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| 1 | +#include "config.h" |
| 2 | +#ifdef NVIDIA_JETSON |
| 3 | + |
| 4 | + |
| 5 | +#include "CRT.h" |
| 6 | +#include "Meter.h" |
| 7 | +#include "XUtils.h" |
| 8 | +#include "linux/NvidiaJetson.h" |
| 9 | + |
| 10 | + |
| 11 | +#include <ctype.h> |
| 12 | +#include <dirent.h> |
| 13 | + |
| 14 | + |
| 15 | +/* |
| 16 | +
|
| 17 | +NVIDIA Jetson devices support is located here. |
| 18 | +
|
| 19 | +Jetson has: |
| 20 | +- one CPU temperature sensor per 8 cores. |
| 21 | +- one GPU temperature sensor, on Jetson Orin it goes off if no GPU load: user gets error on file open |
| 22 | +
|
| 23 | +The code tries to find out the correct sensors during the application startup. As an example, the sensors |
| 24 | +location for NVIDIA Jetson Orin: |
| 25 | +- CPU temperature: /sys/devices/virtual/thermal/thermal_zone0/type |
| 26 | +- GPU temperature: /sys/devices/virtual/thermal/thermal_zone1/type |
| 27 | +- GPU frequency: /sys/class/devfreq/17000000.gpu/cur_freq |
| 28 | +- GPU curr load: /sys/class/devfreq/17000000.gpu/device/load |
| 29 | +
|
| 30 | +Measure: |
| 31 | +- The GPU frequency is provided in Hz, shown in MHz. |
| 32 | +- The CPU/GPU temperatures are provided in Celsius multipled by 1000 (milli Celsius), shown in Cesius |
| 33 | +- The Farenheit support is not provided |
| 34 | +*/ |
| 35 | + |
| 36 | + |
| 37 | +/* global paths per each sensor */ |
| 38 | +char CPU_TEMP_SENSOR_PATH[64]; |
| 39 | +char GPU_TEMP_SENSOR_PATH[64]; |
| 40 | +char GPU_FREQ_SENSOR_PATH[64]; |
| 41 | +char GPU_LOAD_SENSOR_PATH[64]; |
| 42 | + |
| 43 | + |
| 44 | +static inline bool IsJetsonOrinGPU(const char *name) { |
| 45 | + return strstr(name, "gpu"); |
| 46 | +} |
| 47 | + |
| 48 | + |
| 49 | +static inline bool IsJetsonXavierGPU(const char *name) { |
| 50 | + return strstr(name, "gv11"); |
| 51 | +} |
| 52 | + |
| 53 | + |
| 54 | +static void NvidiaJetson_FindGPUDevice(void) { |
| 55 | + const struct dirent* entry; |
| 56 | + |
| 57 | + DIR* dir = opendir("/sys/class/devfreq"); |
| 58 | + if (!dir) |
| 59 | + return; |
| 60 | + |
| 61 | + while ((entry = readdir(dir)) != NULL) { |
| 62 | + const char* name = entry->d_name; |
| 63 | + |
| 64 | + if (String_eq(name, ".") || String_eq(name, "..")) |
| 65 | + continue; |
| 66 | + |
| 67 | + if (IsJetsonOrinGPU(name) || IsJetsonXavierGPU(name)) { |
| 68 | + xSnprintf(GPU_FREQ_SENSOR_PATH, sizeof(GPU_FREQ_SENSOR_PATH), "/sys/class/devfreq/%s/cur_freq", name); |
| 69 | + xSnprintf(GPU_LOAD_SENSOR_PATH, sizeof(GPU_LOAD_SENSOR_PATH), "/sys/class/devfreq/%s/device/load", name); |
| 70 | + break; |
| 71 | + } |
| 72 | + } |
| 73 | + closedir(dir); |
| 74 | +} |
| 75 | + |
| 76 | + |
| 77 | +static void NvidiaJetson_GoThroughThermalZones(void) { |
| 78 | + char path[64], content[4]; |
| 79 | + const struct dirent* entry; |
| 80 | + |
| 81 | + DIR* dir = opendir("/sys/devices/virtual/thermal"); |
| 82 | + if (!dir) |
| 83 | + return; |
| 84 | + |
| 85 | + while ((entry = readdir(dir)) != NULL && (CPU_TEMP_SENSOR_PATH[0] == 0 || GPU_TEMP_SENSOR_PATH[0] == 0)) { |
| 86 | + const char* name = entry->d_name; |
| 87 | + ssize_t ret; |
| 88 | + |
| 89 | + if (String_eq(name, ".") || String_eq(name, "..")) |
| 90 | + continue; |
| 91 | + |
| 92 | + if (!String_startsWith(name, "thermal_zone")) |
| 93 | + continue; |
| 94 | + |
| 95 | + xSnprintf(path, sizeof(path), "/sys/devices/virtual/thermal/%s/type", name); |
| 96 | + ret = xReadfile(path, content, sizeof(content)); |
| 97 | + if (ret <= 0) |
| 98 | + continue; |
| 99 | + |
| 100 | + content[0] = tolower(content[0]); |
| 101 | + content[1] = tolower(content[1]); |
| 102 | + content[2] = tolower(content[2]); |
| 103 | + content[3] = tolower(content[3]); |
| 104 | + |
| 105 | + if (CPU_TEMP_SENSOR_PATH[0] == 0 && String_startsWith(content, "cpu")) { |
| 106 | + xSnprintf(CPU_TEMP_SENSOR_PATH, sizeof(CPU_TEMP_SENSOR_PATH), "/sys/devices/virtual/thermal/%s/temp", name); |
