Re: [PATCH 1/6] drm/amdgpu: ih doorbell size of range changed for nbio v7.4

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On 2020-03-19 20:24, Alex Sierra wrote:
[Why]
nbio v7.4 size of ih doorbell range is 64 bit. This requires 2 DWords per register.

[How]
Change ih doorbell size from 2 to 4. This means two Dwords per ring.
Current configuration uses two ih rings.

Signed-off-by: Alex Sierra <alex.sierra@xxxxxxx>

Why is the subject "PATCH 1/6"? It makes me wonder, what are the other 5 patches. Anyway, this patch is

Reviewed-by: Felix Kuehling <Felix.Kuehling@xxxxxxx>


---
  drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
index 149d386590df..263dbb1f92ee 100644
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
@@ -185,7 +185,7 @@ static void nbio_v7_4_ih_doorbell_range(struct amdgpu_device *adev,
if (use_doorbell) {
  		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, OFFSET, doorbell_index);
-		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, SIZE, 2);
+		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, SIZE, 4);
  	} else
  		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, SIZE, 0);
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