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J . Mercier" , =?utf-8?q?Christian_K=C3=B6nig?= , Matthias Brugger , , , , , , , Subject: [PATCH v3,01/21] v4l2: add secure memory flags Date: Wed, 6 Dec 2023 16:15:18 +0800 Message-ID: <20231206081538.17056-2-yunfei.dong@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231206081538.17056-1-yunfei.dong@mediatek.com> References: <20231206081538.17056-1-yunfei.dong@mediatek.com> MIME-Version: 1.0 X-TM-AS-Product-Ver: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-AS-Result: No-10--4.791700-8.000000 X-TMASE-MatchedRID: jAP7Z+txIHYXSulpnju2H4SvKOGqLLPKK2i9pofGVStcU0dNErOD+mlF 7OhYLlctcYKRVYWgduVAw/iJrysrSm+IsUfG75P2joyKzEmtrEeQoBr+SFneJJj9R7obtcgyH5L 2GhBQtff4ei4a6fEfjpynPbWEKM6u8xjBEybW2by3HA8h5a0MOXnL427v8Q461gisw2JKo8lYua /kyrSLKzqKm/4qdbn8gDLqnrRlXrZ8nn9tnqel2MprJP8FBOIa2ntLqnPa1U32O6TmKuehrIU0+ TfNuMYBg5SfNRWImmHKWqep8B//Hg6qbFFxcFTguN8K5GvhTbfHIhLbWKGpxiA2fMrPTSd/T07L PKPPWmXzYaPZALfIbSyZdUr8fx4fMbuyvvGhtIDNwMS8lpRKBQ== X-TM-AS-User-Approved-Sender: No X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--4.791700-8.000000 X-TMASE-Version: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-SNTS-SMTP: 97FF8B845C51ADA254BD35568E7F9B4AB38BDE9BF69A393FCA1FA0275D045FFC2000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231206_001635_949048_64F274FE X-CRM114-Status: GOOD ( 13.94 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Jeffrey Kardatzke Adds a V4L2 flag which indicates that a queue is using secure dmabufs and the corresponding capability flag. Signed-off-by: Jeffrey Kardatzke Signed-off-by: Yunfei Dong --- 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 5557d78b6f20..98eba43661c1 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 @@ -601,6 +604,8 @@ 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; @@ -770,7 +775,8 @@ void vb2_core_querybuf(struct vb2_queue *q, struct vb2_buffer *vb, 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 68e7ac178cc2..570b11552818 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) @@ -1036,6 +1037,7 @@ struct v4l2_requestbuffers { #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_MAX_NUM_BUFFERS (1 << 7) +#define V4L2_BUF_CAP_SUPPORTS_SECURE_MEM (1 << 8) /** * struct v4l2_plane - plane info for multi-planar buffers