HI Loic,
As this introduce a new virtio config. How about to add a new header
file for virtio_rpmsg in the include/uapi/linux directory just like
other virtio device driver, such as virtio_blk?
Thanks,
Wendy
On Wed, Dec 7, 2016 at 12:35 PM, Loic Pallardy <loic.pallardy@xxxxxx> wrote:
> 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@xxxxxx>
> ---
> 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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