drm/amdgpu: Add multi-GPU DMA mapping helpers

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Add BO-type specific helpers functions to DMA-map and unmap
kfd_mem_attachments. Implement this functionality for userptrs by creating
one SG BO per GPU and filling it with a DMA mapping of the pages from the
original mem->bo.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Oak Zeng <Oak.Zeng@amd.com>
Acked-by: Ramesh Errabolu <Ramesh.Errabolu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Felix Kuehling 2021-04-10 03:43:58 -04:00 • committed by Alex Deucher

parent 7141394edc

commit 264fb4d332

2 changed files with 148 additions and 9 deletions

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8

drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h

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149

drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c

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