libgralloc/ionalloc.h

/*
 * Copyright (c) 2011-2012, Code Aurora Forum. All rights reserved.

 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
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 *   * Redistributions in binary form must reproduce the above
 *     copyright notice, this list of conditions and the following
 *     disclaimer in the documentation and/or other materials provided
 *     with the distribution.
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 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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 */

#ifndef GRALLOC_IONALLOC_H
#define GRALLOC_IONALLOC_H

#include "memalloc.h"
#include "gr.h"
//#include <linux/ion.h>
//XXX: Move to bionic
#include "ion_msm.h"

namespace gralloc {

class IonAlloc : public IMemAlloc  {

    public:
    virtual int alloc_buffer(alloc_data& data);

    virtual int free_buffer(void *base, size_t size,
                            int offset, int fd);

    virtual int map_buffer(void **pBase, size_t size,
                           int offset, int fd);

    virtual int unmap_buffer(void *base, size_t size,
                             int offset);

    virtual int clean_buffer(void*base, size_t size,
                             int offset, int fd);

    IonAlloc() { mIonFd = FD_INIT; }

    ~IonAlloc() { close_device(); }

    private:
    int mIonFd;

    int open_device();

    void close_device();

    mutable Locker mLock;

};

}

#endif /* GRALLOC_IONALLOC_H */