1#ifndef _ASM_M32R_PGALLOC_H 2#define _ASM_M32R_PGALLOC_H 3 4#include <linux/mm.h> 5 6#include <asm/io.h> 7 8#define pmd_populate_kernel(mm, pmd, pte) \ 9 set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte))) 10 11static __inline__ void pmd_populate(struct mm_struct *mm, pmd_t *pmd, 12 pgtable_t pte) 13{ 14 set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte))); 15} 16#define pmd_pgtable(pmd) pmd_page(pmd) 17 18/* 19 * Allocate and free page tables. 20 */ 21static __inline__ pgd_t *pgd_alloc(struct mm_struct *mm) 22{ 23 pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO); 24 25 return pgd; 26} 27 28static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) 29{ 30 free_page((unsigned long)pgd); 31} 32 33static __inline__ pte_t *pte_alloc_one_kernel(struct mm_struct *mm, 34 unsigned long address) 35{ 36 pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO); 37 38 return pte; 39} 40 41static __inline__ pgtable_t pte_alloc_one(struct mm_struct *mm, 42 unsigned long address) 43{ 44 struct page *pte = alloc_page(GFP_KERNEL|__GFP_ZERO); 45 46 pgtable_page_ctor(pte); 47 return pte; 48} 49 50static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) 51{ 52 free_page((unsigned long)pte); 53} 54 55static inline void pte_free(struct mm_struct *mm, pgtable_t pte) 56{ 57 pgtable_page_dtor(pte); 58 __free_page(pte); 59} 60 61#define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, (pte)) 62 63/* 64 * allocating and freeing a pmd is trivial: the 1-entry pmd is 65 * inside the pgd, so has no extra memory associated with it. 66 * (In the PAE case we free the pmds as part of the pgd.) 67 */ 68 69#define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); }) 70#define pmd_free(mm, x) do { } while (0) 71#define __pmd_free_tlb(tlb, x, addr) do { } while (0) 72#define pgd_populate(mm, pmd, pte) BUG() 73 74#define check_pgt_cache() do { } while (0) 75 76#endif /* _ASM_M32R_PGALLOC_H */ 77