drm/amdgpu/gmc9: disable partial wr rmw if ECC is not enabled

The vbios mistakenly sets this bit on some boards without ECC.
This can lead to reduced performance in some workloads.  Disable
the bit if the board does not have ECC.

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2018-05-10 15:15:12 -05:00
Родитель 1ca2393b73
Коммит e1d1a7729a
1 изменённых файлов: 1 добавлений и 0 удалений

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@ -675,6 +675,7 @@ static int gmc_v9_0_late_init(void *handle)
DRM_INFO("ECC is active.\n");
} else if (r == 0) {
DRM_INFO("ECC is not present.\n");
adev->df_funcs->enable_ecc_force_par_wr_rmw(adev, false);
} else {
DRM_ERROR("gmc_v9_0_ecc_available() failed. r: %d\n", r);
return r;