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 DEFINE_CLASS_0(pcib, acpi_pcib_acpi_driver, acpi_pcib_acpi_methods, 160 sizeof(struct acpi_hpcib_softc)); 161 DRIVER_MODULE(acpi_pcib, acpi, acpi_pcib_acpi_driver, 0, 0); 162 MODULE_DEPEND(acpi_pcib, acpi, 1, 1, 1); 163 164 static int 165 acpi_pcib_acpi_probe(device_t dev) 166 { 167 ACPI_DEVICE_INFO *devinfo; 168 ACPI_HANDLE h; 169 int root; 170 171 if (acpi_disabled("pcib") || (h = acpi_get_handle(dev)) == NULL || 172 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 173 return (ENXIO); 174 root = (devinfo->Flags & ACPI_PCI_ROOT_BRIDGE) != 0; 175 AcpiOsFree(devinfo); 176 if (!root || pci_cfgregopen() == 0) 177 return (ENXIO); 178 179 device_set_desc(dev, "ACPI Host-PCI bridge"); 180 return (0); 181 } 182 183 #ifdef NEW_PCIB 184 static ACPI_STATUS 185 acpi_pcib_producer_handler(ACPI_RESOURCE *res, void *context) 186 { 187 struct acpi_hpcib_softc *sc; 188 UINT64 length, min, max; 189 u_int flags; 190 int error, type; 191 192 sc = context; 193 switch (res->Type) { 194 case ACPI_RESOURCE_TYPE_START_DEPENDENT: 195 case ACPI_RESOURCE_TYPE_END_DEPENDENT: 196 panic("host bridge has depenedent resources"); 197 case ACPI_RESOURCE_TYPE_ADDRESS16: 198 case ACPI_RESOURCE_TYPE_ADDRESS32: 199 case ACPI_RESOURCE_TYPE_ADDRESS64: 200 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64: 201 if (res->Data.Address.ProducerConsumer != ACPI_PRODUCER) 202 break; 203 switch (res->Type) { 204 case ACPI_RESOURCE_TYPE_ADDRESS16: 205 min = res->Data.Address16.Address.Minimum; 206 max = res->Data.Address16.Address.Maximum; 207 length = res->Data.Address16.Address.AddressLength; 208 break; 209 case ACPI_RESOURCE_TYPE_ADDRESS32: 210 min = res->Data.Address32.Address.Minimum; 211 max = res->Data.Address32.Address.Maximum; 212 length = res->Data.Address32.Address.AddressLength; 213 break; 214 case ACPI_RESOURCE_TYPE_ADDRESS64: 215 min = res->Data.Address64.Address.Minimum; 216 max = res->Data.Address64.Address.Maximum; 217 length = res->Data.Address64.Address.AddressLength; 218 break; 219 default: 220 KASSERT(res->Type == 221 ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64, 222 ("should never happen")); 223 min = res->Data.ExtAddress64.Address.Minimum; 224 max = res->Data.ExtAddress64.Address.Maximum; 225 length = res->Data.ExtAddress64.Address.AddressLength; 226 break; 227 } 228 if (length == 0) 229 break; 230 if (min + length - 1 != max && 231 (res->Data.Address.MinAddressFixed != ACPI_ADDRESS_FIXED || 232 res->Data.Address.MaxAddressFixed != ACPI_ADDRESS_FIXED)) 233 break; 234 flags = 0; 235 switch (res->Data.Address.ResourceType) { 236 case ACPI_MEMORY_RANGE: 237 type = SYS_RES_MEMORY; 238 if (res->Type != ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64) { 239 if (res->Data.Address.Info.Mem.Caching == 240 ACPI_PREFETCHABLE_MEMORY) 241 flags |= RF_PREFETCHABLE; 242 } else { 243 /* 244 * XXX: Parse prefetch flag out of 245 * TypeSpecific. 