diff options
| author | Ken Wang <Qingqing.Wang@amd.com> | 2016-03-12 09:32:30 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-03-29 23:53:35 -0400 |
| commit | 536fbf946cf84ff60cdef471c23ab96058e62f39 (patch) | |
| tree | c0bfe185e68c9dfb00c3ac9ade96b9e5f1541c31 /drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h | |
| parent | 8fe733289bc00914e9ace101088857cda20a1c51 (diff) | |
| download | linux-536fbf946cf84ff60cdef471c23ab96058e62f39.tar.bz2 | |
drm/amdgpu: change wptr to 64 bits (v2)
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>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h index da702dc6e2e5..dada0a022bed 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h @@ -96,10 +96,11 @@ struct amdgpu_ring_funcs { enum amdgpu_ring_type type; uint32_t align_mask; u32 nop; + bool support_64bit_ptrs; /* ring read/write ptr handling */ - u32 (*get_rptr)(struct amdgpu_ring *ring); - u32 (*get_wptr)(struct amdgpu_ring *ring); + u64 (*get_rptr)(struct amdgpu_ring *ring); + u64 (*get_wptr)(struct amdgpu_ring *ring); void (*set_wptr)(struct amdgpu_ring *ring); /* validating and patching of IBs */ int (*parse_cs)(struct amdgpu_cs_parser *p, uint32_t ib_idx); @@ -148,13 +149,14 @@ struct amdgpu_ring { struct amdgpu_bo *ring_obj; volatile uint32_t *ring; unsigned rptr_offs; - unsigned wptr; - unsigned wptr_old; + u64 wptr; + u64 wptr_old; unsigned ring_size; unsigned max_dw; int count_dw; uint64_t gpu_addr; - uint32_t ptr_mask; + uint64_t ptr_mask; + uint32_t buf_mask; bool ready; u32 idx; u32 me; |