gpu: nvgpu: Per chip default big page size

Make default big page size query a HAL op instead of per-platform
constant. This allows querying for default big page size without
accessing Linux specific gk20a_platform structure.

JIRA NVGPU-38

Change-Id: Ibfbd1319764fdae5fdb06700fb64d23f6f3dd01a
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master/r/1507928
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit

1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gp10b/mm_gp10b.c b/drivers/gpu/nvgpu/gp10b/mm_gp10b.c
index 3cd3eb50..d7391c6d 100644
--- a/drivers/gpu/nvgpu/gp10b/mm_gp10b.c
+++ b/drivers/gpu/nvgpu/gp10b/mm_gp10b.c
@@ -26,6 +26,11 @@
 #include <nvgpu/hw/gp10b/hw_bus_gp10b.h>
 #include <nvgpu/hw/gp10b/hw_gmmu_gp10b.h>
 
+static u32 gp10b_mm_get_default_big_page_size(void)
+{
+        return SZ_64K;
+}
+
 static u32 gp10b_mm_get_physical_addr_bits(struct gk20a *g)
 {
         return 36;
@@ -68,7 +73,7 @@ static int gb10b_init_bar2_vm(struct gk20a *g)
         int err;
         struct mm_gk20a *mm = &g->mm;
         struct nvgpu_mem *inst_block = &mm->bar2.inst_block;
-        u32 big_page_size = gk20a_get_platform(g->dev)->default_big_page_size;
+        u32 big_page_size = g->ops.mm.get_default_big_page_size();
 
         /* BAR2 aperture size is 32MB */
         mm->bar2.aperture_size = 32 << 20;
@@ -410,6 +415,7 @@ static void gp10b_remove_bar2_vm(struct gk20a *g)
 void gp10b_init_mm(struct gpu_ops *gops)
 {
         gm20b_init_mm(gops);
+        gops->mm.get_default_big_page_size = gp10b_mm_get_default_big_page_size;
         gops->mm.get_physical_addr_bits = gp10b_mm_get_physical_addr_bits;
         gops->mm.init_mm_setup_hw = gp10b_init_mm_setup_hw;
         gops->mm.init_bar2_vm = gb10b_init_bar2_vm;