246 */ 247 } 248 break; 249 case ACPI_IO_RANGE: 250 type = SYS_RES_IOPORT; 251 break; 252 #ifdef PCI_RES_BUS 253 case ACPI_BUS_NUMBER_RANGE: 254 type = PCI_RES_BUS; 255 break; 256 #endif 257 default: 258 return (AE_OK); 259 } 260 261 if (min + length - 1 != max) 262 device_printf(sc->ap_dev, 263 "Length mismatch for %d range: %jx vs %jx\n", type, 264 (uintmax_t)(max - min + 1), (uintmax_t)length); 265 #ifdef __i386__ 266 if (min > ULONG_MAX) { 267 device_printf(sc->ap_dev, 268 "Ignoring %d range above 4GB (%#jx-%#jx)\n", 269 type, (uintmax_t)min, (uintmax_t)max); 270 break; 271 } 272 if (max > ULONG_MAX) { 273 device_printf(sc->ap_dev, 274 "Truncating end of %d range above 4GB (%#jx-%#jx)\n", 275 type, (uintmax_t)min, (uintmax_t)max); 276 max = ULONG_MAX; 277 } 278 #endif 279 error = pcib_host_res_decodes(&sc->ap_host_res, type, min, max, 280 flags); 281 if (error) 282 panic("Failed to manage %d range (%#jx-%#jx): %d", 283 type, (uintmax_t)min, (uintmax_t)max, error); 284 break; 285 default: 286 break; 287 } 288 return (AE_OK); 289 } 290 #endif 291 292 #if defined(NEW_PCIB) && defined(PCI_RES_BUS) 293 static int 294 first_decoded_bus(struct acpi_hpcib_softc *sc, rman_res_t *startp) 295 { 296 struct resource_list_entry *rle; 297 298 rle = resource_list_find(&sc->ap_host_res.hr_rl, PCI_RES_BUS, 0); 299 if (rle == NULL) 300 return (ENXIO); 301 *startp = rle->start; 302 return (0); 303 } 304 #endif 305 306 static int 307 acpi_pcib_osc(struct acpi_hpcib_softc *sc, uint32_t osc_ctl) 308 { 309 ACPI_STATUS status; 310 uint32_t cap_set[3]; 311 312 static uint8_t pci_host_bridge_uuid[ACPI_UUID_LENGTH] = { 313 0x5b, 0x4d, 0xdb, 0x33, 0xf7, 0x1f, 0x1c, 0x40, 314 0x96, 0x57, 0x74, 0x41, 0xc0, 0x3d, 0xd7, 0x66 315 }; 316 317 /* 318 * Don't invoke _OSC if a control is already granted. 319 * However, always invoke _OSC during attach when 0 is passed. 320 */ 321 if (osc_ctl != 0 && (sc->ap_osc_ctl & osc_ctl) == osc_ctl) 322 return (0); 323 324 /* Support Field: Extended PCI Config Space, PCI Segment Groups, MSI */ 325 cap_set[PCI_OSC_SUPPORT] = PCIM_OSC_SUPPORT_EXT_PCI_CONF | 326 PCIM_OSC_SUPPORT_SEG_GROUP | PCIM_OSC_SUPPORT_MSI; 327 /* Active State Power Management, Clock Power Management Capability */ 328 if (pci_enable_aspm) 329 cap_set[PCI_OSC_SUPPORT] |= PCIM_OSC_SUPPORT_ASPM | 330 PCIM_OSC_SUPPORT_CPMC; 331 332 /* Control Field */ 333 cap_set[PCI_OSC_CTL] = sc->ap_osc_ctl | osc_ctl; 334 335 status = acpi_EvaluateOSC(sc->ap_handle, pci_host_bridge_uuid, 1, 336 nitems(cap_set), cap_set, cap_set, false); 337 if (ACPI_FAILURE(status)) { 338 if (status == AE_NOT_FOUND) { 339 sc->ap_osc_ctl |= osc_ctl; 340 return (0); 341 } 342 device_printf(sc->ap_dev, "_OSC failed: %s\n", 343 AcpiFormatException(status)); 344 return (EIO); 345 } 346 347 /* 348 * _OSC may return an error in the status word, but will 349 * update the control mask always. _OSC should not revoke 350 * previously-granted controls. 