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Change AMD overclocking to simply be setting the power_dpm_force_performance_level file for now

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This covers the MVP for now, and simply allows pinning the power level to "high"

	Full overclocking set up is somewhat more complicated, and it'll be better to implement that at the same time as the same for Nvidia, where we're currently only really setting the top end power level
This commit is contained in:
Marc Di Luzio
2019-03-07 18:51:20 +00:00
committed by Alex Smith
parent 20efaaa33f
commit 9ade4481c3
9 changed files with 156 additions and 106 deletions
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100
daemon/gpuclockctl.c
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@@ -112,16 +112,6 @@ static int get_gpu_state_nv(struct GameModeGPUInfo *info)
return 0;
}
/**
* Get the gpu state
* Populates the struct with the GPU info on the system
*/
static int get_gpu_state_amd(struct GameModeGPUInfo *info)
{
fprintf(stderr, "Fetching GPU state on AMD is currently unimplemented!\n");
return info != NULL;
}
/**
* Set the gpu state based on input parameters on Nvidia
*/
@@ -168,13 +158,46 @@ static int set_gpu_state_nv(struct GameModeGPUInfo *info)
return 0;
}
/*
* Sets the value in a file in the AMDGPU driver config
* Files are:
* /sys/class/drm/card0/device/pp_sclk_od
* /sys/class/drm/card0/device/pp_mclk_od
/**
* Get the gpu state
* Populates the struct with the GPU info on the system
*/
static int set_gpu_state_amd_file(const char *filename, long device, long value)
static int get_gpu_state_amd(struct GameModeGPUInfo *info)
{
if (info->vendor != Vendor_AMD)
return -1;
/* Get the contents of power_dpm_force_performance_level */
char path[64];
snprintf(path, 64, AMD_DRM_PATH, info->device, "power_dpm_force_performance_level");
FILE *file = fopen(path, "r");
if (!file) {
LOG_ERROR("Could not open %s for read (%s)!\n", path, strerror(errno));
return -1;
}
char buff[CONFIG_VALUE_MAX];
if (!fgets(buff, CONFIG_VALUE_MAX, file)) {
LOG_ERROR("Could not read file %s (%s)!\n", path, strerror(errno));
return -1;
}
if (fclose(file) != 0) {
LOG_ERROR("Could not close %s after reading (%s)!\n", path, strerror(errno));
return -1;
}
/* Copy in the value from the file */
strncpy(info->amd_performance_level, buff, CONFIG_VALUE_MAX);
return info == NULL;
}
/*
* Simply set an amd drm file to a value
*/
static int set_gpu_state_amd_file(const char *filename, long device, const char *value)
{
char path[64];
snprintf(path, 64, AMD_DRM_PATH, device, filename);
@@ -185,7 +208,7 @@ static int set_gpu_state_amd_file(const char *filename, long device, long value)
return -1;
}
if (fprintf(file, "%ld", value) < 0) {
if (fprintf(file, "%s", value) < 0) {
LOG_ERROR("Could not write to %s (%s)!\n", path, strerror(errno));
return -1;
}
@@ -212,12 +235,17 @@ static int set_gpu_state_amd(struct GameModeGPUInfo *info)
print_usage_and_exit();
}
// Set the the nv_core and nv_mem clock speeds using the OverDrive files
if (set_gpu_state_amd_file("pp_sclk_od", info->device, info->nv_core) != 0)
return -1;
if (set_gpu_state_amd_file("pp_mclk_od", info->device, info->nv_mem) != 0)
/* First set the amd_performance_level to the chosen setting */
if (set_gpu_state_amd_file("power_dpm_force_performance_level",
info->device,
info->amd_performance_level) != 0)
return -1;
/* TODO: If amd_performance_level is set to "manual" we need to adjust pp_table and/or
pp_od_clk_voltage see
https://dri.freedesktop.org/docs/drm/gpu/amdgpu.html#gpu-power-thermal-controls-and-monitoring
*/
return 0;
}
@@ -278,38 +306,44 @@ int main(int argc, char *argv[])
/* Get nvidia power level */
if (get_gpu_state_nv(&info) != 0)
exit(EXIT_FAILURE);
printf("%ld %ld\n", info.nv_core, info.nv_mem);
break;
case Vendor_AMD:
if (get_gpu_state_amd(&info) != 0)
exit(EXIT_FAILURE);
printf("%s\n", info.amd_performance_level);
break;
default:
printf("Currently unsupported GPU vendor 0x%04x, doing nothing!\n", (short)info.vendor);
break;
}
printf("%ld %ld\n", info.nv_core, info.nv_mem);
} else if (argc >= 6 && argc <= 7 && strncmp(argv[3], "set", 3) == 0) {
} else if (argc >= 5 && argc <= 7 && strncmp(argv[3], "set", 3) == 0) {
/* Get and verify the vendor and device */
struct GameModeGPUInfo info;
memset(&info, 0, sizeof(info));
info.vendor = get_vendor(argv[1]);
info.device = get_device(argv[2]);
info.nv_core = get_generic_value(argv[4]);
info.nv_mem = get_generic_value(argv[5]);
if (info.vendor == Vendor_NVIDIA && argc > 6)
info.nv_perf_level = get_generic_value(argv[6]);
switch (info.vendor) {
case Vendor_NVIDIA:
info.nv_core = get_generic_value(argv[4]);
info.nv_mem = get_generic_value(argv[5]);
if (argc > 6)
info.nv_perf_level = get_generic_value(argv[6]);
break;
case Vendor_AMD:
strncpy(info.amd_performance_level, argv[4], CONFIG_VALUE_MAX);
break;
default:
printf("Currently unsupported GPU vendor 0x%04x, doing nothing!\n", (short)info.vendor);
break;
}
printf("gpuclockctl setting nv_core:%ld nv_mem:%ld on device:%ld with vendor 0x%04x\n",
info.nv_core,
info.nv_mem,
printf("gpuclockctl setting values on device:%ld with vendor 0x%04x",
info.device,
(unsigned short)info.vendor);
if (info.vendor == Vendor_NVIDIA)
printf("on Performance Level %ld\n", info.nv_perf_level);
switch (info.vendor) {
case Vendor_NVIDIA:
return set_gpu_state_nv(&info);