On 2020-03-27 15:32, 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 <[email protected]>
Acked-by: Alex Deucher <[email protected]>
Reviewed-by: Felix Kuehling <[email protected]>
---
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 41c53c149852..72bdd06ed508 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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