ata-all.c revision 151736
1/*- 2 * Copyright (c) 1998 - 2005 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 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> 30__FBSDID("$FreeBSD: head/sys/dev/ata/ata-all.c 151736 2005-10-27 16:32:39Z sos $"); 31 32#include "opt_ata.h" 33#include <sys/param.h> 34#include <sys/systm.h> 35#include <sys/ata.h> 36#include <sys/kernel.h> 37#include <sys/module.h> 38#include <sys/endian.h> 39#include <sys/ctype.h> 40#include <sys/conf.h> 41#include <sys/bus.h> 42#include <sys/bio.h> 43#include <sys/malloc.h> 44#include <sys/sysctl.h> 45#include <sys/sema.h> 46#include <sys/taskqueue.h> 47#include <vm/uma.h> 48#include <machine/stdarg.h> 49#include <machine/resource.h> 50#include <machine/bus.h> 51#include <sys/rman.h> 52#ifdef __alpha__ 53#include <machine/md_var.h> 54#endif 55#include <dev/ata/ata-all.h> 56#include <ata_if.h> 57 58/* device structure */ 59static d_ioctl_t ata_ioctl; 60static struct cdevsw ata_cdevsw = { 61 .d_version = D_VERSION, 62 .d_flags = D_NEEDGIANT, /* we need this as newbus isn't mpsafe */ 63 .d_ioctl = ata_ioctl, 64 .d_name = "ata", 65}; 66 67/* prototypes */ 68static void ata_interrupt(void *); 69static void ata_boot_attach(void); 70static device_t ata_add_child(device_t, struct ata_device *, int); 71static void bswap(int8_t *, int); 72static void btrim(int8_t *, int); 73static void bpack(int8_t *, int8_t *, int); 74 75/* global vars */ 76MALLOC_DEFINE(M_ATA, "ATA generic", "ATA driver generic layer"); 77int (*ata_raid_ioctl_func)(u_long cmd, caddr_t data) = NULL; 78devclass_t ata_devclass; 79uma_zone_t ata_request_zone; 80uma_zone_t ata_composite_zone; 81int ata_wc = 1; 82 83/* local vars */ 84static struct intr_config_hook *ata_delayed_attach = NULL; 85static int ata_dma = 1; 86static int atapi_dma = 1; 87 88/* sysctl vars */ 89SYSCTL_NODE(_hw, OID_AUTO, ata, CTLFLAG_RD, 0, "ATA driver parameters"); 90TUNABLE_INT("hw.ata.ata_dma", &ata_dma); 91SYSCTL_INT(_hw_ata, OID_AUTO, ata_dma, CTLFLAG_RDTUN, &ata_dma, 0, 92 "ATA disk DMA mode control"); 93TUNABLE_INT("hw.ata.atapi_dma", &atapi_dma); 94SYSCTL_INT(_hw_ata, OID_AUTO, atapi_dma, CTLFLAG_RDTUN, &atapi_dma, 0, 95 "ATAPI device DMA mode control"); 96TUNABLE_INT("hw.ata.wc", &ata_wc); 97SYSCTL_INT(_hw_ata, OID_AUTO, wc, CTLFLAG_RDTUN, &ata_wc, 0, 98 "ATA disk write caching"); 99 100/* 101 * newbus device interface related functions 102 */ 103int 104ata_probe(device_t dev) 105{ 106 return 0; 107} 108 109int 110ata_attach(device_t dev) 111{ 112 struct ata_channel *ch = device_get_softc(dev); 113 int error, rid; 114 115 /* check that we have a virgin channel to attach */ 116 if (ch->r_irq) 117 return EEXIST; 118 119 /* initialize the softc basics */ 120 ch->dev = dev; 121 ch->state = ATA_IDLE; 122 bzero(&ch->state_mtx, sizeof(struct mtx)); 123 mtx_init(&ch->state_mtx, "ATA state lock", NULL, MTX_DEF); 124 bzero(&ch->queue_mtx, sizeof(struct mtx)); 125 mtx_init(&ch->queue_mtx, "ATA queue lock", NULL, MTX_DEF); 126 TAILQ_INIT(&ch->ata_queue); 127 128 /* reset the controller HW, the channel and device(s) */ 129 while (ATA_LOCKING(dev, ATA_LF_LOCK) != ch->unit) 