Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/powerpc/powermac/uninorth.c
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1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (C) 2002 Benno Rice. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/module.h> 33 #include <sys/bus.h> 34 #include <sys/conf.h> 35 #include <sys/kernel.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 42 #include <dev/pci/pcivar.h> 43 #include <dev/pci/pcireg.h> 44 45 #include <machine/bus.h> 46 #include <machine/intr_machdep.h> 47 #include <machine/md_var.h> 48 #include <machine/pio.h> 49 #include <machine/resource.h> 50 51 #include <sys/rman.h> 52 53 #include <powerpc/powermac/uninorthvar.h> 54 55 #include <vm/vm.h> 56 #include <vm/pmap.h> 57 58 /* 59 * Driver for the Uninorth chip itself. 60 */ 61 62 static MALLOC_DEFINE(M_UNIN, "unin", "unin device information"); 63 64 /* 65 * Device interface. 66 */ 67 68 static int unin_chip_probe(device_t); 69 static int unin_chip_attach(device_t); 70 71 /* 72 * Bus interface. 73 */ 74 static int unin_chip_print_child(device_t dev, device_t child); 75 static void unin_chip_probe_nomatch(device_t, device_t); 76 static struct resource *unin_chip_alloc_resource(device_t, device_t, int, int *, 77 rman_res_t, rman_res_t, 78 rman_res_t, u_int); 79 static int unin_chip_activate_resource(device_t, device_t, int, int, 80 struct resource *); 81 static int unin_chip_deactivate_resource(device_t, device_t, int, int, 82 struct resource *); 83 static int unin_chip_release_resource(device_t, device_t, int, int, 84 struct resource *); 85 static struct resource_list *unin_chip_get_resource_list (device_t, device_t); 86 87 /* 88 * OFW Bus interface 89 */ 90 91 static ofw_bus_get_devinfo_t unin_chip_get_devinfo; 92 93 /* 94 * Local routines 95 */ 96 97 static void unin_enable_gmac(device_t dev); 98 static void unin_enable_mpic(device_t dev); 99 100 /* 101 * Driver methods. 102 */ 103 static device_method_t unin_chip_methods[] = { 104 /* Device interface */ 105 DEVMETHOD(device_probe, unin_chip_probe), 106 DEVMETHOD(device_attach, unin_chip_attach), 107 108 /* Bus interface */ 109 DEVMETHOD(bus_print_child, unin_chip_print_child), 110 DEVMETHOD(bus_probe_nomatch, unin_chip_probe_nomatch), 111 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 112 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 113 114 DEVMETHOD(bus_alloc_resource, unin_chip_alloc_resource), 115 DEVMETHOD(bus_release_resource, unin_chip_release_resource), 116 DEVMETHOD(bus_activate_resource, unin_chip_activate_resource), 117 DEVMETHOD(bus_deactivate_resource, unin_chip_deactivate_resource), 118 DEVMETHOD(bus_get_resource_list, unin_chip_get_resource_list), 119 120 DEVMETHOD(bus_child_pnpinfo, ofw_bus_gen_child_pnpinfo), 121 122 /* ofw_bus interface */ 123 DEVMETHOD(ofw_bus_get_devinfo, unin_chip_get_devinfo), 124 DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat), 125 DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model), 126 DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name), 127 DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node), 128 DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type), 129 { 0, 0 } 130 }; 131 132 static driver_t unin_chip_driver = { 133 "unin", 134 unin_chip_methods, 135 sizeof(struct unin_chip_softc) 136 }; 137 138 /* 139 * Assume there is only one unin chip in a PowerMac, so that pmu.c functions can 140 * suspend the chip after the whole rest of the device tree is suspended, not 141 * earlier. 