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
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
|
#include <linux/compat.h>
#include <linux/fs.h>
#include <linux/uaccess.h>
#include <linux/xlog.h>
#include "mjc_kernel_driver.h"
#include "mjc_kernel_compat_driver.h"
#define MJCDBG(string, args...) xlog_printk(ANDROID_LOG_DEBUG, "MJC", "[pid=%d]"string,current->tgid,##args);
//************************************
// IO control structure
//************************************
/* See mjc_kernel_compat_driver.h for the definition of these structs */
typedef struct
{
compat_ulong_t reg;
compat_uint_t val;
compat_uint_t mask;
} compat_MJC_READ_REG_T;
typedef struct
{
compat_ulong_t reg;
compat_uint_t val;
compat_uint_t mask;
} compat_MJC_WRITE_REG_T;
typedef struct
{
compat_uint_t u4StructSize;
compat_ulong_t ulRegPAddress;
compat_ulong_t ulRegPSize;
} compat_MJC_IOCTL_REG_INFO_T;
#define MJC_IOC_MAGIC 'N'
#define COMPAT_MJC_READ_REG _IOW(MJC_IOC_MAGIC, 0x02, compat_MJC_READ_REG_T)
#define COMPAT_MJC_WRITE_REG _IOW(MJC_IOC_MAGIC, 0x03, compat_MJC_WRITE_REG_T)
#define COMPAT_MJC_REG_INFO _IOW(MJC_IOC_MAGIC, 0x07, compat_MJC_IOCTL_REG_INFO_T)
/*****************************************************************************
* FUNCTION
* compat_get_mjc_read_reg
* DESCRIPTION
*
* PARAMETERS
* None.
* RETURNS
* None.
****************************************************************************/
static int compat_get_mjc_read_reg(
compat_MJC_READ_REG_T __user *data32,
MJC_READ_REG_T __user *data)
{
compat_ulong_t reg;
compat_uint_t val;
compat_uint_t mask;
int err;
err = get_user(reg, &data32->reg);
err |= put_user(reg, &data->reg);
err |= get_user(val, &data32->val);
err |= put_user(val, &data->val);
err |= get_user(mask, &data32->mask);
err |= put_user(mask, &data->mask);
return err;
}
/*****************************************************************************
* FUNCTION
* compat_put_mjc_read_reg
* DESCRIPTION
*
* PARAMETERS
* None.
* RETURNS
* None.
****************************************************************************/
static int compat_put_mjc_read_reg(
compat_MJC_READ_REG_T __user *data32,
MJC_READ_REG_T __user *data)
{
compat_ulong_t reg;
compat_uint_t val;
compat_uint_t mask;
int err;
err = get_user(reg, &data->reg);
err |= put_user(reg, &data32->reg);
err |= get_user(val, &data->val);
err |= put_user(val, &data32->val);
err |= get_user(mask, &data->mask);
err |= put_user(mask, &data32->mask);
return err;
}
/*****************************************************************************
* FUNCTION
* compat_get_mjc_write_reg
* DESCRIPTION
*
* PARAMETERS
* None.
* RETURNS
* None.
****************************************************************************/
static int compat_get_mjc_write_reg(
compat_MJC_WRITE_REG_T __user *data32,
MJC_WRITE_REG_T __user *data)
{
compat_ulong_t reg;
compat_uint_t val;
compat_uint_t mask;
int err;
err = get_user(reg, &data32->reg);
err |= put_user(reg, &data->reg);
err |= get_user(val, &data32->val);
err |= put_user(val, &data->val);
err |= get_user(mask, &data32->mask);
err |= put_user(mask, &data->mask);
return err;
}
/*****************************************************************************
* FUNCTION
* compat_get_mjc_reg_info
* DESCRIPTION
*
* PARAMETERS
* None.
* RETURNS
* None.
****************************************************************************/
static int compat_get_mjc_reg_info(
compat_MJC_IOCTL_REG_INFO_T __user *data32,
MJC_IOCTL_REG_INFO_T __user *data)
{
compat_uint_t u4StructSize;
compat_ulong_t ulRegPAddress;
compat_ulong_t ulRegPSize;
int err;
err = get_user(u4StructSize, &data32->u4StructSize);
if (u4StructSize != sizeof(compat_MJC_IOCTL_REG_INFO_T))
{
MJCDBG("[Error] compat_get_mjc_reg_info() structure size mismatch (%d, %ld)", u4StructSize, sizeof(compat_MJC_IOCTL_REG_INFO_T));
err = -EFAULT;
}
u4StructSize = sizeof(MJC_IOCTL_REG_INFO_T);
err |= put_user(u4StructSize, &data->u4StructSize);
err |= get_user(ulRegPAddress, &data32->ulRegPAddress);
err |= put_user(ulRegPAddress, &data->ulRegPAddress);
err |= get_user(ulRegPSize, &data32->ulRegPSize);
err |= put_user(ulRegPSize, &data->ulRegPSize);
return err;
}
/*****************************************************************************
* FUNCTION
* compat_put_mjc_reg_info
* DESCRIPTION
*
* PARAMETERS
* None.
