28 */ 29 30/* 31 * Driver for KeyLargo/Pangea, the MacPPC south bridge ASIC. 32 */ 33 34#include <sys/param.h> 35#include <sys/systm.h> 36#include <sys/kernel.h> 37#include <sys/malloc.h> 38#include <sys/module.h> 39#include <sys/bus.h> 40#include <machine/bus.h> 41#include <sys/rman.h> 42 43#include <machine/vmparam.h> 44#include <vm/vm.h> 45#include <vm/pmap.h> 46#include <machine/pmap.h> 47 48#include <machine/resource.h> 49 50#include <dev/ofw/ofw_bus.h> 51#include <dev/ofw/ofw_bus_subr.h> 52#include <dev/ofw/openfirm.h> 53 54#include <powerpc/powermac/maciovar.h> 55 56#include <dev/pci/pcivar.h> 57#include <dev/pci/pcireg.h> 58 59/* 60 * Macio softc 61 */ 62struct macio_softc { 63 phandle_t sc_node; 64 vm_offset_t sc_base; 65 vm_offset_t sc_size; 66 struct rman sc_mem_rman; 67}; 68 69static MALLOC_DEFINE(M_MACIO, "macio", "macio device information"); 70 71static int macio_probe(device_t); 72static int macio_attach(device_t); 73static int macio_print_child(device_t dev, device_t child); 74static void macio_probe_nomatch(device_t, device_t); 75static struct resource *macio_alloc_resource(device_t, device_t, int, int *, 76 u_long, u_long, u_long, u_int); 77static int macio_activate_resource(device_t, device_t, int, int, 78 struct resource *); 79static int macio_deactivate_resource(device_t, device_t, int, int, 80 struct resource *); 81static int macio_release_resource(device_t, device_t, int, int, 82 struct resource *); 83static struct resource_list *macio_get_resource_list (device_t, device_t); 84static ofw_bus_get_devinfo_t macio_get_devinfo; 85 86/* 87 * Bus interface definition 88 */ 89static device_method_t macio_methods[] = { 90 /* Device interface */ 91 DEVMETHOD(device_probe, macio_probe), 92 DEVMETHOD(device_attach, macio_attach), 93 DEVMETHOD(device_detach, bus_generic_detach), 94 DEVMETHOD(device_shutdown, bus_generic_shutdown), 95 DEVMETHOD(device_suspend, bus_generic_suspend), 96 DEVMETHOD(device_resume, bus_generic_resume), 97 98 /* Bus interface */ 99 DEVMETHOD(bus_print_child, macio_print_child), 100 DEVMETHOD(bus_probe_nomatch, macio_probe_nomatch), 101 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 102 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 103 104 DEVMETHOD(bus_alloc_resource, macio_alloc_resource), 105 DEVMETHOD(bus_release_resource, macio_release_resource), 106 DEVMETHOD(bus_activate_resource, macio_activate_resource), 107 DEVMETHOD(bus_deactivate_resource, macio_deactivate_resource), 108 DEVMETHOD(bus_get_resource_list, macio_get_resource_list), 109 110 /* ofw_bus interface */ 111 DEVMETHOD(ofw_bus_get_devinfo, macio_get_devinfo), 112 DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat), 113 DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model), 114 DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name), 115 DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node), 116 DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type), 117 118 { 0, 0 } 119}; 120 121static driver_t macio_pci_driver = { 122 "macio", 123 macio_methods, 124 sizeof(struct macio_softc) 125}; 126 127devclass_t macio_devclass; 128 129DRIVER_MODULE(macio, pci, macio_pci_driver, macio_devclass, 0, 0); 130 131/* 132 * PCI ID search table 133 */ 134static struct macio_pci_dev { 135 u_int32_t mpd_devid; 136 char *mpd_desc; 137} macio_pci_devlist[] = { 138 { 0x0017106b, "Paddington I/O Controller" }, 139 { 0x0022106b, "KeyLargo I/O Controller" }, 140 { 0x0025106b, "Pangea I/O Controller" }, 141 { 0x003e106b, "Intrepid I/O Controller" }, 142 { 0, NULL } 143}; 144 145/* 146 * Devices to exclude from the probe 147 * XXX some of these may be required in the future... 