Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/dev/acpica/acpi_pcib_acpi.c
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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 <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 int ap_flags; 62 63 int ap_segment; /* PCI domain */ 64 int ap_bus; /* bios-assigned bus number */ 65 int ap_addr; /* device/func of PCI-Host bridge */ 66 67 ACPI_BUFFER ap_prt; /* interrupt routing table */ 68 #ifdef NEW_PCIB 69 struct pcib_host_resources ap_host_res; 70 #endif 71 }; 72 73 static int acpi_pcib_acpi_probe(device_t bus); 74 static int acpi_pcib_acpi_attach(device_t bus); 75 static int acpi_pcib_read_ivar(device_t dev, device_t child, 76 int which, uintptr_t *result); 77 static int acpi_pcib_write_ivar(device_t dev, device_t child, 78 int which, uintptr_t value); 79 static uint32_t acpi_pcib_read_config(device_t dev, u_int bus, 80 u_int slot, u_int func, u_int reg, int bytes); 81 static void acpi_pcib_write_config(device_t dev, u_int bus, 82 u_int slot, u_int func, u_int reg, uint32_t data, 83 int bytes); 84 static int acpi_pcib_acpi_route_interrupt(device_t pcib, 85 device_t dev, int pin); 86 static int acpi_pcib_alloc_msi(device_t pcib, device_t dev, 87 int count, int maxcount, int *irqs); 88 static int acpi_pcib_map_msi(device_t pcib, device_t dev, 89 int irq, uint64_t *addr, uint32_t *data); 90 static int acpi_pcib_alloc_msix(device_t pcib, device_t dev, 91 int *irq); 92 static struct resource *acpi_pcib_acpi_alloc_resource(device_t dev, 93 device_t child, int type, int *rid, 94 u_long start, u_long end, u_long count, 95 u_int flags); 96 #ifdef NEW_PCIB 97 static int acpi_pcib_acpi_adjust_resource(device_t dev, 98 device_t child, int type, struct resource *r, 99 u_long start, u_long end); 100 #ifdef PCI_RES_BUS 101 static int acpi_pcib_acpi_release_resource(device_t dev, 102 device_t child, int type, int rid, 103 struct resource *r); 104 #endif 105 #endif 106 107 static device_method_t acpi_pcib_acpi_methods[] = { 108 /* Device interface */ 109 DEVMETHOD(device_probe, acpi_pcib_acpi_probe), 110 DEVMETHOD(device_attach, acpi_pcib_acpi_attach), 111 DEVMETHOD(device_shutdown, bus_generic_shutdown), 112 DEVMETHOD(device_suspend, bus_generic_suspend), 113 DEVMETHOD(device_resume, bus_generic_resume), 114 115 /* Bus interface */ 116 DEVMETHOD(bus_read_ivar, acpi_pcib_read_ivar), 117 DEVMETHOD(bus_write_ivar, acpi_pcib_write_ivar), 118 DEVMETHOD(bus_alloc_resource, acpi_pcib_acpi_alloc_resource), 119 #ifdef NEW_PCIB 120 DEVMETHOD(bus_adjust_resource, acpi_pcib_acpi_adjust_resource), 121 #else 122 DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource), 123 #endif 124 #if defined(NEW_PCIB) && defined(PCI_RES_BUS) 125 DEVMETHOD(bus_release_resource, acpi_pcib_acpi_release_resource), 126 #else 127 DEVMETHOD(bus_release_resource, bus_generic_release_resource), 128 #endif 129 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 130 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 131 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 132 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 133 134 /* pcib interface */ 135 DEVMETHOD(pcib_maxslots, pcib_maxslots), 136 DEVMETHOD(pcib_read_config, acpi_pcib_read_config), 137 DEVMETHOD(pcib_write_config, acpi_pcib_write_config), 138 