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 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include "opt_ata.h" 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/ata.h> 34 #include <sys/kernel.h> 35 #include <sys/module.h> 36 #include <sys/endian.h> 37 #include <sys/ctype.h> 38 #include <sys/conf.h> 39 #include <sys/bus.h> 40 #include <sys/bio.h> 41 #include <sys/malloc.h> 42 #include <sys/sysctl.h> 43 #include <sys/sema.h> 44 #include <sys/taskqueue.h> 45 #include <vm/uma.h> 46 #include <machine/stdarg.h> 47 #include <machine/resource.h> 48 #include <machine/bus.h> 49 #include <sys/rman.h> 50 #ifdef __alpha__ 51 #include <machine/md_var.h> 52 #endif 53 #include <dev/ata/ata-all.h> 54 #include <ata_if.h> 55 56 /* device structure */ 57 static d_ioctl_t ata_ioctl; 58 static struct cdevsw ata_cdevsw = { 59 .d_version = D_VERSION, 60 .d_flags = D_NEEDGIANT, /* we need this as newbus isn't mpsafe */ 61 .d_ioctl = ata_ioctl, 62 .d_name = "ata", 63 }; 64 65 /* prototypes */ 66 static void ata_boot_attach(void); 67 static device_t ata_add_child(device_t, struct ata_device *, int); 68 static int ata_getparam(struct ata_device *, int); 69 static void bswap(int8_t *, int); 70 static void btrim(int8_t *, int); 71 static void bpack(int8_t *, int8_t *, int); 72 73 /* global vars */ 74 MALLOC_DEFINE(M_ATA, "ata_generic", "ATA driver generic layer"); 75 int (*ata_raid_ioctl_func)(u_long cmd, caddr_t data) = NULL; 76 devclass_t ata_devclass; 77 uma_zone_t ata_request_zone; 78 uma_zone_t ata_composite_zone; 79 int ata_wc = 1; 80 81 /* local vars */ 82 static struct intr_config_hook *ata_delayed_attach = NULL; 83 static int ata_dma = 1; 84 static int atapi_dma = 1; 85 86 /* sysctl vars */ 87 SYSCTL_NODE(_hw, OID_AUTO, ata, CTLFLAG_RD, 0, "ATA driver parameters"); 88 TUNABLE_INT("hw.ata.ata_dma", &ata_dma); 89 SYSCTL_INT(_hw_ata, OID_AUTO, ata_dma, CTLFLAG_RDTUN, &ata_dma, 0, 90 "ATA disk DMA mode control"); 91 TUNABLE_INT("hw.ata.atapi_dma", &atapi_dma); 92 SYSCTL_INT(_hw_ata, OID_AUTO, atapi_dma, CTLFLAG_RDTUN, &atapi_dma, 0, 93 "ATAPI device DMA mode control"); 94 TUNABLE_INT("hw.ata.wc", &ata_wc); 95 SYSCTL_INT(_hw_ata, OID_AUTO, wc, CTLFLAG_RDTUN, &ata_wc, 0, 96 "ATA disk write caching"); 97 98 /* 99 * newbus device interface related functions 100 */ 101 int 102 ata_probe(device_t dev) 103 { 104 return 0; 105 } 106 107 int 108 ata_attach(device_t dev) 109 { 110 struct ata_channel *ch = device_get_softc(dev); 111 int error, rid; 112 113 /* check that we have a virgin channel to attach */ 114 if (ch->r_irq) 115 return EEXIST; 116 117 /* initialize the softc basics */ 118 ch->dev = dev; 119 ch->state = ATA_IDLE; 120 bzero(&ch->state_mtx, sizeof(struct mtx)); 121 mtx_init(&ch->state_mtx, "ATA state lock", NULL, MTX_DEF); 122 bzero(&ch->queue_mtx, sizeof(struct mtx)); 123 mtx_init(&ch->queue_mtx, "ATA queue lock", NULL, MTX_DEF); 124 TAILQ_INIT(&ch->ata_queue); 125 126 /* reset the controller HW, the channel and device(s) */ 127 while (ATA_LOCKING(dev, ATA_LF_LOCK) != ch->unit) 128 tsleep(&error, PRIBIO, "ataatch", 1); 129 ATA_RESET(dev); 130 ATA_LOCKING(dev, ATA_LF_UNLOCK); 131 132 /* setup interrupt delivery */ 133 rid = ATA_IRQ_RID; 134 ch->r_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 135 RF_SHAREABLE | RF_ACTIVE); 136 if (!ch->r_irq) { 137 device_printf(dev, "unable to allocate interrupt\n"); 138 return ENXIO; 139 } 140 if ((error = bus_setup_intr(dev, ch->r_irq, ATA_INTR_FLAGS, 141 (driver_intr_t *)ata_interrupt, ch, &ch->ih))) { 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 if (!ata_delayed_attach) 