142 */ 143 static device_t unin_chip; 144 145 EARLY_DRIVER_MODULE(unin, ofwbus, unin_chip_driver, 0, 0, BUS_PASS_BUS); 146 147 /* 148 * Add an interrupt to the dev's resource list if present 149 */ 150 static void 151 unin_chip_add_intr(phandle_t devnode, struct unin_chip_devinfo *dinfo) 152 { 153 phandle_t iparent; 154 int *intr; 155 int i, nintr; 156 int icells; 157 158 if (dinfo->udi_ninterrupts >= 6) { 159 printf("unin: device has more than 6 interrupts\n"); 160 return; 161 } 162 163 nintr = OF_getprop_alloc_multi(devnode, "interrupts", sizeof(*intr), 164 (void **)&intr); 165 if (nintr == -1) { 166 nintr = OF_getprop_alloc_multi(devnode, "AAPL,interrupts", 167 sizeof(*intr), (void **)&intr); 168 if (nintr == -1) 169 return; 170 } 171 172 if (intr[0] == -1) 173 return; 174 175 if (OF_getprop(devnode, "interrupt-parent", &iparent, sizeof(iparent)) 176 <= 0) 177 panic("Interrupt but no interrupt parent!\n"); 178 179 if (OF_searchprop(iparent, "#interrupt-cells", &icells, sizeof(icells)) 180 <= 0) 181 icells = 1; 182 183 for (i = 0; i < nintr; i+=icells) { 184 u_int irq = MAP_IRQ(iparent, intr[i]); 185 186 resource_list_add(&dinfo->udi_resources, SYS_RES_IRQ, 187 dinfo->udi_ninterrupts, irq, irq, 1); 188 189 if (icells > 1) { 190 powerpc_config_intr(irq, 191 (intr[i+1] & 1) ? INTR_TRIGGER_LEVEL : 192 INTR_TRIGGER_EDGE, INTR_POLARITY_LOW); 193 } 194 195 dinfo->udi_interrupts[dinfo->udi_ninterrupts] = irq; 196 dinfo->udi_ninterrupts++; 197 } 198 } 199 200 static void 201 unin_chip_add_reg(phandle_t devnode, struct unin_chip_devinfo *dinfo) 202 { 203 struct unin_chip_reg *reg; 204 int i, nreg; 205 206 nreg = OF_getprop_alloc_multi(devnode, "reg", sizeof(*reg), (void **)®); 207 if (nreg == -1) 208 return; 209 210 for (i = 0; i < nreg; i++) { 211 resource_list_add(&dinfo->udi_resources, SYS_RES_MEMORY, i, 212 reg[i].mr_base, 213 reg[i].mr_base + reg[i].mr_size, 214 reg[i].mr_size); 215 } 216 } 217 218 static void 219 unin_update_reg(device_t dev, uint32_t regoff, uint32_t set, uint32_t clr) 220 { 221 volatile u_int *reg; 222 struct unin_chip_softc *sc; 223 u_int32_t tmpl; 224 225 sc = device_get_softc(dev); 226 reg = (void *)(sc->sc_addr + regoff); 227 tmpl = inl(reg); 228 tmpl &= ~clr; 229 tmpl |= set; 230 outl(reg, tmpl); 231 } 232 233 static void 234 unin_enable_gmac(device_t dev) 235 { 236 unin_update_reg(dev, UNIN_CLOCKCNTL, UNIN_CLOCKCNTL_GMAC, 0); 237 } 238 239 static void 240 unin_enable_mpic(device_t dev) 241 { 242 unin_update_reg(dev, UNIN_TOGGLE_REG, UNIN_MPIC_RESET | UNIN_MPIC_OUTPUT_ENABLE, 0); 243 } 244 245 static int 246 unin_chip_probe(device_t dev) 247 { 248 const char *name; 249 250 name = ofw_bus_get_name(dev); 251 252 if (name == NULL) 253 return (ENXIO); 254 255 if (strcmp(name, "uni-n") != 0 && strcmp(name, "u3") != 0 256 && strcmp(name, "u4") != 0) 257 return (ENXIO); 258 259 device_set_desc(dev, "Apple UniNorth System Controller"); 260 return (0); 261 } 262 263 static int 264 unin_chip_attach(device_t dev) 265 { 266 struct unin_chip_softc *sc; 267 struct unin_chip_devinfo *dinfo; 268 phandle_t root; 269 phandle_t child; 270 phandle_t iparent; 271 device_t cdev; 272 cell_t acells, scells; 273 char compat[32]; 274 char name[32]; 275 u_int irq, reg[3]; 276 int error, i = 0; 277 278 sc = device_get_softc(dev); 279 root = ofw_bus_get_node(dev); 280 281 if (OF_getprop(root, "reg", reg, sizeof(reg)) < 8) 282 return (ENXIO); 283 284 acells = scells = 1; 285 