hw/misc/macio/macio.c

   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, size_t ide_size,
 206                            int index)
 207 {
 208     gchar *name;
 209
 210     object_initialize(ide, ide_size, TYPE_MACIO_IDE);
 211     qdev_set_parent_bus(DEVICE(ide), sysbus_get_default());
 212     memory_region_add_subregion(&s->bar, 0x1f000 + ((index + 1) * 0x1000),
 213                                 &ide->mem);
 214     name = g_strdup_printf("ide[%i]", index);
 215     object_property_add_child(OBJECT(s), name, OBJECT(ide), NULL);
 216     g_free(name);
 217 }
 218
 219 static void macio_oldworld_init(Object *obj)
 220 {
 221     MacIOState *s = MACIO(obj);
 222     OldWorldMacIOState *os = OLDWORLD_MACIO(obj);
 223     DeviceState *dev;
 224     int i;
 225
 226     qdev_init_gpio_out(DEVICE(obj), os->irqs, ARRAY_SIZE(os->irqs));
 227
 228     object_initialize(&os->nvram, sizeof(os->nvram), TYPE_MACIO_NVRAM);
 229     dev = DEVICE(&os->nvram);
 230     qdev_prop_set_uint32(dev, "size", 0x2000);
 231     qdev_prop_set_uint32(dev, "it_shift", 4);
 232
 233     for (i = 0; i < 2; i++) {
 234         macio_init_ide(s, &os->ide[i], sizeof(os->ide[i]), i);
 235     }
 236 }
 237
 238 static void timer_write(void *opaque, hwaddr addr, uint64_t value,
 239                        unsigned size)
 240 {
 241 }
 242
 243 static uint64_t timer_read(void *opaque, hwaddr addr, unsigned size)
 244 {
 245     uint32_t value = 0;
 246
 247     switch (addr) {
 248     case 0x38:
 249         value = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
 250         break;
 251     case 0x3c:
 252         value = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) >> 32;
 253         break;
 254     }
 255
 256     return value;
 257 }
 258
 259 static const MemoryRegionOps timer_ops = {
 260     .read = timer_read,
 261     .write = timer_write,
 262     .endianness = DEVICE_LITTLE_ENDIAN,
 263 };
 264
 265 static int macio_newworld_initfn(PCIDevice *d)
 266 {
 267     MacIOState *s = MACIO(d);
 268     NewWorldMacIOState *ns = NEWWORLD_MACIO(d);
 269     SysBusDevice *sysbus_dev;
 270     MemoryRegion *timer_memory = g_new(MemoryRegion, 1);
 271     int i;
 272     int cur_irq = 0;
 273     int ret = macio_common_initfn(d);
 274     if (ret < 0) {
 275         return ret;
 276     }
 277
 278     sysbus_dev = SYS_BUS_DEVICE(&s->cuda);
 279     sysbus_connect_irq(sysbus_dev, 0, ns->irqs[cur_irq++]);
 280
 281     if (s->pic_mem) {
 282         /* OpenPIC */
 283         memory_region_add_subregion(&s->bar, 0x40000, s->pic_mem);
 284     }
 285
 286     /* IDE buses */
 287     for (i = 0; i < ARRAY_SIZE(ns->ide); i++) {
 288         qemu_irq irq0 = ns->irqs[cur_irq++];
 289         qemu_irq irq1 = ns->irqs[cur_irq++];
 290
 291         ret = macio_initfn_ide(s, &ns->ide[i], irq0, irq1, 0x16 + (i * 4));
 292         if (ret < 0) {
 293             return ret;
 294         }
 295     }
 296
 297     /* Timer */
 298     memory_region_init_io(timer_memory, OBJECT(s), &timer_ops, NULL, "timer",
 299                           0x1000);
 300     memory_region_add_subregion(&s->bar, 0x15000, timer_memory);
 301
 302     return 0;
 303 }
 304
 305 static void macio_newworld_init(Object *obj)
