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
256
257
|
/*
*
* Open Hack'Ware BIOS ADB bus support, ported to OpenBIOS
*
* Copyright (c) 2005 Jocelyn Mayer
* Copyright (c) 2005 Stefan Reinauer
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License V2
* as published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
*/
#include "config.h"
#include "libopenbios/bindings.h"
#include "libc/vsprintf.h"
#include "adb_bus.h"
#include "adb_kbd.h"
#include "adb_mouse.h"
DECLARE_UNNAMED_NODE( adb, INSTALL_OPEN, sizeof(int));
static void
adb_initialize (int *idx)
{
phandle_t ph=get_cur_dev();
push_str("adb");
fword("device-type");
set_property(ph, "compatible", "adb", 4);
set_int_property(ph, "#address-cells", 1);
set_int_property(ph, "#size-cells", 0);
}
static void
adb_open(int *idx)
{
RET(-1);
}
static void
adb_close(int *idx)
{
}
NODE_METHODS( adb ) = {
{ NULL, adb_initialize },
{ "open", adb_open },
{ "close", adb_close },
};
adb_bus_t *adb_bus_new (void *host,
int (*req)(void *host, const uint8_t *snd_buf,
int len, uint8_t *rcv_buf))
{
adb_bus_t *new;
new = malloc(sizeof(adb_bus_t));
if (new == NULL)
return NULL;
new->host = host;
new->req = req;
return new;
}
/* Check and relocate all ADB devices as suggested in
* ADB_manager Apple documentation
*/
int adb_bus_init (char *path, adb_bus_t *bus)
{
char buf[64];
uint8_t buffer[ADB_BUF_SIZE];
uint8_t adb_addresses[16] =
{ 8, 9, 10, 11, 12, 13, 14, -1, -1, -1, -1, -1, -1, -1, 0, };
adb_dev_t tmp_device, **cur;
int address;
int reloc = 0, next_free = 7;
int keep;
snprintf(buf, sizeof(buf), "%s/adb", path);
REGISTER_NAMED_NODE( adb, buf);
/* Reset the bus */
// ADB_DPRINTF("\n");
adb_reset(bus);
cur = &bus->devices;
memset(&tmp_device, 0, sizeof(adb_dev_t));
tmp_device.bus = bus;
for (address = 1; address < 8 && adb_addresses[reloc] > 0;) {
if (address == ADB_RES) {
/* Reserved */
address++;
continue;
}
//ADB_DPRINTF("Check device on ADB address %d\n", address);
tmp_device.addr = address;
switch (adb_reg_get(&tmp_device, 3, buffer)) {
case 0:
//ADB_DPRINTF("No device on ADB address %d\n", address);
/* Register this address as free */
if (adb_addresses[next_free] != 0)
adb_addresses[next_free++] = address;
/* Check next ADB address */
address++;
break;
case 2:
/* One device answered :
* make it available and relocate it to a free address
*/
if (buffer[0] == ADB_CHADDR) {
/* device self test failed */
ADB_DPRINTF("device on ADB address %d self-test failed "
"%02x %02x %02x\n", address,
buffer[0], buffer[1], buffer[2]);
keep = 0;
} else {
//ADB_DPRINTF("device on ADB address %d self-test OK\n",
// address);
keep = 1;
}
ADB_DPRINTF("Relocate device on ADB address %d to %d (%d)\n",
address, adb_addresses[reloc], reloc);
buffer[0] = ((buffer[0] & 0x40) & ~0x90) | adb_addresses[reloc];
if (keep == 1)
buffer[0] |= 0x20;
buffer[1] = ADB_CHADDR_NOCOLL;
if (adb_reg_set(&tmp_device, 3, buffer, 2) < 0) {
ADB_DPRINTF("ADB device relocation failed\n");
return -1;
}
if (keep == 1) {
*cur = malloc(sizeof(adb_dev_t));
if (*cur == NULL) {
return -1;
}
(*cur)->type = address;
(*cur)->bus = bus;
(*cur)->addr = adb_addresses[reloc++];
/* Flush buffers */
adb_flush(*cur);
switch ((*cur)->type) {
case ADB_PROTECT:
ADB_DPRINTF("Found one protected device\n");
break;
case ADB_KEYBD:
ADB_DPRINTF("Found one keyboard on address %d\n", address);
adb_kbd_new(buf, *cur);
break;
case ADB_MOUSE:
ADB_DPRINTF("Found one mouse on address %d\n", address);
adb_mouse_new(buf, *cur);
break;
case ADB_ABS:
ADB_DPRINTF("Found one absolute positioning device\n");
break;
case ADB_MODEM:
ADB_DPRINTF("Found one modem\n");
break;
case ADB_RES:
ADB_DPRINTF("Found one ADB res device\n");
break;
case ADB_MISC:
ADB_DPRINTF("Found one ADB misc device\n");
break;
}
cur = &((*cur)->next);
}
break;
case 1:
case 3 ... 7:
/* SHOULD NOT HAPPEN : register 3 is always two bytes long */
ADB_DPRINTF("Invalid returned len for ADB register 3\n");
return -1;
case -1:
/* ADB ERROR */
ADB_DPRINTF("error gettting ADB register 3\n");
return -1;
}
}
return 0;
}
int adb_cmd (adb_dev_t *dev, uint8_t cmd, uint8_t reg,
uint8_t *buf, int len)
{
uint8_t adb_send[ADB_BUF_SIZE], adb_rcv[ADB_BUF_SIZE];
//ADB_DPRINTF("cmd: %d reg: %d len: %d\n", cmd, reg, len);
if (dev->bus == NULL || dev->bus->req == NULL) {
ADB_DPRINTF("ERROR: invalid bus !\n");
for (;;);
}
/* Sanity checks */
if (cmd != ADB_LISTEN && len != 0) {
/* No buffer transmitted but for LISTEN command */
ADB_DPRINTF("in buffer for cmd %d\n", cmd);
return -1;
}
if (cmd == ADB_LISTEN && ((len < 2 || len > 8) || buf == NULL)) {
/* Need a buffer with a regular register size for LISTEN command */
ADB_DPRINTF("no/invalid buffer for ADB_LISTEN (%d)\n", len);
return -1;
}
if ((cmd == ADB_TALK || cmd == ADB_LISTEN) && reg > 3) {
/* Need a valid register number for LISTEN and TALK commands */
ADB_DPRINTF("invalid reg for TALK/LISTEN command (%d %d)\n", cmd, reg);
return -1;
}
switch (cmd) {
case ADB_SEND_RESET:
adb_send[0] = ADB_SEND_RESET;
break;
case ADB_FLUSH:
adb_send[0] = (dev->addr << 4) | ADB_FLUSH;
break;
case ADB_LISTEN:
memcpy(adb_send + 1, buf, len);
/* No break here */
case ADB_TALK:
adb_send[0] = (dev->addr << 4) | cmd | reg;
break;
}
memset(adb_rcv, 0, ADB_BUF_SIZE);
len = (*dev->bus->req)(dev->bus->host, adb_send, len + 1, adb_rcv);
#ifdef DEBUG_ADB
//printk("%x %x %x %x\n", adb_rcv[0], adb_rcv[1], adb_rcv[2], adb_rcv[3]);
#endif
switch (len) {
case 0:
/* No data */
break;
case 2 ... 8:
/* Register transmitted */
if (buf != NULL)
memcpy(buf, adb_rcv, len);
break;
default:
/* Should never happen */
//ADB_DPRINTF("Cmd %d returned %d bytes !\n", cmd, len);
return -1;
}
//ADB_DPRINTF("retlen: %d\n", len);
return len;
}
|
