Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
FreeBSD/Linux Kernel Cross Reference
sys/powerpc/powermac/uninorth.c
Version:
- FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
SearchContext: - none - 3 - 10
1 /*- 2 * Copyright (C) 2002 Benno Rice. 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 Benno Rice ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 18 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 20 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 21 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 22 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 23 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 * 25 * $FreeBSD$ 26 */ 27 28 #include <sys/param.h> 29 #include <sys/systm.h> 30 #include <sys/module.h> 31 #include <sys/bus.h> 32 #include <sys/conf.h> 33 #include <sys/kernel.h> 34 35 #include <dev/ofw/openfirm.h> 36 #include <dev/ofw/ofw_pci.h> 37 #include <dev/ofw/ofw_bus.h> 38 #include <dev/ofw/ofw_bus_subr.h> 39 40 #include <dev/pci/pcivar.h> 41 #include <dev/pci/pcireg.h> 42 43 #include <machine/bus.h> 44 #include <machine/intr_machdep.h> 45 #include <machine/md_var.h> 46 #include <machine/pio.h> 47 #include <machine/resource.h> 48 49 #include <sys/rman.h> 50 51 #include <powerpc/powermac/uninorthvar.h> 52 53 #include <vm/vm.h> 54 #include <vm/pmap.h> 55 56 /* 57 * Driver for the Uninorth chip itself. 58 */ 59 60 static MALLOC_DEFINE(M_UNIN, "unin", "unin device information"); 61 62 /* 63 * Device interface. 64 */ 65 66 static int unin_chip_probe(device_t); 67 static int unin_chip_attach(device_t); 68 69 /* 70 * Bus interface. 71 */ 72 static int unin_chip_print_child(device_t dev, device_t child); 73 static void unin_chip_probe_nomatch(device_t, device_t); 74 static struct resource *unin_chip_alloc_resource(device_t, device_t, int, int *, 75 u_long, u_long, u_long, u_int); 76 static int unin_chip_activate_resource(device_t, device_t, int, int, 77 struct resource *); 78 static int unin_chip_deactivate_resource(device_t, device_t, int, int, 79 struct resource *); 80 static int unin_chip_release_resource(device_t, device_t, int, int, 81 struct resource *); 82 static struct resource_list *unin_chip_get_resource_list (device_t, device_t); 83 84 /* 85 * OFW Bus interface 86 */ 87 88 static ofw_bus_get_devinfo_t unin_chip_get_devinfo; 89 90 /* 91 * Local routines 92 */ 93 94 static void unin_enable_gmac(device_t dev); 95 static void unin_enable_mpic(device_t dev); 96 97 /* 98 * Driver methods. 99 */ 100 static device_method_t unin_chip_methods[] = { 101 102 /* Device interface */ 103 DEVMETHOD(device_probe, unin_chip_probe), 104 DEVMETHOD(device_attach, unin_chip_attach), 105 106 /* Bus interface */ 107 DEVMETHOD(bus_print_child, unin_chip_print_child), 108 DEVMETHOD(bus_probe_nomatch, unin_chip_probe_nomatch), 109 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 110 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 111 112 DEVMETHOD(bus_alloc_resource, unin_chip_alloc_resource), 113 DEVMETHOD(bus_release_resource, unin_chip_release_resource), 114 DEVMETHOD(bus_activate_resource, unin_chip_activate_resource), 115 DEVMETHOD(bus_deactivate_resource, unin_chip_deactivate_resource), 116 DEVMETHOD(bus_get_resource_list, unin_chip_get_resource_list), 117 118 DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str), 119 120 /* ofw_bus interface */ 121 DEVMETHOD(ofw_bus_get_devinfo, unin_chip_get_devinfo), 122 DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat), 123 DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model), 124 DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name), 125 DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node), 126 DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type), 127 128 { 0, 0 } 129 }; 130 131 static driver_t unin_chip_driver = { 132 "unin", 133 unin_chip_methods, 134 sizeof(struct unin_chip_softc) 135 }; 136 137 static devclass_t unin_chip_devclass; 138 139 DRIVER_MODULE(unin, nexus, unin_chip_driver, unin_chip_devclass, 0, 0); 140 141 /* 142 * Add an interrupt to the dev's resource list if present 143 */ 144 static void 145 unin_chip_add_intr(phandle_t devnode, struct unin_chip_devinfo *dinfo) 146 { 147 phandle_t iparent; 148 int *intr; 149 int i, nintr; 150 int icells; 151 152 if (dinfo->udi_ninterrupts >= 6) { 153 printf("unin: device has more than 6 interrupts\n"); 154 return; 155 } 156 157 nintr = OF_getprop_alloc(devnode, "interrupts", sizeof(*intr), 158 (void **)&intr); 159 if (nintr == -1) { 160 nintr = OF_getprop_alloc(devnode, "AAPL,interrupts", 161 sizeof(*intr), (void **)&intr); 162 if (nintr == -1) 163 return; 164 } 165 166 if (intr[0] == -1) 167 return; 168 169 if (OF_getprop(devnode, "interrupt-parent", &iparent, sizeof(iparent)) 170 <= 0) 171 panic("Interrupt but no interrupt parent!\n"); 172 173 if (OF_searchprop(iparent, "#interrupt-cells", &icells, sizeof(icells)) 174 <= 0) 175 icells = 1; 176 177 for (i = 0; i < nintr; i+=icells) { 178 u_int irq = MAP_IRQ(iparent, intr[i]); 179 180 resource_list_add(&dinfo->udi_resources, SYS_RES_IRQ, 181 dinfo->udi_ninterrupts, irq, irq, 1); 182 183 if (icells > 1) { 184 powerpc_config_intr(irq, 185 (intr[i+1] & 1) ? INTR_TRIGGER_LEVEL : 186 INTR_TRIGGER_EDGE, INTR_POLARITY_LOW); 187 } 188 189 dinfo->udi_interrupts[dinfo->udi_ninterrupts] = irq; 190 dinfo->udi_ninterrupts++; 191 } 192 } 193 194 static void 195 unin_chip_add_reg(phandle_t devnode, struct unin_chip_devinfo *dinfo) 196 { 197 struct unin_chip_reg *reg; 198 int i, nreg; 199 200 nreg = OF_getprop_alloc(devnode, "reg", sizeof(*reg), (void **)®); 201 if (nreg == -1) 202 return; 203 204 for (i = 0; i < nreg; i++) { 205 resource_list_add(&dinfo->udi_resources, SYS_RES_MEMORY, i, 206 reg[i].mr_base, 207 reg[i].mr_base + reg[i].mr_size, 208 reg[i].mr_size); 209 } 210 } 211 212 static void 213 unin_enable_gmac(device_t dev) 214 { 215 volatile u_int *clkreg; 216 struct unin_chip_softc *sc; 217 u_int32_t tmpl; 218 219 sc = device_get_softc(dev); 220 clkreg = (void *)(sc->sc_addr + UNIN_CLOCKCNTL); 221 tmpl = inl(clkreg); 222 tmpl |= UNIN_CLOCKCNTL_GMAC; 223 outl(clkreg, tmpl); 224 } 225 226 static void 227 unin_enable_mpic(device_t dev) 228 { 229 volatile u_int *toggle; 230 struct unin_chip_softc *sc; 231 u_int32_t tmpl; 232 233 sc = device_get_softc(dev); 234 toggle = (void *)(sc->sc_addr + UNIN_TOGGLE_REG); 235 tmpl = inl(toggle); 236 tmpl |= UNIN_MPIC_RESET | UNIN_MPIC_OUTPUT_ENABLE; 237 outl(toggle, tmpl); 238 } 239 240 static int 241 unin_chip_probe(device_t dev) 242 { 243 const char *name; 244 245 name = ofw_bus_get_name(dev); 246 247 if (name == NULL) 248 return (ENXIO); 249 250 if (strcmp(name, "uni-n") != 0 && strcmp(name, "u3") != 0 251 && strcmp(name, "u4") != 0) 252 