Heathrow.h

/*
 * Copyright (c) 2008-2014, Pedigree Developers
 *
 * Please see the CONTRIB file in the root of the source tree for a full
 * list of contributors.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef KERNEL_MACHINE_PPC_COMMON_HEATHROW_H
#define KERNEL_MACHINE_PPC_COMMON_HEATHROW_H

#include "pedigree/kernel/machine/IrqManager.h"
#include "pedigree/kernel/processor/InterruptManager.h"
#include "pedigree/kernel/processor/MemoryMappedIo.h"

class Heathrow : public IrqManager, private InterruptHandler
{
  public:
    inline static Heathrow &instance()
    {
        return m_Instance;
    }

    //
    // IrqManager interface
    //
    virtual irq_id_t registerIsaIrqHandler(uint8_t irq, IrqHandler *handler);
    virtual irq_id_t registerPciIrqHandler(IrqHandler *handler);
    virtual void acknowledgeIrq(irq_id_t Id);
    virtual void unregisterHandler(irq_id_t Id, IrqHandler *handler);

    bool initialise() INITIALISATION_ONLY;

  private:
    Heathrow() INITIALISATION_ONLY;
    inline virtual ~Heathrow()
    {
    }
    Heathrow(const Heathrow &);
    Heathrow &operator=(const Heathrow &);

    void searchNode(class Device *pDev);

    //
    // InterruptHandler interface
    //
    virtual void interrupt(size_t interruptNumber, InterruptState &state);

    void eoi(uint8_t irq);
    void enable(uint8_t irq, bool enable);
    void enableAll(bool enable);

    IoBase *m_pPort;

    IrqHandler *m_Handler[64];

    size_t m_nIrqs;

    static Heathrow m_Instance;

    uint32_t m_LowMask;
    uint32_t m_HighMask;
};

#endif