148 ata_identify(dev); 149 return 0; 150 } 151 152 int 153 ata_detach(device_t dev) 154 { 155 struct ata_channel *ch = device_get_softc(dev); 156 device_t *children; 157 int nchildren, i; 158 159 /* check that we have a valid channel to detach */ 160 if (!ch->r_irq) 161 return ENXIO; 162 163 /* grap the channel lock so no new requests gets launched */ 164 mtx_lock(&ch->state_mtx); 165 ch->state |= ATA_STALL_QUEUE; 166 mtx_unlock(&ch->state_mtx); 167 168 /* detach & delete all children */ 169 if (!device_get_children(dev, &children, &nchildren)) { 170 for (i = 0; i < nchildren; i++) 171 if (children[i]) 172 device_delete_child(dev, children[i]); 173 free(children, M_TEMP); 174 } 175 176 /* release resources */ 177 bus_teardown_intr(dev, ch->r_irq, ch->ih); 178 bus_release_resource(dev, SYS_RES_IRQ, ATA_IRQ_RID, ch->r_irq); 179 ch->r_irq = NULL; 180 mtx_destroy(&ch->state_mtx); 181 mtx_destroy(&ch->queue_mtx); 182 return 0; 183 } 184 185 int 186 ata_reinit(device_t dev) 187 { 188 struct ata_channel *ch = device_get_softc(dev); 189 struct ata_request *request; 190 device_t *children; 191 int nchildren, i; 192 193 /* check that we have a valid channel to reinit */ 194 if (!ch || !ch->r_irq) 195 return ENXIO; 196 197 if (bootverbose) 198 device_printf(dev, "reiniting channel ..\n"); 199 200 /* poll for locking the channel */ 201 while (ATA_LOCKING(dev, ATA_LF_LOCK) != ch->unit) 202 tsleep(&dev, PRIBIO, "atarini", 1); 203 204 /* catch eventual request in ch->running */ 205 mtx_lock(&ch->state_mtx); 206 if ((request = ch->running)) 207 callout_stop(&request->callout); 208 ch->running = NULL; 209 210 /* unconditionally grap the channel lock */ 211 ch->state |= ATA_STALL_QUEUE; 212 mtx_unlock(&ch->state_mtx); 213 214 /* reset the controller HW, the channel and device(s) */ 215 ATA_RESET(dev); 216 217 /* reinit the children and delete any that fails */ 218 if (!device_get_children(dev, &children, &nchildren)) { 219 mtx_lock(&Giant); /* newbus suckage it needs Giant */ 220 for (i = 0; i < nchildren; i++) { 221 /* did any children go missing ? */ 222 if (children[i] && device_is_attached(children[i]) && 223 ATA_REINIT(children[i])) { 224 /* 225 * if we had a running request and its device matches 226 * this child we need to inform the request that the 227 * device is gone. 228 */ 229 if (request && request->dev == children[i]) { 230 request->result = ENXIO; 231 device_printf(request->dev, "FAILURE - device detached\n"); 232 233 /* if not timeout finish request here */ 234 if (!(request->flags & ATA_R_TIMEOUT)) 235 ata_finish(request); 236 request = NULL; 237 } 238 device_delete_child(dev, children[i]); 239 } 240 } 241 free(children, M_TEMP); 242 mtx_unlock(&Giant); /* newbus suckage dealt with, release Giant */ 243 } 244 245 /* if we still have a good request put it on the queue again */ 246 if (request && !(request->flags & ATA_R_TIMEOUT)) { 247 device_printf(request->dev, 248 "WARNING - %s requeued due to channel reset", 249 ata_cmd2str(request)); 250 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL))) 251 printf(" LBA=%llu", (unsigned long long)request->u.ata.lba); 252 printf("\n"); 253 request->flags |= ATA_R_REQUEUE; 254 ata_queue_request(request); 255 } 256 257 /* we're done release the channel for new work */ 258 mtx_lock(&ch->state_mtx); 259 ch->state = ATA_IDLE; 260 mtx_unlock(&ch->state_mtx); 261 ATA_LOCKING(dev, ATA_LF_UNLOCK); 262 263 if (bootverbose) 264 device_printf(dev, "reinit done ..\n"); 265 266 /* kick off requests on the queue */ 267 ata_start(dev); 268 return 0; 269 } 270 271 int 272 ata_suspend(device_t dev) 273 { 274 struct ata_channel *ch; 275 276 /* check for valid device */ 277 if (!dev || !