1 /*- 2 * Copyright (c) 2000 Michael Smith 3 * Copyright (c) 2000 BSDi 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 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 AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include "opt_acpi.h" 32 #include "opt_pci.h" 33 34 #include <sys/param.h> 35 #include <sys/bus.h> 36 #include <sys/kernel.h> 37 #include <sys/limits.h> 38 #include <sys/malloc.h> 39 #include <sys/module.h> 40 #include <sys/rman.h> 41 #include <sys/sysctl.h> 42 43 #include <contrib/dev/acpica/include/acpi.h> 44 #include <contrib/dev/acpica/include/accommon.h> 45 46 #include <dev/acpica/acpivar.h> 47 48 #include <machine/pci_cfgreg.h> 49 #include <dev/pci/pcireg.h> 50 #include <dev/pci/pcivar.h> 51 #include <dev/pci/pcib_private.h> 52 #include "pcib_if.h" 53 54 #include <dev/acpica/acpi_pcibvar.h> 55 56 /* Hooks for the ACPI CA debugging infrastructure. */ 57 #define _COMPONENT ACPI_BUS 58 ACPI_MODULE_NAME("PCI_ACPI") 59 60 struct acpi_hpcib_softc { 61 device_t ap_dev; 62 ACPI_HANDLE ap_handle; 63 bus_dma_tag_t ap_dma_tag; 64 int ap_flags; 65 uint32_t ap_osc_ctl; 66 67 int ap_segment; /* PCI domain */ 68 int ap_bus; /* bios-assigned bus number */ 69 int ap_addr; /* device/func of PCI-Host bridge */ 70 71 ACPI_BUFFER ap_prt; /* interrupt routing table */ 72 #ifdef NEW_PCIB 73 struct pcib_host_resources ap_host_res; 74 #endif 75 }; 76 77 static int acpi_pcib_acpi_probe(device_t bus); 78 static int acpi_pcib_acpi_attach(device_t bus); 79 static int acpi_pcib_read_ivar(device_t dev, device_t child, 80 int which, uintptr_t *result); 81 static int acpi_pcib_write_ivar(device_t dev, device_t child, 82 int which, uintptr_t value); 83 static uint32_t acpi_pcib_read_config(device_t dev, u_int bus, 84 u_int slot, u_int func, u_int reg, int bytes); 85 static void acpi_pcib_write_config(device_t dev, u_int bus, 86 u_int slot, u_int func, u_int reg, uint32_t data, 87 int bytes); 88 static int acpi_pcib_acpi_route_interrupt(device_t pcib, 89 device_t dev, int pin); 90 static int acpi_pcib_alloc_msi(device_t pcib, device_t dev, 91 int count, int maxcount, int *irqs); 92 static int acpi_pcib_map_msi(device_t pcib, device_t dev, 93 int irq, uint64_t *addr, uint32_t *data); 94 static int acpi_pcib_alloc_msix(device_t pcib, device_t dev, 95 int *irq); 96 static struct resource *acpi_pcib_acpi_alloc_resource(device_t dev, 97 device_t child, int type, int *rid, 98 rman_res_t start, rman_res_t end, rman_res_t count, 99 u_int flags); 100 #ifdef NEW_PCIB 101 static int acpi_pcib_acpi_adjust_resource(device_t dev, 102 device_t child, int type, struct resource *r, 103 rman_res_t start, rman_res_t end); 104 #ifdef PCI_RES_BUS 105 static int acpi_pcib_acpi_release_resource(device_t dev, 106 device_t child, int type, int rid, 107 struct resource *r); 108 #endif 109 #endif 110 static int acpi_pcib_request_feature(device_t pcib, device_t dev, 111 enum pci_feature feature); 112 static bus_dma_tag_t acpi_pcib_get_dma_tag(device_t bus, device_t child); 113 114 static device_method_t acpi_pcib_acpi_methods[] = { 115 /* Device interface */ 116 DEVMETHOD(device_probe, acpi_pcib_acpi_probe), 117 DEVMETHOD(device_attach, acpi_pcib_acpi_attach), 118 DEVMETHOD(device_shutdown, bus_generic_shutdown), 119 DEVMETHOD(device_suspend, bus_generic_suspend), 120 DEVMETHOD(device_resume, bus_generic_resume), 121 122 /* Bus interface */ 