58 lines
1.4 KiB
C++
58 lines
1.4 KiB
C++
/*
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* \brief IRQ session interface
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* \author Christian Helmuth
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* \date 2007-09-13
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*
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* An open IRQ session represents a valid IRQ attachment/association.
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* Initially, the interrupt is masked and will only occur if enabled. This is
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* done by calling wait_for_irq(). When the interrupt is delivered to the
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* client, it was acknowledged and masked at the interrupt controller before.
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*
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* Disassociation from an IRQ is done by closing the session.
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*/
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/*
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* Copyright (C) 2007-2013 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 _INCLUDE__IRQ_SESSION__IRQ_SESSION_H_
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#define _INCLUDE__IRQ_SESSION__IRQ_SESSION_H_
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#include <base/capability.h>
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#include <session/session.h>
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namespace Genode { struct Irq_session; }
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struct Genode::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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static const char *service_name() { return "IRQ"; }
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virtual ~Irq_session() { }
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virtual void wait_for_irq() = 0;
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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_INTERFACE(Rpc_wait_for_irq);
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};
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#endif /* _INCLUDE__IRQ_SESSION__IRQ_SESSION_H_ */
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