ioapic.h

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/*
 *  Copyright (C) 2004,2005 Bregmasoft
 * 
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc., 59
 * Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
#ifndef ZYGOMA_IA32_IOAPIC_H_ 
#define ZYGOMA_IA32_IOAPIC_H_ 

#include <config.h>
#include <iosfwd>
#include <types.h>

namespace Zygoma
{
  namespace ia32
  {
    class IOApicRedirection
    {
    public:
      u08 m_vector;
      u08 m_deliverMode:3;
      u08 m_destinationMode:1;
      u08 m_deliveryStatus:1;
      u08 m_pinPolarity:1;
      u08 m_remoteIRR:1;
      u08 m_triggerMode:1;
      u08 m_interruptMask:1;
      u08 m_reserved17:7;
      u08 m_reserved24;
      u08 m_reserved32;
      u08 m_reserved40;
      u08 m_reserved48;
      u08 m_destination;
    } ZYGOMA_PACKED;


    class IOApic
    {
    public:
      IOApic();

      u32
      id() const;

      void
      setId(u32 id);

      u32
      maxRedirectionEntry() const;

      u32
      version() const;

      u32
      arbitrationId() const;

      IOApicRedirection
      redirection(int interrupt) const;

      void
      setRedirection(int interrupt, IOApicRedirection);

      std::ostream&
      printStream(std::ostream& ostr) const;

    private:
      mutable u32 volatile m_registerSelect; 
      u32 volatile m_unused[3];
      u32 volatile m_data;           
    } ZYGOMA_PACKED;

    inline std::ostream&
    operator<<(std::ostream& ostr, IOApic& ioapic)
    {
      return ioapic.printStream(ostr);
    }

  } // namespace ia32
} // namespace Zygoma

#endif // ZYGOMA_IA32_IOAPIC_H_ 

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