root / hw / adb.c @ a94fd955
History | View | Annotate | Download (12.4 kB)
1 |
/*
|
---|---|
2 |
* QEMU ADB support
|
3 |
*
|
4 |
* Copyright (c) 2004 Fabrice Bellard
|
5 |
*
|
6 |
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
7 |
* of this software and associated documentation files (the "Software"), to deal
|
8 |
* in the Software without restriction, including without limitation the rights
|
9 |
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
10 |
* copies of the Software, and to permit persons to whom the Software is
|
11 |
* furnished to do so, subject to the following conditions:
|
12 |
*
|
13 |
* The above copyright notice and this permission notice shall be included in
|
14 |
* all copies or substantial portions of the Software.
|
15 |
*
|
16 |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
17 |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
18 |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
19 |
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
20 |
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
21 |
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
22 |
* THE SOFTWARE.
|
23 |
*/
|
24 |
#include "hw.h" |
25 |
#include "ppc_mac.h" |
26 |
#include "console.h" |
27 |
|
28 |
/* debug ADB */
|
29 |
//#define DEBUG_ADB
|
30 |
|
31 |
#ifdef DEBUG_ADB
|
32 |
#define ADB_DPRINTF(fmt, args...) \
|
33 |
do { printf("ADB: " fmt , ##args); } while (0) |
34 |
#else
|
35 |
#define ADB_DPRINTF(fmt, args...)
|
36 |
#endif
|
37 |
|
38 |
/* ADB commands */
|
39 |
#define ADB_BUSRESET 0x00 |
40 |
#define ADB_FLUSH 0x01 |
41 |
#define ADB_WRITEREG 0x08 |
42 |
#define ADB_READREG 0x0c |
43 |
|
44 |
/* ADB device commands */
|
45 |
#define ADB_CMD_SELF_TEST 0xff |
46 |
#define ADB_CMD_CHANGE_ID 0xfe |
47 |
#define ADB_CMD_CHANGE_ID_AND_ACT 0xfd |
48 |
#define ADB_CMD_CHANGE_ID_AND_ENABLE 0x00 |
49 |
|
50 |
/* ADB default device IDs (upper 4 bits of ADB command byte) */
|
51 |
#define ADB_DONGLE 1 |
52 |
#define ADB_KEYBOARD 2 |
53 |
#define ADB_MOUSE 3 |
54 |
#define ADB_TABLET 4 |
55 |
#define ADB_MODEM 5 |
56 |
#define ADB_MISC 7 |
57 |
|
58 |
/* error codes */
|
59 |
#define ADB_RET_NOTPRESENT (-2) |
60 |
|
61 |
int adb_request(ADBBusState *s, uint8_t *obuf, const uint8_t *buf, int len) |
62 |
{ |
63 |
ADBDevice *d; |
64 |
int devaddr, cmd, i;
|
65 |
|
66 |
cmd = buf[0] & 0xf; |
67 |
if (cmd == ADB_BUSRESET) {
|
68 |
for(i = 0; i < s->nb_devices; i++) { |
69 |
d = &s->devices[i]; |
70 |
if (d->devreset) {
|
71 |
d->devreset(d); |
72 |
} |
73 |
} |
74 |
return 0; |
75 |
} |
76 |
devaddr = buf[0] >> 4; |
77 |
for(i = 0; i < s->nb_devices; i++) { |
78 |
d = &s->devices[i]; |
79 |
if (d->devaddr == devaddr) {
|
80 |
return d->devreq(d, obuf, buf, len);
|
81 |
} |
82 |
