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gpu: nvgpu: VM map path refactoring

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Final VM mapping refactoring. Move most of the logic in the VM
map path to the common/mm/vm.c code and use the generic APIs
previously implemented to deal with comptags and map caching.

This also updates the mapped_buffer struct to finally be free
of the Linux dma_buf and scatter gather table pointers. This
is replaced with the nvgpu_os_buffer struct.

JIRA NVGPU-30
JIRA NVGPU-71
JIRA NVGPU-224

Change-Id: If5b32886221c3e5af2f3d7ddd4fa51dd487bb981
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1583987
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Alex Waterman
2017-10-20 10:26:22 -07:00
committed by mobile promotions
parent 8428c82c81
commit 01c98eb680
5 changed files with 360 additions and 251 deletions
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5
drivers/gpu/nvgpu/include/nvgpu/linux/vm.h
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@@ -44,6 +44,11 @@ struct nvgpu_os_buffer {
struct device *dev;
};
struct nvgpu_mapped_buf_priv {
struct dma_buf *dmabuf;
struct sg_table *sgt;
};
/* NVGPU_AS_MAP_BUFFER_FLAGS_DIRECT_KIND_CTRL must be set */
int nvgpu_vm_map_linux(struct vm_gk20a *vm,
struct dma_buf *dmabuf,