hw/misc/macio/cuda.c

   1 /*
   2  * QEMU PowerMac CUDA device support
   3  *
   4  * Copyright (c) 2004-2007 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
  26 #include "qemu/osdep.h"
  27 #include "hw/hw.h"
  28 #include "hw/ppc/mac.h"
  29 #include "hw/input/adb.h"
  30 #include "hw/misc/mos6522.h"
  31 #include "hw/misc/macio/cuda.h"
  32 #include "qemu/timer.h"
  33 #include "sysemu/sysemu.h"
  34 #include "qemu/cutils.h"
  35 #include "qemu/log.h"
  36 #include "qemu/module.h"
  37 #include "trace.h"
  38
  39 /* Bits in B data register: all active low */
  40 #define TREQ            0x08    /* Transfer request (input) */
  41 #define TACK            0x10    /* Transfer acknowledge (output) */
  42 #define TIP             0x20    /* Transfer in progress (output) */
  43
  44 /* commands (1st byte) */
  45 #define ADB_PACKET      0
  46 #define CUDA_PACKET     1
  47 #define ERROR_PACKET    2
  48 #define TIMER_PACKET    3
  49 #define POWER_PACKET    4
  50 #define MACIIC_PACKET   5
  51 #define PMU_PACKET      6
  52
  53 #define CUDA_TIMER_FREQ (4700000 / 6)
  54
  55 /* CUDA returns time_t's offset from Jan 1, 1904, not 1970 */
  56 #define RTC_OFFSET                      2082844800
  57
  58 static void cuda_receive_packet_from_host(CUDAState *s,
  59                                           const uint8_t *data, int len);
  60
  61 /* MacOS uses timer 1 for calibration on startup, so we use
  62  * the timebase frequency and cuda_get_counter_value() with
  63  * cuda_get_load_time() to steer MacOS to calculate calibrate its timers
  64  * correctly for both TCG and KVM (see commit b981289c49 "PPC: Cuda: Use cuda
  65  * timer to expose tbfreq to guest" for more information) */
  66
  67 static uint64_t cuda_get_counter_value(MOS6522State *s, MOS6522Timer *ti)
  68 {
  69     MOS6522CUDAState *mcs = container_of(s, MOS6522CUDAState, parent_obj);
  70     CUDAState *cs = container_of(mcs, CUDAState, mos6522_cuda);
  71
  72     /* Reverse of the tb calculation algorithm that Mac OS X uses on bootup */
  73     uint64_t tb_diff = muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
  74                                 cs->tb_frequency, NANOSECONDS_PER_SECOND) -
  75                            ti->load_time;
  76
  77     return (tb_diff * 0xBF401675E5DULL) / (cs->tb_frequency << 24);
  78 }
  79
  80 static uint64_t cuda_get_load_time(MOS6522State *s, MOS6522Timer *ti)
  81 {
  82     MOS6522CUDAState *mcs = container_of(s, MOS6522CUDAState, parent_obj);
  83     CUDAState *cs = container_of(mcs, CUDAState, mos6522_cuda);
  84
  85     uint64_t load_time = muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
  86                                   cs->tb_frequency, NANOSECONDS_PER_SECOND);
  87     return load_time;
  88 }
  89
  90 static void cuda_set_sr_int(void *opaque)
  91 {
  92     CUDAState *s = opaque;
  93     MOS6522CUDAState *mcs = &s->mos6522_cuda;
  94     MOS6522State *ms = MOS6522(mcs);
  95     MOS6522DeviceClass *mdc = MOS6522_DEVICE_GET_CLASS(ms);
  96
  97     mdc->set_sr_int(ms);
  98 }
  99
 100 static void cuda_delay_set_sr_int(CUDAState *s)
 101 {
 102     int64_t expire;
 103
 104     trace_cuda_delay_set_sr_int();
 105
 106     expire = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + s->sr_delay_ns;
 107     timer_mod(s->sr_delay_timer, expire);
 108 }
 109
 110 /* NOTE: TIP and TREQ are negated */
 111 static void cuda_update(CUDAState *s)
 112 {
 113     MOS6522CUDAState *mcs = &s->mos6522_cuda;
 114     MOS6522State *ms = MOS6522(mcs);
 115     int packet_received, len;
 116
