/*
* \brief Core-specific instance of the IO_PORT session interface
* \author Christian Helmuth
* \date 2007-04-17
*
* We assume Core is running on IOPL3.
*/
/*
* Copyright (C) 2007-2013 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU General Public License version 2.
*/
#ifndef _CORE__INCLUDE__IO_PORT_SESSION_COMPONENT_H_
#define _CORE__INCLUDE__IO_PORT_SESSION_COMPONENT_H_
/* Genode includes */
#include
#include
#include
/* core includes */
#include
namespace Genode {
class Io_port_session_component : public Rpc_object
{
private:
Range_allocator *_io_port_alloc;
unsigned short _base;
unsigned short _size;
/**
* Check if access exceeds range
*/
bool _in_bounds(unsigned short address, unsigned width) {
return (address >= _base) && (address + width <= _base + _size); }
public:
/**
* Constructor
*
* \param io_port_alloc IO_PORT region allocator
* \param args session construction arguments, in
* particular port base and size
* \throw Root::Invalid_args
*/
Io_port_session_component(Range_allocator *io_port_alloc,
const char *args);
/**
* Destructor
*/
~Io_port_session_component();
/*******************************
** Io-port session interface **
*******************************/
unsigned char inb(unsigned short);
unsigned short inw(unsigned short);
unsigned inl(unsigned short);
void outb(unsigned short, unsigned char);
void outw(unsigned short, unsigned short);
void outl(unsigned short, unsigned);
};
}
#endif /* _CORE__INCLUDE__IO_PORT_SESSION_COMPONENT_H_ */