DEVMETHOD(pcib_route_interrupt, acpi_pcib_acpi_route_interrupt), 139 DEVMETHOD(pcib_alloc_msi, acpi_pcib_alloc_msi), 140 DEVMETHOD(pcib_release_msi, pcib_release_msi), 141 DEVMETHOD(pcib_alloc_msix, acpi_pcib_alloc_msix), 142 DEVMETHOD(pcib_release_msix, pcib_release_msix), 143 DEVMETHOD(pcib_map_msi, acpi_pcib_map_msi), 144 DEVMETHOD(pcib_power_for_sleep, acpi_pcib_power_for_sleep), 145 146 DEVMETHOD_END 147 }; 148 149 static devclass_t pcib_devclass; 150 151 DEFINE_CLASS_0(pcib, acpi_pcib_acpi_driver, acpi_pcib_acpi_methods, 152 sizeof(struct acpi_hpcib_softc)); 153 DRIVER_MODULE(acpi_pcib, acpi, acpi_pcib_acpi_driver, pcib_devclass, 0, 0); 154 MODULE_DEPEND(acpi_pcib, acpi, 1, 1, 1); 155 156 static int 157 acpi_pcib_acpi_probe(device_t dev) 158 { 159 ACPI_DEVICE_INFO *devinfo; 160 ACPI_HANDLE h; 161 int root; 162 163 if (acpi_disabled("pcib") || (h = acpi_get_handle(dev)) == NULL || 164 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) 165 return (ENXIO); 166 root = (devinfo->Flags & ACPI_PCI_ROOT_BRIDGE) != 0; 167 AcpiOsFree(devinfo); 168 if (!root || pci_cfgregopen() == 0) 169 return (ENXIO); 170 171 device_set_desc(dev, "ACPI Host-PCI bridge"); 172 return (0); 173 } 174 175 #ifdef NEW_PCIB 176 static ACPI_STATUS 177 acpi_pcib_producer_handler(ACPI_RESOURCE *res, void *context) 178 { 179 struct acpi_hpcib_softc *sc; 180 UINT64 length, min, max; 181 u_int flags; 182 int error, type; 183 184 sc = context; 185 switch (res->Type) { 186 case ACPI_RESOURCE_TYPE_START_DEPENDENT: 187 case ACPI_RESOURCE_TYPE_END_DEPENDENT: 188 panic("host bridge has depenedent resources"); 189 case ACPI_RESOURCE_TYPE_ADDRESS16: 190 case ACPI_RESOURCE_TYPE_ADDRESS32: 191 case ACPI_RESOURCE_TYPE_ADDRESS64: 192 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64: 193 if (res->Data.Address.ProducerConsumer != ACPI_PRODUCER) 194 break; 195 switch (res->Type) { 196 case ACPI_RESOURCE_TYPE_ADDRESS16: 197 min = res->Data.Address16.Address.Minimum; 198 max = res->Data.Address16.Address.Maximum; 199 length = res->Data.Address16.Address.AddressLength; 200 break; 201 case ACPI_RESOURCE_TYPE_ADDRESS32: 202 min = res->Data.Address32.Address.Minimum; 203 max = res->Data.Address32.Address.Maximum; 204 length = res->Data.Address32.Address.AddressLength; 205 break; 206 case ACPI_RESOURCE_TYPE_ADDRESS64: 207 min = res->Data.Address64.Address.Minimum; 208 max = res->Data.Address64.Address.Maximum; 209 length = res->Data.Address64.Address.AddressLength; 210 break; 211 default: 212 KASSERT(res->Type == 213 ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64, 214 ("should never happen")); 215 min = res->Data.ExtAddress64.Address.Minimum; 216 max = res->Data.ExtAddress64.Address.Maximum; 217 length = res->Data.ExtAddress64.Address.AddressLength; 218 break; 219 } 220 if (length == 0) 221 break; 222 if (min + length - 1 != max && 223 (res->Data.Address.MinAddressFixed != ACPI_ADDRESS_FIXED || 224 res->Data.Address.MaxAddressFixed != ACPI_ADDRESS_FIXED)) 225 break; 226 flags = 0; 227 switch (res->Data.Address.ResourceType) { 228 case ACPI_MEMORY_RANGE: 229 type = SYS_RES_MEMORY; 230 if (res->Type != ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64) { 231 if (res->Data.Address.Info.Mem.Caching == 232 ACPI_PREFETCHABLE_MEMORY) 233 flags |= RF_PREFETCHABLE; 234 } else { 235 /* 236 * XXX: Parse prefetch flag out of 237 * TypeSpecific. 