return (ENXIO); 253 254 device_set_desc(dev, "Apple UniNorth System Controller"); 255 return (0); 256 } 257 258 static int 259 unin_chip_attach(device_t dev) 260 { 261 struct unin_chip_softc *sc; 262 struct unin_chip_devinfo *dinfo; 263 phandle_t root; 264 phandle_t child; 265 phandle_t iparent; 266 device_t cdev; 267 char compat[32]; 268 char name[32]; 269 u_int irq, reg[3]; 270 int error, i = 0; 271 272 sc = device_get_softc(dev); 273 root = ofw_bus_get_node(dev); 274 275 if (OF_getprop(root, "reg", reg, sizeof(reg)) < 8) 276 return (ENXIO); 277 278 if (strcmp(ofw_bus_get_name(dev), "u3") == 0 279 || strcmp(ofw_bus_get_name(dev), "u4") == 0) 280 i = 1; /* #address-cells lies */ 281 282 sc->sc_physaddr = reg[i]; 283 sc->sc_size = reg[i+1]; 284 285 sc->sc_mem_rman.rm_type = RMAN_ARRAY; 286 sc->sc_mem_rman.rm_descr = "UniNorth Device Memory"; 287 288 error = rman_init(&sc->sc_mem_rman); 289 290 if (error) { 291 device_printf(dev, "rman_init() failed. error = %d\n", error); 292 return (error); 293 } 294 295 error = rman_manage_region(&sc->sc_mem_rman, sc->sc_physaddr, 296 sc->sc_physaddr + sc->sc_size - 1); 297 if (error) { 298 device_printf(dev, 299 "rman_manage_region() failed. error = %d\n", 300 error); 301 return (error); 302 } 303 304 /* 305 * Iterate through the sub-devices 306 */ 307 for (child = OF_child(root); child != 0; child = OF_peer(child)) { 308 dinfo = malloc(sizeof(*dinfo), M_UNIN, M_WAITOK | M_ZERO); 309 if (ofw_bus_gen_setup_devinfo(&dinfo->udi_obdinfo, child) 310 != 0) 311 { 312 free(dinfo, M_UNIN); 313 continue; 314 } 315 316 resource_list_init(&dinfo->udi_resources); 317 dinfo->udi_ninterrupts = 0; 318 unin_chip_add_intr(child, dinfo); 319 320 /* 321 * Some Apple machines do have a bug in OF, they miss 322 * the interrupt entries on the U3 I2C node. That means they 323 * do not have an entry with number of interrupts nor the 324 * entry of the interrupt parent handle. 325 * We define an interrupt and hardwire it to the /u3/mpic 326 * handle. 327 */ 328 329 if (OF_getprop(child, "name", name, sizeof(name)) <= 0) 330 device_printf(dev, "device has no name!\n"); 331 if (dinfo->udi_ninterrupts == 0 && 332 (strcmp(name, "i2c-bus") == 0 || 333 strcmp(name, "i2c") == 0)) { 334 if (OF_getprop(child, "interrupt-parent", &iparent, 335 sizeof(iparent)) <= 0) { 336 iparent = OF_finddevice("/u3/mpic"); 337 device_printf(dev, "Set /u3/mpic as iparent!\n"); 338 } 339 /* Add an interrupt number 0 to the parent. */ 340 irq = MAP_IRQ(iparent, 0); 341 resource_list_add(&dinfo->udi_resources, SYS_RES_IRQ, 342 dinfo->udi_ninterrupts, irq, irq, 1); 343 dinfo->udi_interrupts[dinfo->udi_ninterrupts] = irq; 344 dinfo->udi_ninterrupts++; 345 } 346 347 unin_chip_add_reg(child, dinfo); 348 349 cdev = device_add_child(dev, NULL, -1); 350 if (cdev == NULL) { 351 device_printf(dev, "<%s>: device_add_child failed\n", 352 dinfo->udi_obdinfo.obd_name); 353 resource_list_free(&dinfo->udi_resources); 354 ofw_bus_gen_destroy_devinfo(&dinfo->udi_obdinfo); 355 free(dinfo, M_UNIN); 356 continue; 357 } 358 359 device_set_ivars(cdev, dinfo); 360 } 361 362 /* 363 * Only map the first page, since that is where the registers 364 * of interest lie. 365 */ 366 sc->sc_addr = (vm_offset_t)pmap_mapdev(sc->sc_physaddr, PAGE_SIZE); 367 368 sc->sc_version = *(u_int *)sc->sc_addr; 369 device_printf(dev, "Version %d\n", sc->sc_version); 