1 /*- 2 * Copyright (c) 1998 - 2006 Søren 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 1.279 2007/02/23 16:25:08 jhb Exp $ 27 */ 28 29 #include "opt_ata.h" 30 31 #include <sys/param.h> 32 #include <sys/bus.h> 33 #include <sys/callout.h> 34 #include <sys/conf.h> 35 #include <sys/ctype.h> 36 #include <sys/device.h> 37 #include <sys/endian.h> 38 #include <sys/kernel.h> 39 #include <sys/libkern.h> 40 #include <sys/lock.h> /* for {get,rel}_mplock() */ 41 #include <sys/malloc.h> 42 #include <sys/module.h> 43 #include <sys/nata.h> 44 #include <sys/objcache.h> 45 #include <sys/queue.h> 46 #include <sys/sysctl.h> 47 #include <sys/systm.h> 48 49 #include <sys/spinlock2.h> 50 #include <sys/mplock2.h> 51 52 #include "ata-all.h" 53 #include "ata_if.h" 54 55 /* device structure */ 56 static d_ioctl_t ata_ioctl; 57 static struct dev_ops ata_ops = { 58 { "ata", 159, 0 }, 59 .d_open = nullopen, 60 .d_close = nullclose, 61 .d_ioctl = ata_ioctl, 62 }; 63 64 /* prototypes */ 65 #if 0 66 static void ata_boot_attach(void); 67 #endif 68 static device_t ata_add_child(device_t, struct ata_device *, int); 69 static int ata_getparam(struct ata_device *, int); 70 static void bswap(int8_t *, int); 71 static void btrim(int8_t *, int); 72 static void bpack(int8_t *, int8_t *, int); 73 74 /* global vars */ 75 MALLOC_DEFINE(M_ATA, "ata_generic", "ATA driver generic layer"); 76 int (*ata_raid_ioctl_func)(u_long cmd, caddr_t data) = NULL; 77 devclass_t ata_devclass; 78 struct objcache *ata_request_cache; 79 struct objcache *ata_composite_cache; 80 struct objcache_malloc_args ata_request_malloc_args = { 81 sizeof(struct ata_request), M_ATA }; 82 struct objcache_malloc_args ata_composite_malloc_args = { 83 sizeof(struct ata_composite), M_ATA }; 84 int ata_wc = 1; 85 86 /* local vars */ 87 static int ata_dma = 1; 88 static int atapi_dma = 1; 89 90 /* sysctl vars */ 91 SYSCTL_NODE(_hw, OID_AUTO, ata, CTLFLAG_RD, 0, "ATA driver parameters"); 92 TUNABLE_INT("hw.ata.ata_dma", &ata_dma); 93 SYSCTL_INT(_hw_ata, OID_AUTO, ata_dma, CTLFLAG_RW, &ata_dma, 0, 94 "ATA disk DMA mode control"); 95 TUNABLE_INT("hw.ata.atapi_dma", &atapi_dma); 96 SYSCTL_INT(_hw_ata, OID_AUTO, atapi_dma, CTLFLAG_RW, &atapi_dma, 0, 97 "ATAPI device DMA mode control"); 98 TUNABLE_INT("hw.ata.wc", &ata_wc); 99 SYSCTL_INT(_hw_ata, OID_AUTO, ata_wc, CTLFLAG_RW, &ata_wc, 0, 100 "ATA disk write caching"); 101 102 /* 103 * newbus device interface related functions 104 */ 105 int 106 ata_probe(device_t dev) 107 { 108 return 0; 109 } 110 111 int 112 ata_attach(device_t dev) 113 { 114 struct ata_channel *ch = device_get_softc(dev); 115 int error, rid; 116 117 /* check that we have a virgin channel to attach */ 118 if (ch->r_irq) 119 return EEXIST; 120 121 /* initialize the softc basics */ 122 ch->dev = dev; 123 ch->state = ATA_IDLE; 124 spin_init(&ch->state_mtx, "ataattach_state"); 125 spin_init(&ch->queue_mtx, "ataattach_queue"); 126 ata_queue_init(ch); 127 128 /* reset the controller