} |
83 |
return ADB_RET_NOTPRESENT;
|
84 |
} |
85 |
|
86 |
/* XXX: move that to cuda ? */
|
87 |
int adb_poll(ADBBusState *s, uint8_t *obuf)
|
88 |
{ |
89 |
ADBDevice *d; |
90 |
int olen, i;
|
91 |
uint8_t buf[1];
|
92 |
|
93 |
olen = 0;
|
94 |
for(i = 0; i < s->nb_devices; i++) { |
95 |
if (s->poll_index >= s->nb_devices)
|
96 |
s->poll_index = 0;
|
97 |
d = &s->devices[s->poll_index]; |
98 |
buf[0] = ADB_READREG | (d->devaddr << 4); |
99 |
olen = adb_request(s, obuf + 1, buf, 1); |
100 |
/* if there is data, we poll again the same device */
|
101 |
if (olen > 0) { |
102 |
obuf[0] = buf[0]; |
103 |
olen++; |
104 |
break;
|
105 |
} |
106 |
s->poll_index++; |
107 |
} |
108 |
return olen;
|
109 |
} |
110 |
|
111 |
ADBDevice *adb_register_device(ADBBusState *s, int devaddr,
|
112 |
ADBDeviceRequest *devreq, |
113 |
ADBDeviceReset *devreset, |
114 |
void *opaque)
|
115 |
{ |
116 |
ADBDevice *d; |
117 |
if (s->nb_devices >= MAX_ADB_DEVICES)
|
118 |
return NULL; |
119 |
d = &s->devices[s->nb_devices++]; |
120 |
d->bus = s; |
121 |
d->devaddr = devaddr; |
122 |
d->devreq = devreq; |
123 |
d->devreset = devreset; |
124 |
d->opaque = opaque; |
125 |
qemu_register_reset((QEMUResetHandler *)devreset, d); |
126 |
d->devreset(d); |
127 |
return d;
|
128 |
} |
129 |
|
130 |
/***************************************************************/
|
131 |
/* Keyboard ADB device */
|
132 |
|
133 |
typedef struct KBDState { |
134 |
uint8_t data[128];
|
135 |
int rptr, wptr, count;
|
136 |
} KBDState; |
137 |
|
138 |
static const uint8_t pc_to_adb_keycode[256] = { |
139 |
0, 53, 18, 19, 20, 21, 23, 22, 26, 28, 25, 29, 27, 24, 51, 48, |
140 |
12, 13, 14, 15, 17, 16, 32, 34, 31, 35, 33, 30, 36, 54, 0, 1, |
141 |
2, 3, 5, 4, 38, 40, 37, 41, 39, 50, 56, 42, 6, 7, 8, 9, |
142 |
11, 45, 46, 43, 47, 44,123, 67, 58, 49, 57,122,120, 99,118, 96, |
143 |
97, 98,100,101,109, 71,107, 89, 91, 92, 78, 86, 87, 88, 69, 83, |
144 |
84, 85, 82, 65, 0, 0, 10,103,111, 0, 0,110, 81, 0, 0, 0, |
145 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
146 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
147 |
0, 0, 0, 94, 0, 93, 0, 0, 0, 0, 0, 0,104,102, 0, 0, |
148 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 76,125, 0, 0, |
149 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,105, 0, 0, 0, 0, 0, |
150 |
0, 0, 0, 0, 0, 75, 0, 0,124, 0, 0, 0, 0, 0, 0, 0, |
151 |
0, 0, 0, 0, 0, 0, 0,115, 62,116, 0, 59, 0, 60, 0,119, |
152 |
61,121,114,117, 0, 0, 0, 0, 0, 0, 0, 55,126, 0,127, 0, |
153 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
154 |
0, 0, 0, 0, 0, 95, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
155 |
}; |
156 |
|
157 |
static void adb_kbd_put_keycode(void *opaque, int keycode) |
158 |
{ |
159 |
ADBDevice *d = opaque; |
