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, /* Command B */ 93 0x02, 0x20, /* Command A */ 94 0x04, 0x10, /* Data B */ 95 0x06, 0x30, /* Data A */ 96 0x08, 0x40, /* Enhancement B */ 97 0x0A, 0x50, /* Enhancement A */ 98 0x80, 0x80, /* Recovery count */ 99 0x90, 0x90, /* Start A */ 100 0xa0, 0xa0, /* Start B */ 101 0xb0, 0xb0, /* Detect AB */ 102 }; 103 104 memory_region_init(escc_legacy, OBJECT(macio_state), "escc-legacy", 256); 105 for (i = 0; i < ARRAY_SIZE(maps); i += 2) { 106 MemoryRegion *port = g_new(MemoryRegion, 1); 107 memory_region_init_alias(port, OBJECT(macio_state), "escc-legacy-port", 108 macio_state->escc_mem, maps[i+1], 0x2); 109 memory_region_add_subregion(escc_legacy, maps[i], port); 110 } 111 112 memory_region_add_subregion(bar, 0x12000, escc_legacy); 113 } 114 115 static void macio_bar_setup(MacIOState *macio_state) 116 { 117 MemoryRegion *bar = &macio_state->bar; 118 119 if (macio_state->escc_mem) { 120 memory_region_add_subregion(bar, 0x13000, macio_state->escc_mem); 121 macio_escc_legacy_setup(macio_state); 122 } 123 } 124 125 static void macio_common_realize(PCIDevice *d, Error **errp) 126 { 127 MacIOState *s = MACIO(d); 128 SysBusDevice *sysbus_dev; 129 Error *err = NULL; 130 MemoryRegion *dbdma_mem; 131 132 s->dbdma = DBDMA_init(&dbdma_mem); 133 memory_region_add_subregion(&s->bar, 0x08000, dbdma_mem); 134 135 object_property_set_bool(OBJECT(&s->cuda), true, "realized", &err); 136 if (err) { 137 error_propagate(errp, err); 138 return; 139 } 140 sysbus_dev = SYS_BUS_DEVICE(&s->cuda); 141 memory_region_add_subregion(&s->bar, 0x16000, 142 sysbus_mmio_get_region(sysbus_dev, 0)); 143 144 macio_bar_setup(s); 145 pci_register_bar(d, 0, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar); 146 } 147 148 static void macio_realize_ide(MacIOState *s, MACIOIDEState *ide, 149 qemu_irq irq0, qemu_irq irq1, int dmaid, 150 Error **errp) 151 { 152 SysBusDevice *sysbus_dev; 153 154 sysbus_dev = SYS_BUS_DEVICE(ide); 155 sysbus_connect_irq(sysbus_dev, 0, irq0); 156 sysbus_connect_irq(sysbus_dev, 1, irq1); 157 macio_ide_register_dma(ide, s->dbdma, dmaid); 158 object_property_set_bool(OBJECT(ide), true, "realized", errp); 159 } 160 161 static void macio_oldworld_realize(PCIDevice *d, Error **errp) 162 { 163 MacIOState *s = MACIO(d); 164 OldWorldMacIOState *os = OLDWORLD_MACIO(d); 165 Error *err = NULL; 166 SysBusDevice *sysbus_dev; 167 int i; 168 int cur_irq = 0; 169 170 macio_common_realize(d, &err); 171 if (err) { 172 error_propagate(errp, err); 173 return; 174 } 175 176 sysbus_dev = SYS_BUS_DEVICE(&s->cuda); 177 sysbus_connect_irq(sysbus_dev, 0, os->irqs[cur_irq++]); 178 179 object_property_set_bool(OBJECT(&os->nvram), true, "realized", &err); 180 if (err) { 181 error_propagate(errp, err); 182 return; 183 } 184 sysbus_dev = SYS_BUS_DEVICE(&os->nvram); 185 memory_region_add_subregion(&s->bar, 0x60000, 186 sysbus_mmio_get_region(sysbus_dev, 0)); 187 pmac_format_nvram_partition(&os->nvram, os->nvram.size); 188 189 if (s->pic_mem) { 190 /* Heathrow PIC */ 191 memory_region_add_subregion(&s->bar, 0x00000, s->pic_mem); 192 } 193 194 /* IDE buses */ 195 for (i = 0; i < ARRAY_SIZE(os->ide); i++) { 196 qemu_irq irq0 = os->irqs[cur_irq++]; 197 qemu_irq irq1 = os->irqs[cur_irq++]; 198 199 macio_realize_ide(s, &os->ide[i], irq0, irq1, 0x16 + (i * 4), &err); 200 if (err) { 201 error_propagate(errp, err); 202 return; 