351 */ 352 if ((cap_set[PCI_OSC_CTL] & sc->ap_osc_ctl) != sc->ap_osc_ctl) 353 device_printf(sc->ap_dev, "_OSC revoked %#x\n", 354 (cap_set[PCI_OSC_CTL] & sc->ap_osc_ctl) ^ sc->ap_osc_ctl); 355 sc->ap_osc_ctl = cap_set[PCI_OSC_CTL]; 356 if ((sc->ap_osc_ctl & osc_ctl) != osc_ctl) 357 return (EIO); 358 359 return (0); 360 } 361 362 static int 363 acpi_pcib_acpi_attach(device_t dev) 364 { 365 struct acpi_hpcib_softc *sc; 366 ACPI_STATUS status; 367 static int bus0_seen = 0; 368 u_int slot, func, busok; 369 #if defined(NEW_PCIB) && defined(PCI_RES_BUS) 370 struct resource *bus_res; 371 rman_res_t start; 372 int rid; 373 #endif 374 int error, domain; 375 uint8_t busno; 376 377 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 378 379 sc = device_get_softc(dev); 380 sc->ap_dev = dev; 381 sc->ap_handle = acpi_get_handle(dev); 382 383 /* 384 * Don't attach if we're not really there. 385 */ 386 if (!acpi_DeviceIsPresent(dev)) 387 return (ENXIO); 388 389 acpi_pcib_osc(sc, 0); 390 391 /* 392 * Get our segment number by evaluating _SEG. 393 * It's OK for this to not exist. 394 */ 395 status = acpi_GetInteger(sc->ap_handle, "_SEG", &sc->ap_segment); 396 if (ACPI_FAILURE(status)) { 397 if (status != AE_NOT_FOUND) { 398 device_printf(dev, "could not evaluate _SEG - %s\n", 399 AcpiFormatException(status)); 400 return_VALUE (ENXIO); 401 } 402 /* If it's not found, assume 0. */ 403 sc->ap_segment = 0; 404 } 405 406 /* 407 * Get the address (device and function) of the associated 408 * PCI-Host bridge device from _ADR. Assume we don't have one if 409 * it doesn't exist. 410 */ 411 status = acpi_GetInteger(sc->ap_handle, "_ADR", &sc->ap_addr); 412 if (ACPI_FAILURE(status)) { 413 device_printf(dev, "could not evaluate _ADR - %s\n", 414 AcpiFormatException(status)); 415 sc->ap_addr = -1; 416 } 417 418 #ifdef NEW_PCIB 419 /* 420 * Determine which address ranges this bridge decodes and setup 421 * resource managers for those ranges. 422 */ 423 if (pcib_host_res_init(sc->ap_dev, &sc->ap_host_res) != 0) 424 panic("failed to init hostb resources"); 425 if (!acpi_disabled("hostres")) { 426 status = AcpiWalkResources(sc->ap_handle, "_CRS", 427 acpi_pcib_producer_handler, sc); 428 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) 429 device_printf(sc->ap_dev, "failed to parse resources: %s\n", 430 AcpiFormatException(status)); 431 } 432 #endif 433 434 /* 435 * Get our base bus number by evaluating _BBN. 436 * If this doesn't work, we assume we're bus number 0. 437 * 438 * XXX note that it may also not exist in the case where we are 439 * meant to use a private configuration space mechanism for this bus, 440 * so we should dig out our resources and check to see if we have 441 * anything like that. How do we do this? 442 * XXX If we have the requisite information, and if we don't think the 443 * default PCI configuration space handlers can deal with this bus, 444 * we should attach our own handler. 445 * XXX invoke _REG on this for the PCI config space address space? 446 * XXX It seems many BIOS's with multiple Host-PCI bridges do not set 447 * _BBN correctly. They set _BBN to zero for all bridges. Thus, 448 * if _BBN is zero and PCI bus 0 already exists, we try to read our 449 * bus number from the configuration registers at address _ADR. 450 * We only do this for domain/segment 0 in the hopes that this is 451 * only needed for old single-domain machines. 