(ch = device_get_softc(dev))) 278 return ENXIO; 279 280 /* wait for the channel to be IDLE before entering suspend mode */ 281 while (1) { 282 mtx_lock(&ch->state_mtx); 283 if (ch->state == ATA_IDLE) { 284 ch->state = ATA_ACTIVE; 285 mtx_unlock(&ch->state_mtx); 286 break; 287 } 288 mtx_unlock(&ch->state_mtx); 289 tsleep(ch, PRIBIO, "atasusp", hz/10); 290 } 291 ATA_LOCKING(dev, ATA_LF_UNLOCK); 292 return 0; 293 } 294 295 int 296 ata_resume(device_t dev) 297 { 298 struct ata_channel *ch; 299 int error; 300 301 /* check for valid device */ 302 if (!dev || !(ch = device_get_softc(dev))) 303 return ENXIO; 304 305 /* reinit the devices, we dont know what mode/state they are in */ 306 error = ata_reinit(dev); 307 308 /* kick off requests on the queue */ 309 ata_start(dev); 310 return error; 311 } 312 313 int 314 ata_interrupt(void *data) 315 { 316 struct ata_channel *ch = (struct ata_channel *)data; 317 struct ata_request *request; 318 319 mtx_lock(&ch->state_mtx); 320 do { 321 /* ignore interrupt if its not for us */ 322 if (ch->hw.status && !ch->hw.status(ch->dev)) 323 break; 324 325 /* do we have a running request */ 326 if (!(request = ch->running)) 327 break; 328 329 ATA_DEBUG_RQ(request, "interrupt"); 330 331 /* safetycheck for the right state */ 332 if (ch->state == ATA_IDLE) { 333 device_printf(request->dev, "interrupt on idle channel ignored\n"); 334 break; 335 } 336 337 /* 338 * we have the HW locks, so end the tranaction for this request 339 * if it finishes immediately otherwise wait for next interrupt 340 */ 341 if (ch->hw.end_transaction(request) == ATA_OP_FINISHED) { 342 ch->running = NULL; 343 if (ch->state == ATA_ACTIVE) 344 ch->state = ATA_IDLE; 345 mtx_unlock(&ch->state_mtx); 346 ATA_LOCKING(ch->dev, ATA_LF_UNLOCK); 347 ata_finish(request); 348 return 1; 349 } 350 } while (0); 351 mtx_unlock(&ch->state_mtx); 352 return 0; 353 } 354 355 /* 356 * device related interfaces 357 */ 358 static int 359 ata_ioctl(struct cdev *dev, u_long cmd, caddr_t data, 360 int32_t flag, struct thread *td) 361 { 362 device_t device, *children; 363 struct ata_ioc_devices *devices = (struct ata_ioc_devices *)data; 364 int *value = (int *)data; 365 int i, nchildren, error = ENOTTY; 366 367 switch (cmd) { 368 case IOCATAGMAXCHANNEL: 369 *value = devclass_get_maxunit(ata_devclass); 370 error = 0; 371 break; 372 373 case IOCATAREINIT: 374 if (*value > devclass_get_maxunit(ata_devclass) || 375 !(device = devclass_get_device(ata_devclass, *value))) 376 return ENXIO; 377 error = ata_reinit(device); 378 ata_start(device); 379 break; 380 381 case IOCATAATTACH: 382 if (*value > devclass_get_maxunit(ata_devclass) || 383 !(device = devclass_get_device(ata_devclass, *value))) 384 return ENXIO; 385 /* XXX SOS should enable channel HW on controller */ 386 error = ata_attach(device); 387 break; 388 389 case IOCATADETACH: 390 if (*value > devclass_get_maxunit(ata_devclass) || 391 !(device = devclass_get_device(ata_devclass, *value))) 392 return ENXIO; 393 error = ata_detach(device); 394 /* XXX SOS should disable channel HW on controller */ 395 break; 396 397 case IOCATADEVICES: 398 if (devices->channel > devclass_get_maxunit(ata_devclass) || 399 !