HW, the channel and device(s) */ 129 while (ATA_LOCKING(dev, ATA_LF_LOCK) != ch->unit) 130 tsleep(&error, 0, "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 (driver_intr_t *)ata_interrupt, ch, &ch->ih, 144 NULL))) { 145 device_printf(dev, "unable to setup interrupt\n"); 146 return error; 147 } 148 149 /* probe and attach devices on this channel unless we are in early boot */ 150 ata_identify(dev); 151 return 0; 152 } 153 154 int 155 ata_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 /* grap the channel lock so no new requests gets launched */ 166 spin_lock(&ch->state_mtx); 167 ch->state |= ATA_STALL_QUEUE; 168 spin_unlock(&ch->state_mtx); 169 170 /* detach & delete all children */ 171 if (!device_get_children(dev, &children, &nchildren)) { 172 for (i = 0; i < nchildren; i++) 173 if (children[i]) 174 device_delete_child(dev, children[i]); 175 kfree(children, M_TEMP); 176 } 177 178 /* release resources */ 179 bus_teardown_intr(dev, ch->r_irq, ch->ih); 180 bus_release_resource(dev, SYS_RES_IRQ, ATA_IRQ_RID, ch->r_irq); 181 ch->r_irq = NULL; 182 spin_uninit(&ch->state_mtx); 183 spin_uninit(&ch->queue_mtx); 184 return 0; 185 } 186 187 int 188 ata_reinit(device_t dev) 189 { 190 struct ata_channel *ch = device_get_softc(dev); 191 struct ata_request *request; 192 device_t *children; 193 int nchildren, i; 194 195 /* check that we have a valid channel to reinit */ 196 if (!ch || !ch->r_irq) 197 return ENXIO; 198 199 if (bootverbose) 200 device_printf(dev, "reiniting channel ..\n"); 201 202 /* poll for locking the channel */ 203 while (ATA_LOCKING(dev, ATA_LF_LOCK) != ch->unit) 204 tsleep(&dev, 0, "atarini", 1); 205 206 /* catch eventual request in ch->running */ 207 spin_lock(&ch->state_mtx); 208 if ((request = ch->running)) 209 callout_stop(&request->callout); 210 ch->running = NULL; 211 212 /* unconditionally grap the channel lock */ 213 ch->state |= ATA_STALL_QUEUE; 214 spin_unlock(&ch->state_mtx); 215 216 /* reset the controller HW, the channel and device(s) */ 217 ATA_RESET(dev); 218 219 /* reinit the children and delete any that fails */ 220 if (!device_get_children(dev, &children, &nchildren)) { 221 get_mplock(); 222 for (i = 0; i < nchildren; i++) { 223 /* did any children go missing ? */ 224 if (children[i] && device_is_attached(children[i]) && 225 ATA_REINIT(children[i])) { 226 /* 227 * if we had a running request and its device matches 228 * this child we need to inform the request that the 229 * device is gone. 230 */ 231 if (request && request->dev == children[i]) { 232 request->result = ENXIO; 233 device_printf(request->dev, "FAILURE - device detached\n"); 234 235 /* if not timeout finish request here */ 236 if (!(request->flags & ATA_R_TIMEOUT)) 237 ata_finish(request); 238 request = NULL; 239 } 240 device_delete_child(dev, children[i]); 241 } 242 } 243 kfree(children, M_TEMP); 244 rel_mplock(); 245 } 246 247 /* if we still have a good request put it on the queue again */ 248 if (request && !