1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
|
#include "u.h"
#include "../port/lib.h"
#include "mem.h"
#include "dat.h"
#include "fns.h"
#include "../port/error.h"
#include "io.h"
#define Image IMAGE
#include <draw.h>
#include <memdraw.h>
#include <cursor.h>
#include "screen.h"
/*
* mouse types
*/
enum
{
Mouseother= 0,
Mouseserial= 1,
MousePS2= 2,
};
extern int mouseshifted;
static QLock mousectlqlock;
static int mousetype;
static int intellimouse;
static int packetsize;
static int resolution;
static int accelerated;
static int mousehwaccel;
static char mouseport[5];
enum
{
CMaccelerated,
CMhwaccel,
CMintellimouse,
CMlinear,
CMps2,
CMps2intellimouse,
CMres,
CMreset,
CMserial,
};
static Cmdtab mousectlmsg[] =
{
CMaccelerated, "accelerated", 0,
CMhwaccel, "hwaccel", 2,
CMintellimouse, "intellimouse", 1,
CMlinear, "linear", 1,
CMps2, "ps2", 1,
CMps2intellimouse, "ps2intellimouse", 1,
CMres, "res", 0,
CMreset, "reset", 1,
CMserial, "serial", 0,
};
/*
* ps/2 mouse message is three bytes
*
* byte 0 - 0 0 SDY SDX 1 M R L
* byte 1 - DX
* byte 2 - DY
*
* shift & right button is the same as middle button
*
* Intellimouse and AccuPoint with extra buttons deliver
* byte 3 - 00 or 01 or FF according to extra button state.
* extra buttons are mapped in this code to buttons 4 and 5.
* AccuPoint generates repeated events for these buttons;
* it and Intellimouse generate 'down' events only, so
* user-level code is required to generate button 'up' events
* if they are needed by the application.
* Also on laptops with AccuPoint AND external mouse, the
* controller may deliver 3 or 4 bytes according to the type
* of the external mouse; code must adapt.
*
* On the NEC Versa series (and perhaps others?) we seem to
* lose a byte from the packet every once in a while, which
* means we lose where we are in the instruction stream.
* To resynchronize, if we get a byte more than two seconds
* after the previous byte, we assume it's the first in a packet.
*/
static void
ps2mouseputc(int c, int shift)
{
static short msg[4];
static int nb;
static uchar b[] = {0, 1, 4, 5, 2, 3, 6, 7, 0, 1, 2, 3, 2, 3, 6, 7 };
static ulong lasttick;
ulong m;
int buttons, dx, dy;
shift |= mouseshifted;
m = MACHP(0)->ticks;
if(TK2SEC(m - lasttick) > 2)
nb = 0;
lasttick = m;
if(nb==0 && (c&0xc8)!=0x08)
if(intellimouse && (c==0x00 || c==0x01 || c==0xFF)){
packetsize = 4;
return;
}
msg[nb] = c;
if(++nb >= packetsize){
nb = 0;
if(msg[0] & 0x10)
msg[1] |= 0xFF00;
if(msg[0] & 0x20)
msg[2] |= 0xFF00;
buttons = b[(msg[0]&7) | (shift ? 8 : 0)];
if(intellimouse && packetsize==4){
if((msg[3]&0xc8) == 0x08){
packetsize = 3;
msg[0] = msg[3];
nb = 1;
}else{
if((msg[3] >> 3) & 1)
buttons |= 1<<3;
else if(msg[3] & 0x7)
buttons |= 1<<4;
}
}
dx = msg[1];
dy = -msg[2];
mousetrack(dx, dy, buttons, TK2MS(MACHP(0)->ticks));
}
}
/*
* set up a ps2 mouse
*/
static void
ps2mouse(void)
{
if(mousetype == MousePS2)
return;
mousetype = MousePS2;
packetsize = 3;
mousehwaccel = 1;
// i8042auxenable(ps2mouseputc);
// i8042auxcmd(0xEA); // TODO
// i8042auxcmd(0xF4);
}
/*
* The PS/2 Trackpoint multiplexor on the IBM Thinkpad T23 ignores
* acceleration commands. It is supposed to pass them on
* to the attached device, but my Logitech mouse is simply
* not behaving any differently. For such devices, we allow
* the user to use "hwaccel off" to tell us to back off to
* software acceleration even if we're using the PS/2 port.
* (Serial mice are always software accelerated.)
* For more information on the Thinkpad multiplexor, see
* http://wwwcssrv.almaden.ibm.com/trackpoint/
*/
static void
setaccelerated(int x)
{
accelerated = x;
mouseaccelerate(x);
}
static void
setlinear(void)
{
accelerated = 0;
mouseaccelerate(0);
}
static void
setres(int n)
{
resolution = n;
}
static void
setintellimouse(void)
{
intellimouse = 1;
packetsize = 4;
}
static void
resetmouse(void)
{
packetsize = 3;
}
void
mousectl(Cmdbuf *cb)
{
Cmdtab *ct;
qlock(&mousectlqlock);
if(waserror()){
qunlock(&mousectlqlock);
nexterror();
}
ct = lookupcmd(cb, mousectlmsg, nelem(mousectlmsg));
switch(ct->index){
case CMaccelerated:
setaccelerated(cb->nf == 1? 1: atoi(cb->f[1]));
break;
case CMintellimouse:
setintellimouse();
break;
case CMlinear:
setlinear();
break;
case CMps2:
intellimouse = 0;
break;
case CMps2intellimouse:
setintellimouse();
break;
case CMres:
if(cb->nf >= 2)
setres(atoi(cb->f[1]));
else
setres(1);
break;
case CMreset:
resetmouse();
if(accelerated)
setaccelerated(accelerated);
if(resolution)
setres(resolution);
if(intellimouse)
setintellimouse();
break;
case CMserial:
error("serial mice not supported");
break;
case CMhwaccel:
if(strcmp(cb->f[1], "on")==0)
mousehwaccel = 1;
else if(strcmp(cb->f[1], "off")==0)
mousehwaccel = 0;
else
cmderror(cb, "bad mouse control message");
}
qunlock(&mousectlqlock);
poperror();
}
|
