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/mplock2.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 #if 0 65 static void ata_boot_attach(void); 66 #endif 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 struct objcache *ata_request_cache; 78 struct objcache *ata_composite_cache; 79 struct objcache_malloc_args ata_request_malloc_args = { 80 sizeof(struct ata_request), M_ATA }; 81 struct objcache_malloc_args ata_composite_malloc_args = { 82 sizeof(struct ata_composite), M_ATA }; 83 int ata_wc = 1; 84 85 /* local vars */ 86 static int ata_dma = 1; 87 static int atapi_dma = 1; 88 89 /* sysctl vars */ 90 SYSCTL_NODE(_hw, OID_AUTO, ata, CTLFLAG_RD, 0, "ATA driver parameters"); 91 TUNABLE_INT("hw.ata.ata_dma", &ata_dma); 92 SYSCTL_INT(_hw_ata, OID_AUTO, ata_dma, CTLFLAG_RW, &ata_dma, 0, 93 "ATA disk DMA mode control"); 94 TUNABLE_INT("hw.ata.atapi_dma", &atapi_dma); 95 SYSCTL_INT(_hw_ata, OID_AUTO, atapi_dma, CTLFLAG_RW, &atapi_dma, 0, 96 "ATAPI device DMA mode control"); 97 TUNABLE_INT("hw.ata.wc", &ata_wc); 98 SYSCTL_INT(_hw_ata, OID_AUTO, ata_wc, CTLFLAG_RW, &ata_wc, 0, 99 "ATA disk write caching"); 100 101 /* 102 * newbus device interface related functions 103 */ 104 int 105 ata_probe(device_t dev) 106 { 107 return 0; 108 } 109 110 int 111 ata_attach(device_t dev) 112 { 113 struct ata_channel *ch = device_get_softc(dev); 114 int error, rid; 115 116 /* check that we have a virgin channel to attach */ 117 if (ch->r_irq) 118 return EEXIST; 119 120 /* initialize the softc basics */ 121 ch->dev = dev; 122 ch->state = ATA_IDLE; 123 lockinit(&ch->state_mtx, "ataattach_state", 0, 0); 124 lockinit(&ch->queue_mtx, "ataattach_queue", 0, 0); 125 ata_queue_init(ch); 126 127 /* reset the controller HW, the channel and device(s) */ 128 while (ATA_LOCKING(dev, ATA_LF_LOCK) != ch->unit) 129 tsleep(&error, 0, "ataatch", 1); 130 ATA_RESET(dev); 131 ATA_LOCKING(dev, ATA_LF_UNLOCK); 132 133 /* setup interrupt delivery */ 134 rid = ATA_IRQ_RID; 135 ch->r_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 136 RF_SHAREABLE | RF_ACTIVE); 137 if (!ch->r_irq) { 138 device_printf(dev, "unable to allocate interrupt\n"); 139 return ENXIO; 140 } 141 if ((error = bus_setup_intr(dev, ch->r_irq, ATA_INTR_FLAGS, 142 (driver_intr_t *)ata_interrupt, ch, &ch->ih, 143 NULL))) { 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 ata_identify(dev); 150 return 0; 151 } 152 153 int 154 ata_detach(device_t dev) 155 { 156 struct ata_channel *ch = device_get_softc(dev); 157 device_t *children; 158 int nchildren, i; 159 160 /* check that we have a valid channel to detach */ 161 if (!ch->r_irq) 162 return ENXIO; 163 164 /* grap the channel lock so no new requests gets launched */ 165 lockmgr(&ch->state_mtx, LK_EXCLUSIVE); 166 ch->state |= ATA_STALL_QUEUE; 167 lockmgr(&ch->state_mtx, LK_RELEASE); 168 169 /* detach & delete all children */ 170 if (!device_get_children(dev, &children, &nchildren)) { 171 for (i = 0; i < nchildren; i++) 172 if (children[i]) 173 device_delete_child(dev, children[i]); 174 kfree(children, M_TEMP); 175 } 176 177 /* release resources */ 178 bus_teardown_intr(dev, ch->r_irq, ch->ih); 179 bus_release_resource(dev, SYS_RES_IRQ, ATA_IRQ_RID, ch->r_irq); 180 ch->r_irq = NULL; 181 lockuninit(&ch->state_mtx); 182 lockuninit(&ch->queue_mtx); 183 return 0; 184 } 185 186 int 187 ata_reinit(device_t dev) 188 { 189 struct ata_channel *ch = device_get_softc(dev); 190 struct ata_request *request; 191 device_t *children; 192 int nchildren, i; 193 194 /* check that we have a valid channel to reinit */ 195 if (!ch || !ch->r_irq) 196 return ENXIO; 197 198 if (bootverbose) 199 device_printf(dev, "reiniting channel ..