(request->flags & ATA_R_TIMEOUT)) { 249 device_printf(request->dev, 250 "WARNING - %s requeued due to channel reset", 251 ata_cmd2str(request)); 252 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL))) 253 kprintf(" LBA=%ju", request->u.ata.lba); 254 kprintf("\n"); 255 request->flags |= ATA_R_REQUEUE; 256 ata_queue_request(request); 257 } 258 259 /* we're done release the channel for new work */ 260 spin_lock(&ch->state_mtx); 261 ch->state = ATA_IDLE; 262 spin_unlock(&ch->state_mtx); 263 ATA_LOCKING(dev, ATA_LF_UNLOCK); 264 265 if (bootverbose) 266 device_printf(dev, "reinit done ..\n"); 267 268 /* kick off requests on the queue */ 269 ata_start(dev); 270 return 0; 271 } 272 273 int 274 ata_suspend(device_t dev) 275 { 276 struct ata_channel *ch; 277 278 /* check for valid device */ 279 if (!dev || !(ch = device_get_softc(dev))) 280 return ENXIO; 281 282 /* wait for the channel to be IDLE or detached before suspending */ 283 while (ch->r_irq) { 284 spin_lock(&ch->state_mtx); 285 if (ch->state == ATA_IDLE) { 286 ch->state = ATA_ACTIVE; 287 spin_unlock(&ch->state_mtx); 288 break; 289 } 290 spin_unlock(&ch->state_mtx); 291 tsleep(ch, 0, "atasusp", hz/10); 292 } 293 ATA_LOCKING(dev, ATA_LF_UNLOCK); 294 return 0; 295 } 296 297 int 298 ata_resume(device_t dev) 299 { 300 struct ata_channel *ch; 301 int error; 302 303 /* check for valid device */ 304 if (!dev || !(ch = device_get_softc(dev))) 305 return ENXIO; 306 307 /* reinit the devices, we dont know what mode/state they are in */ 308 error = ata_reinit(dev); 309 310 /* kick off requests on the queue */ 311 ata_start(dev); 312 return error; 313 } 314 315 int 316 ata_interrupt(void *data) 317 { 318 struct ata_channel *ch = (struct ata_channel *)data; 319 struct ata_request *request; 320 321 spin_lock(&ch->state_mtx); 322 do { 323 /* 324 * Ignore interrupt if its not for us. This may also have the 325 * side effect of processing events unrelated to I/O requests. 326 */ 327 if (ch->hw.status && !ch->hw.status(ch->dev)) 328 break; 329 330 /* 331 * Check if we have a running request, and make sure it has been 332 * completely queued. Otherwise the channel status may indicate 333 * not-busy when, in fact, the command had not yet been issued. 334 */ 335 if ((request = ch->running) == NULL) 336 break; 337 if ((request->flags & ATA_R_HWCMDQUEUED) == 0) { 338 kprintf("ata_interrupt: early interrupt\n"); 339 break; 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(&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(&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_WAITOK | M_NULLOK))) { 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 #if 0 538 539 static void 540 ata_boot_attach(void) 541 { 542 struct ata_channel *ch; 543 int ctlr; 544 545 get_mplock(); 546 547 /* kick of probe and attach on all channels */ 548 for (ctlr = 0; ctlr < devclass_get_maxunit(ata_devclass); ctlr++) { 549 if ((ch = devclass_get_softc(ata_devclass, ctlr))) { 550 ata_identify(ch->dev); 551 } 