123 DEVMETHOD(bus_read_ivar, acpi_pcib_read_ivar), 124 DEVMETHOD(bus_write_ivar, acpi_pcib_write_ivar), 125 DEVMETHOD(bus_alloc_resource, acpi_pcib_acpi_alloc_resource), 126 #ifdef NEW_PCIB 127 DEVMETHOD(bus_adjust_resource, acpi_pcib_acpi_adjust_resource), 128 #else 129 DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource), 130 #endif 131 #if defined(NEW_PCIB) && defined(PCI_RES_BUS) 132 DEVMETHOD(bus_release_resource, acpi_pcib_acpi_release_resource), 133 #else 134 DEVMETHOD(bus_release_resource, bus_generic_release_resource), 135 #endif 136 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 137 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 138 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 139 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 140 DEVMETHOD(bus_get_cpus, acpi_pcib_get_cpus), 141 DEVMETHOD(bus_get_dma_tag, acpi_pcib_get_dma_tag), 142 143 /* pcib interface */ 144 DEVMETHOD(pcib_maxslots, pcib_maxslots), 145 DEVMETHOD(pcib_read_config, acpi_pcib_read_config), 146 DEVMETHOD(pcib_write_config, acpi_pcib_write_config), 147 DEVMETHOD(pcib_route_interrupt, acpi_pcib_acpi_route_interrupt), 148 DEVMETHOD(pcib_alloc_msi, acpi_pcib_alloc_msi), 149 DEVMETHOD(pcib_release_msi, pcib_release_msi), 150 DEVMETHOD(pcib_alloc_msix, acpi_pcib_alloc_msix), 151 DEVMETHOD(pcib_release_msix, pcib_release_msix), 152 DEVMETHOD(pcib_map_msi, acpi_pcib_map_msi), 153 DEVMETHOD(pcib_power_for_sleep, acpi_pcib_power_for_sleep), 154 DEVMETHOD(pcib_request_feature, acpi_pcib_request_feature), 155 156 DEVMETHOD_END 157 }; 158 159 static devclass_t pcib_devclass; 160 161 DEFINE_CLASS_0(pcib, acpi_pcib_acpi_driver, acpi_pcib_acpi_methods, 162 sizeof(struct acpi_hpcib_softc)); 163 DRIVER_MODULE(acpi_pcib, acpi, acpi_pcib_acpi_driver, pcib_devclass, 0, 0); 164 MODULE_DEPEND(acpi_pcib, acpi, 1, 1, 1); 165 166 static int 167 acpi_pcib_acpi_probe(device_t dev) 168 { 169 ACPI_DEVICE_INFO *devinfo; 170 ACPI_HANDLE h; 171 int root; 172 173 if (acpi_disabled("pcib") || (h = acpi_get_handle(dev)) == NULL || 174 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 175 return (ENXIO); 176 root = (devinfo->Flags & ACPI_PCI_ROOT_BRIDGE) != 0; 177 AcpiOsFree(devinfo); 178 if (!root || pci_cfgregopen() == 0) 179 return (ENXIO); 180 181 device_set_desc(dev, "ACPI Host-PCI bridge"); 182 return (0); 183 } 184 185 #ifdef NEW_PCIB 186 static ACPI_STATUS 187 acpi_pcib_producer_handler(ACPI_RESOURCE *res, void *context) 188 { 189 struct acpi_hpcib_softc *sc; 190 UINT64 length, min, max; 191 u_int flags; 192 int error, type; 193 194 sc = context; 195 switch (res->Type) { 196 case ACPI_RESOURCE_TYPE_START_DEPENDENT: 197 case ACPI_RESOURCE_TYPE_END_DEPENDENT: 198 panic("host bridge has depenedent resources"); 199 case ACPI_RESOURCE_TYPE_ADDRESS16: 200 case ACPI_RESOURCE_TYPE_ADDRESS32: 201 case ACPI_RESOURCE_TYPE_ADDRESS64: 202 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64: 203 if (res->Data.Address.ProducerConsumer != ACPI_PRODUCER) 204 break; 205 switch (res->Type) { 206 case ACPI_RESOURCE_TYPE_ADDRESS16: 207 min = res->Data.Address16.Address.Minimum; 208 max = res->Data.Address16.Address.Maximum; 209 length = res->Data.Address16.Address.AddressLength; 210 break; 211 case ACPI_RESOURCE_TYPE_ADDRESS32: 212 min = res->Data.Address32.Address.Minimum; 213 max = res->Data.Address32.Address.Maximum; 214 length = res->Data.Address32.Address.AddressLength; 215 break; 216 case ACPI_RESOURCE_TYPE_ADDRESS64: 217 min = res->Data.Address64.Address.Minimum; 218 max = res->Data.Address64.Address.Maximum; 219 length = res->Data.Address64.Address.AddressLength; 220 break; 221 default: 222 KASSERT(res->Type == 223 ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64, 224 ("should never happen")); 225 min = res->Data.ExtAddress64.Address.Minimum; 226 max = res->Data.ExtAddress64.Address.Maximum; 227 length = res->Data.ExtAddress64.Address.AddressLength; 228 break; 229 } 230 if (length == 0) 231 break; 232 if (min + length - 1 != max && 233 (res->Data.Address.MinAddressFixed != ACPI_ADDRESS_FIXED || 234 res->Data.Address.MaxAddressFixed != ACPI_ADDRESS_FIXED)) 235 break; 236 flags = 0; 237 switch (res->Data.Address.ResourceType) { 238 case ACPI_MEMORY_RANGE: 239 type = SYS_RES_MEMORY; 240 if (res->Type != ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64) { 241 if (res->Data.Address.Info.Mem.Caching == 242 ACPI_PREFETCHABLE_MEMORY) 243 flags |= RF_PREFETCHABLE; 244 } else { 245 /* 246 * XXX: Parse prefetch flag out of 247 * TypeSpecific. 248 */ 249 } 250 break; 251 case ACPI_IO_RANGE: 252 type = SYS_RES_IOPORT; 253 break; 254 #ifdef PCI_RES_BUS 255 case ACPI_BUS_NUMBER_RANGE: 256 type = PCI_RES_BUS; 257 break; 258 #endif 259 default: 260 return (AE_OK); 261 } 262 263 if (min + length - 1 != max) 264 device_printf(sc->ap_dev, 265 "Length mismatch for %d range: %jx vs %jx\n", type, 266 (uintmax_t)(max - min + 1), (uintmax_t)length); 267 #ifdef __i386__ 268 if (min > ULONG_MAX) { 269 device_printf(sc->ap_dev, 270 "Ignoring %d range above 4GB (%#jx-%#jx)\n", 271 type, (uintmax_t)min, (uintmax_t)max); 272 break; 273 } 274 if (max > ULONG_MAX) { 275 device_printf(sc->ap_dev, 276 "Truncating end of %d range above 4GB (%#jx-%#jx)\n", 277 type, (uintmax_t)min, (uintmax_t)max); 278 max = ULONG_MAX; 279 } 280 #endif 281 error = pcib_host_res_decodes(&sc->ap_host_res, type, min, max, 282 flags); 283 if (error) 284 panic("Failed to manage %d range (%#jx-%#jx): %d", 285 type, (uintmax_t)min, (uintmax_t)max, error); 286 break; 287 default: 288 break; 289 } 290 return (AE_OK); 291 } 292 #endif 293 294 #if defined(NEW_PCIB) && defined(PCI_RES_BUS) 295 static int 296 first_decoded_bus(struct acpi_hpcib_softc *sc, rman_res_t *startp) 297 { 298 struct resource_list_entry *rle; 299 300 rle = resource_list_find(&sc->ap_host_res.hr_rl, PCI_RES_BUS, 0); 301 if (rle == NULL) 302 return (ENXIO); 303 *startp = rle->start; 304 return (0); 305 } 306 #endif 307 308 static int 309 acpi_pcib_osc(struct acpi_hpcib_softc *sc, uint32_t osc_ctl) 310 { 311 ACPI_STATUS status; 312 uint32_t cap_set[3]; 313 314 static uint8_t pci_host_bridge_uuid[ACPI_UUID_LENGTH] = { 315 0x5b, 0x4d, 0xdb, 0x33, 0xf7, 0x1f, 0x1c, 0x40, 316 0x96, 0x57, 0x74, 0x41, 0xc0, 0x3d, 0xd7, 0x66 317 }; 318 319 /* 320 * Don't invoke _OSC if a control is already granted. 321 * However, always invoke _OSC during attach when 0 is passed. 