root / hw / adb.c @ 819e712b
History | View | Annotate | Download (8.7 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 "vl.h" |
25 |
|
26 |
/* ADB commands */
|
27 |
#define ADB_BUSRESET 0x00 |
28 |
#define ADB_FLUSH 0x01 |
29 |
#define ADB_WRITEREG 0x08 |
30 |
#define ADB_READREG 0x0c |
31 |
|
32 |
/* ADB device commands */
|
33 |
#define ADB_CMD_SELF_TEST 0xff |
34 |
#define ADB_CMD_CHANGE_ID 0xfe |
35 |
#define ADB_CMD_CHANGE_ID_AND_ACT 0xfd |
36 |
#define ADB_CMD_CHANGE_ID_AND_ENABLE 0x00 |
37 |
|
38 |
/* ADB default device IDs (upper 4 bits of ADB command byte) */
|
39 |
#define ADB_DONGLE 1 |
40 |
#define ADB_KEYBOARD 2 |
41 |
#define ADB_MOUSE 3 |
42 |
#define ADB_TABLET 4 |
43 |
#define ADB_MODEM 5 |
44 |
#define ADB_MISC 7 |
45 |
|
46 |
#define ADB_RET_OK 0 |
47 |
#define ADB_RET_INUSE 1 |
48 |
#define ADB_RET_NOTPRESENT 2 |
49 |
#define ADB_RET_TIMEOUT 3 |
50 |
#define ADB_RET_UNEXPECTED_RESULT 4 |
51 |
#define ADB_RET_REQUEST_ERROR 5 |
52 |
#define ADB_RET_BUS_ERROR 6 |
53 |
|
54 |
|
55 |
static void adb_send_packet1(ADBBusState *s, uint8_t reply) |
56 |
{ |
57 |
adb_send_packet(s, &reply, 1);
|
58 |
} |
59 |
|
60 |
void adb_receive_packet(ADBBusState *s, const uint8_t *buf, int len) |
61 |
{ |
62 |
ADBDevice *d; |
63 |
int devaddr, cmd, i;
|
64 |
uint8_t obuf[4];
|
65 |
|
66 |
cmd = buf[0] & 0xf; |
67 |
devaddr = buf[0] >> 4; |
68 |
if (buf[1] == ADB_BUSRESET) { |
69 |
obuf[0] = 0x00; |
70 |
obuf[1] = 0x00; |
71 |
adb_send_packet(s, obuf, 2);
|
72 |
return;
|
73 |
} |
74 |
if (cmd == ADB_FLUSH) {
|
75 |
obuf[0] = 0x00; |
76 |
obuf[1] = 0x00; |
77 |
adb_send_packet(s, obuf, 2);
|
78 |
return;
|
79 |
} |
80 |
|
81 |
for(i = 0; i < s->nb_devices; i++) { |
82 |
d = &s->devices[i]; |
83 |
if (d->devaddr == devaddr) {
|
84 |
d->receive_packet(d, buf, len); |
85 |
return;
|
86 |
} |
87 |
} |
88 |
adb_send_packet1(s, ADB_RET_NOTPRESENT); |
89 |
} |
90 |
|
91 |
ADBDevice *adb_register_device(ADBBusState *s, int devaddr,
|
92 |
ADBDeviceReceivePacket *receive_packet, |
93 |
void *opaque)
|
94 |
{ |
95 |
ADBDevice *d; |
96 |
if (s->nb_devices >= MAX_ADB_DEVICES)
|
97 |
return NULL; |
98 |
d = &s->devices[s->nb_devices++]; |
99 |
d->bus = s; |
100 |
d->devaddr = devaddr; |
101 |
d->receive_packet = receive_packet; |
102 |
d->opaque = opaque; |
103 |
return d;
|
104 |
} |
105 |
|
106 |
/***************************************************************/
|
107 |
/* Keyboard ADB device */
|
108 |
|
109 |
static const uint8_t pc_to_adb_keycode[256] = { |
110 |
0, 53, 18, 19, 20, 21, 23, 22, 26, 28, 25, 29, 27, 24, 51, 48, |
111 |
12, 13, 14, 15, 17, 16, 32, 34, 31, 35, 33, 30, 36, 54, 0, 1, |
112 |
2, 3, 5, 4, 38, 40, 37, 41, 39, 50, 56, 42, 6, 7, 8, 9, |
113 |
11, 45, 46, 43, 47, 44,123, 67, 58, 49, 57,122,120, 99,118, 96, |
