1 /*
2 * Copyright (C) 2010-2017 ARM Limited. All rights reserved.
3 *
4 * This program is free software and is provided to you under the terms of the GNU General Public License version 2
5 * as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
6 *
7 * A copy of the licence is included with the program, and can also be obtained from Free Software
8 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
9 */
10 #include <linux/fs.h> /* file system operations */
11 #include <linux/uaccess.h> /* user space access */
12 #include <linux/slab.h>
13
14 #include "mali_ukk.h"
15 #include "mali_osk.h"
16 #include "mali_kernel_common.h"
17 #include "mali_session.h"
18 #include "mali_ukk_wrappers.h"
19
profiling_add_event_wrapper(struct mali_session_data * session_data,_mali_uk_profiling_add_event_s __user * uargs)20 int profiling_add_event_wrapper(struct mali_session_data *session_data, _mali_uk_profiling_add_event_s __user *uargs)
21 {
22 _mali_uk_profiling_add_event_s kargs;
23 _mali_osk_errcode_t err;
24
25 MALI_CHECK_NON_NULL(uargs, -EINVAL);
26
27 if (0 != copy_from_user(&kargs, uargs, sizeof(_mali_uk_profiling_add_event_s))) {
28 return -EFAULT;
29 }
30
31 kargs.ctx = (uintptr_t)session_data;
32 err = _mali_ukk_profiling_add_event(&kargs);
33 if (_MALI_OSK_ERR_OK != err) {
34 return map_errcode(err);
35 }
36
37 return 0;
38 }
39
profiling_report_sw_counters_wrapper(struct mali_session_data * session_data,_mali_uk_sw_counters_report_s __user * uargs)40 int profiling_report_sw_counters_wrapper(struct mali_session_data *session_data, _mali_uk_sw_counters_report_s __user *uargs)
41 {
42 _mali_uk_sw_counters_report_s kargs;
43 _mali_osk_errcode_t err;
44 u32 *counter_buffer;
45 u32 __user *counters;
46
47 MALI_CHECK_NON_NULL(uargs, -EINVAL);
48
49 if (0 != copy_from_user(&kargs, uargs, sizeof(_mali_uk_sw_counters_report_s))) {
50 return -EFAULT;
51 }
52
53 /* make sure that kargs.num_counters is [at least somewhat] sane */
54 if (kargs.num_counters > 10000) {
55 MALI_DEBUG_PRINT(1, ("User space attempted to allocate too many counters.\n"));
56 return -EINVAL;
57 }
58
59 counter_buffer = (u32 *)kmalloc(sizeof(u32) * kargs.num_counters, GFP_KERNEL);
60 if (NULL == counter_buffer) {
61 return -ENOMEM;
62 }
63
64 counters = (u32 *)(uintptr_t)kargs.counters;
65
66 if (0 != copy_from_user(counter_buffer, counters, sizeof(u32) * kargs.num_counters)) {
67 kfree(counter_buffer);
68 return -EFAULT;
69 }
70
71 kargs.ctx = (uintptr_t)session_data;
72 kargs.counters = (uintptr_t)counter_buffer;
73
74 err = _mali_ukk_sw_counters_report(&kargs);
75
76 kfree(counter_buffer);
77
78 if (_MALI_OSK_ERR_OK != err) {
79 return map_errcode(err);
80 }
81
82 return 0;
83 }
84
profiling_get_stream_fd_wrapper(struct mali_session_data * session_data,_mali_uk_profiling_stream_fd_get_s __user * uargs)85 int profiling_get_stream_fd_wrapper(struct mali_session_data *session_data, _mali_uk_profiling_stream_fd_get_s __user *uargs)
86 {
87 _mali_uk_profiling_stream_fd_get_s kargs;
88 _mali_osk_errcode_t err;
89
90 MALI_CHECK_NON_NULL(uargs, -EINVAL);
