1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2000 Michael Smith 5 * Copyright (c) 2001 Scott Long 6 * Copyright (c) 2000 BSDi 7 * Copyright (c) 2001 Adaptec, Inc. 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 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 device_method_t aac_disk_methods[] = { 71 DEVMETHOD(device_probe, aac_disk_probe), 72 DEVMETHOD(device_attach, aac_disk_attach), 73 DEVMETHOD(device_detach, aac_disk_detach), 74 DEVMETHOD_END 75 }; 76 77 static driver_t aac_disk_driver = { 78 "aacd", 79 aac_disk_methods, 80 sizeof(struct aac_disk) 81 }; 82 83 DRIVER_MODULE(aacd, aac, aac_disk_driver, NULL, NULL); 84 85 /* 86 * Handle open from generic layer. 87 * 88 * This is called by the diskslice code on first open in order to get the 89 * basic device geometry parameters. 90 */ 91 static int aac_disk_open(struct disk * dp)92 aac_disk_open(struct disk *dp) 93 { 94 struct aac_disk *sc; 95 96 fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, ""); 97 98 sc = (struct aac_disk *)dp->d_drv1; 99 100 if (sc == NULL) { 101 printf("aac_disk_open: No Softc\n"); 102 return (ENXIO); 103 } 104 105 /* check that the controller is up and running */ 106 if (sc->ad_controller->aac_state & AAC_STATE_SUSPEND) { 107 device_printf(sc->ad_controller->aac_dev, 108 "Controller Suspended controller state = 0x%x\n", 109 sc->ad_controller->aac_state); 110 return(ENXIO); 111 } 112 113 sc->ad_flags |= AAC_DISK_OPEN; 114 return (0); 115 } 116 117 /* 118 * Handle last close of the disk device. 119 */ 120 static int aac_disk_close(struct disk * dp)121 aac_disk_close(struct disk *dp) 122 { 123 struct aac_disk *sc; 124 125 fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, ""); 126 127 sc = (struct aac_disk *)dp->d_drv1; 128 129 if (sc == NULL) 130 return (ENXIO); 131 132 sc->ad_flags &= ~AAC_DISK_OPEN; 133 return (0); 134 } 135 136 /* 137 * Handle an I/O request. 138 */ 139 static void aac_disk_strategy(struct bio * bp)140 aac_disk_strategy(struct bio *bp) 141 { 142 struct aac_disk *sc; 143 144 sc = (struct aac_disk *)bp->bio_disk->d_drv1; 145 fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, ""); 146 147 /* bogus disk? */ 148 if (sc == NULL) { 149 bp->bio_flags |= BIO_ERROR; 150 bp->bio_error = EINVAL; 151 biodone(bp); 152 return; 153 } 154 155 /* do-nothing operation? */ 156 if (bp->bio_bcount == 0) { 157 bp->bio_resid = bp->bio_bcount; 158 biodone(bp); 159 return; 160 } 161 162 if ((bp->bio_cmd != BIO_READ) && (bp->bio_cmd != BIO_WRITE)) { 163 biofinish(bp, NULL, EOPNOTSUPP); 164 return; 165 } 166 167 /* perform accounting */ 168 169 /* pass the bio to the controller - it can work out who we are */ 170 mtx_lock(&sc->ad_controller->aac_io_lock); 171 aac_submit_bio(bp); 172 mtx_unlock(&sc->ad_controller->aac_io_lock); 173 } 174 175 /* 176 * Map the S/G elements for doing a dump. 177 */ 178 static void aac_dump_map_sg(void * arg,bus_dma_segment_t * segs,int nsegs,int error)179 aac_dump_map_sg(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 180 { 181 struct aac_fib *fib; 182 struct aac_blockwrite *bw; 183 struct aac_sg_table *sg; 184 int i; 185 186 fib = (struct aac_fib *)arg; 187 bw = (struct aac_blockwrite *)&fib->data[0]; 188 sg = &bw->SgMap; 189 190 if (sg != NULL) { 191 sg->SgCount = nsegs; 192 for (i = 0; i < nsegs; i++) { 193 if (segs[i].ds_addr >= BUS_SPACE_MAXADDR_32BIT) 194 return; 195 sg->SgEntry[i].SgAddress = segs[i].ds_addr; 196 sg->SgEntry[i].SgByteCount = segs[i].ds_len; 197 } 198 fib->Header.Size = nsegs * sizeof(struct aac_sg_entry); 199 } 200 } 201 202 /* 203 * Map the S/G elements for doing a dump on 64-bit capable devices. 204 */ 205 static void aac_dump_map_sg64(void * arg,bus_dma_segment_t * segs,int nsegs,int error)206 aac_dump_map_sg64(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 207 { 208 struct aac_fib *fib; 209 struct aac_blockwrite64 *bw; 210 struct aac_sg_table64 *sg; 211 int i; 212 213 fib = (struct aac_fib *)arg; 214 bw = (struct aac_blockwrite64 *)&fib->data[0]; 215 sg = &bw->SgMap64; 216 217 if (sg != NULL) { 218 sg->SgCount = nsegs; 219 for (i = 0; i < nsegs; i++) { 220 sg->SgEntry64[i].SgAddress = segs[i].ds_addr; 221 sg->SgEntry64[i].SgByteCount = segs[i].ds_len; 222 } 223 fib->Header.Size = nsegs * sizeof(struct aac_sg_entry64); 224 } 225 } 226 227 /* 228 * Dump memory out to an array 229 * 230 * Send out one command at a time with up to maxio of data. 231 */ 232 static