\n"); 200 201 /* poll for locking the channel */ 202 while (ATA_LOCKING(dev, ATA_LF_LOCK) != ch->unit) 203 tsleep(&dev, 0, "atarini", 1); 204 205 /* catch eventual request in ch->running */ 206 lockmgr(&ch->state_mtx, LK_EXCLUSIVE); 207 if ((request = ch->running)) 208 callout_stop_sync(&request->callout); 209 ch->running = NULL; 210 211 /* unconditionally grap the channel lock */ 212 ch->state |= ATA_STALL_QUEUE; 213 lockmgr(&ch->state_mtx, LK_RELEASE); 214 215 /* reset the controller HW, the channel and device(s) */ 216 ATA_RESET(dev); 217 218 /* reinit the children and delete any that fails */ 219 if (!device_get_children(dev, &children, &nchildren)) { 220 get_mplock(); 221 for (i = 0; i < nchildren; i++) { 222 /* did any children go missing ? */ 223 if (children[i] && device_is_attached(children[i]) && 224 ATA_REINIT(children[i])) { 225 /* 226 * if we had a running request and its device matches 227 * this child we need to inform the request that the 228 * device is gone. 229 */ 230 if (request && request->dev == children[i]) { 231 request->result = ENXIO; 232 device_printf(request->dev, "FAILURE - device detached\n"); 233 234 /* if not timeout finish request here */ 235 if (!(request->flags & ATA_R_TIMEOUT)) 236 ata_finish(request); 237 request = NULL; 238 } 239 device_delete_child(dev, children[i]); 240 } 241 } 242 kfree(children, M_TEMP); 243 rel_mplock(); 244 } 245 246 /* if we still have a good request put it on the queue again */ 247 if (request && !(request->flags & ATA_R_TIMEOUT)) { 248 device_printf(request->dev, 249 "WARNING - %s requeued due to channel reset", 250 ata_cmd2str(request)); 251 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL))) 252 kprintf(" LBA=%ju", request->u.ata.lba); 253 kprintf("\n"); 254 request->flags |= ATA_R_REQUEUE; 255 ata_queue_request(request); 256 } 257 258 /* we're done release the channel for new work */ 259 lockmgr(&ch->state_mtx, LK_EXCLUSIVE); 260 ch->state = ATA_IDLE; 261 lockmgr(&ch->state_mtx, LK_RELEASE); 262 ATA_LOCKING(dev, ATA_LF_UNLOCK); 263 264 if (bootverbose) 265 device_printf(dev, "reinit done ..\n"); 266 267 /* kick off requests on the queue */ 268 ata_start(dev); 269 return 0; 270 } 271 272 int 273 ata_suspend(device_t dev) 274 { 275 struct ata_channel *ch; 276 277 /* check for valid device */ 278 if (!dev || !(ch = device_get_softc(dev))) 279 return ENXIO; 280 281 /* wait for the channel to be IDLE or detached before suspending */ 282 while (ch->r_irq) { 283 lockmgr(&ch->state_mtx, LK_EXCLUSIVE); 284 if (ch->state == ATA_IDLE) { 285 ch->state = ATA_ACTIVE; 286 lockmgr(&ch->state_mtx, LK_RELEASE); 287 break; 288 } 289 lockmgr(&ch->state_mtx, LK_RELEASE); 290 tsleep(ch, 0, "atasusp", hz/10); 291 } 292 ATA_LOCKING(dev, ATA_LF_UNLOCK); 293 return 0; 294 } 295 296 int 297 ata_resume(device_t dev) 298 { 299 struct ata_channel *ch; 300 int error; 301 302 /* check for valid device */ 303 if (!dev || !(ch = device_get_softc(dev))) 304 return ENXIO; 305 306 /* reinit the devices, we dont know what mode/state they are in */ 307 error = ata_reinit(dev); 308 309 /* kick off requests on the queue */ 310 ata_start(dev); 311 return error; 312 } 313 314 int 315 ata_interrupt(void *data) 316 { 317 struct ata_channel *ch = (struct ata_channel *)data; 318 struct ata_request *request; 319 320 lockmgr(&ch->state_mtx, LK_EXCLUSIVE); 321 do { 322 /* 323 * Ignore interrupt if its not for us. This may also have the 324 * side effect of processing events unrelated to I/O requests. 