322 */ 323 if (osc_ctl != 0 && (sc->ap_osc_ctl & osc_ctl) == osc_ctl) 324 return (0); 325 326 /* Support Field: Extended PCI Config Space, PCI Segment Groups, MSI */ 327 cap_set[PCI_OSC_SUPPORT] = PCIM_OSC_SUPPORT_EXT_PCI_CONF | 328 PCIM_OSC_SUPPORT_SEG_GROUP | PCIM_OSC_SUPPORT_MSI; 329 /* Active State Power Management, Clock Power Management Capability */ 330 if (pci_enable_aspm) 331 cap_set[PCI_OSC_SUPPORT] |= PCIM_OSC_SUPPORT_ASPM | 332 PCIM_OSC_SUPPORT_CPMC; 333 334 /* Control Field */ 335 cap_set[PCI_OSC_CTL] = sc->ap_osc_ctl | osc_ctl; 336 337 status = acpi_EvaluateOSC(sc->ap_handle, pci_host_bridge_uuid, 1, 338 nitems(cap_set), cap_set, cap_set, false); 339 if (ACPI_FAILURE(status)) { 340 if (status == AE_NOT_FOUND) { 341 sc->ap_osc_ctl |= osc_ctl; 342 return (0); 343 } 344 device_printf(sc->ap_dev, "_OSC failed: %s\n", 345 AcpiFormatException(status)); 346 return (EIO); 347 } 348 349 /* 350 * _OSC may return an error in the status word, but will 351 * update the control mask always. _OSC should not revoke 352 * previously-granted controls. 353 */ 354 if ((cap_set[PCI_OSC_CTL] & sc->ap_osc_ctl) != sc->ap_osc_ctl) 355 device_printf(sc->ap_dev, "_OSC revoked %#x\n", 356 (cap_set[PCI_OSC_CTL] & sc->ap_osc_ctl) ^ sc->ap_osc_ctl); 357 sc->ap_osc_ctl = cap_set[PCI_OSC_CTL]; 358 if ((sc->ap_osc_ctl & osc_ctl) != osc_ctl) 359 return (EIO); 360 361 return (0); 362 } 363 364 static int 365 acpi_pcib_acpi_attach(device_t dev) 366 { 367 struct acpi_hpcib_softc *sc; 368 ACPI_STATUS status; 369 static int bus0_seen = 0; 370 u_int slot, func, busok; 371 #if defined(NEW_PCIB) && defined(PCI_RES_BUS) 372 struct resource *bus_res; 373 rman_res_t start; 374 int rid; 375 #endif 376 int error, domain; 377 uint8_t busno; 378 379 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 380 381 sc = device_get_softc(dev); 382 sc->ap_dev = dev; 383 sc->ap_handle = acpi_get_handle(dev); 384 385 /* 386 * Don't attach if we're not really there. 387 */ 388 if (!acpi_DeviceIsPresent(dev)) 389 return (ENXIO); 390 391 acpi_pcib_osc(sc, 0); 392 393 /* 394 * Get our segment number by evaluating _SEG. 395 * It's OK for this to not exist. 396 */ 397 status = acpi_GetInteger(sc->ap_handle, "_SEG", &sc->ap_segment); 398 if (ACPI_FAILURE(status)) { 399 if (status != AE_NOT_FOUND) { 400 device_printf(dev, "could not evaluate _SEG - %s\n", 401 AcpiFormatException(status)); 402 return_VALUE (ENXIO); 403 } 404 /* If it's not found, assume 0. */ 405 sc->ap_segment = 0; 406 } 407 408 /* 409 * Get the address (device and function) of the associated 410 * PCI-Host bridge device from _ADR. Assume we don't have one if 411 * it doesn't exist. 412 */ 413 status = acpi_GetInteger(sc->ap_handle, "_ADR", &sc->ap_addr); 414 if (ACPI_FAILURE(status)) { 415 device_printf(dev, "could not evaluate _ADR - %s\n", 416 AcpiFormatException(status)); 417 sc->ap_addr = -1; 418 } 419 420 #ifdef NEW_PCIB 421 /* 422 * Determine which address ranges this bridge decodes and setup 423 * resource managers for those ranges. 424 */ 425 if (pcib_host_res_init(sc->ap_dev, &sc->ap_host_res) != 0) 426 panic("failed to init hostb resources"); 427 if (!acpi_disabled("hostres")) { 428 status = AcpiWalkResources(sc->ap_handle, "_CRS", 429 acpi_pcib_producer_handler, sc); 430 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) 431 device_printf(sc->ap_dev, "failed to parse resources: %s\n", 432 AcpiFormatException(status)); 433 } 434 #endif 435 436 /* 437 * Get our base bus number by evaluating _BBN. 438 * If this doesn't work, we assume we're bus number 0. 