gpu: nvgpu: Reduce usage of nvgpu_vidmem_get_page_alloc

Reduce the usage of nvgpu_vidmem_get_page_alloc() and friends as much
as possible. This reduces the dependency of nvgpu on Linux SGLs. SGLs
still need to be used, however, since sharing buffers in userspace is
done by dma_buf FD. The best way to pass the vidmem buf through the
dma_buf is by SGL pointer.

JIRA NVGPU-30
JIRA NVGPU-138

Change-Id: Ide0e9e5a557f00aa63b063be085042101a5b34ee
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1540709
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 0 insertions, 13 deletions

diff --git a/drivers/gpu/nvgpu/include/nvgpu/vidmem.h b/drivers/gpu/nvgpu/include/nvgpu/vidmem.h
index b89c710d..9e9f8301 100644
--- a/drivers/gpu/nvgpu/include/nvgpu/vidmem.h
+++ b/drivers/gpu/nvgpu/include/nvgpu/vidmem.h
@@ -27,7 +27,6 @@
 #include <nvgpu/errno.h>
 #include <nvgpu/nvgpu_mem.h>
 
-struct scatterlist;
 struct work_struct;
 
 struct gk20a;
@@ -74,8 +73,6 @@ struct nvgpu_vidmem_buf *nvgpu_vidmem_user_alloc(struct gk20a *g, size_t bytes);
 
 void nvgpu_vidmem_buf_free(struct gk20a *g, struct nvgpu_vidmem_buf *buf);
 
-struct nvgpu_page_alloc *nvgpu_vidmem_get_page_alloc(struct scatterlist *sgl);
-void nvgpu_vidmem_set_page_alloc(struct scatterlist *sgl, u64 addr);
 bool nvgpu_addr_is_vidmem_page_alloc(u64 addr);
 int nvgpu_vidmem_get_space(struct gk20a *g, u64 *space);
 
@@ -93,16 +90,6 @@ int nvgpu_vidmem_clear(struct gk20a *g, struct nvgpu_mem *mem);
  * When VIDMEM support is not present this interface is used.
  */
 
-static inline struct nvgpu_page_alloc *
-nvgpu_vidmem_get_page_alloc(struct scatterlist *sgl)
-{
-        return NULL;
-}
-
-static inline void nvgpu_vidmem_set_page_alloc(struct scatterlist *sgl, u64 addr)
-{
-}
-
 static inline bool nvgpu_addr_is_vidmem_page_alloc(u64 addr)
 {
         return false;