 117     packet_received = 0;
 118     if (!(ms->b & TIP)) {
 119         /* transfer requested from host */
 120
 121         if (ms->acr & SR_OUT) {
 122             /* data output */
 123             if ((ms->b & (TACK | TIP)) != (s->last_b & (TACK | TIP))) {
 124                 if (s->data_out_index < sizeof(s->data_out)) {
 125                     trace_cuda_data_send(ms->sr);
 126                     s->data_out[s->data_out_index++] = ms->sr;
 127                     cuda_delay_set_sr_int(s);
 128                 }
 129             }
 130         } else {
 131             if (s->data_in_index < s->data_in_size) {
 132                 /* data input */
 133                 if ((ms->b & (TACK | TIP)) != (s->last_b & (TACK | TIP))) {
 134                     ms->sr = s->data_in[s->data_in_index++];
 135                     trace_cuda_data_recv(ms->sr);
 136                     /* indicate end of transfer */
 137                     if (s->data_in_index >= s->data_in_size) {
 138                         ms->b = (ms->b | TREQ);
 139                     }
 140                     cuda_delay_set_sr_int(s);
 141                 }
 142             }
 143         }
 144     } else {
 145         /* no transfer requested: handle sync case */
 146         if ((s->last_b & TIP) && (ms->b & TACK) != (s->last_b & TACK)) {
 147             /* update TREQ state each time TACK change state */
 148             if (ms->b & TACK) {
 149                 ms->b = (ms->b | TREQ);
 150             } else {
 151                 ms->b = (ms->b & ~TREQ);
 152             }
 153             cuda_delay_set_sr_int(s);
 154         } else {
 155             if (!(s->last_b & TIP)) {
 156                 /* handle end of host to cuda transfer */
 157                 packet_received = (s->data_out_index > 0);
 158                 /* always an IRQ at the end of transfer */
 159                 cuda_delay_set_sr_int(s);
 160             }
 161             /* signal if there is data to read */
 162             if (s->data_in_index < s->data_in_size) {
 163                 ms->b = (ms->b & ~TREQ);
 164             }
 165         }
 166     }
 167
 168     s->last_acr = ms->acr;
 169     s->last_b = ms->b;
 170
 171     /* NOTE: cuda_receive_packet_from_host() can call cuda_update()
 172        recursively */
 173     if (packet_received) {
 174         len = s->data_out_index;
 175         s->data_out_index = 0;
 176         cuda_receive_packet_from_host(s, s->data_out, len);
 177     }
 178 }
 179
 180 static void cuda_send_packet_to_host(CUDAState *s,
 181                                      const uint8_t *data, int len)
 182 {
 183     int i;
 184
 185     trace_cuda_packet_send(len);
 186     for (i = 0; i < len; i++) {
 187         trace_cuda_packet_send_data(i, data[i]);
 188     }
 189
 190     memcpy(s->data_in, data, len);
 191     s->data_in_size = len;
 192     s->data_in_index = 0;
 193     cuda_update(s);
 194     cuda_delay_set_sr_int(s);
 195 }
 196
 197 static void cuda_adb_poll(void *opaque)
 198 {
 199     CUDAState *s = opaque;
 200     uint8_t obuf[ADB_MAX_OUT_LEN + 2];
 201     int olen;
 202
 203     olen = adb_poll(&s->adb_bus, obuf + 2, s->adb_poll_mask);
 204     if (olen > 0) {
 205         obuf[0] = ADB_PACKET;
 206         obuf[1] = 0x40; /* polled data */
 207         cuda_send_packet_to_host(s, obuf, olen + 2);
 208     }
 209     timer_mod(s->adb_poll_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
 210               (NANOSECONDS_PER_SECOND / (1000 / s->autopoll_rate_ms)));
 211 }
 212
 213 /* description of commands */
