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

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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: changzhu <Changfeng.Zhu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
changzhu 2019-11-05 18:29:12 +08:00 committed by Alex Deucher
parent 589b64a7e3
commit 440a7a54e7
1 changed files with 7 additions and 0 deletions
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7
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
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@ -973,6 +973,13 @@ 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) &&