325 */ 326 if (ch->hw.status && !ch->hw.status(ch->dev)) 327 break; 328 329 /* 330 * Check if we have a running request, and make sure it has been 331 * completely queued. Otherwise the channel status may indicate 332 * not-busy when, in fact, the command had not yet been issued. 333 */ 334 if ((request = ch->running) == NULL) 335 break; 336 if ((request->flags & ATA_R_HWCMDQUEUED) == 0) { 337 kprintf("ata_interrupt: early interrupt\n"); 338 break; 339 } 340 341 ATA_DEBUG_RQ(request, "interrupt"); 342 343 /* safetycheck for the right state */ 344 if (ch->state == ATA_IDLE) { 345 device_printf(request->dev, "interrupt on idle channel ignored\n"); 346 break; 347 } 348 349 /* 350 * we have the HW locks, so end the transaction for this request 351 * if it finishes immediately otherwise wait for next interrupt 352 */ 353 if (ch->hw.end_transaction(request) == ATA_OP_FINISHED) { 354 ch->running = NULL; 355 if (ch->state == ATA_ACTIVE) 356 ch->state = ATA_IDLE; 357 lockmgr(&ch->state_mtx, LK_RELEASE); 358 ATA_LOCKING(ch->dev, ATA_LF_UNLOCK); 359 ata_finish(request); 360 return 1; 361 } 362 } while (0); 363 lockmgr(&ch->state_mtx, LK_RELEASE); 364 return 0; 365 } 366 367 /* 368 * device related interfaces 369 */ 370 static int 371 ata_ioctl(struct dev_ioctl_args *ap) 372 { 373 device_t device, *children; 374 struct ata_ioc_devices *devices = (struct ata_ioc_devices *)ap->a_data; 375 int *value = (int *)ap->a_data; 376 int i, nchildren, error = ENOTTY; 377 378 switch (ap->a_cmd) { 379 case IOCATAGMAXCHANNEL: 380 *value = devclass_get_maxunit(ata_devclass); 381 error = 0; 382 break; 383 384 case IOCATAREINIT: 385 if (*value > devclass_get_maxunit(ata_devclass) || 386 !(device = devclass_get_device(ata_devclass, *value))) 387 return ENXIO; 388 error = ata_reinit(device); 389 ata_start(device); 390 break; 391 392 case IOCATAATTACH: 393 if (*value > devclass_get_maxunit(ata_devclass) || 394 !(device = devclass_get_device(ata_devclass, *value))) 395 return ENXIO; 396 /* XXX SOS should enable channel HW on controller */ 397 error = ata_attach(device); 398 break; 399 400 case IOCATADETACH: 401 if (*value > devclass_get_maxunit(ata_devclass) || 402 !(device = devclass_get_device(ata_devclass, *value))) 403 return ENXIO; 404 error = ata_detach(device); 405 /* XXX SOS should disable channel HW on controller */ 406 break; 407 408 case IOCATADEVICES: 409 if (devices->channel > devclass_get_maxunit(ata_devclass) || 410 !(device = devclass_get_device(ata_devclass, devices->channel))) 411 return ENXIO; 412 bzero(devices->name[0], 32); 413 bzero(&devices->params[0], sizeof(struct ata_params)); 414 bzero(devices->name[1], 32); 415 bzero(&devices->params[1], sizeof(struct ata_params)); 416 if (!device_get_children(device, &children, &nchildren)) { 417 for (i = 0; i < nchildren; i++) { 418 if (children[i] && device_is_attached(children[i])) { 419 struct ata_device *atadev = device_get_softc(children[i]); 420 421 if (atadev->unit == ATA_MASTER) { 422 strncpy(devices->name[0], 423 device_get_nameunit(children[i]), 32); 424 bcopy(&atadev->param, &devices->params[0], 425 sizeof(struct ata_params)); 426 } 427 if (atadev->unit == ATA_SLAVE) { 428 strncpy(devices->name[1], 429 device_get_nameunit(children[i]), 32); 430 bcopy(&atadev->param, &devices->params[1], 431 sizeof(struct ata_params)); 432 } 433 } 434 } 435 kfree(children, M_TEMP); 436 error = 0; 437 } 438 else 439 error = ENODEV; 440 break; 441 442 default: 443 if (ata_raid_ioctl_func) 444 error = ata_raid_ioctl_func(ap->a_cmd, ap->a_data); 445 } 446 return error; 447 } 448 449 int 450 ata_device_ioctl(device_t dev, u_long cmd, caddr_t data) 451 { 452 struct ata_device *atadev = device_get_softc(dev); 453 struct ata_ioc_request *ioc_request = (struct ata_ioc_request *)data; 454 struct ata_params *params = (struct ata_params *)data; 455 int *mode = (int *)data; 456 struct ata_request *request; 457 caddr_t buf; 458 int error; 459 460 switch (cmd) { 461 case IOCATAREQUEST: 462 if (!