439 * 440 * XXX note that it may also not exist in the case where we are 441 * meant to use a private configuration space mechanism for this bus, 442 * so we should dig out our resources and check to see if we have 443 * anything like that. How do we do this? 444 * XXX If we have the requisite information, and if we don't think the 445 * default PCI configuration space handlers can deal with this bus, 446 * we should attach our own handler. 447 * XXX invoke _REG on this for the PCI config space address space? 448 * XXX It seems many BIOS's with multiple Host-PCI bridges do not set 449 * _BBN correctly. They set _BBN to zero for all bridges. Thus, 450 * if _BBN is zero and PCI bus 0 already exists, we try to read our 451 * bus number from the configuration registers at address _ADR. 452 * We only do this for domain/segment 0 in the hopes that this is 453 * only needed for old single-domain machines. 454 */ 455 status = acpi_GetInteger(sc->ap_handle, "_BBN", &sc->ap_bus); 456 if (ACPI_FAILURE(status)) { 457 if (status != AE_NOT_FOUND) { 458 device_printf(dev, "could not evaluate _BBN - %s\n", 459 AcpiFormatException(status)); 460 return (ENXIO); 461 } else { 462 /* If it's not found, assume 0. */ 463 sc->ap_bus = 0; 464 } 465 } 466 467 /* 468 * If this is segment 0, the bus is zero, and PCI bus 0 already 469 * exists, read the bus number via PCI config space. 470 */ 471 busok = 1; 472 if (sc->ap_segment == 0 && sc->ap_bus == 0 && bus0_seen) { 473 busok = 0; 474 if (sc->ap_addr != -1) { 475 /* XXX: We assume bus 0. */ 476 slot = ACPI_ADR_PCI_SLOT(sc->ap_addr); 477 func = ACPI_ADR_PCI_FUNC(sc->ap_addr); 478 if (bootverbose) 479 device_printf(dev, "reading config registers from 0:%d:%d\n", 480 slot, func); 481 if (host_pcib_get_busno(pci_cfgregread, 0, slot, func, &busno) == 0) 482 device_printf(dev, "couldn't read bus number from cfg space\n"); 483 else { 484 sc->ap_bus = busno; 485 busok = 1; 486 } 487 } 488 } 489 490 #if defined(NEW_PCIB) && defined(PCI_RES_BUS) 491 /* 492 * If nothing else worked, hope that ACPI at least lays out the 493 * Host-PCI bridges in order and that as a result the next free 494 * bus number is our bus number. 495 */ 496 if (busok == 0) { 497 /* 498 * If we have a region of bus numbers, use the first 499 * number for our bus. 500 */ 501 if (first_decoded_bus(sc, &start) == 0) 502 sc->ap_bus = start; 503 else { 504 rid = 0; 505 bus_res = pci_domain_alloc_bus(sc->ap_segment, dev, &rid, 0, 506 PCI_BUSMAX, 1, 0); 507 if (bus_res == NULL) { 508 device_printf(dev, 509 "could not allocate bus number\n"); 510 pcib_host_res_free(dev, &sc->ap_host_res); 511 return (ENXIO); 512 } 513 sc->ap_bus = rman_get_start(bus_res); 514 pci_domain_release_bus(sc->ap_segment, dev, rid, bus_res); 515 } 516 } else { 517 /* 518 * Require the bus number from _BBN to match the start of any 519 * decoded range. 520 */ 521 if (first_decoded_bus(sc, &start) == 0 && sc->ap_bus != start) { 522 device_printf(dev, 523 "bus number %d does not match start of decoded range %ju\n", 524 sc->ap_bus, (uintmax_t)start); 525 pcib_host_res_free(dev, &sc->ap_host_res); 526 return (ENXIO); 527 } 528 } 529 #else 530 /* 531 * If nothing else worked, hope that ACPI at least lays out the 532 * host-PCI bridges in order and that as a result our unit number 533 * is actually our bus number. There are several reasons this 534 * might not be true. 535 */ 536 if (busok == 0) { 537 sc->ap_bus = device_get_unit(dev); 538 device_printf(dev, "trying bus number %d\n", sc->ap_bus); 539 } 540 #endif 541 542 /* If this is bus 0 on segment 0, note