Translation.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 TRANSLATION_H
#define TRANSLATION_H

#include "pedigree/kernel/processor/types.h"

#define NUM_TRANSLATIONS 256

class Translations
{
  public:
    struct Translation
    {
        uint32_t virt;
        uint32_t size;
        uint32_t phys;
        uint32_t mode;
    };

    Translations();
    ~Translations();

    Translation getTranslation(size_t n);

    size_t getNumTranslations();

    void
    addTranslation(uint32_t virt, uint32_t phys, uint32_t size, uint32_t mode);

    uint32_t findFreePhysicalMemory(uint32_t size, uint32_t align = 0x100000);

    void removeRange(uintptr_t start, uintptr_t end);

  private:
    Translation m_pTranslations[NUM_TRANSLATIONS];

    size_t m_nTranslations;
};
#endif