Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/ofw/ofw_pcib.c
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1 /*- 2 * Copyright (c) 2011 Nathan Whitehorn 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 #include <sys/param.h> 30 #include <sys/systm.h> 31 #include <sys/module.h> 32 #include <sys/bus.h> 33 #include <sys/conf.h> 34 #include <sys/kernel.h> 35 #include <sys/rman.h> 36 37 #include <dev/ofw/openfirm.h> 38 #include <dev/ofw/ofw_pci.h> 39 #include <dev/ofw/ofw_bus.h> 40 #include <dev/ofw/ofw_bus_subr.h> 41 #include <dev/ofw/ofwpci.h> 42 43 #include <dev/pci/pcivar.h> 44 #include <dev/pci/pcireg.h> 45 #include <dev/pci/pcib_private.h> 46 47 #include <machine/bus.h> 48 #include <machine/md_var.h> 49 #include <machine/resource.h> 50 51 #include <vm/vm.h> 52 #include <vm/pmap.h> 53 54 #include "pcib_if.h" 55 56 /* 57 * If it is necessary to set another value of this for 58 * some platforms it should be set at fdt.h file 59 */ 60 #ifndef PCI_MAP_INTR 61 #define PCI_MAP_INTR 4 62 #endif 63 64 #define PCI_INTR_PINS 4 65 66 /* 67 * bus interface. 68 */ 69 static struct resource * ofw_pcib_alloc_resource(device_t, device_t, 70 int, int *, rman_res_t, rman_res_t, rman_res_t, u_int); 71 static int ofw_pcib_release_resource(device_t, device_t, int, int, 72 struct resource *); 73 static int ofw_pcib_activate_resource(device_t, device_t, int, int, 74 struct resource *); 75 static int ofw_pcib_deactivate_resource(device_t, device_t, int, int, 76 struct resource *); 77 static int ofw_pcib_adjust_resource(device_t, device_t, int, 78 struct resource *, rman_res_t, rman_res_t); 79 static int ofw_pcib_translate_resource(device_t bus, int type, 80 rman_res_t start, rman_res_t *newstart); 81 82 #ifdef __powerpc__ 83 static bus_space_tag_t ofw_pcib_bus_get_bus_tag(device_t, device_t); 84 #endif 85 86 /* 87 * pcib interface 88 */ 89 static int ofw_pcib_maxslots(device_t); 90 91 /* 92 * ofw_bus interface 93 */ 94 static phandle_t ofw_pcib_get_node(device_t, device_t); 95 96 /* 97 * local methods 98 */ 99 static int ofw_pcib_fill_ranges(phandle_t, struct ofw_pci_range *); 100 static struct rman *ofw_pcib_get_rman(struct ofw_pci_softc *, int, u_int); 101 102 /* 103 * Driver methods. 104 */ 105 static device_method_t ofw_pcib_methods[] = { 106 /* Device interface */ 107 DEVMETHOD(device_attach, ofw_pcib_attach), 108 109 /* Bus interface */ 110 DEVMETHOD(bus_print_child, bus_generic_print_child), 111 DEVMETHOD(bus_read_ivar, ofw_pcib_read_ivar), 112 DEVMETHOD(bus_write_ivar, ofw_pcib_write_ivar), 113 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 114 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 115 DEVMETHOD(bus_alloc_resource, ofw_pcib_alloc_resource), 116 DEVMETHOD(bus_release_resource, ofw_pcib_release_resource), 117 DEVMETHOD(bus_activate_resource, ofw_pcib_activate_resource), 118 DEVMETHOD(bus_deactivate_resource, ofw_pcib_deactivate_resource), 119 DEVMETHOD(bus_adjust_resource, ofw_pcib_adjust_resource), 120 DEVMETHOD(bus_translate_resource, ofw_pcib_translate_resource), 121 #ifdef __powerpc__ 122 DEVMETHOD(bus_get_bus_tag, ofw_pcib_bus_get_bus_tag), 123 #endif 124 125 /* pcib