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 10 #ifndef _ASM_NIOS2_PGALLOC_H 11 #define _ASM_NIOS2_PGALLOC_H 12 13 #include <linux/mm.h> 14 15 #include <asm-generic/pgalloc.h> /* for pte_{alloc,free}_one */ 16 17 static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, 18 pte_t *pte) 19 { 20 set_pmd(pmd, __pmd((unsigned long)pte)); 21 } 22 23 static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, 24 pgtable_t pte) 25 { 26 set_pmd(pmd, __pmd((unsigned long)page_address(pte))); 27 } 28 #define pmd_pgtable(pmd) pmd_page(pmd) 29 30 /* 31 * Initialize a new pmd table with invalid pointers. 32 */ 33 extern void pmd_init(unsigned long page, unsigned long pagetable); 34 35 extern pgd_t *pgd_alloc(struct mm_struct *mm); 36 37 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) 38 { 39 free_pages((unsigned long)pgd, PGD_ORDER); 40 } 41 42 #define __pte_free_tlb(tlb, pte, addr) \ 43 do { \ 44 pgtable_pte_page_dtor(pte); \ 45 tlb_remove_page((tlb), (pte)); \ 46 } while (0) 47 48 #endif /* _ASM_NIOS2_PGALLOC_H */ 49