From 2191c4ea3c45993457baeff031477623ccf1f97e Mon Sep 17 00:00:00 2001 From: Rex Zhu Date: Wed, 31 Oct 2018 19:49:27 +0800 Subject: [PATCH 0747/2940] drm/amdgpu: Add helper function to get sdma index Get the sdma index from ring v2: refine function name Reviewed-by: Alex Deucher Reviewed-by: Flora Cui Signed-off-by: Rex Zhu Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c | 16 ++++++++++++++++ drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.h | 2 +- 2 files changed, 17 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c index 0fb9907494bb..9464906c409a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c @@ -40,3 +40,19 @@ struct amdgpu_sdma_instance * amdgpu_get_sdma_instance(struct amdgpu_ring *ring) return NULL; } + +int amdgpu_sdma_get_index_from_ring(struct amdgpu_ring *ring, uint32_t *index) +{ + struct amdgpu_device *adev = ring->adev; + int i; + + for (i = 0; i < adev->sdma.num_instances; i++) { + if (ring == &adev->sdma.instance[i].ring || + ring == &adev->sdma.instance[i].page) { + *index = i; + return 0; + } + } + + return -EINVAL; +} diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.h index 479a2459e558..79e89e3bebc4 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.h @@ -95,5 +95,5 @@ struct amdgpu_buffer_funcs { struct amdgpu_sdma_instance * amdgpu_get_sdma_instance(struct amdgpu_ring *ring); - +int amdgpu_sdma_get_index_from_ring(struct amdgpu_ring *ring, uint32_t *index); #endif -- 2.17.1