Commit f756dbac authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/amdgpu/hdp5.2: 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 cf424020

drivers/gpu/drm/amd/amdgpu/hdp_v5_2.c

+4 −2
Original line number Diff line number Diff line
@@ -31,14 +31,16 @@ 
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,

					     bool enable)