Merge branch 'for-next' into for-linus

1 files changed, 21 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c
index 183024d7c184..e3b2b6b4f1a6 100644
--- a/drivers/gpu/drm/amd/amdgpu/soc15.c
+++ b/drivers/gpu/drm/amd/amdgpu/soc15.c
@@ -1211,6 +1211,20 @@ static int soc15_common_sw_fini(void *handle)
 	return 0;
 }
 
+static void soc15_sdma_doorbell_range_init(struct amdgpu_device *adev)
+{
+	int i;
+
+	/* sdma doorbell range is programed by hypervisor */
+	if (!amdgpu_sriov_vf(adev)) {
+		for (i = 0; i < adev->sdma.num_instances; i++) {
+			adev->nbio.funcs->sdma_doorbell_range(adev, i,
+				true, adev->doorbell_index.sdma_engine[i] << 1,
+				adev->doorbell_index.sdma_doorbell_range);
+		}
+	}
+}
+
 static int soc15_common_hw_init(void *handle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
@@ -1230,6 +1244,13 @@ static int soc15_common_hw_init(void *handle)
 
 	/* enable the doorbell aperture */
 	soc15_enable_doorbell_aperture(adev, true);
+	/* HW doorbell routing policy: doorbell writing not
+	 * in SDMA/IH/MM/ACV range will be routed to CP. So
+	 * we need to init SDMA doorbell range prior
+	 * to CP ip block init and ring test.  IH already
+	 * happens before CP.
+	 */
+	soc15_sdma_doorbell_range_init(adev);
 
 	return 0;
 }