that it has been seen already. */ 543 if (sc->ap_segment == 0 && sc->ap_bus == 0) 544 bus0_seen = 1; 545 546 acpi_pcib_fetch_prt(dev, &sc->ap_prt); 547 548 error = bus_dma_tag_create(bus_get_dma_tag(dev), 1, 549 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, 550 NULL, NULL, BUS_SPACE_MAXSIZE, BUS_SPACE_UNRESTRICTED, 551 BUS_SPACE_MAXSIZE, 0, NULL, NULL, &sc->ap_dma_tag); 552 if (error != 0) 553 goto errout; 554 error = bus_get_domain(dev, &domain); 555 if (error == 0) 556 error = bus_dma_tag_set_domain(sc->ap_dma_tag, domain); 557 /* Don't fail to attach if the domain can't be queried or set. */ 558 error = 0; 559 560 bus_generic_probe(dev); 561 if (device_add_child(dev, "pci", -1) == NULL) { 562 bus_dma_tag_destroy(sc->ap_dma_tag); 563 sc->ap_dma_tag = NULL; 564 error = ENXIO; 565 goto errout; 566 } 567 return (bus_generic_attach(dev)); 568 569 errout: 570 device_printf(device_get_parent(dev), "couldn't attach pci bus\n"); 571 #if defined(NEW_PCIB) && defined(PCI_RES_BUS) 572 pcib_host_res_free(dev, &sc->ap_host_res); 573 #endif 574 return (error); 575 } 576 577 /* 578 * Support for standard PCI bridge ivars. 579 */ 580 static int 581 acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 582 { 583 struct acpi_hpcib_softc *sc = device_get_softc(dev); 584 585 switch (which) { 586 case PCIB_IVAR_DOMAIN: 587 *result = sc->ap_segment; 588 return (0); 589 case PCIB_IVAR_BUS: 590 *result = sc->ap_bus; 591 return (0); 592 case ACPI_IVAR_HANDLE: 593 *result = (uintptr_t)sc->ap_handle; 594 return (0); 595 case ACPI_IVAR_FLAGS: 596 *result = (uintptr_t)sc->ap_flags; 597 return (0); 598 } 599 return (ENOENT); 600 } 601 602 static int 603 acpi_pcib_write_ivar(device_t dev, device_t child, int which, uintptr_t value) 604 { 605 struct acpi_hpcib_softc *sc = device_get_softc(dev); 606 607 switch (which) { 608 case PCIB_IVAR_DOMAIN: 609 return (EINVAL); 610 case PCIB_IVAR_BUS: 611 sc->ap_bus = value; 612 return (0); 613 case ACPI_IVAR_HANDLE: 614 sc->ap_handle = (ACPI_HANDLE)value; 615 return (0); 616 case ACPI_IVAR_FLAGS: 617 sc->ap_flags = (int)value; 618 return (0); 619 } 620 return (ENOENT); 621 } 622 623 static uint32_t 624 acpi_pcib_read_config(device_t dev, u_int bus, u_int slot, u_int func, 625 u_int reg, int bytes) 626 { 627 return (pci_cfgregread(bus, slot, func, reg, bytes)); 628 } 629 630 static void 631 acpi_pcib_write_config(device_t dev, u_int bus, u_int slot, u_int func, 632 u_int reg, uint32_t data, int bytes) 633 { 634 pci_cfgregwrite(bus, slot, func, reg, data, bytes); 635 } 636 637 static int 638 acpi_pcib_acpi_route_interrupt(device_t pcib, device_t dev, int pin) 639 { 640 struct acpi_hpcib_softc *sc = device_get_softc(pcib); 641 642 return (acpi_pcib_route_interrupt(pcib, dev, pin, &sc->ap_prt)); 643 } 644 645 static int 646 acpi_pcib_alloc_msi(device_t pcib, device_t dev, int count, int maxcount, 647 int *irqs) 648 { 649 device_t bus; 650 651 bus = device_get_parent(pcib); 652 return (PCIB_ALLOC_MSI(device_get_parent(bus), dev, count, maxcount, 653 irqs)); 654 } 655 656 static int 657 acpi_pcib_alloc_msix(device_t pcib, device_t dev, int *irq) 658 { 659 device_t bus; 660 661 bus = device_get_parent(pcib); 662 return (PCIB_ALLOC_MSIX(device_get_parent(bus), dev, irq)); 663 } 664 665 static int 666 acpi_pcib_map_msi(device_t pcib, device_t dev, int irq, uint64_t *addr, 667 uint32_t *data) 668 { 