From 4b2f7e2ca94d58ea16e411a1f717392b91f7730a Mon Sep 17 00:00:00 2001 From: Jammy Zhou Date: Tue, 1 Sep 2015 12:56:17 +0800 Subject: 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 Reviewed-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) 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. */ -- cgit v1.2.3