160 |
KBDState *s = d->opaque; |
161 |
|
162 |
if (s->count < sizeof(s->data)) { |
163 |
s->data[s->wptr] = keycode; |
164 |
if (++s->wptr == sizeof(s->data)) |
165 |
s->wptr = 0;
|
166 |
s->count++; |
167 |
} |
168 |
} |
169 |
|
170 |
static int adb_kbd_poll(ADBDevice *d, uint8_t *obuf) |
171 |
{ |
172 |
static int ext_keycode; |
173 |
KBDState *s = d->opaque; |
174 |
int adb_keycode, keycode;
|
175 |
int olen;
|
176 |
|
177 |
olen = 0;
|
178 |
for(;;) {
|
179 |
if (s->count == 0) |
180 |
break;
|
181 |
keycode = s->data[s->rptr]; |
182 |
if (++s->rptr == sizeof(s->data)) |
183 |
s->rptr = 0;
|
184 |
s->count--; |
185 |
|
186 |
if (keycode == 0xe0) { |
187 |
ext_keycode = 1;
|
188 |
} else {
|
189 |
if (ext_keycode)
|
190 |
adb_keycode = pc_to_adb_keycode[keycode | 0x80];
|
191 |
else
|
192 |
adb_keycode = pc_to_adb_keycode[keycode & 0x7f];
|
193 |
obuf[0] = adb_keycode | (keycode & 0x80); |
194 |
/* NOTE: could put a second keycode if needed */
|
195 |
obuf[1] = 0xff; |
196 |
olen = 2;
|
197 |
ext_keycode = 0;
|
198 |
break;
|
199 |
} |
200 |
} |
201 |
return olen;
|
202 |
} |
203 |
|
204 |
static int adb_kbd_request(ADBDevice *d, uint8_t *obuf, |
205 |
const uint8_t *buf, int len) |
206 |
{ |
207 |
KBDState *s = d->opaque; |
208 |
int cmd, reg, olen;
|
209 |
|
210 |
if ((buf[0] & 0x0f) == ADB_FLUSH) { |
211 |
/* flush keyboard fifo */
|
212 |
s->wptr = s->rptr = s->count = 0;
|
213 |
return 0; |
214 |
} |
215 |
|
216 |
cmd = buf[0] & 0xc; |
217 |
reg = buf[0] & 0x3; |
218 |
olen = 0;
|
219 |
switch(cmd) {
|
220 |
case ADB_WRITEREG:
|
221 |
switch(reg) {
|
222 |
case 2: |
223 |
/* LED status */
|
224 |
break;
|
225 |
case 3: |
226 |
switch(buf[2]) { |
227 |
case ADB_CMD_SELF_TEST:
|
228 |
break;
|
229 |
case ADB_CMD_CHANGE_ID:
|
230 |
case ADB_CMD_CHANGE_ID_AND_ACT:
|
231 |
case ADB_CMD_CHANGE_ID_AND_ENABLE:
|
232 |
d->devaddr = buf[1] & 0xf; |
233 |
break;
|
234 |
default:
|
235 |
/* XXX: check this */
|
236 |
d->devaddr = buf[1] & 0xf; |
237 |
d->handler = buf[2];
|
238 |
break;
|
239 |
} |
240 |
} |
241 |
break;
|
242 |
case ADB_READREG:
|
243 |
switch(reg) {
|
244 |
case 0: |
245 |
olen = adb_kbd_poll(d, obuf); |
246 |
break;
|
247 |
case 1: |
248 |
break;
|
249 |
case 2: |
250 |
obuf[0] = 0x00; /* XXX: check this */ |
251 |
obuf[1] = 0x07; /* led status */ |
252 |
olen = 2;
|
253 |
break;
|
254 |
case 3: |
255 |
obuf[0] = d->handler;
|
256 |
obuf[1] = d->devaddr;
|
257 |
olen = 2;
|
258 |
break;
|
259 |
} |
260 |
break;
|
261 |
} |
262 |
return olen;
|
263 |
} |
264 |
|
265 |
static void adb_kbd_save(QEMUFile *f, void *opaque) |
266 |
{ |
267 |
KBDState *s = (KBDState *)opaque; |
268 |
|
269 |
qemu_put_buffer(f, s->data, sizeof(s->data));
|
270 |
qemu_put_sbe32s(f, &s->rptr); |
271 |
