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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: releng/12.0/sys/dev/acpica/acpi_pcib_acpi.c 327901 2018-01-12 23:34:16Z jeff $"); 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, MSI */ 327 cap_set[PCI_OSC_SUPPORT] = PCIM_OSC_SUPPORT_EXT_PCI_CONF | 328 PCIM_OSC_SUPPORT_MSI; 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 device_printf(dev, "could not evaluate _ADR - %s\n", 412 AcpiFormatException(status)); 413 sc->ap_addr = -1; 414 } 415 416 #ifdef NEW_PCIB 417 /* 418 * Determine which address ranges this bridge decodes and setup 419 * resource managers for those ranges. 420 */ 421 if (pcib_host_res_init(sc->ap_dev, &sc->ap_host_res) != 0) 422 panic("failed to init hostb resources"); 423 if (!acpi_disabled("hostres")) { 424 status = AcpiWalkResources(sc->ap_handle, "_CRS", 425 acpi_pcib_producer_handler, sc); 426 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) 427 device_printf(sc->ap_dev, "failed to parse resources: %s\n", 428 AcpiFormatException(status)); 429 } 430 #endif 431 432 /* 433 * Get our base bus number by evaluating _BBN. 434 * If this doesn't work, we assume we're bus number 0. 435 * 436 * XXX note that it may also not exist in the case where we are 437 * meant to use a private configuration space mechanism for this bus, 438 * so we should dig out our resources and check to see if we have 439 * anything like that. How do we do this? 440 * XXX If we have the requisite information, and if we don't think the 441 * default PCI configuration space handlers can deal with this bus, 442 * we should attach our own handler. 443 * XXX invoke _REG on this for the PCI config space address space? 444 * XXX It seems many BIOS's with multiple Host-PCI bridges do not set 445 * _BBN correctly. They set _BBN to zero for all bridges. Thus, 446 * if _BBN is zero and PCI bus 0 already exists, we try to read our 447 * bus number from the configuration registers at address _ADR. 448 * We only do this for domain/segment 0 in the hopes that this is 449 * only needed for old single-domain machines. 450 */ 451 status = acpi_GetInteger(sc->ap_handle, "_BBN", &sc->ap_bus); 452 if (ACPI_FAILURE(status)) { 453 if (status != AE_NOT_FOUND) { 454 device_printf(dev, "could not evaluate _BBN - %s\n", 455 AcpiFormatException(status)); 456 return (ENXIO); 457 } else { 458 /* If it's not found, assume 0. */ 459 sc->ap_bus = 0; 460 } 461 } 462 463 /* 464 * If this is segment 0, the bus is zero, and PCI bus 0 already 465 * exists, read the bus number via PCI config space. 466 */ 467 busok = 1; 468 if (sc->ap_segment == 0 && sc->ap_bus == 0 && bus0_seen) { 469 busok = 0; 470 if (sc->ap_addr != -1) { 471 /* XXX: We assume bus 0. */ 472 slot = ACPI_ADR_PCI_SLOT(sc->ap_addr); 473 func = ACPI_ADR_PCI_FUNC(sc->ap_addr); 474 if (bootverbose) 475 device_printf(dev, "reading config registers from 0:%d:%d\n", 476 slot, func); 477 if (host_pcib_get_busno(pci_cfgregread, 0, slot, func, &busno) == 0) 478 device_printf(dev, "couldn't read bus number from cfg space\n"); 479 else { 480 sc->ap_bus = busno; 481 busok = 1; 482 } 483 } 484 } 485 486 #if defined(NEW_PCIB) && defined(PCI_RES_BUS) 487 /* 488 * If nothing else worked, hope that ACPI at least lays out the 489 * Host-PCI bridges in order and that as a result the next free 490 * bus number is our bus number. 491 */ 492 if (busok == 0) { 493 /* 494 * If we have a region of bus numbers, use the first 495 * number for our bus. 496 */ 497 if (first_decoded_bus(sc, &start) == 0) 498 sc->ap_bus = start; 499 else { 500 rid = 0; 501 bus_res = pci_domain_alloc_bus(sc->ap_segment, dev, &rid, 0, 502 PCI_BUSMAX, 1, 0); 503 if (bus_res == NULL) { 504 device_printf(dev, 505 "could not allocate bus number\n"); 506 pcib_host_res_free(dev, &sc->ap_host_res); 507 return (ENXIO); 508 } 509 sc->ap_bus = rman_get_start(bus_res); 510 pci_domain_release_bus(sc->ap_segment, dev, rid, bus_res); 511 } 512 } else { 513 /* 514 * Require the bus number from _BBN to match the start of any 515 * decoded range. 