Commit 11c61089 authored by changzhu's avatar changzhu Committed by Alex Deucher
Browse files

drm/amdgpu: add warning for GRBM 1-cycle delay issue in gfx9 



It needs to add warning to update firmware in gfx9
in case that firmware is too old to have function to
realize dummy read in cp firmware.

Signed-off-by: default avatarchangzhu <Changfeng.Zhu@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent a6522a5c

drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c

+7 −0
Original line number Diff line number Diff line
@@ -986,6 +986,13 @@ static void gfx_v9_0_check_fw_write_wait(struct amdgpu_device *adev) 
	adev->gfx.me_fw_write_wait = false;

	adev->gfx.mec_fw_write_wait = false;



	if ((adev->gfx.mec_fw_version < 0x000001a5) ||

	    (adev->gfx.mec_feature_version < 46) ||

	    (adev->gfx.pfp_fw_version < 0x000000b7) ||

	    (adev->gfx.pfp_feature_version < 46))

		DRM_WARN_ONCE("Warning: check cp_fw_version and update it to realize \

			      GRBM requires 1-cycle delay in cp firmware\n");



	switch (adev->asic_type) {

	case CHIP_VEGA10:

		if ((adev->gfx.me_fw_version >= 0x0000009c) &&

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