From: Alex Deucher <alexander.deucher@amd.com>
Date: Mon, 12 Jun 2017 22:55:22 -0400
Subject: drm/amdgpu/gfx9: fix compute ring doorbell index
Git-commit: 7366af81da3d064365f5bb7a484925fd46081484
Patch-mainline: v4.13-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
This got lost when the code was revamped. Copy/paste bug from
gfx8.
Reported-by: Evan Quan <evan.quan@amd.com>
Fixes: 78c168342 (drm/amdgpu: allow split of queues with kfd at queue granularity v4)
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -1281,7 +1281,7 @@ static int gfx_v9_0_compute_ring_init(st
ring->ring_obj = NULL;
ring->use_doorbell = true;
- ring->doorbell_index = AMDGPU_DOORBELL_MEC_RING0 + ring_id;
+ ring->doorbell_index = (AMDGPU_DOORBELL_MEC_RING0 + ring_id) << 1;
ring->eop_gpu_addr = adev->gfx.mec.hpd_eop_gpu_addr
+ (ring_id * GFX9_MEC_HPD_SIZE);
sprintf(ring->name, "comp_%d.%d.%d", ring->me, ring->pipe, ring->queue);