Messages in this thread Patch in this message | | | From | Loic Pallardy <> | Subject | [PATCH v3 3/6] include: virtio_rpmsg: add virtio rpmsg configuration structure | Date | Wed, 1 Feb 2017 16:07:09 +0100 |
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Rpmsg channel configuration should be identical on host and coprocessor side. This patch proposes a new structure named struct virtio_rpmsg_cfg to gather all configuration information to characterize the communication link and. This structure will be exchanged with coprocessor via the resource table, expanding struct fw_rsc_vdev. It will guarantee that host and coprocessor will share the same information. virtio_rpmsg will access it thanks to virtio get and set features. Presence of struct virtio_rpmsg_cfg is optional.
Signed-off-by: Loic Pallardy <loic.pallardy@st.com> --- No change since V1 --- include/linux/rpmsg/virtio_rpmsg.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 include/linux/rpmsg/virtio_rpmsg.h
diff --git a/include/linux/rpmsg/virtio_rpmsg.h b/include/linux/rpmsg/virtio_rpmsg.h new file mode 100644 index 0000000..5f3f0d0 --- /dev/null +++ b/include/linux/rpmsg/virtio_rpmsg.h @@ -0,0 +1,32 @@ + +#ifndef _LINUX_VIRTIO_RPMSG_H +#define _LINUX_VIRTIO_RPMSG_H + +/* Offset in struct fw_rsc_vdev */ +#define RPMSG_CONFIG_OFFSET 0 + +/** + * struct virtio_rpmsg_cfg - optional configuration field for virtio rpmsg + * provided at probe time by virtio (get/set) + * @id: virtio cfg id (as in virtio_ids.h) + * @version: virtio_rpmsg_cfg structure version number + * @va: virtual address (used when buffer allocated by low level driver) + * @da: device address + * @pa: physical address + * @len: length (in bytes) + * @buf_size: size of rpmsg buffer size (defined by firmware else default value + * used) + * @reserved: reserved (must be zero) + */ +struct virtio_rpmsg_cfg { + u32 id; + u32 version; + u64 va; + u32 da; + u32 pa; + u32 len; + u32 buf_size; + u32 reserved; +} __packed; + +#endif -- 1.9.1
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