78 lines
1.9 KiB
C++
78 lines
1.9 KiB
C++
/*
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* \brief Core-specific instance of the IO_PORT session interface
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* \author Christian Helmuth
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* \date 2007-04-17
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*
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* We assume Core is running on IOPL3.
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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 _CORE__INCLUDE__IO_PORT_SESSION_COMPONENT_H_
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#define _CORE__INCLUDE__IO_PORT_SESSION_COMPONENT_H_
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/* Genode includes */
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#include <base/allocator.h>
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#include <base/rpc_server.h>
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#include <io_port_session/io_port_session.h>
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/* core includes */
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#include <dataspace_component.h>
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namespace Genode {
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class Io_port_session_component : public Rpc_object<Io_port_session>
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{
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private:
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Range_allocator *_io_port_alloc;
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unsigned short _base;
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unsigned short _size;
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/**
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* Check if access exceeds range
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*/
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bool _in_bounds(unsigned short address, unsigned width) {
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return (address >= _base) && (address + width <= _base + _size); }
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public:
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/**
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* Constructor
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*
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* \param io_port_alloc IO_PORT region allocator
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* \param args session construction arguments, in
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* particular port base and size
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* \throw Root::Invalid_args
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*/
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Io_port_session_component(Range_allocator *io_port_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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~Io_port_session_component();
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/*******************************
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** Io-port session interface **
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*******************************/
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unsigned char inb(unsigned short);
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unsigned short inw(unsigned short);
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unsigned inl(unsigned short);
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void outb(unsigned short, unsigned char);
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void outw(unsigned short, unsigned short);
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void outl(unsigned short, unsigned);
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};
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}
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#endif /* _CORE__INCLUDE__IO_PORT_SESSION_COMPONENT_H_ */
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