/*
* Copyright (C) 2006 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - 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.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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.
*/
/*
* This is the generic page hash table interface.
*/
#ifndef __PAGE_HT_H__
#define __PAGE_HT_H__
#include <mm/page.h>
#include <typedefs.h>
#include <arch/types.h>
#include <adt/list.h>
#include <adt/hash_table.h>
#define PAGE_HT_KEYS 2
#define KEY_AS 0
#define KEY_PAGE 1
#define PAGE_HT_ENTRIES_BITS 13
#define PAGE_HT_ENTRIES (1<<PAGE_HT_ENTRIES_BITS)
struct pte {
link_t link; /**< Page hash table link. */
as_t *as; /**< Address space. */
__address page; /**< Virtual memory page. */
__address frame; /**< Physical memory frame. */
unsigned g : 1; /**< Global page. */
unsigned x : 1; /**< Execute. */
unsigned w : 1; /**< Writable. */
unsigned k : 1; /**< Kernel privileges required. */
unsigned c : 1; /**< Cacheable. */
unsigned a : 1; /**< Accessed. */
unsigned d : 1; /**< Dirty. */
unsigned p : 1; /**< Present. */
};
extern page_mapping_operations_t ht_mapping_operations;
extern spinlock_t page_ht_lock;
extern hash_table_t page_ht;
extern hash_table_operations_t ht_operations;
#endif