552 } 553 554 rel_mplock(); 555 } 556 557 #endif 558 559 560 /* 561 * misc support functions 562 */ 563 static device_t 564 ata_add_child(device_t parent, struct ata_device *atadev, int unit) 565 { 566 device_t child; 567 568 if ((child = device_add_child(parent, NULL, unit))) { 569 device_set_softc(child, atadev); 570 device_quiet(child); 571 atadev->dev = child; 572 atadev->max_iosize = DEV_BSIZE; 573 atadev->mode = ATA_PIO_MAX; 574 } 575 return child; 576 } 577 578 static int 579 ata_getparam(struct ata_device *atadev, int init) 580 { 581 struct ata_channel *ch = device_get_softc(device_get_parent(atadev->dev)); 582 struct ata_request *request; 583 u_int8_t command = 0; 584 int error = ENOMEM, retries = 2; 585 586 if (ch->devices & 587 (atadev->unit == ATA_MASTER ? ATA_ATA_MASTER : ATA_ATA_SLAVE)) 588 command = ATA_ATA_IDENTIFY; 589 if (ch->devices & 590 (atadev->unit == ATA_MASTER ? ATA_ATAPI_MASTER : ATA_ATAPI_SLAVE)) 591 command = ATA_ATAPI_IDENTIFY; 592 if (!command) 593 return ENXIO; 594 595 while (retries-- > 0 && error) { 596 if (!(request = ata_alloc_request())) 597 break; 598 request->dev = atadev->dev; 599 request->timeout = 1; 600 request->retries = 0; 601 request->u.ata.command = command; 602 request->flags = (ATA_R_READ|ATA_R_AT_HEAD|ATA_R_DIRECT|ATA_R_QUIET); 603 request->data = (void *)&atadev->param; 604 request->bytecount = sizeof(struct ata_params); 605 request->donecount = 0; 606 request->transfersize = DEV_BSIZE; 607 ata_queue_request(request); 608 error = request->result; 609 ata_free_request(request); 610 } 611 612 if (!error && (isprint(atadev->param.model[0]) || 613 isprint(atadev->param.model[1]))) { 614 struct ata_params *atacap = &atadev->param; 615 char buffer[64]; 616 int16_t *ptr; 617 618 for (ptr = (int16_t *)atacap; 619 ptr < (int16_t *)atacap + sizeof(struct ata_params)/2; ptr++) { 620 *ptr = le16toh(*ptr); 621 } 622 if (!(!strncmp(atacap->model, "FX", 2) || 623 !strncmp(atacap->model, "NEC", 3) || 624 !strncmp(atacap->model, "Pioneer", 7) || 625 !strncmp(atacap->model, "SHARP", 5))) { 626 bswap(atacap->model, sizeof(atacap->model)); 627 bswap(atacap->revision, sizeof(atacap->revision)); 628 bswap(atacap->serial, sizeof(atacap->serial)); 629 } 630 btrim(atacap->model, sizeof(atacap->model)); 631 bpack(atacap->model, atacap->model, sizeof(atacap->model)); 632 btrim(atacap->revision, sizeof(atacap->revision)); 633 bpack(atacap->revision, atacap->revision, sizeof(atacap->revision)); 634 btrim(atacap->serial, sizeof(atacap->serial)); 635 bpack(atacap->serial, atacap->serial, sizeof(atacap->serial)); 636 637 if (bootverbose) 638 kprintf("ata%d-%s: pio=%s wdma=%s udma=%s cable=%s wire\n", 639 device_get_unit(ch->dev), 640 atadev->unit == ATA_MASTER ? "master" : "slave", 641 ata_mode2str(ata_pmode(atacap)), 642 ata_mode2str(ata_wmode(atacap)), 643 ata_mode2str(ata_umode(atacap)), 644 (atacap->hwres & ATA_CABLE_ID) ? "80":"40"); 645 646 if (init) { 647 ksprintf(buffer, "%.40s/%.8s", atacap->model, atacap->revision); 