203 } 204 } 205 } 206 207 static void macio_init_ide(MacIOState *s, MACIOIDEState *ide, size_t ide_size, 208 int index) 209 { 210 gchar *name; 211 212 object_initialize(ide, ide_size, TYPE_MACIO_IDE); 213 qdev_set_parent_bus(DEVICE(ide), sysbus_get_default()); 214 memory_region_add_subregion(&s->bar, 0x1f000 + ((index + 1) * 0x1000), 215 &ide->mem); 216 name = g_strdup_printf("ide[%i]", index); 217 object_property_add_child(OBJECT(s), name, OBJECT(ide), NULL); 218 g_free(name); 219 } 220 221 static void macio_oldworld_init(Object *obj) 222 { 223 MacIOState *s = MACIO(obj); 224 OldWorldMacIOState *os = OLDWORLD_MACIO(obj); 225 DeviceState *dev; 226 int i; 227 228 qdev_init_gpio_out(DEVICE(obj), os->irqs, ARRAY_SIZE(os->irqs)); 229 230 object_initialize(&os->nvram, sizeof(os->nvram), TYPE_MACIO_NVRAM); 231 dev = DEVICE(&os->nvram); 232 qdev_prop_set_uint32(dev, "size", 0x2000); 233 qdev_prop_set_uint32(dev, "it_shift", 4); 234 235 for (i = 0; i < 2; i++) { 236 macio_init_ide(s, &os->ide[i], sizeof(os->ide[i]), i); 237 } 238 } 239 240 static void timer_write(void *opaque, hwaddr addr, uint64_t value, 241 unsigned size) 242 { 243 } 244 245 static uint64_t timer_read(void *opaque, hwaddr addr, unsigned size) 246 { 247 uint32_t value = 0; 248 uint64_t systime = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 249 uint64_t kltime; 250 251 kltime = muldiv64(systime, 4194300, NANOSECONDS_PER_SECOND * 4); 252 kltime = muldiv64(kltime, 18432000, 1048575); 253 254 switch (addr) { 255 case 0x38: 256 value = kltime; 257 break; 258 case 0x3c: 259 value = kltime >> 32; 260 break; 261 } 262 263 return value; 264 } 265 266 static const MemoryRegionOps timer_ops = { 267 .read = timer_read, 268 .write = timer_write, 269 .endianness = DEVICE_LITTLE_ENDIAN, 270 }; 271 272 static void macio_newworld_realize(PCIDevice *d, Error **errp) 273 { 274 MacIOState *s = MACIO(d); 275 NewWorldMacIOState *ns = NEWWORLD_MACIO(d); 276 Error *err = NULL; 277 SysBusDevice *sysbus_dev; 278 MemoryRegion *timer_memory = NULL; 279 int i; 280 int cur_irq = 0; 281 282 macio_common_realize(d, &err); 283 if (err) { 284 error_propagate(errp, err); 285 return; 286 } 287 288 sysbus_dev = SYS_BUS_DEVICE(&s->cuda); 289 sysbus_connect_irq(sysbus_dev, 0, ns->irqs[cur_irq++]); 290 291 if (s->pic_mem) { 292 /* OpenPIC */ 293 memory_region_add_subregion(&s->bar, 0x40000, s->pic_mem); 294 } 295 296 /* IDE buses */ 297 for (i = 0; i < ARRAY_SIZE(ns->ide); i++) { 298 qemu_irq irq0 = ns->irqs[cur_irq++]; 299 qemu_irq irq1 = ns->irqs[cur_irq++]; 300 301 macio_realize_ide(s, &ns->ide[i], irq0, irq1, 0x16 + (i * 4), &err); 302 if (err) { 303 error_propagate(errp, err); 304 return; 305 } 306 } 307 308 /* Timer */ 309 timer_memory = g_new(MemoryRegion, 1); 310 memory_region_init_io(timer_memory, OBJECT(s), &timer_ops, NULL, "timer", 311 0x1000); 312 memory_region_add_subregion(&s->bar, 0x15000, timer_memory); 313 } 314 315 static void macio_newworld_init(Object *obj) 316 { 317 MacIOState *s = MACIO(obj); 318 NewWorldMacIOState *ns = NEWWORLD_MACIO(obj); 319 int i; 320 321 qdev_init_gpio_out(DEVICE(obj), ns->irqs, ARRAY_SIZE(ns->irqs)); 322 323 for (i = 0; i < 2; i++) { 324 macio_init_ide(s, &ns->ide[i], sizeof(ns->ide[i]), i); 325 } 326 } 327 328 static void macio_instance_init(Object *obj) 329 { 330 MacIOState *s = MACIO(obj); 331 332 memory_region_init(&s->bar, obj, "macio", 