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-rw-r--r--drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
index 9d325867a1aa..55342962422b 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
@@ -5350,6 +5350,15 @@ static void gfx_v10_0_constants_init(struct amdgpu_device *adev)
gfx_v10_0_get_tcc_info(adev);
adev->gfx.config.pa_sc_tile_steering_override =
gfx_v10_0_init_pa_sc_tile_steering_override(adev);
+ /* Program DB_RING_CONTROL for multiple GFX pipes
+ * Default power up value is 1.
+ * Possible values:
+ * 0 - split occlusion counters between gfx pipes
+ * 1 - all occlusion counters to pipe 0
+ * 2 - all occlusion counters to pipe 1
+ */
+ WREG32_FIELD15(GC, 0, DB_RING_CONTROL, COUNTER_CONTROL,
+ (adev->gfx.me.num_pipe_per_me > 1) ? 0 : 1);
/* XXX SH_MEM regs */
/* where to put LDS, scratch, GPUVM in FSA64 space */