1 /*- 2 * Copyright (c) 1998 - 2006 S�ren Schmidt <sos@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer, 10 * without modification, immediately at the beginning of the file. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD: src/sys/dev/ata/ata-all.c,v 1.273 2006/05/12 05:04:40 jhb Exp $ 27 * $DragonFly: src/sys/dev/disk/nata/ata-all.c,v 1.8 2007/05/01 00:05:17 dillon Exp $ 28 */ 29 30 #include "opt_ata.h" 31 32 #include <sys/param.h> 33 #include <sys/bus.h> 34 #include <sys/callout.h> 35 #include <sys/conf.h> 36 #include <sys/ctype.h> 37 #include <sys/device.h> 38 #include <sys/endian.h> 39 #include <sys/kernel.h> 40 #include <sys/libkern.h> 41 #include <sys/lock.h> /* for {get,rel}_mplock() */ 42 #include <sys/malloc.h> 43 #include <sys/module.h> 44 #include <sys/nata.h> 45 #include <sys/objcache.h> 46 #include <sys/queue.h> 47 #include <sys/spinlock2.h> 48 #include <sys/sysctl.h> 49 #include <sys/systm.h> 50 51 #include "ata-all.h" 52 #include "ata_if.h" 53 54 /* device structure */ 55 static d_ioctl_t ata_ioctl; 56 static struct dev_ops ata_ops = { 57 { "ata", 159, 0 }, 58 .d_open = nullopen, 59 .d_close = nullclose, 60 .d_ioctl = ata_ioctl, 61 }; 62 63 /* prototypes */ 64 static void ata_boot_attach(void); 65 static device_t ata_add_child(device_t, struct ata_device *, int); 66 static int ata_getparam(struct ata_device *, int); 67 static void bswap(int8_t *, int); 68 static void btrim(int8_t *, int); 69 static void bpack(int8_t *, int8_t *, int); 70 71 /* global vars */ 72 MALLOC_DEFINE(M_ATA, "ata_generic", "ATA driver generic layer"); 73 int (*ata_raid_ioctl_func)(u_long cmd, caddr_t data) = NULL; 74 devclass_t ata_devclass; 75 struct objcache *ata_request_cache; 76 struct objcache *ata_composite_cache; 77 struct objcache_malloc_args ata_request_malloc_args = { 78 sizeof(struct ata_request), M_ATA }; 79 struct objcache_malloc_args ata_composite_malloc_args = { 80 sizeof(struct ata_composite), M_ATA }; 81 int ata_wc = 1; 82 83 /* local vars */ 84 static int ata_dma = 1; 85 static int atapi_dma = 1; 86 87 /* sysctl vars */ 88 SYSCTL_NODE(_hw, OID_AUTO, ata, CTLFLAG_RD, 0, "ATA driver parameters"); 89 TUNABLE_INT("hw.ata.ata_dma", &ata_dma); 90 SYSCTL_INT(_hw_ata, OID_AUTO, ata_dma, CTLFLAG_RW, &ata_dma, 0, 91 "ATA disk DMA mode control"); 92 TUNABLE_INT("hw.ata.atapi_dma", &atapi_dma); 93 SYSCTL_INT(_hw_ata, OID_AUTO, atapi_dma, CTLFLAG_RW, &atapi_dma, 0, 94 "ATAPI device DMA mode control"); 95 TUNABLE_INT("hw.ata.wc", &ata_wc); 96 SYSCTL_INT(_hw_ata, OID_AUTO, ata_wc, CTLFLAG_RW, &ata_wc, 0, 97 "ATA disk write caching"); 98 99 /* 100 * newbus device interface related functions 101 */ 102 int 103 ata_probe(device_t dev) 104 { 105 return 0; 106 } 107 108 int 109 ata_attach(device_t dev) 110 { 111 struct ata_channel *ch = device_get_softc(dev); 112 int error, rid; 113 114 /* check that we have a virgin channel to attach */ 115 if (ch->r_irq) 116 return EEXIST; 117 118 /* initialize the softc basics */ 119 ch->dev = dev; 120 ch->state = ATA_IDLE; 121 spin_init(&ch->state_mtx); 122 spin_init(&ch->queue_mtx); 123 TAILQ_INIT(&ch->ata_queue); 124 125 /* reset the controller HW, the channel and device(s) */ 126 while (ATA_LOCKING(dev, ATA_LF_LOCK) != ch->unit) 127 tsleep(&error, 0, "ataatch", 1); 128 ATA_RESET(dev); 129 ATA_LOCKING(dev, ATA_LF_UNLOCK); 130 131 /* setup interrupt delivery */ 132 rid = ATA_IRQ_RID; 133 ch->r_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 134 RF_SHAREABLE | RF_ACTIVE); 135 if (!ch->r_irq) { 136 device_printf(dev, "unable to allocate interrupt\n"); 137 return ENXIO; 138 } 139 if ((error = bus_setup_intr(dev, ch->r_irq, ATA_INTR_FLAGS, 140 (driver_intr_t *)ata_interrupt, ch, &ch->ih, 141 NULL))) { 142 device_printf(dev, "unable to setup