(device = devclass_get_device(ata_devclass, devices->channel))) 400 return ENXIO; 401 bzero(devices->name[0], 32); 402 bzero(&devices->params[0], sizeof(struct ata_params)); 403 bzero(devices->name[1], 32); 404 bzero(&devices->params[1], sizeof(struct ata_params)); 405 if (!device_get_children(device, &children, &nchildren)) { 406 for (i = 0; i < nchildren; i++) { 407 if (children[i] && device_is_attached(children[i])) { 408 struct ata_device *atadev = device_get_softc(children[i]); 409 410 if (atadev->unit == ATA_MASTER) { 411 strncpy(devices->name[0], 412 device_get_nameunit(children[i]), 32); 413 bcopy(&atadev->param, &devices->params[0], 414 sizeof(struct ata_params)); 415 } 416 if (atadev->unit == ATA_SLAVE) { 417 strncpy(devices->name[1], 418 device_get_nameunit(children[i]), 32); 419 bcopy(&atadev->param, &devices->params[1], 420 sizeof(struct ata_params)); 421 } 422 } 423 } 424 free(children, M_TEMP); 425 error = 0; 426 } 427 else 428 error = ENODEV; 429 break; 430 431 default: 432 if (ata_raid_ioctl_func) 433 error = ata_raid_ioctl_func(cmd, data); 434 } 435 return error; 436 } 437 438 int 439 ata_device_ioctl(device_t dev, u_long cmd, caddr_t data) 440 { 441 struct ata_device *atadev = device_get_softc(dev); 442 struct ata_ioc_request *ioc_request = (struct ata_ioc_request *)data; 443 struct ata_params *params = (struct ata_params *)data; 444 int *mode = (int *)data; 445 struct ata_request *request; 446 caddr_t buf; 447 int error; 448 449 switch (cmd) { 450 case IOCATAREQUEST: 451 if (!(buf = malloc(ioc_request->count, M_ATA, M_NOWAIT))) { 452 return ENOMEM; 453 } 454 if (!(request = ata_alloc_request())) { 455 free(buf, M_ATA); 456 return ENOMEM; 457 } 458 if (ioc_request->flags & ATA_CMD_WRITE) { 459 error = copyin(ioc_request->data, buf, ioc_request->count); 460 if (error) { 461 free(buf, M_ATA); 462 ata_free_request(request); 463 return error; 464 } 465 } 466 request->dev = dev; 467 if (ioc_request->flags & ATA_CMD_ATAPI) { 468 request->flags = ATA_R_ATAPI; 469 bcopy(ioc_request->u.atapi.ccb, request->u.atapi.ccb, 16); 470 } 471 else { 472 request->u.ata.command = ioc_request->u.ata.command; 473 request->u.ata.feature = ioc_request->u.ata.feature; 474 request->u.ata.lba = ioc_request->u.ata.lba; 475 request->u.ata.count = ioc_request->u.ata.count; 476 } 477 request->timeout = ioc_request->timeout; 478 request->data = buf; 479 request->bytecount = ioc_request->count; 480 request->transfersize = request->bytecount; 481 if (ioc_request->flags & ATA_CMD_CONTROL) 482 request->flags |= ATA_R_CONTROL; 483 if (ioc_request->flags & ATA_CMD_READ) 484 request->flags |= ATA_R_READ; 485 if (ioc_request->flags & ATA_CMD_WRITE) 486 request->flags |= ATA_R_WRITE; 487 ata_queue_request(request); 488 if (!(request->flags & ATA_R_ATAPI)) { 489 ioc_request->u.ata.command = request->u.ata.command; 490 ioc_request->u.ata.feature = request->u.ata.feature; 491 ioc_request->u.ata.lba = request->u.ata.lba; 492 ioc_request->u.ata.count = request->u.ata.count; 493 } 494 ioc_request->error = request->result; 495 if (ioc_request->flags & ATA_CMD_READ) 496 error = copyout(buf, ioc_request->data, ioc_request->count); 497 else 498 error = 0; 499 free(buf, M_ATA); 500 ata_free_request(request); 501 return error; 502 503 case IOCATAGPARM: 504 ata_getparam(atadev, 0); 505 bcopy(&atadev->param, params, sizeof(struct ata_params)); 506 return 0; 507 508 case IOCATASMODE: 509 atadev->mode = *mode; 510 ATA_SETMODE(device_get_parent(dev), dev); 511 return 0; 512 513 case IOCATAGMODE: 514 *mode = atadev->mode; 515 return 0; 516 default: 517 return ENOTTY; 518 } 519 } 520 521 static void 522 ata_boot_attach(void) 523 { 524 struct ata_channel *ch; 525 int ctlr; 526 527 mtx_lock(&Giant); /* newbus suckage it needs Giant */ 528 529 /* kick of probe and attach on all channels */ 530 for (ctlr = 0; ctlr < devclass_get_maxunit(ata_devclass); ctlr++) { 531 if ((ch = devclass_get_softc(ata_devclass, ctlr))) { 532 ata_identify(ch->dev); 533 } 534 } 535 536 /* release the hook that got us here, we are only needed once during boot */ 537 if (ata_delayed_attach) { 538 config_intrhook_disestablish(ata_delayed_attach); 539 free(ata_delayed_attach, M_TEMP); 540 ata_delayed_attach = NULL; 541 } 542 543 mtx_unlock(&Giant); /* newbus suckage dealt with, release Giant */ 544 } 545 546 547 /* 548 * misc support functions 549 */ 550 static device_t 551 ata_add_child(device_t parent, struct ata_device *atadev, int unit) 552 { 553 device_t child; 554 555 if ((child = device_add_child(parent, NULL, unit))) { 556 device_set_softc(child, atadev); 557 device_quiet(child); 558 atadev->dev = child; 559 atadev->max_iosize = DEV_BSIZE; 560 atadev->mode = ATA_PIO_MAX; 561 } 562 return child; 563 } 564 565 static int 566 ata_getparam(struct ata_device *atadev, int init) 567 { 568 struct ata_channel *ch = device_get_softc(device_get_parent(atadev->dev)); 569 struct ata_request *request; 570 u_int8_t command = 0; 571 int error = ENOMEM, retries = 2; 572 573 if (ch->devices & 574 (atadev->unit == ATA_MASTER ? ATA_ATA_MASTER : ATA_ATA_SLAVE)) 575 command = ATA_ATA_IDENTIFY; 576 if (ch->devices & 577 (atadev->unit == ATA_MASTER ? ATA_ATAPI_MASTER : ATA_ATAPI_SLAVE)) 578 command = ATA_ATAPI_IDENTIFY; 579 if (!command) 580 return ENXIO; 581 582 while (retries-- > 0 && error) { 583 if (!(request = ata_alloc_request())) 584 break; 585 request->dev = atadev->dev; 586 request->timeout = 1; 587 request->retries = 0; 588 request->u.ata.command = command; 589 request->flags = (ATA_R_READ|ATA_R_AT_HEAD|ATA_R_DIRECT|ATA_R_QUIET); 590 request->data = (void *)&atadev->param; 591 request->bytecount = sizeof(struct ata_params); 592 request->donecount = 0; 593 request->transfersize = DEV_BSIZE; 594 ata_queue_request(request); 595 error = request->result; 596 ata_free_request(request); 597 } 598 599 if (!error && (isprint(atadev->param.model[0]) || 600 isprint(atadev->param.model[1]))) { 601 struct ata_params *atacap = &atadev->param; 602 char buffer[64]; 603 #if BYTE_ORDER == BIG_ENDIAN 604 int16_t *ptr; 605 606 for (ptr = (int16_t *)atacap; 607 ptr < (int16_t *)atacap + sizeof(struct ata_params)/2; ptr++) { 608 *ptr = bswap16(*ptr); 609 } 610 #endif 611 if (!(!strncmp(atacap->model, "FX", 2) || 612 !strncmp(atacap->model, "NEC", 3) || 613 !strncmp(atacap->model, "Pioneer", 7) || 614 !strncmp(atacap->model, "SHARP", 5))) { 615 bswap(atacap->model, sizeof(atacap->model)); 616 bswap(atacap->revision, sizeof(atacap->revision)); 617 bswap(atacap->serial, sizeof(atacap->serial)); 618 } 619 btrim(atacap->model, sizeof(atacap->model)); 620 bpack(atacap->model, atacap->model, sizeof(atacap->model)); 621 btrim(atacap->revision, sizeof(atacap->revision)); 622 bpack(atacap->revision, atacap->revision, sizeof(atacap->revision)); 623 btrim(atacap->serial, sizeof(atacap->serial)); 624 bpack(atacap->serial, atacap->serial, sizeof(atacap->serial)); 625 626 if (bootverbose) 627 printf("ata%d-%s: pio=%s wdma=%s udma=%s cable=%s wire\n", 628 ch->unit, atadev->unit == ATA_MASTER ? "master":"slave", 629 ata_mode2str(ata_pmode(atacap)), 630 ata_mode2str(ata_wmode(atacap)), 631 ata_mode2str(ata_umode(atacap)), 632 (atacap->hwres & ATA_CABLE_ID) ? "80":"40"); 633 634 if (init) { 635 sprintf(buffer, "%.40s/%.8s", atacap->model, atacap->revision); 636 device_set_desc_copy(atadev->dev, buffer); 637 if (atadev->param.config & ATA_PROTO_ATAPI) { 638 if (atapi_dma && ch->dma && 639 (atadev->param.config & ATA_DRQ_MASK) != ATA_DRQ_INTR && 640 