Commit 79c77ac6 authored by Jinzhou Su's avatar Jinzhou Su Committed by Alex Deucher
Browse files

drm/amdgpu: Set doorbell range for gfx ring 



If there are 2 gfx rings, the doorbell lower range of second ring
will override the first ring.

Signed-off-by: default avatarJinzhou.Su <Jinzhou.Su@amd.com>
Reviewed-by: default avatarHuang Rui <ray.huang@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 3591ecd6

drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c

+5 −2
Original line number Diff line number Diff line
@@ -6357,8 +6357,11 @@ static int gfx_v10_0_gfx_mqd_init(struct amdgpu_ring *ring) 
				    DOORBELL_EN, 0);

	mqd->cp_rb_doorbell_control = tmp;



	/* set doorbell range */

	/*if there are 2 gfx rings, set the lower doorbell range of the first ring,

	 *otherwise the range of the second ring will override the first ring */

	if (ring->doorbell_index == adev->doorbell_index.gfx_ring0 << 1)

		gfx_v10_0_cp_gfx_set_doorbell(adev, ring);



	/* reset read and write pointers, similar to CP_RB0_WPTR/_RPTR */

	ring->wptr = 0;

	mqd->cp_gfx_hqd_rptr = RREG32_SOC15(GC, 0, mmCP_GFX_HQD_RPTR);