interface */ 126 DEVMETHOD(pcib_maxslots, ofw_pcib_maxslots), 127 DEVMETHOD(pcib_route_interrupt, ofw_pcib_route_interrupt), 128 DEVMETHOD(pcib_request_feature, pcib_request_feature_allow), 129 130 /* ofw_bus interface */ 131 DEVMETHOD(ofw_bus_get_node, ofw_pcib_get_node), 132 133 DEVMETHOD_END 134 }; 135 136 DEFINE_CLASS_0(ofw_pcib, ofw_pcib_driver, ofw_pcib_methods, 0); 137 138 int 139 ofw_pcib_init(device_t dev) 140 { 141 struct ofw_pci_softc *sc; 142 phandle_t node; 143 u_int32_t busrange[2]; 144 struct ofw_pci_range *rp; 145 int i, error; 146 struct ofw_pci_cell_info *cell_info; 147 148 node = ofw_bus_get_node(dev); 149 sc = device_get_softc(dev); 150 sc->sc_initialized = 1; 151 sc->sc_range = NULL; 152 sc->sc_pci_domain = device_get_unit(dev); 153 154 cell_info = (struct ofw_pci_cell_info *)malloc(sizeof(*cell_info), 155 M_DEVBUF, M_WAITOK | M_ZERO); 156 157 sc->sc_cell_info = cell_info; 158 159 if (OF_getencprop(node, "bus-range", busrange, sizeof(busrange)) != 8) 160 busrange[0] = 0; 161 162 sc->sc_dev = dev; 163 sc->sc_node = node; 164 sc->sc_bus = busrange[0]; 165 166 if (sc->sc_quirks & OFW_PCI_QUIRK_RANGES_ON_CHILDREN) { 167 phandle_t c; 168 int n, i; 169 170 sc->sc_nrange = 0; 171 for (c = OF_child(node); c != 0; c = OF_peer(c)) { 172 n = ofw_pcib_nranges(c, cell_info); 173 if (n > 0) 174 sc->sc_nrange += n; 175 } 176 if (sc->sc_nrange == 0) { 177 error = ENXIO; 178 goto out; 179 } 180 sc->sc_range = malloc(sc->sc_nrange * sizeof(sc->sc_range[0]), 181 M_DEVBUF, M_WAITOK); 182 i = 0; 183 for (c = OF_child(node); c != 0; c = OF_peer(c)) { 184 n = ofw_pcib_fill_ranges(c, &sc->sc_range[i]); 185 if (n > 0) 186 i += n; 187 } 188 KASSERT(i == sc->sc_nrange, ("range count mismatch")); 189 } else { 190 sc->sc_nrange = ofw_pcib_nranges(node, cell_info); 191 if (sc->sc_nrange <= 0) { 192 device_printf(dev, "could not getranges\n"); 193 error = ENXIO; 194 goto out; 195 } 196 sc->sc_range = malloc(sc->sc_nrange * sizeof(sc->sc_range[0]), 197 M_DEVBUF, M_WAITOK); 198 ofw_pcib_fill_ranges(node, sc->sc_range); 199 } 200 201 sc->sc_io_rman.rm_type = RMAN_ARRAY; 202 sc->sc_io_rman.rm_descr = "PCI I/O Ports"; 203 error = rman_init(&sc->sc_io_rman); 204 if (error != 0) { 205 device_printf(dev, "rman_init() failed. error = %d\n", error); 206 goto out; 207 } 208 209 sc->sc_mem_rman.rm_type = RMAN_ARRAY; 210 sc->sc_mem_rman.rm_descr = "PCI Non Prefetchable Memory"; 211 error = rman_init(&sc->sc_mem_rman); 212 if (error != 0) { 213 device_printf(dev, "rman_init() failed. error = %d\n", error); 214 goto out_mem_rman; 215 } 216 217 sc->sc_pmem_rman.rm_type = RMAN_ARRAY; 218 sc->sc_pmem_rman.rm_descr = "PCI Prefetchable Memory"; 219 error = rman_init(&sc->sc_pmem_rman); 220 if (error != 0) { 221 device_printf(dev, "rman_init() failed. error = %d\n", error); 222 goto out_pmem_rman; 223 } 224 225 for (i = 0; i < sc->sc_nrange; i++) { 226 error = 0; 227 rp = sc->sc_range + i; 228 229 if (sc->sc_range_mask & ((uint64_t)1 << i)) 230 continue; 231 switch (rp->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) { 232 case OFW_PCI_PHYS_HI_SPACE_CONFIG: 233 break; 234 case OFW_PCI_PHYS_HI_SPACE_IO: 235 error = rman_manage_region(&sc->sc_io_rman, rp->pci, 236 rp->pci + rp->size - 1); 237 break; 238 case OFW_PCI_PHYS_HI_SPACE_MEM32: 239 case OFW_PCI_PHYS_HI_SPACE_MEM64: 240 if (rp->pci_hi & OFW_PCI_PHYS_HI_PREFETCHABLE) { 241 sc->sc_have_pmem = 1; 242 error = rman_manage_region(&sc->sc_pmem_rman, 243 rp->pci, rp->pci + rp->size - 1); 244 } else { 245 error = rman_manage_region(&sc->sc_mem_rman, 246 rp->pci, rp->pci + rp->size - 1); 247 } 248 break; 249 } 250 251 if (error != 0) { 252 device_printf(dev, 253 "rman_manage_region(%x, %#jx, %#jx) failed. " 254 "error = %d\n", rp->pci_hi & 255 OFW_PCI_PHYS_HI_SPACEMASK, rp->pci, 256 rp->pci + rp->size - 1, error); 257 goto out_full; 258 } 259 } 260 261 ofw_bus_setup_iinfo(node, &sc->sc_pci_iinfo, sizeof(cell_t)); 262 return (0); 263 264 out_full: 265 rman_fini(&sc->sc_pmem_rman); 266 out_pmem_rman: 267 rman_fini(&sc->sc_mem_rman); 268 out_mem_rman: 269 rman_fini(&sc->sc_io_rman); 270 out: 271 free(sc->sc_cell_info, M_DEVBUF); 272 free(sc->sc_range, M_DEVBUF); 273 274 return (error); 275 } 276 277 void 278 ofw_pcib_fini(device_t dev) 279 { 280 struct ofw_pci_softc *sc; 281 282 sc = device_get_softc(dev); 283 free(sc->sc_cell_info, M_DEVBUF); 284 free(sc->sc_range, M_DEVBUF); 285 rman_fini(&sc->sc_io_rman); 286 rman_fini(&sc->sc_mem_rman); 287 rman_fini(&sc->sc_pmem_rman); 288 } 289 290 int 291 ofw_pcib_attach(device_t dev) 292 { 293 struct ofw_pci_softc *sc; 294 int error; 295 296 sc = device_get_softc(dev); 297 if (!sc->sc_initialized) { 298 error = ofw_pcib_init(dev); 299 if (error != 0) 300 return (error); 301 } 302 303 device_add_child(dev, "pci", -1); 304 return (bus_generic_attach(dev)); 305 } 306 307 static int 308 ofw_pcib_maxslots(device_t dev) 309 { 310 311 return (PCI_SLOTMAX); 312 } 313 314 int 315 ofw_pcib_route_interrupt(device_t bus, device_t dev, int pin) 316 { 317 struct ofw_pci_softc *sc; 318 struct ofw_pci_register reg; 319 uint32_t pintr, mintr[PCI_MAP_INTR]; 320 int intrcells; 321 phandle_t iparent; 322 323 sc = device_get_softc(bus); 324 pintr = pin; 325 326 /* Fabricate imap information in case this isn't an OFW device */ 327 bzero(®, sizeof(reg)); 328 reg.phys_hi = (pci_get_bus(dev) << OFW_PCI_PHYS_HI_BUSSHIFT) | 329 (pci_get_slot(dev) << OFW_PCI_PHYS_HI_DEVICESHIFT) | 330 (pci_get_function(dev) << OFW_PCI_PHYS_HI_FUNCTIONSHIFT); 331 332 intrcells = ofw_bus_lookup_imap(ofw_bus_get_node(dev), 333 &sc->sc_pci_iinfo, ®, sizeof(reg), &pintr, sizeof(pintr), 334 mintr, sizeof(mintr), &iparent); 335 if (intrcells != 0) { 336 pintr = ofw_bus_map_intr(dev, iparent, intrcells, mintr); 337 return (pintr); 338 } 339 340 /* 341 * Maybe it's a real interrupt, not an intpin 342 */ 343 if (pin > PCI_INTR_PINS) 344 return (pin); 345 346 device_printf(bus, "could not route pin %d for device %d.