ata_umode(&atadev->param) >= ATA_UDMA2) 641 atadev->mode = ATA_DMA_MAX; 642 } 643 else { 644 if (ata_dma && ch->dma && 645 (ata_umode(&atadev->param) > 0 || 646 ata_wmode(&atadev->param) > 0)) 647 atadev->mode = ATA_DMA_MAX; 648 } 649 } 650 } 651 else { 652 if (!error) 653 error = ENXIO; 654 } 655 return error; 656 } 657 658 int 659 ata_identify(device_t dev) 660 { 661 struct ata_channel *ch = device_get_softc(dev); 662 struct ata_device *master = NULL, *slave = NULL; 663 device_t master_child = NULL, slave_child = NULL; 664 int master_unit = -1, slave_unit = -1; 665 666 if (ch->devices & (ATA_ATA_MASTER | ATA_ATAPI_MASTER)) { 667 if (!(master = malloc(sizeof(struct ata_device), 668 M_ATA, M_NOWAIT | M_ZERO))) { 669 device_printf(dev, "out of memory\n"); 670 return ENOMEM; 671 } 672 master->unit = ATA_MASTER; 673 } 674 if (ch->devices & (ATA_ATA_SLAVE | ATA_ATAPI_SLAVE)) { 675 if (!(slave = malloc(sizeof(struct ata_device), 676 M_ATA, M_NOWAIT | M_ZERO))) { 677 free(master, M_ATA); 678 device_printf(dev, "out of memory\n"); 679 return ENOMEM; 680 } 681 slave->unit = ATA_SLAVE; 682 } 683 684 #ifdef ATA_STATIC_ID 685 if (ch->devices & ATA_ATA_MASTER) 686 master_unit = (device_get_unit(dev) << 1); 687 #endif 688 if (master && !(master_child = ata_add_child(dev, master, master_unit))) { 689 free(master, M_ATA); 690 master = NULL; 691 } 692 #ifdef ATA_STATIC_ID 693 if (ch->devices & ATA_ATA_SLAVE) 694 slave_unit = (device_get_unit(dev) << 1) + 1; 695 #endif 696 if (slave && !(slave_child = ata_add_child(dev, slave, slave_unit))) { 697 free(slave, M_ATA); 698 slave = NULL; 699 } 700 701 if (slave && ata_getparam(slave, 1)) { 702 device_delete_child(dev, slave_child); 703 free(slave, M_ATA); 704 } 705 if (master && ata_getparam(master, 1)) { 706 device_delete_child(dev, master_child); 707 free(master, M_ATA); 708 } 709 710 bus_generic_probe(dev); 711 bus_generic_attach(dev); 712 return 0; 713 } 714 715 void 716 ata_default_registers(device_t dev) 717 { 718 struct ata_channel *ch = device_get_softc(dev); 719 720 /* fill in the defaults from whats setup already */ 721 ch->r_io[ATA_ERROR].res = ch->r_io[ATA_FEATURE].res; 722 ch->r_io[ATA_ERROR].offset = ch->r_io[ATA_FEATURE].offset; 723 ch->r_io[ATA_IREASON].res = ch->r_io[ATA_COUNT].res; 724 ch->r_io[ATA_IREASON].offset = ch->r_io[ATA_COUNT].offset; 725 ch->r_io[ATA_STATUS].res = ch->r_io[ATA_COMMAND].res; 726 ch->r_io[ATA_STATUS].offset = ch->r_io[ATA_COMMAND].offset; 727 ch->r_io[ATA_ALTSTAT].res = ch->r_io[ATA_CONTROL].res; 728 ch->r_io[ATA_ALTSTAT].offset = ch->r_io[ATA_CONTROL].offset; 729 } 730 731 void 732 ata_modify_if_48bit(struct ata_request *request) 733 { 734 struct ata_channel *ch = device_get_softc(device_get_parent(request->dev)); 735 struct ata_device *atadev = device_get_softc(request->dev); 736 737 atadev->flags &= ~ATA_D_48BIT_ACTIVE; 738 739 if ((request->u.ata.lba >= ATA_MAX_28BIT_LBA || 740 request->u.ata.count > 256) && 741 atadev->param.support.command2 & ATA_SUPPORT_ADDRESS48) { 742 743 /* translate command into 48bit version */ 744 switch (request->u.ata.command) { 745 case ATA_READ: 746 request->u.ata.command = ATA_READ48; 747 break; 748 case ATA_READ_MUL: 749 request->u.ata.command = ATA_READ_MUL48; 750 break; 751 case ATA_READ_DMA: 752 if (ch->flags & ATA_NO_48BIT_DMA) { 753 if (request->transfersize > DEV_BSIZE) 754 request->u.ata.command = ATA_READ_MUL48; 755 else 756 request->u.ata.command = ATA_READ48; 757 request->flags &= ~ATA_R_DMA; 758 } 759 else 760 request->u.ata.command = ATA_READ_DMA48; 761 break; 762 case ATA_READ_DMA_QUEUED: 763 if (ch->flags & ATA_NO_48BIT_DMA) { 764 if (request->transfersize > DEV_BSIZE) 765 request->u.ata.command = ATA_READ_MUL48; 766 else 767 request->u.ata.command = ATA_READ48; 768 request->flags &= ~ATA_R_DMA; 769 } 770 else 771 request->u.ata.command = ATA_READ_DMA_QUEUED48; 772 break; 773 case ATA_WRITE: 774 request->u.ata.command = ATA_WRITE48; 775 break; 776 case ATA_WRITE_MUL: 777 request->u.ata.command = ATA_WRITE_MUL48; 778 break; 779 case ATA_WRITE_DMA: 780 if (ch->flags & ATA_NO_48BIT_DMA) { 781 if (request->transfersize > DEV_BSIZE) 782 request->u.ata.command = ATA_WRITE_MUL48; 783 else 784 request->u.ata.command = ATA_WRITE48; 785 request->flags &= ~ATA_R_DMA; 786 } 787 else 788 request->u.ata.command = ATA_WRITE_DMA48; 789 break; 790 case ATA_WRITE_DMA_QUEUED: 791 if (ch->flags & ATA_NO_48BIT_DMA) { 792 if (request->transfersize > DEV_BSIZE) 793 request->u.ata.command = ATA_WRITE_MUL48; 794 else 795 request->u.ata.command = ATA_WRITE48; 796 request->u.ata.command = ATA_WRITE48; 797 request->flags &= ~ATA_R_DMA; 798 } 799 else 800 request->u.ata.command = ATA_WRITE_DMA_QUEUED48; 801 break; 802 case ATA_FLUSHCACHE: 803 request->u.ata.command = ATA_FLUSHCACHE48; 804 break; 805 case ATA_READ_NATIVE_MAX_ADDDRESS: 806 request->u.ata.command = ATA_READ_NATIVE_MAX_ADDDRESS48; 807 break; 808 case ATA_SET_MAX_ADDRESS: 809 request->u.ata.command = ATA_SET_MAX_ADDRESS48; 810 break; 811 default: 812 return; 813 } 814 atadev->flags |= ATA_D_48BIT_ACTIVE; 815 } 816 } 817 818 void 819 ata_udelay(int interval) 820 { 821 /* for now just use DELAY, the timer/sleep subsytems are not there yet */ 822 if (1 || interval < (1000000/hz) || ata_delayed_attach) 823 DELAY(interval); 824 else 825 tsleep(&interval, PRIBIO, "ataslp", interval/(1000000/hz)); 826 } 827 828 char * 829 ata_mode2str(int mode) 830 { 831 switch (mode) { 832 case -1: return "UNSUPPORTED"; 833 case ATA_PIO0: return "PIO0"; 834 case ATA_PIO1: return "PIO1"; 835 case ATA_PIO2: return "PIO2"; 836 case ATA_PIO3: return "PIO3"; 837 case ATA_PIO4: return "PIO4"; 838 case ATA_WDMA0: return "WDMA0"; 839 case ATA_WDMA1: return "WDMA1"; 840 case ATA_WDMA2: return "WDMA2"; 841 case ATA_UDMA0: return "UDMA16"; 842 case ATA_UDMA1: return "UDMA25"; 843 case ATA_UDMA2: return "UDMA33"; 844 case ATA_UDMA3: return "UDMA40"; 845 case ATA_UDMA4: return "UDMA66"; 846 case ATA_UDMA5: return "UDMA100"; 847 case ATA_UDMA6: return "UDMA133"; 848 case ATA_SA150: return "SATA150"; 849 case ATA_SA300: return "SATA300"; 850 default: 851 if (mode & ATA_DMA_MASK) 852 return "BIOSDMA"; 853 else 854 return "BIOSPIO"; 855 } 856 } 857 858 int 859 ata_pmode(struct ata_params *ap) 860 { 861 if (ap->atavalid & ATA_FLAG_64_70) { 862 if (ap->apiomodes & 0x02) 863 return ATA_PIO4; 864 if (ap->apiomodes & 0x01) 865 return ATA_PIO3; 866 } 867 if (ap->mwdmamodes & 0x04) 868 return ATA_PIO4; 869 if (ap->mwdmamodes & 0x02) 870 return ATA_PIO3; 871 if (ap->mwdmamodes & 0x01) 872 return ATA_PIO2; 873 if ((ap->retired_piomode & ATA_RETIRED_PIO_MASK) == 0x200) 874 return ATA_PIO2; 875 if ((ap->retired_piomode & ATA_RETIRED_PIO_MASK) == 0x100) 876 return ATA_PIO1; 877 if ((ap->retired_piomode & ATA_RETIRED_PIO_MASK) == 0x000) 878 return ATA_PIO0; 879 return ATA_PIO0; 880 } 881 882 int 883 ata_wmode(struct ata_params *ap) 884 { 885 if (ap->mwdmamodes & 0x04) 886 return ATA_WDMA2; 887 if (ap->mwdmamodes & 0x02) 888 return ATA_WDMA1; 889 if (ap->mwdmamodes & 0x01) 890 return ATA_WDMA0; 891 return -1; 892 } 893 894 int 895 ata_umode(struct ata_params *ap) 896 { 897 if (ap->atavalid & ATA_FLAG_88) { 898 if (ap->udmamodes & 0x40) 899 return