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-pci.c,v 1.121 2007/02/23 12:18:33 piso Exp $ 27 * $DragonFly: src/sys/dev/disk/nata/ata-pci.c,v 1.6 2007/10/19 11:53:14 tgen Exp $ 28 */ 29 30 #include "opt_ata.h" 31 32 #include <sys/param.h> 33 #include <sys/bus.h> 34 #include <sys/bus_resource.h> 35 #include <sys/malloc.h> 36 #include <sys/module.h> 37 #include <sys/nata.h> 38 #include <sys/rman.h> 39 #include <sys/systm.h> 40 41 #include <bus/pci/pcireg.h> 42 #include <bus/pci/pcivar.h> 43 44 #include "ata-all.h" 45 #include "ata-pci.h" 46 #include "ata_if.h" 47 48 /* local vars */ 49 static MALLOC_DEFINE(M_ATAPCI, "ata_pci", "ATA driver PCI"); 50 51 /* misc defines */ 52 #define IOMASK 0xfffffffc 53 #define ATA_PROBE_OK -10 54 55 int 56 ata_legacy(device_t dev) 57 { 58 return (((pci_read_config(dev, PCIR_PROGIF, 1)&PCIP_STORAGE_IDE_MASTERDEV)&& 59 ((pci_read_config(dev, PCIR_PROGIF, 1) & 60 (PCIP_STORAGE_IDE_MODEPRIM | PCIP_STORAGE_IDE_MODESEC)) != 61 (PCIP_STORAGE_IDE_MODEPRIM | PCIP_STORAGE_IDE_MODESEC))) || 62 (!pci_read_config(dev, PCIR_BAR(0), 4) && 63 !pci_read_config(dev, PCIR_BAR(1), 4) && 64 !pci_read_config(dev, PCIR_BAR(2), 4) && 65 !pci_read_config(dev, PCIR_BAR(3), 4))); 66 67 } 68 69 int 70 ata_pci_probe(device_t dev) 71 { 72 if (pci_get_class(dev) != PCIC_STORAGE) 73 return ENXIO; 74 75 switch (pci_get_vendor(dev)) { 76 case ATA_ACARD_ID: 77 if (!ata_acard_ident(dev)) 78 return ATA_PROBE_OK; 79 break; 80 case ATA_ACER_LABS_ID: 81 if (!ata_ali_ident(dev)) 82 return ATA_PROBE_OK; 83 break; 84 case ATA_AMD_ID: 85 if (!ata_amd_ident(dev)) 86 return ATA_PROBE_OK; 87 break; 88 case ATA_ATI_ID: 89 if (!ata_ati_ident(dev)) 90 return ATA_PROBE_OK; 91 break; 92 case ATA_CYRIX_ID: 93 if (!ata_cyrix_ident(dev)) 94 return ATA_PROBE_OK; 95 break; 96 case ATA_CYPRESS_ID: 97 if (!ata_cypress_ident(dev)) 98 return ATA_PROBE_OK; 99 break; 100 case ATA_HIGHPOINT_ID: 101 if (!ata_highpoint_ident(dev)) 102 return ATA_PROBE_OK; 103 break; 104 case ATA_INTEL_ID: 105 if (!ata_intel_ident(dev)) 106 return ATA_PROBE_OK; 107 break; 108 case ATA_ITE_ID: 109 if (!ata_ite_ident(dev)) 110 return ATA_PROBE_OK; 111 break; 112 case ATA_JMICRON_ID: 113 if (!ata_jmicron_ident(dev)) 114 return ATA_PROBE_OK; 115 break; 116 case ATA_MARVELL_ID: 117 if (!ata_marvell_ident(dev)) 118 return ATA_PROBE_OK; 119 break; 120 case ATA_NATIONAL_ID: 121 if (!ata_national_ident(dev)) 122 return ATA_PROBE_OK; 123 break; 124 case ATA_NETCELL_ID: 125 if (!ata_netcell_ident(dev)) 126 return ATA_PROBE_OK; 127 break; 128 case ATA_NVIDIA_ID: 129 if (!ata_nvidia_ident(dev)) 130 return ATA_PROBE_OK; 131 break; 132 case ATA_PROMISE_ID: 133 if (!ata_promise_ident(dev)) 134 return ATA_PROBE_OK; 135 break; 136 case ATA_SERVERWORKS_ID: 137 if (!ata_serverworks_ident(dev)) 138 return ATA_PROBE_OK; 139 break; 140 case ATA_SILICON_IMAGE_ID: 141 if (!ata_sii_ident(dev)) 142 return ATA_PROBE_OK; 143 break; 144 case ATA_SIS_ID: 145 if (!ata_sis_ident(dev)) 146 return ATA_PROBE_OK; 