(buf = kmalloc(ioc_request->count, M_ATA, M_WAITOK | M_NULLOK))) { 463 return ENOMEM; 464 } 465 if (!(request = ata_alloc_request())) { 466 kfree(buf, M_ATA); 467 return ENOMEM; 468 } 469 if (ioc_request->flags & ATA_CMD_WRITE) { 470 error = copyin(ioc_request->data, buf, ioc_request->count); 471 if (error) { 472 kfree(buf, M_ATA); 473 ata_free_request(request); 474 return error; 475 } 476 } 477 request->dev = dev; 478 if (ioc_request->flags & ATA_CMD_ATAPI) { 479 request->flags = ATA_R_ATAPI; 480 bcopy(ioc_request->u.atapi.ccb, request->u.atapi.ccb, 16); 481 } 482 else { 483 request->u.ata.command = ioc_request->u.ata.command; 484 request->u.ata.feature = ioc_request->u.ata.feature; 485 request->u.ata.lba = ioc_request->u.ata.lba; 486 request->u.ata.count = ioc_request->u.ata.count; 487 } 488 request->timeout = ioc_request->timeout; 489 request->data = buf; 490 request->bytecount = ioc_request->count; 491 request->transfersize = request->bytecount; 492 if (ioc_request->flags & ATA_CMD_CONTROL) 493 request->flags |= ATA_R_CONTROL; 494 if (ioc_request->flags & ATA_CMD_READ) 495 request->flags |= ATA_R_READ; 496 if (ioc_request->flags & ATA_CMD_WRITE) 497 request->flags |= ATA_R_WRITE; 498 ata_queue_request(request); 499 if (request->flags & ATA_R_ATAPI) { 500 bcopy(&request->u.atapi.sense, &ioc_request->u.atapi.sense, 501 sizeof(struct atapi_sense)); 502 } 503 else { 504 ioc_request->u.ata.command = request->u.ata.command; 505 ioc_request->u.ata.feature = request->u.ata.feature; 506 ioc_request->u.ata.lba = request->u.ata.lba; 507 ioc_request->u.ata.count = request->u.ata.count; 508 } 509 ioc_request->error = request->result; 510 if (ioc_request->flags & ATA_CMD_READ) 511 error = copyout(buf, ioc_request->data, ioc_request->count); 512 else 513 error = 0; 514 kfree(buf, M_ATA); 515 ata_free_request(request); 516 return error; 517 518 case IOCATAGPARM: 519 ata_getparam(atadev, 0); 520 bcopy(&atadev->param, params, sizeof(struct ata_params)); 521 return 0; 522 523 case IOCATASMODE: 524 atadev->mode = *mode; 525 ATA_SETMODE(device_get_parent(dev), dev); 526 return 0; 527 528 case IOCATAGMODE: 529 *mode = atadev->mode; 530 return 0; 531 default: 532 return ENOTTY; 533 } 534 } 535 536 #if 0 537 538 static void 539 ata_boot_attach(void) 540 { 541 struct ata_channel *ch; 542 int ctlr; 543 544 get_mplock(); 545 546 /* kick of probe and attach on all channels */ 547 for (ctlr = 0; ctlr < devclass_get_maxunit(ata_devclass); ctlr++) { 548 if ((ch = devclass_get_softc(ata_devclass, ctlr))) { 549 ata_identify(ch->dev); 550 } 551 } 552 553 rel_mplock(); 554 } 555 556 #endif 557 558 559 /* 560 * misc support functions 561 */ 562 static device_t 563 ata_add_child(device_t parent, struct ata_device *atadev, int unit) 564 { 565 device_t child; 566 567 if ((child = device_add_child(parent, NULL, unit))) { 568 device_set_softc(child, atadev); 569 device_quiet(child); 570 atadev->dev = child; 571 atadev->max_iosize = DEV_BSIZE; 572 atadev->mode = ATA_PIO_MAX; 573 } 574 return child; 575 } 576 577 static int 578 ata_getparam(struct ata_device *atadev, int init) 579 { 580 struct ata_channel *ch = device_get_softc(device_get_parent(atadev->dev)); 581 struct ata_request *request; 582 u_int8_t command = 0; 583 int error = ENOMEM, retries = 2; 584 585 if (ch->devices & 586 (atadev->unit == ATA_MASTER ? ATA_ATA_MASTER : ATA_ATA_SLAVE)) 587 command = ATA_ATA_IDENTIFY; 588 if (ch->devices & 589 (atadev->unit == ATA_MASTER ? ATA_ATAPI_MASTER : ATA_ATAPI_SLAVE)) 590 command = ATA_ATAPI_IDENTIFY; 591 if (!command) 592 return ENXIO; 593 594 while (retries-- > 0 && error) { 595 if (!