qemu_put_sbe32s(f, &s->wptr); |
272 |
qemu_put_sbe32s(f, &s->count); |
273 |
} |
274 |
|
275 |
static int adb_kbd_load(QEMUFile *f, void *opaque, int version_id) |
276 |
{ |
277 |
KBDState *s = (KBDState *)opaque; |
278 |
|
279 |
if (version_id != 1) |
280 |
return -EINVAL;
|
281 |
|
282 |
qemu_get_buffer(f, s->data, sizeof(s->data));
|
283 |
qemu_get_sbe32s(f, &s->rptr); |
284 |
qemu_get_sbe32s(f, &s->wptr); |
285 |
qemu_get_sbe32s(f, &s->count); |
286 |
|
287 |
return 0; |
288 |
} |
289 |
|
290 |
static int adb_kbd_reset(ADBDevice *d) |
291 |
{ |
292 |
KBDState *s = d->opaque; |
293 |
|
294 |
d->handler = 1;
|
295 |
d->devaddr = ADB_KEYBOARD; |
296 |
memset(s, 0, sizeof(KBDState)); |
297 |
|
298 |
return 0; |
299 |
} |
300 |
|
301 |
void adb_kbd_init(ADBBusState *bus)
|
302 |
{ |
303 |
ADBDevice *d; |
304 |
KBDState *s; |
305 |
s = qemu_mallocz(sizeof(KBDState));
|
306 |
d = adb_register_device(bus, ADB_KEYBOARD, adb_kbd_request, |
307 |
adb_kbd_reset, s); |
308 |
qemu_add_kbd_event_handler(adb_kbd_put_keycode, d); |
309 |
register_savevm("adb_kbd", -1, 1, adb_kbd_save, |
310 |
adb_kbd_load, s); |
311 |
} |
312 |
|
313 |
/***************************************************************/
|
314 |
/* Mouse ADB device */
|
315 |
|
316 |
typedef struct MouseState { |
317 |
int buttons_state, last_buttons_state;
|
318 |
int dx, dy, dz;
|
319 |
} MouseState; |
320 |
|
321 |
static void adb_mouse_event(void *opaque, |
322 |
int dx1, int dy1, int dz1, int buttons_state) |
323 |
{ |
324 |
ADBDevice *d = opaque; |
325 |
MouseState *s = d->opaque; |
326 |
|
327 |
s->dx += dx1; |
328 |
s->dy += dy1; |
329 |
s->dz += dz1; |
330 |
s->buttons_state = buttons_state; |
331 |
} |
332 |
|
333 |
|
334 |
static int adb_mouse_poll(ADBDevice *d, uint8_t *obuf) |
335 |
{ |
336 |
MouseState *s = d->opaque; |
337 |
int dx, dy;
|
338 |
|
339 |
if (s->last_buttons_state == s->buttons_state &&
|
340 |
s->dx == 0 && s->dy == 0) |
341 |
return 0; |
342 |
|
343 |
dx = s->dx; |
344 |
if (dx < -63) |
345 |
dx = -63;
|
346 |
else if (dx > 63) |
347 |
dx = 63;
|
348 |
|
349 |
dy = s->dy; |
350 |
if (dy < -63) |
351 |
dy = -63;
|
352 |
else if (dy > 63) |
353 |
dy = 63;
|
354 |
|
355 |
s->dx -= dx; |
356 |
s->dy -= dy; |
357 |
s->last_buttons_state = s->buttons_state; |
358 |
|
359 |
dx &= 0x7f;
|
360 |
dy &= 0x7f;
|
361 |
|
362 |
if (!(s->buttons_state & MOUSE_EVENT_LBUTTON))
|
363 |
dy |= 0x80;
|
364 |
if (!(s->buttons_state & MOUSE_EVENT_RBUTTON))
|
365 |
dx |= 0x80;
|
366 |
|
367 |
obuf[0] = dy;
|
368 |
obuf[1] = dx;
|
369 |
return 2; |
370 |
} |
371 |
|
372 |
static int adb_mouse_request(ADBDevice *d, uint8_t *obuf, |
373 |
const uint8_t *buf, int len) |
374 |
{ |
375 |
MouseState *s = d->opaque; |
376 |
int cmd, reg, olen;
|
377 |
|