147 break; 148 case ATA_VIA_ID: 149 if (!ata_via_ident(dev)) 150 return ATA_PROBE_OK; 151 break; 152 case ATA_CENATEK_ID: 153 if (pci_get_devid(dev) == ATA_CENATEK_ROCKET) { 154 ata_generic_ident(dev); 155 device_set_desc(dev, "Cenatek Rocket Drive controller"); 156 return ATA_PROBE_OK; 157 } 158 break; 159 case ATA_MICRON_ID: 160 if (pci_get_devid(dev) == ATA_MICRON_RZ1000 || 161 pci_get_devid(dev) == ATA_MICRON_RZ1001) { 162 ata_generic_ident(dev); 163 device_set_desc(dev, 164 "RZ 100? ATA controller !WARNING! data loss/corruption risk"); 165 return ATA_PROBE_OK; 166 } 167 break; 168 } 169 170 /* unknown chipset, try generic AHCI or DMA if it seems possible */ 171 if (pci_get_class(dev) == PCIC_STORAGE) { 172 if (pci_get_subclass(dev) == PCIS_STORAGE_SATA) { 173 if (!ata_genahci_ident(dev)) 174 return ATA_PROBE_OK; 175 } else if (pci_get_subclass(dev) == PCIS_STORAGE_IDE) { 176 if (!ata_generic_ident(dev)) 177 return ATA_PROBE_OK; 178 } 179 } 180 return ENXIO; 181 } 182 183 int 184 ata_pci_attach(device_t dev) 185 { 186 struct ata_pci_controller *ctlr = device_get_softc(dev); 187 u_int32_t cmd; 188 int unit; 189 190 /* do chipset specific setups only needed once */ 191 if (ata_legacy(dev) || pci_read_config(dev, PCIR_BAR(2), 4) & IOMASK) 192 ctlr->channels = 2; 193 else 194 ctlr->channels = 1; 195 ctlr->allocate = ata_pci_allocate; 196 ctlr->dmainit = ata_pci_dmainit; 197 ctlr->dev = dev; 198 199 /* if needed try to enable busmastering */ 200 cmd = pci_read_config(dev, PCIR_COMMAND, 2); 201 if (!(cmd & PCIM_CMD_BUSMASTEREN)) { 202 pci_write_config(dev, PCIR_COMMAND, cmd | PCIM_CMD_BUSMASTEREN, 2); 203 cmd = pci_read_config(dev, PCIR_COMMAND, 2); 204 } 205 206 /* if busmastering mode "stuck" use it */ 207 if ((cmd & PCIM_CMD_BUSMASTEREN) == PCIM_CMD_BUSMASTEREN) { 208 ctlr->r_type1 = SYS_RES_IOPORT; 209 ctlr->r_rid1 = ATA_BMADDR_RID; 210 ctlr->r_res1 = bus_alloc_resource_any(dev, ctlr->r_type1, &ctlr->r_rid1, 211 RF_ACTIVE); 212 } 213 214 if (ctlr->chipinit(dev)) 215 return ENXIO; 216 217 /* attach all channels on this controller */ 218 for (unit = 0; unit < ctlr->channels; unit++) { 219 int freeunit = 2; 220 if ((unit == 0 || unit == 1) && ata_legacy(dev)) { 221 device_add_child(dev, "ata", unit); 222 continue; 223 } 224 /* XXX TGEN devclass_find_free_unit() implementation */ 225 while (freeunit < devclass_get_maxunit(ata_devclass) && 226 devclass_get_device(ata_devclass, freeunit) != NULL) 227 freeunit++; 228 device_add_child(dev, "ata", freeunit); 229 } 230 bus_generic_attach(dev); 231 return 0; 232 } 233 234 int 235 ata_pci_detach(device_t dev) 236 { 237 struct ata_pci_controller *ctlr = device_get_softc(dev); 238 device_t *children; 239 int nchildren, i; 240 241 /* detach & delete all children */ 242 if (!device_get_children(dev, &children, &nchildren)) { 243 for (i = 0; i < nchildren; i++) 244 device_delete_child(dev, children[i]); 245 kfree(children, M_TEMP); 246 } 247 248 if (ctlr->r_irq) { 249 