1 files changed, 19 insertions, 1 deletions

diff --git a/include/uapi/linux/nvgpu.h b/include/uapi/linux/nvgpu.h
index 6024edee..6a8e44c5 100644
--- a/include/uapi/linux/nvgpu.h
+++ b/include/uapi/linux/nvgpu.h
@@ -314,6 +314,22 @@ struct nvgpu_gpu_vsms_mapping {
         __u64 vsms_map_buf_addr;
 };
 
+struct nvgpu_gpu_get_buffer_info_args {
+        union {
+                struct {
+                        __u32 dmabuf_fd;   /* dma-buf fd */
+                } in;
+                struct {
+                        __u64 id;          /* Unique within live
+                                            * buffers */
+                        __u64 length;      /* Allocated length of the
+                                            * buffer */
+                        __u64 reserved0;
+                        __u64 reserved1;
+                } out;
+        };
+};
+
 #define NVGPU_GPU_IOCTL_ZCULL_GET_CTX_SIZE \
         _IOR(NVGPU_GPU_IOCTL_MAGIC, 1, struct nvgpu_gpu_zcull_get_ctx_size_args)
 #define NVGPU_GPU_IOCTL_ZCULL_GET_INFO \
@@ -352,9 +368,11 @@ struct nvgpu_gpu_vsms_mapping {
         _IOWR(NVGPU_GPU_IOCTL_MAGIC, 18, struct nvgpu_gpu_num_vsms)
 #define NVGPU_GPU_IOCTL_VSMS_MAPPING \
         _IOWR(NVGPU_GPU_IOCTL_MAGIC, 19, struct nvgpu_gpu_vsms_mapping)
+#define NVGPU_GPU_IOCTL_GET_BUFFER_INFO \
+        _IOWR(NVGPU_GPU_IOCTL_MAGIC, 20, struct nvgpu_gpu_get_buffer_info_args)
 
 #define NVGPU_GPU_IOCTL_LAST            \
-        _IOC_NR(NVGPU_GPU_IOCTL_VSMS_MAPPING)
+        _IOC_NR(NVGPU_GPU_IOCTL_GET_BUFFER_INFO)
 #define NVGPU_GPU_IOCTL_MAX_ARG_SIZE    \
         sizeof(struct nvgpu_gpu_prepare_compressible_read_args)