diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c index a425329d1897..5c13c503e61f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c @@ -24,6 +24,10 @@ #include "amdgpu.h" #include "amdgpu_sdma.h" +#define AMDGPU_CSA_SDMA_SIZE 64 +/* SDMA CSA reside in the 3rd page of CSA */ +#define AMDGPU_CSA_SDMA_OFFSET (4096 * 2) + /* * GPU SDMA IP block helpers function. */ @@ -56,3 +60,26 @@ int amdgpu_sdma_get_index_from_ring(struct amdgpu_ring *ring, uint32_t *index) return -EINVAL; } + +uint64_t amdgpu_sdma_get_csa_mc_addr(struct amdgpu_ring *ring, + unsigned vmid) +{ + struct amdgpu_device *adev = ring->adev; + uint64_t csa_mc_addr; + uint32_t index = 0; + int r; + + if (vmid == 0 || !amdgpu_mcbp) + return 0; + + r = amdgpu_sdma_get_index_from_ring(ring, &index); + + if (r || index > 31) + csa_mc_addr = 0; + else + csa_mc_addr = amdgpu_csa_vaddr(adev) + + AMDGPU_CSA_SDMA_OFFSET + + index * AMDGPU_CSA_SDMA_SIZE; + + return csa_mc_addr; +} |