370 371 /* 372 * Enable the GMAC Ethernet cell and the integrated OpenPIC 373 * if Open Firmware says they are used. 374 */ 375 for (child = OF_child(root); child; child = OF_peer(child)) { 376 memset(compat, 0, sizeof(compat)); 377 OF_getprop(child, "compatible", compat, sizeof(compat)); 378 if (strcmp(compat, "gmac") == 0) 379 unin_enable_gmac(dev); 380 if (strcmp(compat, "chrp,open-pic") == 0) 381 unin_enable_mpic(dev); 382 } 383 384 /* 385 * GMAC lives under the PCI bus, so just check if enet is gmac. 386 */ 387 child = OF_finddevice("enet"); 388 memset(compat, 0, sizeof(compat)); 389 OF_getprop(child, "compatible", compat, sizeof(compat)); 390 if (strcmp(compat, "gmac") == 0) 391 unin_enable_gmac(dev); 392 393 return (bus_generic_attach(dev)); 394 } 395 396 static int 397 unin_chip_print_child(device_t dev, device_t child) 398 { 399 struct unin_chip_devinfo *dinfo; 400 struct resource_list *rl; 401 int retval = 0; 402 403 dinfo = device_get_ivars(child); 404 rl = &dinfo->udi_resources; 405 406 retval += bus_print_child_header(dev, child); 407 408 retval += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx"); 409 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld"); 410 411 retval += bus_print_child_footer(dev, child); 412 413 return (retval); 414 } 415 416 static void 417 unin_chip_probe_nomatch(device_t dev, device_t child) 418 { 419 struct unin_chip_devinfo *dinfo; 420 struct resource_list *rl; 421 const char *type; 422 423 if (bootverbose) { 424 dinfo = device_get_ivars(child); 425 rl = &dinfo->udi_resources; 426 427 if ((type = ofw_bus_get_type(child)) == NULL) 428 type = "(unknown)"; 429 device_printf(dev, "<%s, %s>", type, ofw_bus_get_name(child)); 430 resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx"); 431 resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld"); 432 printf(" (no driver attached)\n"); 433 } 434 } 435 436 437 static struct resource * 438 unin_chip_alloc_resource(device_t bus, device_t child, int type, int *rid, 439 u_long start, u_long end, u_long count, u_int flags) 440 { 441 struct unin_chip_softc *sc; 442 int needactivate; 443 struct resource *rv; 444 struct rman *rm; 445 u_long adjstart, adjend, adjcount; 446 struct unin_chip_devinfo *dinfo; 447 struct resource_list_entry *rle; 448 449 sc = device_get_softc(bus); 450 dinfo = device_get_ivars(child); 451 452 needactivate = flags & RF_ACTIVE; 453 flags &= ~RF_ACTIVE; 454 455 switch (type) { 456 case SYS_RES_MEMORY: 457 case SYS_RES_IOPORT: 458 rle = resource_list_find(&dinfo->udi_resources, SYS_RES_MEMORY, 459 *rid); 460 if (rle == NULL) { 461 device_printf(bus, "no rle for %s memory %d\n", 462 device_get_nameunit(child), *rid); 463 return (NULL); 464 } 465 466 rle->end = rle->end - 1; /* Hack? */ 467 468 if (start < rle->start) 469 adjstart = rle->start; 470 else if (start > rle->end) 471 adjstart = rle->end; 472 else 473 adjstart = start; 474 475 if (end < rle->start) 476 adjend = rle->start; 477 else if (end > rle->end) 478 adjend = rle->end; 479 else 480 adjend = end; 481 482 adjcount = adjend - adjstart; 483 484 rm = &sc->sc_mem_rman; 485 break; 486 487 case SYS_RES_IRQ: 488 /* Check for passthrough from subattachments. */ 489 if (device_get_parent(child) != bus) 490 return BUS_ALLOC_RESOURCE(device_get_parent(bus), child, 491 type, rid, start, end, count, 492 flags); 493 494 rle = resource_list_find(&dinfo->udi_resources, SYS_RES_IRQ, 495 *rid); 496 if (rle == NULL) { 497 if (dinfo->udi_ninterrupts >= 6) { 498 device_printf(bus, 499 "%s has more than 6 interrupts\n", 500 device_get_nameunit(child)); 501 return (NULL); 502 } 503 resource_list_add(&dinfo->udi_resources, SYS_RES_IRQ, 504 dinfo->udi_ninterrupts, start, start, 505 1); 506 507 dinfo->udi_interrupts[dinfo->udi_ninterrupts] = start; 508 dinfo->udi_ninterrupts++; 509 } 510 511 return (resource_list_alloc(&dinfo->udi_resources, bus, child, 512 type, rid, start, end, count, 513 flags)); 514 default: 515 device_printf(bus, "unknown resource request from %s\n", 516 device_get_nameunit(child)); 517 return (NULL); 518 } 519 520 rv = rman_reserve_resource(rm, adjstart, adjend, adjcount, flags, 521 child); 522 if (rv == NULL) { 523 device_printf(bus, 524 "failed to reserve resource %#lx - %#lx (%#lx)" 525 " for %s\n", adjstart, adjend, adjcount, 526 device_get_nameunit(child)); 527 return (NULL); 528 } 529 530 rman_set_rid(rv, *rid); 531 532 if (needactivate) { 533 if (bus_activate_resource(child, type, *rid, rv) != 0) { 534 device_printf(bus, 535 "failed to activate resource for %s\n", 536 device_get_nameunit(child)); 537 rman_release_resource(rv); 538 return (NULL); 539 } 540 } 541 542 return (rv); 543 } 544 545 static int 546 unin_chip_release_resource(device_t bus, device_t child, int type, int rid, 547 struct resource *res) 548 { 549 if (rman_get_flags(res) & RF_ACTIVE) { 550 int error = bus_deactivate_resource(child, type, rid, res); 551 if (error) 552 return error; 553 } 554 555 return (rman_release_resource(res)); 556 } 557 558 static int 559 unin_chip_activate_resource(device_t bus, device_t child, int type, int rid, 560 struct resource *res) 561 { 562 void *p; 563 564 if (type == SYS_RES_IRQ) 565 return (bus_activate_resource(bus, type, rid, res)); 566 567 if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) { 568 vm_offset_t start; 569 570 start = (vm_offset_t) rman_get_start(res); 571 572 if (bootverbose) 573 printf("unin mapdev: start %zx, len %ld\n", start, 574 rman_get_size(res)); 575 576 p = pmap_mapdev(start, (vm_size_t) rman_get_size(res)); 577 if (p == NULL) 578 return (ENOMEM); 579 rman_set_virtual(res, p); 580 rman_set_bustag(res, &bs_be_tag); 581 rman_set_bushandle(res, (u_long)p); 582 } 583 584 return (rman_activate_resource(res)); 585 } 586 587 588 static int 589 unin_chip_deactivate_resource(device_t bus, device_t child, int type, int rid, 590 struct resource *res) 591 { 592 /* 593 * If this is a memory resource, unmap it. 594 */ 595 if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) { 596 u_int32_t psize; 597 598 psize = rman_get_size(res); 599 pmap_unmapdev((vm_offset_t)rman_get_virtual(res), psize); 600 } 601 602 return (rman_deactivate_resource(res)); 603 } 604 605 606 static struct resource_list * 607 unin_chip_get_resource_list (device_t dev, device_t child) 608 { 609 struct unin_chip_devinfo *dinfo; 610 611 dinfo = device_get_ivars(child); 612 return (&dinfo->udi_resources); 613 } 614 615 static const struct ofw_bus_devinfo * 616 unin_chip_get_devinfo(device_t dev, device_t child) 617 { 618 struct unin_chip_devinfo *dinfo; 619 620 dinfo = device_get_ivars(child); 621 return (&dinfo->udi_obdinfo); 622 } 623
Cache object: cbf29cb5efae5ae57ba18589b306f2d8
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]