238 */ 239 } 240 break; 241 case ACPI_IO_RANGE: 242 type = SYS_RES_IOPORT; 243 break; 244 #ifdef PCI_RES_BUS 245 case ACPI_BUS_NUMBER_RANGE: 246 type = PCI_RES_BUS; 247 break; 248 #endif 249 default: 250 return (AE_OK); 251 } 252 253 if (min + length - 1 != max) 254 device_printf(sc->ap_dev, 255 "Length mismatch for %d range: %jx vs %jx\n", type, 256 (uintmax_t)(max - min + 1), (uintmax_t)length); 257 #ifdef __i386__ 258 if (min > ULONG_MAX) { 259 device_printf(sc->ap_dev, 260 "Ignoring %d range above 4GB (%#jx-%#jx)\n", 261 type, (uintmax_t)min, (uintmax_t)max); 262 break; 263 } 264 if (max > ULONG_MAX) { 265 device_printf(sc->ap_dev, 266 "Truncating end of %d range above 4GB (%#jx-%#jx)\n", 267 type, (uintmax_t)min, (uintmax_t)max); 268 max = ULONG_MAX; 269 } 270 #endif 271 error = pcib_host_res_decodes(&sc->ap_host_res, type, min, max, 272 flags); 273 if (error) 274 panic("Failed to manage %d range (%#jx-%#jx): %d", 275 type, (uintmax_t)min, (uintmax_t)max, error); 276 break; 277 default: 278 break; 279 } 280 return (AE_OK); 281 } 282 #endif 283 284 #if defined(NEW_PCIB) && defined(PCI_RES_BUS) 285 static int 286 first_decoded_bus(struct acpi_hpcib_softc *sc, u_long *startp) 287 { 288 struct resource_list_entry *rle; 289 290 rle = resource_list_find(&sc->ap_host_res.hr_rl, PCI_RES_BUS, 0); 291 if (rle == NULL) 292 return (ENXIO); 293 *startp = rle->start; 294 return (0); 295 } 296 #endif 297 298 static void 299 acpi_pcib_osc(struct acpi_hpcib_softc *sc) 300 { 301 ACPI_STATUS status; 302 uint32_t cap_set[3]; 303 304 static uint8_t pci_host_bridge_uuid[ACPI_UUID_LENGTH] = { 305 0x5b, 0x4d, 0xdb, 0x33, 0xf7, 0x1f, 0x1c, 0x40, 306 0x96, 0x57, 0x74, 0x41, 0xc0, 0x3d, 0xd7, 0x66 307 }; 308 309 /* Support Field: Extended PCI Config Space, MSI */ 310 cap_set[1] = 0x11; 311 312 /* Control Field */ 313 cap_set[2] = 0; 314 315 status = acpi_EvaluateOSC(sc->ap_handle, pci_host_bridge_uuid, 1, 316 nitems(cap_set), cap_set, cap_set, false); 317 if (ACPI_FAILURE(status)) { 318 if (status == AE_NOT_FOUND) 319 return; 320 device_printf(sc->ap_dev, "_OSC failed: %s\n", 321 AcpiFormatException(status)); 322 return; 323 } 324 325 if (cap_set[0] != 0) { 326 device_printf(sc->ap_dev, "_OSC returned error %#x\n", 327 cap_set[0]); 328 } 329 } 330 331 static int 332 acpi_pcib_acpi_attach(device_t dev) 333 { 334 struct acpi_hpcib_softc *sc; 335 ACPI_STATUS status; 336 static int bus0_seen = 0; 337 u_int slot, func, busok; 338 #if defined(NEW_PCIB) && defined(PCI_RES_BUS) 339 struct resource *bus_res; 340 u_long start; 341 int rid; 342 #endif 343 uint8_t busno; 344 345 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 346 347 sc = device_get_softc(dev); 348 sc->ap_dev = dev; 349 sc->ap_handle = acpi_get_handle(dev); 350 351 /* 352 * Don't attach if we're not really there. 353 */ 354 if (!acpi_DeviceIsPresent(dev)) 355 return (ENXIO); 356 357 acpi_pcib_osc(sc); 358 359 /* 360 * Get our segment number by evaluating _SEG. 361 * It's OK for this to not exist. 362 */ 363 status = acpi_GetInteger(sc->ap_handle, "_SEG", &sc->ap_segment); 364 if (ACPI_FAILURE(status)) { 365 if (status != AE_NOT_FOUND) { 366 device_printf(dev, "could not evaluate _SEG - %s\n", 367 AcpiFormatException(status)); 368 return_VALUE (ENXIO); 369 } 370 /* If it's not found, assume 0. */ 371 sc->ap_segment = 0; 372 } 373 374 /* 375 * Get the address (device and function) of the associated 376 * PCI-Host bridge device from _ADR. Assume we don't have one if 377 * it doesn't exist. 