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 "qemu/osdep.h"
  26 #include "qapi/error.h"
  27 #include "hw/hw.h"
  28 #include "hw/ppc/mac.h"
  29 #include "hw/misc/macio/cuda.h"
  30 #include "hw/pci/pci.h"
  31 #include "hw/ppc/mac_dbdma.h"
  32 #include "hw/char/escc.h"
  33
  34 #define TYPE_MACIO "macio"
  35 #define MACIO(obj) OBJECT_CHECK(MacIOState, (obj), TYPE_MACIO)
  36
  37 typedef struct MacIOState
  38 {
  39     /*< private >*/
  40     PCIDevice parent;
  41     /*< public >*/
  42
  43     MemoryRegion bar;
  44     CUDAState cuda;
  45     DBDMAState *dbdma;
  46     MemoryRegion *pic_mem;
  47     MemoryRegion *escc_mem;
  48     uint64_t frequency;
  49 } MacIOState;
  50
  51 #define OLDWORLD_MACIO(obj) \
  52     OBJECT_CHECK(OldWorldMacIOState, (obj), TYPE_OLDWORLD_MACIO)
  53
  54 typedef struct OldWorldMacIOState {
  55     /*< private >*/
  56     MacIOState parent_obj;
  57     /*< public >*/
  58
  59     qemu_irq irqs[5];
  60
  61     MacIONVRAMState nvram;
  62     MACIOIDEState ide[2];
  63 } OldWorldMacIOState;
  64
  65 #define NEWWORLD_MACIO(obj) \
  66     OBJECT_CHECK(NewWorldMacIOState, (obj), TYPE_NEWWORLD_MACIO)
  67
  68 typedef struct NewWorldMacIOState {
  69     /*< private >*/
  70     MacIOState parent_obj;
  71     /*< public >*/
  72     qemu_irq irqs[5];
  73     MACIOIDEState ide[2];
  74 } NewWorldMacIOState;
  75
  76 /*
  77  * The mac-io has two interfaces to the ESCC. One is called "escc-legacy",
  78  * while the other one is the normal, current ESCC interface.
  79  *
  80  * The magic below creates memory aliases to spawn the escc-legacy device
  81  * purely by rerouting the respective registers to our escc region. This
  82  * works because the only difference between the two memory regions is the
  83  * register layout, not their semantics.
  84  *
  85  * Reference: ftp://ftp.software.ibm.com/rs6000/technology/spec/chrp/inwork/CHRP_IORef_1.0.pdf
  86  */
  87 static void macio_escc_legacy_setup(MacIOState *macio_state)
  88 {
  89     MemoryRegion *escc_legacy = g_new(MemoryRegion, 1);
  90     MemoryRegion *bar = &macio_state->bar;
  91     int i;
  92     static const int maps[] = {
  93         0x00, 0x00, /* Command B */
  94         0x02, 0x20, /* Command A */
  95         0x04, 0x10, /* Data B */
  96         0x06, 0x30, /* Data A */
  97         0x08, 0x40, /* Enhancement B */
  98         0x0A, 0x50, /* Enhancement A */
  99         0x80, 0x80, /* Recovery count */
 100         0x90, 0x90, /* Start A */
 101         0xa0, 0xa0, /* Start B */
 102         0xb0, 0xb0, /* Detect AB */
 103     };
 104
 105     memory_region_init(escc_legacy, OBJECT(macio_state), "escc-legacy", 256);
 106     for (i = 0; i < ARRAY_SIZE(maps); i += 2) {
 107         MemoryRegion *port = g_new(MemoryRegion, 1);
 108         memory_region_init_alias(port, OBJECT(macio_state), "escc-legacy-port",
 109                                  macio_state->escc_mem, maps[i+1], 0x2);
 110         memory_region_add_subregion(escc_legacy, maps[i], port);
 111     }
 112
 113     memory_region_add_subregion(bar, 0x12000, escc_legacy);
 114 }
 115
 116 static void macio_bar_setup(MacIOState *macio_state)
 117 {
 118     MemoryRegion *bar = &macio_state->bar;
 119
 120     if (macio_state->escc_mem) {
 121         memory_region_add_subregion(bar, 0x13000, macio_state->escc_mem);
 122         macio_escc_legacy_setup(macio_state);
 123     }
 124 }
 125
