video: tegra: nvmap: support creating NvMap handle from VA

Support creation of NvMap handle from VA.

Bug 1749713

Change-Id: I40d6aee04d343f2076f6231ba810cac77a7f9f46
Signed-off-by: Krishna Reddy <vdumpa@nvidia.com>
Reviewed-on: http://git-master/r/1118110
Reviewed-by: Sri Krishna Chowdary <schowdary@nvidia.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/include/linux/nvmap.h b/include/linux/nvmap.h
index 06c8c1709..90358a6ad 100644
--- a/include/linux/nvmap.h
+++ b/include/linux/nvmap.h
@@ -135,6 +135,13 @@ struct nvmap_create_handle {
         __u32 handle;           /* returns nvmap handle */
 };
 
+struct nvmap_create_handle_from_va {
+        __u64 va;               /* FromVA*/
+        __u32 size;             /* non-zero for partial memory VMA. zero for end of VMA */
+        __u32 flags;            /* wb/wc/uc/iwb, tag etc. */
+        __u32 handle;           /* returns nvmap handle */
+};
+
 struct nvmap_alloc_handle {
         __u32 handle;           /* nvmap handle */
         __u32 heap_mask;        /* heaps to allocate from */
@@ -344,6 +351,9 @@ struct nvmap_debugfs_handles_entry {
 #define NVMAP_IOC_GET_IVC_ID _IOWR(NVMAP_IOC_MAGIC, 20, struct nvmap_create_handle)
 #define NVMAP_IOC_GET_IVM_HEAPS _IOR(NVMAP_IOC_MAGIC, 21, unsigned int)
 
+/* Create a new memory handle from VA passed */
+#define NVMAP_IOC_FROM_VA _IOWR(NVMAP_IOC_MAGIC, 22, struct nvmap_create_handle_from_va)
+
 /* START of T124 IOCTLS */
 /* Actually allocates memory for the specified handle, with kind */
 #define NVMAP_IOC_ALLOC_KIND _IOW(NVMAP_IOC_MAGIC, 100, struct nvmap_alloc_kind_handle)