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/*
* Copyright (c) 2020-2021, Arm Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef SERVICE_PROVIDER_H
#define SERVICE_PROVIDER_H
#include <rpc/common/endpoint/rpc_interface.h>
#include <stddef.h>
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
/** \brief Service handler
*
* Defines a mapping between an opcode and a handler function. A complete
* service interface is defined by an array of service request handlers.
*/
struct service_handler {
uint32_t opcode;
rpc_status_t (*invoke)(void *context, struct call_req* req);
};
static inline int service_handler_invoke(const struct service_handler *handler,
void *context, struct call_req* req)
{
return handler->invoke(context, req);
}
static inline uint32_t service_handler_get_opcode(const struct service_handler *handler)
{
return handler->opcode;
}
/** \brief Service provider
*
* A generalised service provider that acts as an rpc call endpoint. It receives call
* requests and delegates them to the approprate handle provided by a concrete service
* provider. To support service specialization and proxying, unhandled requests may
* optionally be passed to a delegate rpc_interface to form a chain of responsibility.
*/
struct service_provider {
struct rpc_interface iface;
const struct service_handler *handlers;
size_t num_handlers;
struct rpc_interface *successor;
};
static inline struct rpc_interface *service_provider_get_rpc_interface(struct service_provider *sp)
{
return &sp->iface;
}
void service_provider_init(struct service_provider *sp, void *context,
const struct service_handler *handlers,
size_t num_handlers);
static inline void service_provider_link_successor(struct service_provider *sp,
struct rpc_interface *successor)
{
sp->successor = successor;
}
#ifdef __cplusplus
}
#endif
#endif /* SERVICE_PROVIDER_H */
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