(request = ata_alloc_request())) 596 break; 597 request->dev = atadev->dev; 598 request->timeout = 1; 599 request->retries = 0; 600 request->u.ata.command = command; 601 request->flags = (ATA_R_READ|ATA_R_AT_HEAD|ATA_R_DIRECT|ATA_R_QUIET); 602 request->data = (void *)&atadev->param; 603 request->bytecount = sizeof(struct ata_params); 604 request->donecount = 0; 605 request->transfersize = DEV_BSIZE; 606 ata_queue_request(request); 607 error = request->result; 608 ata_free_request(request); 609 } 610 611 if (!error && (isprint(atadev->param.model[0]) || 612 isprint(atadev->param.model[1]))) { 613 struct ata_params *atacap = &atadev->param; 614 char buffer[64]; 615 int16_t *ptr; 616 617 for (ptr = (int16_t *)atacap; 618 ptr < (int16_t *)atacap + sizeof(struct ata_params)/2; ptr++) { 619 *ptr = le16toh(*ptr); 620 } 621 if (!(!strncmp(atacap->model, "FX", 2) || 622 !strncmp(atacap->model, "NEC", 3) || 623 !strncmp(atacap->model, "Pioneer", 7) || 624 !strncmp(atacap->model, "SHARP", 5))) { 625 bswap(atacap->model, sizeof(atacap->model)); 626 bswap(atacap->revision, sizeof(atacap->revision)); 627 bswap(atacap->serial, sizeof(atacap->serial)); 628 } 629 btrim(atacap->model, sizeof(atacap->model)); 630 bpack(atacap->model, atacap->model, sizeof(atacap->model)); 631 btrim(atacap->revision, sizeof(atacap->revision)); 632 bpack(atacap->revision, atacap->revision, sizeof(atacap->revision)); 633 btrim(atacap->serial, sizeof(atacap->serial)); 634 bpack(atacap->serial, atacap->serial, sizeof(atacap->serial)); 635 636 if (bootverbose) 637 kprintf("ata%d-%s: pio=%s wdma=%s udma=%s cable=%s wire\n", 638 device_get_unit(ch->dev), 639 atadev->unit == ATA_MASTER ? "master" : "slave", 640 ata_mode2str(ata_pmode(atacap)), 641 ata_mode2str(ata_wmode(atacap)), 642 ata_mode2str(ata_umode(atacap)), 643 (atacap->hwres & ATA_CABLE_ID) ? "80":"40"); 644 645 if (init) { 646 ksprintf(buffer, "%.40s/%.8s", atacap->model, atacap->revision); 647 device_set_desc_copy(atadev->dev, buffer); 648 if ((atadev->param.config & ATA_PROTO_ATAPI) && 649 (atadev->param.config != ATA_CFA_MAGIC1) && 650 (atadev->param.config != ATA_CFA_MAGIC2)) { 651 if (atapi_dma && ch->dma && 652 (atadev->param.config & ATA_DRQ_MASK) != ATA_DRQ_INTR && 653 ata_umode(&atadev->param) >= ATA_UDMA2) 654 atadev->mode = ATA_DMA_MAX; 655 } 656 else { 657 if (ata_dma && ch->dma && 658 (ata_umode(&atadev->param) > 0 || 659 ata_wmode(&atadev->param) > 0)) 660 atadev->mode = ATA_DMA_MAX; 661 } 662 } 663 } 664 else { 665 if (!error) 666 error = ENXIO; 667 } 668 return error; 669 } 670 671 int 672 ata_identify(device_t dev) 673 { 674 struct ata_channel *ch = device_get_softc(dev); 675 struct ata_device *master = NULL, *slave = NULL; 676 device_t master_child = NULL, slave_child = NULL; 677 int master_unit = -1, slave_unit = -1; 678 679 if (ch->devices & (ATA_ATA_MASTER | ATA_ATAPI_MASTER)) { 680 if (!(master = kmalloc(sizeof(struct ata_device), 681 M_ATA, M_INTWAIT | M_ZERO))) { 682 device_printf(dev, "out of memory\n"); 683 return ENOMEM; 684 } 685 master->unit = ATA_MASTER; 686 } 687 if (ch->devices & (ATA_ATA_SLAVE | ATA_ATAPI_SLAVE)) { 688 if (!