[PATCH 1/2] drm/amdgpu: Add per device sdma_doorbell_range field

[Zeng, Oak]

Different ASIC has different sdma doorbell range. Add
a per device sdma_doorbell_range field and initialize
it.

Change-Id: Idd980db1a72cfb373e24ac23ba3e48bb329ed4ad
Signed-off-by: Oak Zeng <Oak.Zeng at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell.h | 2 ++
 drivers/gpu/drm/amd/amdgpu/vega10_reg_init.c | 1 +
 drivers/gpu/drm/amd/amdgpu/vega20_reg_init.c | 1 +
 3 files changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell.h
index 35a0c05..1cfec06 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell.h
@@ -72,6 +72,8 @@ struct amdgpu_doorbell_index {
 		} uvd_vce;
 	};
 	uint32_t max_assignment;
+	/* Per engine SDMA doorbell size in dword */
+	uint32_t sdma_doorbell_range;
 };
 
 typedef enum _AMDGPU_DOORBELL_ASSIGNMENT
diff --git a/drivers/gpu/drm/amd/amdgpu/vega10_reg_init.c b/drivers/gpu/drm/amd/amdgpu/vega10_reg_init.c
index b75d17b..4b5d60e 100644
--- a/drivers/gpu/drm/amd/amdgpu/vega10_reg_init.c
+++ b/drivers/gpu/drm/amd/amdgpu/vega10_reg_init.c
@@ -83,5 +83,6 @@ void vega10_doorbell_index_init(struct amdgpu_device *adev)
 	adev->doorbell_index.uvd_vce.vce_ring6_7 = AMDGPU_DOORBELL64_VCE_RING6_7;
 	/* In unit of dword doorbell */
 	adev->doorbell_index.max_assignment = AMDGPU_DOORBELL64_MAX_ASSIGNMENT << 1;
+	adev->doorbell_index.sdma_doorbell_range = 4;
 }
 
diff --git a/drivers/gpu/drm/amd/amdgpu/vega20_reg_init.c b/drivers/gpu/drm/amd/amdgpu/vega20_reg_init.c
index 63c542c..53716c5 100644
--- a/drivers/gpu/drm/amd/amdgpu/vega20_reg_init.c
+++ b/drivers/gpu/drm/amd/amdgpu/vega20_reg_init.c
@@ -86,5 +86,6 @@ void vega20_doorbell_index_init(struct amdgpu_device *adev)
 	adev->doorbell_index.uvd_vce.vce_ring4_5 = AMDGPU_VEGA20_DOORBELL64_VCE_RING4_5;
 	adev->doorbell_index.uvd_vce.vce_ring6_7 = AMDGPU_VEGA20_DOORBELL64_VCE_RING6_7;
 	adev->doorbell_index.max_assignment = AMDGPU_VEGA20_DOORBELL_MAX_ASSIGNMENT << 1;
+	adev->doorbell_index.sdma_doorbell_range = 20;
 }
 
-- 
2.7.4