gpu: nvgpu: Update gk20a pde bit coverage function

The mm_gk20a.c function that returns number of bits that a PDE covers
is very useful for determing PDE size for all chips. Copy this into
the common VM code since this applies to all chips/platforms.

Bug 200105199

Change-Id: I437da4781be2fa7c540abe52b20f4c4321f6c649
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1639730
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
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>

2 files changed, 0 insertions, 6 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/mm_gk20a.c b/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
index 0b383a83..35c4d688 100644
--- a/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
@@ -116,11 +116,6 @@ int gk20a_init_mm_setup_hw(struct gk20a *g)
         return 0;
 }
 
-int gk20a_mm_pde_coverage_bit_count(struct vm_gk20a *vm)
-{
-        return vm->mmu_levels[0].lo_bit[0];
-}
-
 /* for gk20a the "video memory" apertures here are misnomers. */
 static inline u32 big_valid_pde0_bits(struct gk20a *g,
                                       struct nvgpu_gmmu_pd *pd, u64 addr)
diff --git a/drivers/gpu/nvgpu/gk20a/mm_gk20a.h b/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
index ee0c2a07..14629611 100644
--- a/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
@@ -172,7 +172,6 @@ int __gk20a_vm_bind_channel(struct vm_gk20a *vm, struct channel_gk20a *ch);
 void pde_range_from_vaddr_range(struct vm_gk20a *vm,
                                               u64 addr_lo, u64 addr_hi,
                                               u32 *pde_lo, u32 *pde_hi);
-int gk20a_mm_pde_coverage_bit_count(struct vm_gk20a *vm);
 u32 gk20a_mm_get_iommu_bit(struct gk20a *g);
 
 const struct gk20a_mmu_level *gk20a_mm_get_mmu_levels(struct gk20a *g,