 214 typedef struct CudaCommand {
 215     uint8_t command;
 216     const char *name;
 217     bool (*handler)(CUDAState *s,
 218                     const uint8_t *in_args, int in_len,
 219                     uint8_t *out_args, int *out_len);
 220 } CudaCommand;
 221
 222 static bool cuda_cmd_autopoll(CUDAState *s,
 223                               const uint8_t *in_data, int in_len,
 224                               uint8_t *out_data, int *out_len)
 225 {
 226     int autopoll;
 227
 228     if (in_len != 1) {
 229         return false;
 230     }
 231
 232     autopoll = (in_data[0] != 0);
 233     if (autopoll != s->autopoll) {
 234         s->autopoll = autopoll;
 235         if (autopoll) {
 236             timer_mod(s->adb_poll_timer,
 237                       qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
 238                       (NANOSECONDS_PER_SECOND / (1000 / s->autopoll_rate_ms)));
 239         } else {
 240             timer_del(s->adb_poll_timer);
 241         }
 242     }
 243     return true;
 244 }
 245
 246 static bool cuda_cmd_set_autorate(CUDAState *s,
 247                                   const uint8_t *in_data, int in_len,
 248                                   uint8_t *out_data, int *out_len)
 249 {
 250     if (in_len != 1) {
 251         return false;
 252     }
 253
 254     /* we don't want a period of 0 ms */
 255     /* FIXME: check what real hardware does */
 256     if (in_data[0] == 0) {
 257         return false;
 258     }
 259
 260     s->autopoll_rate_ms = in_data[0];
 261     if (s->autopoll) {
 262         timer_mod(s->adb_poll_timer,
 263                   qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
 264                   (NANOSECONDS_PER_SECOND / (1000 / s->autopoll_rate_ms)));
 265     }
 266     return true;
 267 }
 268
 269 static bool cuda_cmd_set_device_list(CUDAState *s,
 270                                      const uint8_t *in_data, int in_len,
 271                                      uint8_t *out_data, int *out_len)
 272 {
 273     if (in_len != 2) {
 274         return false;
 275     }
 276
 277     s->adb_poll_mask = (((uint16_t)in_data[0]) << 8) | in_data[1];
 278     return true;
 279 }
 280
 281 static bool cuda_cmd_powerdown(CUDAState *s,
 282                                const uint8_t *in_data, int in_len,
 283                                uint8_t *out_data, int *out_len)
 284 {
 285     if (in_len != 0) {
 286         return false;
 287     }
 288
 289     qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
 290     return true;
 291 }
 292
 293 static bool cuda_cmd_reset_system(CUDAState *s,
 294                                   const uint8_t *in_data, int in_len,
 295                                   uint8_t *out_data, int *out_len)
 296 {
 297     if (in_len != 0) {
 298         return false;
 299     }
 300
 301     qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
 302     return true;
 303 }
 304
 305 static bool cuda_cmd_set_file_server_flag(CUDAState *s,
 306                                           const uint8_t *in_data, int in_len,
 307                                           uint8_t *out_data, int *out_len)
 308 {
 309     if (in_len != 1) {
 310         return false;
 311     }
 312
 313     qemu_log_mask(LOG_UNIMP,
 314                   "CUDA: unimplemented command FILE_SERVER_FLAG %d\n",
 315                   in_data[0]);
 316     return true;
 317 }
 318
 319 static bool cuda_cmd_set_power_message(CUDAState *s,
 320                                        const uint8_t *in_data, int in_len,