bus_teardown_intr(dev, ctlr->r_irq, ctlr->handle); 250 bus_release_resource(dev, SYS_RES_IRQ, ATA_IRQ_RID, ctlr->r_irq); 251 } 252 if (ctlr->r_res2) 253 bus_release_resource(dev, ctlr->r_type2, ctlr->r_rid2, ctlr->r_res2); 254 if (ctlr->r_res1) 255 bus_release_resource(dev, ctlr->r_type1, ctlr->r_rid1, ctlr->r_res1); 256 257 return 0; 258 } 259 260 struct resource * 261 ata_pci_alloc_resource(device_t dev, device_t child, int type, int *rid, 262 u_long start, u_long end, u_long count, u_int flags) 263 { 264 struct ata_pci_controller *controller = device_get_softc(dev); 265 int unit = ((struct ata_channel *)device_get_softc(child))->unit; 266 struct resource *res = NULL; 267 int myrid; 268 269 if (type == SYS_RES_IOPORT) { 270 switch (*rid) { 271 case ATA_IOADDR_RID: 272 if (ata_legacy(dev)) { 273 start = (unit ? ATA_SECONDARY : ATA_PRIMARY); 274 count = ATA_IOSIZE; 275 end = start + count - 1; 276 } 277 myrid = PCIR_BAR(0) + (unit << 3); 278 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, 279 SYS_RES_IOPORT, &myrid, 280 start, end, count, flags); 281 break; 282 283 case ATA_CTLADDR_RID: 284 if (ata_legacy(dev)) { 285 start = (unit ? ATA_SECONDARY : ATA_PRIMARY) + ATA_CTLOFFSET; 286 count = ATA_CTLIOSIZE; 287 end = start + count - 1; 288 } 289 myrid = PCIR_BAR(1) + (unit << 3); 290 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, 291 SYS_RES_IOPORT, &myrid, 292 start, end, count, flags); 293 break; 294 } 295 } 296 if (type == SYS_RES_IRQ && *rid == ATA_IRQ_RID) { 297 if (ata_legacy(dev)) { 298 int irq = (unit == 0 ? 14 : 15); 299 300 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), child, 301 SYS_RES_IRQ, rid, irq, irq, 1, flags); 302 } 303 else 304 res = controller->r_irq; 305 } 306 return res; 307 } 308 309 int 310 ata_pci_release_resource(device_t dev, device_t child, int type, int rid, 311 struct resource *r) 312 { 313 int unit = ((struct ata_channel *)device_get_softc(child))->unit; 314 315 if (type == SYS_RES_IOPORT) { 316 switch (rid) { 317 case ATA_IOADDR_RID: 318 return BUS_RELEASE_RESOURCE(device_get_parent(dev), dev, 319 SYS_RES_IOPORT, 320 PCIR_BAR(0) + (unit << 3), r); 321 break; 322 323 case ATA_CTLADDR_RID: 324 return BUS_RELEASE_RESOURCE(device_get_parent(dev), dev, 325 SYS_RES_IOPORT, 326 PCIR_BAR(1) + (unit << 3), r); 327 break; 328 default: 329 return ENOENT; 330 } 331 } 332 if (type == SYS_RES_IRQ) { 333 if (rid != ATA_IRQ_RID) 334 return ENOENT; 335 336 if (ata_legacy(dev)) { 337 return BUS_RELEASE_RESOURCE(device_get_parent(dev), child, 338 SYS_RES_IRQ, rid, r); 339 } 340 else 341 return 0; 342 } 343 return EINVAL; 344 } 345 346 int 347 ata_pci_setup_intr(device_t dev, device_t child, struct resource *irq, 348 int flags, driver_intr_t *function, void *argument, 349 void **cookiep) 350 { 351 if (ata_legacy(dev)) { 352 return BUS_SETUP_INTR(device_get_parent(dev), child, irq, 353 flags, function, argument, cookiep, NULL); 354 } 355 else { 356 struct ata_pci_controller *controller = device_get_softc(dev); 