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
|
/*
* Copyright (C) 2010-2012 ARM Limited. All rights reserved.
*
* This program is free software and is provided to you under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
*
* A copy of the licence is included with the program, and can also be obtained from Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <linux/fs.h> /* file system operations */
#include <asm/uaccess.h> /* user space access */
#include "mali_ukk.h"
#include "mali_osk.h"
#include "mali_kernel_common.h"
#include "mali_session.h"
#include "mali_ukk_wrappers.h"
int mem_init_wrapper(struct mali_session_data *session_data, _mali_uk_init_mem_s __user *uargs)
{
_mali_uk_init_mem_s kargs;
_mali_osk_errcode_t err;
MALI_CHECK_NON_NULL(uargs, -EINVAL);
kargs.ctx = session_data;
err = _mali_ukk_init_mem(&kargs);
if (_MALI_OSK_ERR_OK != err)
{
return map_errcode(err);
}
if (0 != put_user(kargs.mali_address_base, &uargs->mali_address_base)) goto mem_init_rollback;
if (0 != put_user(kargs.memory_size, &uargs->memory_size)) goto mem_init_rollback;
return 0;
mem_init_rollback:
{
_mali_uk_term_mem_s kargs;
kargs.ctx = session_data;
err = _mali_ukk_term_mem(&kargs);
if (_MALI_OSK_ERR_OK != err)
{
MALI_DEBUG_PRINT(4, ("reverting _mali_ukk_init_mem, as a result of failing put_user(), failed\n"));
}
}
return -EFAULT;
}
int mem_term_wrapper(struct mali_session_data *session_data, _mali_uk_term_mem_s __user *uargs)
{
_mali_uk_term_mem_s kargs;
_mali_osk_errcode_t err;
MALI_CHECK_NON_NULL(uargs, -EINVAL);
kargs.ctx = session_data;
err = _mali_ukk_term_mem(&kargs);
if (_MALI_OSK_ERR_OK != err)
{
return map_errcode(err);
}
return 0;
}
int mem_write_safe_wrapper(struct mali_session_data *session_data, _mali_uk_mem_write_safe_s __user * uargs)
{
_mali_uk_mem_write_safe_s kargs;
_mali_osk_errcode_t err;
MALI_CHECK_NON_NULL(uargs, -EINVAL);
MALI_CHECK_NON_NULL(session_data, -EINVAL);
if (0 != copy_from_user(&kargs, uargs, sizeof(_mali_uk_mem_write_safe_s)))
{
return -EFAULT;
}
kargs.ctx = session_data;
/* Check if we can access the buffers */
if (!access_ok(VERIFY_WRITE, kargs.dest, kargs.size)
|| !access_ok(VERIFY_READ, kargs.src, kargs.size))
{
return -EINVAL;
}
/* Check if size wraps */
if ((kargs.size + kargs.dest) <= kargs.dest
|| (kargs.size + kargs.src) <= kargs.src)
{
return -EINVAL;
}
err = _mali_ukk_mem_write_safe(&kargs);
if (_MALI_OSK_ERR_OK != err)
{
return map_errcode(err);
}
if (0 != put_user(kargs.size, &uargs->size))
{
return -EFAULT;
}
return 0;
}
int mem_map_ext_wrapper(struct mali_session_data *session_data, _mali_uk_map_external_mem_s __user * argument)
{
_mali_uk_map_external_mem_s uk_args;
_mali_osk_errcode_t err_code;
/* validate input */
/* the session_data pointer was validated by caller */
MALI_CHECK_NON_NULL( argument, -EINVAL);
/* get call arguments from user space. copy_from_user returns how many bytes which where NOT copied */
if ( 0 != copy_from_user(&uk_args, (void __user *)argument, sizeof(_mali_uk_map_external_mem_s)) )
{
return -EFAULT;
}
uk_args.ctx = session_data;
err_code = _mali_ukk_map_external_mem( &uk_args );
if (0 != put_user(uk_args.cookie, &argument->cookie))
{
if (_MALI_OSK_ERR_OK == err_code)
{
/* Rollback */
_mali_uk_unmap_external_mem_s uk_args_unmap;
uk_args_unmap.ctx = session_data;
uk_args_unmap.cookie = uk_args.cookie;
err_code = _mali_ukk_unmap_external_mem( &uk_args_unmap );
if (_MALI_OSK_ERR_OK != err_code)
{
MALI_DEBUG_PRINT(4, ("reverting _mali_ukk_unmap_external_mem, as a result of failing put_user(), failed\n"));
}
}
return -EFAULT;
}
/* Return the error that _mali_ukk_free_big_block produced */
return map_errcode(err_code);
}
int mem_unmap_ext_wrapper(struct mali_session_data *session_data, _mali_uk_unmap_external_mem_s __user * argument)
{
_mali_uk_unmap_external_mem_s uk_args;
_mali_osk_errcode_t err_code;
/* validate input */
/* the session_data pointer was validated by caller */
MALI_CHECK_NON_NULL( argument, -EINVAL);
/* get call arguments from user space. copy_from_user returns how many bytes which where NOT copied */
if ( 0 != copy_from_user(&uk_args, (void __user *)argument, sizeof(_mali_uk_unmap_external_mem_s)) )
{
return -EFAULT;
}
uk_args.ctx = session_data;
err_code = _mali_ukk_unmap_external_mem( &uk_args );