%d\n", 347 pin, pci_get_slot(dev), pci_get_function(dev)); 348 return (PCI_INVALID_IRQ); 349 } 350 351 int 352 ofw_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 353 { 354 struct ofw_pci_softc *sc; 355 356 sc = device_get_softc(dev); 357 358 switch (which) { 359 case PCIB_IVAR_DOMAIN: 360 *result = sc->sc_pci_domain; 361 return (0); 362 case PCIB_IVAR_BUS: 363 *result = sc->sc_bus; 364 return (0); 365 default: 366 break; 367 } 368 369 return (ENOENT); 370 } 371 372 int 373 ofw_pcib_write_ivar(device_t dev, device_t child, int which, uintptr_t value) 374 { 375 struct ofw_pci_softc *sc; 376 377 sc = device_get_softc(dev); 378 379 switch (which) { 380 case PCIB_IVAR_BUS: 381 sc->sc_bus = value; 382 return (0); 383 default: 384 break; 385 } 386 387 return (ENOENT); 388 } 389 390 int 391 ofw_pcib_nranges(phandle_t node, struct ofw_pci_cell_info *info) 392 { 393 ssize_t nbase_ranges; 394 395 if (info == NULL) 396 return (-1); 397 398 info->host_address_cells = 1; 399 info->size_cells = 2; 400 info->pci_address_cell = 3; 401 402 OF_getencprop(OF_parent(node), "#address-cells", 403 &(info->host_address_cells), sizeof(info->host_address_cells)); 404 OF_getencprop(node, "#address-cells", 405 &(info->pci_address_cell), sizeof(info->pci_address_cell)); 406 OF_getencprop(node, "#size-cells", &(info->size_cells), 407 sizeof(info->size_cells)); 408 409 nbase_ranges = OF_getproplen(node, "ranges"); 410 if (nbase_ranges <= 0) 411 return (-1); 412 413 return (nbase_ranges / sizeof(cell_t) / 414 (info->pci_address_cell + info->host_address_cells + 415 info->size_cells)); 416 } 417 418 static struct resource * 419 ofw_pcib_alloc_resource(device_t bus, device_t child, int type, int *rid, 420 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) 421 { 422 struct ofw_pci_softc *sc; 423 struct resource *rv; 424 struct rman *rm; 425 int needactivate; 426 427 needactivate = flags & RF_ACTIVE; 428 flags &= ~RF_ACTIVE; 429 430 sc = device_get_softc(bus); 431 432 #if defined(NEW_PCIB) && defined(PCI_RES_BUS) 433 if (type == PCI_RES_BUS) { 434 return (pci_domain_alloc_bus(sc->sc_pci_domain, child, rid, 435 start, end, count, flags | needactivate)); 436 } 437 #endif 438 439 rm = ofw_pcib_get_rman(sc, type, flags); 440 if (rm == NULL) { 441 return (bus_generic_alloc_resource(bus, child, type, rid, 442 start, end, count, flags | needactivate)); 443 } 444 445 rv = rman_reserve_resource(rm, start, end, count, flags, child); 446 if (rv == NULL) { 447 device_printf(bus, "failed to reserve resource for %s\n", 448 device_get_nameunit(child)); 449 return (NULL); 450 } 451 452 rman_set_rid(rv, *rid); 453 454 if (needactivate) { 455 if (bus_activate_resource(child, type, *rid, rv) != 0) { 456 device_printf(bus, 457 "failed to activate resource for %s\n", 458 device_get_nameunit(child)); 459 rman_release_resource(rv); 460 return (NULL); 461 } 462 } 463 464 return (rv); 465 } 466 467 static int 468 ofw_pcib_release_resource(device_t bus, device_t child, int type, int rid, 469 struct resource *res) 470 { 471 struct ofw_pci_softc *sc; 472 struct rman *rm; 473 int error; 474 475 sc = device_get_softc(bus); 476 477 #if defined(NEW_PCIB) && defined(PCI_RES_BUS) 478 if (type == PCI_RES_BUS) 479 return (pci_domain_release_bus(sc->sc_pci_domain, child, rid, 480 res)); 481 #endif 482 483 rm = ofw_pcib_get_rman(sc, type, rman_get_flags(res)); 484 if (rm == NULL) { 485 return (bus_generic_release_resource(bus, child, type, rid, 486 res)); 487 } 488 KASSERT(rman_is_region_manager(res, rm), ("rman mismatch")); 489 