114 |
97, 98,100,101,109, 71,107, 89, 91, 92, 78, 86, 87, 88, 69, 83, |
115 |
84, 85, 82, 65, 0, 0, 10,103,111, 0, 0, 0, 0, 0, 0, 0, |
116 |
76,125, 75,105,124,110,115, 62,116, 59, 60,119, 61,121,114,117, |
117 |
0, 0, 0, 0,127, 81, 0,113, 0, 0, 0, 0, 95, 55, 0, 0, |
118 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
119 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
120 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
121 |
0, 0, 0, 0, 0, 94, 0, 93, 0, 0, 0, 0, 0, 0,104,102, |
122 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
123 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
124 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
125 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
126 |
}; |
127 |
|
128 |
static void adb_kbd_put_keycode(void *opaque, int keycode) |
129 |
{ |
130 |
static int ext_keycode; |
131 |
ADBDevice *d = opaque; |
132 |
uint8_t buf[4];
|
133 |
int adb_keycode;
|
134 |
|
135 |
if (keycode == 0xe0) { |
136 |
ext_keycode = 1;
|
137 |
} else {
|
138 |
|
139 |
if (ext_keycode)
|
140 |
adb_keycode = pc_to_adb_keycode[keycode | 0x80];
|
141 |
else
|
142 |
adb_keycode = pc_to_adb_keycode[keycode & 0x7f];
|
143 |
|
144 |
buf[0] = 0x40; |
145 |
buf[1] = (d->devaddr << 4) | 0x0c; |
146 |
buf[2] = adb_keycode | (keycode & 0x80); |
147 |
buf[3] = 0xff; |
148 |
adb_send_packet(d->bus, buf, 4);
|
149 |
ext_keycode = 0;
|
150 |
} |
151 |
} |
152 |
|
153 |
static void adb_kbd_receive_packet(ADBDevice *d, const uint8_t *buf, int len) |
154 |
{ |
155 |
int cmd, reg;
|
156 |
uint8_t obuf[4];
|
157 |
|
158 |
cmd = buf[0] & 0xc; |
159 |
reg = buf[0] & 0x3; |
160 |
switch(cmd) {
|
161 |
case ADB_WRITEREG:
|
162 |
switch(reg) {
|
163 |
case 2: |
164 |
/* LED status */
|
165 |
adb_send_packet1(d->bus, ADB_RET_OK); |
166 |
break;
|
167 |
case 3: |
168 |
switch(buf[2]) { |
169 |
case ADB_CMD_SELF_TEST:
|
170 |
adb_send_packet1(d->bus, ADB_RET_OK); |
171 |
break;
|
172 |
case ADB_CMD_CHANGE_ID:
|
173 |
case ADB_CMD_CHANGE_ID_AND_ACT:
|
174 |
case ADB_CMD_CHANGE_ID_AND_ENABLE:
|
175 |
d->devaddr = buf[1] & 0xf; |
176 |
adb_send_packet1(d->bus, ADB_RET_OK); |
177 |
break;
|
178 |
default:
|
179 |
/* XXX: check this */
|
180 |
d->devaddr = buf[1] & 0xf; |
181 |
d->handler = buf[2];
|
182 |
adb_send_packet1(d->bus, ADB_RET_OK); |
183 |
break;
|
184 |
} |
185 |
} |
186 |
break;
|
187 |
case ADB_READREG:
|
188 |
switch(reg) {
|
189 |
case 1: |
190 |
adb_send_packet1(d->bus, ADB_RET_OK); |
191 |
break;
|
192 |
case 2: |
193 |
obuf[0] = ADB_RET_OK;
|
194 |
obuf[1] = 0x00; /* XXX: check this */ |
195 |
obuf[2] = 0x07; /* led status */ |
196 |
adb_send_packet(d->bus, obuf, 3);
|
197 |
break;
|
198 |
case 3: |
199 |
obuf[0] = ADB_RET_OK;
|
200 |