0x80000); 333 334 object_initialize(&s->cuda, sizeof(s->cuda), TYPE_CUDA); 335 qdev_set_parent_bus(DEVICE(&s->cuda), sysbus_get_default()); 336 object_property_add_child(obj, "cuda", OBJECT(&s->cuda), NULL); 337 } 338 339 static const VMStateDescription vmstate_macio_oldworld = { 340 .name = "macio-oldworld", 341 .version_id = 0, 342 .minimum_version_id = 0, 343 .fields = (VMStateField[]) { 344 VMSTATE_PCI_DEVICE(parent_obj.parent, OldWorldMacIOState), 345 VMSTATE_END_OF_LIST() 346 } 347 }; 348 349 static void macio_oldworld_class_init(ObjectClass *oc, void *data) 350 { 351 PCIDeviceClass *pdc = PCI_DEVICE_CLASS(oc); 352 DeviceClass *dc = DEVICE_CLASS(oc); 353 354 pdc->realize = macio_oldworld_realize; 355 pdc->device_id = PCI_DEVICE_ID_APPLE_343S1201; 356 dc->vmsd = &vmstate_macio_oldworld; 357 } 358 359 static const VMStateDescription vmstate_macio_newworld = { 360 .name = "macio-newworld", 361 .version_id = 0, 362 .minimum_version_id = 0, 363 .fields = (VMStateField[]) { 364 VMSTATE_PCI_DEVICE(parent_obj.parent, NewWorldMacIOState), 365 VMSTATE_END_OF_LIST() 366 } 367 }; 368 369 static void macio_newworld_class_init(ObjectClass *oc, void *data) 370 { 371 PCIDeviceClass *pdc = PCI_DEVICE_CLASS(oc); 372 DeviceClass *dc = DEVICE_CLASS(oc); 373 374 pdc->realize = macio_newworld_realize; 375 pdc->device_id = PCI_DEVICE_ID_APPLE_UNI_N_KEYL; 376 dc->vmsd = &vmstate_macio_newworld; 377 } 378 379 static Property macio_properties[] = { 380 DEFINE_PROP_UINT64("frequency", MacIOState, frequency, 0), 381 DEFINE_PROP_END_OF_LIST() 382 }; 383 384 static void macio_class_init(ObjectClass *klass, void *data) 385 { 386 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 387 DeviceClass *dc = DEVICE_CLASS(klass); 388 389 k->vendor_id = PCI_VENDOR_ID_APPLE; 390 k->class_id = PCI_CLASS_OTHERS << 8; 391 dc->props = macio_properties; 392 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); 393 } 394 395 static const TypeInfo macio_oldworld_type_info = { 396 .name = TYPE_OLDWORLD_MACIO, 397 .parent = TYPE_MACIO, 398 .instance_size = sizeof(OldWorldMacIOState), 399 .instance_init = macio_oldworld_init, 400 .class_init = macio_oldworld_class_init, 401 }; 402 403 static const TypeInfo macio_newworld_type_info = { 404 .name = TYPE_NEWWORLD_MACIO, 405 .parent = TYPE_MACIO, 406 .instance_size = sizeof(NewWorldMacIOState), 407 .instance_init = macio_newworld_init, 408 .class_init = macio_newworld_class_init, 409 }; 410 411 static const TypeInfo macio_type_info = { 412 .name = TYPE_MACIO, 413 .parent = TYPE_PCI_DEVICE, 414 .instance_size = sizeof(MacIOState), 415 .instance_init = macio_instance_init, 416 .abstract = true, 417 .class_init = macio_class_init, 418 }; 419 420 static void macio_register_types(void) 421 { 422 type_register_static(&macio_type_info); 423 type_register_static(&macio_oldworld_type_info); 424 type_register_static(&macio_newworld_type_info); 425 } 426 427 type_init(macio_register_types) 428 429 void macio_init(PCIDevice *d, 430 MemoryRegion *pic_mem, 431 MemoryRegion *escc_mem) 432 { 433 MacIOState *macio_state = MACIO(d); 434 435 macio_state->pic_mem = pic_mem; 436 macio_state->escc_mem = escc_mem; 437 /* Note: this code is strongly inspirated from the corresponding code 438 in PearPC */ 439 qdev_prop_set_uint64(DEVICE(&macio_state->cuda), "frequency", 440 macio_state->frequency); 441 442 qdev_init_nofail(DEVICE(d)); 443 } 444