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rpmsg: Make rpmsg_create_ept() take channel_info struct 

As we introduce support for additional rpmsg backends, some of these
only supports point-to-point "links" represented by a name. By making
rpmsg_create_ept() take a channel_info struct we allow for these
backends to either be passed a source address, a destination address or
a name identifier.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
hifive-unleashed-5.1
Bjorn Andersson 2016-09-01 15:27:56 -07:00
parent 2a48d7322d
commit 2b263d2408
2 changed files with 24 additions and 17 deletions
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26
drivers/rpmsg/virtio_rpmsg_bus.c
View File

@ -73,18 +73,6 @@ struct virtproc_info {
struct rpmsg_endpoint *ns_ept;
};
/**
* struct rpmsg_channel_info - internal channel info representation
* @name: name of service
* @src: local address
* @dst: destination address
*/
struct rpmsg_channel_info {
char name[RPMSG_NAME_SIZE];
u32 src;
u32 dst;
};
#define to_rpmsg_channel(d) container_of(d, struct rpmsg_channel, dev)
#define to_rpmsg_driver(d) container_of(d, struct rpmsg_driver, drv)
@ -259,7 +247,7 @@ free_ept:
* @rpdev: rpmsg channel device
* @cb: rx callback handler
* @priv: private data for the driver's use
* @addr: local rpmsg address to bind with @cb
* @chinfo: channel_info with the local rpmsg address to bind with @cb
*
* Every rpmsg address in the system is bound to an rx callback (so when
* inbound messages arrive, they are dispatched by the rpmsg bus using the
@ -295,9 +283,10 @@ free_ept:
* Returns a pointer to the endpoint on success, or NULL on error.
*/
struct rpmsg_endpoint *rpmsg_create_ept(struct rpmsg_channel *rpdev,
rpmsg_rx_cb_t cb, void *priv, u32 addr)
rpmsg_rx_cb_t cb, void *priv,
struct rpmsg_channel_info chinfo)
{
return __rpmsg_create_ept(rpdev->vrp, rpdev, cb, priv, addr);
return __rpmsg_create_ept(rpdev->vrp, rpdev, cb, priv, chinfo.src);
}
EXPORT_SYMBOL(rpmsg_create_ept);
@ -353,10 +342,15 @@ static int rpmsg_dev_probe(struct device *dev)
struct rpmsg_channel *rpdev = to_rpmsg_channel(dev);
struct rpmsg_driver *rpdrv = to_rpmsg_driver(rpdev->dev.driver);
struct virtproc_info *vrp = rpdev->vrp;
struct rpmsg_channel_info chinfo = {};
struct rpmsg_endpoint *ept;
int err;
ept = rpmsg_create_ept(rpdev, rpdrv->callback, NULL, rpdev->src);
strncpy(chinfo.name, rpdev->id.name, RPMSG_NAME_SIZE);
chinfo.src = rpdev->src;
chinfo.dst = RPMSG_ADDR_ANY;
ept = rpmsg_create_ept(rpdev, rpdrv->callback, NULL, chinfo);
if (!ept) {
dev_err(dev, "failed to create endpoint\n");
err = -ENOMEM;

15
include/linux/rpmsg.h
View File

@ -97,6 +97,18 @@ enum rpmsg_ns_flags {
struct virtproc_info;
/**
* struct rpmsg_channel_info - channel info representation
* @name: name of service
* @src: local address
* @dst: destination address
*/
struct rpmsg_channel_info {
char name[RPMSG_NAME_SIZE];
u32 src;
u32 dst;
};
/**
* rpmsg_channel - devices that belong to the rpmsg bus are called channels
* @vrp: the remote processor this channel belongs to
@ -171,7 +183,8 @@ int __register_rpmsg_driver(struct rpmsg_driver *drv, struct module *owner);
void unregister_rpmsg_driver(struct rpmsg_driver *drv);
void rpmsg_destroy_ept(struct rpmsg_endpoint *);
struct rpmsg_endpoint *rpmsg_create_ept(struct rpmsg_channel *,
rpmsg_rx_cb_t cb, void *priv, u32 addr);
rpmsg_rx_cb_t cb, void *priv,
struct rpmsg_channel_info chinfo);
int
rpmsg_send_offchannel_raw(struct rpmsg_channel *, u32, u32, void *, int, bool);