IntelPIC.h

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/*
 * Copyright (C) 2015 Niek Linnenbank
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef __LIBARCH_INTEL_PIC_H
#define __LIBARCH_INTEL_PIC_H
 
#include <Types.h>
#include <BitOperations.h>
#include <IntController.h>
#include "IntelIO.h"
 
class IntelPIC : public IntController
{
  private:
 
    static const uint InterruptBase = 32;
 
    static const uint MasterBase = 0x20;
 
    static const uint SlaveBase  = 0xa0;
 
    enum Registers
    {
        Command = 0x0,
        Data    = 0x1
    };
 
    enum CommandFlags
    {
        Init1          = (1 << 4) | (1 << 0),
        CascadeMode    = (0),
        LevelTriggered = (0),
        Mode8086       = (1),
        EndOfInterrupt = (0x20)
    };
 
  public:
 
    IntelPIC();
 
    Result initialize();
 
    virtual Result enable(uint irq);
 
    virtual Result disable(uint irq);
 
    virtual Result clear(uint irq);
 
  private:
 
    IntelIO m_master;
 
    IntelIO m_slave;
};
 
#endif /* __LIBARCH_INTEL_PIC_H */