 321                                        uint8_t *out_data, int *out_len)
 322 {
 323     if (in_len != 1) {
 324         return false;
 325     }
 326
 327     qemu_log_mask(LOG_UNIMP,
 328                   "CUDA: unimplemented command SET_POWER_MESSAGE %d\n",
 329                   in_data[0]);
 330     return true;
 331 }
 332
 333 static bool cuda_cmd_get_time(CUDAState *s,
 334                               const uint8_t *in_data, int in_len,
 335                               uint8_t *out_data, int *out_len)
 336 {
 337     uint32_t ti;
 338
 339     if (in_len != 0) {
 340         return false;
 341     }
 342
 343     ti = s->tick_offset + (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)
 344                            / NANOSECONDS_PER_SECOND);
 345     out_data[0] = ti >> 24;
 346     out_data[1] = ti >> 16;
 347     out_data[2] = ti >> 8;
 348     out_data[3] = ti;
 349     *out_len = 4;
 350     return true;
 351 }
 352
 353 static bool cuda_cmd_set_time(CUDAState *s,
 354                               const uint8_t *in_data, int in_len,
 355                               uint8_t *out_data, int *out_len)
 356 {
 357     uint32_t ti;
 358
 359     if (in_len != 4) {
 360         return false;
 361     }
 362
 363     ti = (((uint32_t)in_data[0]) << 24) + (((uint32_t)in_data[1]) << 16)
 364          + (((uint32_t)in_data[2]) << 8) + in_data[3];
 365     s->tick_offset = ti - (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)
 366                            / NANOSECONDS_PER_SECOND);
 367     return true;
 368 }
 369
 370 static const CudaCommand handlers[] = {
 371     { CUDA_AUTOPOLL, "AUTOPOLL", cuda_cmd_autopoll },
 372     { CUDA_SET_AUTO_RATE, "SET_AUTO_RATE",  cuda_cmd_set_autorate },
 373     { CUDA_SET_DEVICE_LIST, "SET_DEVICE_LIST", cuda_cmd_set_device_list },
 374     { CUDA_POWERDOWN, "POWERDOWN", cuda_cmd_powerdown },
 375     { CUDA_RESET_SYSTEM, "RESET_SYSTEM", cuda_cmd_reset_system },
 376     { CUDA_FILE_SERVER_FLAG, "FILE_SERVER_FLAG",
 377       cuda_cmd_set_file_server_flag },
 378     { CUDA_SET_POWER_MESSAGES, "SET_POWER_MESSAGES",
 379       cuda_cmd_set_power_message },
 380     { CUDA_GET_TIME, "GET_TIME", cuda_cmd_get_time },
 381     { CUDA_SET_TIME, "SET_TIME", cuda_cmd_set_time },
 382 };
 383
 384 static void cuda_receive_packet(CUDAState *s,
 385                                 const uint8_t *data, int len)
 386 {
 387     uint8_t obuf[16] = { CUDA_PACKET, 0, data[0] };
 388     int i, out_len = 0;
 389
 390     for (i = 0; i < ARRAY_SIZE(handlers); i++) {
 391         const CudaCommand *desc = &handlers[i];
 392         if (desc->command == data[0]) {
 393             trace_cuda_receive_packet_cmd(desc->name);
 394             out_len = 0;
 395             if (desc->handler(s, data + 1, len - 1, obuf + 3, &out_len)) {
 396                 cuda_send_packet_to_host(s, obuf, 3 + out_len);
 397             } else {
 398                 qemu_log_mask(LOG_GUEST_ERROR,
 399                               "CUDA: %s: wrong parameters %d\n",
 400                               desc->name, len);
 401                 obuf[0] = ERROR_PACKET;
 402                 obuf[1] = 0x5; /* bad parameters */
 403                 obuf[2] = CUDA_PACKET;
 404                 obuf[3] = data[0];
 405                 cuda_send_packet_to_host(s, obuf, 4);
 406             }
 407             return;
 408         }
 409     }
 410
 411     qemu_log_mask(LOG_GUEST_ERROR, "CUDA: unknown command 0x%02x\n", data[0]);
 412     obuf[0] = ERROR_PACKET;
 413     obuf[1] = 0x2; /* unknown command */
 414     obuf[2] = CUDA_PACKET;
 415     obuf[3] = data[0];