452 */ 453 status = acpi_GetInteger(sc->ap_handle, "_BBN", &sc->ap_bus); 454 if (ACPI_FAILURE(status)) { 455 if (status != AE_NOT_FOUND) { 456 device_printf(dev, "could not evaluate _BBN - %s\n", 457 AcpiFormatException(status)); 458 return (ENXIO); 459 } else { 460 /* If it's not found, assume 0. */ 461 sc->ap_bus = 0; 462 } 463 } 464 465 /* 466 * If this is segment 0, the bus is zero, and PCI bus 0 already 467 * exists, read the bus number via PCI config space. 468 */ 469 busok = 1; 470 if (sc->ap_segment == 0 && sc->ap_bus == 0 && bus0_seen) { 471 busok = 0; 472 if (sc->ap_addr != -1) { 473 /* XXX: We assume bus 0. */ 474 slot = ACPI_ADR_PCI_SLOT(sc->ap_addr); 475 func = ACPI_ADR_PCI_FUNC(sc->ap_addr); 476 if (bootverbose) 477 device_printf(dev, "reading config registers from 0:%d:%d\n", 478 slot, func); 479 if (host_pcib_get_busno(pci_cfgregread, 0, slot, func, &busno) == 0) 480 device_printf(dev, "couldn't read bus number from cfg space\n"); 481 else { 482 sc->ap_bus = busno; 483 busok = 1; 484 } 485 } 486 } 487 488 #if defined(NEW_PCIB) && defined(PCI_RES_BUS) 489 /* 490 * If nothing else worked, hope that ACPI at least lays out the 491 * Host-PCI bridges in order and that as a result the next free 492 * bus number is our bus number. 493 */ 494 if (busok == 0) { 495 /* 496 * If we have a region of bus numbers, use the first 497 * number for our bus. 498 */ 499 if (first_decoded_bus(sc, &start) == 0) 500 sc->ap_bus = start; 501 else { 502 rid = 0; 503 bus_res = pci_domain_alloc_bus(sc->ap_segment, dev, &rid, 0, 504 PCI_BUSMAX, 1, 0); 505 if (bus_res == NULL) { 506 device_printf(dev, 507 "could not allocate bus number\n"); 508 pcib_host_res_free(dev, &sc->ap_host_res); 509 return (ENXIO); 510 } 511 sc->ap_bus = rman_get_start(bus_res); 512 pci_domain_release_bus(sc->ap_segment, dev, rid, bus_res); 513 } 514 } else { 515 /* 516 * Require the bus number from _BBN to match the start of any 517 * decoded range. 518 */ 519 if (first_decoded_bus(sc, &start) == 0 && sc->ap_bus != start) { 520 device_printf(dev, 521 "bus number %d does not match start of decoded range %ju\n", 522 sc->ap_bus, (uintmax_t)start); 523 pcib_host_res_free(dev, &sc->ap_host_res); 524 return (ENXIO); 525 } 526 } 527 #else 528 /* 529 * If nothing else worked, hope that ACPI at least lays out the 530 * host-PCI bridges in order and that as a result our unit number 531 * is actually our bus number. There are several reasons this 532 * might not be true. 533 */ 534 if (busok == 0) { 535 sc->ap_bus = device_get_unit(dev); 536 device_printf(dev, "trying bus number %d\n", sc->ap_bus); 537 } 538 #endif 539 540 /* If this is bus 0 on segment 0, note that it has been seen already. */ 541 if (sc->ap_segment == 0 && sc->ap_bus == 0) 542 bus0_seen = 1; 543 544 acpi_pcib_fetch_prt(dev, &sc->ap_prt); 545 546 error = bus_dma_tag_create(bus_get_dma_tag(dev), 1, 547 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, 548 NULL, NULL, BUS_SPACE_MAXSIZE, BUS_SPACE_UNRESTRICTED, 549 BUS_SPACE_MAXSIZE, 0, NULL, NULL, &sc->ap_dma_tag); 550 if (error != 0) 551 goto errout; 552 error = bus_get_domain(dev, &domain); 553 if (error == 0) 554 error = bus_dma_tag_set_domain(sc->ap_dma_tag, domain); 