interrupt\n"); 143 return error; 144 } 145 146 /* probe and attach devices on this channel unless we are in early boot */ 147 ata_identify(dev); 148 return 0; 149 } 150 151 int 152 ata_detach(device_t dev) 153 { 154 struct ata_channel *ch = device_get_softc(dev); 155 device_t *children; 156 int nchildren, i; 157 158 /* check that we have a valid channel to detach */ 159 if (!ch->r_irq) 160 return ENXIO; 161 162 /* grap the channel lock so no new requests gets launched */ 163 spin_lock_wr(&ch->state_mtx); 164 ch->state |= ATA_STALL_QUEUE; 165 spin_unlock_wr(&ch->state_mtx); 166 167 /* detach & delete all children */ 168 if (!device_get_children(dev, &children, &nchildren)) { 169 for (i = 0; i < nchildren; i++) 170 if (children[i]) 171 device_delete_child(dev, children[i]); 172 kfree(children, M_TEMP); 173 } 174 175 /* release resources */ 176 bus_teardown_intr(dev, ch->r_irq, ch->ih); 177 bus_release_resource(dev, SYS_RES_IRQ, ATA_IRQ_RID, ch->r_irq); 178 ch->r_irq = NULL; 179 spin_uninit(&ch->state_mtx); 180 spin_uninit(&ch->queue_mtx); 181 return 0; 182 } 183 184 int 185 ata_reinit(device_t dev) 186 { 187 struct ata_channel *ch = device_get_softc(dev); 188 struct ata_request *request; 189 device_t *children; 190 int nchildren, i; 191 192 /* check that we have a valid channel to reinit */ 193 if (!ch || !ch->r_irq) 194 return ENXIO; 195 196 if (bootverbose) 197 device_printf(dev, "reiniting channel ..\n"); 198 199 /* poll for locking the channel */ 200 while (ATA_LOCKING(dev, ATA_LF_LOCK) != ch->unit) 201 tsleep(&dev, 0, "atarini", 1); 202 203 /* catch eventual request in ch->running */ 204 spin_lock_wr(&ch->state_mtx); 205 if ((request = ch->running)) 206 callout_stop(&request->callout); 207 ch->running = NULL; 208 209 /* unconditionally grap the channel lock */ 210 ch->state |= ATA_STALL_QUEUE; 211 spin_unlock_wr(&ch->state_mtx); 212 213 /* reset the controller HW, the channel and device(s) */ 214 ATA_RESET(dev); 215 216 /* reinit the children and delete any that fails */ 217 if (!device_get_children(dev, &children, &nchildren)) { 218 get_mplock(); 219 for (i = 0; i < nchildren; i++) { 220 /* did any children go missing ? */ 221 if (children[i] && device_is_attached(children[i]) && 222 ATA_REINIT(children[i])) { 223 /* 224 * if we had a running request and its device matches 225 * this child we need to inform the request that the 226 * device is gone. 227 */ 228 if (request && request->dev == children[i]) { 229 request->result = ENXIO; 230 device_printf(request->dev, "FAILURE - device detached\n"); 231 232 /* if not timeout finish request here */ 233 if (!(request->flags & ATA_R_TIMEOUT)) 234 ata_finish(request); 235 request = NULL; 236 } 237 device_delete_child(dev, children[i]); 238 } 239 } 240 kfree(children, M_TEMP); 241 rel_mplock(); 242 } 243 244 /* if we still have a good request put it on the queue again */ 245 if (request && !(request->flags & ATA_R_TIMEOUT)) { 246 device_printf(request->dev, 247 "WARNING - %s requeued due to channel reset", 248 ata_cmd2str(request)); 249 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL))) 250 kprintf(" LBA=%ju", request->u.ata.lba); 251 kprintf("\n"); 252 request->flags |= ATA_R_REQUEUE; 253 ata_queue_request(request); 254 } 255 256 /* we're done release the channel for new work */ 257 spin_lock_wr(&ch->state_mtx); 258 ch->state = ATA_IDLE; 259 spin_unlock_wr(&ch->state_mtx); 260 ATA_LOCKING(dev, ATA_LF_UNLOCK); 261 262 if (bootverbose) 263 device_printf(dev, "reinit done ..\n"); 264 265 /* kick off requests on the queue */ 266 ata_start(dev); 267 return 0; 268 } 269 270 int 271 ata_suspend(device_t dev) 272 { 273 struct ata_channel *ch; 274 275 /* check for valid device */ 276 if (!dev || !