Am 12.05.2017 um 10:21 schrieb Yintian Tao:
If doorbell is used for wptr update, we also need to use it
to initialize wptr to 0.
Change-Id: Ieb31a6726a9ac8d45e51f0370ef5f77dc5ec7c06
Signed-off-by: Yintian Tao <yt...@amd.com>
---
drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
b/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
index cfd968e..a154faf 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
@@ -643,8 +643,9 @@ static int sdma_v3_0_gfx_resume(struct amdgpu_device *adev)
WREG32(mmSDMA0_GFX_RB_CNTL + sdma_offsets[i], rb_cntl);
/* Initialize the ring buffer's read and write pointers */
+ ring->wptr = 0;
A bit below this code on line 662 ring->wptr is set to zero as well and
mmSDMA0_GFX_RB_WPTR written once more.
Please also fix this as well.
Regards,
Christian.
WREG32(mmSDMA0_GFX_RB_RPTR + sdma_offsets[i], 0);
- WREG32(mmSDMA0_GFX_RB_WPTR + sdma_offsets[i], 0);
+ sdma_v3_0_ring_set_wptr(ring);
WREG32(mmSDMA0_GFX_IB_RPTR + sdma_offsets[i], 0);
WREG32(mmSDMA0_GFX_IB_OFFSET + sdma_offsets[i], 0);
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