obuf[1] = d->handler;
|
201 |
obuf[2] = d->devaddr;
|
202 |
adb_send_packet(d->bus, obuf, 3);
|
203 |
break;
|
204 |
} |
205 |
break;
|
206 |
} |
207 |
} |
208 |
|
209 |
void adb_kbd_init(ADBBusState *bus)
|
210 |
{ |
211 |
ADBDevice *d; |
212 |
|
213 |
d = adb_register_device(bus, ADB_KEYBOARD, adb_kbd_receive_packet, NULL);
|
214 |
qemu_add_kbd_event_handler(adb_kbd_put_keycode, d); |
215 |
} |
216 |
|
217 |
/***************************************************************/
|
218 |
/* Mouse ADB device */
|
219 |
|
220 |
static void adb_mouse_event(void *opaque, |
221 |
int dx1, int dy1, int dz1, int buttons_state) |
222 |
{ |
223 |
ADBDevice *d = opaque; |
224 |
uint8_t buf[4];
|
225 |
int dx, dy;
|
226 |
|
227 |
dx = dx1; |
228 |
if (dx < -63) |
229 |
dx = -63;
|
230 |
else if (dx > 63) |
231 |
dx = 63;
|
232 |
|
233 |
dy = dy1; |
234 |
if (dy < -63) |
235 |
dy = -63;
|
236 |
else if (dy > 63) |
237 |
dy = 63;
|
238 |
|
239 |
dx &= 0x7f;
|
240 |
dy &= 0x7f;
|
241 |
|
242 |
if (buttons_state & MOUSE_EVENT_LBUTTON)
|
243 |
dy |= 0x80;
|
244 |
if (buttons_state & MOUSE_EVENT_RBUTTON)
|
245 |
dx |= 0x80;
|
246 |
|
247 |
buf[0] = 0x40; |
248 |
buf[1] = (d->devaddr << 4) | 0x0c; |
249 |
buf[2] = dy;
|
250 |
buf[3] = dx;
|
251 |
adb_send_packet(d->bus, buf, 4);
|
252 |
} |
253 |
|
254 |
static void adb_mouse_receive_packet(ADBDevice *d, const uint8_t *buf, int len) |
255 |
{ |
256 |
int cmd, reg;
|
257 |
uint8_t obuf[4];
|
258 |
|
259 |
cmd = buf[0] & 0xc; |
260 |
reg = buf[0] & 0x3; |
261 |
switch(cmd) {
|
262 |
case ADB_WRITEREG:
|
263 |
switch(reg) {
|
264 |
case 2: |
265 |
adb_send_packet1(d->bus, ADB_RET_OK); |
266 |
break;
|
267 |
case 3: |
268 |
switch(buf[2]) { |
269 |
case ADB_CMD_SELF_TEST:
|
270 |
adb_send_packet1(d->bus, ADB_RET_OK); |
271 |
break;
|
272 |
case ADB_CMD_CHANGE_ID:
|
273 |
case ADB_CMD_CHANGE_ID_AND_ACT:
|
274 |
case ADB_CMD_CHANGE_ID_AND_ENABLE:
|
275 |
d->devaddr = buf[1] & 0xf; |
276 |
adb_send_packet1(d->bus, ADB_RET_OK); |
277 |
break;
|
278 |
default:
|
279 |
/* XXX: check this */
|
280 |
d->devaddr = buf[1] & 0xf; |
281 |
adb_send_packet1(d->bus, ADB_RET_OK); |
282 |
break;
|
283 |
} |
284 |
} |
285 |
break;
|
286 |
case ADB_READREG:
|
287 |
switch(reg) {
|
288 |
case 1: |
289 |
adb_send_packet1(d->bus, ADB_RET_OK); |
290 |
break;
|
291 |
case 3: |
292 |
obuf[0] = ADB_RET_OK;
|
293 |
obuf[1] = d->handler;
|
294 |
obuf[2] = d->devaddr;
|
295 |
adb_send_packet(d->bus, obuf, 3);
|
296 |
break;
|
297 |
} |
298 |
break;
|
299 |
} |
300 |
} |
301 |
|
302 |
void adb_mouse_init(ADBBusState *bus)
|
303 |
{ |
304 |
ADBDevice *d; |
305 |
|
306 |
d = adb_register_device(bus, ADB_MOUSE, adb_mouse_receive_packet, NULL);
|
307 |
qemu_add_mouse_event_handler(adb_mouse_event, d); |
308 |
} |