(slave = kmalloc(sizeof(struct ata_device), 689 M_ATA, M_INTWAIT | M_ZERO))) { 690 kfree(master, M_ATA); 691 device_printf(dev, "out of memory\n"); 692 return ENOMEM; 693 } 694 slave->unit = ATA_SLAVE; 695 } 696 697 #ifdef ATA_STATIC_ID 698 if (ch->devices & ATA_ATA_MASTER) 699 master_unit = (device_get_unit(dev) << 1); 700 #endif 701 if (master && !(master_child = ata_add_child(dev, master, master_unit))) { 702 kfree(master, M_ATA); 703 master = NULL; 704 } 705 #ifdef ATA_STATIC_ID 706 if (ch->devices & ATA_ATA_SLAVE) 707 slave_unit = (device_get_unit(dev) << 1) + 1; 708 #endif 709 if (slave && !(slave_child = ata_add_child(dev, slave, slave_unit))) { 710 kfree(slave, M_ATA); 711 slave = NULL; 712 } 713 714 if (slave && ata_getparam(slave, 1)) { 715 device_delete_child(dev, slave_child); 716 kfree(slave, M_ATA); 717 } 718 if (master && ata_getparam(master, 1)) { 719 device_delete_child(dev, master_child); 720 kfree(master, M_ATA); 721 } 722 723 bus_generic_probe(dev); 724 bus_generic_attach(dev); 725 return 0; 726 } 727 728 void 729 ata_default_registers(device_t dev) 730 { 731 struct ata_channel *ch = device_get_softc(dev); 732 733 /* fill in the defaults from whats setup already */ 734 ch->r_io[ATA_ERROR].res = ch->r_io[ATA_FEATURE].res; 735 ch->r_io[ATA_ERROR].offset = ch->r_io[ATA_FEATURE].offset; 736 ch->r_io[ATA_IREASON].res = ch->r_io[ATA_COUNT].res; 737 ch->r_io[ATA_IREASON].offset = ch->r_io[ATA_COUNT].offset; 738 ch->r_io[ATA_STATUS].res = ch->r_io[ATA_COMMAND].res; 739 ch->r_io[ATA_STATUS].offset = ch->r_io[ATA_COMMAND].offset; 740 ch->r_io[ATA_ALTSTAT].res = ch->r_io[ATA_CONTROL].res; 741 ch->r_io[ATA_ALTSTAT].offset = ch->r_io[ATA_CONTROL].offset; 742 } 743 744 void 745 ata_modify_if_48bit(struct ata_request *request) 746 { 747 struct ata_channel *ch = device_get_softc(device_get_parent(request->dev)); 748 struct ata_device *atadev = device_get_softc(request->dev); 749 750 atadev->flags &= ~ATA_D_48BIT_ACTIVE; 751 752 if ((request->u.ata.lba + request->u.ata.count >= ATA_MAX_28BIT_LBA || 753 request->u.ata.count > 256) && 754 atadev->param.support.command2 & ATA_SUPPORT_ADDRESS48) { 755 756 /* translate command into 48bit version */ 757 switch (request->u.ata.command) { 758 case ATA_READ: 759 request->u.ata.command = ATA_READ48; 760 break; 761 case ATA_READ_MUL: 762 request->u.ata.command = ATA_READ_MUL48; 763 break; 764 case ATA_READ_DMA: 765 if (ch->flags & ATA_NO_48BIT_DMA) { 766 if (request->transfersize > DEV_BSIZE) 767 request->u.ata.command = ATA_READ_MUL48; 768 else 769 request->u.ata.command = ATA_READ48; 770 request->flags &= ~ATA_R_DMA; 771 } 772 else 773 request->u.ata.command = ATA_READ_DMA48; 774 break; 775 case ATA_READ_DMA_QUEUED: 776 if (ch->flags & ATA_NO_48BIT_DMA) { 777 if (request->transfersize > DEV_BSIZE) 778 request->u.ata.command = ATA_READ_MUL48; 779 else 780 request->u.ata.command = ATA_READ48; 781 request->flags &= ~ATA_R_DMA; 782 } 783 else 784 request->u.ata.command = ATA_READ_DMA_QUEUED48; 785 break; 786 case ATA_WRITE: 787 request->u.ata.command = ATA_WRITE48; 788 break; 789 case ATA_WRITE_MUL: 790 request->u.ata.command = ATA_WRITE_MUL48; 791 break; 792 case ATA_WRITE_DMA: 793 if (ch->flags & ATA_NO_48BIT_DMA) { 794 if (request->transfersize > DEV_BSIZE) 795 request->u.ata.command = ATA_WRITE_MUL48; 796 else 797 request->u.ata.command = ATA_WRITE48; 798 request->flags &= ~ATA_R_DMA; 799 } 800 else 801 request->u.ata.command = ATA_WRITE_DMA48; 802 break; 803 case ATA_WRITE_DMA_QUEUED: 804 if (ch->flags & ATA_NO_48BIT_DMA) { 