/*
 * page.h	
 * Copyright (c) Inst. of Machine Intelligence at Nankai University
 */

#ifndef _PAGE_H
#define _PAGE_H

#include "types.h"
#include "mmu.h"

#define	PAGE_NUM (MEMSIZE / PGSIZE)
/*
 * 頁結(jié)構(gòu)。如果需要擴展，請自行添加
 * 如果不喜歡鏈表管理，使用位圖也行。
*/
struct Page {
	int ref;
	int vitualpage;
	struct Page* next;
};

struct page_list {
	struct Page* head;
	struct Page* tail;
};


int page_init();
struct Page* page_alloc();
int page_insert(viraddr_t va, struct Page* pp);
int page_remove(viraddr_t va);
phyaddr_t page2pa(struct Page* pp);
struct Page* pa2page(phyaddr_t pa);
#endif