gpu: nvgpu: Remove gk20a sparse texture & PTE freeing

Remove support for gk20a sparse textures. We're using implementation
from user space, so gk20a code is never invoked.

Also removes ref_cnt for PTEs, so we never free PTEs when unmapping
pages, but only at VM delete time.

Change-Id: I04d7d43d9bff23ee46fd0570ad189faece35dd14
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/663294

1 files changed, 0 insertions, 4 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index 4333cd20..4ddea431 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -292,10 +292,6 @@ struct gpu_ops {
         struct {
                 int (*set_sparse)(struct vm_gk20a *vm, u64 vaddr,
                                u32 num_pages, u32 pgsz_idx, bool refplus);
-                int (*put_empty)(struct vm_gk20a *vm, u64 vaddr,
-                               u32 num_pages, u32 pgsz_idx);
-                void (*clear_sparse)(struct vm_gk20a *vm, u64 vaddr,
-                               u64 size, u32 pgsz_idx);
                 bool (*is_debug_mode_enabled)(struct gk20a *g);
                 u64 (*gmmu_map)(struct vm_gk20a *vm,
                                 u64 map_offset,