130 tsleep(&error, PRIBIO, "ataatch", 1); 131 ATA_RESET(dev); 132 ATA_LOCKING(dev, ATA_LF_UNLOCK); 133 134 /* setup interrupt delivery */ 135 rid = ATA_IRQ_RID; 136 ch->r_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 137 RF_SHAREABLE | RF_ACTIVE); 138 if (!ch->r_irq) { 139 device_printf(dev, "unable to allocate interrupt\n"); 140 return ENXIO; 141 } 142 if ((error = bus_setup_intr(dev, ch->r_irq, ATA_INTR_FLAGS, 143 ata_interrupt, ch, &ch->ih))) { 144 device_printf(dev, "unable to setup interrupt\n"); 145 return error; 146 } 147 148 /* probe and attach devices on this channel unless we are in early boot */ 149 if (!ata_delayed_attach) 150 ata_identify(dev); 151 return 0; 152} 153 154int 155ata_detach(device_t dev) 156{ 157 struct ata_channel *ch = device_get_softc(dev); 158 device_t *children; 159 int nchildren, i; 160 161 /* check that we have a valid channel to detach */ 162 if (!ch->r_irq) 163 return ENXIO; 164 165 /* detach & delete all children */ 166 if (!device_get_children(dev, &children, &nchildren)) { 167 for (i = 0; i < nchildren; i++) 168 if (children[i]) 169 device_delete_child(dev, children[i]); 170 free(children, M_TEMP); 171 } 172 173 /* release resources */ 174 bus_teardown_intr(dev, ch->r_irq, ch->ih); 175 bus_release_resource(dev, SYS_RES_IRQ, ATA_IRQ_RID, ch->r_irq); 176 ch->r_irq = NULL; 177 mtx_destroy(&ch->state_mtx); 178 mtx_destroy(&ch->queue_mtx); 179 return 0; 180} 181 182int 183ata_reinit(device_t dev) 184{ 185 struct ata_channel *ch = device_get_softc(dev); 186 struct ata_request *request; 187 device_t *children; 188 int nchildren, i; 189 190 /* check that we have a valid channel to reinit */ 191 if (!ch || !ch->r_irq) 192 return ENXIO; 193 194 if (bootverbose) 195 device_printf(dev, "reiniting channel ..\n"); 196 197 /* poll for locking the channel */ 198 while (ATA_LOCKING(dev, ATA_LF_LOCK) != ch->unit) 199 tsleep(&dev, PRIBIO, "atarini", 1); 200 201 /* unconditionally grap the channel lock */ 202 mtx_lock(&ch->state_mtx); 203 ch->state = ATA_STALL_QUEUE; 204 mtx_unlock(&ch->state_mtx); 205 206 /* reset the controller HW, the channel and device(s) */ 207 ATA_RESET(dev); 208 209 /* reinit the children and delete any that fails */ 210 if (!device_get_children(dev, &children, &nchildren)) { 211 mtx_lock(&Giant); /* newbus suckage it needs Giant */ 212 for (i = 0; i < nchildren; i++) { 213 if (children[i] && device_is_attached(children[i])) 214 if (ATA_REINIT(children[i])) { 215 /* 216 * if we have a running request and its device matches 217 * this child we need to inform the request that the 218 * device is gone and remove it from ch->running 219 */ 220 mtx_lock(&ch->state_mtx); 221 if (ch->running && ch->running->dev == children[i]) { 222 callout_stop(&ch->running->callout); 223 request = ch->running; 224 ch->running = NULL; 225 } 226 else 227 request = NULL; 228 mtx_unlock(&ch->state_mtx); 229 230 if (request) { 231 request->result = ENXIO; 232 device_printf(request->dev, 233 "FAILURE - device detached\n"); 234 235 /* if not timeout finish request here */ 236 if (!