148 */ 149#define MACIO_QUIRK_IGNORE 0x00000001 150#define MACIO_QUIRK_CHILD_HAS_INTR 0x00000002 151 152struct macio_quirk_entry { 153 const char *mq_name; 154 int mq_quirks; 155}; 156 157static struct macio_quirk_entry macio_quirks[] = { 158 { "escc-legacy", MACIO_QUIRK_IGNORE }, 159 { "timer", MACIO_QUIRK_IGNORE }, 160 { "escc", MACIO_QUIRK_CHILD_HAS_INTR }, 161 { NULL, 0 } 162}; 163 164static int 165macio_get_quirks(const char *name) 166{ 167 struct macio_quirk_entry *mqe; 168 169 for (mqe = macio_quirks; mqe->mq_name != NULL; mqe++) 170 if (strcmp(name, mqe->mq_name) == 0) 171 return (mqe->mq_quirks); 172 return (0); 173} 174 175 176/* 177 * Add an interrupt to the dev's resource list if present 178 */ 179static void 180macio_add_intr(phandle_t devnode, struct macio_devinfo *dinfo) 181{ 182 int intr; 183 184 if (dinfo->mdi_ninterrupts >= 5) { 185 printf("macio: device has more than 5 interrupts\n"); 186 return; 187 } 188 189 if (OF_getprop(devnode, "interrupts", &intr, sizeof(intr)) == -1) { 190 if (OF_getprop(devnode, "AAPL,interrupts", &intr, 191 sizeof(intr)) == -1) 192 return; 193 } 194 195 if (intr == -1) 196 return; 197 198 resource_list_add(&dinfo->mdi_resources, SYS_RES_IRQ, 199 dinfo->mdi_ninterrupts, intr, intr, 1); 200 201 dinfo->mdi_interrupts[dinfo->mdi_ninterrupts] = intr; 202 dinfo->mdi_ninterrupts++; 203} 204 205 206static void 207macio_add_reg(phandle_t devnode, struct macio_devinfo *dinfo) 208{ 209 struct macio_reg *reg; 210 int i, nreg; 211 212 nreg = OF_getprop_alloc(devnode, "reg", sizeof(*reg), (void **)®); 213 if (nreg == -1) 214 return; 215 216 for (i = 0; i < nreg; i++) { 217 resource_list_add(&dinfo->mdi_resources, SYS_RES_MEMORY, i, 218 reg[i].mr_base, reg[i].mr_base + reg[i].mr_size, 219 reg[i].mr_size); 220 } 221} 222 223/* 224 * PCI probe 225 */ 226static int 227macio_probe(device_t dev) 228{ 229 int i; 230 u_int32_t devid; 231 232 devid = pci_get_devid(dev); 233 for (i = 0; macio_pci_devlist[i].mpd_desc != NULL; i++) { 234 if (devid == macio_pci_devlist[i].mpd_devid) { 235 device_set_desc(dev, macio_pci_devlist[i].mpd_desc); 236 return (0); 237 } 238 } 239 240 return (ENXIO); 241} 242 243/* 244 * PCI attach: scan Open Firmware child nodes, and attach these as children 245 * of the macio bus 246 */ 247static int 248macio_attach(device_t dev) 249{ 250 struct macio_softc *sc; 251 struct macio_devinfo *dinfo; 252 phandle_t root; 253 phandle_t child; 254 phandle_t subchild; 255 device_t cdev; 256 u_int reg[3]; 257 int quirks; 258 259 sc = device_get_softc(dev); 260 root = sc->sc_node = OF_finddevice("mac-io"); 261 262 /* 263 * Locate the device node and it's base address 264 */ 265 if (OF_getprop(root, "assigned-addresses", 266 reg, sizeof(reg)) < sizeof(reg)) { 267 return (ENXIO); 268 } 269 270 sc->sc_base = reg[2]; 271 sc->sc_size = MACIO_REG_SIZE; 272 273 sc->sc_mem_rman.rm_type = RMAN_ARRAY; 274 sc->sc_mem_rman.rm_descr = "MacIO Device Memory"; 275 if (rman_init(&sc->sc_mem_rman) != 0) { 276 device_printf(dev, 277 "failed to init mem range resources\n"); 278 return (ENXIO); 279 } 280 rman_manage_region(&sc->sc_mem_rman, 0, sc->sc_size); 281 282 /* 283 * Iterate through the sub-devices 284 */ 285 for (child = OF_child(root); child != 0; child = OF_peer(child)) { 286 dinfo = malloc(sizeof(*dinfo), M_MACIO, M_WAITOK | M_ZERO); 287 if (ofw_bus_gen_setup_devinfo(&dinfo->mdi_obdinfo, child) != 288 0) { 289 free(dinfo, M_MACIO); 290 continue; 291 } 292 quirks = macio_get_quirks(dinfo->mdi_obdinfo.obd_name); 293 if ((quirks & MACIO_QUIRK_IGNORE) != 0) { 294 ofw_bus_gen_destroy_devinfo(&dinfo->mdi_obdinfo); 295 free(dinfo, M_MACIO); 296 continue; 297 } 298 resource_list_init(&dinfo->mdi_resources); 299 dinfo->mdi_ninterrupts = 0; 300 macio_add_intr(child, dinfo); 301 macio_add_reg(child, dinfo); 302 if ((quirks & MACIO_QUIRK_CHILD_HAS_INTR) != 0) 303 for (subchild = OF_child(child); subchild != 0; 304 subchild = OF_peer(subchild)) 305 macio_add_intr(subchild, dinfo); 306 cdev = device_add_child(dev, NULL, -1); 307 if (cdev == NULL) { 308 device_printf(dev, "<%s>: device_add_child failed\n", 309 