(ch = device_get_softc(dev))) 277 return ENXIO; 278 279 /* wait for the channel to be IDLE or detached before suspending */ 280 while (ch->r_irq) { 281 spin_lock_wr(&ch->state_mtx); 282 if (ch->state == ATA_IDLE) { 283 ch->state = ATA_ACTIVE; 284 spin_unlock_wr(&ch->state_mtx); 285 break; 286 } 287 spin_unlock_wr(&ch->state_mtx); 288 tsleep(ch, 0, "atasusp", hz/10); 289 } 290 ATA_LOCKING(dev, ATA_LF_UNLOCK); 291 return 0; 292 } 293 294 int 295 ata_resume(device_t dev) 296 { 297 struct ata_channel *ch; 298 int error; 299 300 /* check for valid device */ 301 if (!dev || !(ch = device_get_softc(dev))) 302 return ENXIO; 303 304 /* reinit the devices, we dont know what mode/state they are in */ 305 error = ata_reinit(dev); 306 307 /* kick off requests on the queue */ 308 ata_start(dev); 309 return error; 310 } 311 312 int 313 ata_interrupt(void *data) 314 { 315 struct ata_channel *ch = (struct ata_channel *)data; 316 struct ata_request *request; 317 318 spin_lock_wr(&ch->state_mtx); 319 do { 320 /* ignore interrupt if its not for us */ 321 if (ch->hw.status && !ch->hw.status(ch->dev)) 322 break; 323 324 /* do we have a running request */ 325 if (!(request = ch->running)) 326 break; 327 328 /* XXX TGEN Ignore weird ATAPI+DMA interrupts on SMP */ 329 if (ch->dma && (request->flags & ATA_R_ATAPI)) { 330 int status = ATA_IDX_INB(ch, ATA_STATUS); 331 int error = ATA_IDX_INB(ch, ATA_ERROR); 332 int bmstat = ATA_IDX_INB(ch, ATA_BMSTAT_PORT) & ATA_BMSTAT_MASK; 333 if (((status & (ATA_S_DWF|ATA_S_DRQ)) == (ATA_S_DWF|ATA_S_DRQ)) && 334 ((error & ATA_E_ILI) == ATA_E_ILI) && 335 !(bmstat & ATA_BMSTAT_ERROR)) { 336 if (bootverbose) 337 device_printf(request->dev, "ignoring weird interrupt\n"); 338 break; 339 } 340 } 341 342 ATA_DEBUG_RQ(request, "interrupt"); 343 344 /* safetycheck for the right state */ 345 if (ch->state == ATA_IDLE) { 346 device_printf(request->dev, "interrupt on idle channel ignored\n"); 347 break; 348 } 349 350 /* 351 * we have the HW locks, so end the transaction for this request 352 * if it finishes immediately otherwise wait for next interrupt 353 */ 354 if (ch->hw.end_transaction(request) == ATA_OP_FINISHED) { 355 ch->running = NULL; 356 if (ch->state == ATA_ACTIVE) 357 ch->state = ATA_IDLE; 358 spin_unlock_wr(&ch->state_mtx); 359 ATA_LOCKING(ch->dev, ATA_LF_UNLOCK); 360 ata_finish(request); 361 return 1; 362 } 363 } while (0); 364 spin_unlock_wr(&ch->state_mtx); 365 return 0; 366 } 367 368 /* 369 * device related interfaces 370 */ 371 static int 372 ata_ioctl(struct dev_ioctl_args *ap) 373 { 374 device_t device, *children; 375 struct ata_ioc_devices *devices = (struct ata_ioc_devices *)ap->a_data; 376 int *value = (int *)ap->a_data; 377 int i, nchildren, error = ENOTTY; 378 379 switch (ap->a_cmd) { 380 case IOCATAGMAXCHANNEL: 381 *value = devclass_get_maxunit(ata_devclass); 382 error = 0; 383 break; 384 385 case IOCATAREINIT: 386 if (*value > devclass_get_maxunit(ata_devclass) || 387 !(device = devclass_get_device(ata_devclass, *value))) 388 return ENXIO; 389 error = ata_reinit(device); 390 ata_start(device); 391 break; 392 393 case IOCATAATTACH: 394 if (*value > devclass_get_maxunit(ata_devclass) || 395 !(device = devclass_get_device(ata_devclass, *value))) 396 return ENXIO; 397 /* XXX SOS should enable channel HW on controller */ 398 error = ata_attach(device); 399 break; 400 401 case IOCATADETACH: 402 if (*value > devclass_get_maxunit(ata_devclass) || 403 !(device = devclass_get_device(ata_devclass, *value))) 404 return ENXIO; 405 error = ata_detach(device); 406 /* XXX SOS should disable channel HW on controller */ 407 break; 408 409 case IOCATADEVICES: 410 if (devices->channel > devclass_get_maxunit(ata_devclass) || 411 !