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| author | Jammy Zhou <Jammy.Zhou@amd.com> | 2015-09-01 07:56:17 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2015-09-02 19:23:58 +0300 |
| commit | 4b2f7e2ca94d58ea16e411a1f717392b91f7730a (patch) | |
| tree | ac57d4fb4dde5cbcaa860c14dd876b371c8d56c5 | |
| parent | 36f523a7c095192662286057a7eb70d583203fe5 (diff) | |
| download | linux-4b2f7e2ca94d58ea16e411a1f717392b91f7730a.tar.xz | |
drm/amdgpu: add amdgpu_get_sdma_instance helper function
This function is added to map the ring to sdma instance
Signed-off-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 0be51f998ff9..057e7ef5c0d0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -2199,6 +2199,21 @@ static inline void amdgpu_ring_write(struct amdgpu_ring *ring, uint32_t v) ring->ring_free_dw--; } +static inline struct amdgpu_sdma * amdgpu_get_sdma_instance(struct amdgpu_ring *ring) +{ + struct amdgpu_device *adev = ring->adev; + int i; + + for (i = 0; i < AMDGPU_MAX_SDMA_INSTANCES; i++) + if (&adev->sdma[i].ring == ring) + break; + + if (i < AMDGPU_MAX_SDMA_INSTANCES) + return &adev->sdma[i]; + else + return NULL; +} + /* * ASICs macro. */ |