drm/amdgpu: introduce new doorbell assignment table for GC 9.4.3

Four basic reasons as below to do the change:
  1. number of ring expand a lot on GC 9.4.3, and adjustment on old
     assignment cannot make each ring in a continuous doorbell space.
  2. the SDMA doorbell index should not exceed 0x1FF on SDMA 4.2.2 due to
     regDOORBELLx_CTRL_ENTRY.BIF_DOORBELLx_RANGE_OFFSET_ENTRY field width.
  3. re-design the doorbell assignment and unify the calculation as
     "start + ring/inst id" will make the code much concise.
  4. only defining the START/END makes the table look simple

v2: (Lijo)
  1. replace name
  2. use num_inst_per_aid/sdma_doorbell_range instead of hardcoding

Signed-off-by: Le Ma <[email protected]>
Reviewed-by: Lijo Lazar <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

1 files changed, 1 insertions, 5 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
index 49b18cf987aa..76438f197de1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
@@ -315,11 +315,7 @@ int amdgpu_gfx_kiq_init_ring(struct amdgpu_device *adev,
 	ring->use_doorbell = true;
 	ring->xcc_id = xcc_id;
 	ring->vm_hub = AMDGPU_GFXHUB(xcc_id);
-	if (xcc_id >= 1)
-		ring->doorbell_index = (adev->doorbell_index.xcc1_kiq_start +
-					xcc_id - 1) << 1;
-	else
-		ring->doorbell_index = adev->doorbell_index.kiq << 1;
+	ring->doorbell_index = (adev->doorbell_index.kiq + xcc_id) << 1;
 
 	r = amdgpu_gfx_kiq_acquire(adev, ring, xcc_id);
 	if (r)