357 int unit = ((struct ata_channel *)device_get_softc(child))->unit; 358 359 controller->interrupt[unit].function = function; 360 controller->interrupt[unit].argument = argument; 361 *cookiep = controller; 362 return 0; 363 } 364 } 365 366 int 367 ata_pci_teardown_intr(device_t dev, device_t child, struct resource *irq, 368 void *cookie) 369 { 370 if (ata_legacy(dev)) { 371 return BUS_TEARDOWN_INTR(device_get_parent(dev), child, irq, cookie); 372 } 373 else { 374 struct ata_pci_controller *controller = device_get_softc(dev); 375 int unit = ((struct ata_channel *)device_get_softc(child))->unit; 376 377 controller->interrupt[unit].function = NULL; 378 controller->interrupt[unit].argument = NULL; 379 return 0; 380 } 381 } 382 383 int 384 ata_pci_allocate(device_t dev) 385 { 386 struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev)); 387 struct ata_channel *ch = device_get_softc(dev); 388 struct resource *io = NULL, *ctlio = NULL; 389 int i, rid; 390 391 rid = ATA_IOADDR_RID; 392 if (!(io = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE))) 393 return ENXIO; 394 395 rid = ATA_CTLADDR_RID; 396 if (!(ctlio = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,RF_ACTIVE))){ 397 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, io); 398 return ENXIO; 399 } 400 401 for (i = ATA_DATA; i <= ATA_COMMAND; i ++) { 402 ch->r_io[i].res = io; 403 ch->r_io[i].offset = i; 404 } 405 ch->r_io[ATA_CONTROL].res = ctlio; 406 ch->r_io[ATA_CONTROL].offset = ata_legacy(device_get_parent(dev)) ? 0 : 2; 407 ch->r_io[ATA_IDX_ADDR].res = io; 408 ata_default_registers(dev); 409 if (ctlr->r_res1) { 410 for (i = ATA_BMCMD_PORT; i <= ATA_BMDTP_PORT; i++) { 411 ch->r_io[i].res = ctlr->r_res1; 412 ch->r_io[i].offset = (i - ATA_BMCMD_PORT) + (ch->unit*ATA_BMIOSIZE); 413 } 414 } 415 416 ata_pci_hw(dev); 417 return 0; 418 } 419 420 void 421 ata_pci_hw(device_t dev) 422 { 423 struct ata_channel *ch = device_get_softc(dev); 424 425 ata_generic_hw(dev); 426 ch->hw.status = ata_pci_status; 427 } 428 429 int 430 ata_pci_status(device_t dev) 431 { 432 struct ata_channel *ch = device_get_softc(dev); 433 434 if ((dumping || !ata_legacy(device_get_parent(dev))) && 435 ch->dma && ((ch->flags & ATA_ALWAYS_DMASTAT) || 436 (ch->dma->flags & ATA_DMA_ACTIVE))) { 437 int bmstat = ATA_IDX_INB(ch, ATA_BMSTAT_PORT) & ATA_BMSTAT_MASK; 438 439 if ((bmstat & (ATA_BMSTAT_ACTIVE | ATA_BMSTAT_INTERRUPT)) != 440 ATA_BMSTAT_INTERRUPT) 441 return 0; 442 ATA_IDX_OUTB(ch, ATA_BMSTAT_PORT, bmstat & ~ATA_BMSTAT_ERROR); 443 DELAY(1); 444 } 445 if (ATA_IDX_INB(ch, ATA_ALTSTAT) & ATA_S_BUSY) { 446 DELAY(100); 447 if (ATA_IDX_INB(ch, ATA_ALTSTAT) & ATA_S_BUSY) 448 return 0; 449 } 450 return 1; 451 } 452 453 static int 454 ata_pci_dmastart(device_t dev) 455 { 456 struct ata_channel *ch = device_get_softc(device_get_parent(dev)); 457 u_int8_t val; 458 459 ATA_IDX_OUTB(ch, ATA_BMSTAT_PORT, (ATA_IDX_INB(ch, ATA_BMSTAT_PORT) | 460 (ATA_BMSTAT_INTERRUPT | ATA_BMSTAT_ERROR))); 461 ATA_IDX_OUTL(ch, ATA_BMDTP_PORT, ch->dma->sg_bus); 462 ch->dma->flags |= ATA_DMA_ACTIVE; 463 val = ATA_IDX_INB(ch, ATA_BMCMD_PORT); 464 if (ch->dma->flags & ATA_DMA_READ) 465 val |= ATA_BMCMD_WRITE_READ; 466 else 467 val &= ~ATA_BMCMD_WRITE_READ; 468 ATA_IDX_OUTB(ch, ATA_BMCMD_PORT, val); 469 470 /* 471 * Issue the start command separately from configuration setup, 472 * in case the hardware latches portions of the configuration. 