gpu: nvgpu: make default vidmem page size of 64k

Allocate 64k pages for vidmem by default
Also make sure that base address of vidmem is aligned
to page size

Jira DNVGPU-20

Change-Id: Ie2e5111f942467754db5b45f1518d72c925d3d19
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1206405
(cherry picked from commit 542ebf7f571ba6dc631466e562f7d8e05df4a9a6)
Reviewed-on: http://git-master/r/1210958
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/mm_gk20a.c b/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
index 553b3ac5..81fa38bb 100644
--- a/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
@@ -862,6 +862,7 @@ static int gk20a_init_vidmem(struct mm_gk20a *mm)
         size_t size = g->ops.mm.get_vidmem_size ?
                 g->ops.mm.get_vidmem_size(g) : 0;
         u64 bootstrap_base, bootstrap_size, base;
+        u64 default_page_size = SZ_64K;
         int err;
 
         if (!size)
@@ -869,7 +870,7 @@ static int gk20a_init_vidmem(struct mm_gk20a *mm)
 
         bootstrap_base = NVGPU_VIDMEM_BOOTSTRAP_ALLOCATOR_BASE;
         bootstrap_size = SZ_16M;
-        base = SZ_4K;
+        base = default_page_size;
 
         /*
          * Bootstrap allocator for use before the CE is initialized (CE
@@ -882,7 +883,7 @@ static int gk20a_init_vidmem(struct mm_gk20a *mm)
                                         SZ_4K, 0);
 
         err = gk20a_page_allocator_init(&g->mm.vidmem.allocator, "vidmem",
-                                        base, size - base, SZ_4K, 0);
+                                base, size - base, default_page_size, 0);
         if (err) {
                 gk20a_err(d, "Failed to register vidmem for size %zu: %d",
                                 size, err);