ATA_UDMA6; 900 if (ap->udmamodes & 0x20) 901 return ATA_UDMA5; 902 if (ap->udmamodes & 0x10) 903 return ATA_UDMA4; 904 if (ap->udmamodes & 0x08) 905 return ATA_UDMA3; 906 if (ap->udmamodes & 0x04) 907 return ATA_UDMA2; 908 if (ap->udmamodes & 0x02) 909 return ATA_UDMA1; 910 if (ap->udmamodes & 0x01) 911 return ATA_UDMA0; 912 } 913 return -1; 914 } 915 916 int 917 ata_limit_mode(device_t dev, int mode, int maxmode) 918 { 919 struct ata_device *atadev = device_get_softc(dev); 920 921 if (maxmode && mode > maxmode) 922 mode = maxmode; 923 924 if (mode >= ATA_UDMA0 && ata_umode(&atadev->param) > 0) 925 return min(mode, ata_umode(&atadev->param)); 926 927 if (mode >= ATA_WDMA0 && ata_wmode(&atadev->param) > 0) 928 return min(mode, ata_wmode(&atadev->param)); 929 930 if (mode > ata_pmode(&atadev->param)) 931 return min(mode, ata_pmode(&atadev->param)); 932 933 return mode; 934 } 935 936 static void 937 bswap(int8_t *buf, int len) 938 { 939 u_int16_t *ptr = (u_int16_t*)(buf + len); 940 941 while (--ptr >= (u_int16_t*)buf) 942 *ptr = ntohs(*ptr); 943 } 944 945 static void 946 btrim(int8_t *buf, int len) 947 { 948 int8_t *ptr; 949 950 for (ptr = buf; ptr < buf+len; ++ptr) 951 if (!*ptr || *ptr == '_') 952 *ptr = ' '; 953 for (ptr = buf + len - 1; ptr >= buf && *ptr == ' '; --ptr) 954 *ptr = 0; 955 } 956 957 static void 958 bpack(int8_t *src, int8_t *dst, int len) 959 { 960 int i, j, blank; 961 962 for (i = j = blank = 0 ; i < len; i++) { 963 if (blank && src[i] == ' ') continue; 964 if (blank && src[i] != ' ') { 965 dst[j++] = src[i]; 966 blank = 0; 967 continue; 968 } 969 if (src[i] == ' ') { 970 blank = 1; 971 if (i == 0) 972 continue; 973 } 974 dst[j++] = src[i]; 975 } 976 if (j < len) 977 dst[j] = 0x00; 978 } 979 980 981 /* 982 * module handeling 983 */ 984 static int 985 ata_module_event_handler(module_t mod, int what, void *arg) 986 { 987 static struct cdev *atacdev; 988 989 switch (what) { 990 case MOD_LOAD: 991 /* register controlling device */ 992 atacdev = make_dev(&ata_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, "ata"); 993 994 if (cold) { 995 /* register boot attach to be run when interrupts are enabled */ 996 if (!(ata_delayed_attach = (struct intr_config_hook *) 997 malloc(sizeof(struct intr_config_hook), 998 M_TEMP, M_NOWAIT | M_ZERO))) { 999 printf("ata: malloc of delayed attach hook failed\n"); 1000 return EIO; 1001 } 1002 ata_delayed_attach->ich_func = (void*)ata_boot_attach; 1003 if (config_intrhook_establish(ata_delayed_attach) != 0) { 1004 printf("ata: config_intrhook_establish failed\n"); 1005 free(ata_delayed_attach, M_TEMP); 1006 } 1007 } 1008 return 0; 1009 1010 case MOD_UNLOAD: 1011 /* deregister controlling device */ 1012 destroy_dev(atacdev); 1013 return 0; 1014 1015 default: 1016 return EOPNOTSUPP; 1017 } 1018 } 1019 1020 static moduledata_t ata_moduledata = { "ata", ata_module_event_handler, NULL }; 1021 DECLARE_MODULE(ata, ata_moduledata, SI_SUB_CONFIGURE, SI_ORDER_SECOND); 1022 MODULE_VERSION(ata, 1); 1023 1024 static void 1025 ata_init(void) 1026 { 1027 ata_request_zone = uma_zcreate("ata_request", sizeof(struct ata_request), 1028 NULL, NULL, NULL, NULL, 0, 0); 1029 ata_composite_zone = uma_zcreate("ata_composite", 1030 sizeof(struct ata_composite), 1031 NULL, NULL, NULL, NULL, 0, 0); 1032 } 1033 SYSINIT(ata_register, SI_SUB_DRIVERS, SI_ORDER_SECOND, ata_init, NULL); 1034 1035 static void 1036 ata_uninit(void) 1037 { 1038 uma_zdestroy(ata_composite_zone); 1039 uma_zdestroy(ata_request_zone); 1040 } 1041 SYSUNINIT(ata_unregister, SI_SUB_DRIVERS, SI_ORDER_SECOND, ata_uninit, NULL); 1042