648 device_set_desc_copy(atadev->dev, buffer); 649 if ((atadev->param.config & ATA_PROTO_ATAPI) && 650 (atadev->param.config != ATA_CFA_MAGIC1) && 651 (atadev->param.config != ATA_CFA_MAGIC2)) { 652 if (atapi_dma && ch->dma && 653 (atadev->param.config & ATA_DRQ_MASK) != ATA_DRQ_INTR && 654 ata_umode(&atadev->param) >= ATA_UDMA2) 655 atadev->mode = ATA_DMA_MAX; 656 } 657 else { 658 if (ata_dma && ch->dma && 659 (ata_umode(&atadev->param) > 0 || 660 ata_wmode(&atadev->param) > 0)) 661 atadev->mode = ATA_DMA_MAX; 662 } 663 } 664 } 665 else { 666 if (!error) 667 error = ENXIO; 668 } 669 return error; 670 } 671 672 int 673 ata_identify(device_t dev) 674 { 675 struct ata_channel *ch = device_get_softc(dev); 676 struct ata_device *master = NULL, *slave = NULL; 677 device_t master_child = NULL, slave_child = NULL; 678 int master_unit = -1, slave_unit = -1; 679 680 if (ch->devices & (ATA_ATA_MASTER | ATA_ATAPI_MASTER)) { 681 if (!(master = kmalloc(sizeof(struct ata_device), 682 M_ATA, M_INTWAIT | M_ZERO))) { 683 device_printf(dev, "out of memory\n"); 684 return ENOMEM; 685 } 686 master->unit = ATA_MASTER; 687 } 688 if (ch->devices & (ATA_ATA_SLAVE | ATA_ATAPI_SLAVE)) { 689 if (!(slave = kmalloc(sizeof(struct ata_device), 690 M_ATA, M_INTWAIT | M_ZERO))) { 691 kfree(master, M_ATA); 692 device_printf(dev, "out of memory\n"); 693 return ENOMEM; 694 } 695 slave->unit = ATA_SLAVE; 696 } 697 698 #ifdef ATA_STATIC_ID 699 if (ch->devices & ATA_ATA_MASTER) 700 master_unit = (device_get_unit(dev) << 1); 701 #endif 702 if (master && !(master_child = ata_add_child(dev, master, master_unit))) { 703 kfree(master, M_ATA); 704 master = NULL; 705 } 706 #ifdef ATA_STATIC_ID 707 if (ch->devices & ATA_ATA_SLAVE) 708 slave_unit = (device_get_unit(dev) << 1) + 1; 709 #endif 710 if (slave && !(slave_child = ata_add_child(dev, slave, slave_unit))) { 711 kfree(slave, M_ATA); 712 slave = NULL; 713 } 714 715 if (slave && ata_getparam(slave, 1)) { 716 device_delete_child(dev, slave_child); 717 kfree(slave, M_ATA); 718 } 719 if (master && ata_getparam(master, 1)) { 720 device_delete_child(dev, master_child); 721 kfree(master, M_ATA); 722 } 723 724 bus_generic_probe(dev); 725 bus_generic_attach(dev); 726 return 0; 727 } 728 729 void 730 ata_default_registers(device_t dev) 731 { 732 struct ata_channel *ch = device_get_softc(dev); 733 734 /* fill in the defaults from whats setup already */ 735 ch->r_io[ATA_ERROR].res = ch->r_io[ATA_FEATURE].res; 736 ch->r_io[ATA_ERROR].offset = ch->r_io[ATA_FEATURE].offset; 737 ch->r_io[ATA_IREASON].res = ch->r_io[ATA_COUNT].res; 738 ch->r_io[ATA_IREASON].offset = ch->r_io[ATA_COUNT].offset; 739 ch->r_io[ATA_STATUS].res = ch->r_io[ATA_COMMAND].res; 740 ch->r_io[ATA_STATUS].offset = ch->r_io[ATA_COMMAND].offset; 741 ch->r_io[ATA_ALTSTAT].res = ch->r_io[ATA_CONTROL].res; 742 ch->r_io[ATA_ALTSTAT].offset = ch->r_io[ATA_CONTROL].offset; 743 } 744 745 void 746 ata_modify_if_48bit(struct ata_request *request) 747 { 748 struct ata_channel *ch = device_get_softc(device_get_parent(request->dev)); 749 struct ata_device *atadev = device_get_softc(request->dev); 750 751 atadev->flags &= ~ATA_D_48BIT_ACTIVE; 752 753 if ((request->u.ata.lba + request->u.ata.count >= ATA_MAX_28BIT_LBA || 754 request->u.ata.count > 256) && 755 atadev->param.support.command2 & ATA_SUPPORT_ADDRESS48) { 756 757 /* translate command into 48bit version */ 758 switch (request->u.ata.command) { 759 case ATA_READ: 760 request->u.ata.command = ATA_READ48; 761 break; 762 case ATA_READ_MUL: 763 request->u.ata.command = ATA_READ_MUL48; 764 break; 765 case ATA_READ_DMA: 766 if (ch->flags & ATA_NO_48BIT_DMA) { 767 if (request->transfersize > DEV_BSIZE) 768 request->u.ata.command = ATA_READ_MUL48; 769 else 770 request->u.ata.command = ATA_READ48; 771 request->flags &= ~ATA_R_DMA; 772 } 773 else 774 request->u.ata.command = ATA_READ_DMA48; 775 break; 776 case ATA_READ_DMA_QUEUED: 777 if (ch->flags & ATA_NO_48BIT_DMA) { 778 if (request->transfersize > DEV_BSIZE) 779 request->u.ata.command = ATA_READ_MUL48; 780 else 781 request->u.ata.command = ATA_READ48; 782 request->flags &= ~ATA_R_DMA; 783 } 784 else 785 request->u.ata.command = ATA_READ_DMA_QUEUED48; 786 break; 787 case ATA_WRITE: 788 request->u.ata.command = ATA_WRITE48; 789 break; 790 case ATA_WRITE_MUL: 791 request->u.ata.command = ATA_WRITE_MUL48; 792 break; 793 case ATA_WRITE_DMA: 794 if (ch->flags & ATA_NO_48BIT_DMA) { 795 if (request->transfersize > DEV_BSIZE) 796 request->u.ata.command = ATA_WRITE_MUL48; 797 else 798 request->u.ata.command = ATA_WRITE48; 799 request->flags &= ~ATA_R_DMA; 800 } 801 else 802 request->u.ata.command = ATA_WRITE_DMA48; 803 break; 804 case ATA_WRITE_DMA_QUEUED: 805 if (ch->flags & ATA_NO_48BIT_DMA) { 806 if (request->transfersize > DEV_BSIZE) 807 request->u.ata.command = ATA_WRITE_MUL48; 808 else 809 request->u.ata.command = ATA_WRITE48; 810 request->u.ata.command = ATA_WRITE48; 811 request->flags &= ~ATA_R_DMA; 812 } 813 else 814 request->u.ata.command = ATA_WRITE_DMA_QUEUED48; 815 break; 816 case ATA_FLUSHCACHE: 817 request->u.ata.command = ATA_FLUSHCACHE48; 818 break; 819 case ATA_READ_NATIVE_MAX_ADDDRESS: 820 request->u.ata.command = ATA_READ_NATIVE_MAX_ADDDRESS48; 821 break; 822 case ATA_SET_MAX_ADDRESS: 823 request->u.ata.command = ATA_SET_MAX_ADDRESS48; 824 break; 825 default: 826 return; 827 } 828 atadev->flags |= ATA_D_48BIT_ACTIVE; 829 } 830 } 831 832 void 833 ata_udelay(int interval) 834 { 835 /* 836 * We can't use tsleep here, because we might be called from callout 837 * context. 