(request->flags & ATA_R_TIMEOUT)) 237 ata_finish(request); 238 } 239 device_delete_child(dev, children[i]); 240 } 241 } 242 free(children, M_TEMP); 243 mtx_unlock(&Giant); /* newbus suckage dealt with, release Giant */ 244 } 245 246 /* catch request in ch->running if we havn't already */ 247 mtx_lock(&ch->state_mtx); 248 if ((request = ch->running)) 249 callout_stop(&request->callout); 250 ch->running = NULL; 251 mtx_unlock(&ch->state_mtx); 252 253 /* if we got one put it on the queue again */ 254 if (request) { 255 device_printf(request->dev, 256 "WARNING - %s requeued due to channel reset", 257 ata_cmd2str(request)); 258 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL))) 259 printf(" LBA=%llu", (unsigned long long)request->u.ata.lba); 260 printf("\n"); 261 request->flags |= ATA_R_REQUEUE; 262 ata_queue_request(request); 263 } 264 265 /* we're done release the channel for new work */ 266 mtx_lock(&ch->state_mtx); 267 ch->state = ATA_IDLE; 268 mtx_unlock(&ch->state_mtx); 269 ATA_LOCKING(dev, ATA_LF_UNLOCK); 270 271 if (bootverbose) 272 device_printf(dev, "reinit done ..\n"); 273 274 /* kick off requests on the queue */ 275 ata_start(dev); 276 return 0; 277} 278 279int 280ata_suspend(device_t dev) 281{ 282 struct ata_channel *ch; 283 284 /* check for valid device */ 285 if (!dev || !(ch = device_get_softc(dev))) 286 return ENXIO; 287 288 /* wait for the channel to be IDLE before entering suspend mode */ 289 while (1) { 290 mtx_lock(&ch->state_mtx); 291 if (ch->state == ATA_IDLE) { 292 ch->state = ATA_ACTIVE; 293 mtx_unlock(&ch->state_mtx); 294 break; 295 } 296 mtx_unlock(&ch->state_mtx); 297 tsleep(ch, PRIBIO, "atasusp", hz/10); 298 } 299 ATA_LOCKING(dev, ATA_LF_UNLOCK); 300 return 0; 301} 302 303int 304ata_resume(device_t dev) 305{ 306 struct ata_channel *ch; 307 int error; 308 309 /* check for valid device */ 310 if (!dev || !(ch = device_get_softc(dev))) 311 return ENXIO; 312 313 /* reinit the devices, we dont know what mode/state they are in */ 314 error = ata_reinit(dev); 315 316 /* kick off requests on the queue */ 317 ata_start(dev); 318 return error; 319} 320 321static void 322ata_interrupt(void *data) 323{ 324 struct ata_channel *ch = (struct ata_channel *)data; 325 struct ata_request *request; 326 327 mtx_lock(&ch->state_mtx); 328 do { 329 /* do we have a running request */ 330 if (!(request = ch->running)) 331 break; 332 333 ATA_DEBUG_RQ(request, "interrupt"); 334 335 /* ignore interrupt if device is busy */ 336 if (ATA_IDX_INB(ch, ATA_ALTSTAT) & ATA_S_BUSY) { 337 DELAY(100); 338 if (ATA_IDX_INB(ch, ATA_ALTSTAT) & ATA_S_BUSY) 339 break; 340 } 341 342 /* check for the right state */ 343 if (ch->state != ATA_ACTIVE && ch->state != ATA_STALL_QUEUE) { 344 device_printf(request->dev, "interrupt on idle channel ignored\n"); 345 break; 346 } 347 348 /* 349 * we have the HW locks, so end the tranaction for this request 350 * if it finishes immediately otherwise wait for next interrupt 351 */ 352 if (ch->hw.end_transaction(request) == ATA_OP_FINISHED) { 353 ch->running = NULL; 354 if (ch->state == ATA_ACTIVE) 355 ch->state = ATA_IDLE; 356 mtx_unlock(&ch->state_mtx); 357 ATA_LOCKING(ch->dev, ATA_LF_UNLOCK); 358 ata_finish(request); 