[PATCH 1/2] drm/amdgpu/sdma5.0: enable ctxempty interrupt

[Alex Deucher]

This is may be required for proper gfxoff operation with
SDMA workloads.

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c
index b208b81005bb..2699b8ea82ed 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c
@@ -810,6 +810,15 @@ static int sdma_v5_0_gfx_resume(struct amdgpu_device *adev)
  */
 static int sdma_v5_0_rlc_resume(struct amdgpu_device *adev)
 {
+	int i;
+	u32 sdma_cntl;
+
+	for (i = 0; i < adev->sdma.num_instances; i++) {
+		sdma_cntl = RREG32(sdma_v5_0_get_reg_offset(adev, i, mmSDMA0_CNTL));
+		sdma_cntl = REG_SET_FIELD(sdma_cntl, SDMA0_CNTL, CTXEMPTY_INT_ENABLE, 1);
+		WREG32(sdma_v5_0_get_reg_offset(adev, i, mmSDMA0_CNTL), sdma_cntl);
+	}
+
 	return 0;
 }
 
-- 
2.25.4