1 /* 2 * PowerMac MacIO device emulation 3 * 4 * Copyright (c) 2005-2007 Fabrice Bellard 5 * Copyright (c) 2007 Jocelyn Mayer 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a copy 8 * of this software and associated documentation files (the "Software"), to deal 9 * in the Software without restriction, including without limitation the rights 10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 11 * copies of the Software, and to permit persons to whom the Software is 12 * furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included in 15 * all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 23 * THE SOFTWARE. 24 */ 25 #include "qemu/osdep.h" 26 #include "qapi/error.h" 27 #include "hw/hw.h" 28 #include "hw/ppc/mac.h" 29 #include "hw/pci/pci.h" 30 #include "hw/ppc/mac_dbdma.h" 31 #include "hw/char/escc.h" 32 33 #define TYPE_MACIO "macio" 34 #define MACIO(obj) OBJECT_CHECK(MacIOState, (obj), TYPE_MACIO) 35 36 typedef struct MacIOState 37 { 38 /*< private >*/ 39 PCIDevice parent; 40 /*< public >*/ 41 42 MemoryRegion bar; 43 CUDAState cuda; 44 void *dbdma; 45 MemoryRegion *pic_mem; 46 MemoryRegion *escc_mem; 47 uint64_t frequency; 48 } MacIOState; 49 50 #define OLDWORLD_MACIO(obj) \ 51 OBJECT_CHECK(OldWorldMacIOState, (obj), TYPE_OLDWORLD_MACIO) 52 53 typedef struct OldWorldMacIOState { 54 /*< private >*/ 55 MacIOState parent_obj; 56 /*< public >*/ 57 58 qemu_irq irqs[5]; 59 60 MacIONVRAMState nvram; 61 MACIOIDEState ide[2]; 62 } OldWorldMacIOState; 63 64 #define NEWWORLD_MACIO(obj) \ 65 OBJECT_CHECK(NewWorldMacIOState, (obj), TYPE_NEWWORLD_MACIO) 66 67 typedef struct NewWorldMacIOState { 68 /*< private >*/ 69 MacIOState parent_obj; 70 /*< public >*/ 71 qemu_irq irqs[5]; 72 MACIOIDEState ide[2]; 73 } NewWorldMacIOState; 74 75 /* 76 * The mac-io has two interfaces to the ESCC. One is called "escc-legacy", 77 * while the other one is the normal, current ESCC interface. 78 * 79 * The magic below creates memory aliases to spawn the escc-legacy device 80 * purely by rerouting the respective registers to our escc region. This 81 * works because the only difference between the two memory regions is the 82 * register layout, not their semantics. 83 * 84 * Reference: ftp://ftp.software.ibm.com/rs6000/technology/spec/chrp/inwork/CHRP_IORef_1.0.pdf 85 */ 86 static void macio_escc_legacy_setup(MacIOState *macio_state) 87 { 88 MemoryRegion *escc_legacy = g_new(MemoryRegion, 1); 89 MemoryRegion *bar = &macio_state->bar; 90 int i; 91 static const int maps[] = { 92 0x00, 0x00, 93 0x02, 0x20, 94 0x04, 0x10, 95 0x06, 0x30, 96 0x08, 0x40, 97 0x0A, 0x50, 98 0x60, 0x60, 99 0x70, 0x70, 100 0x80, 0x70, 101 0x90, 0x80, 102 0xA0, 0x90, 103 0xB0, 0xA0, 104 0xC0, 0xB0, 105 0xD0, 0xC0, 106 0xE0, 0xD0, 107 0xF0, 0xE0, 108 }; 109 110 memory_region_init(escc_legacy, OBJECT(macio_state), "escc-legacy", 256); 111 for (i = 0; i < ARRAY_SIZE(maps); i += 2) { 112 MemoryRegion *port = g_new(MemoryRegion, 1); 113 memory_region_init_alias(port, OBJECT(macio_state), "escc-legacy-port", 114 macio_state->escc_mem, maps[i+1], 0x2); 115 memory_region_add_subregion(escc_legacy, maps[i], port); 116 } 117 118 