378 */ 379 status = acpi_GetInteger(sc->ap_handle, "_ADR", &sc->ap_addr); 380 if (ACPI_FAILURE(status)) { 381 device_printf(dev, "could not evaluate _ADR - %s\n", 382 AcpiFormatException(status)); 383 sc->ap_addr = -1; 384 } 385 386 #ifdef NEW_PCIB 387 /* 388 * Determine which address ranges this bridge decodes and setup 389 * resource managers for those ranges. 390 */ 391 if (pcib_host_res_init(sc->ap_dev, &sc->ap_host_res) != 0) 392 panic("failed to init hostb resources"); 393 if (!acpi_disabled("hostres")) { 394 status = AcpiWalkResources(sc->ap_handle, "_CRS", 395 acpi_pcib_producer_handler, sc); 396 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) 397 device_printf(sc->ap_dev, "failed to parse resources: %s\n", 398 AcpiFormatException(status)); 399 } 400 #endif 401 402 /* 403 * Get our base bus number by evaluating _BBN. 404 * If this doesn't work, we assume we're bus number 0. 405 * 406 * XXX note that it may also not exist in the case where we are 407 * meant to use a private configuration space mechanism for this bus, 408 * so we should dig out our resources and check to see if we have 409 * anything like that. How do we do this? 410 * XXX If we have the requisite information, and if we don't think the 411 * default PCI configuration space handlers can deal with this bus, 412 * we should attach our own handler. 413 * XXX invoke _REG on this for the PCI config space address space? 414 * XXX It seems many BIOS's with multiple Host-PCI bridges do not set 415 * _BBN correctly. They set _BBN to zero for all bridges. Thus, 416 * if _BBN is zero and PCI bus 0 already exists, we try to read our 417 * bus number from the configuration registers at address _ADR. 418 * We only do this for domain/segment 0 in the hopes that this is 419 * only needed for old single-domain machines. 420 */ 421 status = acpi_GetInteger(sc->ap_handle, "_BBN", &sc->ap_bus); 422 if (ACPI_FAILURE(status)) { 423 if (status != AE_NOT_FOUND) { 424 device_printf(dev, "could not evaluate _BBN - %s\n", 425 AcpiFormatException(status)); 426 return (ENXIO); 427 } else { 428 /* If it's not found, assume 0. */ 429 sc->ap_bus = 0; 430 } 431 } 432 433 /* 434 * If this is segment 0, the bus is zero, and PCI bus 0 already 435 * exists, read the bus number via PCI config space. 436 */ 437 busok = 1; 438 if (sc->ap_segment == 0 && sc->ap_bus == 0 && bus0_seen) { 439 busok = 0; 440 if (sc->ap_addr != -1) { 441 /* XXX: We assume bus 0. */ 442 slot = ACPI_ADR_PCI_SLOT(sc->ap_addr); 443 func = ACPI_ADR_PCI_FUNC(sc->ap_addr); 444 if (bootverbose) 445 device_printf(dev, "reading config registers from 0:%d:%d\n", 446 slot, func); 447 if (host_pcib_get_busno(pci_cfgregread, 0, slot, func, &busno) == 0) 448 device_printf(dev, "couldn't read bus number from cfg space\n"); 449 else { 450 sc->ap_bus = busno; 451 busok = 1; 452 } 453 } 454 } 455 456 #if defined(NEW_PCIB) && defined(PCI_RES_BUS) 457 /* 458 * If nothing else worked, hope that ACPI at least lays out the 459 * Host-PCI bridges in order and that as a result the next free 460 * bus number is our bus number. 