359 return; 360 } 361 } while (0); 362 mtx_unlock(&ch->state_mtx); 363} 364 365/* 366 * device related interfaces 367 */ 368static int 369ata_ioctl(struct cdev *dev, u_long cmd, caddr_t data, 370 int32_t flag, struct thread *td) 371{ 372 device_t device, *children; 373 struct ata_ioc_devices *devices = (struct ata_ioc_devices *)data; 374 int *value = (int *)data; 375 int i, nchildren, error = ENOTTY; 376 377 switch (cmd) { 378 case IOCATAGMAXCHANNEL: 379 *value = devclass_get_maxunit(ata_devclass); 380 error = 0; 381 break; 382 383 case IOCATAREINIT: 384 if (*value > devclass_get_maxunit(ata_devclass) || 385 !(device = devclass_get_device(ata_devclass, *value))) 386 return ENXIO; 387 error = ata_reinit(device); 388 ata_start(device); 389 break; 390 391 case IOCATAATTACH: 392 if (*value > devclass_get_maxunit(ata_devclass) || 393 !(device = devclass_get_device(ata_devclass, *value))) 394 return ENXIO; 395 /* XXX SOS should enable channel HW on controller */ 396 error = ata_attach(device); 397 break; 398 399 case IOCATADETACH: 400 if (*value > devclass_get_maxunit(ata_devclass) || 401 !(device = devclass_get_device(ata_devclass, *value))) 402 return ENXIO; 403 error = ata_detach(device); 404 /* XXX SOS should disable channel HW on controller */ 405 break; 406 407 case IOCATADEVICES: 408 if (devices->channel > devclass_get_maxunit(ata_devclass) || 409 !(device = devclass_get_device(ata_devclass, devices->channel))) 410 return ENXIO; 411 bzero(devices->name[0], 32); 412 bzero(&devices->params[0], sizeof(struct ata_params)); 413 bzero(devices->name[1], 32); 414 bzero(&devices->params[1], sizeof(struct ata_params)); 415 if (!device_get_children(device, &children, &nchildren)) { 416 for (i = 0; i < nchildren; i++) { 417 if (children[i] && device_is_attached(children[i])) { 418 struct ata_device *atadev = device_get_softc(children[i]); 419 420 if (atadev->unit == ATA_MASTER) { 421 strncpy(devices->name[0], 422 device_get_nameunit(children[i]), 32); 423 bcopy(&atadev->param, &devices->params[0], 424 sizeof(struct ata_params)); 425 } 426 if (atadev->unit == ATA_SLAVE) { 427 strncpy(devices->name[1], 428 device_get_nameunit(children[i]), 32); 429 bcopy(&atadev->param, &devices->params[1], 430 sizeof(struct ata_params)); 431 } 432 } 433 } 434 free(children, M_TEMP); 435 error = 0; 436 } 437 else 438 error = ENODEV; 439 break; 440 441 default: 442 if (ata_raid_ioctl_func) 443 error = ata_raid_ioctl_func(cmd, data); 444 } 445 return error; 446} 447 448int 449ata_device_ioctl(device_t dev, u_long cmd, caddr_t data) 450{ 451 struct ata_device *atadev = device_get_softc(dev); 452 struct ata_ioc_request *ioc_request = (struct ata_ioc_request *)data; 453 struct ata_params *params = (struct ata_params *)data; 454 int *mode = (int *)data; 455 struct ata_request *request; 456 caddr_t buf; 457 int error; 458 459 switch (cmd) { 460 case IOCATAREQUEST: 461 if (!(buf = malloc(ioc_request->count, M_ATA, M_NOWAIT))) { 462 return ENOMEM; 463 } 464 if (!