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