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, 6 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gm20b/mm_gm20b.c b/drivers/gpu/nvgpu/gm20b/mm_gm20b.c
index 0595fe2e..bdb3b827 100644
--- a/drivers/gpu/nvgpu/gm20b/mm_gm20b.c
+++ b/drivers/gpu/nvgpu/gm20b/mm_gm20b.c
@@ -45,6 +45,11 @@ static u32 gm20b_mm_get_big_page_sizes(void)
         return SZ_64K | SZ_128K;
 }
 
+static u32 gm20b_mm_get_default_big_page_size(void)
+{
+        return SZ_128K;
+}
+
 static bool gm20b_mm_support_sparse(struct gk20a *g)
 {
         return true;
@@ -67,6 +72,7 @@ void gm20b_init_mm(struct gpu_ops *gops)
         gops->mm.cbc_clean = gk20a_mm_cbc_clean;
         gops->mm.set_big_page_size = gm20b_mm_set_big_page_size;
         gops->mm.get_big_page_sizes = gm20b_mm_get_big_page_sizes;
+        gops->mm.get_default_big_page_size = gm20b_mm_get_default_big_page_size;
         gops->mm.get_iova_addr = gk20a_mm_iova_addr;
         gops->mm.get_physical_addr_bits = gk20a_mm_get_physical_addr_bits;
         gops->mm.get_mmu_levels = gk20a_mm_get_mmu_levels;