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drm/amdgpu/hdp7.0: do a posting read when flushing HDP

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Need to read back to make sure the write goes through.

Cc: David Belanger <[email protected]>
Reviewed-by: Frank Min <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Cc: [email protected]
This commit is contained in:
Alex Deucher committed 2024-12-02 18:05:04 -05:00
1 parent abe1cbaec6
commit 689275140c
1 file changed
+4 -2
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drivers/gpu/drm/amd/amdgpu/hdp_v7_0.c
+4 -2
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@@ -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,