 416     cuda_send_packet_to_host(s, obuf, 4);
 417 }
 418
 419 static void cuda_receive_packet_from_host(CUDAState *s,
 420                                           const uint8_t *data, int len)
 421 {
 422     int i;
 423
 424     trace_cuda_packet_receive(len);
 425     for (i = 0; i < len; i++) {
 426         trace_cuda_packet_receive_data(i, data[i]);
 427     }
 428
 429     switch(data[0]) {
 430     case ADB_PACKET:
 431         {
 432             uint8_t obuf[ADB_MAX_OUT_LEN + 3];
 433             int olen;
 434             olen = adb_request(&s->adb_bus, obuf + 2, data + 1, len - 1);
 435             if (olen > 0) {
 436                 obuf[0] = ADB_PACKET;
 437                 obuf[1] = 0x00;
 438                 cuda_send_packet_to_host(s, obuf, olen + 2);
 439             } else {
 440                 /* error */
 441                 obuf[0] = ADB_PACKET;
 442                 obuf[1] = -olen;
 443                 obuf[2] = data[1];
 444                 olen = 0;
 445                 cuda_send_packet_to_host(s, obuf, olen + 3);
 446             }
 447         }
 448         break;
 449     case CUDA_PACKET:
 450         cuda_receive_packet(s, data + 1, len - 1);
 451         break;
 452     }
 453 }
 454
 455 static uint64_t mos6522_cuda_read(void *opaque, hwaddr addr, unsigned size)
 456 {
 457     CUDAState *s = opaque;
 458     MOS6522CUDAState *mcs = &s->mos6522_cuda;
 459     MOS6522State *ms = MOS6522(mcs);
 460
 461     addr = (addr >> 9) & 0xf;
 462     return mos6522_read(ms, addr, size);
 463 }
 464
 465 static void mos6522_cuda_write(void *opaque, hwaddr addr, uint64_t val,
 466                                unsigned size)
 467 {
 468     CUDAState *s = opaque;
 469     MOS6522CUDAState *mcs = &s->mos6522_cuda;
 470     MOS6522State *ms = MOS6522(mcs);
 471
 472     addr = (addr >> 9) & 0xf;
 473     mos6522_write(ms, addr, val, size);
 474 }
 475
 476 static const MemoryRegionOps mos6522_cuda_ops = {
 477     .read = mos6522_cuda_read,
 478     .write = mos6522_cuda_write,
 479     .endianness = DEVICE_BIG_ENDIAN,
 480     .valid = {
 481         .min_access_size = 1,
 482         .max_access_size = 1,
 483     },
 484 };
 485
 486 static const VMStateDescription vmstate_cuda = {
 487     .name = "cuda",
 488     .version_id = 5,
 489     .minimum_version_id = 5,
 490     .fields = (VMStateField[]) {
 491         VMSTATE_STRUCT(mos6522_cuda.parent_obj, CUDAState, 0, vmstate_mos6522,
 492                        MOS6522State),
 493         VMSTATE_UINT8(last_b, CUDAState),
 494         VMSTATE_UINT8(last_acr, CUDAState),
 495         VMSTATE_INT32(data_in_size, CUDAState),
 496         VMSTATE_INT32(data_in_index, CUDAState),
 497         VMSTATE_INT32(data_out_index, CUDAState),
 498         VMSTATE_UINT8(autopoll, CUDAState),
 499         VMSTATE_UINT8(autopoll_rate_ms, CUDAState),
 500         VMSTATE_UINT16(adb_poll_mask, CUDAState),
 501         VMSTATE_BUFFER(data_in, CUDAState),
 502         VMSTATE_BUFFER(data_out, CUDAState),
 503         VMSTATE_UINT32(tick_offset, CUDAState),
 504         VMSTATE_TIMER_PTR(adb_poll_timer, CUDAState),
 505         VMSTATE_TIMER_PTR(sr_delay_timer, CUDAState),
 506         VMSTATE_END_OF_LIST()
 507     }
 508 };
 509
 510 static void cuda_reset(DeviceState *dev)
 511 {
 512     CUDAState *s = CUDA(dev);
 513
 514     s->data_in_size = 0;
 515     s->data_in_index = 0;
 516     s->data_out_index = 0;
 517     s->autopoll = 0;
 518 }
 519
 520 static void cuda_realize(DeviceState *dev, Error **errp)
 521 {
 522     CUDAState *s = CUDA(dev);
 523     SysBusDevice *sbd;
