Commit 68927514 authored by Alex Deucher's avatar Alex Deucher
Browse files

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: default avatarFrank Min <frank.min@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
parent abe1cbae

drivers/gpu/drm/amd/amdgpu/hdp_v7_0.c

+4 −2
Original line number Diff line number Diff line
@@ -31,11 +31,13 @@ 
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,

					 bool enable)