IoPortManager.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_PROCESSOR_IOPORTMANAGER_H
#define KERNEL_PROCESSOR_IOPORTMANAGER_H

#include "pedigree/kernel/Spinlock.h"
#include "pedigree/kernel/compiler.h"
#include "pedigree/kernel/processor/types.h"
#include "pedigree/kernel/utilities/RangeList.h"
#include "pedigree/kernel/utilities/Vector.h"

class IoPort;

#if !defined(KERNEL_PROCESSOR_NO_PORT_IO)

class IoPortManager
{
    friend class Processor;

  public:
    inline static IoPortManager &instance()
    {
        return m_Instance;
    }

    struct IoPortInfo
    {
        inline IoPortInfo(io_port_t IoPort, size_t size, const char *Name)
            : ioPort(IoPort), sIoPort(size), name(Name)
        {
        }

        io_port_t ioPort;
        size_t sIoPort;
        const char *name;
    };

    bool allocate(IoPort *Port, io_port_t ioPort, size_t size);
    void free(IoPort *Port);

    void allocateIoPortList(Vector<IoPortInfo *> &IoPorts);
    void freeIoPortList(Vector<IoPortInfo *> &IoPorts);

    void initialise(io_port_t ioPortBase, size_t size) INITIALISATION_ONLY;

  private:
    IoPortManager() INITIALISATION_ONLY;
    virtual ~IoPortManager();
    IoPortManager(const IoPortManager &);
    IoPortManager &operator=(const IoPortManager &);

    Spinlock m_Lock;

    RangeList<uint32_t> m_FreeIoPorts;
    Vector<IoPort *> m_UsedIoPorts;

    static IoPortManager m_Instance;
};

#endif

#endif