1 /*- 2 * Copyright (c) 1998 - 2006 S�ren Schmidt <sos@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer, 10 * without modification, immediately at the beginning of the file. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD: src/sys/dev/ata/ata-all.c,v 1.279 2007/02/23 16:25:08 jhb Exp $ 27 * $DragonFly: src/sys/dev/disk/nata/ata-all.c,v 1.14 2008/03/24 06:41:56 dillon Exp $ 28 */ 29 30 #include "opt_ata.h" 31 32 #include <sys/param.h> 33 #include <sys/bus.h> 34 #include <sys/callout.h> 35 #include <sys/conf.h> 36 #include <sys/ctype.h> 37 #include <sys/device.h> 38 #include <sys/endian.h> 39 #include <sys/kernel.h> 40 #include <sys/libkern.h> 41 #include <sys/lock.h> /* for {get,rel}_mplock() */ 42 #include <sys/malloc.h> 43 #include <sys/module.h> 44 #include <sys/nata.h> 45 #include <sys/objcache.h> 46 #include <sys/queue.h> 47 #include <sys/spinlock2.h> 48 #include <sys/sysctl.h> 49 #include <sys/systm.h> 50 51 #include "ata-all.h" 52 #include "ata_if.h" 53 54 /* device structure */ 55 static d_ioctl_t ata_ioctl; 56 static struct dev_ops ata_ops = { 57 { "ata", 159, 0 }, 58 .d_open = nullopen, 59 .d_close = nullclose, 60 .d_ioctl = ata_ioctl, 61 }; 62 63 /* prototypes */ 64 static void ata_boot_attach(void); 65 static device_t ata_add_child(device_t, struct ata_device *, int); 66 static int ata_getparam(struct ata_device *, int); 67 static void bswap(int8_t *, int); 68 static void btrim(int8_t *, int); 69 static void bpack(int8_t *, int8_t *, int); 70 71 /* global vars */ 72 MALLOC_DEFINE(M_ATA, "ata_generic", "ATA driver generic layer"); 73 int (*ata_raid_ioctl_func)(u_long cmd, caddr_t data) = NULL; 74 devclass_t ata_devclass; 75 struct objcache *ata_request_cache; 76 struct objcache *ata_composite_cache; 77 struct objcache_malloc_args ata_request_malloc_args = { 78 sizeof(struct ata_request), M_ATA }; 79 struct objcache_malloc_args ata_composite_malloc_args = { 80 sizeof(struct ata_composite), M_ATA }; 81 int ata_wc = 1; 82 83 /* local vars */ 84 static int ata_dma = 1; 85 static int atapi_dma = 1; 86 87 /* sysctl vars */ 88 SYSCTL_NODE(_hw, OID_AUTO, ata, CTLFLAG_RD, 0, "ATA driver parameters"); 89 TUNABLE_INT("hw.ata.ata_dma", &ata_dma); 90 SYSCTL_INT(_hw_ata, OID_AUTO, ata_dma, CTLFLAG_RW, &ata_dma, 0, 91 "ATA disk DMA mode control"); 92 TUNABLE_INT("hw.ata.atapi_dma", &atapi_dma); 93 SYSCTL_INT(_hw_ata, OID_AUTO, atapi_dma, CTLFLAG_RW, &atapi_dma, 0, 94 "ATAPI device DMA mode control"); 95 TUNABLE_INT("hw.ata.wc", &ata_wc); 96 SYSCTL_INT(_hw_ata, OID_AUTO, ata_wc, CTLFLAG_RW, &ata_wc, 0, 97 "ATA disk write caching"); 98 99 /* 100 * newbus device interface related functions 101 */ 102 int 103 ata_probe(device_t dev) 104 { 105 return 0; 106 } 107 108 int 109 ata_attach(device_t dev) 110 { 111 struct ata_channel *ch = device_get_softc(dev); 112 int error, rid; 113 114 /* check that we have a virgin channel to attach */ 115 if (ch->r_irq) 116 return EEXIST; 117 118 /* initialize the softc basics */ 119 ch->dev = dev; 120 ch->state = ATA_IDLE; 121 spin_init(&ch->state_mtx); 122 spin_init(&ch->queue_mtx); 123 TAILQ_INIT(&ch->ata_queue); 124 125 /* reset the controller HW, the channel and device(s) */ 126 while (ATA_LOCKING(dev, ATA_LF_LOCK) != ch->unit) 127 tsleep(&error, 0, "ataatch", 1); 128 ATA_RESET(dev); 129 ATA_LOCKING(dev, ATA_LF_UNLOCK); 130 131 /* setup interrupt delivery */ 132 rid = ATA_IRQ_RID; 133 ch->r_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 134 RF_SHAREABLE | RF_ACTIVE); 135 if (!ch->r_irq) { 136 device_printf(dev, "unable to allocate interrupt\n"); 137 return ENXIO; 138 } 139 if ((error = bus_setup_intr(dev, ch->r_irq, ATA_INTR_FLAGS, 140 (driver_intr_t *)ata_interrupt, ch, &ch->ih, 141 NULL))) { 