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| author | Alex Deucher <alexander.deucher@amd.com> | 2024-11-22 11:24:13 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-12-14 20:03:29 +0100 |
| commit | 573e70eb7e76a8f94fddadc78637cd9803ad2196 (patch) | |
| tree | b81a446e5dda7373db64c5d59d760c6ece141a89 | |
| parent | 8499665f2c2da538cb6019ca4fc4e8a3e1f0e5b3 (diff) | |
| download | linux-573e70eb7e76a8f94fddadc78637cd9803ad2196.tar.gz linux-573e70eb7e76a8f94fddadc78637cd9803ad2196.tar.bz2 linux-573e70eb7e76a8f94fddadc78637cd9803ad2196.zip | |
drm/amdgpu/hdp5.2: do a posting read when flushing HDP
commit f756dbac1ce1d5f9a2b35e3b55fa429cf6336437 upstream.
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
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/hdp_v5_2.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/hdp_v5_2.c b/drivers/gpu/drm/amd/amdgpu/hdp_v5_2.c index 29c3484ae1f1..f52552c5fa27 100644 --- a/drivers/gpu/drm/amd/amdgpu/hdp_v5_2.c +++ b/drivers/gpu/drm/amd/amdgpu/hdp_v5_2.c @@ -31,13 +31,15 @@ static void hdp_v5_2_flush_hdp(struct amdgpu_device *adev, struct amdgpu_ring *ring) { - if (!ring || !ring->funcs->emit_wreg) + if (!ring || !ring->funcs->emit_wreg) { WREG32_NO_KIQ((adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2, 0); - else + RREG32_NO_KIQ((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_v5_2_update_mem_power_gating(struct amdgpu_device *adev, |