uninorth.c revision 168200
1193323Sed/*- 2193323Sed * Copyright (C) 2002 Benno Rice. 3193323Sed * All rights reserved. 4193323Sed * 5193323Sed * Redistribution and use in source and binary forms, with or without 6193323Sed * modification, are permitted provided that the following conditions 7193323Sed * are met: 8193323Sed * 1. Redistributions of source code must retain the above copyright 9193323Sed * notice, this list of conditions and the following disclaimer. 10193323Sed * 2. Redistributions in binary form must reproduce the above copyright 11193323Sed * notice, this list of conditions and the following disclaimer in the 12249423Sdim * documentation and/or other materials provided with the distribution. 13251662Sdim * 14193323Sed * THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR 15249423Sdim * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16193323Sed * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17193323Sed * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 18193323Sed * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19193323Sed * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 20193323Sed * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 21193323Sed * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 22202375Srdivacky * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 23202375Srdivacky * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24202375Srdivacky * 25203954Srdivacky * $FreeBSD: head/sys/powerpc/powermac/uninorth.c 168200 2007-04-01 06:15:53Z marcel $ 26203954Srdivacky */ 27193323Sed 28193323Sed#include <sys/param.h> 29202375Srdivacky#include <sys/systm.h> 30202375Srdivacky#include <sys/module.h> 31202375Srdivacky#include <sys/bus.h> 32202375Srdivacky#include <sys/conf.h> 33195340Sed#include <sys/kernel.h> 34249423Sdim 35198090Srdivacky#include <dev/ofw/openfirm.h> 36195340Sed#include <dev/ofw/ofw_pci.h> 37195340Sed 38195340Sed#include <dev/pci/pcivar.h> 39195340Sed#include <dev/pci/pcireg.h> 40195340Sed 41195340Sed#include <machine/bus.h> 42249423Sdim#include <machine/md_var.h> 43195340Sed#include <machine/nexusvar.h> 44195340Sed#include <machine/resource.h> 45195340Sed 46193323Sed#include <sys/rman.h> 47193323Sed 48249423Sdim#include <powerpc/ofw/ofw_pci.h> 49204642Srdivacky#include <powerpc/powermac/uninorthvar.h> 50204642Srdivacky 51204642Srdivacky#include <vm/vm.h> 52204642Srdivacky#include <vm/pmap.h> 53195340Sed 54249423Sdim#include "pcib_if.h" 55204642Srdivacky 56204642Srdivacky#define UNINORTH_DEBUG 0 57204642Srdivacky 58193323Sed/* 59193323Sed * Device interface. 60193323Sed */ 61193323Sedstatic int uninorth_probe(device_t); 62249423Sdimstatic int uninorth_attach(device_t); 63193323Sed 64204642Srdivacky/* 65193323Sed * Bus interface. 66204642Srdivacky */ 67204642Srdivackystatic int uninorth_read_ivar(device_t, device_t, int, 68204642Srdivacky uintptr_t *); 69204642Srdivackystatic struct resource * uninorth_alloc_resource(device_t bus, 70204642Srdivacky device_t child, int type, int *rid, u_long start, 71204642Srdivacky u_long end, u_long count, u_int flags); 72204642Srdivackystatic int uninorth_activate_resource(device_t bus, device_t child, 73204642Srdivacky int type, int rid, struct resource *res); 74204642Srdivacky 75204642Srdivacky/* 76204642Srdivacky * pcib interface. 