473 */ 474 ATA_IDX_OUTB(ch, ATA_BMCMD_PORT, val | ATA_BMCMD_START_STOP); 475 476 return 0; 477 } 478 479 static int 480 ata_pci_dmastop(device_t dev) 481 { 482 struct ata_channel *ch = device_get_softc(device_get_parent(dev)); 483 int error; 484 485 ATA_IDX_OUTB(ch, ATA_BMCMD_PORT, 486 ATA_IDX_INB(ch, ATA_BMCMD_PORT) & ~ATA_BMCMD_START_STOP); 487 ch->dma->flags &= ~ATA_DMA_ACTIVE; 488 error = ATA_IDX_INB(ch, ATA_BMSTAT_PORT) & ATA_BMSTAT_MASK; 489 ATA_IDX_OUTB(ch, ATA_BMSTAT_PORT, ATA_BMSTAT_INTERRUPT | ATA_BMSTAT_ERROR); 490 return error; 491 } 492 493 static void 494 ata_pci_dmareset(device_t dev) 495 { 496 struct ata_channel *ch = device_get_softc(dev); 497 498 ATA_IDX_OUTB(ch, ATA_BMCMD_PORT, 499 ATA_IDX_INB(ch, ATA_BMCMD_PORT) & ~ATA_BMCMD_START_STOP); 500 ch->dma->flags &= ~ATA_DMA_ACTIVE; 501 ATA_IDX_OUTB(ch, ATA_BMSTAT_PORT, ATA_BMSTAT_INTERRUPT | ATA_BMSTAT_ERROR); 502 ch->dma->unload(dev); 503 } 504 505 void 506 ata_pci_dmainit(device_t dev) 507 { 508 struct ata_channel *ch = device_get_softc(dev); 509 510 ata_dmainit(dev); 511 if (ch->dma) { 512 ch->dma->start = ata_pci_dmastart; 513 ch->dma->stop = ata_pci_dmastop; 514 ch->dma->reset = ata_pci_dmareset; 515 } 516 } 517 518 static device_method_t ata_pci_methods[] = { 519 /* device interface */ 520 DEVMETHOD(device_probe, ata_pci_probe), 521 DEVMETHOD(device_attach, ata_pci_attach), 522 DEVMETHOD(device_detach, ata_pci_detach), 523 DEVMETHOD(device_shutdown, bus_generic_shutdown), 524 DEVMETHOD(device_suspend, bus_generic_suspend), 525 DEVMETHOD(device_resume, bus_generic_resume), 526 527 /* bus methods */ 528 DEVMETHOD(bus_alloc_resource, ata_pci_alloc_resource), 529 DEVMETHOD(bus_release_resource, ata_pci_release_resource), 530 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 531 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 532 DEVMETHOD(bus_setup_intr, ata_pci_setup_intr), 533 DEVMETHOD(bus_teardown_intr, ata_pci_teardown_intr), 534 535 { 0, 0 } 536 }; 537 538 devclass_t atapci_devclass; 539 540 static driver_t ata_pci_driver = { 541 "atapci", 542 ata_pci_methods, 543 sizeof(struct ata_pci_controller), 544 }; 545 546 DRIVER_MODULE(atapci, pci, ata_pci_driver, atapci_devclass, 0, 0); 547 MODULE_VERSION(atapci, 1); 548 MODULE_DEPEND(atapci, ata, 1, 1, 1); 549 550 static int 551 ata_pcichannel_probe(device_t dev) 552 { 553 struct ata_channel *ch = device_get_softc(dev); 554 device_t *children; 555 int count, i; 556 char buffer[32]; 557 558 /* take care of green memory */ 559 bzero(ch, sizeof(struct ata_channel)); 560 561 /* find channel