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 "hw/hw.h" 26 #include "hw/ppc/mac.h" 27 #include "hw/pci/pci.h" 28 #include "hw/ppc/mac_dbdma.h" 29 #include "hw/char/escc.h" 30 31 #define TYPE_MACIO "macio" 32 #define MACIO(obj) OBJECT_CHECK(MacIOState, (obj), TYPE_MACIO) 33 34 typedef struct MacIOState 35 { 36 /*< private >*/ 37 PCIDevice parent; 38 /*< public >*/ 39 40 MemoryRegion bar; 41 CUDAState cuda; 42 void *dbdma; 43 MemoryRegion *pic_mem; 44 MemoryRegion *escc_mem; 45 } MacIOState; 46 47 #define OLDWORLD_MACIO(obj) \ 48 OBJECT_CHECK(OldWorldMacIOState, (obj), TYPE_OLDWORLD_MACIO) 49 50 typedef struct OldWorldMacIOState { 51 /*< private >*/ 52 MacIOState parent_obj; 53 /*< public >*/ 54 55 qemu_irq irqs[5]; 56 57 MacIONVRAMState nvram; 58 MACIOIDEState ide[2]; 59 } OldWorldMacIOState; 60 61 #define NEWWORLD_MACIO(obj) \ 62 OBJECT_CHECK(NewWorldMacIOState, (obj), TYPE_NEWWORLD_MACIO) 63 64 typedef struct NewWorldMacIOState { 65 /*< private >*/ 66 MacIOState parent_obj; 67 /*< public >*/ 68 qemu_irq irqs[5]; 69 MACIOIDEState ide[2]; 70 } NewWorldMacIOState; 71 72 /* 73 * The mac-io has two interfaces to the ESCC. One is called "escc-legacy", 74 * while the other one is the normal, current ESCC interface. 75 * 76 * The magic below creates memory aliases to spawn the escc-legacy device 77 * purely by rerouting the respective registers to our escc region. This 78 * works because the only difference between the two memory regions is the 79 * register layout, not their semantics. 80 * 81 * Reference: ftp://ftp.software.ibm.com/rs6000/technology/spec/chrp/inwork/CHRP_IORef_1.0.pdf 82 */ 83 static void macio_escc_legacy_setup(MacIOState *macio_state) 84 { 85 MemoryRegion *escc_legacy = g_new(MemoryRegion, 1); 86 MemoryRegion *bar = &macio_state->bar; 87 int i; 88 static const int maps[] = { 89 0x00, 0x00, 90 0x02, 0x20, 91 0x04, 0x10, 92 0x06, 0x30, 93 0x08, 0x40, 94 0x0A, 0x50, 95 0x60, 0x60, 96 0x70, 0x70, 97 0x80, 0x70, 98 0x90, 0x80, 99 0xA0, 0x90, 100 0xB0, 0xA0, 101 0xC0, 0xB0, 102 0xD0, 0xC0, 103 0xE0, 0xD0, 104 0xF0, 0xE0, 105 }; 106 107 memory_region_init(escc_legacy, NULL, "escc-legacy", 256); 108 for (i = 0; i < ARRAY_SIZE(maps); i += 2) { 109 MemoryRegion *port = g_new(MemoryRegion, 1); 110 memory_region_init_alias(port, NULL, "escc-legacy-port", 111 macio_state->escc_mem, maps[i+1], 0x2); 112 memory_region_add_subregion(escc_legacy, maps[i], port); 113 } 114 115 memory_region_add_subregion(bar, 0x12000, escc_legacy); 116 } 117 118 static void macio_bar_setup(MacIOState *macio_state) 119 { 120 MemoryRegion *bar = &macio_state->bar; 121 122 if (macio_state->escc_mem) { 123 memory_region_add_subregion(bar, 0x13000, macio_state->escc_mem); 124 macio_escc_legacy_setup(macio_state); 125 } 126 } 127 128 static int macio_common_initfn(PCIDevice *d) 129 { 130 MacIOState *s = MACIO(d); 131 SysBusDevice *sysbus_dev; 132 int ret; 133 134 d->config[0x3d] = 0x01; // interrupt on pin 1 135 136 ret = qdev_init(DEVICE(&s->cuda)); 137 if (ret < 0) { 138 return ret; 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 return 0; 148 } 149 150 static int macio_initfn_ide(MacIOState *s, MACIOIDEState *ide, qemu_irq irq0, 151 qemu_irq irq1, int dmaid) 152 { 153 SysBusDevice *sysbus_dev; 154 155 sysbus_dev = SYS_BUS_DEVICE(ide); 156 sysbus_connect_irq(sysbus_dev, 