77204642Srdivacky */ 78204642Srdivackystatic int uninorth_maxslots(device_t); 79204642Srdivackystatic u_int32_t uninorth_read_config(device_t, u_int, u_int, u_int, 80204642Srdivacky u_int, int); 81204642Srdivackystatic void uninorth_write_config(device_t, u_int, u_int, u_int, 82204642Srdivacky u_int, u_int32_t, int); 83204642Srdivackystatic int uninorth_route_interrupt(device_t, device_t, int); 84204642Srdivacky 85204642Srdivacky/* 86204642Srdivacky * Local routines. 87204642Srdivacky */ 88204642Srdivackystatic int uninorth_enable_config(struct uninorth_softc *, u_int, 89204642Srdivacky u_int, u_int, u_int); 90static void unin_enable_gmac(void); 91 92/* 93 * Driver methods. 94 */ 95static device_method_t uninorth_methods[] = { 96 /* Device interface */ 97 DEVMETHOD(device_probe, uninorth_probe), 98 DEVMETHOD(device_attach, uninorth_attach), 99 100 /* Bus interface */ 101 DEVMETHOD(bus_print_child, bus_generic_print_child), 102 DEVMETHOD(bus_read_ivar, uninorth_read_ivar), 103 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 104 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 105 DEVMETHOD(bus_alloc_resource, uninorth_alloc_resource), 106 DEVMETHOD(bus_activate_resource, uninorth_activate_resource), 107 108 /* pcib interface */ 109 DEVMETHOD(pcib_maxslots, uninorth_maxslots), 110 DEVMETHOD(pcib_read_config, uninorth_read_config), 111 DEVMETHOD(pcib_write_config, uninorth_write_config), 112 DEVMETHOD(pcib_route_interrupt, uninorth_route_interrupt), 113 114 { 0, 0 } 115}; 116 117static driver_t uninorth_driver = { 118 "pcib", 119 uninorth_methods, 120 sizeof(struct uninorth_softc) 121}; 122 123static devclass_t uninorth_devclass; 124 125DRIVER_MODULE(uninorth, nexus, uninorth_driver, uninorth_devclass, 0, 0); 126 127static int 128uninorth_probe(device_t dev) 129{ 130 char *type, *compatible; 131 132 type = nexus_get_device_type(dev); 133 compatible = nexus_get_compatible(dev); 134 135 if (type == NULL || compatible == NULL) 136 return (ENXIO); 137 138 if (strcmp(type, "pci") != 0 || strcmp(compatible, "uni-north") != 0) 139 return (ENXIO); 140 141 device_set_desc(dev, "Apple UniNorth Host-PCI bridge"); 142 return (0); 143} 144 145static int 146uninorth_attach(device_t dev) 147{ 148 struct uninorth_softc *sc; 149 phandle_t node; 150 phandle_t child; 151 u_int32_t reg[2], busrange[2]; 152 struct uninorth_range *rp, *io, *mem[2]; 153 int nmem, i; 154 155 node = nexus_get_node(dev); 156 sc = device_get_softc(dev); 157 158 if (OF_getprop(node, "reg", reg, sizeof(reg)) < 8) 159 return (ENXIO); 160 161 if (OF_getprop(node, "bus-range", busrange, sizeof(busrange)) != 8) 162 return (ENXIO); 163 164 sc->sc_dev = dev; 165 sc->sc_node = node; 166 sc->sc_addr = (vm_offset_t)pmap_mapdev(reg[0] + 0x800000, PAGE_SIZE); 167 sc->sc_data = (vm_offset_t)pmap_mapdev(reg[0] + 0xc00000, PAGE_SIZE); 168 sc->sc_bus = busrange[0]; 169 170 bzero(sc->sc_range, sizeof(sc->sc_range)); 171 sc->sc_nrange = OF_getprop(node, "ranges", sc->sc_range, 172 sizeof(sc->sc_range)); 173 174 if (sc->sc_nrange == -1) { 175 device_printf(dev, "could not get