(device = devclass_get_device(ata_devclass, devices->channel))) 412 return ENXIO; 413 bzero(devices->name[0], 32); 414 bzero(&devices->params[0], sizeof(struct ata_params)); 415 bzero(devices->name[1], 32); 416 bzero(&devices->params[1], sizeof(struct ata_params)); 417 if (!device_get_children(device, &children, &nchildren)) { 418 for (i = 0; i < nchildren; i++) { 419 if (children[i] && device_is_attached(children[i])) { 420 struct ata_device *atadev = device_get_softc(children[i]); 421 422 if (atadev->unit == ATA_MASTER) { 423 strncpy(devices->name[0], 424 device_get_nameunit(children[i]), 32); 425 bcopy(&atadev->param, &devices->params[0], 426 sizeof(struct ata_params)); 427 } 428 if (atadev->unit == ATA_SLAVE) { 429 strncpy(devices->name[1], 430 device_get_nameunit(children[i]), 32); 431 bcopy(&atadev->param, &devices->params[1], 432 sizeof(struct ata_params)); 433 } 434 } 435 } 436 kfree(children, M_TEMP); 437 error = 0; 438 } 439 else 440 error = ENODEV; 441 break; 442 443 default: 444 if (ata_raid_ioctl_func) 445 error = ata_raid_ioctl_func(ap->a_cmd, ap->a_data); 446 } 447 return error; 448 } 449 450 int 451 ata_device_ioctl(device_t dev, u_long cmd, caddr_t data) 452 { 453 struct ata_device *atadev = device_get_softc(dev); 454 struct ata_ioc_request *ioc_request = (struct ata_ioc_request *)data; 455 struct ata_params *params = (struct ata_params *)data; 456 int *mode = (int *)data; 457 struct ata_request *request; 458 caddr_t buf; 459 int error; 460 461 switch (cmd) { 462 case IOCATAREQUEST: 463 if (!(buf = kmalloc(ioc_request->count, M_ATA, M_NOWAIT))) { 464 return ENOMEM; 465 } 466 if (!(request = ata_alloc_request())) { 467 kfree(buf, M_ATA); 468 return ENOMEM; 469 } 470 if (ioc_request->flags & ATA_CMD_WRITE) { 471 error = copyin(ioc_request->data, buf, ioc_request->count); 472 if (error) { 473 kfree(buf, M_ATA); 474 ata_free_request(request); 475 return error; 476 } 477 } 478 request->dev = dev; 479 if (ioc_request->flags & ATA_CMD_ATAPI) { 480 request->flags = ATA_R_ATAPI; 481 bcopy(ioc_request->u.atapi.ccb, request->u.atapi.ccb, 16); 482 } 483 else { 484 request->u.ata.command = ioc_request->u.ata.command; 485 request->u.ata.feature = ioc_request->u.ata.feature; 486 request->u.ata.lba = ioc_request->u.ata.lba; 487 request->u.ata.count = ioc_request->u.ata.count; 488 } 489 request->timeout = ioc_request->timeout; 490 request->data = buf; 491 request->bytecount = ioc_request->count; 492 request->transfersize = request->bytecount; 493 if (ioc_request->flags & ATA_CMD_CONTROL) 494 request->flags |= ATA_R_CONTROL; 495 if (ioc_request->flags & ATA_CMD_READ) 496 request->flags |= ATA_R_READ; 497 if (ioc_request->flags & ATA_CMD_WRITE) 498 request->flags |= ATA_R_WRITE; 499 ata_queue_request(request); 500 if (request->flags & ATA_R_ATAPI) { 501 bcopy(&request->u.atapi.sense, &ioc_request->u.atapi.sense, 502 sizeof(struct atapi_sense)); 503 } 504 else { 505 ioc_request->u.ata.command = request->u.ata.command; 506 ioc_request->u.ata.feature = request->u.ata.feature; 507 ioc_request->u.ata.lba = request->u.ata.lba; 508 ioc_request->u.ata.count = request->u.ata.count; 509 } 510 ioc_request->error = request->result; 511 if (ioc_request->flags & ATA_CMD_READ) 512 error = copyout(buf, ioc_request->data, ioc_request->count); 513 else 514 error = 0; 515 kfree(buf, M_ATA); 516 ata_free_request(request); 517 return error; 518 519 case IOCATAGPARM: 520 ata_getparam(atadev, 0); 521 bcopy(&atadev->param, params, sizeof(struct ata_params)); 522 return 0; 523 524 case IOCATASMODE: 525 atadev->mode = *mode; 526 ATA_SETMODE(device_get_parent(dev), dev); 527 return 0; 528 529 case IOCATAGMODE: 530 *mode = atadev->mode; 531 return 0; 532 default: 533 return ENOTTY; 534 } 535 } 536 537 static void 538 ata_boot_attach(void) 539 { 540 struct ata_channel *ch; 541 int ctlr; 542 543 get_mplock(); 