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Implement AMD overclocking using AMDGPU

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Again, simply set values based on our inputs, with appropriate error messages
This commit is contained in:
Marc Di Luzio 2019-02-04 17:05:38 +00:00
parent d00a9997f1
commit 2aa2ca2f7d
1 changed files with 38 additions and 7 deletions
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41
daemon/gpuclockctl.c
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@ -103,6 +103,37 @@ int set_gpu_state_nv(struct GameModeGPUInfo *info)
return 0; 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
*/
static int set_gpu_state_amd_file(const char *filename, long device, long value)
{
const char *drm_path = "/sys/class/drm/card%ld/device/%s";
char path[64];
snprintf(path, 64, drm_path, device, filename);
FILE *file = fopen(path, "w");
if (!file) {
LOG_ERROR("ERROR: Could not open %s for write (%s)!\n", path, strerror(errno));
return -1;
}
if (fprintf(file, "%ld", value) < 0) {
LOG_ERROR("ERROR: Could not write to %s (%s)!\n", path, strerror(errno));
return -1;
}
if (fclose(file) != 0) {
LOG_ERROR("ERROR: Could not close %s after writing (%s)!\n", path, strerror(errno));
return -1;
}
return 0;
}
/** /**
* Set the gpu state based on input parameters on amd * Set the gpu state based on input parameters on amd
*/ */
@ -111,12 +142,12 @@ int set_gpu_state_amd(struct GameModeGPUInfo *info)
if (info->vendor != Vendor_AMD) if (info->vendor != Vendor_AMD)
return -1; return -1;
// We'll want to set both the following: // Set the the core and mem clock speeds using the OverDrive files
// core: device/pp_sclk_od (0%+ additional) if (set_gpu_state_amd_file("pp_sclk_od", info->device, info->core) != 0)
// mem: device/pp_mclk_od (0%+ additional) return -1;
// Guide from https://www.maketecheasier.com/overclock-amd-gpu-linux/ if (set_gpu_state_amd_file("pp_mclk_od", info->device, info->mem) != 0)
return -1;
fprintf(stderr, "Setting GPU parameters on AMD is currently unimplemented!\n");
return 0; return 0;
} }