142 device_printf(dev, "unable to setup interrupt\n"); 143 return error; 144 } 145 146 /* probe and attach devices on this channel unless we are in early boot */ 147 ata_identify(dev); 148 return 0; 149 } 150 151 int 152 ata_detach(device_t dev) 153 { 154 struct ata_channel *ch = device_get_softc(dev); 155 device_t *children; 156 int nchildren, i; 157 158 /* check that we have a valid channel to detach */ 159 if (!ch->r_irq) 160 return ENXIO; 161 162 /* grap the channel lock so no new requests gets launched */ 163 spin_lock_wr(&ch->state_mtx); 164 ch->state |= ATA_STALL_QUEUE; 165 spin_unlock_wr(&ch->state_mtx); 166 167 /* detach & delete all children */ 168 if (!device_get_children(dev, &children, &nchildren)) { 169 for (i = 0; i < nchildren; i++) 170 if (children[i]) 171 device_delete_child(dev, children[i]); 172 kfree(children, M_TEMP); 173 } 174 175 /* release resources */ 176 bus_teardown_intr(dev, ch->r_irq, ch->ih); 177 bus_release_resource(dev, SYS_RES_IRQ, ATA_IRQ_RID, ch->r_irq); 178 ch->r_irq = NULL; 179 spin_uninit(&ch->state_mtx); 180 spin_uninit(&ch->queue_mtx); 181 return 0; 182 } 183 184 int 185 ata_reinit(device_t dev) 186 { 187 struct ata_channel *ch = device_get_softc(dev); 188 struct ata_request *request; 189 device_t *children; 190 int nchildren, i; 191 192 /* check that we have a valid channel to reinit */ 193 if (!ch || !ch->r_irq) 194 return ENXIO; 195 196 if (bootverbose) 197 device_printf(dev, "reiniting channel ..\n"); 198 199 /* poll for locking the channel */ 200 while (ATA_LOCKING(dev, ATA_LF_LOCK) != ch->unit) 201 tsleep(&dev, 0, "atarini", 1); 202 203 /* catch eventual request in ch->running */ 204 spin_lock_wr(&ch->state_mtx); 205 if ((request = ch->running)) 206 callout_stop(&request->callout); 207 ch->running = NULL; 208 209 /* unconditionally grap the channel lock */ 210 ch->state |= ATA_STALL_QUEUE; 211 spin_unlock_wr(&ch->state_mtx); 212 213 /* reset the controller HW, the channel and device(s) */ 214 ATA_RESET(dev); 215 216 /* reinit the children and delete any that fails */ 217 if (!device_get_children(dev, &children, &nchildren)) { 218 get_mplock(); 219 for (i = 0; i < nchildren; i++) { 220 /* did any children go missing ? */ 221 if (children[i] && device_is_attached(children[i]) && 222 ATA_REINIT(children[i])) { 223 /* 224 * if we had a running request and its device matches 225 * this child we need to inform the request that the 226 * device is gone. 227 */ 228 if (request && request->dev == children[i]) { 229 request->result = ENXIO; 230 device_printf(request->dev, "FAILURE - device detached\n"); 231 232 /* if not timeout finish request here */ 233 if (!(request->flags & ATA_R_TIMEOUT)) 234 ata_finish(request); 235 request = NULL; 236 } 237 device_delete_child(dev, children[i]); 238 } 239 } 240 kfree(children, M_TEMP); 241 rel_mplock(); 242 } 243 244 /* if we still have a good request put it on the queue again */ 245 if (request && !(request->flags & ATA_R_TIMEOUT)) { 246 device_printf(request->dev, 247 "WARNING - %s requeued due to channel reset", 248 ata_cmd2str(request)); 249 if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL))) 250 kprintf(" LBA=%ju", request->u.ata.lba); 251 kprintf("\n"); 252 request->flags |= ATA_R_REQUEUE; 253 ata_queue_request(request); 254 } 255 256 /* we're done release the channel for new work */ 257 spin_lock_wr(&ch->state_mtx); 258 ch->state = ATA_IDLE; 259 spin_unlock_wr(&ch->state_mtx); 260 ATA_LOCKING(dev, ATA_LF_UNLOCK); 261 262 if (bootverbose) 263 device_printf(dev, "reinit done ..\n"); 264 265 /* kick off requests on the queue */ 266 ata_start(dev); 267 return 0; 268 } 269 270 int 271 ata_suspend(device_t dev) 272 { 273 struct ata_channel *ch; 274 275 /* check for valid device */ 276 if (!dev || !