dinfo->mdi_obdinfo.obd_name); 310 resource_list_free(&dinfo->mdi_resources); 311 ofw_bus_gen_destroy_devinfo(&dinfo->mdi_obdinfo); 312 free(dinfo, M_MACIO); 313 continue; 314 } 315 device_set_ivars(cdev, dinfo); 316 } 317 318 return (bus_generic_attach(dev)); 319} 320 321 322static int 323macio_print_child(device_t dev, device_t child) 324{ 325 struct macio_devinfo *dinfo; 326 struct resource_list *rl; 327 int retval = 0; 328 329 dinfo = device_get_ivars(child); 330 rl = &dinfo->mdi_resources; 331 332 retval += bus_print_child_header(dev, child); 333 334 retval += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx"); 335 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld"); 336 337 retval += bus_print_child_footer(dev, child); 338 339 return (retval); 340} 341 342 343static void 344macio_probe_nomatch(device_t dev, device_t child) 345{ 346 struct macio_devinfo *dinfo; 347 struct resource_list *rl; 348 const char *type; 349 350 if (bootverbose) { 351 dinfo = device_get_ivars(child); 352 rl = &dinfo->mdi_resources; 353 354 if ((type = ofw_bus_get_type(child)) == NULL) 355 type = "(unknown)"; 356 device_printf(dev, "<%s, %s>", type, ofw_bus_get_name(child)); 357 resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx"); 358 resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld"); 359 printf(" (no driver attached)\n"); 360 } 361} 362 363 364static struct resource * 365macio_alloc_resource(device_t bus, device_t child, int type, int *rid, 366 u_long start, u_long end, u_long count, u_int flags) 367{ 368 struct macio_softc *sc; 369 int needactivate; 370 struct resource *rv; 371 struct rman *rm;
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449 rman_set_bushandle(rv, rman_get_start(rv)); 450 451 if (needactivate) { 452 if (bus_activate_resource(child, type, *rid, rv) != 0) { 453 device_printf(bus, 454 "failed to activate resource for %s\n", 455 device_get_nameunit(child)); 456 rman_release_resource(rv); 457 return (NULL); 458 } 459 } 460 461 return (rv); 462} 463 464 465static int 466macio_release_resource(device_t bus, device_t child, int type, int rid, 467 struct resource *res) 468{ 469 if (rman_get_flags(res) & RF_ACTIVE) { 470 int error = bus_deactivate_resource(child, type, rid, res); 471 if (error) 472 return error; 473 } 474 475 return (rman_release_resource(res)); 476} 477 478 479static int 480macio_activate_resource(device_t bus, device_t child, int type, int rid, 481 struct resource *res) 482{ 483 struct macio_softc *sc; 484 void *p; 485 486 sc = device_get_softc(bus); 487 488 if (type == SYS_RES_IRQ) 489 return (bus_activate_resource(bus, type, rid, res)); 490 491 if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) { 492 p = pmap_mapdev((vm_offset_t)rman_get_start(res) + sc->sc_base, 493 (vm_size_t)rman_get_size(res)); 494 if (p == NULL) 495 return (ENOMEM); 496 rman_set_virtual(res, p); 497 rman_set_bushandle(res, (u_long)p); 498 } 499 500 return (rman_activate_resource(res)); 501} 502 503 504static int 505macio_deactivate_resource(device_t bus, device_t child, int type, int rid, 506 struct resource *res) 507{ 508 /* 509 * If this is a memory resource, unmap it. 510 */ 511 if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) { 512 u_int32_t psize; 513 514 psize = rman_get_size(res); 515 pmap_unmapdev((vm_offset_t)rman_get_virtual(res), psize); 516 } 517 518 return (rman_deactivate_resource(res)); 519} 520 521 522static struct resource_list * 523macio_get_resource_list (device_t dev, device_t child) 524{ 525 struct macio_devinfo *dinfo; 526 527 dinfo = device_get_ivars(child); 528 return (&dinfo->mdi_resources); 529} 530 531static const struct ofw_bus_devinfo * 532macio_get_devinfo(device_t dev, device_t child) 533{ 534 struct macio_devinfo *dinfo; 535 536 dinfo = device_get_ivars(child); 537 return (&dinfo->mdi_obdinfo); 538}
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