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gpu: nvgpu: Split VM implementation out

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This patch begins splitting out the VM implementation from mm_gk20a.c and
moves it to common/linux/vm.c and common/mm/vm.c. This split is necessary
because the VM code has two portions: first, an interface for the OS
specific code to use (i.e userspace mappings), and second, a set of APIs
for the driver to use (init, cleanup, etc) which are not OS specific.

This is only the beginning of the split - there's still a lot of things
that need to be carefully moved around.

JIRA NVGPU-12
JIRA NVGPU-30

Change-Id: I3b57cba245d7daf9e4326a143b9c6217e0f28c96
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/1477743
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Alex Waterman
2017-04-24 15:26:00 -07:00
committed by mobile promotions
parent d37e8f7dcf
commit 014ace5a85
13 changed files with 661 additions and 630 deletions
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36
drivers/gpu/nvgpu/common/linux/vm_priv.h
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@@ -25,12 +25,24 @@ struct dma_buf;
struct vm_gk20a;
struct vm_gk20a_mapping_batch;
struct buffer_attrs {
struct sg_table *sgt;
u64 size;
u64 align;
u32 ctag_offset;
u32 ctag_lines;
u32 ctag_allocated_lines;
int pgsz_idx;
u8 kind_v;
u8 uc_kind_v;
bool ctag_user_mappable;
};
u64 nvgpu_vm_map(struct vm_gk20a *vm,
struct dma_buf *dmabuf,
u64 offset_align,
u32 flags /*NVGPU_AS_MAP_BUFFER_FLAGS_*/,
u32 flags,
int kind,
struct sg_table **sgt,
bool user_mapped,
int rw_flag,
u64 buffer_offset,
@@ -59,4 +71,24 @@ void nvgpu_vm_unmap(struct vm_gk20a *vm, u64 offset);
int nvgpu_vm_find_buffer(struct vm_gk20a *vm, u64 gpu_va,
struct dma_buf **dmabuf,
u64 *offset);
enum nvgpu_aperture gk20a_dmabuf_aperture(struct gk20a *g,
struct dma_buf *dmabuf);
int validate_fixed_buffer(struct vm_gk20a *vm,
struct buffer_attrs *bfr,
u64 map_offset, u64 map_size,
struct vm_reserved_va_node **pva_node);
int setup_buffer_kind_and_compression(struct vm_gk20a *vm,
u32 flags,
struct buffer_attrs *bfr,
enum gmmu_pgsz_gk20a pgsz_idx);
int gk20a_alloc_comptags(struct gk20a *g,
struct device *dev,
struct dma_buf *dmabuf,
struct gk20a_comptag_allocator *allocator,
u32 lines, bool user_mappable,
u64 *ctag_map_win_size,
u32 *ctag_map_win_ctagline);
void gk20a_vm_unmap_locked_kref(struct kref *ref);
#endif