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/*
* Copyright (c) 2011 Richard Braun.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*
*
* Page allocator.
*/
#ifndef _PHYS_H
#define _PHYS_H
#include "list.h"
/*
* Physical address.
*/
typedef unsigned long phys_paddr_t;
/*
* Memory range size.
*/
typedef unsigned long phys_size_t;
/*
* Page descriptor.
*/
struct phys_page {
struct list node;
struct phys_seg *seg;
phys_paddr_t phys_addr;
unsigned int level;
};
void phys_setup(void);
struct phys_page * phys_alloc_pages(phys_size_t size);
void phys_free_pages(struct phys_page *page, phys_size_t size);
phys_paddr_t phys_alloc(phys_size_t size);
void phys_free(phys_paddr_t pa, phys_size_t size);
void phys_info(void);
#endif /* _PHYS_H */
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