(ch = device_get_softc(dev))) 277 return ENXIO; 278 279 /* wait for the channel to be IDLE or detached before suspending */ 280 while (ch->r_irq) { 281 spin_lock_wr(&ch->state_mtx); 282 if (ch->state == ATA_IDLE) { 283 ch->state = ATA_ACTIVE; 284 spin_unlock_wr(&ch->state_mtx); 285 break; 286 } 287 spin_unlock_wr(&ch->state_mtx); 288 tsleep(ch, 0, "atasusp", hz/10); 289 } 290 ATA_LOCKING(dev, ATA_LF_UNLOCK); 291 return 0; 292 } 293 294 int 295 ata_resume(device_t dev) 296 { 297 struct ata_channel *ch; 298 int error; 299 300 /* check for valid device */ 301 if (!dev || !(ch = device_get_softc(dev))) 302 return ENXIO; 303 304 /* reinit the devices, we dont know what mode/state they are in */ 305 error = ata_reinit(dev); 306 307 /* kick off requests on the queue */ 308 ata_start(dev); 309 return error; 310 } 311 312 int 313 ata_interrupt(void *data) 314 { 315 struct ata_channel *ch = (struct ata_channel *)data; 316 struct ata_request *request; 317 318 spin_lock_wr(&ch->state_mtx); 319 do { 320 /* 321 * Ignore interrupt if its not for us. This may also have the 322 * side effect of processing events unrelated to I/O requests. 323 */ 324 if (ch->hw.status && !ch->hw.status(ch->dev)) 325 break; 326 327 /* 328 * Check if we have a running request, and make sure it has been 329 * completely queued. Otherwise the channel status may indicate 330 * not-busy when, in fact, the command had not yet been issued. 331 */ 332 if ((request = ch->running) == NULL) 333 break; 334 if ((request->flags & ATA_R_HWCMDQUEUED) == 0) { 335 kprintf("ata_interrupt: early interrupt\n"); 336 break; 337 } 338 339 ATA_DEBUG_RQ(request, "interrupt"); 340 341 /* safetycheck for the right state */ 342 if (ch->state == ATA_IDLE) { 343 device_printf(request->dev, "interrupt on idle channel ignored\n"); 344 break; 345 } 346 347 /* 348 * we have the HW locks, so end the transaction for this request 349 * if it finishes immediately otherwise wait for next interrupt 350 */ 351 if (ch->hw.end_transaction(request) == ATA_OP_FINISHED) { 352 ch->running = NULL; 353 if (ch->state == ATA_ACTIVE) 354 ch->state = ATA_IDLE; 355 spin_unlock_wr(&ch->state_mtx); 356 ATA_LOCKING(ch->dev, ATA_LF_UNLOCK); 357 ata_finish(request); 358 return 1; 359 } 360 } while (0); 361 spin_unlock_wr(&ch->state_mtx); 362 return 0; 363 } 364 365 /* 366 * device related interfaces 367 */ 368 static int 369 ata_ioctl(struct dev_ioctl_args *ap) 370 { 371 device_t device, *children; 372 struct ata_ioc_devices *devices = (struct ata_ioc_devices *)ap->a_data; 373 int *value = (int *)ap->a_data; 374 int i, nchildren, error = ENOTTY; 375 376 switch (ap->a_cmd) { 377 case IOCATAGMAXCHANNEL: 378 *value = devclass_get_maxunit(ata_devclass); 379 error = 0; 380 break; 381 382 case IOCATAREINIT: 383 if (*value > devclass_get_maxunit(ata_devclass) || 384 !(device = devclass_get_device(ata_devclass, *value))) 385 return ENXIO; 386 error = ata_reinit(device); 387 ata_start(device); 388 break; 389 390 case IOCATAATTACH: 391 if (*value > devclass_get_maxunit(ata_devclass) || 392 !(device = devclass_get_device(ata_devclass, *value))) 393 return ENXIO; 394 /* XXX SOS should enable channel HW on controller */ 395 error = ata_attach(device); 396 break; 397 398 case IOCATADETACH: 399 if (*value > devclass_get_maxunit(ata_devclass) || 400 !(device = devclass_get_device(ata_devclass, *value))) 401 return ENXIO; 402 error = ata_detach(device); 403 /* XXX SOS should disable channel HW on controller */ 404 break; 405 406 case IOCATADEVICES: 407 if (devices->channel > devclass_get_maxunit(ata_devclass) || 408 !