(request = ata_alloc_request())) { 465 free(buf, M_ATA); 466 return ENOMEM; 467 } 468 if (ioc_request->flags & ATA_CMD_WRITE) { 469 error = copyin(ioc_request->data, buf, ioc_request->count); 470 if (error) { 471 free(buf, M_ATA); 472 ata_free_request(request); 473 return error; 474 } 475 } 476 request->dev = dev; 477 if (ioc_request->flags & ATA_CMD_ATAPI) { 478 request->flags = ATA_R_ATAPI; 479 bcopy(ioc_request->u.atapi.ccb, request->u.atapi.ccb, 16); 480 } 481 else { 482 request->u.ata.command = ioc_request->u.ata.command; 483 request->u.ata.feature = ioc_request->u.ata.feature; 484 request->u.ata.lba = ioc_request->u.ata.lba; 485 request->u.ata.count = ioc_request->u.ata.count; 486 } 487 request->timeout = ioc_request->timeout; 488 request->data = buf; 489 request->bytecount = ioc_request->count; 490 request->transfersize = request->bytecount; 491 if (ioc_request->flags & ATA_CMD_CONTROL) 492 request->flags |= ATA_R_CONTROL; 493 if (ioc_request->flags & ATA_CMD_READ) 494 request->flags |= ATA_R_READ; 495 if (ioc_request->flags & ATA_CMD_WRITE) 496 request->flags |= ATA_R_WRITE; 497 ata_queue_request(request); 498 if (!(request->flags & ATA_R_ATAPI)) { 499 ioc_request->u.ata.command = request->u.ata.command; 500 ioc_request->u.ata.feature = request->u.ata.feature; 501 ioc_request->u.ata.lba = request->u.ata.lba; 502 ioc_request->u.ata.count = request->u.ata.count; 503 } 504 ioc_request->error = request->result; 505 if (ioc_request->flags & ATA_CMD_READ) 506 error = copyout(buf, ioc_request->data, ioc_request->count); 507 else 508 error = 0; 509 free(buf, M_ATA); 510 ata_free_request(request); 511 return error; 512 513 case IOCATAGPARM: 514 bcopy(&atadev->param, params, sizeof(struct ata_params)); 515 return 0; 516 517 case IOCATASMODE: 518 atadev->mode = *mode; 519 ATA_SETMODE(device_get_parent(dev), dev); 520 return 0; 521 522 case IOCATAGMODE: 523 *mode = atadev->mode; 524 return 0; 525 default: 526 return ENOTTY; 527 } 528} 529 530static void 531ata_boot_attach(void) 532{ 533 struct ata_channel *ch; 534 int ctlr; 535 536 mtx_lock(&Giant); /* newbus suckage it needs Giant */ 537 538 /* kick of probe and attach on all channels */ 539 for (ctlr = 0; ctlr < devclass_get_maxunit(ata_devclass); ctlr++) { 540 if ((ch = devclass_get_softc(ata_devclass, ctlr))) { 541 ata_identify(ch->dev); 542 } 543 } 544 545 /* release the hook that got us here, we are only needed once during boot */ 546 if (ata_delayed_attach) { 547 config_intrhook_disestablish(ata_delayed_attach); 548 ata_delayed_attach = NULL; 549 free(ata_delayed_attach, M_TEMP); 550 } 551 552 mtx_unlock(&Giant); /* newbus suckage dealt with, release Giant */ 553} 554 555 556/* 557 * misc support functions 558 */ 559static device_t 560ata_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 574static int 575ata_getparam(device_t parent, struct ata_device *atadev) 576{ 577 struct ata_channel *ch = device_get_softc(parent); 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 sprintf(buffer, "%.40s/%.8s", atacap->model, atacap->revision); 635 device_set_desc_copy(atadev->dev, buffer); 636 if (bootverbose) 637 printf("ata%d-%s: pio=%s wdma=%s udma=%s cable=%s wire\n", 638 ch->unit, 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 (atadev->param.config & ATA_PROTO_ATAPI) { 645 if (atapi_dma && ch->dma && 646 (atadev->param.config & ATA_DRQ_MASK) != ATA_DRQ_INTR && 647 ata_umode(&atadev->param) >= ATA_UDMA2) 648 atadev->mode = ATA_DMA_MAX; 649 } 650 else { 651 if (ata_dma && ch->dma && 652 (ata_umode(&atadev->param) > 0 || 653 ata_wmode(&atadev->param) > 0)) 654 atadev->mode = ATA_DMA_MAX; 655 } 656 } 657 else { 658 if (!error) 659 error = ENXIO; 660 } 661 return error; 662} 663 664int 665ata_identify(device_t dev) 666{ 667 struct ata_channel *ch = device_get_softc(dev); 668 struct ata_device *master = NULL, *slave = NULL; 669 device_t master_child = NULL, slave_child = NULL; 670 int master_unit = -1, slave_unit = -1; 671 672 if (ch->devices & (ATA_ATA_MASTER | ATA_ATAPI_MASTER)) { 673 if (!(master = malloc(sizeof(struct ata_device), 674 M_ATA, M_NOWAIT | M_ZERO))) { 675 device_printf(dev, "out of memory\n"); 676 return ENOMEM; 677 } 678 master->unit = ATA_MASTER; 679 } 680 if (ch->devices & (ATA_ATA_SLAVE | ATA_ATAPI_SLAVE)) { 681 if (!(slave = malloc(sizeof(struct ata_device), 682 M_ATA, M_NOWAIT | M_ZERO))) { 683 free(master, M_ATA); 684 device_printf(dev, "out of memory\n"); 685 return ENOMEM; 686 } 687 slave->unit = ATA_SLAVE; 688 } 689 690#ifdef ATA_STATIC_ID 691 if (ch->devices & ATA_ATA_MASTER) 692 master_unit = (device_get_unit(dev) << 1); 693#endif 694 if (master && !(master_child = ata_add_child(dev, master, master_unit))) { 695 free(master, M_ATA); 696 master = NULL; 697 } 698#ifdef ATA_STATIC_ID 699 if (ch->devices & ATA_ATA_SLAVE) 700 slave_unit = (device_get_unit(dev) << 1) + 1; 701#endif 702 if (slave && !(slave_child = ata_add_child(dev, slave, slave_unit))) { 703 free(slave, M_ATA); 704 slave = NULL; 705 } 706 707 if (slave && ata_getparam(dev, slave)) { 708 device_delete_child(dev, slave_child); 709 free(slave, M_ATA); 710 } 711 if (master && ata_getparam(dev, master)) { 712 device_delete_child(dev, master_child); 713 free(master, M_ATA); 714 } 715 716 bus_generic_probe(dev); 717 bus_generic_attach(dev); 718 return 0; 719} 720 721void 722ata_default_registers(device_t dev) 723{ 724 struct ata_channel *ch = device_get_softc(dev); 725 726 /* fill in the defaults from whats setup already */ 727 ch->r_io[ATA_ERROR].res = ch->r_io[ATA_FEATURE].res; 728 ch->r_io[ATA_ERROR].offset = ch->r_io[ATA_FEATURE].offset; 729 ch->r_io[ATA_IREASON].res = ch->r_io[ATA_COUNT].res; 730 ch->r_io[ATA_IREASON].offset = ch->r_io[ATA_COUNT].offset; 731 ch->r_io[ATA_STATUS].res = ch->r_io[ATA_COMMAND].res; 732 ch->r_io[ATA_STATUS].offset = ch->r_io[ATA_COMMAND].offset; 733 ch->r_io[ATA_ALTSTAT].res = ch->r_io[ATA_CONTROL].res; 734 ch->r_io[ATA_ALTSTAT].offset = ch->r_io[ATA_CONTROL].offset; 735} 736 737void 738ata_modify_if_48bit(struct ata_request *request) 739{ 740 struct ata_channel *ch = device_get_softc(device_get_parent(request->dev)); 741 struct ata_device *atadev = device_get_softc(request->dev); 742 743 atadev->flags &= ~ATA_D_48BIT_ACTIVE; 744 745 if ((request->u.ata.lba >= ATA_MAX_28BIT_LBA || 746 request->u.ata.count > 256) && 747 atadev->param.support.command2 & ATA_SUPPORT_ADDRESS48) { 748 749 /* translate command