diff options
Diffstat (limited to 'drivers/rpmsg')
| -rw-r--r-- | drivers/rpmsg/rpmsg_core.c | 160 | ||||
| -rw-r--r-- | drivers/rpmsg/virtio_rpmsg_bus.c | 13 |
2 files changed, 160 insertions, 13 deletions
diff --git a/drivers/rpmsg/rpmsg_core.c b/drivers/rpmsg/rpmsg_core.c index c511b5d64f89..3bee8e03a387 100644 --- a/drivers/rpmsg/rpmsg_core.c +++ b/drivers/rpmsg/rpmsg_core.c @@ -69,3 +69,163 @@ struct rpmsg_endpoint *rpmsg_create_ept(struct rpmsg_device *rpdev, return rpdev->ops->create_ept(rpdev, cb, priv, chinfo); } EXPORT_SYMBOL(rpmsg_create_ept); + +/** + * rpmsg_destroy_ept() - destroy an existing rpmsg endpoint + * @ept: endpoing to destroy + * + * Should be used by drivers to destroy an rpmsg endpoint previously + * created with rpmsg_create_ept(). + */ +void rpmsg_destroy_ept(struct rpmsg_endpoint *ept) +{ + ept->ops->destroy_ept(ept); +} +EXPORT_SYMBOL(rpmsg_destroy_ept); + +/** + * rpmsg_send() - send a message across to the remote processor + * @ept: the rpmsg endpoint + * @data: payload of message + * @len: length of payload + * + * This function sends @data of length @len on the @ept endpoint. + * The message will be sent to the remote processor which the @ept + * endpoint belongs to, using @ept's address and its associated rpmsg + * device destination addresses. + * In case there are no TX buffers available, the function will block until + * one becomes available, or a timeout of 15 seconds elapses. When the latter + * happens, -ERESTARTSYS is returned. + * + * Can only be called from process context (for now). + * + * Returns 0 on success and an appropriate error value on failure. + */ +int rpmsg_send(struct rpmsg_endpoint *ept, void *data, int len) +{ + return ept->ops->send(ept, data, len); +} +EXPORT_SYMBOL(rpmsg_send); + +/** + * rpmsg_sendto() - send a message across to the remote processor, specify dst + * @ept: the rpmsg endpoint + * @data: payload of message + * @len: length of payload + * @dst: destination address + * + * This function sends @data of length @len to the remote @dst address. + * The message will be sent to the remote processor which the @ept + * endpoint belongs to, using @ept's address as source. + * In case there are no TX buffers available, the function will block until + * one becomes available, or a timeout of 15 seconds elapses. When the latter + * happens, -ERESTARTSYS is returned. + * + * Can only be called from process context (for now). + * + * Returns 0 on success and an appropriate error value on failure. + */ +int rpmsg_sendto(struct rpmsg_endpoint *ept, void *data, int len, u32 dst) +{ + return ept->ops->sendto(ept, data, len, dst); +} +EXPORT_SYMBOL(rpmsg_sendto); + +/** + * rpmsg_send_offchannel() - send a message using explicit src/dst addresses + * @ept: the rpmsg endpoint + * @src: source address + * @dst: destination address + * @data: payload of message + * @len: length of payload + * + * This function sends @data of length @len to the remote @dst address, + * and uses @src as the source address. + * The message will be sent to the remote processor which the @ept + * endpoint belongs to. + * In case there are no TX buffers available, the function will block until + * one becomes available, or a timeout of 15 seconds elapses. When the latter + * happens, -ERESTARTSYS is returned. + * + * Can only be called from process context (for now). + * + * Returns 0 on success and an appropriate error value on failure. + */ +int rpmsg_send_offchannel(struct rpmsg_endpoint *ept, u32 src, u32 dst, + void *data, int len) +{ + return ept->ops->send_offchannel(ept, src, dst, data, len); +} +EXPORT_SYMBOL(rpmsg_send_offchannel); + +/** + * rpmsg_send() - send a message across to the remote processor + * @ept: the rpmsg endpoint + * @data: payload of message + * @len: length of payload + * + * This function sends @data of length @len on the @ept endpoint. + * The message will be sent to the remote processor which the @ept + * endpoint belongs to, using @ept's address as source and its associated + * rpdev's address as destination. + * In case there are no TX buffers available, the function will immediately + * return -ENOMEM without waiting until one becomes available. + * + * Can only be called from process context (for now). + * + * Returns 0 on success and an appropriate error value on failure. + */ +int rpmsg_trysend(struct rpmsg_endpoint *ept, void *data, int len) +{ + return ept->ops->trysend(ept, data, len); +} +EXPORT_SYMBOL(rpmsg_trysend); + +/** + * rpmsg_sendto() - send a message across to the remote processor, specify dst + * @ept: the rpmsg endpoint + * @data: payload of message + * @len: length of payload + * @dst: destination address + * + * This function sends @data of length @len to the remote @dst address. + * The message will be sent to the remote processor which the @ept + * endpoint belongs to, using @ept's address as source. + * In case there are no TX buffers available, the function will immediately + * return -ENOMEM without waiting until one becomes available. + * + * Can only be called from process context (for now). + * + * Returns 0 on success and an appropriate error value on failure. + */ +int rpmsg_trysendto(struct rpmsg_endpoint *ept, void *data, int len, u32 dst) +{ + return ept->ops->trysendto(ept, data, len, dst); +} +EXPORT_SYMBOL(rpmsg_trysendto); + +/** + * rpmsg_send_offchannel() - send a message using explicit src/dst addresses + * @ept: the rpmsg endpoint + * @src: source address + * @dst: destination address + * @data: payload of message + * @len: length of payload + * + * This function sends @data of length @len to the remote @dst address, + * and uses @src as the source address. + * The message will be sent to the remote processor which the @ept + * endpoint belongs to. + * In case there are no TX buffers available, the function will immediately + * return -ENOMEM without waiting until one becomes available. + * + * Can only be called from process context (for now). + * + * Returns 0 on success and an appropriate error value on failure. + */ +int rpmsg_trysend_offchannel(struct rpmsg_endpoint *ept, u32 src, u32 dst, + void *data, int len) +{ + return ept->ops->trysend_offchannel(ept, src, dst, data, len); +} +EXPORT_SYMBOL(rpmsg_trysend_offchannel); diff --git a/drivers/rpmsg/virtio_rpmsg_bus.c b/drivers/rpmsg/virtio_rpmsg_bus.c index e5f256791fd3..184663276e51 100644 --- a/drivers/rpmsg/virtio_rpmsg_bus.c +++ b/drivers/rpmsg/virtio_rpmsg_bus.c @@ -299,19 +299,6 @@ __rpmsg_destroy_ept(struct virtproc_info *vrp, struct rpmsg_endpoint *ept) kref_put(&ept->refcount, __ept_release); } -/** - * rpmsg_destroy_ept() - destroy an existing rpmsg endpoint - * @ept: endpoing to destroy - * - * Should be used by drivers to destroy an rpmsg endpoint previously - * created with rpmsg_create_ept(). - */ -void rpmsg_destroy_ept(struct rpmsg_endpoint *ept) -{ - ept->ops->destroy_ept(ept); -} -EXPORT_SYMBOL(rpmsg_destroy_ept); - static void virtio_rpmsg_destroy_ept(struct rpmsg_endpoint *ept) { __rpmsg_destroy_ept(ept->rpdev->vrp, ept); |