gpu: nvgpu: Implement 64k large page support

Implement support for 64kB large page size. Add an API to create an
address space via IOCTL so that we can accept flags, and assign one
flag for enabling 64kB large page size.

Also adds APIs to set per-context large page size. This is possible
only on Maxwell, so return error if caller tries to set large page
size on Kepler.

Default large page size is still 128kB.

Change-Id: I20b51c8f6d4a984acae8411ace3de9000c78e82f
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index 8ebf6711..04a4cf66 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -141,6 +141,7 @@ struct gpu_ops {
                 void (*reset)(struct gk20a *g);
                 void (*init_uncompressed_kind_map)(struct gk20a *g);
                 void (*init_kind_attr)(struct gk20a *g);
+                void (*set_mmu_page_size)(struct gk20a *g);
         } fb;
         struct {
                 void (*slcg_bus_load_gating_prod)(struct gk20a *g, bool prod);
@@ -291,13 +292,16 @@ struct gpu_ops {
                                 bool va_allocated,
                                 int rw_flag);
                 void (*vm_remove)(struct vm_gk20a *vm);
-                int (*vm_alloc_share)(struct gk20a_as_share *as_share);
+                int (*vm_alloc_share)(struct gk20a_as_share *as_share,
+                                      u32 flags);
                 int (*vm_bind_channel)(struct gk20a_as_share *as_share,
                                 struct channel_gk20a *ch);
                 int (*fb_flush)(struct gk20a *g);
                 void (*l2_invalidate)(struct gk20a *g);
                 void (*l2_flush)(struct gk20a *g, bool invalidate);
                 void (*tlb_invalidate)(struct vm_gk20a *vm);
+                void (*set_big_page_size)(struct gk20a *g,
+                                         void *inst_ptr, int size);
         } mm;
         struct {
                 int (*prepare_ucode)(struct gk20a *g);