(device = devclass_get_device(ata_devclass, devices->channel))) 409 return ENXIO; 410 bzero(devices->name[0], 32); 411 bzero(&devices->params[0], sizeof(struct ata_params)); 412 bzero(devices->name[1], 32); 413 bzero(&devices->params[1], sizeof(struct ata_params)); 414 if (!device_get_children(device, &children, &nchildren)) { 415 for (i = 0; i < nchildren; i++) { 416 if (children[i] && device_is_attached(children[i])) { 417 struct ata_device *atadev = device_get_softc(children[i]); 418 419 if (atadev->unit == ATA_MASTER) { 420 strncpy(devices->name[0], 421 device_get_nameunit(children[i]), 32); 422 bcopy(&atadev->param, &devices->params[0], 423 sizeof(struct ata_params)); 424 } 425 if (atadev->unit == ATA_SLAVE) { 426 strncpy(devices->name[1], 427 device_get_nameunit(children[i]), 32); 428 bcopy(&atadev->param, &devices->params[1], 429 sizeof(struct ata_params)); 430 } 431 } 432 } 433 kfree(children, M_TEMP); 434 error = 0; 435 } 436 else 437 error = ENODEV; 438 break; 439 440 default: 441 if (ata_raid_ioctl_func) 442 error = ata_raid_ioctl_func(ap->a_cmd, ap->a_data); 443 } 444 return error; 445 } 446 447 int 448 ata_device_ioctl(device_t dev, u_long cmd, caddr_t data) 449 { 450 struct ata_device *atadev = device_get_softc(dev); 451 struct ata_ioc_request *ioc_request = (struct ata_ioc_request *)data; 452 struct ata_params *params = (struct ata_params *)data; 453 int *mode = (int *)data; 454 struct ata_request *request; 455 caddr_t buf; 456 int error; 457 458 switch (cmd) { 459 case IOCATAREQUEST: 460 if (!(buf = kmalloc(ioc_request->count, M_ATA, M_WAITOK | M_NULLOK))) { 461 return ENOMEM; 462 } 463 if (!(request = ata_alloc_request())) { 464 kfree(buf, M_ATA); 465 return ENOMEM; 466 } 467 if (ioc_request->flags & ATA_CMD_WRITE) { 468 error = copyin(ioc_request->data, buf, ioc_request->count); 469 if (error) { 470 kfree(buf, M_ATA); 471 ata_free_request(request); 472 return error; 473 } 474 } 475 request->dev = dev; 476 if (ioc_request->flags & ATA_CMD_ATAPI) { 477 request->flags = ATA_R_ATAPI; 478 bcopy(ioc_request->u.atapi.ccb, request->u.atapi.ccb, 16); 479 } 480 else { 481 request->u.ata.command = ioc_request->u.ata.command; 482 request->u.ata.feature = ioc_request->u.ata.feature; 483 request->u.ata.lba = ioc_request->u.ata.lba; 484 request->u.ata.count = ioc_request->u.ata.count; 485 } 486 request->timeout = ioc_request->timeout; 487 request->data = buf; 488 request->bytecount = ioc_request->count; 489 request->transfersize = request->bytecount; 490 if (ioc_request->flags & ATA_CMD_CONTROL) 491 request->flags |= ATA_R_CONTROL; 492 if (ioc_request->flags & ATA_CMD_READ) 493 request->flags |= ATA_R_READ; 494 if (ioc_request->flags & ATA_CMD_WRITE) 495 request->flags |= ATA_R_WRITE; 496 ata_queue_request(request); 497 if (request->flags & ATA_R_ATAPI) { 498 bcopy(&request->u.atapi.sense, &ioc_request->u.atapi.sense, 499 sizeof(struct atapi_sense)); 500 } 501 else { 502 ioc_request->u.ata.command = request->u.ata.command; 503 ioc_request->u.ata.feature = request->u.ata.feature; 504 ioc_request->u.ata.lba = request->u.ata.lba; 505 ioc_request->u.ata.count = request->u.ata.count; 506 } 507 ioc_request->error = request->result; 508 if (ioc_request->flags & ATA_CMD_READ) 509 error = copyout(buf, ioc_request->data, ioc_request->count); 510 else 511 error = 0; 512 kfree(buf, M_ATA); 513 ata_free_request(request); 514 return error; 515 516 case IOCATAGPARM: 517 ata_getparam(atadev, 0); 518 bcopy(&atadev->param, params, sizeof(struct ata_params)); 519 return 0; 520 521 case IOCATASMODE: 522 atadev->mode = *mode; 523 ATA_SETMODE(device_get_parent(dev), dev); 524 return 0; 525 526 case IOCATAGMODE: 527 *mode = atadev->mode; 528 return 0; 529 default: 530 return ENOTTY; 531 } 532 } 533 534 static void 535 ata_boot_attach(void) 536 { 537 struct