805 if (request->transfersize > DEV_BSIZE) 806 request->u.ata.command = ATA_WRITE_MUL48; 807 else 808 request->u.ata.command = ATA_WRITE48; 809 request->u.ata.command = ATA_WRITE48; 810 request->flags &= ~ATA_R_DMA; 811 } 812 else 813 request->u.ata.command = ATA_WRITE_DMA_QUEUED48; 814 break; 815 case ATA_FLUSHCACHE: 816 request->u.ata.command = ATA_FLUSHCACHE48; 817 break; 818 case ATA_READ_NATIVE_MAX_ADDDRESS: 819 request->u.ata.command = ATA_READ_NATIVE_MAX_ADDDRESS48; 820 break; 821 case ATA_SET_MAX_ADDRESS: 822 request->u.ata.command = ATA_SET_MAX_ADDRESS48; 823 break; 824 default: 825 return; 826 } 827 atadev->flags |= ATA_D_48BIT_ACTIVE; 828 } 829 } 830 831 void 832 ata_udelay(int interval) 833 { 834 /* 835 * We can't use tsleep here, because we might be called from callout 836 * context. 837 */ 838 if (1 || interval < (1000000/hz)) 839 DELAY(interval); 840 else 841 tsleep(&interval, 0, "ataslp", 1 + interval / (1000000 / hz)); 842 } 843 844 char * 845 ata_mode2str(int mode) 846 { 847 switch (mode) { 848 case -1: return "UNSUPPORTED"; 849 case ATA_PIO0: return "PIO0"; 850 case ATA_PIO1: return "PIO1"; 851 case ATA_PIO2: return "PIO2"; 852 case ATA_PIO3: return "PIO3"; 853 case ATA_PIO4: return "PIO4"; 854 case ATA_WDMA0: return "WDMA0"; 855 case ATA_WDMA1: return "WDMA1"; 856 case ATA_WDMA2: return "WDMA2"; 857 case ATA_UDMA0: return "UDMA16"; 858 case ATA_UDMA1: return "UDMA25"; 859 case ATA_UDMA2: return "UDMA33"; 860 case ATA_UDMA3: return "UDMA40"; 861 case ATA_UDMA4: return "UDMA66"; 862 case ATA_UDMA5: return "UDMA100"; 863 case ATA_UDMA6: return "UDMA133"; 864 case ATA_SA150: return "SATA150"; 865 case ATA_SA300: return "SATA300"; 866 case ATA_USB: return "USB"; 867 case ATA_USB1: return "USB1"; 868 case ATA_USB2: return "USB2"; 869 default: 870 if (mode & ATA_DMA_MASK) 871 return "BIOSDMA"; 872 else 873 return "BIOSPIO"; 874 } 875 } 876 877 int 878 ata_pmode(struct ata_params *ap) 879 { 880 if (ap->atavalid & ATA_FLAG_64_70) { 881 if (ap->apiomodes & 0x02) 882 return ATA_PIO4; 883 if (ap->apiomodes & 0x01) 884 return ATA_PIO3; 885 } 886 if (ap->mwdmamodes & 0x04) 887 return ATA_PIO4; 888 if (ap->mwdmamodes & 0x02) 889 return ATA_PIO3; 890 if (ap->mwdmamodes & 0x01) 891 return ATA_PIO2; 892 if ((ap->retired_piomode & ATA_RETIRED_PIO_MASK) == 0x200) 893 return ATA_PIO2; 894 if ((ap->retired_piomode & ATA_RETIRED_PIO_MASK) == 0x100) 895 return ATA_PIO1; 896 if ((ap->retired_piomode & ATA_RETIRED_PIO_MASK) == 0x000) 897 return ATA_PIO0; 898 return ATA_PIO0; 899 } 900 901 int 902 ata_wmode(struct ata_params *ap) 903 { 904 if (ap->mwdmamodes & 0x04) 905 return ATA_WDMA2; 906 if (ap->mwdmamodes & 0x02) 907 return ATA_WDMA1; 908 if (ap->mwdmamodes & 0x01) 909 return ATA_WDMA0; 910 return -1; 911 } 912 913 int 914 ata_umode(struct ata_params *ap) 915 { 916 if (ap->atavalid & ATA_FLAG_88) { 917 if (ap->udmamodes & 0x40) 918 return ATA_UDMA6; 919 if (ap->udmamodes & 0x20) 920 return ATA_UDMA5; 921 if (ap->udmamodes & 0x10) 922 return ATA_UDMA4; 923 if (ap->udmamodes & 0x08) 924 return ATA_UDMA3; 925 if (ap->udmamodes & 0x04) 926 return ATA_UDMA2; 927 if (ap->udmamodes & 0x02) 928 return ATA_UDMA1; 929 if (ap->udmamodes & 0x01) 930 return ATA_UDMA0; 931 } 932 return -1; 933 } 934 935 int 936 ata_limit_mode(device_t dev, int mode, int maxmode) 937 { 938 struct ata_device *atadev = device_get_softc(dev); 939 940 if (maxmode && mode > maxmode) 941 mode = maxmode; 942 943 if (mode >= ATA_UDMA0 && ata_umode(&atadev->param) > 0) 944 return min(mode, ata_umode(&atadev->param)); 945 946 if (mode >= ATA_WDMA0 && ata_wmode(&atadev->param) > 0) 947 return min(mode, ata_wmode(&atadev->param)); 948 949 if (mode > ata_pmode(&atadev->param)) 950 return min(mode, ata_pmode(&atadev->param)); 951 952 return mode; 953 } 954 955 static void 956 bswap(int8_t *buf, int len) 957 { 958 u_int16_t *ptr = (u_int16_t*)(buf + len); 959 960 while (--ptr >= (u_int16_t*)buf) 961 *ptr = ntohs(*ptr); 962 } 963 964 static void 965 btrim(int8_t *buf, int len) 966 { 967 int8_t *ptr; 968 969 for (ptr = buf; ptr < buf+len; ++ptr) 970 if (!