 126 static void macio_common_realize(PCIDevice *d, Error **errp)
 127 {
 128     MacIOState *s = MACIO(d);
 129     SysBusDevice *sysbus_dev;
 130     Error *err = NULL;
 131
 132     object_property_set_bool(OBJECT(s->dbdma), true, "realized", &err);
 133     if (err) {
 134         error_propagate(errp, err);
 135         return;
 136     }
 137     sysbus_dev = SYS_BUS_DEVICE(s->dbdma);
 138     memory_region_add_subregion(&s->bar, 0x08000,
 139                                 sysbus_mmio_get_region(sysbus_dev, 0));
 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     qdev_prop_set_uint32(DEVICE(ide), "channel", dmaid);
 164     object_property_set_link(OBJECT(ide), OBJECT(s->dbdma), "dbdma", errp);
 165     macio_ide_register_dma(ide);
 166
 167     object_property_set_bool(OBJECT(ide), true, "realized", errp);
 168 }
 169
 170 static void macio_oldworld_realize(PCIDevice *d, Error **errp)
 171 {
 172     MacIOState *s = MACIO(d);
 173     OldWorldMacIOState *os = OLDWORLD_MACIO(d);
 174     Error *err = NULL;
 175     SysBusDevice *sysbus_dev;
 176     int i;
 177     int cur_irq = 0;
 178
 179     macio_common_realize(d, &err);
 180     if (err) {
 181         error_propagate(errp, err);
 182         return;
 183     }
 184
 185     sysbus_dev = SYS_BUS_DEVICE(&s->cuda);
 186     sysbus_connect_irq(sysbus_dev, 0, os->irqs[cur_irq++]);
 187
 188     object_property_set_bool(OBJECT(&os->nvram), true, "realized", &err);
 189     if (err) {
 190         error_propagate(errp, err);
 191         return;
 192     }
 193     sysbus_dev = SYS_BUS_DEVICE(&os->nvram);
 194     memory_region_add_subregion(&s->bar, 0x60000,
 195                                 sysbus_mmio_get_region(sysbus_dev, 0));
 196     pmac_format_nvram_partition(&os->nvram, os->nvram.size);
 197
 198     if (s->pic_mem) {
 199         /* Heathrow PIC */
 200         memory_region_add_subregion(&s->bar, 0x00000, s->pic_mem);
 201     }
 202
 203     /* IDE buses */
 204     for (i = 0; i < ARRAY_SIZE(os->ide); i++) {
 205         qemu_irq irq0 = os->irqs[cur_irq++];
 206         qemu_irq irq1 = os->irqs[cur_irq++];
 207
 208         macio_realize_ide(s, &os->ide[i], irq0, irq1, 0x16 + (i * 4), &err);
 209         if (err) {
 210             error_propagate(errp, err);
 211             return;
 212         }
 213     }
 214 }
 215
 216 static void macio_init_ide(MacIOState *s, MACIOIDEState *ide, size_t ide_size,
 217                            int index)
 218 {
 219     gchar *name;
 220
 221     object_initialize(ide, ide_size, TYPE_MACIO_IDE);
 222     qdev_set_parent_bus(DEVICE(ide), sysbus_get_default());
 223     memory_region_add_subregion(&s->bar, 0x1f000 + ((index + 1) * 0x1000),
 224                                 &ide->mem);
 225     name = g_strdup_printf("ide[%i]", index);
 226     object_property_add_child(OBJECT(s), name, OBJECT(ide), NULL);
 227     g_free(name);
 228 }
 229
 230 static void macio_oldworld_init(Object *obj)
 231 {
 232     MacIOState *s = MACIO(obj);
 233     OldWorldMacIOState *os = OLDWORLD_MACIO(obj);
 234     DeviceState *dev;
 235     int i;
 236
 237     qdev_init_gpio_out(DEVICE(obj), os->irqs, ARRAY_SIZE(os->irqs));
 238
 239     object_initialize(&os->nvram, sizeof(os->nvram), TYPE_MACIO_NVRAM);
 240     dev = DEVICE(&os->nvram);
 241     qdev_prop_set_uint32(dev, "size", 0x2000);
 242     qdev_prop_set_uint32(dev, "it_shift", 4);
 243
 244     for (i = 0; i < 2; i++) {
 245         macio_init_ide(s, &os->ide[i], sizeof(os->ide[i]), i);