ata_channel *ch; 538 int ctlr; 539 540 get_mplock(); 541 542 /* kick of probe and attach on all channels */ 543 for (ctlr = 0; ctlr < devclass_get_maxunit(ata_devclass); ctlr++) { 544 if ((ch = devclass_get_softc(ata_devclass, ctlr))) { 545 ata_identify(ch->dev); 546 } 547 } 548 549 rel_mplock(); 550 } 551 552 553 /* 554 * misc support functions 555 */ 556 static device_t 557 ata_add_child(device_t parent, struct ata_device *atadev, int unit) 558 { 559 device_t child; 560 561 if ((child = device_add_child(parent, NULL, unit))) { 562 device_set_softc(child, atadev); 563 device_quiet(child); 564 atadev->dev = child; 565 atadev->max_iosize = DEV_BSIZE; 566 atadev->mode = ATA_PIO_MAX; 567 } 568 return child; 569 } 570 571 static int 572 ata_getparam(struct ata_device *atadev, int init) 573 { 574 struct ata_channel *ch = device_get_softc(device_get_parent(atadev->dev)); 575 struct ata_request *request; 576 u_int8_t command = 0; 577 int error = ENOMEM, retries = 2; 578 579 if (ch->devices & 580 (atadev->unit == ATA_MASTER ? ATA_ATA_MASTER : ATA_ATA_SLAVE)) 581 command = ATA_ATA_IDENTIFY; 582 if (ch->devices & 583 (atadev->unit == ATA_MASTER ? ATA_ATAPI_MASTER : ATA_ATAPI_SLAVE)) 584 command = ATA_ATAPI_IDENTIFY; 585 if (!command) 586 return ENXIO; 587 588 while (retries-- > 0 && error) { 589 if (!(request = ata_alloc_request())) 590 break; 591 request->dev = atadev->dev; 592 request->timeout = 1; 593 request->retries = 0; 594 request->u.ata.command = command; 595 request->flags = (ATA_R_READ|ATA_R_AT_HEAD|ATA_R_DIRECT|ATA_R_QUIET); 596 request->data = (void *)&atadev->param; 597 request->bytecount = sizeof(struct ata_params); 598 request->donecount = 0; 599 request->transfersize = DEV_BSIZE; 600 ata_queue_request(request); 601 error = request->result; 602 ata_free_request(request); 603 } 604 605 if (!error && (isprint(atadev->param.model[0]) || 606 isprint(atadev->param.model[1]))) { 607 struct ata_params *atacap = &atadev->param; 608 char buffer[64]; 609 int16_t *ptr; 610 611 for (ptr = (int16_t *)atacap; 612 ptr < (int16_t *)atacap + sizeof(struct ata_params)/2; ptr++) { 613 *ptr = le16toh(*ptr); 614 } 615 if (!(!strncmp(atacap->model, "FX", 2) || 616 !strncmp(atacap->model, "NEC", 3) || 617 !strncmp(atacap->model, "Pioneer", 7) || 618 !strncmp(atacap->model, "SHARP", 5))) { 619 bswap(atacap->model, sizeof(atacap->model)); 620 bswap(atacap->revision, sizeof(atacap->revision)); 621 bswap(atacap->serial, sizeof(atacap->serial)); 622 } 623 btrim(atacap->model, sizeof(atacap->model)); 624 bpack(atacap->model, atacap->model, sizeof(atacap->model)); 625 btrim(atacap->revision, sizeof(atacap->revision)); 626 bpack(atacap->revision, atacap->revision, sizeof(atacap->revision)); 627 btrim(atacap->serial, sizeof(atacap->serial)); 628 bpack(atacap->serial, atacap->serial, sizeof(atacap->serial)); 629 630 if (bootverbose) 631 kprintf("ata%d-%s: pio=%s wdma=%s udma=%s cable=%s wire\n", 632 device_get_unit(ch->dev), 633 atadev->unit == ATA_MASTER ? "master" : "slave", 634 ata_mode2str(ata_pmode(atacap)), 635 ata_mode2str(ata_wmode(atacap)), 636 ata_mode2str(ata_umode(atacap)), 637 (atacap->hwres & ATA_CABLE_ID) ? "80":"40"); 638 639 if (init) { 640 ksprintf(buffer, "%.40s/%.8s", atacap->model, atacap->revision); 641 device_set_desc_copy(atadev->dev, buffer); 642 if ((atadev->param.config & ATA_PROTO_ATAPI) && 643 (atadev->param.config != ATA_CFA_MAGIC1) && 644 (atadev->param.config != ATA_CFA_MAGIC2)) { 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 } 658 else { 659 if (!error) 660 error = ENXIO; 661 } 662 return error; 663 } 664 665 int 666 ata_identify(device_t dev) 667 { 668 struct ata_channel *ch = device_get_softc(dev); 669 struct ata_device *master = NULL, *slave = NULL; 670 device_t master_child = NULL, slave_child = NULL; 671 int master_unit = -1, slave_unit = -1; 672 673 if (ch->devices & (ATA_ATA_MASTER | ATA_ATAPI_MASTER)) { 674 if (!