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/*-

 * Copyright (c) 2009, Kohsuke Ohtani

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. 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.

 * 3. Neither the name of the author nor the names of any co-contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 */

#ifndef _PPC_MMU_H

#define _PPC_MMU_H

#include <sys/types.h>

typedef uint32_t        *pgd_t;                /* page directory */

struct pte {

        uint32_t        pte_hi;

        uint32_t        pte_lo;

};

typedef struct pte        *pte_t;                /* page table entry */

/*

 * Page table entry

 */

/* high word: */

#define PTE_VALID        0x00000001        /* valid */

#define        PTE_VSID        0x7fffff80        /* virtual segment */

#define        PTE_HID                0x00000040        /* hash */

#define        PTE_API                0x0000003f        /* abbreviated page index */

/* low word: */

#define        PTE_RPN                0xfffff000        /* real page number */

#define        PTE_REF                0x00000100        /* reference */

#define        PTE_CHG                0x00000080        /* change */

#define        PTE_WIMG        0x00000078        /* memory/cache control */

#define        PTE_PP                0x00000003        /* page protection */

/*

 *  Virtual and physical address translation

 */

#define PAGE_DIR(virt)

#define PAGE_TABLE(virt)

#define pte_present(pgd, virt)

#define page_present(pte, virt)

#define vtopte(pgd, virt)

#define ptetopg(pte, virt)

#endif /* !_PPC_MMU_H */