ranges\n"); 176 return (ENXIO); 177 } 178 179 sc->sc_range[6].pci_hi = 0; 180 io = NULL; 181 nmem = 0; 182 183 for (rp = sc->sc_range; rp->pci_hi != 0; rp++) { 184 switch (rp->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) { 185 case OFW_PCI_PHYS_HI_SPACE_CONFIG: 186 break; 187 case OFW_PCI_PHYS_HI_SPACE_IO: 188 io = rp; 189 break; 190 case OFW_PCI_PHYS_HI_SPACE_MEM32: 191 mem[nmem] = rp; 192 nmem++; 193 break; 194 case OFW_PCI_PHYS_HI_SPACE_MEM64: 195 break; 196 } 197 } 198 199 if (io == NULL) { 200 device_printf(dev, "can't find io range\n"); 201 return (ENXIO); 202 } 203 sc->sc_io_rman.rm_type = RMAN_ARRAY; 204 sc->sc_io_rman.rm_descr = "UniNorth PCI I/O Ports"; 205 sc->sc_iostart = io->host; 206 if (rman_init(&sc->sc_io_rman) != 0 || 207 rman_manage_region(&sc->sc_io_rman, io->pci_lo, 208 io->pci_lo + io->size_lo - 1) != 0) { 209 device_printf(dev, "failed to set up io range management\n"); 210 return (ENXIO); 211 } 212 213 if (nmem == 0) { 214 device_printf(dev, "can't find mem ranges\n"); 215 return (ENXIO); 216 } 217 sc->sc_mem_rman.rm_type = RMAN_ARRAY; 218 sc->sc_mem_rman.rm_descr = "UniNorth PCI Memory"; 219 if (rman_init(&sc->sc_mem_rman) != 0) { 220 device_printf(dev, 221 "failed to init mem range resources\n"); 222 return (ENXIO); 223 } 224 for (i = 0; i < nmem; i++) { 225 if (rman_manage_region(&sc->sc_mem_rman, mem[i]->pci_lo, 226 mem[i]->pci_lo + mem[i]->size_lo - 1) != 0) { 227 device_printf(dev, 228 "failed to set up memory range management\n"); 229 return (ENXIO); 230 } 231 } 232 233 /* 234 * Enable the GMAC Ethernet cell if Open Firmware says it is 235 * used. 236 */ 237 for (child = OF_child(node); child; child = OF_peer(child)) { 238 char compat[32]; 239 240 memset(compat, 0, sizeof(compat)); 241 OF_getprop(child, "compatible", compat, sizeof(compat)); 242 if (strcmp(compat, "gmac") == 0) { 243 unin_enable_gmac(); 244 } 245 } 246 247 /* 248 * Write out the correct PIC interrupt values to config space 249 * of all devices on the bus. This has to be done after the GEM 250 * cell is enabled above. 251 */ 252 ofw_pci_fixup(dev, sc->sc_bus, node); 253 254 device_add_child(dev, "pci", device_get_unit(dev)); 255 return (bus_generic_attach(dev)); 256} 257 258static int 259uninorth_maxslots(device_t dev) 260{ 261 262 return (PCI_SLOTMAX); 263} 264 265static u_int32_t 266uninorth_read_config(device_t dev, u_int bus, u_int slot, u_int func, u_int reg, 267 int width) 268{ 269 struct uninorth_softc *sc; 270 vm_offset_t caoff; 271 272 sc = device_get_softc(dev); 273 caoff = sc->sc_data + (reg & 0x07); 274 275 if (uninorth_enable_config(sc, bus, slot, func, reg) != 0) { 276 switch (width) { 277 case 1: 278 return (in8rb(caoff)); 279 break; 280 case 2: 281 return (in16rb(caoff)); 282 break; 283 case 4: 284 return (in32rb(caoff)); 285 break; 286 } 287 } 288 289 return (0xffffffff); 290} 291 292static void 293uninorth_write_config(device_t dev, u_int bus, u_int slot, u_int func, 294 u_int reg, u_int32_t val, int width) 295{ 296 struct uninorth_softc *sc; 297 vm_offset_t caoff; 298 299 sc = device_get_softc(dev); 300 caoff = sc->sc_data + (reg & 0x07); 301 302 if (uninorth_enable_config(sc, bus, slot, func, reg)) { 303 switch (width) { 304 case 1: 305 out8rb(caoff, val); 306 break; 307 case 2: 308 out16rb(caoff, val); 309 break; 310 case 4: 311 out32rb(caoff, val); 312 break; 313 } 314 } 315} 316 317static int 318uninorth_route_interrupt(device_t bus, device_t dev, int pin) 319{ 320 321 return (0); 322} 323 324static int 325uninorth_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 326{ 327 struct uninorth_softc *sc; 328 329 sc = device_get_softc(dev); 330 331 switch (which) { 332 case PCIB_IVAR_BUS: 333 *result = sc->sc_bus; 334 return (0); 335 break; 336 } 337 338 return (ENOENT); 339} 340 341static struct resource * 342uninorth_alloc_resource(device_t bus, device_t child, int type, int *rid, 343 u_long start, u_long end, u_long count, u_int flags) 344{ 345 struct uninorth_softc *sc; 346 struct resource *rv; 347 struct rman *rm; 348 bus_space_tag_t bt; 349 int needactivate; 350 351 needactivate = flags & RF_ACTIVE; 352 flags &= ~RF_ACTIVE; 353 354 sc = device_get_softc(bus); 355 356 switch (type) { 357 case SYS_RES_MEMORY: 358 rm = &sc->sc_mem_rman; 359 bt = PPC_BUS_SPACE_MEM; 360 break; 361 362 case SYS_RES_IOPORT: 363 rm = &sc->sc_io_rman; 364 bt = PPC_BUS_SPACE_IO; 365 break; 366 367 case SYS_RES_IRQ: 368 return (bus_alloc_resource(bus, type, rid, start, end, count, 369 flags)); 370 break; 371 default: 372 device_printf(bus, "unknown resource request from %s\n", 373 device_get_nameunit(child)); 374 return (NULL); 375 } 376 377 rv = rman_reserve_resource(rm, start, end, count, flags, child); 378 if (rv == NULL) { 379 device_printf(bus, "failed to reserve resource for %s\n", 380 device_get_nameunit(child)); 381 return (NULL); 382 } 383 384 rman_set_rid(rv, *rid); 385 rman_set_bustag(rv, bt); 386 rman_set_bushandle(rv, rman_get_start(rv)); 387 388 if (needactivate) { 389 if (bus_activate_resource(child, type, *rid, rv) != 0) { 390 device_printf(bus, 391 "failed to activate resource for %s\n", 392 device_get_nameunit(child)); 393 rman_release_resource(rv); 394 return (NULL); 395 } 396 } 397 398 return (rv); 399} 400 401static int 402uninorth_activate_resource(device_t bus, device_t child, int type, int rid, 403 struct resource *res) 404{ 405 void *p; 406 struct uninorth_softc *sc; 407 408 sc = device_get_softc(bus); 409 410 if (type == SYS_RES_IRQ) 411 return (bus_activate_resource(bus, type, rid, res)); 412 413 if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) { 414 vm_offset_t start; 415 416 start = (vm_offset_t)rman_get_start(res); 417 /* 418 * For i/o-ports, convert the start address to the 419 * uninorth PCI i/o window 420 */ 421 if (type == SYS_RES_IOPORT) 422 start += sc->sc_iostart; 423 424 if (bootverbose) 425 printf("uninorth mapdev: start %x, len %ld\n", start, 426 rman_get_size(res)); 427 428 p = pmap_mapdev(start, (vm_size_t)rman_get_size(res)); 429 if (p == NULL) 430 return (ENOMEM); 431 rman_set_virtual(res, p); 432 rman_set_bushandle(res, (u_long)p); 433 } 434 435 return (rman_activate_resource(res)); 436} 437 438static int 439uninorth_enable_config(struct uninorth_softc *sc, u_int bus, u_int slot, 440 u_int func, u_int reg) 441{ 442 uint32_t cfgval; 443 uint32_t pass; 444 445 if (resource_int_value(device_get_name(sc->sc_dev), 