From: Jeffrey Kardatzke <jkardatzke@xxxxxxxxxx>
Adds a V4L2 flag which indicates that a queue is using secure dmabufs
and the corresponding capability flag.
Signed-off-by: Jeffrey Kardatzke <jkardatzke@xxxxxxxxxx>
Signed-off-by: Yunfei Dong <yunfei.dong@xxxxxxxxxxxx>
---
include/media/videobuf2-core.h | 8 +++++++-
include/uapi/linux/videodev2.h | 2 ++
2 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index 4b6a9d2ea372..f6333d8fa617 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -518,6 +518,9 @@ struct vb2_buf_ops {
* ->finish().
* @non_coherent_mem: when set queue will attempt to allocate buffers using
* non-coherent memory.
+ * @allow_secure_mem: when set user-space can pass the %V4L2_MEMORY_FLAG_SECURE
+ * flag to indicate the dma bufs are secure.
+ * @secure_mem: when set queue will verify that the dma bufs are secure.
* @lock: pointer to a mutex that protects the &struct vb2_queue. The
* driver can set this to a mutex to let the v4l2 core serialize
* the queuing ioctls. If the driver wants to handle locking
@@ -598,6 +601,8 @@ struct vb2_queue {
unsigned int uses_requests:1;
unsigned int allow_cache_hints:1;
unsigned int non_coherent_mem:1;
+ unsigned int allow_secure_mem:1;
+ unsigned int secure_mem:1;
struct mutex *lock;
void *owner;
@@ -766,7 +771,8 @@ void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb);
* @q: pointer to &struct vb2_queue with videobuf2 queue.
* @memory: memory type, as defined by &enum vb2_memory.
* @flags: auxiliary queue/buffer management flags. Currently, the only
- * used flag is %V4L2_MEMORY_FLAG_NON_COHERENT.
+ * used flags are %V4L2_MEMORY_FLAG_NON_COHERENT and
+ * %V4L2_MEMORY_FLAG_SECURE.
* @count: requested buffer count.
*
* Videobuf2 core helper to implement VIDIOC_REQBUF() operation. It is called
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index c3d4e490ce7c..4bf8d392d5a5 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -1026,6 +1026,7 @@ struct v4l2_requestbuffers {
};
#define V4L2_MEMORY_FLAG_NON_COHERENT (1 << 0)
+#define V4L2_MEMORY_FLAG_SECURE (1 << 1)
/* capabilities for struct v4l2_requestbuffers and v4l2_create_buffers */
#define V4L2_BUF_CAP_SUPPORTS_MMAP (1 << 0)
@@ -1035,6 +1036,7 @@ struct v4l2_requestbuffers {
#define V4L2_BUF_CAP_SUPPORTS_ORPHANED_BUFS (1 << 4)
#define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
#define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
+#define V4L2_BUF_CAP_SUPPORTS_SECURE_MEM (1 << 7)
/**
* struct v4l2_plane - plane info for multi-planar buffers
--
2.18.0