 246     }
 247 }
 248
 249 static void timer_write(void *opaque, hwaddr addr, uint64_t value,
 250                        unsigned size)
 251 {
 252 }
 253
 254 static uint64_t timer_read(void *opaque, hwaddr addr, unsigned size)
 255 {
 256     uint32_t value = 0;
 257     uint64_t systime = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
 258     uint64_t kltime;
 259
 260     kltime = muldiv64(systime, 4194300, NANOSECONDS_PER_SECOND * 4);
 261     kltime = muldiv64(kltime, 18432000, 1048575);
 262
 263     switch (addr) {
 264     case 0x38:
 265         value = kltime;
 266         break;
 267     case 0x3c:
 268         value = kltime >> 32;
 269         break;
 270     }
 271
 272     return value;
 273 }
 274
 275 static const MemoryRegionOps timer_ops = {
 276     .read = timer_read,
 277     .write = timer_write,
 278     .endianness = DEVICE_LITTLE_ENDIAN,
 279 };
 280
 281 static void macio_newworld_realize(PCIDevice *d, Error **errp)
 282 {
 283     MacIOState *s = MACIO(d);
 284     NewWorldMacIOState *ns = NEWWORLD_MACIO(d);
 285     Error *err = NULL;
 286     SysBusDevice *sysbus_dev;
 287     MemoryRegion *timer_memory = NULL;
 288     int i;
 289     int cur_irq = 0;
 290
 291     macio_common_realize(d, &err);
 292     if (err) {
 293         error_propagate(errp, err);
 294         return;
 295     }
 296
 297     sysbus_dev = SYS_BUS_DEVICE(&s->cuda);
 298     sysbus_connect_irq(sysbus_dev, 0, ns->irqs[cur_irq++]);
 299
 300     if (s->pic_mem) {
 301         /* OpenPIC */
 302         memory_region_add_subregion(&s->bar, 0x40000, s->pic_mem);
 303     }
 304
 305     /* IDE buses */
 306     for (i = 0; i < ARRAY_SIZE(ns->ide); i++) {
 307         qemu_irq irq0 = ns->irqs[cur_irq++];
 308         qemu_irq irq1 = ns->irqs[cur_irq++];
 309
 310         macio_realize_ide(s, &ns->ide[i], irq0, irq1, 0x16 + (i * 4), &err);
 311         if (err) {
 312             error_propagate(errp, err);
 313             return;
 314         }
 315     }
 316
 317     /* Timer */
 318     timer_memory = g_new(MemoryRegion, 1);
 319     memory_region_init_io(timer_memory, OBJECT(s), &timer_ops, NULL, "timer",
 320                           0x1000);
 321     memory_region_add_subregion(&s->bar, 0x15000, timer_memory);
 322 }
 323
 324 static void macio_newworld_init(Object *obj)
 325 {
 326     MacIOState *s = MACIO(obj);
 327     NewWorldMacIOState *ns = NEWWORLD_MACIO(obj);
 328     int i;
 329
 330     qdev_init_gpio_out(DEVICE(obj), ns->irqs, ARRAY_SIZE(ns->irqs));
 331
 332     for (i = 0; i < 2; i++) {
 333         macio_init_ide(s, &ns->ide[i], sizeof(ns->ide[i]), i);
 334     }
 335 }
 336
 337 static void macio_instance_init(Object *obj)
 338 {
 339     MacIOState *s = MACIO(obj);
 340
 341     memory_region_init(&s->bar, obj, "macio", 0x80000);
 342
 343     object_initialize(&s->cuda, sizeof(s->cuda), TYPE_CUDA);
 344     qdev_set_parent_bus(DEVICE(&s->cuda), sysbus_get_default());
 345     object_property_add_child(obj, "cuda", OBJECT(&s->cuda), NULL);
 346
 347     s->dbdma = MAC_DBDMA(object_new(TYPE_MAC_DBDMA));
 348     object_property_add_child(obj, "dbdma", OBJECT(s->dbdma), NULL);
 349 }
 350
 351 static const VMStateDescription vmstate_macio_oldworld = {
 352     .name = "macio-oldworld",
 353     .version_id = 0,
 354     .minimum_version_id = 0,
 355     .fields = (VMStateField[]) {
 356         VMSTATE_PCI_DEVICE(parent_obj.parent, OldWorldMacIOState),
 357         VMSTATE_END_OF_LIST()
