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b80146a6f7
* Unifies the declaration of callbacks which manage driver/client shared dataspaces * Move the Linux driver-specific callback implementation to the lx_emul library from the PC's USB host driver Fix genodelabs/genode#4439
98 lines
2.5 KiB
C
98 lines
2.5 KiB
C
/*
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* \brief C interface to Genode's base types
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* \author Norman Feske
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* \date 2021-07-06
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*/
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/*
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* Copyright (C) 2006-2017 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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#ifndef _INCLUDE__GENODE_C_API__BASE_H_
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#define _INCLUDE__GENODE_C_API__BASE_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**********************************************
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** Forward-declared types used in the C API **
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**********************************************/
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struct genode_env;
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struct genode_allocator;
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struct genode_signal_handler;
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struct genode_shared_dataspace;
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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/**********************************************************************
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** Mapping between C types and their corresponding Genode C++ types **
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**********************************************************************/
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#ifdef __cplusplus
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#include <base/env.h>
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#include <base/allocator.h>
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#include <base/attached_dataspace.h>
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struct genode_env : Genode::Env { };
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struct genode_allocator : Genode::Allocator { };
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struct genode_signal_handler : Genode::Signal_dispatcher_base { };
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static inline auto genode_env_ptr(Genode::Env &env)
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{
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return static_cast<genode_env *>(&env);
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}
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static inline auto genode_allocator_ptr(Genode::Allocator &alloc)
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{
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return static_cast<genode_allocator *>(&alloc);
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}
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static inline auto genode_signal_handler_ptr(Genode::Signal_dispatcher_base &sigh)
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{
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return static_cast<genode_signal_handler *>(&sigh);
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}
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static inline Genode::Signal_context_capability cap(genode_signal_handler *sigh_ptr)
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{
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Genode::Signal_dispatcher_base *dispatcher_ptr = sigh_ptr;
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return *static_cast<Genode::Signal_handler<Genode::Meta::Empty> *>(dispatcher_ptr);
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}
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/**
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* Returns local address of attached shared dataspace
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*/
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Genode::addr_t
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genode_shared_dataspace_local_address(struct genode_shared_dataspace * ds);
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/**
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* Returns capability of shared dataspace
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*/
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Genode::Dataspace_capability
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genode_shared_dataspace_capability(struct genode_shared_dataspace * ds);
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#endif
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/**
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* Callback definition to allocate and attach a dataspace to share
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*/
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typedef struct genode_shared_dataspace *
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(*genode_shared_dataspace_alloc_attach_t) (unsigned long size);
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/**
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* Callback definition to detach and free dataspace
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*/
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typedef void
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(*genode_shared_dataspace_free_t) (struct genode_shared_dataspace * ds);
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#endif /* _INCLUDE__GENODE_C_API__BASE_H_ */
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