into 48bit version */ 750 switch (request->u.ata.command) { 751 case ATA_READ: 752 request->u.ata.command = ATA_READ48; 753 break; 754 case ATA_READ_MUL: 755 request->u.ata.command = ATA_READ_MUL48; 756 break; 757 case ATA_READ_DMA: 758 if (ch->flags & ATA_NO_48BIT_DMA) { 759 if (request->transfersize > DEV_BSIZE) 760 request->u.ata.command = ATA_READ_MUL48; 761 else 762 request->u.ata.command = ATA_READ48; 763 request->flags &= ~ATA_R_DMA; 764 } 765 else 766 request->u.ata.command = ATA_READ_DMA48; 767 break; 768 case ATA_READ_DMA_QUEUED: 769 if (ch->flags & ATA_NO_48BIT_DMA) { 770 if (request->transfersize > DEV_BSIZE) 771 request->u.ata.command = ATA_READ_MUL48; 772 else 773 request->u.ata.command = ATA_READ48; 774 request->flags &= ~ATA_R_DMA; 775 } 776 else 777 request->u.ata.command = ATA_READ_DMA_QUEUED48; 778 break; 779 case ATA_WRITE: 780 request->u.ata.command = ATA_WRITE48; 781 break; 782 case ATA_WRITE_MUL: 783 request->u.ata.command = ATA_WRITE_MUL48; 784 break; 785 case ATA_WRITE_DMA: 786 if (ch->flags & ATA_NO_48BIT_DMA) { 787 if (request->transfersize > DEV_BSIZE) 788 request->u.ata.command = ATA_WRITE_MUL48; 789 else 790 request->u.ata.command = ATA_WRITE48; 791 request->flags &= ~ATA_R_DMA; 792 } 793 else 794 request->u.ata.command = ATA_WRITE_DMA48; 795 break; 796 case ATA_WRITE_DMA_QUEUED: 797 if (ch->flags & ATA_NO_48BIT_DMA) { 798 if (request->transfersize > DEV_BSIZE) 799 request->u.ata.command = ATA_WRITE_MUL48; 800 else 801 request->u.ata.command = ATA_WRITE48; 802 request->u.ata.command = ATA_WRITE48; 803 request->flags &= ~ATA_R_DMA; 804 } 805 else 806 request->u.ata.command = ATA_WRITE_DMA_QUEUED48; 807 break; 808 case ATA_FLUSHCACHE: 809 request->u.ata.command = ATA_FLUSHCACHE48; 810 break; 811 default: 812 return; 813 } 814 atadev->flags |= ATA_D_48BIT_ACTIVE; 815 } 816} 817 818void 819ata_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 828char * 829ata_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 858int 859ata_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 882int 883ata_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 894int 895ata_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 916int 917ata_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 936static void 937bswap(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 945static void 946btrim(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 957static void 958bpack(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 */ 984static int 985ata_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 1020static moduledata_t ata_moduledata = { "ata", ata_module_event_handler, NULL }; 1021DECLARE_MODULE(ata, ata_moduledata, SI_SUB_CONFIGURE, SI_ORDER_SECOND); 1022MODULE_VERSION(ata, 1); 1023 1024static void 1025ata_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} 1033SYSINIT(ata_register, SI_SUB_DRIVERS, SI_ORDER_SECOND, ata_init, NULL); 1034 1035static void 1036ata_uninit(void) 1037{ 1038 uma_zdestroy(ata_composite_zone); 1039 uma_zdestroy(ata_request_zone); 1040} 1041SYSUNINIT(ata_unregister, SI_SUB_DRIVERS, SI_ORDER_SECOND, ata_uninit, NULL); 1042