838 */ 839 if (1 || interval < (1000000/hz)) 840 DELAY(interval); 841 else 842 tsleep(&interval, 0, "ataslp", 1 + interval / (1000000 / hz)); 843 } 844 845 char * 846 ata_mode2str(int mode) 847 { 848 switch (mode) { 849 case -1: return "UNSUPPORTED"; 850 case ATA_PIO0: return "PIO0"; 851 case ATA_PIO1: return "PIO1"; 852 case ATA_PIO2: return "PIO2"; 853 case ATA_PIO3: return "PIO3"; 854 case ATA_PIO4: return "PIO4"; 855 case ATA_WDMA0: return "WDMA0"; 856 case ATA_WDMA1: return "WDMA1"; 857 case ATA_WDMA2: return "WDMA2"; 858 case ATA_UDMA0: return "UDMA16"; 859 case ATA_UDMA1: return "UDMA25"; 860 case ATA_UDMA2: return "UDMA33"; 861 case ATA_UDMA3: return "UDMA40"; 862 case ATA_UDMA4: return "UDMA66"; 863 case ATA_UDMA5: return "UDMA100"; 864 case ATA_UDMA6: return "UDMA133"; 865 case ATA_SA150: return "SATA150"; 866 case ATA_SA300: return "SATA300"; 867 case ATA_USB: return "USB"; 868 case ATA_USB1: return "USB1"; 869 case ATA_USB2: return "USB2"; 870 default: 871 if (mode & ATA_DMA_MASK) 872 return "BIOSDMA"; 873 else 874 return "BIOSPIO"; 875 } 876 } 877 878 int 879 ata_pmode(struct ata_params *ap) 880 { 881 if (ap->atavalid & ATA_FLAG_64_70) { 882 if (ap->apiomodes & 0x02) 883 return ATA_PIO4; 884 if (ap->apiomodes & 0x01) 885 return ATA_PIO3; 886 } 887 if (ap->mwdmamodes & 0x04) 888 return ATA_PIO4; 889 if (ap->mwdmamodes & 0x02) 890 return ATA_PIO3; 891 if (ap->mwdmamodes & 0x01) 892 return ATA_PIO2; 893 if ((ap->retired_piomode & ATA_RETIRED_PIO_MASK) == 0x200) 894 return ATA_PIO2; 895 if ((ap->retired_piomode & ATA_RETIRED_PIO_MASK) == 0x100) 896 return ATA_PIO1; 897 if ((ap->retired_piomode & ATA_RETIRED_PIO_MASK) == 0x000) 898 return ATA_PIO0; 899 return ATA_PIO0; 900 } 901 902 int 903 ata_wmode(struct ata_params *ap) 904 { 905 if (ap->mwdmamodes & 0x04) 906 return ATA_WDMA2; 907 if (ap->mwdmamodes & 0x02) 908 return ATA_WDMA1; 909 if (ap->mwdmamodes & 0x01) 910 return ATA_WDMA0; 911 return -1; 912 } 913 914 int 915 ata_umode(struct ata_params *ap) 916 { 917 if (ap->atavalid & ATA_FLAG_88) { 918 if (ap->udmamodes & 0x40) 919 return ATA_UDMA6; 920 if (ap->udmamodes & 0x20) 921 return ATA_UDMA5; 922 if (ap->udmamodes & 0x10) 923 return ATA_UDMA4; 924 if (ap->udmamodes & 0x08) 925 return ATA_UDMA3; 926 if (ap->udmamodes & 0x04) 927 return ATA_UDMA2; 928 if (ap->udmamodes & 0x02) 929 return ATA_UDMA1; 930 if (ap->udmamodes & 0x01) 931 return ATA_UDMA0; 932 } 933 return -1; 934 } 935 936 int 937 ata_limit_mode(device_t dev, int mode, int maxmode) 938 { 939 struct ata_device *atadev = device_get_softc(dev); 940 941 if (maxmode && mode > maxmode) 942 mode = maxmode; 943 944 if (mode >= ATA_UDMA0 && ata_umode(&atadev->param) > 0) 945 return min(mode, ata_umode(&atadev->param)); 946 947 if (mode >= ATA_WDMA0 && ata_wmode(&atadev->param) > 0) 948 return min(mode, ata_wmode(&atadev->param)); 949 950 if (mode > ata_pmode(&atadev->param)) 951 return min(mode, ata_pmode(&atadev->param)); 952 953 return mode; 954 } 955 956 static void 957 bswap(int8_t *buf, int len) 958 { 959 u_int16_t *ptr = (u_int16_t*)(buf + len); 960 961 while (--ptr >= (u_int16_t*)buf) 962 *ptr = ntohs(*ptr); 963 } 964 965 static void 966 btrim(int8_t *buf, int len) 967 { 968 int8_t *ptr; 969 970 for (ptr = buf; ptr < buf+len; ++ptr) 971 if (!