number on this controller */ 562 device_get_children(device_get_parent(dev), &children, &count); 563 for (i = 0; i < count; i++) { 564 if (children[i] == dev) 565 ch->unit = i; 566 } 567 kfree(children, M_TEMP); 568 569 ksprintf(buffer, "ATA channel %d", ch->unit); 570 device_set_desc_copy(dev, buffer); 571 572 return ata_probe(dev); 573 } 574 575 static int 576 ata_pcichannel_attach(device_t dev) 577 { 578 struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev)); 579 struct ata_channel *ch = device_get_softc(dev); 580 int error; 581 582 if (ctlr->dmainit) 583 ctlr->dmainit(dev); 584 if (ch->dma) 585 ch->dma->alloc(dev); 586 587 if ((error = ctlr->allocate(dev))) { 588 if (ch->dma) 589 ch->dma->free(dev); 590 return error; 591 } 592 593 return ata_attach(dev); 594 } 595 596 static int 597 ata_pcichannel_detach(device_t dev) 598 { 599 struct ata_channel *ch = device_get_softc(dev); 600 int error; 601 602 if ((error = ata_detach(dev))) 603 return error; 604 605 if (ch->dma) 606 ch->dma->free(dev); 607 608 /* XXX SOS free resources for io and ctlio ?? */ 609 610 return 0; 611 } 612 613 static int 614 ata_pcichannel_locking(device_t dev, int mode) 615 { 616 struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev)); 617 struct ata_channel *ch = device_get_softc(dev); 618 619 if (ctlr->locking) 620 return ctlr->locking(dev, mode); 621 else 622 return ch->unit; 623 } 624 625 static void 626 ata_pcichannel_reset(device_t dev) 627 { 628 struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev)); 629 struct ata_channel *ch = device_get_softc(dev); 630 631 /* if DMA engine present reset it */ 632 if (ch->dma) { 633 if (ch->dma->reset) 634 ch->dma->reset(dev); 635 ch->dma->unload(dev); 636 } 637 638 /* reset the controller HW */ 639 if (ctlr->reset) 640 ctlr->reset(dev); 641 else 642 ata_generic_reset(dev); 643 } 644 645 static void 646 ata_pcichannel_setmode(device_t parent, device_t dev) 647 { 648 struct ata_pci_controller *ctlr = device_get_softc(GRANDPARENT(dev)); 649 struct ata_device *atadev = device_get_softc(dev); 650 int mode = atadev->mode; 651 652 ctlr->setmode(dev, ATA_PIO_MAX); 653 if (mode >= ATA_DMA) 654 ctlr->setmode(dev, mode); 655 } 656 657 static device_method_t ata_pcichannel_methods[] = { 658 /* device interface */ 659 DEVMETHOD(device_probe, ata_pcichannel_probe), 660 DEVMETHOD(device_attach, ata_pcichannel_attach), 661 DEVMETHOD(device_detach, ata_pcichannel_detach), 662 DEVMETHOD(device_shutdown, bus_generic_shutdown), 663 DEVMETHOD(device_suspend, ata_suspend), 664 DEVMETHOD(device_resume, ata_resume), 665 666 /* ATA methods */ 667 DEVMETHOD(ata_setmode, ata_pcichannel_setmode), 668 DEVMETHOD(ata_locking, ata_pcichannel_locking), 669 DEVMETHOD(ata_reset, ata_pcichannel_reset), 670 671 { 0, 0 } 672 }; 673 674 driver_t ata_pcichannel_driver = { 675 "ata", 676 ata_pcichannel_methods, 677 sizeof(struct ata_channel), 678 }; 679 680 DRIVER_MODULE(ata, atapci, ata_pcichannel_driver, ata_devclass, 0, 0); 681