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rpmsg: Introduce indirection table for rpmsg_device operations

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To allow for multiple backend implementations add an indireection table
for rpmsg_device related operations and move the virtio implementation
behind this table.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Bjorn Andersson
2016-09-01 15:27:58 -07:00
parent 92e1de51bf
commit 36b72c7dca
2 changed files with 65 additions and 6 deletions
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23
include/linux/rpmsg.h
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@@ -96,6 +96,8 @@ enum rpmsg_ns_flags {
#define RPMSG_ADDR_ANY 0xFFFFFFFF
struct virtproc_info;
struct rpmsg_endpoint;
struct rpmsg_device_ops;
/**
* struct rpmsg_channel_info - channel info representation
@@ -127,10 +129,31 @@ struct rpmsg_device {
u32 dst;
struct rpmsg_endpoint *ept;
bool announce;
const struct rpmsg_device_ops *ops;
};
typedef void (*rpmsg_rx_cb_t)(struct rpmsg_device *, void *, int, void *, u32);
/**
* struct rpmsg_device_ops - indirection table for the rpmsg_device operations
* @create_ept: create backend-specific endpoint, requried
* @announce_create: announce presence of new channel, optional
* @announce_destroy: announce destruction of channel, optional
*
* Indirection table for the operations that a rpmsg backend should implement.
* @announce_create and @announce_destroy are optional as the backend might
* advertise new channels implicitly by creating the endpoints.
*/
struct rpmsg_device_ops {
struct rpmsg_endpoint *(*create_ept)(struct rpmsg_device *rpdev,
rpmsg_rx_cb_t cb, void *priv,
struct rpmsg_channel_info chinfo);
int (*announce_create)(struct rpmsg_device *ept);
int (*announce_destroy)(struct rpmsg_device *ept);
};
/**
* struct rpmsg_endpoint - binds a local rpmsg address to its user
* @rpdev: rpmsg channel device