490 if (rman_get_flags(res) & RF_ACTIVE) { 491 error = bus_deactivate_resource(child, type, rid, res); 492 if (error != 0) 493 return (error); 494 } 495 return (rman_release_resource(res)); 496 } 497 498 static int 499 ofw_pcib_translate_resource(device_t bus, int type, rman_res_t start, 500 rman_res_t *newstart) 501 { 502 struct ofw_pci_softc *sc; 503 struct ofw_pci_range *rp; 504 int space; 505 506 sc = device_get_softc(bus); 507 508 /* 509 * Map this through the ranges list 510 */ 511 for (rp = sc->sc_range; rp < sc->sc_range + sc->sc_nrange && 512 rp->pci_hi != 0; rp++) { 513 if (start < rp->pci || start >= rp->pci + rp->size) 514 continue; 515 516 switch (rp->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) { 517 case OFW_PCI_PHYS_HI_SPACE_IO: 518 space = SYS_RES_IOPORT; 519 break; 520 case OFW_PCI_PHYS_HI_SPACE_MEM32: 521 case OFW_PCI_PHYS_HI_SPACE_MEM64: 522 space = SYS_RES_MEMORY; 523 break; 524 default: 525 space = -1; 526 } 527 528 if (type == space) { 529 start += (rp->host - rp->pci); 530 *newstart = start; 531 return (0); 532 } 533 } 534 return (ENOENT); 535 } 536 537 static int 538 ofw_pcib_activate_resource(device_t bus, device_t child, int type, int rid, 539 struct resource *res) 540 { 541 struct ofw_pci_softc *sc; 542 bus_space_handle_t handle; 543 bus_space_tag_t tag; 544 struct ofw_pci_range *rp; 545 vm_paddr_t start; 546 int space; 547 int rv; 548 549 sc = device_get_softc(bus); 550 551 if (type != SYS_RES_IOPORT && type != SYS_RES_MEMORY) { 552 return (bus_generic_activate_resource(bus, child, type, rid, 553 res)); 554 } 555 556 start = (vm_paddr_t)rman_get_start(res); 557 558 /* 559 * Map this through the ranges list 560 */ 561 for (rp = sc->sc_range; rp < sc->sc_range + sc->sc_nrange && 562 rp->pci_hi != 0; rp++) { 563 if (start < rp->pci || start >= rp->pci + rp->size) 564 continue; 565 566 switch (rp->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) { 567 case OFW_PCI_PHYS_HI_SPACE_IO: 568 space = SYS_RES_IOPORT; 569 break; 570 case OFW_PCI_PHYS_HI_SPACE_MEM32: 571 case OFW_PCI_PHYS_HI_SPACE_MEM64: 572 space = SYS_RES_MEMORY; 573 break; 574 default: 575 space = -1; 576 } 577 578 if (type == space) { 579 start += (rp->host - rp->pci); 580 break; 581 } 582 } 583 584 if (bootverbose) 585 printf("ofw_pci mapdev: start %jx, len %jd\n", 586 (rman_res_t)start, rman_get_size(res)); 587 588 tag = BUS_GET_BUS_TAG(child, child); 589 if (tag == NULL) 590 return (ENOMEM); 591 592 rman_set_bustag(res, tag); 593 rv = bus_space_map(tag, start, 594 rman_get_size(res), 0, &handle); 595 if (rv != 0) 596 return (ENOMEM); 597 598 rman_set_bushandle(res, handle); 599 rman_set_virtual(res, (void *)handle); /* XXX for powerpc only ? */ 600 601 return (rman_activate_resource(res)); 602 } 603 604 #ifdef __powerpc__ 605 static bus_space_tag_t 606 ofw_pcib_bus_get_bus_tag(device_t bus, device_t child) 607 { 608 609 return (&bs_le_tag); 610 } 611 #endif 612 613 static int 614 ofw_pcib_deactivate_resource(device_t bus, device_t child, int type, int rid, 615 struct resource *res) 616 { 617 vm_size_t psize; 618 619 if (type != SYS_RES_IOPORT && type != SYS_RES_MEMORY) { 620 return (bus_generic_deactivate_resource(bus, child, type, rid, 621 res)); 622 } 623 624 psize = rman_get_size(res); 625 pmap_unmapdev(rman_get_virtual(res), psize); 626 627 return (rman_deactivate_resource(res)); 628 } 629 630 static int 631 ofw_pcib_adjust_resource(device_t bus, device_t child, int type, 632 struct resource *res, rman_res_t start, rman_res_t end) 633 { 634 struct rman *rm; 635 struct ofw_pci_softc *sc; 636 637 sc = device_get_softc(bus); 638 #if defined(NEW_PCIB) && defined(PCI_RES_BUS) 639 if (type == PCI_RES_BUS) 640 return (pci_domain_adjust_bus(sc->sc_pci_domain, child, res, 641 start, end)); 642 #endif 643 644 rm = ofw_pcib_get_rman(sc, type, rman_get_flags(res)); 645 if (rm == NULL) { 646 return (bus_generic_adjust_resource(bus, child, type, res, 647 start, end)); 648 } 649 KASSERT(rman_is_region_manager(res, rm), ("rman mismatch")); 650 KASSERT(!(rman_get_flags(res) & RF_ACTIVE), 651 ("active resources cannot be adjusted")); 652 653 return (rman_adjust_resource(res, start, end)); 654 } 655 656 static phandle_t 657 ofw_pcib_get_node(device_t bus, device_t dev) 658 { 659 struct ofw_pci_softc *sc; 660 661 sc = device_get_softc(bus); 662 /* We only have one child, the PCI bus, which needs our own node. */ 663 664 return (sc->sc_node); 665 } 666 667 static int 668 ofw_pcib_fill_ranges(phandle_t node, struct ofw_pci_range *ranges) 669 { 670 int host_address_cells = 1, pci_address_cells = 3, size_cells = 2; 671 cell_t *base_ranges; 672 ssize_t nbase_ranges; 673 int nranges; 674 int i, j, k; 675 676 OF_getencprop(OF_parent(node), "#address-cells", &host_address_cells, 677 sizeof(host_address_cells)); 678 OF_getencprop(node, "#address-cells", &pci_address_cells, 679 sizeof(pci_address_cells)); 680 OF_getencprop(node, "#size-cells", &size_cells, sizeof(size_cells)); 681 682 nbase_ranges = OF_getproplen(node, "ranges"); 683 if (nbase_ranges <= 0) 684 return (-1); 685 nranges = nbase_ranges / sizeof(cell_t) / 686 (pci_address_cells + host_address_cells + size_cells); 687 688 base_ranges = malloc(nbase_ranges, M_DEVBUF, M_WAITOK); 689 OF_getencprop(node, "ranges", base_ranges, nbase_ranges); 690 691 for (i = 0, j = 0; i < nranges; i++) { 692 ranges[i].pci_hi = base_ranges[j++]; 693 ranges[i].pci = 0; 694 for (k = 0; k < pci_address_cells - 1; k++) { 695 ranges[i].pci <<= 32; 696 ranges[i].pci |= base_ranges[j++]; 697 } 698 ranges[i].host = 0; 699 for (k = 0; k < host_address_cells; k++) { 700 ranges[i].host <<= 32; 701 ranges[i].host |= base_ranges[j++]; 702 } 703 ranges[i].size = 0; 704 for (k = 0; k < size_cells; k++) { 705 ranges[i].size <<= 32; 706 ranges[i].size |= base_ranges[j++]; 707 } 708 } 709 710 free(base_ranges, M_DEVBUF); 711 return (nranges); 712 } 713 714 static struct rman * 715 ofw_pcib_get_rman(struct ofw_pci_softc *sc, int type, u_int flags) 716 { 717 718 switch (type) { 719 case SYS_RES_IOPORT: 720 return (&sc->sc_io_rman); 721 case SYS_RES_MEMORY: 722 if (sc->sc_have_pmem && (flags & RF_PREFETCHABLE)) 723 return (&sc->sc_pmem_rman); 724 else 725 return (&sc->sc_mem_rman); 726 default: 727 break; 728 } 729 730 return (NULL); 731 }
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