diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2024-11-22 11:22:51 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-12-02 17:38:05 -0500 |
| commit | c9b8dcabb52afe88413ff135a0953e3cc4128483 (patch) | |
| tree | b1c40b0b0038c268f8558fb383fecfd860831463 /drivers/gpu | |
| parent | c6c2f66372d5cba5ce85eed686901259333ed816 (diff) | |
drm/amdgpu/hdp4.0: do a posting read when flushing HDP
Need to read back to make sure the write goes through.
Cc: David Belanger <david.belanger@amd.com>
Reviewed-by: Frank Min <frank.min@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/hdp_v4_0.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/hdp_v4_0.c b/drivers/gpu/drm/amd/amdgpu/hdp_v4_0.c index e019249883fb..194026e9be33 100644 --- a/drivers/gpu/drm/amd/amdgpu/hdp_v4_0.c +++ b/drivers/gpu/drm/amd/amdgpu/hdp_v4_0.c @@ -40,10 +40,12 @@ static void hdp_v4_0_flush_hdp(struct amdgpu_device *adev, struct amdgpu_ring *ring) { - if (!ring || !ring->funcs->emit_wreg) + if (!ring || !ring->funcs->emit_wreg) { WREG32((adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2, 0); - else + RREG32((adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2); + } else { amdgpu_ring_emit_wreg(ring, (adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2, 0); + } } static void hdp_v4_0_invalidate_hdp(struct amdgpu_device *adev, @@ -54,11 +56,13 @@ static void hdp_v4_0_invalidate_hdp(struct amdgpu_device *adev, amdgpu_ip_version(adev, HDP_HWIP, 0) == IP_VERSION(4, 4, 5)) return; - if (!ring || !ring->funcs->emit_wreg) + if (!ring || !ring->funcs->emit_wreg) { WREG32_SOC15_NO_KIQ(HDP, 0, mmHDP_READ_CACHE_INVALIDATE, 1); - else + RREG32_SOC15_NO_KIQ(HDP, 0, mmHDP_READ_CACHE_INVALIDATE); + } else { amdgpu_ring_emit_wreg(ring, SOC15_REG_OFFSET( HDP, 0, mmHDP_READ_CACHE_INVALIDATE), 1); + } } static void hdp_v4_0_query_ras_error_count(struct amdgpu_device *adev, |