555 /* Don't fail to attach if the domain can't be queried or set. */ 556 error = 0; 557 558 bus_generic_probe(dev); 559 if (device_add_child(dev, "pci", -1) == NULL) { 560 bus_dma_tag_destroy(sc->ap_dma_tag); 561 sc->ap_dma_tag = NULL; 562 error = ENXIO; 563 goto errout; 564 } 565 return (bus_generic_attach(dev)); 566 567 errout: 568 device_printf(device_get_parent(dev), "couldn't attach pci bus\n"); 569 #if defined(NEW_PCIB) && defined(PCI_RES_BUS) 570 pcib_host_res_free(dev, &sc->ap_host_res); 571 #endif 572 return (error); 573 } 574 575 /* 576 * Support for standard PCI bridge ivars. 577 */ 578 static int 579 acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 580 { 581 struct acpi_hpcib_softc *sc = device_get_softc(dev); 582 583 switch (which) { 584 case PCIB_IVAR_DOMAIN: 585 *result = sc->ap_segment; 586 return (0); 587 case PCIB_IVAR_BUS: 588 *result = sc->ap_bus; 589 return (0); 590 case ACPI_IVAR_HANDLE: 591 *result = (uintptr_t)sc->ap_handle; 592 return (0); 593 case ACPI_IVAR_FLAGS: 594 *result = (uintptr_t)sc->ap_flags; 595 return (0); 596 } 597 return (ENOENT); 598 } 599 600 static int 601 acpi_pcib_write_ivar(device_t dev, device_t child, int which, uintptr_t value) 602 { 603 struct acpi_hpcib_softc *sc = device_get_softc(dev); 604 605 switch (which) { 606 case PCIB_IVAR_DOMAIN: 607 return (EINVAL); 608 case PCIB_IVAR_BUS: 609 sc->ap_bus = value; 610 return (0); 611 case ACPI_IVAR_HANDLE: 612 sc->ap_handle = (ACPI_HANDLE)value; 613 return (0); 614 case ACPI_IVAR_FLAGS: 615 sc->ap_flags = (int)value; 616 return (0); 617 } 618 return (ENOENT); 619 } 620 621 static uint32_t 622 acpi_pcib_read_config(device_t dev, u_int bus, u_int slot, u_int func, 623 u_int reg, int bytes) 624 { 625 return (pci_cfgregread(bus, slot, func, reg, bytes)); 626 } 627 628 static void 629 acpi_pcib_write_config(device_t dev, u_int bus, u_int slot, u_int func, 630 u_int reg, uint32_t data, int bytes) 631 { 632 pci_cfgregwrite(bus, slot, func, reg, data, bytes); 633 } 634 635 static int 636 acpi_pcib_acpi_route_interrupt(device_t pcib, device_t dev, int pin) 637 { 638 struct acpi_hpcib_softc *sc = device_get_softc(pcib); 639 640 return (acpi_pcib_route_interrupt(pcib, dev, pin, &sc->ap_prt)); 641 } 642 643 static int 644 acpi_pcib_alloc_msi(device_t pcib, device_t dev, int count, int maxcount, 645 int *irqs) 646 { 647 device_t bus; 648 649 bus = device_get_parent(pcib); 650 return (PCIB_ALLOC_MSI(device_get_parent(bus), dev, count, maxcount, 651 irqs)); 652 } 653 654 static int 655 acpi_pcib_alloc_msix(device_t pcib, device_t dev, int *irq) 656 { 657 device_t bus; 658 659 bus = device_get_parent(pcib); 660 return (PCIB_ALLOC_MSIX(device_get_parent(bus), dev, irq)); 661 } 662 663 static int 664 acpi_pcib_map_msi(device_t pcib, device_t dev, int irq, uint64_t *addr, 665 uint32_t *data) 666 { 667 struct acpi_hpcib_softc *sc; 668 device_t bus, hostb; 669 int error; 670 671 bus = device_get_parent(pcib); 672 error = PCIB_MAP_MSI(device_get_parent(bus), dev, irq, addr, data); 673 if (error) 674 return (error); 675 676 sc = device_get_softc(pcib); 677 if (sc->ap_addr == -1) 678 return (0); 679 /* XXX: Assumes all bridges are on bus 0. */ 680 hostb = pci_find_dbsf(sc->ap_segment, 0, ACPI_ADR_PCI_SLOT(sc->ap_addr), 681 ACPI_ADR_PCI_FUNC(sc->ap_addr)); 682 if (hostb != NULL) 683 pci_ht_map_msi(hostb, *addr); 684 return (0); 685 } 686 687 struct resource * 688 acpi_pcib_acpi_alloc_resource(device_t dev, device_t child, int type, int *rid, 689 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) 690 { 691 #ifdef NEW_PCIB 692 struct acpi_hpcib_softc *sc; 693 struct resource *res; 694 #endif 695 696 #if defined(__i386__) || defined(__amd64__) 697 start = hostb_alloc_start(type, start, end, count); 698 #endif 699 700 #ifdef NEW_PCIB 701 sc = device_get_softc(dev); 702 #ifdef PCI_RES_BUS 703 if (type == PCI_RES_BUS) 704 return (pci_domain_alloc_bus(sc->ap_segment, child, rid, start, end, 705 count, flags)); 706 #endif 707 res = pcib_host_res_alloc(&sc->ap_host_res, child, type, rid, start, end, 708 count, flags); 709 710 /* 711 * XXX: If this is a request for a specific range, assume it is 712 * correct and pass it up to the parent. What we probably want to 713 * do long-term is explicitly trust any firmware-configured 714 * resources during the initial bus scan on boot and then disable 715 * this after that. 716 */ 717 if (res == NULL && start + count - 1 == end) 718 res = bus_generic_alloc_resource(dev, child, type, rid, start, end, 719 count, flags); 720 return (res); 721 #else 722 return (bus_generic_alloc_resource(dev, child, type, rid, start, end, 723 count, flags)); 724 #endif 725 } 726 727 #ifdef NEW_PCIB 728 int 729 acpi_pcib_acpi_adjust_resource(device_t dev, device_t child, int type, 730 struct resource *r, rman_res_t start, rman_res_t end) 731 { 732 struct acpi_hpcib_softc *sc; 733 734 sc = device_get_softc(dev); 735 #ifdef PCI_RES_BUS 736 if (type == PCI_RES_BUS) 737 return (pci_domain_adjust_bus(sc->ap_segment, child, r, start, 738 end)); 739 #endif 740 return (pcib_host_res_adjust(&sc->ap_host_res, child, type, r, start, 741 end)); 742 } 743 744 #ifdef PCI_RES_BUS 745 int 746 acpi_pcib_acpi_release_resource(device_t dev, device_t child, int type, int rid, 747 struct resource *r) 748 { 749 struct acpi_hpcib_softc *sc; 750 751 sc = device_get_softc(dev); 752 if (type == PCI_RES_BUS) 753 return (pci_domain_release_bus(sc->ap_segment, child, rid, r)); 754 return (bus_generic_release_resource(dev, child, type, rid, r)); 755 } 756 #endif 757 #endif 758 759 static int 760 acpi_pcib_request_feature(device_t pcib, device_t dev, enum pci_feature feature) 761 { 762 uint32_t osc_ctl; 763 struct acpi_hpcib_softc *sc; 764 765 sc = device_get_softc(pcib); 766 767 switch (feature) { 768 case PCI_FEATURE_HP: 769 osc_ctl = PCIM_OSC_CTL_PCIE_HP; 770 break; 771 case PCI_FEATURE_AER: 772 osc_ctl = PCIM_OSC_CTL_PCIE_AER; 773 break; 774 default: 775 return (EINVAL); 776 } 777 778 return (acpi_pcib_osc(sc, osc_ctl)); 779 } 780 781 static bus_dma_tag_t 782 acpi_pcib_get_dma_tag(device_t bus, device_t child) 783 { 784 struct acpi_hpcib_softc *sc; 785 786 sc = device_get_softc(bus); 787 788 return (sc->ap_dma_tag); 789 } 790