(master = kmalloc(sizeof(struct ata_device), 675 M_ATA, M_INTWAIT | M_ZERO))) { 676 device_printf(dev, "out of memory\n"); 677 return ENOMEM; 678 } 679 master->unit = ATA_MASTER; 680 } 681 if (ch->devices & (ATA_ATA_SLAVE | ATA_ATAPI_SLAVE)) { 682 if (!(slave = kmalloc(sizeof(struct ata_device), 683 M_ATA, M_INTWAIT | M_ZERO))) { 684 kfree(master, M_ATA); 685 device_printf(dev, "out of memory\n"); 686 return ENOMEM; 687 } 688 slave->unit = ATA_SLAVE; 689 } 690 691 #ifdef ATA_STATIC_ID 692 if (ch->devices & ATA_ATA_MASTER) 693 master_unit = (device_get_unit(dev) << 1); 694 #endif 695 if (master && !(master_child = ata_add_child(dev, master, master_unit))) { 696 kfree(master, M_ATA); 697 master = NULL; 698 } 699 #ifdef ATA_STATIC_ID 700 if (ch->devices & ATA_ATA_SLAVE) 701 slave_unit = (device_get_unit(dev) << 1) + 1; 702 #endif 703 if (slave && !(slave_child = ata_add_child(dev, slave, slave_unit))) { 704 kfree(slave, M_ATA); 705 slave = NULL; 706 } 707 708 if (slave && ata_getparam(slave, 1)) { 709 device_delete_child(dev, slave_child); 710 kfree(slave, M_ATA); 711 } 712 if (master && ata_getparam(master, 1)) { 713 device_delete_child(dev, master_child); 714 kfree(master, M_ATA); 715 } 716 717 bus_generic_probe(dev); 718 bus_generic_attach(dev); 719 return 0; 720 } 721 722 void 723 ata_default_registers(device_t dev) 724 { 725 struct ata_channel *ch = device_get_softc(dev); 726 727 /* fill in the defaults from whats setup already */ 728 ch->r_io[ATA_ERROR].res = ch->r_io[ATA_FEATURE].res; 729 ch->r_io[ATA_ERROR].offset = ch->r_io[ATA_FEATURE].offset; 730 ch->r_io[ATA_IREASON].res = ch->r_io[ATA_COUNT].res; 731 ch->r_io[ATA_IREASON].offset = ch->r_io[ATA_COUNT].offset; 732 ch->r_io[ATA_STATUS].res = ch->r_io[ATA_COMMAND].res; 733 ch->r_io[ATA_STATUS].offset = ch->r_io[ATA_COMMAND].offset; 734 ch->r_io[ATA_ALTSTAT].res = ch->r_io[ATA_CONTROL].res; 735 ch->r_io[ATA_ALTSTAT].offset = ch->r_io[ATA_CONTROL].offset; 736 } 737 738 void 739 ata_modify_if_48bit(struct ata_request *request) 740 { 741 struct ata_channel *ch = device_get_softc(device_get_parent(request->dev)); 742 struct ata_device *atadev = device_get_softc(request->dev); 743 744 atadev->flags &= ~ATA_D_48BIT_ACTIVE; 745 746 if ((request->u.ata.lba + request->u.ata.count >= ATA_MAX_28BIT_LBA || 747 request->u.ata.count > 256) && 748 atadev->param.support.command2 & ATA_SUPPORT_ADDRESS48) { 749 750 /* translate command into 48bit version */ 751 switch (request->u.ata.command) { 752 case ATA_READ: 753 request->u.ata.command = ATA_READ48; 754 break; 755 case ATA_READ_MUL: 756 request->u.ata.command = ATA_READ_MUL48; 757 break; 758 case ATA_READ_DMA: 759 if (ch->flags & ATA_NO_48BIT_DMA) { 760 if (request->transfersize > DEV_BSIZE) 761 request->u.ata.command = ATA_READ_MUL48; 762 else 763 request->u.ata.command = ATA_READ48; 764 request->flags &= ~ATA_R_DMA; 765 } 766 else 767 request->u.ata.command = ATA_READ_DMA48; 768 break; 769 case ATA_READ_DMA_QUEUED: 770 if (ch->flags & ATA_NO_48BIT_DMA) { 771 if (request->transfersize > DEV_BSIZE) 772 request->u.ata.command = ATA_READ_MUL48; 773 else 774 request->u.ata.command = ATA_READ48; 775 request->flags &= ~ATA_R_DMA; 776 } 777 else 778 request->u.ata.command = ATA_READ_DMA_QUEUED48; 779 break; 780 case ATA_WRITE: 781 request->u.ata.command = ATA_WRITE48; 782 break; 783 case ATA_WRITE_MUL: 784 request->u.ata.command = ATA_WRITE_MUL48; 785 break; 786 case ATA_WRITE_DMA: 787 if (ch->flags & ATA_NO_48BIT_DMA) { 788 if (request->transfersize > DEV_BSIZE) 789 