544 545 /* kick of probe and attach on all channels */ 546 for (ctlr = 0; ctlr < devclass_get_maxunit(ata_devclass); ctlr++) { 547 if ((ch = devclass_get_softc(ata_devclass, ctlr))) { 548 ata_identify(ch->dev); 549 } 550 } 551 552 rel_mplock(); 553 } 554 555 556 /* 557 * misc support functions 558 */ 559 static device_t 560 ata_add_child(device_t parent, struct ata_device *atadev, int unit) 561 { 562 device_t child; 563 564 if ((child = device_add_child(parent, NULL, unit))) { 565 device_set_softc(child, atadev); 566 device_quiet(child); 567 atadev->dev = child; 568 atadev->max_iosize = DEV_BSIZE; 569 atadev->mode = ATA_PIO_MAX; 570 } 571 return child; 572 } 573 574 static int 575 ata_getparam(struct ata_device *atadev, int init) 576 { 577 struct ata_channel *ch = device_get_softc(device_get_parent(atadev->dev)); 578 struct ata_request *request; 579 u_int8_t command = 0; 580 int error = ENOMEM, retries = 2; 581 582 if (ch->devices & 583 (atadev->unit == ATA_MASTER ? ATA_ATA_MASTER : ATA_ATA_SLAVE)) 584 command = ATA_ATA_IDENTIFY; 585 if (ch->devices & 586 (atadev->unit == ATA_MASTER ? ATA_ATAPI_MASTER : ATA_ATAPI_SLAVE)) 587 command = ATA_ATAPI_IDENTIFY; 588 if (!command) 589 return ENXIO; 590 591 while (retries-- > 0 && error) { 592 if (!(request = ata_alloc_request())) 593 break; 594 request->dev = atadev->dev; 595 request->timeout = 1; 596 request->retries = 0; 597 request->u.ata.command = command; 598 request->flags = (ATA_R_READ|ATA_R_AT_HEAD|ATA_R_DIRECT|ATA_R_QUIET); 599 request->data = (void *)&atadev->param; 600 request->bytecount = sizeof(struct ata_params); 601 request->donecount = 0; 602 request->transfersize = DEV_BSIZE; 603 ata_queue_request(request); 604 error = request->result; 605 ata_free_request(request); 606 } 607 608 if (!error && (isprint(atadev->param.model[0]) || 609 isprint(atadev->param.model[1]))) { 610 struct ata_params *atacap = &atadev->param; 611 char buffer[64]; 612 #if BYTE_ORDER == BIG_ENDIAN 613 int16_t *ptr; 614 615 for (ptr = (int16_t *)atacap; 616 ptr < (int16_t *)atacap + sizeof(struct ata_params)/2; ptr++) { 617 *ptr = bswap16(*ptr); 618 } 619 #endif 620 if (!(!strncmp(atacap->model, "FX", 2) || 621 !strncmp(atacap->model, "NEC", 3) || 622 !strncmp(atacap->model, "Pioneer", 7) || 623 !strncmp(atacap->model, "SHARP", 5))) { 624 bswap(atacap->model, sizeof(atacap->model)); 625 bswap(atacap->revision, sizeof(atacap->revision)); 626 bswap(atacap->serial, sizeof(atacap->serial)); 627 } 628 btrim(atacap->model, sizeof(atacap->model)); 629 bpack(atacap->model, atacap->model, sizeof(atacap->model)); 630 btrim(atacap->revision, sizeof(atacap->revision)); 631 bpack(atacap->revision, atacap->revision, sizeof(atacap->revision)); 632 btrim(atacap->serial, sizeof(atacap->serial)); 633 bpack(atacap->serial, atacap->serial, sizeof(atacap->serial)); 634 635 if (bootverbose) 636 kprintf("ata%d-%s: pio=%s wdma=%s udma=%s cable=%s wire\n", 637 device_get_unit(ch->dev), 638 atadev->unit == ATA_MASTER ? "master" : "slave", 639 ata_mode2str(ata_pmode(atacap)), 640 ata_mode2str(ata_wmode(atacap)), 641 ata_mode2str(ata_umode(atacap)), 642 (atacap->hwres & ATA_CABLE_ID) ? "80":"40"); 643 644 if (init) { 645 ksprintf(buffer, "%.40s/%.8s", atacap->model, atacap->revision); 646 device_set_desc_copy(atadev->dev, buffer); 647 if (atadev->param.config & ATA_PROTO_ATAPI) { 648 if (atapi_dma && ch->dma && 649 (atadev->param.config & ATA_DRQ_MASK) != ATA_DRQ_INTR && 650 ata_umode(&atadev->param) >= ATA_UDMA2) 651 atadev->mode = ATA_DMA_MAX; 652 } 653 else { 654 if (ata_dma && ch->dma && 655 (ata_umode(&atadev->param) > 0 || 656 ata_wmode(&atadev->param) > 0)) 657 atadev->mode = ATA_DMA_MAX; 658 } 659 } 660 } 661 else { 662 if (!error) 663 error = ENXIO; 664 } 665 return error; 666 } 667 668 int 669 ata_identify(device_t dev) 670 { 671 struct ata_channel *ch = device_get_softc(dev); 672 struct ata_device *master = NULL, *slave = NULL; 673 device_t master_child = NULL, slave_child = NULL; 674 int master_unit = -1, slave_unit = -1; 675 676 if (ch->devices & (ATA_ATA_MASTER | ATA_ATAPI_MASTER)) { 677 if (!