516 */ 517 if (first_decoded_bus(sc, &start) == 0 && sc->ap_bus != start) { 518 device_printf(dev, 519 "bus number %d does not match start of decoded range %ju\n", 520 sc->ap_bus, (uintmax_t)start); 521 pcib_host_res_free(dev, &sc->ap_host_res); 522 return (ENXIO); 523 } 524 } 525 #else 526 /* 527 * If nothing else worked, hope that ACPI at least lays out the 528 * host-PCI bridges in order and that as a result our unit number 529 * is actually our bus number. There are several reasons this 530 * might not be true. 531 */ 532 if (busok == 0) { 533 sc->ap_bus = device_get_unit(dev); 534 device_printf(dev, "trying bus number %d\n", sc->ap_bus); 535 } 536 #endif 537 538 /* If this is bus 0 on segment 0, note that it has been seen already. */ 539 if (sc->ap_segment == 0 && sc->ap_bus == 0) 540 bus0_seen = 1; 541 542 acpi_pcib_fetch_prt(dev, &sc->ap_prt); 543 544 error = bus_dma_tag_create(bus_get_dma_tag(dev), 1, 545 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, 546 NULL, NULL, BUS_SPACE_MAXSIZE, BUS_SPACE_UNRESTRICTED, 547 BUS_SPACE_MAXSIZE, 0, NULL, NULL, &sc->ap_dma_tag); 548 if (error != 0) 549 goto errout; 550 error = bus_get_domain(dev, &domain); 551 if (error == 0) 552 error = bus_dma_tag_set_domain(sc->ap_dma_tag, domain); 553 /* Don't fail to attach if the domain can't be queried or set. */ 554 error = 0; 555 556 bus_generic_probe(dev); 557 if (device_add_child(dev, "pci", -1) == NULL) { 558 bus_dma_tag_destroy(sc->ap_dma_tag); 559 sc->ap_dma_tag = NULL; 560 error = ENXIO; 561 goto errout; 562 } 563 return (bus_generic_attach(dev)); 564 565 errout: 566 device_printf(device_get_parent(dev), "couldn't attach pci bus\n"); 567 #if defined(NEW_PCIB) && defined(PCI_RES_BUS) 568 pcib_host_res_free(dev, &sc->ap_host_res); 569 #endif 570 return (error); 571 } 572 573 /* 574 * Support for standard PCI bridge ivars. 575 */ 576 static int 577 acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 578 { 579 struct acpi_hpcib_softc *sc = device_get_softc(dev); 580 581 switch (which) { 582 case PCIB_IVAR_DOMAIN: 583 *result = sc->ap_segment; 584 return (0); 585 case PCIB_IVAR_BUS: 586 *result = sc->ap_bus; 587 return (0); 588 case ACPI_IVAR_HANDLE: 589 *result = (uintptr_t)sc->ap_handle; 590 return (0); 591 case ACPI_IVAR_FLAGS: 592 *result = (uintptr_t)sc->ap_flags; 593 return (0); 594 } 595 return (ENOENT); 596 } 597 598 static int 599 acpi_pcib_write_ivar(device_t dev, device_t child, int which, uintptr_t value) 600 { 601 struct acpi_hpcib_softc *sc = device_get_softc(dev); 602 603 switch (which) { 604 case PCIB_IVAR_DOMAIN: 605 return (EINVAL); 606 case PCIB_IVAR_BUS: 607 sc->ap_bus = value; 608 return (0); 609 case ACPI_IVAR_HANDLE: 610 sc->ap_handle = (ACPI_HANDLE)value; 611 return (0); 612 case ACPI_IVAR_FLAGS: 613 sc->ap_flags = (int)value; 614 return (0); 615 } 616 return (ENOENT); 617 } 618 619 static uint32_t 620 acpi_pcib_read_config(device_t dev, u_int bus, u_int slot, u_int func, 621 u_int reg, int bytes) 622 { 623 return (pci_cfgregread(bus, slot, func, reg, bytes)); 624 } 625 626 static void 627 acpi_pcib_write_config(device_t dev, u_int bus, u_int slot, u_int func, 628 u_int reg, uint32_t data, int bytes) 629 { 630 pci_cfgregwrite(bus, slot, func, reg, data, bytes); 631 } 632 633 static int 634 acpi_pcib_acpi_route_interrupt(device_t pcib, device_t dev, int pin) 635 { 636 struct acpi_hpcib_softc *sc = device_get_softc(pcib); 637 638 return (acpi_pcib_route_interrupt(pcib, dev, pin, &sc->ap_prt)); 639 } 640 641 static int 642 acpi_pcib_alloc_msi(device_t pcib, device_t dev, int count, int maxcount, 643 int *irqs) 644 { 645 device_t bus; 646 647 bus = device_get_parent(pcib); 