0, irq0); 157 sysbus_connect_irq(sysbus_dev, 1, irq1); 158 macio_ide_register_dma(ide, s->dbdma, dmaid); 159 return qdev_init(DEVICE(ide)); 160 } 161 162 static int macio_oldworld_initfn(PCIDevice *d) 163 { 164 MacIOState *s = MACIO(d); 165 OldWorldMacIOState *os = OLDWORLD_MACIO(d); 166 SysBusDevice *sysbus_dev; 167 int i; 168 int cur_irq = 0; 169 int ret = macio_common_initfn(d); 170 if (ret < 0) { 171 return ret; 172 } 173 174 sysbus_dev = SYS_BUS_DEVICE(&s->cuda); 175 sysbus_connect_irq(sysbus_dev, 0, os->irqs[cur_irq++]); 176 177 ret = qdev_init(DEVICE(&os->nvram)); 178 if (ret < 0) { 179 return ret; 180 } 181 sysbus_dev = SYS_BUS_DEVICE(&os->nvram); 182 memory_region_add_subregion(&s->bar, 0x60000, 183 sysbus_mmio_get_region(sysbus_dev, 0)); 184 pmac_format_nvram_partition(&os->nvram, os->nvram.size); 185 186 if (s->pic_mem) { 187 /* Heathrow PIC */ 188 memory_region_add_subregion(&s->bar, 0x00000, s->pic_mem); 189 } 190 191 /* IDE buses */ 192 for (i = 0; i < ARRAY_SIZE(os->ide); i++) { 193 qemu_irq irq0 = os->irqs[cur_irq++]; 194 qemu_irq irq1 = os->irqs[cur_irq++]; 195 196 ret = macio_initfn_ide(s, &os->ide[i], irq0, irq1, 0x16 + (i * 4)); 197 if (ret < 0) { 198 return ret; 199 } 200 } 201 202 return 0; 203 } 204 205 static void macio_init_ide(MacIOState *s, MACIOIDEState *ide, int index) 206 { 207 gchar *name; 208 209 object_initialize(ide, TYPE_MACIO_IDE); 210 qdev_set_parent_bus(DEVICE(ide), sysbus_get_default()); 211 memory_region_add_subregion(&s->bar, 0x1f000 + ((index + 1) * 0x1000), 212 &ide->mem); 213 name = g_strdup_printf("ide[%i]", index); 214 object_property_add_child(OBJECT(s), name, OBJECT(ide), NULL); 215 g_free(name); 216 } 217 218 static void macio_oldworld_init(Object *obj) 219 { 220 MacIOState *s = MACIO(obj); 221 OldWorldMacIOState *os = OLDWORLD_MACIO(obj); 222 DeviceState *dev; 223 int i; 224 225 qdev_init_gpio_out(DEVICE(obj), os->irqs, ARRAY_SIZE(os->irqs)); 226 227 object_initialize(&os->nvram, TYPE_MACIO_NVRAM); 228 dev = DEVICE(&os->nvram); 229 qdev_prop_set_uint32(dev, "size", 0x2000); 230 qdev_prop_set_uint32(dev, "it_shift", 4); 231 232 for (i = 0; i < 2; i++) { 233 macio_init_ide(s, &os->ide[i], i); 234 } 235 } 236 237 static void timer_write(void *opaque, hwaddr addr, uint64_t value, 238 unsigned size) 239 { 240 } 241 242 static uint64_t timer_read(void *opaque, hwaddr addr, unsigned size) 243 { 244 uint32_t value = 0; 245 246 switch (addr) { 247 case 0x38: 248 value = qemu_get_clock_ns(vm_clock); 249 break; 250 case 0x3c: 251 value = qemu_get_clock_ns(vm_clock) >> 32; 252 break; 253 } 254 255 return value; 256 } 257 258 static const MemoryRegionOps timer_ops = { 259 .read = timer_read, 260 .write = timer_write, 261 .endianness = DEVICE_NATIVE_ENDIAN, 262 }; 263 264 static int macio_newworld_initfn(PCIDevice *d) 265 { 266 MacIOState *s = MACIO(d); 267 NewWorldMacIOState *ns = NEWWORLD_MACIO(d); 268 SysBusDevice *sysbus_dev; 269 MemoryRegion *timer_memory = g_new(MemoryRegion, 1); 270 int i; 271 int cur_irq = 0; 272 int ret = macio_common_initfn(d); 273 if (ret < 0) { 274 return ret; 275 } 276 277 sysbus_dev = SYS_BUS_DEVICE(&s->cuda); 278 sysbus_connect_irq(sysbus_dev, 0, ns->irqs[cur_irq++]); 279 280 if (s->pic_mem) { 281 /* OpenPIC */ 282 memory_region_add_subregion(&s->bar, 0x40000, s->pic_mem); 283 } 284 