(master = kmalloc(sizeof(struct ata_device), 678 M_ATA, M_NOWAIT | M_ZERO))) { 679 device_printf(dev, "out of memory\n"); 680 return ENOMEM; 681 } 682 master->unit = ATA_MASTER; 683 } 684 if (ch->devices & (ATA_ATA_SLAVE | ATA_ATAPI_SLAVE)) { 685 if (!(slave = kmalloc(sizeof(struct ata_device), 686 M_ATA, M_NOWAIT | M_ZERO))) { 687 kfree(master, M_ATA); 688 device_printf(dev, "out of memory\n"); 689 return ENOMEM; 690 } 691 slave->unit = ATA_SLAVE; 692 } 693 694 #ifdef ATA_STATIC_ID 695 if (ch->devices & ATA_ATA_MASTER) 696 master_unit = (device_get_unit(dev) << 1); 697 #endif 698 if (master && !(master_child = ata_add_child(dev, master, master_unit))) { 699 kfree(master, M_ATA); 700 master = NULL; 701 } 702 #ifdef ATA_STATIC_ID 703 if (ch->devices & ATA_ATA_SLAVE) 704 slave_unit = (device_get_unit(dev) << 1) + 1; 705 #endif 706 if (slave && !(slave_child = ata_add_child(dev, slave, slave_unit))) { 707 kfree(slave, M_ATA); 708 slave = NULL; 709 } 710 711 if (slave && ata_getparam(slave, 1)) { 712 device_delete_child(dev, slave_child); 713 kfree(slave, M_ATA); 714 } 715 if (master && ata_getparam(master, 1)) { 716 device_delete_child(dev, master_child); 717 kfree(master, M_ATA); 718 } 719 720 bus_generic_probe(dev); 721 bus_generic_attach(dev); 722 return 0; 723 } 724 725 void 726 ata_default_registers(device_t dev) 727 { 728 struct ata_channel *ch = device_get_softc(dev); 729 730 /* fill in the defaults from whats setup already */ 731 ch->r_io[ATA_ERROR].res = ch->r_io[ATA_FEATURE].res; 732 ch->r_io[ATA_ERROR].offset = ch->r_io[ATA_FEATURE].offset; 733 ch->r_io[ATA_IREASON].res = ch->r_io[ATA_COUNT].res; 734 ch->r_io[ATA_IREASON].offset = ch->r_io[ATA_COUNT].offset; 735 ch->r_io[ATA_STATUS].res = ch->r_io[ATA_COMMAND].res; 736 ch->r_io[ATA_STATUS].offset = ch->r_io[ATA_COMMAND].offset; 737 ch->r_io[ATA_ALTSTAT].res = ch->r_io[ATA_CONTROL].res; 738 ch->r_io[ATA_ALTSTAT].offset = ch->r_io[ATA_CONTROL].offset; 739 } 740 741 void 742 ata_modify_if_48bit(struct ata_request *request) 743 { 744 struct ata_channel *ch = device_get_softc(device_get_parent(request->dev)); 745 struct ata_device *atadev = device_get_softc(request->dev); 746 747 atadev->flags &= ~ATA_D_48BIT_ACTIVE; 748 749 if ((request->u.ata.lba >= ATA_MAX_28BIT_LBA || 750 request->u.ata.count > 256) && 751 atadev->param.support.command2 & ATA_SUPPORT_ADDRESS48) { 752 753 /* translate command into 48bit version */ 754 switch (request->u.ata.command) { 755 case ATA_READ: 756 request->u.ata.command = ATA_READ48; 757 break; 758 case ATA_READ_MUL: 759 request->u.ata.command = ATA_READ_MUL48; 760 break; 761 case ATA_READ_DMA: 762 if (ch->flags & ATA_NO_48BIT_DMA) { 763 if (request->transfersize > DEV_BSIZE) 764 request->u.ata.command = ATA_READ_MUL48; 765 else 766 request->u.ata.command = ATA_READ48; 767 request->flags &= ~ATA_R_DMA; 768 } 769 else 770 request->u.ata.command = ATA_READ_DMA48; 771 break; 772 case ATA_READ_DMA_QUEUED: 773 if (ch->flags & ATA_NO_48BIT_DMA) { 774 if (request->transfersize > DEV_BSIZE) 775 request->u.ata.command = ATA_READ_MUL48; 776 else 777 request->u.ata.command = ATA_READ48; 778 request->flags &= ~ATA_R_DMA; 779 } 780 else 781 request->u.ata.command = ATA_READ_DMA_QUEUED48; 782 break; 783 case ATA_WRITE: 784 request->u.ata.command = ATA_WRITE48; 785 break; 786 case ATA_WRITE_MUL: 787 request->u.ata.command = ATA_WRITE_MUL48; 788 break; 789 case ATA_WRITE_DMA: 790 if (ch->flags & ATA_NO_48BIT_DMA) { 791 if (request->transfersize > DEV_BSIZE) 792 request->u.ata.command = ATA_WRITE_MUL48; 793 else 794 request->u.ata.command = ATA_WRITE48; 795 request->flags &= ~ATA_R_DMA; 796 } 797 else 798 request->u.ata.command = ATA_WRITE_DMA48; 799 break; 800 case ATA_WRITE_DMA_QUEUED: 801 if (ch->flags & ATA_NO_48BIT_DMA) { 802 if (request->transfersize > DEV_BSIZE) 803 request->u.ata.command = ATA_WRITE_MUL48; 804 else 805 request->u.ata.command = ATA_WRITE48; 806 request->u.ata.command = ATA_WRITE48; 807 request->flags &= ~ATA_R_DMA; 808 } 809 else 810 request->u.ata.command = ATA_WRITE_DMA_QUEUED48; 811 break; 812 case ATA_FLUSHCACHE: 813 request->u.ata.command = ATA_FLUSHCACHE48; 814 break; 815 case ATA_READ_NATIVE_MAX_ADDDRESS: 816 request->u.ata.command = ATA_READ_NATIVE_MAX_ADDDRESS48; 817 break; 818 case ATA_SET_MAX_ADDRESS: 819 request->u.ata.command = ATA_SET_MAX_ADDRESS48; 820 break; 821 default: 822 return; 823 } 824 atadev->flags |= ATA_D_48BIT_ACTIVE; 825 } 826 } 827 828 void 829 ata_udelay(int interval) 830 { 831 /* for now just use DELAY, the timer/sleep subsytems are not there yet */ 832 /* XXX use DRIVERSLEEP if possible */ 833 if (1 || interval < (1000000/hz)) 834 DELAY(interval); 835 else 836 tsleep(&interval, 0, "ataslp", interval/(1000000/hz)); 837 } 838 839 char * 840 ata_mode2str(int mode) 841 { 842 switch (mode) { 843 case -1: return "UNSUPPORTED"; 844 case ATA_PIO0: return "PIO0"; 845 case ATA_PIO1: return "PIO1"; 846 case ATA_PIO2: return "PIO2"; 847 case ATA_PIO3: return "PIO3"; 848 case ATA_PIO4: return "PIO4"; 849 case ATA_WDMA0: return "WDMA0"; 850 case ATA_WDMA1: return "WDMA1"; 851 case ATA_WDMA2: return "WDMA2"; 852 case ATA_UDMA0: return "UDMA16"; 853 case ATA_UDMA1: return "UDMA25"; 854 case ATA_UDMA2: return "UDMA33"; 855 case ATA_UDMA3: return "UDMA40"; 856 case ATA_UDMA4: return "UDMA66"; 857 case ATA_UDMA5: return "UDMA100"; 858 case ATA_UDMA6: return "UDMA133"; 859 case ATA_SA150: return "SATA150"; 860 case ATA_SA300: return "SATA300"; 861 case ATA_USB: return "USB"; 862 case ATA_USB1: return "USB1"; 863 case ATA_USB2: return "USB2"; 864 default: 865 if (mode & ATA_DMA_MASK) 866 return "BIOSDMA"; 867 else 868 return "BIOSPIO"; 869 } 870 } 871 872 int 873 ata_pmode(struct ata_params *ap) 874 { 875 if (ap->atavalid & ATA_FLAG_64_70) { 876 if (ap->apiomodes & 0x02) 877 return ATA_PIO4; 878 if (ap->apiomodes & 0x01) 879 return ATA_PIO3; 880 } 881 if (ap->mwdmamodes & 0x04) 882 return ATA_PIO4; 883 if (ap->mwdmamodes & 0x02) 884 return ATA_PIO3; 885 if (ap->mwdmamodes & 0x01) 886 return ATA_PIO2; 887 if ((ap->retired_piomode & ATA_RETIRED_PIO_MASK) == 0x200) 888 return ATA_PIO2; 889 if ((ap->retired_piomode & ATA_RETIRED_PIO_MASK) == 0x100) 890 return ATA_PIO1; 891 if ((ap->retired_piomode & ATA_RETIRED_PIO_MASK) == 0x000) 892 return ATA_PIO0; 893 return ATA_PIO0; 894 } 895 896 int 897 ata_wmode(struct ata_params *ap) 898 { 899 if (ap->mwdmamodes & 0x04) 900 return ATA_WDMA2; 901 if (ap->mwdmamodes & 0x02) 902 return ATA_WDMA1; 903 if (ap->mwdmamodes & 0x01) 904 return ATA_WDMA0; 905 return -1; 906 } 907 908 int 909 ata_umode(struct ata_params *ap) 910 { 911 if (ap->atavalid & ATA_FLAG_88) { 912 if (ap->udmamodes & 0x40) 913 return ATA_UDMA6; 914 if (ap->udmamodes & 0x20) 915 return ATA_UDMA5; 916 if (ap->udmamodes & 0x10) 917 return ATA_UDMA4; 918 if (ap->udmamodes & 0x08) 919 return ATA_UDMA3; 920 if (ap->udmamodes & 0x04) 921 return ATA_UDMA2; 922 if (ap->udmamodes & 0x02) 923 return ATA_UDMA1; 924 if (ap->udmamodes & 0x01) 925 return ATA_UDMA0; 926 } 927 return -1; 928 } 929 930 int 931 ata_limit_mode(device_t dev, int mode, int maxmode) 932 { 933 struct ata_device *atadev = device_get_softc(dev); 934 935 if (maxmode && mode > maxmode) 936 mode = maxmode; 937 938 if (mode >= ATA_UDMA0 && ata_umode(&atadev->param) > 0) 939 return min(mode, ata_umode(&atadev->param)); 940 941 if (mode >= ATA_WDMA0 && ata_wmode(&atadev->param) > 0) 942 return min(mode, ata_wmode(&atadev->param)); 943 944 if (mode > ata_pmode(&atadev->param)) 945 return min(mode, ata_pmode(&atadev->param)); 946 947 return mode; 948 } 949 950 static void 951 bswap(int8_t *buf, int len) 952 { 953 u_int16_t *ptr = (u_int16_t*)(buf + len); 954 955 while (--ptr >= (u_int16_t*)buf) 956 *ptr = ntohs(*ptr); 957 } 958 959 static void 960 btrim(int8_t *buf, int len) 961 { 962 int8_t *ptr; 963 964 for (ptr = buf; ptr < buf+len; ++ptr) 965 if (!*ptr || *ptr == '_') 966 *ptr = ' '; 967 for (ptr = buf + len - 1; ptr >= buf && *ptr == ' '; --ptr) 968 *ptr = 0; 969 } 970 971 static void 972 bpack(int8_t *src, int8_t *dst, int len) 973 { 974 int i, j, blank; 975 976 for (i = j = blank = 0 ; i < len; i++) { 977 if (blank && src[i] == ' ') continue; 978 if (blank && src[i] != ' ') { 979 dst[j++] = src[i]; 980 blank = 0; 981 continue; 982 } 983 if (src[i] == ' ') { 984 blank = 1; 985 if (i == 0) 986 continue; 987 } 988 dst[j++] = src[i]; 989 } 990 if (j < len) 991 dst[j] = 0x00; 992 } 993 994 995 /* 996 * module handeling 997 */ 998 static int 999 ata_module_event_handler(module_t mod, int what, void *arg) 1000 { 1001 /* static because we need the reference at destruction time */ 1002 static cdev_t atacdev; 1003 1004 switch (what) { 1005 case MOD_LOAD: 1006 /* register controlling device */ 1007 dev_ops_add(&ata_ops, 0, 0); 1008 atacdev = make_dev(&ata_ops, 0, UID_ROOT, GID_OPERATOR, 0600, "ata"); 1009 reference_dev(atacdev); 1010 return 0; 1011 1012 case MOD_UNLOAD: 1013 /* deregister controlling device */ 1014 destroy_dev(atacdev); 1015 dev_ops_remove(&ata_ops, 0, 0); 1016 return 0; 1017 1018 default: 1019 return EOPNOTSUPP; 1020 } 1021 } 1022 1023 static moduledata_t ata_moduledata = { "ata", ata_module_event_handler, NULL }; 1024 DECLARE_MODULE(ata, ata_moduledata, SI_SUB_CONFIGURE, SI_ORDER_SECOND); 1025 MODULE_VERSION(ata, 1); 1026 1027 /* 1028 * Construct a completely zero'ed ata_request. On objcache_put(), an 1029 * ata_request object is also zero'ed, so objcache_get() is guaranteed to give 1030 * completely zero'ed objects without spending too much time. 1031 */ 1032 static boolean_t 1033 ata_request_cache_ctor(void *obj, void *private, int ocflags) 1034 { 1035 struct ata_request *arp = obj; 1036 1037 bzero(arp, sizeof(struct ata_request)); 1038 return(TRUE); 1039 } 1040 1041 /* 1042 * Construct a completely zero'ed ata_composite. On objcache_put(), an 1043 * ata_composite object is also zero'ed, so objcache_get() is guaranteed to give 1044 * completely zero'ed objects without spending too much time. 1045 */ 1046 static boolean_t 1047 ata_composite_cache_ctor(void *obj, void *private, int ocflags) 1048 { 1049 struct ata_composite *acp = obj; 1050 1051 bzero(acp, sizeof(struct ata_composite)); 1052 return(TRUE); 1053 } 1054 1055 static void 1056 ata_init(void) 1057 { 1058 ata_request_cache = objcache_create("ata_request", 0, 0, 1059 ata_request_cache_ctor, NULL, NULL, 1060 objcache_malloc_alloc, 1061 objcache_malloc_free, 1062 &ata_request_malloc_args); 1063 ata_composite_cache = objcache_create("ata_composite", 0, 0, 1064 ata_composite_cache_ctor, NULL, NULL, 1065 objcache_malloc_alloc, 1066 objcache_malloc_free, 1067 &ata_composite_malloc_args); 1068 } 1069 SYSINIT(ata_register, SI_SUB_DRIVERS, SI_ORDER_SECOND, ata_init, NULL); 1070 1071 static void 1072 ata_uninit(void) 1073 { 1074 objcache_destroy(ata_composite_cache); 1075 objcache_destroy(ata_request_cache); 1076 } 1077 SYSUNINIT(ata_unregister, SI_SUB_DRIVERS, SI_ORDER_SECOND, ata_uninit, NULL); 1078