone(struct bio *bp) 334 { 335 struct aac_disk *sc; 336 337 sc = (struct aac_disk *)bp->bio_disk->d_drv1; 338 fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, ""); 339 340 if (bp->bio_flags & BIO_ERROR) 341 disk_err(bp, "hard error", -1, 1); 342 343 biodone(bp); 344 } 345 346 /* 347 * Stub only. 348 */ 349 static int 350 aac_disk_probe(device_t dev) 351 { 352 353 fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, ""); 354 355 return (0); 356 } 357 358 /* 359 * Attach a unit to the controller. 360 */ 361 static int 362 aac_disk_attach(device_t dev) 363 { 364 struct aac_disk *sc; 365 366 sc = (struct aac_disk *)device_get_softc(dev); 367 fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, ""); 368 369 /* initialise our softc */ 370 sc->ad_controller = 371 (struct aac_softc *)device_get_softc(device_get_parent(dev)); 372 sc->ad_container = device_get_ivars(dev); 373 sc->ad_dev = dev; 374 375 /* 376 * require that extended translation be enabled - other drivers read the 377 * disk! 378 */ 379 sc->ad_size = sc->ad_container->co_mntobj.Capacity; 380 if (sc->ad_controller->flags & AAC_FLAGS_LBA_64BIT) 381 sc->ad_size += (u_int64_t) 382 sc->ad_container->co_mntobj.CapacityHigh << 32; 383 if (sc->ad_size >= (2 * 1024 * 1024)) { /* 2GB */ 384 sc->ad_heads = 255; 385 sc->ad_sectors = 63; 386 } else if (sc->ad_size >= (1 * 1024 * 1024)) { /* 1GB */ 387 sc->ad_heads = 128; 388 sc->ad_sectors = 32; 389 } else { 390 sc->ad_heads = 64; 391 sc->ad_sectors = 32; 392 } 393 sc->ad_cylinders = (sc->ad_size / (sc->ad_heads * sc->ad_sectors)); 394 395 device_printf(dev, "%juMB (%ju sectors)\n", 396 (intmax_t)sc->ad_size / ((1024 * 1024) / AAC_BLOCK_SIZE), 397 (intmax_t)sc->ad_size); 398 399 /* attach a generic disk device to ourselves */ 400 sc->unit = device_get_unit(dev); 401 sc->ad_disk = disk_alloc(); 402 sc->ad_disk->d_drv1 = sc; 403 sc->ad_disk->d_name = "aacd"; 404 sc->ad_disk->d_maxsize = sc->ad_controller->aac_max_sectors << 9; 405 sc->ad_disk->d_open = aac_disk_open; 406 sc->ad_disk->d_close = aac_disk_close; 407 sc->ad_disk->d_strategy = aac_disk_strategy; 408 sc->ad_disk->d_dump = aac_disk_dump; 409 sc->ad_disk->d_sectorsize = AAC_BLOCK_SIZE; 410 sc->ad_disk->d_mediasize = (off_t)sc->ad_size * AAC_BLOCK_SIZE; 411 sc->ad_disk->d_fwsectors = sc->ad_sectors; 412 sc->ad_disk->d_fwheads = sc->ad_heads; 413 sc->ad_disk->d_unit = sc->unit; 414 disk_create(sc->ad_disk, DISK_VERSION); 415 416 return (0); 417 } 418 419 /* 420 * Disconnect ourselves from the system. 421 */ 422 static int 423 aac_disk_detach(device_t dev) 424 { 425 struct aac_disk *sc; 426 427 sc = (struct aac_disk *)device_get_softc(dev); 428 fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, ""); 429 430 if (sc->ad_flags & AAC_DISK_OPEN) 431 return(EBUSY); 432 433 disk_destroy(sc->ad_disk); 434 435 return(0); 436 } 437