release/src-rt-6.x/linux/linux-2.6/include/asm-m68k/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
  11 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
  12 {
  13         pte_t *pte;
  14
  15         pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
  16         if (pte) {
  17                 __flush_page_to_ram(pte);
  18                 flush_tlb_kernel_page(pte);
  19                 nocache_page(pte);
  20         }
  21
  22         return pte;
  23 }
  24
  25 static inline void pte_free_kernel(pte_t *pte)
  26 {
  27         cache_page(pte);
  28         free_page((unsigned long) pte);
  29 }
  30
  31 static inline struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address)
  32 {
  33         struct page *page = alloc_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 0);
  34         pte_t *pte;
  35
  36         if(!page)
  37                 return NULL;
  38
  39         pte = kmap(page);
  40         if (pte) {
  41                 __flush_page_to_ram(pte);
  42                 flush_tlb_kernel_page(pte);
  43                 nocache_page(pte);
  44         }
  45         kunmap(pte);
  46
  47         return page;
  48 }
  49
  50 static inline void pte_free(struct page *page)
  51 {
  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, struct page *page)
  58 {
  59         cache_page(kmap(page));
  60         kunmap(page);
  61         __free_page(page);
  62 }
  63
  64
  65 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
  66 {
  67         return get_pointer_table();
  68 }
  69
  70 static inline int pmd_free(pmd_t *pmd)
  71 {
  72         return free_pointer_table(pmd);
  73 }
  74
  75 static inline int __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd)
  76 {
  77         return free_pointer_table(pmd);
  78 }
  79
  80
  81 static inline void pgd_free(pgd_t *pgd)
  82 {
  83         pmd_free((pmd_t *)pgd);
  84 }
  85
  86 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
  87 {
  88         return (pgd_t *)get_pointer_table();
  89 }
  90
  91
  92 static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
  93 {
  94         pmd_set(pmd, pte);
  95 }
  96
  97 static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *page)
  98 {
  99         pmd_set(pmd, page_address(page));
 100 }
 101
 102 static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
 103 {
 104         pgd_set(pgd, pmd);
 105 }
 106
 107 #endif /* _MOTOROLA_PGALLOC_H */