OF_getprop(OF_parent(root), "#address-cells", &acells, sizeof(acells)); 286 OF_getprop(OF_parent(root), "#size-cells", &scells, sizeof(scells)); 287 288 i = 0; 289 sc->sc_physaddr = reg[i++]; 290 if (acells == 2) { 291 sc->sc_physaddr <<= 32; 292 sc->sc_physaddr |= reg[i++]; 293 } 294 sc->sc_size = reg[i++]; 295 if (scells == 2) { 296 sc->sc_size <<= 32; 297 sc->sc_size |= reg[i++]; 298 } 299 300 sc->sc_mem_rman.rm_type = RMAN_ARRAY; 301 sc->sc_mem_rman.rm_descr = "UniNorth Device Memory"; 302 303 error = rman_init(&sc->sc_mem_rman); 304 305 if (error) { 306 device_printf(dev, "rman_init() failed. error = %d\n", error); 307 return (error); 308 } 309 310 error = rman_manage_region(&sc->sc_mem_rman, sc->sc_physaddr, 311 sc->sc_physaddr + sc->sc_size - 1); 312 if (error) { 313 device_printf(dev, 314 "rman_manage_region() failed. error = %d\n", 315 error); 316 return (error); 317 } 318 319 if (unin_chip == NULL) 320 unin_chip = dev; 321 322 /* 323 * Iterate through the sub-devices 324 */ 325 for (child = OF_child(root); child != 0; child = OF_peer(child)) { 326 dinfo = malloc(sizeof(*dinfo), M_UNIN, M_WAITOK | M_ZERO); 327 if (ofw_bus_gen_setup_devinfo(&dinfo->udi_obdinfo, child) 328 != 0) 329 { 330 free(dinfo, M_UNIN); 331 continue; 332 } 333 334 resource_list_init(&dinfo->udi_resources); 335 dinfo->udi_ninterrupts = 0; 336 unin_chip_add_intr(child, dinfo); 337 338 /* 339 * Some Apple machines do have a bug in OF, they miss 340 * the interrupt entries on the U3 I2C node. That means they 341 * do not have an entry with number of interrupts nor the 342 * entry of the interrupt parent handle. 343 * We define an interrupt and hardwire it to the /u3/mpic 344 * handle. 345 */ 346 347 if (OF_getprop(child, "name", name, sizeof(name)) <= 0) 348 device_printf(dev, "device has no name!\n"); 349 if (dinfo->udi_ninterrupts == 0 && 350 (strcmp(name, "i2c-bus") == 0 || 351 strcmp(name, "i2c") == 0)) { 352 if (OF_getprop(child, "interrupt-parent", &iparent, 353 sizeof(iparent)) <= 0) { 354 iparent = OF_finddevice("/u3/mpic"); 355 device_printf(dev, "Set /u3/mpic as iparent!\n"); 356 } 357 /* Add an interrupt number 0 to the parent. */ 358 irq = MAP_IRQ(iparent, 0); 359 resource_list_add(&dinfo->udi_resources, SYS_RES_IRQ, 360 dinfo->udi_ninterrupts, irq, irq, 1); 361 dinfo->udi_interrupts[dinfo->udi_ninterrupts] = irq; 362 dinfo->udi_ninterrupts++; 363 } 364 365 unin_chip_add_reg(child, dinfo); 366 367 cdev = device_add_child(dev, NULL, -1); 368 if (cdev == NULL) { 369 device_printf(dev, "<%s>: device_add_child failed\n", 370 dinfo->udi_obdinfo.obd_name); 371 resource_list_free(&dinfo->udi_resources); 372 ofw_bus_gen_destroy_devinfo(&dinfo->udi_obdinfo); 373 free(dinfo, M_UNIN); 374 continue; 375 } 376 377 device_set_ivars(cdev, dinfo); 378 } 379 380 /* 381 * Only map the first page, since that is where the registers 382 * of interest lie. 383 */ 384 sc->sc_addr = (vm_offset_t)pmap_mapdev(sc->sc_physaddr, PAGE_SIZE); 385 386 sc->sc_version = *(u_int *)sc->sc_addr; 387 device_printf(dev, "Version %d\n", sc->sc_version); 388 389 /* 390 * Enable the GMAC Ethernet cell and the integrated OpenPIC 391 * if Open Firmware says they are used. 392 */ 393 for (child = OF_child(root); child; child = OF_peer(child)) { 394 memset(compat, 0, sizeof(compat)); 395 OF_getprop(child, "compatible", compat, sizeof(compat)); 396 if (strcmp(compat, "gmac") == 0) 397 unin_enable_gmac(dev); 398 if (strcmp(compat, "chrp,open-pic") == 0) 399 unin_enable_mpic(dev); 