*ptr || *ptr == '_') 971 *ptr = ' '; 972 for (ptr = buf + len - 1; ptr >= buf && *ptr == ' '; --ptr) 973 *ptr = 0; 974 } 975 976 static void 977 bpack(int8_t *src, int8_t *dst, int len) 978 { 979 int i, j, blank; 980 981 for (i = j = blank = 0 ; i < len; i++) { 982 if (blank && src[i] == ' ') continue; 983 if (blank && src[i] != ' ') { 984 dst[j++] = src[i]; 985 blank = 0; 986 continue; 987 } 988 if (src[i] == ' ') { 989 blank = 1; 990 if (i == 0) 991 continue; 992 } 993 dst[j++] = src[i]; 994 } 995 if (j < len) 996 dst[j] = 0x00; 997 } 998 999 1000 /* 1001 * module handeling 1002 */ 1003 static int 1004 ata_module_event_handler(module_t mod, int what, void *arg) 1005 { 1006 /* static because we need the reference at destruction time */ 1007 static cdev_t atacdev; 1008 1009 switch (what) { 1010 case MOD_LOAD: 1011 /* register controlling device */ 1012 atacdev = make_dev(&ata_ops, 0, UID_ROOT, GID_OPERATOR, 0600, "ata"); 1013 reference_dev(atacdev); 1014 return 0; 1015 1016 case MOD_UNLOAD: 1017 /* deregister controlling device */ 1018 destroy_dev(atacdev); 1019 dev_ops_remove_all(&ata_ops); 1020 return 0; 1021 1022 default: 1023 return EOPNOTSUPP; 1024 } 1025 } 1026 1027 static moduledata_t ata_moduledata = { "ata", ata_module_event_handler, NULL }; 1028 DECLARE_MODULE(ata, ata_moduledata, SI_SUB_CONFIGURE, SI_ORDER_SECOND); 1029 MODULE_VERSION(ata, 1); 1030 1031 /* 1032 * Construct a completely zero'ed ata_request. On objcache_put(), an 1033 * ata_request object is also zero'ed, so objcache_get() is guaranteed to give 1034 * completely zero'ed objects without spending too much time. 1035 */ 1036 static boolean_t 1037 ata_request_cache_ctor(void *obj, void *private, int ocflags) 1038 { 1039 struct ata_request *arp = obj; 1040 1041 bzero(arp, sizeof(struct ata_request)); 1042 return(TRUE); 1043 } 1044 1045 /* 1046 * Construct a completely zero'ed ata_composite. On objcache_put(), an 1047 * ata_composite object is also zero'ed, so objcache_get() is guaranteed to give 1048 * completely zero'ed objects without spending too much time. 1049 */ 1050 static boolean_t 1051 ata_composite_cache_ctor(void *obj, void *private, int ocflags) 1052 { 1053 struct ata_composite *acp = obj; 1054 1055 bzero(acp, sizeof(struct ata_composite)); 1056 return(TRUE); 1057 } 1058 1059 static void 1060 ata_init(void) 1061 { 1062 ata_request_cache = objcache_create("ata_request", 0, 0, 1063 ata_request_cache_ctor, NULL, NULL, 1064 objcache_malloc_alloc, 1065 objcache_malloc_free, 1066 &ata_request_malloc_args); 1067 ata_composite_cache = objcache_create("ata_composite", 0, 0, 1068 ata_composite_cache_ctor, NULL, NULL, 1069 objcache_malloc_alloc, 1070 objcache_malloc_free, 1071 &ata_composite_malloc_args); 1072 } 1073 SYSINIT(ata_register, SI_SUB_DRIVERS, SI_ORDER_SECOND, ata_init, NULL); 1074 1075 static void 1076 ata_uninit(void) 1077 { 1078 objcache_destroy(ata_composite_cache); 1079 objcache_destroy(ata_request_cache); 1080 } 1081 SYSUNINIT(ata_unregister, SI_SUB_DRIVERS, SI_ORDER_SECOND, ata_uninit, NULL); 1082