xref: /openbmc/qemu/hw/misc/macio/cuda.c (revision 10df8ff1)
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 #include "qemu/osdep.h"
26 #include "hw/hw.h"
27 #include "hw/ppc/mac.h"
28 #include "hw/input/adb.h"
29 #include "hw/misc/mos6522.h"
30 #include "hw/misc/macio/cuda.h"
31 #include "qemu/timer.h"
32 #include "sysemu/sysemu.h"
33 #include "qemu/cutils.h"
34 #include "qemu/log.h"
35 #include "trace.h"
36 
37 /* Bits in B data register: all active low */
38 #define TREQ            0x08    /* Transfer request (input) */
39 #define TACK            0x10    /* Transfer acknowledge (output) */
40 #define TIP             0x20    /* Transfer in progress (output) */
41 
42 /* commands (1st byte) */
43 #define ADB_PACKET      0
44 #define CUDA_PACKET     1
45 #define ERROR_PACKET    2
46 #define TIMER_PACKET    3
47 #define POWER_PACKET    4
48 #define MACIIC_PACKET   5
49 #define PMU_PACKET      6
50 
51 #define CUDA_TIMER_FREQ (4700000 / 6)
52 
53 /* CUDA returns time_t's offset from Jan 1, 1904, not 1970 */
54 #define RTC_OFFSET                      2082844800
55 
56 static void cuda_receive_packet_from_host(CUDAState *s,
57                                           const uint8_t *data, int len);
58 
59 /* MacOS uses timer 1 for calibration on startup, so we use
60  * the timebase frequency and cuda_get_counter_value() with
61  * cuda_get_load_time() to steer MacOS to calculate calibrate its timers
62  * correctly for both TCG and KVM (see commit b981289c49 "PPC: Cuda: Use cuda
63  * timer to expose tbfreq to guest" for more information) */
64 
65 static uint64_t cuda_get_counter_value(MOS6522State *s, MOS6522Timer *ti)
66 {
67     MOS6522CUDAState *mcs = container_of(s, MOS6522CUDAState, parent_obj);
68     CUDAState *cs = container_of(mcs, CUDAState, mos6522_cuda);
69 
70     /* Reverse of the tb calculation algorithm that Mac OS X uses on bootup */
71     uint64_t tb_diff = muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
72                                 cs->tb_frequency, NANOSECONDS_PER_SECOND) -
73                            ti->load_time;
74 
75     return (tb_diff * 0xBF401675E5DULL) / (cs->tb_frequency << 24);
76 }
77 
78 static uint64_t cuda_get_load_time(MOS6522State *s, MOS6522Timer *ti)
79 {
80     MOS6522CUDAState *mcs = container_of(s, MOS6522CUDAState, parent_obj);
81     CUDAState *cs = container_of(mcs, CUDAState, mos6522_cuda);
82 
83     uint64_t load_time = muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
84                                   cs->tb_frequency, NANOSECONDS_PER_SECOND);
85     return load_time;
86 }
87 
88 static void cuda_set_sr_int(void *opaque)
89 {
90     CUDAState *s = opaque;
91     MOS6522CUDAState *mcs = &s->mos6522_cuda;
92     MOS6522State *ms = MOS6522(mcs);
93     MOS6522DeviceClass *mdc = MOS6522_DEVICE_GET_CLASS(ms);
94 
95     mdc->set_sr_int(ms);
96 }
97 
98 static void cuda_delay_set_sr_int(CUDAState *s)
99 {
100     MOS6522CUDAState *mcs = &s->mos6522_cuda;
101     MOS6522State *ms = MOS6522(mcs);
102     MOS6522DeviceClass *mdc = MOS6522_DEVICE_GET_CLASS(ms);
103     int64_t expire;
104 
105     if (ms->dirb == 0xff || s->sr_delay_ns == 0) {
106         /* Disabled or not in Mac OS, fire the IRQ directly */
107         mdc->set_sr_int(ms);
108         return;
109     }
110 
111     trace_cuda_delay_set_sr_int();
112 
113     expire = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + s->sr_delay_ns;
114     timer_mod(s->sr_delay_timer, expire);
115 }
116 
117 /* NOTE: TIP and TREQ are negated */
