1 /*
2 * Copyright 2015 Rockchip Electronics Co. LTD
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define MODULE_TAG "mpp_rt"
18
19 #include <fcntl.h>
20 #include <unistd.h>
21
22 #include "mpp_env.h"
23 #include "mpp_log.h"
24 #include "mpp_common.h"
25 #include "mpp_runtime.h"
26
27 #define MAX_DTS_PATH_LEN 256
28
29 static RK_U32 mpp_rt_debug = 0;
30
31 static const char *mpp_dts_base = "/proc/device-tree/";
32
33 static const char *mpp_vpu_names[] = {
34 "vpu_service",
35 "vpu-service",
36 "vpu",
37 //"hevc_service",
38 //"hevc-service",
39 //"rkvdec",
40 //"rkvenc",
41 //"vpu_combo",
42 };
43
44 #define mpp_rt_dbg(fmt, ...) do { if (mpp_rt_debug) mpp_log(fmt, ## __VA_ARGS__); } while (0)
45
46 static const char *mpp_vpu_address[] = {
47 "", /* old kernel */
48 "@10108000", /* rk3036 */
49 "@20020000", /* rk322x */
50 "@30000000", /* rv1108 */
51 "@ff9a0000", /* rk3288/3366 */
52 "@ff350000", /* rk322xh/3328 */
53 "@ff650000", /* rk3399 */
54 };
55
56 class MppRuntimeService
57 {
58 private:
59 // avoid any unwanted function
60 MppRuntimeService();
~MppRuntimeService()61 ~MppRuntimeService() {};
62 MppRuntimeService(const MppRuntimeService &);
63 MppRuntimeService &operator=(const MppRuntimeService &);
64
65 RK_U32 allocator_valid[MPP_BUFFER_TYPE_BUTT];
66
67 public:
get_instance()68 static MppRuntimeService *get_instance() {
69 static MppRuntimeService instance;
70 return &instance;
71 }
72
73 RK_U32 get_allocator_valid(MppBufferType type);
74 };
75
get_allocator_valid(MppBufferType type)76 RK_U32 MppRuntimeService::get_allocator_valid(MppBufferType type)
77 {
78 MppBufferType buffer_type = (MppBufferType)(type & MPP_BUFFER_TYPE_MASK);
79 return (buffer_type < MPP_BUFFER_TYPE_BUTT) ? allocator_valid[buffer_type] : (0);
80 };
81
MppRuntimeService()82 MppRuntimeService::MppRuntimeService()
83 {
84 mpp_env_get_u32("mpp_rt_debug", &mpp_rt_debug, 0);
85
86 allocator_valid[MPP_BUFFER_TYPE_NORMAL] = 1;
87 allocator_valid[MPP_BUFFER_TYPE_ION] = !access("/dev/ion", F_OK | R_OK | W_OK);
88 allocator_valid[MPP_BUFFER_TYPE_DRM] = !access("/dev/dri/card0", F_OK | R_OK | W_OK);
89 allocator_valid[MPP_BUFFER_TYPE_DMA_HEAP] = !access("/dev/dma_heap", F_OK | R_OK);
90
91 if (!allocator_valid[MPP_BUFFER_TYPE_ION] &&
92 !allocator_valid[MPP_BUFFER_TYPE_DRM] &&
93 !allocator_valid[MPP_BUFFER_TYPE_DMA_HEAP]) {
94 mpp_err("can NOT found any allocator\n");
95 return;
96 }
97
98 if (allocator_valid[MPP_BUFFER_TYPE_DMA_HEAP]) {
99 mpp_rt_dbg("use dma heap allocator\n");
100 return;
101 }
102
103 if (allocator_valid[MPP_BUFFER_TYPE_ION] && !allocator_valid[MPP_BUFFER_TYPE_DRM]) {
104 mpp_rt_dbg("use ion allocator\n");
105 return;
106 }
107
108 if (!allocator_valid[MPP_BUFFER_TYPE_ION] && allocator_valid[MPP_BUFFER_TYPE_DRM]) {
109 mpp_rt_dbg("use drm allocator\n");
110 return;
111 }
112
113 if (!access("/dev/mpp_service", F_OK | R_OK | W_OK)) {
114 allocator_valid[MPP_BUFFER_TYPE_ION] = 0;
115
116 mpp_rt_dbg("use drm allocator for mpp_service\n");
117 return;
118 }
119
120 // If both ion and drm is enabled detect allocator in dts to choose one
121 // TODO: When unify dma fd kernel is completed this part will be removed.
122 if (allocator_valid[MPP_BUFFER_TYPE_ION] &&
123 allocator_valid[MPP_BUFFER_TYPE_DRM]) {
124 /* Detect hardware buffer type is ion or drm */
125 RK_U32 i, j;
126 char path[MAX_DTS_PATH_LEN];
127 RK_U32 path_len = MAX_DTS_PATH_LEN - 1;
128 RK_U32 dts_path_len = snprintf(path, path_len, "%s", mpp_dts_base);
129 char *p = path + dts_path_len;
130 RK_U32 allocator_found = 0;
131
132 path_len -= dts_path_len;
133
134 for (i = 0; i < MPP_ARRAY_ELEMS(mpp_vpu_names); i++) {
135 for (j = 0; j < MPP_ARRAY_ELEMS(mpp_vpu_address); j++) {
136 RK_U32 dev_path_len = snprintf(p, path_len, "%s%s",
137 mpp_vpu_names[i], mpp_vpu_address[j]);
138 int f_ok = access(path, F_OK);
139 if (f_ok == 0) {
140 snprintf(p + dev_path_len, path_len - dev_path_len, "/%s", "allocator");
141 f_ok = access(path, F_OK);
142 if (f_ok == 0) {
143 RK_S32 val = 0;
144 FILE *fp = fopen(path, "rb");
145 if (fp) {
146 size_t len = fread(&val, 1, 4, fp);
147 // zero for ion non-zero for drm ->
148 // zero - disable drm
149 // non-zero - disable ion
150 if (len != 4) {
151 mpp_err("failed to read dts allocator value default 0\n");
152 val = 0;
153 }
154
155 if (val == 0) {
156 allocator_valid[MPP_BUFFER_TYPE_DRM] = 0;
157 mpp_rt_dbg("found ion allocator in dts\n");
158 } else {
159 allocator_valid[MPP_BUFFER_TYPE_ION] = 0;
160 mpp_rt_dbg("found drm allocator in dts\n");
161 }
162 allocator_found = 1;
163 }
164 }
165 }
166 if (allocator_found)
167 break;
168 }
169 if (allocator_found)
170 break;
171 }
172
173 if (!allocator_found)
174 mpp_log("Can NOT found allocator in dts, enable both ion and drm\n");
175 }
176 }
177
mpp_rt_allcator_is_valid(MppBufferType type)178 RK_U32 mpp_rt_allcator_is_valid(MppBufferType type)
179 {
180 return MppRuntimeService::get_instance()->get_allocator_valid(type);
181 }
182