gpu: nvgpu: gp10b: Use phys addresses in PDEs

Use physical addresses in PDEs. All page table levels fit in 4k, so no
need for SMMU mapping.

Change-Id: Id9e418f35a79343f4a332a230e04abda5e0dd5d2
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/783748
GVS: Gerrit_Virtual_Submit
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: Seshendra Gadagottu <sgadagottu@nvidia.com>

1 files changed, 4 insertions, 7 deletions

diff --git a/drivers/gpu/nvgpu/gp10b/mm_gp10b.c b/drivers/gpu/nvgpu/gp10b/mm_gp10b.c
index 190dc7f6..65449534 100644
--- a/drivers/gpu/nvgpu/gp10b/mm_gp10b.c
+++ b/drivers/gpu/nvgpu/gp10b/mm_gp10b.c
@@ -160,13 +160,11 @@ static int update_gmmu_pde3_locked(struct vm_gk20a *vm,
         struct gk20a_mm_entry *pte = parent->entries + i;
         u32 pde_v[2] = {0, 0};
         u32 *pde;
-        struct gk20a *g = vm->mm->g;
 
         gk20a_dbg_fn("");
 
-        pte_addr = g->ops.mm.get_iova_addr(g, pte->sgt->sgl, 0)
-                   >> gmmu_new_pde_address_shift_v();
-        pde_addr = g->ops.mm.get_iova_addr(g, parent->sgt->sgl, 0);
+        pte_addr = sg_phys(pte->sgt->sgl) >> gmmu_new_pde_address_shift_v();
+        pde_addr = sg_phys(parent->sgt->sgl);
 
         pde_v[0] |= gmmu_new_pde_aperture_video_memory_f();
         pde_v[0] |= gmmu_new_pde_address_sys_f(u64_lo32(pte_addr));
@@ -203,7 +201,6 @@ static int update_gmmu_pde0_locked(struct vm_gk20a *vm,
         struct gk20a_mm_entry *entry = pte->entries + i;
         u32 pde_v[4] = {0, 0, 0, 0};
         u32 *pde;
-        struct gk20a *g = vm->mm->g;
 
         gk20a_dbg_fn("");
 
@@ -211,11 +208,11 @@ static int update_gmmu_pde0_locked(struct vm_gk20a *vm,
         big_valid = entry->size && entry->pgsz == gmmu_page_size_big;
 
         if (small_valid)
-                pte_addr_small = g->ops.mm.get_iova_addr(g, entry->sgt->sgl, 0)
+                pte_addr_small = sg_phys(entry->sgt->sgl)
                                  >> gmmu_new_dual_pde_address_shift_v();
 
         if (big_valid)
-                pte_addr_big = g->ops.mm.get_iova_addr(g, entry->sgt->sgl, 0)
+                pte_addr_big = sg_phys(entry->sgt->sgl)
                                >> gmmu_new_dual_pde_address_big_shift_v();
 
         if (small_valid) {