118 static void cuda_update(CUDAState *s)
119 {
120     MOS6522CUDAState *mcs = &s->mos6522_cuda;
121     MOS6522State *ms = MOS6522(mcs);
122     int packet_received, len;
123 
124     packet_received = 0;
125     if (!(ms->b & TIP)) {
126         /* transfer requested from host */
127 
128         if (ms->acr & SR_OUT) {
129             /* data output */
130             if ((ms->b & (TACK | TIP)) != (s->last_b & (TACK | TIP))) {
131                 if (s->data_out_index < sizeof(s->data_out)) {
132                     trace_cuda_data_send(ms->sr);
133                     s->data_out[s->data_out_index++] = ms->sr;
134                     cuda_delay_set_sr_int(s);
135                 }
136             }
137         } else {
138             if (s->data_in_index < s->data_in_size) {
139                 /* data input */
140                 if ((ms->b & (TACK | TIP)) != (s->last_b & (TACK | TIP))) {
141                     ms->sr = s->data_in[s->data_in_index++];
142                     trace_cuda_data_recv(ms->sr);
143                     /* indicate end of transfer */
144                     if (s->data_in_index >= s->data_in_size) {
145                         ms->b = (ms->b | TREQ);
146                     }
147                     cuda_delay_set_sr_int(s);
148                 }
149             }
150         }
151     } else {
152         /* no transfer requested: handle sync case */
153         if ((s->last_b & TIP) && (ms->b & TACK) != (s->last_b & TACK)) {
154             /* update TREQ state each time TACK change state */
155             if (ms->b & TACK) {
156                 ms->b = (ms->b | TREQ);
157             } else {
158                 ms->b = (ms->b & ~TREQ);
159             }
160             cuda_delay_set_sr_int(s);
161         } else {
162             if (!(s->last_b & TIP)) {
163                 /* handle end of host to cuda transfer */
164                 packet_received = (s->data_out_index > 0);
165                 /* always an IRQ at the end of transfer */
166                 cuda_delay_set_sr_int(s);
167             }
168             /* signal if there is data to read */
169             if (s->data_in_index < s->data_in_size) {
170                 ms->b = (ms->b & ~TREQ);
171             }
172         }
173     }
174 
175     s->last_acr = ms->acr;
176     s->last_b = ms->b;
177 
178     /* NOTE: cuda_receive_packet_from_host() can call cuda_update()
179        recursively */
180     if (packet_received) {
181         len = s->data_out_index;
182         s->data_out_index = 0;
183         cuda_receive_packet_from_host(s, s->data_out, len);
184     }
185 }
186 
187 static void cuda_send_packet_to_host(CUDAState *s,
188                                      const uint8_t *data, int len)
189 {
190     int i;
191 
192     trace_cuda_packet_send(len);
193     for (i = 0; i < len; i++) {
194         trace_cuda_packet_send_data(i, data[i]);
195     }
196 
197     memcpy(s->data_in, data, len);
198     s->data_in_size = len;
199     s->data_in_index = 0;
200     cuda_update(s);
201     cuda_delay_set_sr_int(s);
202 }
203 
204 static void cuda_adb_poll(void *opaque)
205 {
206     CUDAState *s = opaque;
207     uint8_t obuf[ADB_MAX_OUT_LEN + 2];
208     int olen;
209 
210     olen = adb_poll(&s->adb_bus, obuf + 2, s->adb_poll_mask);
211     if (olen > 0) {
212         obuf[0] = ADB_PACKET;
213         obuf[1] = 0x40; /* polled data */
214         cuda_send_packet_to_host(s, obuf, olen + 2);
215     }
216     timer_mod(s->adb_poll_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
