86 lines
1.9 KiB
C
86 lines
1.9 KiB
C
/*
|
|
* 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_NIOS2_PGALLOC_H
|
|
#define _ASM_NIOS2_PGALLOC_H
|
|
|
|
#include <linux/mm.h>
|
|
|
|
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);
|
|
|
|
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);
|
|
}
|
|
|
|
static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
|
|
unsigned long address)
|
|
{
|
|
pte_t *pte;
|
|
|
|
pte = (pte_t *) __get_free_pages(GFP_KERNEL|__GFP_ZERO, PTE_ORDER);
|
|
|
|
return pte;
|
|
}
|
|
|
|
static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
|
|
unsigned long address)
|
|
{
|
|
struct page *pte;
|
|
|
|
pte = alloc_pages(GFP_KERNEL, PTE_ORDER);
|
|
if (pte) {
|
|
if (!pgtable_page_ctor(pte)) {
|
|
__free_page(pte);
|
|
return NULL;
|
|
}
|
|
clear_highpage(pte);
|
|
}
|
|
return pte;
|
|
}
|
|
|
|
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
|
|
{
|
|
free_pages((unsigned long)pte, PTE_ORDER);
|
|
}
|
|
|
|
static inline void pte_free(struct mm_struct *mm, struct page *pte)
|
|
{
|
|
pgtable_page_dtor(pte);
|
|
__free_pages(pte, PTE_ORDER);
|
|
}
|
|
|
|
#define __pte_free_tlb(tlb, pte, addr) \
|
|
do { \
|
|
pgtable_page_dtor(pte); \
|
|
tlb_remove_page((tlb), (pte)); \
|
|
} while (0)
|
|
|
|
#define check_pgt_cache() do { } while (0)
|
|
|
|
#endif /* _ASM_NIOS2_PGALLOC_H */
|