arch/m68k/include/asm/motorola_pgalloc.h

   1 #ifndef _MOTOROLA_PGALLOC_H
   2 #define _MOTOROLA_PGALLOC_H
   3
   4 #include <asm/tlb.h>
   5 #include <asm/tlbflush.h>
   6
   7 extern pmd_t *get_pointer_table(void);
   8 extern int free_pointer_table(pmd_t *);
   9
  10 static 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
  24 static 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
  30 static 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         if (pte) {
  40                 __flush_page_to_ram(pte);
  41                 flush_tlb_kernel_page(pte);
  42                 nocache_page(pte);
  43         }
  44         kunmap(pte);
  45         pgtable_page_ctor(page);
  46         return page;
  47 }
  48
  49 static inline void pte_free(struct mm_struct *mm, pgtable_t page)
  50 {
  51         pgtable_page_dtor(page);
  52         cache_page(kmap(page));
  53         kunmap(page);
  54         __free_page(page);
  55 }
  56
  57 static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t page)
  58 {
  59         pgtable_page_dtor(page);
  60         cache_page(kmap(page));
  61         kunmap(page);
  62         __free_page(page);
  63 }
  64
  65
  66 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
  67 {
  68         return get_pointer_table();
  69 }
  70
  71 static inline int pmd_free(struct mm_struct *mm, pmd_t *pmd)
  72 {
  73         return free_pointer_table(pmd);
  74 }
  75
  76 static inline int __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd)
  77 {
  78         return free_pointer_table(pmd);
  79 }
  80
  81
  82 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
  83 {
  84         pmd_free(mm, (pmd_t *)pgd);
  85 }
  86
  87 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
  88 {
  89         return (pgd_t *)get_pointer_table();
  90 }
  91
  92
  93 static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
  94 {
  95         pmd_set(pmd, pte);
  96 }
  97
  98 static 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
 104 static 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 */