gpu: nvgpu: support gk20a virtualization

The nvgpu driver now supports using the Tegra graphics virtualization
interfaces to support gk20a in a virtualized environment.

Bug 1509608

Change-Id: I6ede15ee7bf0b0ad8a13e8eb5f557c3516ead676
Signed-off-by: Aingara Paramakuru <aparamakuru@nvidia.com>
Reviewed-on: http://git-master/r/440122
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 35 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/mm_gk20a.h b/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
index b8726c62..f06c465a 100644
--- a/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
@@ -318,6 +318,10 @@ struct vm_gk20a {
         dma_addr_t zero_page_iova;
         void *zero_page_cpuva;
         struct sg_table *zero_page_sgt;
+
+#ifdef CONFIG_TEGRA_GR_VIRTUALIZATION
+        u64 handle;
+#endif
 };
 
 struct gk20a;
@@ -438,11 +442,30 @@ u64 gk20a_gmmu_map(struct vm_gk20a *vm,
                 u32 flags,
                 int rw_flag);
 
+u64 gk20a_locked_gmmu_map(struct vm_gk20a *vm,
+                        u64 map_offset,
+                        struct sg_table *sgt,
+                        u64 buffer_offset,
+                        u64 size,
+                        int pgsz_idx,
+                        u8 kind_v,
+                        u32 ctag_offset,
+                        u32 flags,
+                        int rw_flag,
+                        bool clear_ctags);
+
 void gk20a_gmmu_unmap(struct vm_gk20a *vm,
                 u64 vaddr,
                 u64 size,
                 int rw_flag);
 
+void gk20a_locked_gmmu_unmap(struct vm_gk20a *vm,
+                        u64 vaddr,
+                        u64 size,
+                        int pgsz_idx,
+                        bool va_allocated,
+                        int rw_flag);
+
 struct sg_table *gk20a_mm_pin(struct device *dev, struct dma_buf *dmabuf);
 void gk20a_mm_unpin(struct device *dev, struct dma_buf *dmabuf,
                     struct sg_table *sgt);
@@ -461,6 +484,8 @@ u64 gk20a_vm_map(struct vm_gk20a *vm,
 /* unmap handle from kernel */
 void gk20a_vm_unmap(struct vm_gk20a *vm, u64 offset);
 
+void gk20a_vm_unmap_locked(struct mapped_buffer_node *mapped_buffer);
+
 /* get reference to all currently mapped buffers */
 int gk20a_vm_get_buffers(struct vm_gk20a *vm,
                          struct mapped_buffer_node ***mapped_buffers,
@@ -482,6 +507,16 @@ int gk20a_vm_find_buffer(struct vm_gk20a *vm, u64 gpu_va,
 void gk20a_vm_get(struct vm_gk20a *vm);
 void gk20a_vm_put(struct vm_gk20a *vm);
 
+void gk20a_vm_remove_support(struct vm_gk20a *vm);
+
+u64 gk20a_vm_alloc_va(struct vm_gk20a *vm,
+                     u64 size,
+                     enum gmmu_pgsz_gk20a gmmu_pgsz_idx);
+
+int gk20a_vm_free_va(struct vm_gk20a *vm,
+                     u64 offset, u64 size,
+                     enum gmmu_pgsz_gk20a pgsz_idx);
+
 /* vm-as interface */
 struct nvhost_as_alloc_space_args;
 struct nvhost_as_free_space_args;