461 */ 462 if (busok == 0) { 463 /* 464 * If we have a region of bus numbers, use the first 465 * number for our bus. 466 */ 467 if (first_decoded_bus(sc, &start) == 0) 468 sc->ap_bus = start; 469 else { 470 rid = 0; 471 bus_res = pci_domain_alloc_bus(sc->ap_segment, dev, &rid, 0, 472 PCI_BUSMAX, 1, 0); 473 if (bus_res == NULL) { 474 device_printf(dev, 475 "could not allocate bus number\n"); 476 pcib_host_res_free(dev, &sc->ap_host_res); 477 return (ENXIO); 478 } 479 sc->ap_bus = rman_get_start(bus_res); 480 pci_domain_release_bus(sc->ap_segment, dev, rid, bus_res); 481 } 482 } else { 483 /* 484 * Require the bus number from _BBN to match the start of any 485 * decoded range. 486 */ 487 if (first_decoded_bus(sc, &start) == 0 && sc->ap_bus != start) { 488 device_printf(dev, 489 "bus number %d does not match start of decoded range %ju\n", 490 sc->ap_bus, (uintmax_t)start); 491 pcib_host_res_free(dev, &sc->ap_host_res); 492 return (ENXIO); 493 } 494 } 495 #else 496 /* 497 * If nothing else worked, hope that ACPI at least lays out the 498 * host-PCI bridges in order and that as a result our unit number 499 * is actually our bus number. There are several reasons this 500 * might not be true. 501 */ 502 if (busok == 0) { 503 sc->ap_bus = device_get_unit(dev); 504 device_printf(dev, "trying bus number %d\n", sc->ap_bus); 505 } 506 #endif 507 508 /* If this is bus 0 on segment 0, note that it has been seen already. */ 509 if (sc->ap_segment == 0 && sc->ap_bus == 0) 510 bus0_seen = 1; 511 512 bus_generic_probe(dev); 513 return (acpi_pcib_attach(dev, &sc->ap_prt, sc->ap_bus)); 514 } 515 516 /* 517 * Support for standard PCI bridge ivars. 518 */ 519 static int 520 acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 521 { 522 struct acpi_hpcib_softc *sc = device_get_softc(dev); 523 524 switch (which) { 525 case PCIB_IVAR_DOMAIN: 526 *result = sc->ap_segment; 527 return (0); 528 case PCIB_IVAR_BUS: 529 *result = sc->ap_bus; 530 return (0); 531 case ACPI_IVAR_HANDLE: 532 *result = (uintptr_t)sc->ap_handle; 533 return (0); 534 case ACPI_IVAR_FLAGS: 535 *result = (uintptr_t)sc->ap_flags; 536 return (0); 537 } 538 return (ENOENT); 539 } 540 541 static int 542 acpi_pcib_write_ivar(device_t dev, device_t child, int which, uintptr_t value) 543 { 544 struct acpi_hpcib_softc *sc = device_get_softc(dev); 545 546 switch (which) { 547 case PCIB_IVAR_DOMAIN: 548 return (EINVAL); 549 case PCIB_IVAR_BUS: 550 sc->ap_bus = value; 551 return (0); 552 case ACPI_IVAR_HANDLE: 553 sc->ap_handle = (ACPI_HANDLE)value; 554 return (0); 555 case ACPI_IVAR_FLAGS: 556 sc->ap_flags = (int)value; 557 return (0); 558 } 559 return (ENOENT); 560 } 561 562 static uint32_t 563 acpi_pcib_read_config(device_t dev, u_int bus, u_int slot, u_int func, 564 u_int reg, int bytes) 565 { 566 return (pci_cfgregread(bus, slot, func, reg, bytes)); 567 } 568 569 static void 570 acpi_pcib_write_config(device_t dev, u_int bus, u_int slot, u_int func, 571 u_int reg, uint32_t data, int bytes) 572 { 573 pci_cfgregwrite(bus, slot, func, reg, data, bytes); 574 } 575 576 static int 577 acpi_pcib_acpi_route_interrupt(device_t pcib, device_t dev, int pin) 578 { 579 struct acpi_hpcib_softc *sc = device_get_softc(pcib); 580 581 return (acpi_pcib_route_interrupt(pcib, dev, pin, &sc->ap_prt)); 582 } 583 584 static int 585 acpi_pcib_alloc_msi(device_t