400 } 401 402 /* 403 * GMAC lives under the PCI bus, so just check if enet is gmac. 404 */ 405 child = OF_finddevice("enet"); 406 memset(compat, 0, sizeof(compat)); 407 OF_getprop(child, "compatible", compat, sizeof(compat)); 408 if (strcmp(compat, "gmac") == 0) 409 unin_enable_gmac(dev); 410 411 return (bus_generic_attach(dev)); 412 } 413 414 static int 415 unin_chip_print_child(device_t dev, device_t child) 416 { 417 struct unin_chip_devinfo *dinfo; 418 struct resource_list *rl; 419 int retval = 0; 420 421 dinfo = device_get_ivars(child); 422 rl = &dinfo->udi_resources; 423 424 retval += bus_print_child_header(dev, child); 425 426 retval += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#jx"); 427 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%jd"); 428 429 retval += bus_print_child_footer(dev, child); 430 431 return (retval); 432 } 433 434 static void 435 unin_chip_probe_nomatch(device_t dev, device_t child) 436 { 437 struct unin_chip_devinfo *dinfo; 438 struct resource_list *rl; 439 const char *type; 440 441 if (bootverbose) { 442 dinfo = device_get_ivars(child); 443 rl = &dinfo->udi_resources; 444 445 if ((type = ofw_bus_get_type(child)) == NULL) 446 type = "(unknown)"; 447 device_printf(dev, "<%s, %s>", type, ofw_bus_get_name(child)); 448 resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#jx"); 449 resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%jd"); 450 printf(" (no driver attached)\n"); 451 } 452 } 453 454 static struct resource * 455 unin_chip_alloc_resource(device_t bus, device_t child, int type, int *rid, 456 rman_res_t start, rman_res_t end, rman_res_t count, 457 u_int flags) 458 { 459 struct unin_chip_softc *sc; 460 int needactivate; 461 struct resource *rv; 462 struct rman *rm; 463 u_long adjstart, adjend, adjcount; 464 struct unin_chip_devinfo *dinfo; 465 struct resource_list_entry *rle; 466 467 sc = device_get_softc(bus); 468 dinfo = device_get_ivars(child); 469 470 needactivate = flags & RF_ACTIVE; 471 flags &= ~RF_ACTIVE; 472 473 switch (type) { 474 case SYS_RES_MEMORY: 475 case SYS_RES_IOPORT: 476 rle = resource_list_find(&dinfo->udi_resources, SYS_RES_MEMORY, 477 *rid); 478 if (rle == NULL) { 479 device_printf(bus, "no rle for %s memory %d\n", 480 device_get_nameunit(child), *rid); 481 return (NULL); 482 } 483 484 rle->end = rle->end - 1; /* Hack? */ 485 486 if (start < rle->start) 487 adjstart = rle->start; 488 else if (start > rle->end) 489 adjstart = rle->end; 490 else 491 adjstart = start; 492 493 if (end < rle->start) 494 adjend = rle->start; 495 else if (end > rle->end) 496 adjend = rle->end; 497 else 498 adjend = end; 499 500 adjcount = adjend - adjstart; 501 502 rm = &sc->sc_mem_rman; 503 break; 504 505 case SYS_RES_IRQ: 506 /* Check for passthrough from subattachments. */ 507 if (device_get_parent(child) != bus) 508 return BUS_ALLOC_RESOURCE(device_get_parent(bus), child, 509 type, rid, start, end, count, 510 flags); 511 512 rle = resource_list_find(&dinfo->udi_resources, SYS_RES_IRQ, 513 *rid); 514 if (rle == NULL) { 515 if (dinfo->udi_ninterrupts >= 6) { 516 device_printf(bus, 517 "%s has more than 6 interrupts\n", 518 device_get_nameunit(child)); 519 return (NULL); 520 } 521 resource_list_add(&dinfo->udi_resources, SYS_RES_IRQ, 522 dinfo->udi_ninterrupts, start, start, 523 1); 524 525 dinfo->udi_interrupts[dinfo->udi_ninterrupts] = start; 526 dinfo->udi_ninterrupts++; 527 } 528 529 return (resource_list_alloc(&dinfo->udi_resources, bus, child, 