memory_region_add_subregion(bar, 0x12000, escc_legacy); 119 } 120 121 static void macio_bar_setup(MacIOState *macio_state) 122 { 123 MemoryRegion *bar = &macio_state->bar; 124 125 if (macio_state->escc_mem) { 126 memory_region_add_subregion(bar, 0x13000, macio_state->escc_mem); 127 macio_escc_legacy_setup(macio_state); 128 } 129 } 130 131 static void macio_common_realize(PCIDevice *d, Error **errp) 132 { 133 MacIOState *s = MACIO(d); 134 SysBusDevice *sysbus_dev; 135 Error *err = NULL; 136 MemoryRegion *dbdma_mem; 137 138 s->dbdma = DBDMA_init(&dbdma_mem); 139 memory_region_add_subregion(&s->bar, 0x08000, dbdma_mem); 140 141 object_property_set_bool(OBJECT(&s->cuda), true, "realized", &err); 142 if (err) { 143 error_propagate(errp, err); 144 return; 145 } 146 sysbus_dev = SYS_BUS_DEVICE(&s->cuda); 147 memory_region_add_subregion(&s->bar, 0x16000, 148 sysbus_mmio_get_region(sysbus_dev, 0)); 149 150 macio_bar_setup(s); 151 pci_register_bar(d, 0, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar); 152 } 153 154 static void macio_realize_ide(MacIOState *s, MACIOIDEState *ide, 155 qemu_irq irq0, qemu_irq irq1, int dmaid, 156 Error **errp) 157 { 158 SysBusDevice *sysbus_dev; 159 160 sysbus_dev = SYS_BUS_DEVICE(ide); 161 sysbus_connect_irq(sysbus_dev, 0, irq0); 162 sysbus_connect_irq(sysbus_dev, 1, irq1); 163 macio_ide_register_dma(ide, s->dbdma, dmaid); 164 object_property_set_bool(OBJECT(ide), true, "realized", errp); 165 } 166 167 static void macio_oldworld_realize(PCIDevice *d, Error **errp) 168 { 169 MacIOState *s = MACIO(d); 170 OldWorldMacIOState *os = OLDWORLD_MACIO(d); 171 Error *err = NULL; 172 SysBusDevice *sysbus_dev; 173 int i; 174 int cur_irq = 0; 175 176 macio_common_realize(d, &err); 177 if (err) { 178 error_propagate(errp, err); 179 return; 180 } 181 182 sysbus_dev = SYS_BUS_DEVICE(&s->cuda); 183 sysbus_connect_irq(sysbus_dev, 0, os->irqs[cur_irq++]); 184 185 object_property_set_bool(OBJECT(&os->nvram), true, "realized", &err); 186 if (err) { 187 error_propagate(errp, err); 188 return; 189 } 190 sysbus_dev = SYS_BUS_DEVICE(&os->nvram); 191 memory_region_add_subregion(&s->bar, 0x60000, 192 sysbus_mmio_get_region(sysbus_dev, 0)); 193 pmac_format_nvram_partition(&os->nvram, os->nvram.size); 194 195 if (s->pic_mem) { 196 /* Heathrow PIC */ 197 memory_region_add_subregion(&s->bar, 0x00000, s->pic_mem); 198 } 199 200 /* IDE buses */ 201 for (i = 0; i < ARRAY_SIZE(os->ide); i++) { 202 qemu_irq irq0 = os->irqs[cur_irq++]; 203 qemu_irq irq1 = os->irqs[cur_irq++]; 204 205 macio_realize_ide(s, &os->ide[i], irq0, irq1, 0x16 + (i * 4), &err); 206 if (err) { 207 error_propagate(errp, err); 208 return; 209 } 210 } 211 } 212 213 static void macio_init_ide(MacIOState *s, MACIOIDEState *ide, size_t ide_size, 214 int index) 215 { 216 gchar *name; 217 218 object_initialize(ide, ide_size, TYPE_MACIO_IDE); 219 qdev_set_parent_bus(DEVICE(ide), sysbus_get_default()); 220 memory_region_add_subregion(&s->bar, 0x1f000 + ((index + 1) * 0x1000), 221 &ide->mem); 222 name = g_strdup_printf("ide[%i]", index); 223 object_property_add_child(OBJECT(s), name, OBJECT(ide), NULL); 224 g_free(name); 225 } 