285 /* IDE buses */ 286 for (i = 0; i < ARRAY_SIZE(ns->ide); i++) { 287 qemu_irq irq0 = ns->irqs[cur_irq++]; 288 qemu_irq irq1 = ns->irqs[cur_irq++]; 289 290 ret = macio_initfn_ide(s, &ns->ide[i], irq0, irq1, 0x16 + (i * 4)); 291 if (ret < 0) { 292 return ret; 293 } 294 } 295 296 /* Timer */ 297 memory_region_init_io(timer_memory, OBJECT(s), &timer_ops, NULL, "timer", 298 0x1000); 299 memory_region_add_subregion(&s->bar, 0x15000, timer_memory); 300 301 return 0; 302 } 303 304 static void macio_newworld_init(Object *obj) 305 { 306 MacIOState *s = MACIO(obj); 307 NewWorldMacIOState *ns = NEWWORLD_MACIO(obj); 308 int i; 309 310 qdev_init_gpio_out(DEVICE(obj), ns->irqs, ARRAY_SIZE(ns->irqs)); 311 312 for (i = 0; i < 2; i++) { 313 macio_init_ide(s, &ns->ide[i], i); 314 } 315 } 316 317 static void macio_instance_init(Object *obj) 318 { 319 MacIOState *s = MACIO(obj); 320 MemoryRegion *dbdma_mem; 321 322 memory_region_init(&s->bar, NULL, "macio", 0x80000); 323 324 object_initialize(&s->cuda, TYPE_CUDA); 325 qdev_set_parent_bus(DEVICE(&s->cuda), sysbus_get_default()); 326 object_property_add_child(obj, "cuda", OBJECT(&s->cuda), NULL); 327 328 s->dbdma = DBDMA_init(&dbdma_mem); 329 memory_region_add_subregion(&s->bar, 0x08000, dbdma_mem); 330 } 331 332 static void macio_oldworld_class_init(ObjectClass *oc, void *data) 333 { 334 PCIDeviceClass *pdc = PCI_DEVICE_CLASS(oc); 335 336 pdc->init = macio_oldworld_initfn; 337 pdc->device_id = PCI_DEVICE_ID_APPLE_343S1201; 338 } 339 340 static void macio_newworld_class_init(ObjectClass *oc, void *data) 341 { 342 PCIDeviceClass *pdc = PCI_DEVICE_CLASS(oc); 343 344 pdc->init = macio_newworld_initfn; 345 pdc->device_id = PCI_DEVICE_ID_APPLE_UNI_N_KEYL; 346 } 347 348 static void macio_class_init(ObjectClass *klass, void *data) 349 { 350 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 351 352 k->vendor_id = PCI_VENDOR_ID_APPLE; 353 k->class_id = PCI_CLASS_OTHERS << 8; 354 } 355 356 static const TypeInfo macio_oldworld_type_info = { 357 .name = TYPE_OLDWORLD_MACIO, 358 .parent = TYPE_MACIO, 359 .instance_size = sizeof(OldWorldMacIOState), 360 .instance_init = macio_oldworld_init, 361 .class_init = macio_oldworld_class_init, 362 }; 363 364 static const TypeInfo macio_newworld_type_info = { 365 .name = TYPE_NEWWORLD_MACIO, 366 .parent = TYPE_MACIO, 367 .instance_size = sizeof(NewWorldMacIOState), 368 .instance_init = macio_newworld_init, 369 .class_init = macio_newworld_class_init, 370 }; 371 372 static const TypeInfo macio_type_info = { 373 .name = TYPE_MACIO, 374 .parent = TYPE_PCI_DEVICE, 375 .instance_size = sizeof(MacIOState), 376 .instance_init = macio_instance_init, 377 .abstract = true, 378 .class_init = macio_class_init, 379 }; 380 381 static void macio_register_types(void) 382 { 383 type_register_static(&macio_type_info); 384 type_register_static(&macio_oldworld_type_info); 385 type_register_static(&macio_newworld_type_info); 386 } 387 388 type_init(macio_register_types) 389 390 void macio_init(PCIDevice *d, 391 MemoryRegion *pic_mem, 392 MemoryRegion *escc_mem) 393 { 394 MacIOState *macio_state = MACIO(d); 395 396 macio_state->pic_mem = pic_mem; 397 macio_state->escc_mem = escc_mem; 398 /* Note: this code is strongly inspirated from the corresponding code 399 in PearPC */ 400 401 qdev_init_nofail(DEVICE(d)); 402 } 403