217               (NANOSECONDS_PER_SECOND / (1000 / s->autopoll_rate_ms)));
218 }
219 
220 /* description of commands */
221 typedef struct CudaCommand {
222     uint8_t command;
223     const char *name;
224     bool (*handler)(CUDAState *s,
225                     const uint8_t *in_args, int in_len,
226                     uint8_t *out_args, int *out_len);
227 } CudaCommand;
228 
229 static bool cuda_cmd_autopoll(CUDAState *s,
230                               const uint8_t *in_data, int in_len,
231                               uint8_t *out_data, int *out_len)
232 {
233     int autopoll;
234 
235     if (in_len != 1) {
236         return false;
237     }
238 
239     autopoll = (in_data[0] != 0);
240     if (autopoll != s->autopoll) {
241         s->autopoll = autopoll;
242         if (autopoll) {
243             timer_mod(s->adb_poll_timer,
244                       qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
245                       (NANOSECONDS_PER_SECOND / (1000 / s->autopoll_rate_ms)));
246         } else {
247             timer_del(s->adb_poll_timer);
248         }
249     }
250     return true;
251 }
252 
253 static bool cuda_cmd_set_autorate(CUDAState *s,
254                                   const uint8_t *in_data, int in_len,
255                                   uint8_t *out_data, int *out_len)
256 {
257     if (in_len != 1) {
258         return false;
259     }
260 
261     /* we don't want a period of 0 ms */
262     /* FIXME: check what real hardware does */
263     if (in_data[0] == 0) {
264         return false;
265     }
266 
267     s->autopoll_rate_ms = in_data[0];
268     if (s->autopoll) {
269         timer_mod(s->adb_poll_timer,
270                   qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
271                   (NANOSECONDS_PER_SECOND / (1000 / s->autopoll_rate_ms)));
272     }
273     return true;
274 }
275 
276 static bool cuda_cmd_set_device_list(CUDAState *s,
277                                      const uint8_t *in_data, int in_len,
278                                      uint8_t *out_data, int *out_len)
279 {
280     if (in_len != 2) {
281         return false;
282     }
283 
284     s->adb_poll_mask = (((uint16_t)in_data[0]) << 8) | in_data[1];
285     return true;
286 }
287 
288 static bool cuda_cmd_powerdown(CUDAState *s,
289                                const uint8_t *in_data, int in_len,
290                                uint8_t *out_data, int *out_len)
291 {
292     if (in_len != 0) {
293         return false;
294     }
295 
296     qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
297     return true;
298 }
299 
300 static bool cuda_cmd_reset_system(CUDAState *s,
301                                   const uint8_t *in_data, int in_len,
302                                   uint8_t *out_data, int *out_len)
303 {
304     if (in_len != 0) {
305         return false;
306     }
307 
308     qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
309     return true;
310 }
311 
312 static bool cuda_cmd_set_file_server_flag(CUDAState *s,
313                                           const uint8_t *in_data, int in_len,
314                                           uint8_t *out_data, int *out_len)
315 {
316     if (in_len != 1) {
317         return false;
318     }
319 
320     qemu_log_mask(LOG_UNIMP,
321                   "CUDA: unimplemented command FILE_SERVER_FLAG %d\n",
322                   in_data[0]);
323     return true;
324 }
325 
326 static bool cuda_cmd_set_power_message(CUDAState *s,