* RETURNS
* None.
****************************************************************************/
static int compat_put_mjc_reg_info(
compat_MJC_IOCTL_REG_INFO_T __user *data32,
MJC_IOCTL_REG_INFO_T __user *data)
{
//compat_uint_t u4StructSize;
compat_ulong_t ulRegPAddress;
compat_ulong_t ulRegPSize;
int err;
//err = get_user(u4StructSize, &data->u4StructSize);
//err |= put_user(u4StructSize, &data32->u4StructSize);
err = get_user(ulRegPAddress, &data->ulRegPAddress);
err |= put_user(ulRegPAddress, &data32->ulRegPAddress);
err |= get_user(ulRegPSize, &data->ulRegPSize);
err |= put_user(ulRegPSize, &data32->ulRegPSize);
return err;
}
/*****************************************************************************
* FUNCTION
* compat_mjc_ioctls
* DESCRIPTION
*
* PARAMETERS
* None.
* RETURNS
* None.
****************************************************************************/
long compat_mjc_ioctl(struct file *pfile, unsigned int u4cmd, unsigned long u4arg)
{
long ret = 0;
if (!pfile->f_op || !pfile->f_op->unlocked_ioctl)
{
MJCDBG("[Error] compat_mjc_ioctl() null pointer");
return -ENOTTY;
}
switch (u4cmd)
{
case COMPAT_MJC_READ_REG:
{
compat_MJC_READ_REG_T __user *data32;
MJC_READ_REG_T __user *data;
int err;
data32 = compat_ptr(u4arg);
data = compat_alloc_user_space(sizeof(*data));
if (data == NULL)
{
MJCDBG("[Error] compat_mjc_ioctl() COMPAT_MJC_READ_REG can't allocate user sapce");
return -EFAULT;
}
err = compat_get_mjc_read_reg(data32, data);
if (err)
{
MJCDBG("[Error] compat_mjc_ioctl() COMPAT_MJC_READ_REG, compat_get_mjc_read_reg() error");
return err;
}
ret = pfile->f_op->unlocked_ioctl(pfile, MJC_READ_REG, (unsigned long)data);
err = compat_put_mjc_read_reg(data32, data);
if (err)
{
MJCDBG("[Error] compat_mjc_ioctl() COMPAT_MJC_READ_REG, compat_put_mjc_read_reg() error");
return err;
}
}
break;
case COMPAT_MJC_WRITE_REG:
{
compat_MJC_WRITE_REG_T __user *data32;
MJC_WRITE_REG_T __user *data;
int err;
data32 = compat_ptr(u4arg);
data = compat_alloc_user_space(sizeof(*data));
if (data == NULL)
{
MJCDBG("[Error] compat_mjc_ioctl() compat_MJC_WRITE_REG_T can't allocate user sapce");
return -EFAULT;
}
err = compat_get_mjc_write_reg(data32, data);
if (err)
{
MJCDBG("[Error] compat_mjc_ioctl() compat_MJC_WRITE_REG_T, compat_get_mjc_write_reg() error");
return err;
}
ret = pfile->f_op->unlocked_ioctl(pfile, MJC_WRITE_REG, (unsigned long)data);
}
break;
case COMPAT_MJC_REG_INFO:
{
compat_MJC_IOCTL_REG_INFO_T __user *data32;
MJC_IOCTL_REG_INFO_T __user *data;
int err;
data32 = compat_ptr(u4arg);
data = compat_alloc_user_space(sizeof(*data));
if (data == NULL)
{
MJCDBG("[Error] compat_mjc_ioctl() compat_MJC_IOCTL_REG_INFO_T can't allocate user sapce");
return -EFAULT;
}
err = compat_get_mjc_reg_info(data32, data);
if (err)
{
MJCDBG("[Error] compat_mjc_ioctl() compat_MJC_IOCTL_REG_INFO_T, compat_get_mjc_reg_info() error");
return err;
}
ret = pfile->f_op->unlocked_ioctl(pfile, MJC_REG_INFO, (unsigned long)data);
err = compat_put_mjc_reg_info(data32, data);
if (err)
{
MJCDBG("[Error] compat_mjc_ioctl() COMPAT_MJC_READ_REG, compat_put_mjc_reg_info() error");
return err;
}
}
break;
case MJC_LOCKHW:
case MJC_WAITISR:
case MJC_WRITE_REG_TBL:
case MJC_CLEAR_REG_TBL:
case MJC_SOURCE_CLK:
{
ret = pfile->f_op->unlocked_ioctl(pfile, u4cmd, (unsigned long)compat_ptr(u4arg));
}
break;
default:
MJCDBG("[ERROR] compat_mjc_ioctl() No such command 0x%x!!\n", u4cmd);
break;
}
return ret;
}
|