| 107 | + } |
| 108 | + if (GPU_TEMP_SENSOR_PATH[0] == 0 && String_startsWith(content, "gpu")) { |
| 109 | + xSnprintf(GPU_TEMP_SENSOR_PATH, sizeof(GPU_TEMP_SENSOR_PATH), "/sys/devices/virtual/thermal/%s/temp", name); |
| 110 | + } |
| 111 | + } |
| 112 | + closedir(dir); |
| 113 | +} |
| 114 | + |
| 115 | + |
| 116 | +void NvidiaJetson_FindSensors(void) { |
| 117 | + NvidiaJetson_GoThroughThermalZones(); |
| 118 | + NvidiaJetson_FindGPUDevice(); |
| 119 | +} |
| 120 | + |
| 121 | + |
| 122 | +void NvidiaJetson_getCPUTemperatures(CPUData* cpus, unsigned int existingCPUs) { |
| 123 | + char buffer[22]; |
| 124 | + double temp = xReadNumberFromFile(CPU_TEMP_SENSOR_PATH, buffer, sizeof(buffer)) / 1000.0; |
| 125 | + for (unsigned int i=0; i<=existingCPUs; ++i) |
| 126 | + cpus[i].temperature = temp; |
| 127 | +} |
| 128 | + |
| 129 | + |
| 130 | +enum JetsonValues { |
| 131 | + JETSON_GPU_LOAD = 0, |
| 132 | + JETSON_GPU_TEMP = 1, |
| 133 | + JETSON_GPU_FREQ = 2, |
| 134 | + JETSON_GPU_TOTAL_COUNT, |
| 135 | +}; |
| 136 | + |
| 137 | + |
| 138 | +static void JetsonGPUMeter_updateValues(Meter* this) { |
| 139 | + char buffer[22]; |
| 140 | + this->values[JETSON_GPU_LOAD] = xReadNumberFromFile(GPU_LOAD_SENSOR_PATH, buffer, sizeof(buffer)); |
| 141 | + this->curItems = 1; /* only show bar for JETSON_GPU_LOAD */ |
| 142 | + |
| 143 | + this->values[JETSON_GPU_TEMP] = xReadNumberFromFile(GPU_TEMP_SENSOR_PATH, buffer, sizeof(buffer)) / 1000.0; |
| 144 | + this->values[JETSON_GPU_FREQ] = xReadNumberFromFile(GPU_FREQ_SENSOR_PATH, buffer, sizeof(buffer)) / 1000000.0; |
| 145 | + double percent = this->values[0] / 10.0; |
| 146 | + |
| 147 | + char c = 'C'; |
| 148 | + double gpuTemperature = this->values[JETSON_GPU_TEMP]; |
| 149 | + if (this->host->settings->degreeFahrenheit) { |
| 150 | + gpuTemperature = ConvCelsiusToFahrenheit(gpuTemperature); |
| 151 | + c = 'F'; |
| 152 | + } |
| 153 | + |
| 154 | + unsigned int gpuFrequency = this->values[JETSON_GPU_FREQ]; |
| 155 | + xSnprintf(this->txtBuffer, sizeof(this->txtBuffer), "%.1f%% %3uMHz %.1f%s%c", |
| 156 | + percent, gpuFrequency, gpuTemperature, CRT_degreeSign, c |
| 157 | + ); |
| 158 | +} |
| 159 | + |
| 160 | +static void JetsonGPUMeter_display(const Object* cast, RichString* out) { |
| 161 | + char buffer[32]; |
| 162 | + const Meter* this = (const Meter*)cast; |
| 163 | + |
| 164 | + RichString_writeAscii(out, CRT_colors[METER_TEXT], ":"); |
| 165 | + xSnprintf(buffer, sizeof(buffer), "%.1f", this->values[JETSON_GPU_LOAD]); |
| 166 | + RichString_appendAscii(out, CRT_colors[METER_VALUE], buffer); |
| 167 | + |
| 168 | + RichString_appendAscii(out, CRT_colors[METER_TEXT], " freq:"); |
| 169 | + xSnprintf(buffer, sizeof(buffer), "%3uMHz", (unsigned)this->values[JETSON_GPU_FREQ]); |
| 170 | + RichString_appendAscii(out, CRT_colors[METER_VALUE], buffer); |
| 171 | + |
| 172 | + RichString_appendAscii(out, CRT_colors[METER_TEXT], " temp:"); |
| 173 | + xSnprintf(buffer, sizeof(buffer), "%.1f%sC", this->values[JETSON_GPU_TEMP], CRT_degreeSign); |
| 174 | + RichString_appendWide(out, CRT_colors[METER_VALUE], buffer); |
| 175 | +} |
| 176 | + |
| 177 | +static const int JetsonGPUMeter_attributes[] = { |
| 178 | + DEFAULT_COLOR |
| 179 | +}; |
| 180 | + |
| 181 | +const MeterClass JetsonGPUMeter_class = { |
| 182 | + .super = { |
| 183 | + .extends = Class(Meter), |
| 184 | + .delete = Meter_delete, |
| 185 | + .display = JetsonGPUMeter_display, |
| 186 | + }, |
| 187 | + .updateValues = JetsonGPUMeter_updateValues, |
| 188 | + .defaultMode = BAR_METERMODE, |
| 189 | + .supportedModes = METERMODE_DEFAULT_SUPPORTED, |
| 190 | + .maxItems = JETSON_GPU_TOTAL_COUNT, |
| 191 | + .total = 1000.0, |
| 192 | + .attributes = JetsonGPUMeter_attributes, |
| 193 | + .name = "jetson_gpu", |
| 194 | + .uiName = "Jetson GPU", |
| 195 | + .caption = "GPU" |
| 196 | +}; |
| 197 | +#endif |
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