LXR linux/arch/m68k/include/asm/motorola

   1#ifndef _MOTOROLA_PGALLOC_H
   2#define _MOTOROLA_PGALLOC_H
   3
   4#include <asm/tlb.h>
   5#include <asm/tlbflush.h>
   6
   7extern pmd_t *get_pointer_table(void);
   8extern int free_pointer_table(pmd_t *);
   9
  10static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
  11{
  12        pte_t *pte;
  13
  14        pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
  15        if (pte) {
  16                __flush_page_to_ram(pte);
  17                flush_tlb_kernel_page(pte);
  18                nocache_page(pte);
  19        }
  20
  21        return pte;
  22}
  23
  24static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
  25{
  26        cache_page(pte);
  27        free_page((unsigned long) pte);
  28}
  29
  30static inline pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address)
  31{
  32        struct page *page = alloc_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 0);
  33        pte_t *pte;
  34
  35        if(!page)
  36                return NULL;
  37
  38        pte = kmap(page);
  39        __flush_page_to_ram(pte);
  40        flush_tlb_kernel_page(pte);
  41        nocache_page(pte);
  42        kunmap(page);
  43        pgtable_page_ctor(page);
  44        return page;
  45}
  46
  47static inline void pte_free(struct mm_struct *mm, pgtable_t page)
  48{
  49        pgtable_page_dtor(page);
  50        cache_page(kmap(page));
  51        kunmap(page);
  52        __free_page(page);
  53}
  54
  55static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t page,
  56                                  unsigned long address)
  57{
  58        pgtable_page_dtor(page);
  59        cache_page(kmap(page));
  60        kunmap(page);
  61        __free_page(page);
  62}
  63
  64
  65static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
  66{
  67        return get_pointer_table();
  68}
  69
  70static inline int pmd_free(struct mm_struct *mm, pmd_t *pmd)
  71{
  72        return free_pointer_table(pmd);
  73}
  74
  75static inline int __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd,
  76                                 unsigned long address)
  77{
  78        return free_pointer_table(pmd);
  79}
  80
  81
  82static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
  83{
  84        pmd_free(mm, (pmd_t *)pgd);
  85}
  86
  87static inline pgd_t *pgd_alloc(struct mm_struct *mm)
  88{
  89        return (pgd_t *)get_pointer_table();
  90}
  91
  92
  93static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
  94{
  95        pmd_set(pmd, pte);
  96}
  97
  98static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page)
  99{
 100        pmd_set(pmd, page_address(page));
 101}
 102#define pmd_pgtable(pmd) pmd_page(pmd)
 103
 104static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
 105{
 106        pgd_set(pgd, pmd);
 107}
 108
 109#endif /* _MOTOROLA_PGALLOC_H */
 110