gpu: nvgpu: Per-SoC compressible page size

Define smallest compressible page size per SoC, and use that for
determining if a compressible kind should be downgraded to
uncompressed.

Bug 1605769

Change-Id: I7c9991ba0ae82fe533641f045e506c0b01a10d8b
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/724492

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gm20b/fb_gm20b.c b/drivers/gpu/nvgpu/gm20b/fb_gm20b.c
index 666d27e9..746ed42f 100644
--- a/drivers/gpu/nvgpu/gm20b/fb_gm20b.c
+++ b/drivers/gpu/nvgpu/gm20b/fb_gm20b.c
@@ -95,6 +95,11 @@ static int gm20b_fb_compression_page_size(struct gk20a *g)
         return SZ_128K;
 }
 
+static int gm20b_fb_compressible_page_size(struct gk20a *g)
+{
+        return SZ_64K;
+}
+
 static void gm20b_fb_dump_vpr_wpr_info(struct gk20a *g)
 {
         u32 val;
@@ -129,6 +134,7 @@ void gm20b_init_fb(struct gpu_ops *gops)
         gops->fb.init_fs_state = fb_gm20b_init_fs_state;
         gops->fb.set_mmu_page_size = gm20b_fb_set_mmu_page_size;
         gops->fb.compression_page_size = gm20b_fb_compression_page_size;
+        gops->fb.compressible_page_size = gm20b_fb_compressible_page_size;
         gops->fb.dump_vpr_wpr_info = gm20b_fb_dump_vpr_wpr_info;
         gm20b_init_uncompressed_kind_map();
         gm20b_init_kind_attr();