int aac_disk_dump(void * arg,void * virtual,off_t offset,size_t length)233 aac_disk_dump(void *arg, void *virtual, off_t offset, size_t length) 234 { 235 struct aac_disk *ad; 236 struct aac_softc *sc; 237 struct aac_fib *fib; 238 size_t len, maxio; 239 int size; 240 static bus_dmamap_t dump_datamap; 241 static int first = 0; 242 struct disk *dp; 243 bus_dmamap_callback_t *callback; 244 u_int32_t command; 245 246 dp = arg; 247 ad = dp->d_drv1; 248 249 if (ad == NULL) 250 return (EINVAL); 251 252 sc= ad->ad_controller; 253 254 if (!first) { 255 first = 1; 256 if (bus_dmamap_create(sc->aac_buffer_dmat, 0, &dump_datamap)) { 257 device_printf(sc->aac_dev, 258 "bus_dmamap_create failed\n"); 259 return (ENOMEM); 260 } 261 } 262 263 /* Skip aac_alloc_sync_fib(). We don't want to mess with sleep locks */ 264 fib = &sc->aac_common->ac_sync_fib; 265 266 while (length > 0) { 267 maxio = sc->aac_max_sectors << 9; 268 len = (length > maxio) ? maxio : length; 269 if ((sc->flags & AAC_FLAGS_SG_64BIT) == 0) { 270 struct aac_blockwrite *bw; 271 bw = (struct aac_blockwrite *)&fib->data[0]; 272 bw->Command = VM_CtBlockWrite; 273 bw->ContainerId = ad->ad_container->co_mntobj.ObjectId; 274 bw->BlockNumber = offset / AAC_BLOCK_SIZE; 275 bw->ByteCount = len; 276 bw->Stable = CUNSTABLE; 277 command = ContainerCommand; 278 callback = aac_dump_map_sg; 279 size = sizeof(struct aac_blockwrite); 280 } else { 281 struct aac_blockwrite64 *bw; 282 bw = (struct aac_blockwrite64 *)&fib->data[0]; 283 bw->Command = VM_CtHostWrite64; 284 bw->ContainerId = ad->ad_container->co_mntobj.ObjectId; 285 bw->BlockNumber = offset / AAC_BLOCK_SIZE; 286 bw->SectorCount = len / AAC_BLOCK_SIZE; 287 bw->Pad = 0; 288 bw->Flags = 0; 289 command = ContainerCommand64; 290 callback = aac_dump_map_sg64; 291 size = sizeof(struct aac_blockwrite64); 292 } 293 294 /* 295 * There really isn't any way to recover from errors or 296 * resource shortages here. Oh well. Because of that, don't 297 * bother trying to send the command from the callback; there 298 * is too much required context. 299 */ 300 if (bus_dmamap_load(sc->aac_buffer_dmat, dump_datamap, virtual, 301 len, callback, fib, BUS_DMA_NOWAIT) != 0) 302 return (ENOMEM); 303 304 bus_dmamap_sync(sc->aac_buffer_dmat, dump_datamap, 305 BUS_DMASYNC_PREWRITE); 306 307 /* fib->Header.Size is set in aac_dump_map_sg */ 308 size += fib->Header.Size; 309 310 if (aac_sync_fib(sc, command, 0, fib, size)) { 311 device_printf(sc->aac_dev, 312 "Error dumping block to 0x%jx\n", 313 (uintmax_t)offset); 314 return (EIO); 315 } 316 317 bus_dmamap_sync(sc->aac_buffer_dmat, dump_datamap, 318 BUS_DMASYNC_POSTWRITE); 319 320 bus_dmamap_unload(sc->aac_buffer_dmat, dump_datamap); 321 322 length -= len; 323 offset += len; 324 virtual = (uint8_t *)virtual + len; 325 } 326 327 return (0); 328 } 329 330 /* 331 * Handle completion of an I/O request. 332 */ 333 void aac_biodone(struct bio * bp)334 aac_biodone(struct bio *bp) 335 { 336 fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, ""); 337 338 if (bp->bio_flags & BIO_ERROR) { 339 bp->bio_resid = bp->bio_bcount; 340 disk_err(bp, "hard error", -1, 1); 341 } 342 343 biodone(bp); 344 } 345 346 /* 347 * Stub only. 348 */ 349 static int aac_disk_probe(device_t dev)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 aac_disk_attach(device_t dev)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_flags = DISKFLAG_UNMAPPED_BIO; 404 sc->ad_disk->d_name = "aacd"; 405 sc->ad_disk->d_maxsize = sc->ad_controller->aac_max_sectors << 9; 406 sc->ad_disk->d_open = aac_disk_open; 407 sc->ad_disk->d_close = aac_disk_close; 408 sc->ad_disk->d_strategy = aac_disk_strategy; 409 sc->ad_disk->d_dump = aac_disk_dump; 410 sc->ad_disk->d_sectorsize = AAC_BLOCK_SIZE; 411 sc->ad_disk->d_mediasize = (off_t)sc->ad_size * AAC_BLOCK_SIZE; 412 sc->ad_disk->d_fwsectors = sc->ad_sectors; 413 sc->ad_disk->d_fwheads = sc->ad_heads; 414 sc->ad_disk->d_unit = sc->unit; 415 disk_create(sc->ad_disk, DISK_VERSION); 416 417 return (0); 418 } 419 420 /* 421 * Disconnect ourselves from the system. 422 */ 423 static int aac_disk_detach(device_t dev)424 aac_disk_detach(device_t dev) 425 { 426 struct aac_disk *sc; 427 428 sc = (struct aac_disk *)device_get_softc(dev); 429 fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, ""); 430 431 if (sc->ad_flags & AAC_DISK_OPEN) 432 return(EBUSY); 433 434 disk_destroy(sc->ad_disk); 435 436 return(0); 437 } 438