/* Return the error that _mali_ukk_free_big_block produced */
return map_errcode(err_code);
}
#if defined(CONFIG_MALI400_UMP)
int mem_release_ump_wrapper(struct mali_session_data *session_data, _mali_uk_release_ump_mem_s __user * argument)
{
_mali_uk_release_ump_mem_s uk_args;
_mali_osk_errcode_t err_code;
/* validate input */
/* the session_data pointer was validated by caller */
MALI_CHECK_NON_NULL( argument, -EINVAL);
/* get call arguments from user space. copy_from_user returns how many bytes which where NOT copied */
if ( 0 != copy_from_user(&uk_args, (void __user *)argument, sizeof(_mali_uk_release_ump_mem_s)) )
{
return -EFAULT;
}
uk_args.ctx = session_data;
err_code = _mali_ukk_release_ump_mem( &uk_args );
/* Return the error that _mali_ukk_free_big_block produced */
return map_errcode(err_code);
}
int mem_attach_ump_wrapper(struct mali_session_data *session_data, _mali_uk_attach_ump_mem_s __user * argument)
{
_mali_uk_attach_ump_mem_s uk_args;
_mali_osk_errcode_t err_code;
/* validate input */
/* the session_data pointer was validated by caller */
MALI_CHECK_NON_NULL( argument, -EINVAL);
/* get call arguments from user space. copy_from_user returns how many bytes which where NOT copied */
if ( 0 != copy_from_user(&uk_args, (void __user *)argument, sizeof(_mali_uk_attach_ump_mem_s)) )
{
return -EFAULT;
}
uk_args.ctx = session_data;
err_code = _mali_ukk_attach_ump_mem( &uk_args );
if (0 != put_user(uk_args.cookie, &argument->cookie))
{
if (_MALI_OSK_ERR_OK == err_code)
{
/* Rollback */
_mali_uk_release_ump_mem_s uk_args_unmap;
uk_args_unmap.ctx = session_data;
uk_args_unmap.cookie = uk_args.cookie;
err_code = _mali_ukk_release_ump_mem( &uk_args_unmap );
if (_MALI_OSK_ERR_OK != err_code)
{
MALI_DEBUG_PRINT(4, ("reverting _mali_ukk_attach_mem, as a result of failing put_user(), failed\n"));
}
}
return -EFAULT;
}
/* Return the error that _mali_ukk_map_external_ump_mem produced */
return map_errcode(err_code);
}
#endif /* CONFIG_MALI400_UMP */
int mem_query_mmu_page_table_dump_size_wrapper(struct mali_session_data *session_data, _mali_uk_query_mmu_page_table_dump_size_s __user * uargs)
{
_mali_uk_query_mmu_page_table_dump_size_s kargs;
_mali_osk_errcode_t err;
MALI_CHECK_NON_NULL(uargs, -EINVAL);
MALI_CHECK_NON_NULL(session_data, -EINVAL);
kargs.ctx = session_data;
err = _mali_ukk_query_mmu_page_table_dump_size(&kargs);
if (_MALI_OSK_ERR_OK != err) return map_errcode(err);
if (0 != put_user(kargs.size, &uargs->size)) return -EFAULT;
return 0;
}
int mem_dump_mmu_page_table_wrapper(struct mali_session_data *session_data, _mali_uk_dump_mmu_page_table_s __user * uargs)
{
_mali_uk_dump_mmu_page_table_s kargs;
_mali_osk_errcode_t err;
void *buffer;
int rc = -EFAULT;
/* validate input */
MALI_CHECK_NON_NULL(uargs, -EINVAL);
/* the session_data pointer was validated by caller */
kargs.buffer = NULL;
/* get location of user buffer */
if (0 != get_user(buffer, &uargs->buffer)) goto err_exit;
/* get size of mmu page table info buffer from user space */
if ( 0 != get_user(kargs.size, &uargs->size) ) goto err_exit;
/* verify we can access the whole of the user buffer */
if (!access_ok(VERIFY_WRITE, buffer, kargs.size)) goto err_exit;
/* allocate temporary buffer (kernel side) to store mmu page table info */
MALI_CHECK(kargs.size > 0, -ENOMEM);
kargs.buffer = _mali_osk_valloc(kargs.size);
if (NULL == kargs.buffer)
{
rc = -ENOMEM;
goto err_exit;
}
kargs.ctx = session_data;
err = _mali_ukk_dump_mmu_page_table(&kargs);
if (_MALI_OSK_ERR_OK != err)
{
rc = map_errcode(err);
goto err_exit;
}
/* copy mmu page table info back to user space and update pointers */
if (0 != copy_to_user(uargs->buffer, kargs.buffer, kargs.size) ) goto err_exit;
if (0 != put_user((kargs.register_writes - (u32 *)kargs.buffer) + (u32 *)uargs->buffer, &uargs->register_writes)) goto err_exit;
if (0 != put_user((kargs.page_table_dump - (u32 *)kargs.buffer) + (u32 *)uargs->buffer, &uargs->page_table_dump)) goto err_exit;
if (0 != put_user(kargs.register_writes_size, &uargs->register_writes_size)) goto err_exit;
if (0 != put_user(kargs.page_table_dump_size, &uargs->page_table_dump_size)) goto err_exit;
rc = 0;
err_exit:
if (kargs.buffer) _mali_osk_vfree(kargs.buffer);
return rc;
}
|