 358     }
 359 };
 360
 361 static void macio_oldworld_class_init(ObjectClass *oc, void *data)
 362 {
 363     PCIDeviceClass *pdc = PCI_DEVICE_CLASS(oc);
 364     DeviceClass *dc = DEVICE_CLASS(oc);
 365
 366     pdc->realize = macio_oldworld_realize;
 367     pdc->device_id = PCI_DEVICE_ID_APPLE_343S1201;
 368     dc->vmsd = &vmstate_macio_oldworld;
 369 }
 370
 371 static const VMStateDescription vmstate_macio_newworld = {
 372     .name = "macio-newworld",
 373     .version_id = 0,
 374     .minimum_version_id = 0,
 375     .fields = (VMStateField[]) {
 376         VMSTATE_PCI_DEVICE(parent_obj.parent, NewWorldMacIOState),
 377         VMSTATE_END_OF_LIST()
 378     }
 379 };
 380
 381 static void macio_newworld_class_init(ObjectClass *oc, void *data)
 382 {
 383     PCIDeviceClass *pdc = PCI_DEVICE_CLASS(oc);
 384     DeviceClass *dc = DEVICE_CLASS(oc);
 385
 386     pdc->realize = macio_newworld_realize;
 387     pdc->device_id = PCI_DEVICE_ID_APPLE_UNI_N_KEYL;
 388     dc->vmsd = &vmstate_macio_newworld;
 389 }
 390
 391 static Property macio_properties[] = {
 392     DEFINE_PROP_UINT64("frequency", MacIOState, frequency, 0),
 393     DEFINE_PROP_END_OF_LIST()
 394 };
 395
 396 static void macio_class_init(ObjectClass *klass, void *data)
 397 {
 398     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 399     DeviceClass *dc = DEVICE_CLASS(klass);
 400
 401     k->vendor_id = PCI_VENDOR_ID_APPLE;
 402     k->class_id = PCI_CLASS_OTHERS << 8;
 403     dc->props = macio_properties;
 404     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
 405 }
 406
 407 static const TypeInfo macio_oldworld_type_info = {
 408     .name          = TYPE_OLDWORLD_MACIO,
 409     .parent        = TYPE_MACIO,
 410     .instance_size = sizeof(OldWorldMacIOState),
 411     .instance_init = macio_oldworld_init,
 412     .class_init    = macio_oldworld_class_init,
 413 };
 414
 415 static const TypeInfo macio_newworld_type_info = {
 416     .name          = TYPE_NEWWORLD_MACIO,
 417     .parent        = TYPE_MACIO,
 418     .instance_size = sizeof(NewWorldMacIOState),
 419     .instance_init = macio_newworld_init,
 420     .class_init    = macio_newworld_class_init,
 421 };
 422
 423 static const TypeInfo macio_type_info = {
 424     .name          = TYPE_MACIO,
 425     .parent        = TYPE_PCI_DEVICE,
 426     .instance_size = sizeof(MacIOState),
 427     .instance_init = macio_instance_init,
 428     .abstract      = true,
 429     .class_init    = macio_class_init,
 430     .interfaces = (InterfaceInfo[]) {
 431         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
 432         { },
 433     },
 434 };
 435
 436 static void macio_register_types(void)
 437 {
 438     type_register_static(&macio_type_info);
 439     type_register_static(&macio_oldworld_type_info);
 440     type_register_static(&macio_newworld_type_info);
 441 }
 442
 443 type_init(macio_register_types)
 444
 445 void macio_init(PCIDevice *d,
 446                 MemoryRegion *pic_mem,
 447                 MemoryRegion *escc_mem)
 448 {
 449     MacIOState *macio_state = MACIO(d);
 450
 451     macio_state->pic_mem = pic_mem;
 452     macio_state->escc_mem = escc_mem;
 453     /* Note: this code is strongly inspirated from the corresponding code
 454        in PearPC */
 455     qdev_prop_set_uint64(DEVICE(&macio_state->cuda), "timebase-frequency",
 456                          macio_state->frequency);
 457
 458     qdev_init_nofail(DEVICE(d));
 459 }