327                                        const uint8_t *in_data, int in_len,
328                                        uint8_t *out_data, int *out_len)
329 {
330     if (in_len != 1) {
331         return false;
332     }
333 
334     qemu_log_mask(LOG_UNIMP,
335                   "CUDA: unimplemented command SET_POWER_MESSAGE %d\n",
336                   in_data[0]);
337     return true;
338 }
339 
340 static bool cuda_cmd_get_time(CUDAState *s,
341                               const uint8_t *in_data, int in_len,
342                               uint8_t *out_data, int *out_len)
343 {
344     uint32_t ti;
345 
346     if (in_len != 0) {
347         return false;
348     }
349 
350     ti = s->tick_offset + (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)
351                            / NANOSECONDS_PER_SECOND);
352     out_data[0] = ti >> 24;
353     out_data[1] = ti >> 16;
354     out_data[2] = ti >> 8;
355     out_data[3] = ti;
356     *out_len = 4;
357     return true;
358 }
359 
360 static bool cuda_cmd_set_time(CUDAState *s,
361                               const uint8_t *in_data, int in_len,
362                               uint8_t *out_data, int *out_len)
363 {
364     uint32_t ti;
365 
366     if (in_len != 4) {
367         return false;
368     }
369 
370     ti = (((uint32_t)in_data[0]) << 24) + (((uint32_t)in_data[1]) << 16)
371          + (((uint32_t)in_data[2]) << 8) + in_data[3];
372     s->tick_offset = ti - (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)
373                            / NANOSECONDS_PER_SECOND);
374     return true;
375 }
376 
377 static const CudaCommand handlers[] = {
378     { CUDA_AUTOPOLL, "AUTOPOLL", cuda_cmd_autopoll },
379     { CUDA_SET_AUTO_RATE, "SET_AUTO_RATE",  cuda_cmd_set_autorate },
380     { CUDA_SET_DEVICE_LIST, "SET_DEVICE_LIST", cuda_cmd_set_device_list },
381     { CUDA_POWERDOWN, "POWERDOWN", cuda_cmd_powerdown },
382     { CUDA_RESET_SYSTEM, "RESET_SYSTEM", cuda_cmd_reset_system },
383     { CUDA_FILE_SERVER_FLAG, "FILE_SERVER_FLAG",
384       cuda_cmd_set_file_server_flag },
385     { CUDA_SET_POWER_MESSAGES, "SET_POWER_MESSAGES",
386       cuda_cmd_set_power_message },
387     { CUDA_GET_TIME, "GET_TIME", cuda_cmd_get_time },
388     { CUDA_SET_TIME, "SET_TIME", cuda_cmd_set_time },
389 };
390 
391 static void cuda_receive_packet(CUDAState *s,
392                                 const uint8_t *data, int len)
393 {
394     uint8_t obuf[16] = { CUDA_PACKET, 0, data[0] };
395     int i, out_len = 0;
396 
397     for (i = 0; i < ARRAY_SIZE(handlers); i++) {
398         const CudaCommand *desc = &handlers[i];
399         if (desc->command == data[0]) {
400             trace_cuda_receive_packet_cmd(desc->name);
401             out_len = 0;
402             if (desc->handler(s, data + 1, len - 1, obuf + 3, &out_len)) {
403                 cuda_send_packet_to_host(s, obuf, 3 + out_len);
404             } else {
405                 qemu_log_mask(LOG_GUEST_ERROR,
406                               "CUDA: %s: wrong parameters %d\n",
407                               desc->name, len);
408                 obuf[0] = ERROR_PACKET;
409                 obuf[1] = 0x5; /* bad parameters */
410                 obuf[2] = CUDA_PACKET;
411                 obuf[3] = data[0];
412                 cuda_send_packet_to_host(s, obuf, 4);
413             }
414             return;
415         }
416     }
417 
418     qemu_log_mask(LOG_GUEST_ERROR, "CUDA: unknown command 0x%02x\n", data[0]);
419     obuf[0] = ERROR_PACKET;
420     obuf[1] = 0x2; /* unknown command */