pcib, device_t dev, int count, int maxcount, 586 int *irqs) 587 { 588 device_t bus; 589 590 bus = device_get_parent(pcib); 591 return (PCIB_ALLOC_MSI(device_get_parent(bus), dev, count, maxcount, 592 irqs)); 593 } 594 595 static int 596 acpi_pcib_alloc_msix(device_t pcib, device_t dev, int *irq) 597 { 598 device_t bus; 599 600 bus = device_get_parent(pcib); 601 return (PCIB_ALLOC_MSIX(device_get_parent(bus), dev, irq)); 602 } 603 604 static int 605 acpi_pcib_map_msi(device_t pcib, device_t dev, int irq, uint64_t *addr, 606 uint32_t *data) 607 { 608 struct acpi_hpcib_softc *sc; 609 device_t bus, hostb; 610 int error; 611 612 bus = device_get_parent(pcib); 613 error = PCIB_MAP_MSI(device_get_parent(bus), dev, irq, addr, data); 614 if (error) 615 return (error); 616 617 sc = device_get_softc(pcib); 618 if (sc->ap_addr == -1) 619 return (0); 620 /* XXX: Assumes all bridges are on bus 0. */ 621 hostb = pci_find_dbsf(sc->ap_segment, 0, ACPI_ADR_PCI_SLOT(sc->ap_addr), 622 ACPI_ADR_PCI_FUNC(sc->ap_addr)); 623 if (hostb != NULL) 624 pci_ht_map_msi(hostb, *addr); 625 return (0); 626 } 627 628 struct resource * 629 acpi_pcib_acpi_alloc_resource(device_t dev, device_t child, int type, int *rid, 630 u_long start, u_long end, u_long count, u_int flags) 631 { 632 #ifdef NEW_PCIB 633 struct acpi_hpcib_softc *sc; 634 struct resource *res; 635 #endif 636 637 #if defined(__i386__) || defined(__amd64__) 638 start = hostb_alloc_start(type, start, end, count); 639 #endif 640 641 #ifdef NEW_PCIB 642 sc = device_get_softc(dev); 643 #ifdef PCI_RES_BUS 644 if (type == PCI_RES_BUS) 645 return (pci_domain_alloc_bus(sc->ap_segment, child, rid, start, end, 646 count, flags)); 647 #endif 648 res = pcib_host_res_alloc(&sc->ap_host_res, child, type, rid, start, end, 649 count, flags); 650 651 /* 652 * XXX: If this is a request for a specific range, assume it is 653 * correct and pass it up to the parent. What we probably want to 654 * do long-term is explicitly trust any firmware-configured 655 * resources during the initial bus scan on boot and then disable 656 * this after that. 657 */ 658 if (res == NULL && start + count - 1 == end) 659 res = bus_generic_alloc_resource(dev, child, type, rid, start, end, 660 count, flags); 661 return (res); 662 #else 663 return (bus_generic_alloc_resource(dev, child, type, rid, start, end, 664 count, flags)); 665 #endif 666 } 667 668 #ifdef NEW_PCIB 669 int 670 acpi_pcib_acpi_adjust_resource(device_t dev, device_t child, int type, 671 struct resource *r, u_long start, u_long end) 672 { 673 struct acpi_hpcib_softc *sc; 674 675 sc = device_get_softc(dev); 676 #ifdef PCI_RES_BUS 677 if (type == PCI_RES_BUS) 678 return (pci_domain_adjust_bus(sc->ap_segment, child, r, start, 679 end)); 680 #endif 681 return (pcib_host_res_adjust(&sc->ap_host_res, child, type, r, start, 682 end)); 683 } 684 685 #ifdef PCI_RES_BUS 686 int 687 acpi_pcib_acpi_release_resource(device_t dev, device_t child, int type, int rid, 688 struct resource *r) 689 { 690 struct acpi_hpcib_softc *sc; 691 692 sc = device_get_softc(dev); 693 if (type == PCI_RES_BUS) 694 return (pci_domain_release_bus(sc->ap_segment, child, rid, r)); 695 return (bus_generic_release_resource(dev, child, type, rid, r)); 696 } 697 #endif 698 #endif
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