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drm/amdgpu: add independent DMA-buf export v8

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Add an DMA-buf export implementation independent of the DRM helpers.

This not only avoids the caching of DMA-buf mappings, but also
allows us to use the new dynamic locking approach.

This is also a prerequisite of unpinned DMA-buf handling.

v2: fix unintended recursion, remove debugging leftovers
v3: split out from unpinned DMA-buf work
v4: rebase on top of new no_sgt_cache flag
v5: fix some warnings by including amdgpu_dma_buf.h
v6: fix locking for non amdgpu exports
v7: rebased on new DMA-buf locking patch
v8: drop extra include

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/337949/
This commit is contained in:
Christian König
2018-05-30 14:42:24 +02:00
parent 955a72cea5
commit 6e6db2722c
3 changed files with 96 additions and 78 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.h
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@@ -25,7 +25,6 @@
#include <drm/drm_gem.h>
struct sg_table *amdgpu_gem_prime_get_sg_table(struct drm_gem_object *obj);
struct drm_gem_object *
amdgpu_gem_prime_import_sg_table(struct drm_device *dev,
struct dma_buf_attachment *attach,