[linux-2.6-block.git] / arch / mips / include / asm / pgalloc.h

/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 1994 - 2001, 2003 by Ralf Baechle
 * Copyright (C) 1999, 2000, 2001 Silicon Graphics, Inc.
 */
#ifndef _ASM_PGALLOC_H
#define _ASM_PGALLOC_H

#include <linux/highmem.h>
#include <linux/mm.h>
#include <linux/sched.h>

#include <asm-generic/pgalloc.h>	/* for pte_{alloc,free}_one */

static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
	pte_t *pte)
{
	set_pmd(pmd, __pmd((unsigned long)pte));
}

static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
	pgtable_t pte)
{
	set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
}
#define pmd_pgtable(pmd) pmd_page(pmd)

/*
 * Initialize a new pmd table with invalid pointers.
 */
extern void pmd_init(unsigned long page, unsigned long pagetable);

#ifndef __PAGETABLE_PMD_FOLDED

static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
{
	set_pud(pud, __pud((unsigned long)pmd));
}
#endif

/*
 * Initialize a new pgd / pmd table with invalid pointers.
 */
extern void pgd_init(unsigned long page);
extern pgd_t *pgd_alloc(struct mm_struct *mm);

static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
	free_pages((unsigned long)pgd, PGD_ORDER);
}

#define __pte_free_tlb(tlb,pte,address)			\
do {							\
	pgtable_pte_page_dtor(pte);			\
	tlb_remove_page((tlb), pte);			\
} while (0)

#ifndef __PAGETABLE_PMD_FOLDED

static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
{
	pmd_t *pmd;

	pmd = (pmd_t *) __get_free_pages(GFP_KERNEL, PMD_ORDER);
	if (pmd)
		pmd_init((unsigned long)pmd, (unsigned long)invalid_pte_table);
	return pmd;
}

static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
{
	free_pages((unsigned long)pmd, PMD_ORDER);
}

#define __pmd_free_tlb(tlb, x, addr)	pmd_free((tlb)->mm, x)

#endif

#ifndef __PAGETABLE_PUD_FOLDED

static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address)
{
	pud_t *pud;

	pud = (pud_t *) __get_free_pages(GFP_KERNEL, PUD_ORDER);
	if (pud)
		pud_init((unsigned long)pud, (unsigned long)invalid_pmd_table);
	return pud;
}

static inline void pud_free(struct mm_struct *mm, pud_t *pud)
{
	free_pages((unsigned long)pud, PUD_ORDER);
}

static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud)
{
	set_pgd(pgd, __pgd((unsigned long)pud));
}

#define __pud_free_tlb(tlb, x, addr)	pud_free((tlb)->mm, x)

#endif /* __PAGETABLE_PUD_FOLDED */

extern void pagetable_init(void);

#endif /* _ASM_PGALLOC_H */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* This file is subject to the terms and conditions of the GNU General Public
	3	* License. See the file "COPYING" in the main directory of this archive
	4	* for more details.
	5	*
	6	* Copyright (C) 1994 - 2001, 2003 by Ralf Baechle
	7	* Copyright (C) 1999, 2000, 2001 Silicon Graphics, Inc.
	8	*/
	9	#ifndef _ASM_PGALLOC_H
	10	#define _ASM_PGALLOC_H
	11
1da177e4 LT	12	#include <linux/highmem.h>
1da177e4 LT	13	#include <linux/mm.h>
e8edc6e0	14	#include <linux/sched.h>
1da177e4	15
b7902ce1 MR	16	#include <asm-generic/pgalloc.h> /* for pte_{alloc,free}_one */
b7902ce1 MR	17
1da177e4 LT	18	static inline void pmd_populate_kernel(struct mm_struct mm, pmd_t pmd,
	19	pte_t *pte)
	20	{
	21	set_pmd(pmd, __pmd((unsigned long)pte));
	22	}
	23
	24	static inline void pmd_populate(struct mm_struct mm, pmd_t pmd,
2f569afd	25	pgtable_t pte)
1da177e4 LT	26	{
	27	set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
	28	}
2f569afd	29	#define pmd_pgtable(pmd) pmd_page(pmd)
1da177e4	30
c6e8b587 RB	31	/*
	32	* Initialize a new pmd table with invalid pointers.
	33	*/
	34	extern void pmd_init(unsigned long page, unsigned long pagetable);
	35
325f8a0a	36	#ifndef __PAGETABLE_PMD_FOLDED
c6e8b587 RB	37
	38	static inline void pud_populate(struct mm_struct mm, pud_t pud, pmd_t *pmd)
	39	{
	40	set_pud(pud, __pud((unsigned long)pmd));
	41	}
	42	#endif
	43
1da177e4 LT	44	/*
	45	* Initialize a new pgd / pmd table with invalid pointers.
	46	*/
	47	extern void pgd_init(unsigned long page);
814f91bf	48	extern pgd_t pgd_alloc(struct mm_struct mm);
1da177e4	49
5e541973	50	static inline void pgd_free(struct mm_struct mm, pgd_t pgd)
1da177e4 LT	51	{
	52	free_pages((unsigned long)pgd, PGD_ORDER);
	53	}
	54
9e1b32ca	55	#define __pte_free_tlb(tlb,pte,address) \
2f569afd	56	do { \
b4ed71f5	57	pgtable_pte_page_dtor(pte); \
2f569afd MS	58	tlb_remove_page((tlb), pte); \
2f569afd MS	59	} while (0)
1da177e4	60
325f8a0a	61	#ifndef __PAGETABLE_PMD_FOLDED
1da177e4	62
1da177e4 LT	63	static inline pmd_t pmd_alloc_one(struct mm_struct mm, unsigned long address)
	64	{
	65	pmd_t *pmd;
	66
65f84656	67	pmd = (pmd_t *) __get_free_pages(GFP_KERNEL, PMD_ORDER);
1da177e4 LT	68	if (pmd)
	69	pmd_init((unsigned long)pmd, (unsigned long)invalid_pte_table);
	70	return pmd;
	71	}
	72
5e541973	73	static inline void pmd_free(struct mm_struct mm, pmd_t pmd)
1da177e4 LT	74	{
	75	free_pages((unsigned long)pmd, PMD_ORDER);
	76	}
	77
9e1b32ca	78	#define __pmd_free_tlb(tlb, x, addr) pmd_free((tlb)->mm, x)
1da177e4 LT	79
	80	#endif
	81
3377e227 AB	82	#ifndef __PAGETABLE_PUD_FOLDED
	83
	84	static inline pud_t pud_alloc_one(struct mm_struct mm, unsigned long address)
	85	{
	86	pud_t *pud;
	87
473738eb	88	pud = (pud_t *) __get_free_pages(GFP_KERNEL, PUD_ORDER);
3377e227 AB	89	if (pud)
	90	pud_init((unsigned long)pud, (unsigned long)invalid_pmd_table);
	91	return pud;
	92	}
	93
	94	static inline void pud_free(struct mm_struct mm, pud_t pud)
	95	{
	96	free_pages((unsigned long)pud, PUD_ORDER);
	97	}
	98
	99	static inline void pgd_populate(struct mm_struct mm, pgd_t pgd, pud_t *pud)
	100	{
	101	set_pgd(pgd, __pgd((unsigned long)pud));
	102	}
	103
	104	#define __pud_free_tlb(tlb, x, addr) pud_free((tlb)->mm, x)
	105
	106	#endif /* __PAGETABLE_PUD_FOLDED */
	107
6a1e5529 AN	108	extern void pagetable_init(void);
6a1e5529 AN	109
1da177e4	110	#endif /* _ASM_PGALLOC_H */