421     obuf[2] = CUDA_PACKET;
422     obuf[3] = data[0];
423     cuda_send_packet_to_host(s, obuf, 4);
424 }
425 
426 static void cuda_receive_packet_from_host(CUDAState *s,
427                                           const uint8_t *data, int len)
428 {
429     int i;
430 
431     trace_cuda_packet_receive(len);
432     for (i = 0; i < len; i++) {
433         trace_cuda_packet_receive_data(i, data[i]);
434     }
435 
436     switch(data[0]) {
437     case ADB_PACKET:
438         {
439             uint8_t obuf[ADB_MAX_OUT_LEN + 3];
440             int olen;
441             olen = adb_request(&s->adb_bus, obuf + 2, data + 1, len - 1);
442             if (olen > 0) {
443                 obuf[0] = ADB_PACKET;
444                 obuf[1] = 0x00;
445                 cuda_send_packet_to_host(s, obuf, olen + 2);
446             } else {
447                 /* error */
448                 obuf[0] = ADB_PACKET;
449                 obuf[1] = -olen;
450                 obuf[2] = data[1];
451                 olen = 0;
452                 cuda_send_packet_to_host(s, obuf, olen + 3);
453             }
454         }
455         break;
456     case CUDA_PACKET:
457         cuda_receive_packet(s, data + 1, len - 1);
458         break;
459     }
460 }
461 
462 static uint64_t mos6522_cuda_read(void *opaque, hwaddr addr, unsigned size)
463 {
464     CUDAState *s = opaque;
465     MOS6522CUDAState *mcs = &s->mos6522_cuda;
466     MOS6522State *ms = MOS6522(mcs);
467 
468     addr = (addr >> 9) & 0xf;
469     return mos6522_read(ms, addr, size);
470 }
471 
472 static void mos6522_cuda_write(void *opaque, hwaddr addr, uint64_t val,
473                                unsigned size)
474 {
475     CUDAState *s = opaque;
476     MOS6522CUDAState *mcs = &s->mos6522_cuda;
477     MOS6522State *ms = MOS6522(mcs);
478 
479     addr = (addr >> 9) & 0xf;
480     mos6522_write(ms, addr, val, size);
481 }
482 
483 static const MemoryRegionOps mos6522_cuda_ops = {
484     .read = mos6522_cuda_read,
485     .write = mos6522_cuda_write,
486     .endianness = DEVICE_BIG_ENDIAN,
487     .valid = {
488         .min_access_size = 1,
489         .max_access_size = 1,
490     },
491 };
492 
493 static const VMStateDescription vmstate_cuda = {
494     .name = "cuda",
495     .version_id = 5,
496     .minimum_version_id = 5,
497     .fields = (VMStateField[]) {
498         VMSTATE_STRUCT(mos6522_cuda.parent_obj, CUDAState, 0, vmstate_mos6522,
499                        MOS6522State),
500         VMSTATE_UINT8(last_b, CUDAState),
501         VMSTATE_UINT8(last_acr, CUDAState),
502         VMSTATE_INT32(data_in_size, CUDAState),
503         VMSTATE_INT32(data_in_index, CUDAState),
504         VMSTATE_INT32(data_out_index, CUDAState),
505         VMSTATE_UINT8(autopoll, CUDAState),
506         VMSTATE_UINT8(autopoll_rate_ms, CUDAState),
507         VMSTATE_UINT16(adb_poll_mask, CUDAState),
508         VMSTATE_BUFFER(data_in, CUDAState),
509         VMSTATE_BUFFER(data_out, CUDAState),
510         VMSTATE_UINT32(tick_offset, CUDAState),
511         VMSTATE_TIMER_PTR(adb_poll_timer, CUDAState),
512         VMSTATE_TIMER_PTR(sr_delay_timer, CUDAState),
513         VMSTATE_END_OF_LIST()
514     }
515 };
516 
517 static void cuda_reset(DeviceState *dev)
518 {
519     CUDAState *s = CUDA(dev);
520 
521     s->data_in_size = 0;
522     s->data_in_index = 0;
523     s->data_out_index = 0;
524     s->autopoll = 0;
525 }
526 
527 static void cuda_realize(DeviceState *dev, Error **errp)
528 {
529     CUDAState *s = CUDA(dev);