request->u.ata.command = ATA_WRITE_MUL48; 790 else 791 request->u.ata.command = ATA_WRITE48; 792 request->flags &= ~ATA_R_DMA; 793 } 794 else 795 request->u.ata.command = ATA_WRITE_DMA48; 796 break; 797 case ATA_WRITE_DMA_QUEUED: 798 if (ch->flags & ATA_NO_48BIT_DMA) { 799 if (request->transfersize > DEV_BSIZE) 800 request->u.ata.command = ATA_WRITE_MUL48; 801 else 802 request->u.ata.command = ATA_WRITE48; 803 request->u.ata.command = ATA_WRITE48; 804 request->flags &= ~ATA_R_DMA; 805 } 806 else 807 request->u.ata.command = ATA_WRITE_DMA_QUEUED48; 808 break; 809 case ATA_FLUSHCACHE: 810 request->u.ata.command = ATA_FLUSHCACHE48; 811 break; 812 case ATA_READ_NATIVE_MAX_ADDDRESS: 813 request->u.ata.command = ATA_READ_NATIVE_MAX_ADDDRESS48; 814 break; 815 case ATA_SET_MAX_ADDRESS: 816 request->u.ata.command = ATA_SET_MAX_ADDRESS48; 817 break; 818 default: 819 return; 820 } 821 atadev->flags |= ATA_D_48BIT_ACTIVE; 822 } 823 } 824 825 void 826 ata_udelay(int interval) 827 { 828 /* for now just use DELAY, the timer/sleep subsytems are not there yet */ 829 /* XXX use DRIVERSLEEP if possible */ 830 if (1 || interval < (1000000/hz)) 831 DELAY(interval); 832 else 833 tsleep(&interval, 0, "ataslp", interval/(1000000/hz)); 834 } 835 836 char * 837 ata_mode2str(int mode) 838 { 839 switch (mode) { 840 case -1: return "UNSUPPORTED"; 841 case ATA_PIO0: return "PIO0"; 842 case ATA_PIO1: return "PIO1"; 843 case ATA_PIO2: return "PIO2"; 844 case ATA_PIO3: return "PIO3"; 845 case ATA_PIO4: return "PIO4"; 846 case ATA_WDMA0: return "WDMA0"; 847 case ATA_WDMA1: return "WDMA1"; 848 case ATA_WDMA2: return "WDMA2"; 849 case ATA_UDMA0: return "UDMA16"; 850 case ATA_UDMA1: return "UDMA25"; 851 case ATA_UDMA2: return "UDMA33"; 852 case ATA_UDMA3: return "UDMA40"; 853 case ATA_UDMA4: return "UDMA66"; 854 case ATA_UDMA5: return "UDMA100"; 855 case ATA_UDMA6: return "UDMA133"; 856 case ATA_SA150: return "SATA150"; 857 case ATA_SA300: return "SATA300"; 858 case ATA_USB: return "USB"; 859 case ATA_USB1: return "USB1"; 860 case ATA_USB2: return "USB2"; 861 default: 862 if (mode & ATA_DMA_MASK) 863 return "BIOSDMA"; 864 else 865 return "BIOSPIO"; 866 } 867 } 868 869 int 870 ata_pmode(struct ata_params *ap) 871 { 872 if (ap->atavalid & ATA_FLAG_64_70) { 873 if (ap->apiomodes & 0x02) 874 return ATA_PIO4; 875 if (ap->apiomodes & 0x01) 876 return ATA_PIO3; 877 } 878 if (ap->mwdmamodes & 0x04) 879 return ATA_PIO4; 880 if (ap->mwdmamodes & 0x02) 881 return ATA_PIO3; 882 if (ap->mwdmamodes & 0x01) 883 return ATA_PIO2; 884 if ((ap->retired_piomode & ATA_RETIRED_PIO_MASK) == 0x200) 885 return ATA_PIO2; 886 if ((ap->retired_piomode & ATA_RETIRED_PIO_MASK) == 0x100) 887 return ATA_PIO1; 888 if ((ap->retired_piomode & ATA_RETIRED_PIO_MASK) == 0x000) 889 return ATA_PIO0; 890 return ATA_PIO0; 891 } 892 893 int 894 ata_wmode(struct ata_params *ap) 895 { 896 if (ap->mwdmamodes & 0x04) 897 return ATA_WDMA2; 898 if (ap->mwdmamodes & 0x02) 899 return ATA_WDMA1; 900 if (ap->mwdmamodes & 0x01) 901 return ATA_WDMA0; 902 return -1; 903 } 904 905 int 906 ata_umode(struct ata_params *ap) 907 { 908 if (ap->atavalid & ATA_FLAG_88) { 909 if (ap->udmamodes & 0x40) 910 return ATA_UDMA6; 911 if (ap->udmamodes & 0x20) 912 return ATA_UDMA5; 913 if (ap->udmamodes & 0x10) 914 return ATA_UDMA4; 915 if (ap->udmamodes & 0x08) 916 return ATA_UDMA3; 917 if (ap->udmamodes & 0x04) 918 return ATA_UDMA2; 919 if (ap->udmamodes & 0x02) 920 return ATA_UDMA1; 921 if (ap->udmamodes & 0x01) 922 return ATA_UDMA0; 923 } 924 return -1; 925 } 926 927 int 928 ata_limit_mode(device_t dev, int mode, int maxmode) 929 { 930 struct ata_device *atadev = device_get_softc(dev); 931 932 if (maxmode && mode > maxmode) 933 mode = maxmode; 934 935 if (mode >= ATA_UDMA0 && ata_umode(&atadev->param) > 0) 936 return min(mode, ata_umode(&atadev->param)); 937 938 if (mode >= ATA_WDMA0 && ata_wmode(&atadev->param) > 0) 939 return min(mode, ata_wmode(&atadev->param)); 940 941 if (mode > ata_pmode(&atadev->param)) 942 return min(mode, ata_pmode(&atadev->param)); 943 944 return mode; 945 } 946 947 static void 948 bswap(int8_t *buf, int len) 949 { 950 u_int16_t *ptr = (u_int16_t*)(buf + len); 951 952 while (--ptr >= (u_int16_t*)buf) 953 *ptr = ntohs(*ptr); 954 } 955 956 static void 957 btrim(int8_t *buf, int len) 958 { 959 int8_t *ptr; 960 961 for (ptr = buf; ptr < buf+len; ++ptr) 962 if (!*ptr || *ptr == '_') 963 *ptr = ' '; 964 for (ptr = buf + len - 1; ptr >= buf && *ptr == ' '; --ptr) 965 *ptr = 0; 966 } 967 968 static void 969 bpack(int8_t *src, int8_t *dst, int len) 970 { 971 int i, j, blank; 972 973 for (i = j = blank = 0 ; i < len; i++) { 974 if (blank && src[i] == ' ') continue; 975 if (blank && src[i] != ' ') { 976 dst[j++] = src[i]; 977 blank = 0; 978 continue; 979 } 980 if (src[i] == ' ') { 981 blank = 1; 982 if (i == 0) 983 continue; 984 } 985 dst[j++] = src[i]; 986 } 987 if (j < len) 988 dst[j] = 0x00; 989 } 990 991 992 /* 993 * module handeling 994 */ 995 static int 996 ata_module_event_handler(module_t mod, int what, void *arg) 997 { 998 /* static because we need the reference at destruction time */ 999 static cdev_t atacdev; 1000 1001 switch (what) { 1002 case MOD_LOAD: 1003 /* register controlling device */ 1004 dev_ops_add(&ata_ops, 0, 0); 1005 atacdev = make_dev(&ata_ops, 0, UID_ROOT, GID_OPERATOR, 0600, "ata"); 1006 reference_dev(atacdev); 1007 return 0; 1008 1009 case MOD_UNLOAD: 1010 /* deregister controlling device */ 1011 destroy_dev(atacdev); 1012 dev_ops_remove(&ata_ops, 0, 0); 1013 return 0; 1014 1015 default: 1016 return EOPNOTSUPP; 1017 } 1018 } 1019 1020 static moduledata_t ata_moduledata = { "ata", ata_module_event_handler, NULL }; 1021 DECLARE_MODULE(ata, ata_moduledata, SI_SUB_CONFIGURE, SI_ORDER_SECOND); 1022 MODULE_VERSION(ata, 1); 1023 1024 /* 1025 * Construct a completely zero'ed ata_request. On objcache_put(), an 1026 * ata_request object is also zero'ed, so objcache_get() is guaranteed to give 1027 * completely zero'ed objects without spending too much time. 1028 */ 1029 static boolean_t 1030 ata_request_cache_ctor(void *obj, void *private, int ocflags) 1031 { 1032 struct ata_request *arp = obj; 1033 1034 bzero(arp, sizeof(struct ata_request)); 1035 return(TRUE); 1036 } 1037 1038 /* 1039 * Construct a completely zero'ed ata_composite. On objcache_put(), an 1040 * ata_composite object is also zero'ed, so objcache_get() is guaranteed to give 1041 * completely zero'ed objects without spending too much time. 1042 */ 1043 static boolean_t 1044 ata_composite_cache_ctor(void *obj, void *private, int ocflags) 1045 { 1046 struct ata_composite *acp = obj; 1047 1048 bzero(acp, sizeof(struct ata_composite)); 1049 return(TRUE); 1050 } 1051 1052 static void 1053 ata_init(void) 1054 { 1055 ata_request_cache = objcache_create("ata_request", 0, 0, 1056 ata_request_cache_ctor, NULL, NULL, 1057 objcache_malloc_alloc, 1058 objcache_malloc_free, 1059 &ata_request_malloc_args); 1060 ata_composite_cache = objcache_create("ata_composite", 0, 0, 1061 ata_composite_cache_ctor, NULL, NULL, 1062 objcache_malloc_alloc, 1063 objcache_malloc_free, 1064 &ata_composite_malloc_args); 1065 } 1066 SYSINIT(ata_register, SI_SUB_DRIVERS, SI_ORDER_SECOND, ata_init, NULL); 1067 1068 static void 1069 ata_uninit(void) 1070 { 1071 objcache_destroy(ata_composite_cache); 1072 objcache_destroy(ata_request_cache); 1073 } 1074 SYSUNINIT(ata_unregister, SI_SUB_DRIVERS, SI_ORDER_SECOND, ata_uninit, NULL); 1075