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83 lines
1.6 KiB
C++
83 lines
1.6 KiB
C++
/*
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* \brief IRQ session interface
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* \author Martin Stein
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* \date 2013-10-24
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*/
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/*
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* Copyright (C) 2013 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 General Public License version 2.
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*/
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#ifndef _IRQ_SESSION__IRQ_SESSION_H_
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#define _IRQ_SESSION__IRQ_SESSION_H_
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/* Genode includes */
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#include <base/capability.h>
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#include <session/session.h>
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namespace Genode
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{
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/**
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* Information that enables a user to await and ack an IRQ directly
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*/
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struct Irq_signal
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{
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unsigned receiver_id;
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unsigned context_id;
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};
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/**
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* IRQ session interface
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*/
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struct Irq_session : Session
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{
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/**
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* Interrupt trigger
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*/
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enum Trigger { TRIGGER_UNCHANGED = 0, TRIGGER_LEVEL, TRIGGER_EDGE };
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/**
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* Interrupt trigger polarity
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*/
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enum Polarity { POLARITY_UNCHANGED = 0, POLARITY_HIGH, POLARITY_LOW };
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/**
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* Destructor
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*/
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virtual ~Irq_session() { }
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/**
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* Await the next occurence of the interrupt of this session
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*/
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virtual void wait_for_irq() = 0;
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/**
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* Get information for direct interrupt handling
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*
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* FIXME: This is used only client-internal and could thus be protected.
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*/
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virtual Irq_signal signal() = 0;
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/*************
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** Session **
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*************/
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static const char * service_name() { return "IRQ"; }
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/*********************
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** RPC declaration **
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*********************/
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GENODE_RPC(Rpc_wait_for_irq, void, wait_for_irq);
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GENODE_RPC(Rpc_signal, Irq_signal, signal);
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GENODE_RPC_INTERFACE(Rpc_wait_for_irq, Rpc_signal);
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};
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}
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#endif /* _IRQ_SESSION__IRQ_SESSION_H_ */
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