378 |
if ((buf[0] & 0x0f) == ADB_FLUSH) { |
379 |
/* flush mouse fifo */
|
380 |
s->buttons_state = s->last_buttons_state; |
381 |
s->dx = 0;
|
382 |
s->dy = 0;
|
383 |
s->dz = 0;
|
384 |
return 0; |
385 |
} |
386 |
|
387 |
cmd = buf[0] & 0xc; |
388 |
reg = buf[0] & 0x3; |
389 |
olen = 0;
|
390 |
switch(cmd) {
|
391 |
case ADB_WRITEREG:
|
392 |
ADB_DPRINTF("write reg %d val 0x%2.2x\n", reg, buf[1]); |
393 |
switch(reg) {
|
394 |
case 2: |
395 |
break;
|
396 |
case 3: |
397 |
switch(buf[2]) { |
398 |
case ADB_CMD_SELF_TEST:
|
399 |
break;
|
400 |
case ADB_CMD_CHANGE_ID:
|
401 |
case ADB_CMD_CHANGE_ID_AND_ACT:
|
402 |
case ADB_CMD_CHANGE_ID_AND_ENABLE:
|
403 |
d->devaddr = buf[1] & 0xf; |
404 |
break;
|
405 |
default:
|
406 |
/* XXX: check this */
|
407 |
d->devaddr = buf[1] & 0xf; |
408 |
break;
|
409 |
} |
410 |
} |
411 |
break;
|
412 |
case ADB_READREG:
|
413 |
switch(reg) {
|
414 |
case 0: |
415 |
olen = adb_mouse_poll(d, obuf); |
416 |
break;
|
417 |
case 1: |
418 |
break;
|
419 |
case 3: |
420 |
obuf[0] = d->handler;
|
421 |
obuf[1] = d->devaddr;
|
422 |
olen = 2;
|
423 |
break;
|
424 |
} |
425 |
ADB_DPRINTF("read reg %d obuf[0] 0x%2.2x obuf[1] 0x%2.2x\n", reg,
|
426 |
obuf[0], obuf[1]); |
427 |
break;
|
428 |
} |
429 |
return olen;
|
430 |
} |
431 |
|
432 |
static int adb_mouse_reset(ADBDevice *d) |
433 |
{ |
434 |
MouseState *s = d->opaque; |
435 |
|
436 |
d->handler = 2;
|
437 |
d->devaddr = ADB_MOUSE; |
438 |
memset(s, 0, sizeof(MouseState)); |
439 |
|
440 |
return 0; |
441 |
} |
442 |
|
443 |
static void adb_mouse_save(QEMUFile *f, void *opaque) |
444 |
{ |
445 |
MouseState *s = (MouseState *)opaque; |
446 |
|
447 |
qemu_put_sbe32s(f, &s->buttons_state); |
448 |
qemu_put_sbe32s(f, &s->last_buttons_state); |
449 |
qemu_put_sbe32s(f, &s->dx); |
450 |
qemu_put_sbe32s(f, &s->dy); |
451 |
qemu_put_sbe32s(f, &s->dz); |
452 |
} |
453 |
|
454 |
static int adb_mouse_load(QEMUFile *f, void *opaque, int version_id) |
455 |
{ |
456 |
MouseState *s = (MouseState *)opaque; |
457 |
|
458 |
if (version_id != 1) |
459 |
return -EINVAL;
|
460 |
|
461 |
qemu_get_sbe32s(f, &s->buttons_state); |
462 |
qemu_get_sbe32s(f, &s->last_buttons_state); |
463 |
qemu_get_sbe32s(f, &s->dx); |
464 |
qemu_get_sbe32s(f, &s->dy); |
465 |
qemu_get_sbe32s(f, &s->dz); |
466 |
|
467 |
return 0; |
468 |
} |
469 |
|
470 |
void adb_mouse_init(ADBBusState *bus)
|
471 |
{ |
472 |
ADBDevice *d; |
473 |
MouseState *s; |
474 |
|
475 |
s = qemu_mallocz(sizeof(MouseState));
|
476 |
d = adb_register_device(bus, ADB_MOUSE, adb_mouse_request, |
477 |
adb_mouse_reset, s); |
478 |
qemu_add_mouse_event_handler(adb_mouse_event, d, 0, "QEMU ADB Mouse"); |
479 |
register_savevm("adb_mouse", -1, 1, adb_mouse_save, |
480 |
adb_mouse_load, s); |
481 |
} |