669 struct acpi_hpcib_softc *sc; 670 device_t bus, hostb; 671 int error; 672 673 bus = device_get_parent(pcib); 674 error = PCIB_MAP_MSI(device_get_parent(bus), dev, irq, addr, data); 675 if (error) 676 return (error); 677 678 sc = device_get_softc(pcib); 679 if (sc->ap_addr == -1) 680 return (0); 681 /* XXX: Assumes all bridges are on bus 0. */ 682 hostb = pci_find_dbsf(sc->ap_segment, 0, ACPI_ADR_PCI_SLOT(sc->ap_addr), 683 ACPI_ADR_PCI_FUNC(sc->ap_addr)); 684 if (hostb != NULL) 685 pci_ht_map_msi(hostb, *addr); 686 return (0); 687 } 688 689 struct resource * 690 acpi_pcib_acpi_alloc_resource(device_t dev, device_t child, int type, int *rid, 691 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) 692 { 693 #ifdef NEW_PCIB 694 struct acpi_hpcib_softc *sc; 695 struct resource *res; 696 #endif 697 698 #if defined(__i386__) || defined(__amd64__) 699 start = hostb_alloc_start(type, start, end, count); 700 #endif 701 702 #ifdef NEW_PCIB 703 sc = device_get_softc(dev); 704 #ifdef PCI_RES_BUS 705 if (type == PCI_RES_BUS) 706 return (pci_domain_alloc_bus(sc->ap_segment, child, rid, start, end, 707 count, flags)); 708 #endif 709 res = pcib_host_res_alloc(&sc->ap_host_res, child, type, rid, start, end, 710 count, flags); 711 712 /* 713 * XXX: If this is a request for a specific range, assume it is 714 * correct and pass it up to the parent. What we probably want to 715 * do long-term is explicitly trust any firmware-configured 716 * resources during the initial bus scan on boot and then disable 717 * this after that. 718 */ 719 if (res == NULL && start + count - 1 == end) 720 res = bus_generic_alloc_resource(dev, child, type, rid, start, end, 721 count, flags); 722 return (res); 723 #else 724 return (bus_generic_alloc_resource(dev, child, type, rid, start, end, 725 count, flags)); 726 #endif 727 } 728 729 #ifdef NEW_PCIB 730 int 731 acpi_pcib_acpi_adjust_resource(device_t dev, device_t child, int type, 732 struct resource *r, rman_res_t start, rman_res_t end) 733 { 734 struct acpi_hpcib_softc *sc; 735 736 sc = device_get_softc(dev); 737 #ifdef PCI_RES_BUS 738 if (type == PCI_RES_BUS) 739 return (pci_domain_adjust_bus(sc->ap_segment, child, r, start, 740 end)); 741 #endif 742 return (pcib_host_res_adjust(&sc->ap_host_res, child, type, r, start, 743 end)); 744 } 745 746 #ifdef PCI_RES_BUS 747 int 748 acpi_pcib_acpi_release_resource(device_t dev, device_t child, int type, int rid, 749 struct resource *r) 750 { 751 struct acpi_hpcib_softc *sc; 752 753 sc = device_get_softc(dev); 754 if (type == PCI_RES_BUS) 755 return (pci_domain_release_bus(sc->ap_segment, child, rid, r)); 756 return (bus_generic_release_resource(dev, child, type, rid, r)); 757 } 758 #endif 759 #endif 760 761 static int 762 acpi_pcib_request_feature(device_t pcib, device_t dev, enum pci_feature feature) 763 { 764 uint32_t osc_ctl; 765 struct acpi_hpcib_softc *sc; 766 767 sc = device_get_softc(pcib); 768 769 switch (feature) { 770 case PCI_FEATURE_HP: 771 osc_ctl = PCIM_OSC_CTL_PCIE_HP; 772 break; 773 case PCI_FEATURE_AER: 774 osc_ctl = PCIM_OSC_CTL_PCIE_AER; 775 break; 776 default: 777 return (EINVAL); 778 } 779 780 return (acpi_pcib_osc(sc, osc_ctl)); 781 } 782 783 static bus_dma_tag_t 784 acpi_pcib_get_dma_tag(device_t bus, device_t child) 785 { 786 struct acpi_hpcib_softc *sc; 787 788 sc = device_get_softc(bus); 789 790 return (sc->ap_dma_tag); 791 } 792