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drm/amdgpu: change wptr to 64 bits (v2)

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Newer asics need 64 bit wptrs.  If the wptr is now
smaller than the rptr that doesn't indicate a wrap-around
anymore.

v2: integrate Christian's comments.

Signed-off-by: Ken Wang <Qingqing.Wang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Ken Wang
2016-03-12 09:32:30 +08:00
committed by Alex Deucher
parent 8fe733289b
commit 536fbf946c
15 changed files with 107 additions and 83 deletions
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5
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
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@@ -232,7 +232,10 @@ int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring,
}
amdgpu_ring_clear_ring(ring);
}
ring->ptr_mask = (ring->ring_size / 4) - 1;
ring->buf_mask = (ring->ring_size / 4) - 1;
ring->ptr_mask = ring->funcs->support_64bit_ptrs ?
0xffffffffffffffff : ring->buf_mask;
ring->max_dw = max_dw;
if (amdgpu_debugfs_ring_init(adev, ring)) {