114 lines
2.3 KiB
C++
114 lines
2.3 KiB
C++
/*
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* \brief IRQ session interface for Fiasco.OC
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* \author Stefan Kalkowski
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* \date 2011-01-28
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*/
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/*
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* Copyright (C) 2011-2012 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 _CORE__INCLUDE__IRQ_SESSION_COMPONENT_H_
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#define _CORE__INCLUDE__IRQ_SESSION_COMPONENT_H_
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#include <base/lock.h>
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#include <base/semaphore.h>
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#include <base/rpc_server.h>
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#include <util/list.h>
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#include <irq_session/capability.h>
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namespace Genode {
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class Irq_session_component : public Rpc_object<Irq_session>,
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public List<Irq_session_component>::Element
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{
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private:
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class Interrupt : public Avl_node<Interrupt>
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{
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private:
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Native_thread _cap;
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Semaphore _sem;
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public:
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unsigned number;
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Interrupt();
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bool higher(Interrupt *n);
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Interrupt* find_by_num(unsigned num);
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Native_thread capability() { return _cap; }
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Semaphore* semaphore() { return &_sem; }
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};
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class Interrupt_handler : public Thread<4096>
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{
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private:
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Interrupt_handler() { start(); }
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void entry();
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public:
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static Native_thread handler_cap();
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};
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Interrupt _irq;
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Range_allocator *_irq_alloc;
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/*
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* Each IRQ session uses a dedicated server activation
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*/
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enum { STACK_SIZE = 2048 };
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Rpc_entrypoint _ep;
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Irq_session_capability _irq_cap;
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static Avl_tree<Interrupt>* _irqs();
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public:
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/**
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* Constructor
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*
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* \param cap_session capability session to use
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* \param irq_alloc platform-dependent IRQ allocator
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* \param args session construction arguments
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*/
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Irq_session_component(Cap_session *cap_session,
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Range_allocator *irq_alloc,
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const char *args);
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/**
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* Destructor
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*/
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~Irq_session_component();
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/**
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* Return capability to this session
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*
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* If an initialization error occurs, returned capability is invalid.
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*/
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Irq_session_capability cap() const { return _irq_cap; }
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/***************************
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** Irq session interface **
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***************************/
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void wait_for_irq();
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};
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}
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#endif /* _CORE__INCLUDE__IRQ_SESSION_COMPONENT_H_ */
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