*ptr || *ptr == '_') 972 *ptr = ' '; 973 for (ptr = buf + len - 1; ptr >= buf && *ptr == ' '; --ptr) 974 *ptr = 0; 975 } 976 977 static void 978 bpack(int8_t *src, int8_t *dst, int len) 979 { 980 int i, j, blank; 981 982 for (i = j = blank = 0 ; i < len; i++) { 983 if (blank && src[i] == ' ') continue; 984 if (blank && src[i] != ' ') { 985 dst[j++] = src[i]; 986 blank = 0; 987 continue; 988 } 989 if (src[i] == ' ') { 990 blank = 1; 991 if (i == 0) 992 continue; 993 } 994 dst[j++] = src[i]; 995 } 996 if (j < len) 997 dst[j] = 0x00; 998 } 999 1000 1001 /* 1002 * module handeling 1003 */ 1004 static int 1005 ata_module_event_handler(module_t mod, int what, void *arg) 1006 { 1007 /* static because we need the reference at destruction time */ 1008 static cdev_t atacdev; 1009 1010 switch (what) { 1011 case MOD_LOAD: 1012 /* register controlling device */ 1013 atacdev = make_dev(&ata_ops, 0, UID_ROOT, GID_OPERATOR, 0600, "ata"); 1014 reference_dev(atacdev); 1015 return 0; 1016 1017 case MOD_UNLOAD: 1018 /* deregister controlling device */ 1019 destroy_dev(atacdev); 1020 dev_ops_remove_all(&ata_ops); 1021 return 0; 1022 1023 default: 1024 return EOPNOTSUPP; 1025 } 1026 } 1027 1028 static moduledata_t ata_moduledata = { "ata", ata_module_event_handler, NULL }; 1029 DECLARE_MODULE(ata, ata_moduledata, SI_SUB_CONFIGURE, SI_ORDER_SECOND); 1030 MODULE_VERSION(ata, 1); 1031 1032 /* 1033 * Construct a completely zero'ed ata_request. On objcache_put(), an 1034 * ata_request object is also zero'ed, so objcache_get() is guaranteed to give 1035 * completely zero'ed objects without spending too much time. 1036 */ 1037 static boolean_t 1038 ata_request_cache_ctor(void *obj, void *private, int ocflags) 1039 { 1040 struct ata_request *arp = obj; 1041 1042 bzero(arp, sizeof(struct ata_request)); 1043 return(TRUE); 1044 } 1045 1046 /* 1047 * Construct a completely zero'ed ata_composite. On objcache_put(), an 1048 * ata_composite object is also zero'ed, so objcache_get() is guaranteed to give 1049 * completely zero'ed objects without spending too much time. 1050 */ 1051 static boolean_t 1052 ata_composite_cache_ctor(void *obj, void *private, int ocflags) 1053 { 1054 struct ata_composite *acp = obj; 1055 1056 bzero(acp, sizeof(struct ata_composite)); 1057 return(TRUE); 1058 } 1059 1060 static void 1061 ata_init(void) 1062 { 1063 ata_request_cache = objcache_create("ata_request", 0, 0, 1064 ata_request_cache_ctor, NULL, NULL, 1065 objcache_malloc_alloc, 1066 objcache_malloc_free, 1067 &ata_request_malloc_args); 1068 ata_composite_cache = objcache_create("ata_composite", 0, 0, 1069 ata_composite_cache_ctor, NULL, NULL, 1070 objcache_malloc_alloc, 1071 objcache_malloc_free, 1072 &ata_composite_malloc_args); 1073 } 1074 SYSINIT(ata_register, SI_SUB_DRIVERS, SI_ORDER_SECOND, ata_init, NULL); 1075 1076 static void 1077 ata_uninit(void) 1078 { 1079 objcache_destroy(ata_composite_cache); 1080 objcache_destroy(ata_request_cache); 1081 } 1082 SYSUNINIT(ata_unregister, SI_SUB_DRIVERS, SI_ORDER_SECOND, ata_uninit, NULL); 1083