diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2024-11-28 16:05:24 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-12-02 18:05:04 -0500 |
| commit | 689275140cb8e9f8ae59e545086fce51fb0b994a (patch) | |
| tree | bec27b2c71db5b0a981d05ed2823e491f631313d /drivers/gpu | |
| parent | abe1cbaec6cfe9fde609a15cd6a12c812282ce77 (diff) | |
drm/amdgpu/hdp7.0: 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_v7_0.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/hdp_v7_0.c b/drivers/gpu/drm/amd/amdgpu/hdp_v7_0.c index 1c99bb09e2a1..63820329f67e 100644 --- a/drivers/gpu/drm/amd/amdgpu/hdp_v7_0.c +++ b/drivers/gpu/drm/amd/amdgpu/hdp_v7_0.c @@ -31,10 +31,12 @@ static void hdp_v7_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_v7_0_update_clock_gating(struct amdgpu_device *adev, |