446 device_get_unit(sc->sc_dev), "skipslot", &pass) == 0) { 447 if (pass == slot) 448 return (0); 449 } 450 451 if (sc->sc_bus == bus) { 452 /* 453 * No slots less than 11 on the primary bus 454 */ 455 if (slot < 11) 456 return (0); 457 458 cfgval = (1 << slot) | (func << 8) | (reg & 0xfc); 459 } else { 460 cfgval = (bus << 16) | (slot << 11) | (func << 8) | 461 (reg & 0xfc) | 1; 462 } 463 464 do { 465 out32rb(sc->sc_addr, cfgval); 466 } while (in32rb(sc->sc_addr) != cfgval); 467 468 return (1); 469} 470 471/* 472 * Driver to swallow UniNorth host bridges from the PCI bus side. 473 */ 474static int 475unhb_probe(device_t dev) 476{ 477 478 if (pci_get_class(dev) == PCIC_BRIDGE && 479 pci_get_subclass(dev) == PCIS_BRIDGE_HOST) { 480 device_set_desc(dev, "Host to PCI bridge"); 481 device_quiet(dev); 482 return (-10000); 483 } 484 485 return (ENXIO); 486} 487 488static int 489unhb_attach(device_t dev) 490{ 491 492 return (0); 493} 494 495static device_method_t unhb_methods[] = { 496 /* Device interface */ 497 DEVMETHOD(device_probe, unhb_probe), 498 DEVMETHOD(device_attach, unhb_attach), 499 500 { 0, 0 } 501}; 502 503static driver_t unhb_driver = { 504 "unhb", 505 unhb_methods, 506 1, 507}; 508static devclass_t unhb_devclass; 509 510DRIVER_MODULE(unhb, pci, unhb_driver, unhb_devclass, 0, 0); 511 512 513/* 514 * Small stub driver for the Uninorth chip itself, to allow setting 515 * of various parameters and cell enables 516 */ 517static struct unin_chip_softc *uncsc; 518 519static void 520unin_enable_gmac(void) 521{ 522 volatile u_int *clkreg; 523 u_int32_t tmpl; 524 525 if (uncsc == NULL) 526 panic("unin_enable_gmac: device not found"); 527 528 clkreg = (void *)(uncsc->sc_addr + UNIN_CLOCKCNTL); 529 tmpl = inl(clkreg); 530 tmpl |= UNIN_CLOCKCNTL_GMAC; 531 outl(clkreg, tmpl); 532} 533 534static int 535unin_chip_probe(device_t dev) 536{ 537 char *name; 538 539 name = nexus_get_name(dev); 540 541 if (name == NULL) 542 return (ENXIO); 543 544 if (strcmp(name, "uni-n") != 0) 545 return (ENXIO); 546 547 device_set_desc(dev, "Apple UniNorth System Controller"); 548 return (0); 549} 550 551static int 552unin_chip_attach(device_t dev) 553{ 554 phandle_t node; 555 u_int reg[2]; 556 557 uncsc = device_get_softc(dev); 558 node = nexus_get_node(dev); 559 560 if (OF_getprop(node, "reg", reg, sizeof(reg)) < 8) 561 return (ENXIO); 562 563 uncsc->sc_physaddr = reg[0]; 564 uncsc->sc_size = reg[1]; 565 566 /* 567 * Only map the first page, since that is where the registers 568 * of interest lie. 569 */ 570 uncsc->sc_addr = (vm_offset_t) pmap_mapdev(reg[0], PAGE_SIZE); 571 572 uncsc->sc_version = *(u_int *)uncsc->sc_addr; 573 device_printf(dev, "Version %d\n", uncsc->sc_version); 574 575 return (0); 576} 577 578static device_method_t unin_chip_methods[] = { 579 /* Device interface */ 580 DEVMETHOD(device_probe, unin_chip_probe), 581 DEVMETHOD(device_attach, unin_chip_attach), 582 583 { 0, 0 } 584}; 585 586static driver_t unin_chip_driver = { 587 "unin", 588 unin_chip_methods, 589 sizeof(struct unin_chip_softc) 590}; 591 592static devclass_t unin_chip_devclass; 593 594DRIVER_MODULE(unin, nexus, unin_chip_driver, unin_chip_devclass, 0, 0); 595 596 597 598 599