226 227 static void macio_oldworld_init(Object *obj) 228 { 229 MacIOState *s = MACIO(obj); 230 OldWorldMacIOState *os = OLDWORLD_MACIO(obj); 231 DeviceState *dev; 232 int i; 233 234 qdev_init_gpio_out(DEVICE(obj), os->irqs, ARRAY_SIZE(os->irqs)); 235 236 object_initialize(&os->nvram, sizeof(os->nvram), TYPE_MACIO_NVRAM); 237 dev = DEVICE(&os->nvram); 238 qdev_prop_set_uint32(dev, "size", 0x2000); 239 qdev_prop_set_uint32(dev, "it_shift", 4); 240 241 for (i = 0; i < 2; i++) { 242 macio_init_ide(s, &os->ide[i], sizeof(os->ide[i]), i); 243 } 244 } 245 246 static void timer_write(void *opaque, hwaddr addr, uint64_t value, 247 unsigned size) 248 { 249 } 250 251 static uint64_t timer_read(void *opaque, hwaddr addr, unsigned size) 252 { 253 uint32_t value = 0; 254 uint64_t systime = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 255 uint64_t kltime; 256 257 kltime = muldiv64(systime, 4194300, get_ticks_per_sec() * 4); 258 kltime = muldiv64(kltime, 18432000, 1048575); 259 260 switch (addr) { 261 case 0x38: 262 value = kltime; 263 break; 264 case 0x3c: 265 value = kltime >> 32; 266 break; 267 } 268 269 return value; 270 } 271 272 static const MemoryRegionOps timer_ops = { 273 .read = timer_read, 274 .write = timer_write, 275 .endianness = DEVICE_LITTLE_ENDIAN, 276 }; 277 278 static void macio_newworld_realize(PCIDevice *d, Error **errp) 279 { 280 MacIOState *s = MACIO(d); 281 NewWorldMacIOState *ns = NEWWORLD_MACIO(d); 282 Error *err = NULL; 283 SysBusDevice *sysbus_dev; 284 MemoryRegion *timer_memory = NULL; 285 int i; 286 int cur_irq = 0; 287 288 macio_common_realize(d, &err); 289 if (err) { 290 error_propagate(errp, err); 291 return; 292 } 293 294 sysbus_dev = SYS_BUS_DEVICE(&s->cuda); 295 sysbus_connect_irq(sysbus_dev, 0, ns->irqs[cur_irq++]); 296 297 if (s->pic_mem) { 298 /* OpenPIC */ 299 memory_region_add_subregion(&s->bar, 0x40000, s->pic_mem); 300 } 301 302 /* IDE buses */ 303 for (i = 0; i < ARRAY_SIZE(ns->ide); i++) { 304 qemu_irq irq0 = ns->irqs[cur_irq++]; 305 qemu_irq irq1 = ns->irqs[cur_irq++]; 306 307 macio_realize_ide(s, &ns->ide[i], irq0, irq1, 0x16 + (i * 4), &err); 308 if (err) { 309 error_propagate(errp, err); 310 return; 311 } 312 } 313 314 /* Timer */ 315 timer_memory = g_new(MemoryRegion, 1); 316 memory_region_init_io(timer_memory, OBJECT(s), &timer_ops, NULL, "timer", 317 0x1000); 318 memory_region_add_subregion(&s->bar, 0x15000, timer_memory); 319 } 320 321 static void macio_newworld_init(Object *obj) 322 { 323 MacIOState *s = MACIO(obj); 324 NewWorldMacIOState *ns = NEWWORLD_MACIO(obj); 325 int i; 326 327 qdev_init_gpio_out(DEVICE(obj), ns->irqs, ARRAY_SIZE(ns->irqs)); 328 329 for (i = 0; i < 2; i++) { 330 macio_init_ide(s, &ns->ide[i], sizeof(ns->ide[i]), i); 331 } 332 } 333 334 static void macio_instance_init(Object *obj) 335 { 336 MacIOState *s = MACIO(obj); 337 338 memory_region_init(&s->bar, obj, "macio", 0x80000); 339 340 object_initialize(&s->cuda, sizeof(s->cuda), TYPE_CUDA); 341 qdev_set_parent_bus(DEVICE(&s->cuda), sysbus_get_default()); 342 object_property_add_child(obj, "cuda", OBJECT(&s->cuda), NULL); 343 } 344 345 static const VMStateDescription