/* SPDX-License-Identifier: GPL-2.0 */ /* * remote processor messaging bus internals * * Copyright (C) 2011 Texas Instruments, Inc. * Copyright (C) 2011 Google, Inc. * * Ohad Ben-Cohen <[email protected]> * Brian Swetland <[email protected]> */ #ifndef __RPMSG_INTERNAL_H__ #define __RPMSG_INTERNAL_H__ #include <linux/rpmsg.h> #include <linux/poll.h> #define to_rpmsg_device(d) … #define to_rpmsg_driver(d) … extern const struct class rpmsg_class; /** * struct rpmsg_device_ops - indirection table for the rpmsg_device operations * @create_channel: create backend-specific channel, optional * @release_channel: release backend-specific channel, optional * @create_ept: create backend-specific endpoint, required * @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_ops - indirection table for rpmsg_endpoint operations * @destroy_ept: see @rpmsg_destroy_ept(), required * @send: see @rpmsg_send(), required * @sendto: see @rpmsg_sendto(), optional * @send_offchannel: see @rpmsg_send_offchannel(), optional * @trysend: see @rpmsg_trysend(), required * @trysendto: see @rpmsg_trysendto(), optional * @trysend_offchannel: see @rpmsg_trysend_offchannel(), optional * @poll: see @rpmsg_poll(), optional * @set_flow_control: see @rpmsg_set_flow_control(), optional * @get_mtu: see @rpmsg_get_mtu(), optional * * Indirection table for the operations that a rpmsg backend should implement. * In addition to @destroy_ept, the backend must at least implement @send and * @trysend, while the variants sending data off-channel are optional. */ struct rpmsg_endpoint_ops { … }; struct device *rpmsg_find_device(struct device *parent, struct rpmsg_channel_info *chinfo); struct rpmsg_device *rpmsg_create_channel(struct rpmsg_device *rpdev, struct rpmsg_channel_info *chinfo); int rpmsg_release_channel(struct rpmsg_device *rpdev, struct rpmsg_channel_info *chinfo); /** * rpmsg_ctrldev_register_device() - register a char device for control based on rpdev * @rpdev: prepared rpdev to be used for creating endpoints * * This function wraps rpmsg_register_device() preparing the rpdev for use as * basis for the rpmsg chrdev. */ static inline int rpmsg_ctrldev_register_device(struct rpmsg_device *rpdev) { … } #endif
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