648 return (PCIB_ALLOC_MSI(device_get_parent(bus), dev, count, maxcount, 649 irqs)); 650 } 651 652 static int 653 acpi_pcib_alloc_msix(device_t pcib, device_t dev, int *irq) 654 { 655 device_t bus; 656 657 bus = device_get_parent(pcib); 658 return (PCIB_ALLOC_MSIX(device_get_parent(bus), dev, irq)); 659 } 660 661 static int 662 acpi_pcib_map_msi(device_t pcib, device_t dev, int irq, uint64_t *addr, 663 uint32_t *data) 664 { 665 struct acpi_hpcib_softc *sc; 666 device_t bus, hostb; 667 int error; 668 669 bus = device_get_parent(pcib); 670 error = PCIB_MAP_MSI(device_get_parent(bus), dev, irq, addr, data); 671 if (error) 672 return (error); 673 674 sc = device_get_softc(pcib); 675 if (sc->ap_addr == -1) 676 return (0); 677 /* XXX: Assumes all bridges are on bus 0. */ 678 hostb = pci_find_dbsf(sc->ap_segment, 0, ACPI_ADR_PCI_SLOT(sc->ap_addr), 679 ACPI_ADR_PCI_FUNC(sc->ap_addr)); 680 if (hostb != NULL) 681 pci_ht_map_msi(hostb, *addr); 682 return (0); 683 } 684 685 struct resource * 686 acpi_pcib_acpi_alloc_resource(device_t dev, device_t child, int type, int *rid, 687 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) 688 { 689 #ifdef NEW_PCIB 690 struct acpi_hpcib_softc *sc; 691 struct resource *res; 692 #endif 693 694 #if defined(__i386__) || defined(__amd64__) 695 start = hostb_alloc_start(type, start, end, count); 696 #endif 697 698 #ifdef NEW_PCIB 699 sc = device_get_softc(dev); 700 #ifdef PCI_RES_BUS 701 if (type == PCI_RES_BUS) 702 return (pci_domain_alloc_bus(sc->ap_segment, child, rid, start, end, 703 count, flags)); 704 #endif 705 res = pcib_host_res_alloc(&sc->ap_host_res, child, type, rid, start, end, 706 count, flags); 707 708 /* 709 * XXX: If this is a request for a specific range, assume it is 710 * correct and pass it up to the parent. What we probably want to 711 * do long-term is explicitly trust any firmware-configured 712 * resources during the initial bus scan on boot and then disable 713 * this after that. 714 */ 715 if (res == NULL && start + count - 1 == end) 716 res = bus_generic_alloc_resource(dev, child, type, rid, start, end, 717 count, flags); 718 return (res); 719 #else 720 return (bus_generic_alloc_resource(dev, child, type, rid, start, end, 721 count, flags)); 722 #endif 723 } 724 725 #ifdef NEW_PCIB 726 int 727 acpi_pcib_acpi_adjust_resource(device_t dev, device_t child, int type, 728 struct resource *r, rman_res_t start, rman_res_t end) 729 { 730 struct acpi_hpcib_softc *sc; 731 732 sc = device_get_softc(dev); 733 #ifdef PCI_RES_BUS 734 if (type == PCI_RES_BUS) 735 return (pci_domain_adjust_bus(sc->ap_segment, child, r, start, 736 end)); 737 #endif 738 return (pcib_host_res_adjust(&sc->ap_host_res, child, type, r, start, 739 end)); 740 } 741 742 #ifdef PCI_RES_BUS 743 int 744 acpi_pcib_acpi_release_resource(device_t dev, device_t child, int type, int rid, 745 struct resource *r) 746 { 747 struct acpi_hpcib_softc *sc; 748 749 sc = device_get_softc(dev); 750 if (type == PCI_RES_BUS) 751 return (pci_domain_release_bus(sc->ap_segment, child, rid, r)); 752 return (bus_generic_release_resource(dev, child, type, rid, r)); 753 } 754 #endif 755 #endif 756 757 static int 758 acpi_pcib_request_feature(device_t pcib, device_t dev, enum pci_feature feature) 759 { 760 uint32_t osc_ctl; 761 struct acpi_hpcib_softc *sc; 762 763 sc = device_get_softc(pcib); 764 765 switch (feature) { 766 case PCI_FEATURE_HP: 767 osc_ctl = PCIM_OSC_CTL_PCIE_HP; 768 break; 769 case PCI_FEATURE_AER: 770 osc_ctl = PCIM_OSC_CTL_PCIE_AER; 771 break; 772 default: 773 return (EINVAL); 774 } 775 776 return (acpi_pcib_osc(sc, osc_ctl)); 777 } 778 779 static bus_dma_tag_t 780 acpi_pcib_get_dma_tag(device_t bus, device_t child) 781 { 782 struct acpi_hpcib_softc *sc; 783 784 sc = device_get_softc(bus); 785 786 return (sc->ap_dma_tag); 787 }
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