91
92 if (0 != copy_from_user(&kargs, uargs, sizeof(_mali_uk_profiling_stream_fd_get_s))) {
93 return -EFAULT;
94 }
95
96 kargs.ctx = (uintptr_t)session_data;
97 err = _mali_ukk_profiling_stream_fd_get(&kargs);
98 if (_MALI_OSK_ERR_OK != err) {
99 return map_errcode(err);
100 }
101
102 if (0 != copy_to_user(uargs, &kargs, sizeof(_mali_uk_profiling_stream_fd_get_s))) {
103 return -EFAULT;
104 }
105
106 return 0;
107 }
108
profiling_control_set_wrapper(struct mali_session_data * session_data,_mali_uk_profiling_control_set_s __user * uargs)109 int profiling_control_set_wrapper(struct mali_session_data *session_data, _mali_uk_profiling_control_set_s __user *uargs)
110 {
111 _mali_uk_profiling_control_set_s kargs;
112 _mali_osk_errcode_t err;
113 u8 *kernel_control_data = NULL;
114 u8 *kernel_response_data = NULL;
115
116 MALI_CHECK_NON_NULL(uargs, -EINVAL);
117
118 if (0 != get_user(kargs.control_packet_size, &uargs->control_packet_size)) return -EFAULT;
119 if (0 != get_user(kargs.response_packet_size, &uargs->response_packet_size)) return -EFAULT;
120
121 kargs.ctx = (uintptr_t)session_data;
122
123
124 /* Sanity check about the size */
125 if (kargs.control_packet_size > PAGE_SIZE || kargs.response_packet_size > PAGE_SIZE)
126 return -EINVAL;
127
128 if (0 != kargs.control_packet_size) {
129
130 if (0 == kargs.response_packet_size)
131 return -EINVAL;
132
133 kernel_control_data = _mali_osk_calloc(1, kargs.control_packet_size);
134 if (NULL == kernel_control_data) {
135 return -ENOMEM;
136 }
137
138 kernel_response_data = _mali_osk_calloc(1, kargs.response_packet_size);
139 if (NULL == kernel_response_data) {
140 _mali_osk_free(kernel_control_data);
141 return -ENOMEM;
142 }
143
144 kargs.control_packet_data = (uintptr_t)kernel_control_data;
145 kargs.response_packet_data = (uintptr_t)kernel_response_data;
146
147 if (0 != copy_from_user((void *)(uintptr_t)kernel_control_data, (void *)(uintptr_t)uargs->control_packet_data, kargs.control_packet_size)) {
148 _mali_osk_free(kernel_control_data);
149 _mali_osk_free(kernel_response_data);
150 return -EFAULT;
151 }
152
153 err = _mali_ukk_profiling_control_set(&kargs);
154 if (_MALI_OSK_ERR_OK != err) {
155 _mali_osk_free(kernel_control_data);
156 _mali_osk_free(kernel_response_data);
157 return map_errcode(err);
158 }
159
160 if (0 != kargs.response_packet_size && 0 != copy_to_user(((void *)(uintptr_t)uargs->response_packet_data), ((void *)(uintptr_t)kargs.response_packet_data), kargs.response_packet_size)) {
161 _mali_osk_free(kernel_control_data);
162 _mali_osk_free(kernel_response_data);
163 return -EFAULT;
164 }
165
166 if (0 != put_user(kargs.response_packet_size, &uargs->response_packet_size)) {
167 _mali_osk_free(kernel_control_data);
168 _mali_osk_free(kernel_response_data);
169 return -EFAULT;
170 }
171
172 _mali_osk_free(kernel_control_data);
173 _mali_osk_free(kernel_response_data);
174 } else {
175
176 err = _mali_ukk_profiling_control_set(&kargs);
177 if (_MALI_OSK_ERR_OK != err) {
178 return map_errcode(err);
179 }
180
181 }
182 return 0;
183 }
184