Commit 4cbbe348 authored by Yifan Zhang's avatar Yifan Zhang Committed by Alex Deucher
Browse files

drm/amdgpu/gfx9: fix the doorbell missing when in CGPG issue. 



If GC has entered CGPG, ringing doorbell > first page doesn't wakeup GC.
Enlarge CP_MEC_DOORBELL_RANGE_UPPER to workaround this issue.

Signed-off-by: default avatarYifan Zhang <yifan1.zhang@amd.com>
Reviewed-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
parent 7de5c0d7

drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c

+5 −1
Original line number Diff line number Diff line
@@ -3673,8 +3673,12 @@ static int gfx_v9_0_kiq_init_register(struct amdgpu_ring *ring) 
	if (ring->use_doorbell) {

		WREG32_SOC15(GC, 0, mmCP_MEC_DOORBELL_RANGE_LOWER,

					(adev->doorbell_index.kiq * 2) << 2);

		/* If GC has entered CGPG, ringing doorbell > first page doesn't

		 * wakeup GC. Enlarge CP_MEC_DOORBELL_RANGE_UPPER to workaround

		 * this issue.

		 */

		WREG32_SOC15(GC, 0, mmCP_MEC_DOORBELL_RANGE_UPPER,

					(adev->doorbell_index.userqueue_end * 2) << 2);

					(adev->doorbell.size - 4));

	}



	WREG32_SOC15_RLC(GC, 0, mmCP_HQD_PQ_DOORBELL_CONTROL,