530 type, rid, start, end, count, 531 flags)); 532 default: 533 device_printf(bus, "unknown resource request from %s\n", 534 device_get_nameunit(child)); 535 return (NULL); 536 } 537 538 rv = rman_reserve_resource(rm, adjstart, adjend, adjcount, flags, 539 child); 540 if (rv == NULL) { 541 device_printf(bus, 542 "failed to reserve resource %#lx - %#lx (%#lx)" 543 " for %s\n", adjstart, adjend, adjcount, 544 device_get_nameunit(child)); 545 return (NULL); 546 } 547 548 rman_set_rid(rv, *rid); 549 550 if (needactivate) { 551 if (bus_activate_resource(child, type, *rid, rv) != 0) { 552 device_printf(bus, 553 "failed to activate resource for %s\n", 554 device_get_nameunit(child)); 555 rman_release_resource(rv); 556 return (NULL); 557 } 558 } 559 560 return (rv); 561 } 562 563 static int 564 unin_chip_release_resource(device_t bus, device_t child, int type, int rid, 565 struct resource *res) 566 { 567 if (rman_get_flags(res) & RF_ACTIVE) { 568 int error = bus_deactivate_resource(child, type, rid, res); 569 if (error) 570 return error; 571 } 572 573 return (rman_release_resource(res)); 574 } 575 576 static int 577 unin_chip_activate_resource(device_t bus, device_t child, int type, int rid, 578 struct resource *res) 579 { 580 void *p; 581 582 if (type == SYS_RES_IRQ) 583 return (bus_activate_resource(bus, type, rid, res)); 584 585 if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) { 586 vm_offset_t start; 587 588 start = (vm_offset_t) rman_get_start(res); 589 590 if (bootverbose) 591 printf("unin mapdev: start %zx, len %jd\n", start, 592 rman_get_size(res)); 593 594 p = pmap_mapdev(start, (vm_size_t) rman_get_size(res)); 595 if (p == NULL) 596 return (ENOMEM); 597 rman_set_virtual(res, p); 598 rman_set_bustag(res, &bs_be_tag); 599 rman_set_bushandle(res, (u_long)p); 600 } 601 602 return (rman_activate_resource(res)); 603 } 604 605 static int 606 unin_chip_deactivate_resource(device_t bus, device_t child, int type, int rid, 607 struct resource *res) 608 { 609 /* 610 * If this is a memory resource, unmap it. 611 */ 612 if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) { 613 u_int32_t psize; 614 615 psize = rman_get_size(res); 616 pmap_unmapdev(rman_get_virtual(res), psize); 617 } 618 619 return (rman_deactivate_resource(res)); 620 } 621 622 static struct resource_list * 623 unin_chip_get_resource_list (device_t dev, device_t child) 624 { 625 struct unin_chip_devinfo *dinfo; 626 627 dinfo = device_get_ivars(child); 628 return (&dinfo->udi_resources); 629 } 630 631 static const struct ofw_bus_devinfo * 632 unin_chip_get_devinfo(device_t dev, device_t child) 633 { 634 struct unin_chip_devinfo *dinfo; 635 636 dinfo = device_get_ivars(child); 637 return (&dinfo->udi_obdinfo); 638 } 639 640 int 641 unin_chip_wake(device_t dev) 642 { 643 644 if (dev == NULL) 645 dev = unin_chip; 646 unin_update_reg(dev, UNIN_PWR_MGMT, UNIN_PWR_NORMAL, UNIN_PWR_MASK); 647 DELAY(10); 648 unin_update_reg(dev, UNIN_HWINIT_STATE, UNIN_RUNNING, 0); 649 DELAY(100); 650 651 return (0); 652 } 653 654 int 655 unin_chip_sleep(device_t dev, int idle) 656 { 657 if (dev == NULL) 658 dev = unin_chip; 659 660 unin_update_reg(dev, UNIN_HWINIT_STATE, UNIN_SLEEPING, 0); 661 DELAY(10); 662 if (idle) 663 unin_update_reg(dev, UNIN_PWR_MGMT, UNIN_PWR_IDLE2, UNIN_PWR_MASK); 664 else 665 unin_update_reg(dev, UNIN_PWR_MGMT, UNIN_PWR_SLEEP, UNIN_PWR_MASK); 666 DELAY(10); 667 668 return (0); 669 }
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