 524     MOS6522State *ms;
 525     DeviceState *d;
 526     struct tm tm;
 527
 528     /* Pass IRQ from 6522 */
 529     d = DEVICE(&s->mos6522_cuda);
 530     ms = MOS6522(d);
 531     sbd = SYS_BUS_DEVICE(s);
 532     sysbus_pass_irq(sbd, SYS_BUS_DEVICE(ms));
 533
 534     qemu_get_timedate(&tm, 0);
 535     s->tick_offset = (uint32_t)mktimegm(&tm) + RTC_OFFSET;
 536
 537     s->sr_delay_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, cuda_set_sr_int, s);
 538     s->sr_delay_ns = 20 * SCALE_US;
 539
 540     s->adb_poll_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, cuda_adb_poll, s);
 541     s->adb_poll_mask = 0xffff;
 542     s->autopoll_rate_ms = 20;
 543 }
 544
 545 static void cuda_init(Object *obj)
 546 {
 547     CUDAState *s = CUDA(obj);
 548     SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
 549
 550     sysbus_init_child_obj(obj, "mos6522-cuda", &s->mos6522_cuda,
 551                           sizeof(s->mos6522_cuda), TYPE_MOS6522_CUDA);
 552
 553     memory_region_init_io(&s->mem, obj, &mos6522_cuda_ops, s, "cuda", 0x2000);
 554     sysbus_init_mmio(sbd, &s->mem);
 555
 556     qbus_create_inplace(&s->adb_bus, sizeof(s->adb_bus), TYPE_ADB_BUS,
 557                         DEVICE(obj), "adb.0");
 558 }
 559
 560 static Property cuda_properties[] = {
 561     DEFINE_PROP_UINT64("timebase-frequency", CUDAState, tb_frequency, 0),
 562     DEFINE_PROP_END_OF_LIST()
 563 };
 564
 565 static void cuda_class_init(ObjectClass *oc, void *data)
 566 {
 567     DeviceClass *dc = DEVICE_CLASS(oc);
 568
 569     dc->realize = cuda_realize;
 570     dc->reset = cuda_reset;
 571     dc->vmsd = &vmstate_cuda;
 572     dc->props = cuda_properties;
 573     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
 574 }
 575
 576 static const TypeInfo cuda_type_info = {
 577     .name = TYPE_CUDA,
 578     .parent = TYPE_SYS_BUS_DEVICE,
 579     .instance_size = sizeof(CUDAState),
 580     .instance_init = cuda_init,
 581     .class_init = cuda_class_init,
 582 };
 583
 584 static void mos6522_cuda_portB_write(MOS6522State *s)
 585 {
 586     MOS6522CUDAState *mcs = container_of(s, MOS6522CUDAState, parent_obj);
 587     CUDAState *cs = container_of(mcs, CUDAState, mos6522_cuda);
 588
 589     cuda_update(cs);
 590 }
 591
 592 static void mos6522_cuda_reset(DeviceState *dev)
 593 {
 594     MOS6522State *ms = MOS6522(dev);
 595     MOS6522DeviceClass *mdc = MOS6522_DEVICE_GET_CLASS(ms);
 596
 597     mdc->parent_reset(dev);
 598
 599     ms->timers[0].frequency = CUDA_TIMER_FREQ;
 600     ms->timers[1].frequency = (SCALE_US * 6000) / 4700;
 601 }
 602
 603 static void mos6522_cuda_class_init(ObjectClass *oc, void *data)
 604 {
 605     DeviceClass *dc = DEVICE_CLASS(oc);
 606     MOS6522DeviceClass *mdc = MOS6522_DEVICE_CLASS(oc);
 607
 608     dc->reset = mos6522_cuda_reset;
 609     mdc->portB_write = mos6522_cuda_portB_write;
 610     mdc->get_timer1_counter_value = cuda_get_counter_value;
 611     mdc->get_timer2_counter_value = cuda_get_counter_value;
 612     mdc->get_timer1_load_time = cuda_get_load_time;
 613     mdc->get_timer2_load_time = cuda_get_load_time;
 614 }
 615
 616 static const TypeInfo mos6522_cuda_type_info = {
 617     .name = TYPE_MOS6522_CUDA,
 618     .parent = TYPE_MOS6522,
 619     .instance_size = sizeof(MOS6522CUDAState),
 620     .class_init = mos6522_cuda_class_init,
 621 };
 622
 623 static void cuda_register_types(void)
 624 {
 625     type_register_static(&mos6522_cuda_type_info);
 626     type_register_static(&cuda_type_info);
 627 }
 628
 629 type_init(cuda_register_types)