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