vmstate_macio_oldworld = { 346 .name = "macio-oldworld", 347 .version_id = 0, 348 .minimum_version_id = 0, 349 .fields = (VMStateField[]) { 350 VMSTATE_PCI_DEVICE(parent_obj.parent, OldWorldMacIOState), 351 VMSTATE_END_OF_LIST() 352 } 353 }; 354 355 static void macio_oldworld_class_init(ObjectClass *oc, void *data) 356 { 357 PCIDeviceClass *pdc = PCI_DEVICE_CLASS(oc); 358 DeviceClass *dc = DEVICE_CLASS(oc); 359 360 pdc->realize = macio_oldworld_realize; 361 pdc->device_id = PCI_DEVICE_ID_APPLE_343S1201; 362 dc->vmsd = &vmstate_macio_oldworld; 363 } 364 365 static const VMStateDescription vmstate_macio_newworld = { 366 .name = "macio-newworld", 367 .version_id = 0, 368 .minimum_version_id = 0, 369 .fields = (VMStateField[]) { 370 VMSTATE_PCI_DEVICE(parent_obj.parent, NewWorldMacIOState), 371 VMSTATE_END_OF_LIST() 372 } 373 }; 374 375 static void macio_newworld_class_init(ObjectClass *oc, void *data) 376 { 377 PCIDeviceClass *pdc = PCI_DEVICE_CLASS(oc); 378 DeviceClass *dc = DEVICE_CLASS(oc); 379 380 pdc->realize = macio_newworld_realize; 381 pdc->device_id = PCI_DEVICE_ID_APPLE_UNI_N_KEYL; 382 dc->vmsd = &vmstate_macio_newworld; 383 } 384 385 static Property macio_properties[] = { 386 DEFINE_PROP_UINT64("frequency", MacIOState, frequency, 0), 387 DEFINE_PROP_END_OF_LIST() 388 }; 389 390 static void macio_class_init(ObjectClass *klass, void *data) 391 { 392 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 393 DeviceClass *dc = DEVICE_CLASS(klass); 394 395 k->vendor_id = PCI_VENDOR_ID_APPLE; 396 k->class_id = PCI_CLASS_OTHERS << 8; 397 dc->props = macio_properties; 398 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); 399 } 400 401 static const TypeInfo macio_oldworld_type_info = { 402 .name = TYPE_OLDWORLD_MACIO, 403 .parent = TYPE_MACIO, 404 .instance_size = sizeof(OldWorldMacIOState), 405 .instance_init = macio_oldworld_init, 406 .class_init = macio_oldworld_class_init, 407 }; 408 409 static const TypeInfo macio_newworld_type_info = { 410 .name = TYPE_NEWWORLD_MACIO, 411 .parent = TYPE_MACIO, 412 .instance_size = sizeof(NewWorldMacIOState), 413 .instance_init = macio_newworld_init, 414 .class_init = macio_newworld_class_init, 415 }; 416 417 static const TypeInfo macio_type_info = { 418 .name = TYPE_MACIO, 419 .parent = TYPE_PCI_DEVICE, 420 .instance_size = sizeof(MacIOState), 421 .instance_init = macio_instance_init, 422 .abstract = true, 423 .class_init = macio_class_init, 424 }; 425 426 static void macio_register_types(void) 427 { 428 type_register_static(&macio_type_info); 429 type_register_static(&macio_oldworld_type_info); 430 type_register_static(&macio_newworld_type_info); 431 } 432 433 type_init(macio_register_types) 434 435 void macio_init(PCIDevice *d, 436 MemoryRegion *pic_mem, 437 MemoryRegion *escc_mem) 438 { 439 MacIOState *macio_state = MACIO(d); 440 441 macio_state->pic_mem = pic_mem; 442 macio_state->escc_mem = escc_mem; 443 /* Note: this code is strongly inspirated from the corresponding code 444 in PearPC */ 445 qdev_prop_set_uint64(DEVICE(&macio_state->cuda), "frequency", 446 macio_state->frequency); 447 448 qdev_init_nofail(DEVICE(d)); 449 } 450