530     SysBusDevice *sbd;
531     MOS6522State *ms;
532     DeviceState *d;
533     struct tm tm;
534 
535     /* Pass IRQ from 6522 */
536     d = DEVICE(&s->mos6522_cuda);
537     ms = MOS6522(d);
538     sbd = SYS_BUS_DEVICE(s);
539     sysbus_pass_irq(sbd, SYS_BUS_DEVICE(ms));
540 
541     qemu_get_timedate(&tm, 0);
542     s->tick_offset = (uint32_t)mktimegm(&tm) + RTC_OFFSET;
543 
544     s->sr_delay_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, cuda_set_sr_int, s);
545     s->sr_delay_ns = 300 * SCALE_US;
546 
547     s->adb_poll_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, cuda_adb_poll, s);
548     s->adb_poll_mask = 0xffff;
549     s->autopoll_rate_ms = 20;
550 }
551 
552 static void cuda_init(Object *obj)
553 {
554     CUDAState *s = CUDA(obj);
555     SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
556 
557     sysbus_init_child_obj(obj, "mos6522-cuda", &s->mos6522_cuda,
558                           sizeof(s->mos6522_cuda), TYPE_MOS6522_CUDA);
559 
560     memory_region_init_io(&s->mem, obj, &mos6522_cuda_ops, s, "cuda", 0x2000);
561     sysbus_init_mmio(sbd, &s->mem);
562 
563     qbus_create_inplace(&s->adb_bus, sizeof(s->adb_bus), TYPE_ADB_BUS,
564                         DEVICE(obj), "adb.0");
565 }
566 
567 static Property cuda_properties[] = {
568     DEFINE_PROP_UINT64("timebase-frequency", CUDAState, tb_frequency, 0),
569     DEFINE_PROP_END_OF_LIST()
570 };
571 
572 static void cuda_class_init(ObjectClass *oc, void *data)
573 {
574     DeviceClass *dc = DEVICE_CLASS(oc);
575 
576     dc->realize = cuda_realize;
577     dc->reset = cuda_reset;
578     dc->vmsd = &vmstate_cuda;
579     dc->props = cuda_properties;
580     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
581 }
582 
583 static const TypeInfo cuda_type_info = {
584     .name = TYPE_CUDA,
585     .parent = TYPE_SYS_BUS_DEVICE,
586     .instance_size = sizeof(CUDAState),
587     .instance_init = cuda_init,
588     .class_init = cuda_class_init,
589 };
590 
591 static void mos6522_cuda_portB_write(MOS6522State *s)
592 {
593     MOS6522CUDAState *mcs = container_of(s, MOS6522CUDAState, parent_obj);
594     CUDAState *cs = container_of(mcs, CUDAState, mos6522_cuda);
595 
596     cuda_update(cs);
597 }
598 
599 static void mos6522_cuda_reset(DeviceState *dev)
600 {
601     MOS6522State *ms = MOS6522(dev);
602     MOS6522DeviceClass *mdc = MOS6522_DEVICE_GET_CLASS(ms);
603 
604     mdc->parent_reset(dev);
605 
606     ms->timers[0].frequency = CUDA_TIMER_FREQ;
607     ms->timers[1].frequency = (SCALE_US * 6000) / 4700;
608 }
609 
610 static void mos6522_cuda_class_init(ObjectClass *oc, void *data)
611 {
612     DeviceClass *dc = DEVICE_CLASS(oc);
613     MOS6522DeviceClass *mdc = MOS6522_DEVICE_CLASS(oc);
614 
615     dc->reset = mos6522_cuda_reset;
616     mdc->portB_write = mos6522_cuda_portB_write;
617     mdc->get_timer1_counter_value = cuda_get_counter_value;
618     mdc->get_timer2_counter_value = cuda_get_counter_value;
619     mdc->get_timer1_load_time = cuda_get_load_time;
620     mdc->get_timer2_load_time = cuda_get_load_time;
621 }
622 
623 static const TypeInfo mos6522_cuda_type_info = {
624     .name = TYPE_MOS6522_CUDA,
625     .parent = TYPE_MOS6522,
626     .instance_size = sizeof(MOS6522CUDAState),
627     .class_init = mos6522_cuda_class_init,
628 };
629 
630 static void cuda_register_types(void)
631 {
632     type_register_static(&mos6522_cuda_type_info);
633     type_register_static(&cuda_type_info);
634 }
635 
636 type_init(cuda_register_types)
637