 306 {
 307     MacIOState *s = MACIO(obj);
 308     NewWorldMacIOState *ns = NEWWORLD_MACIO(obj);
 309     int i;
 310
 311     qdev_init_gpio_out(DEVICE(obj), ns->irqs, ARRAY_SIZE(ns->irqs));
 312
 313     for (i = 0; i < 2; i++) {
 314         macio_init_ide(s, &ns->ide[i], sizeof(ns->ide[i]), i);
 315     }
 316 }
 317
 318 static void macio_instance_init(Object *obj)
 319 {
 320     MacIOState *s = MACIO(obj);
 321     MemoryRegion *dbdma_mem;
 322
 323     memory_region_init(&s->bar, NULL, "macio", 0x80000);
 324
 325     object_initialize(&s->cuda, sizeof(s->cuda), TYPE_CUDA);
 326     qdev_set_parent_bus(DEVICE(&s->cuda), sysbus_get_default());
 327     object_property_add_child(obj, "cuda", OBJECT(&s->cuda), NULL);
 328
 329     s->dbdma = DBDMA_init(&dbdma_mem);
 330     memory_region_add_subregion(&s->bar, 0x08000, dbdma_mem);
 331 }
 332
 333 static void macio_oldworld_class_init(ObjectClass *oc, void *data)
 334 {
 335     PCIDeviceClass *pdc = PCI_DEVICE_CLASS(oc);
 336
 337     pdc->init = macio_oldworld_initfn;
 338     pdc->device_id = PCI_DEVICE_ID_APPLE_343S1201;
 339 }
 340
 341 static void macio_newworld_class_init(ObjectClass *oc, void *data)
 342 {
 343     PCIDeviceClass *pdc = PCI_DEVICE_CLASS(oc);
 344
 345     pdc->init = macio_newworld_initfn;
 346     pdc->device_id = PCI_DEVICE_ID_APPLE_UNI_N_KEYL;
 347 }
 348
 349 static void macio_class_init(ObjectClass *klass, void *data)
 350 {
 351     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 352
 353     k->vendor_id = PCI_VENDOR_ID_APPLE;
 354     k->class_id = PCI_CLASS_OTHERS << 8;
 355 }
 356
 357 static const TypeInfo macio_oldworld_type_info = {
 358     .name          = TYPE_OLDWORLD_MACIO,
 359     .parent        = TYPE_MACIO,
 360     .instance_size = sizeof(OldWorldMacIOState),
 361     .instance_init = macio_oldworld_init,
 362     .class_init    = macio_oldworld_class_init,
 363 };
 364
 365 static const TypeInfo macio_newworld_type_info = {
 366     .name          = TYPE_NEWWORLD_MACIO,
 367     .parent        = TYPE_MACIO,
 368     .instance_size = sizeof(NewWorldMacIOState),
 369     .instance_init = macio_newworld_init,
 370     .class_init    = macio_newworld_class_init,
 371 };
 372
 373 static const TypeInfo macio_type_info = {
 374     .name          = TYPE_MACIO,
 375     .parent        = TYPE_PCI_DEVICE,
 376     .instance_size = sizeof(MacIOState),
 377     .instance_init = macio_instance_init,
 378     .abstract      = true,
 379     .class_init    = macio_class_init,
 380 };
 381
 382 static void macio_register_types(void)
 383 {
 384     type_register_static(&macio_type_info);
 385     type_register_static(&macio_oldworld_type_info);
 386     type_register_static(&macio_newworld_type_info);
 387 }
 388
 389 type_init(macio_register_types)
 390
 391 void macio_init(PCIDevice *d,
 392                 MemoryRegion *pic_mem,
 393                 MemoryRegion *escc_mem)
 394 {
 395     MacIOState *macio_state = MACIO(d);
 396
 397     macio_state->pic_mem = pic_mem;
 398     macio_state->escc_mem = escc_mem;
 399     /* Note: this code is strongly inspirated from the corresponding code
 400        in PearPC */
 401
 402     qdev_init_nofail(DEVICE(d));
 403 }