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);
  16         if (pte) {
  17                 clear_page(pte);
  18                 __flush_page_to_ram(pte);
  19                 flush_tlb_kernel_page(pte);
  20                 nocache_page(pte);
  21         }
  22
  23         return pte;
  24 }
  25
  26 static inline void pte_free_kernel(pte_t *pte)
  27 {
  28         cache_page(pte);
  29         free_page((unsigned long) pte);
  30 }
  31
  32 static inline struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address)
  33 {
  34         struct page *page = alloc_pages(GFP_KERNEL|__GFP_REPEAT, 0);
  35         pte_t *pte;
  36
  37         if(!page)
  38                 return NULL;
  39
  40         pte = kmap(page);
  41         if (pte) {
  42                 clear_page(pte);
  43                 __flush_page_to_ram(pte);
  44                 flush_tlb_kernel_page(pte);
  45                 nocache_page(pte);
  46         }
  47         kunmap(pte);
  48
  49         return page;
  50 }
  51
  52 static inline void pte_free(struct page *page)
  53 {
  54         cache_page(kmap(page));
  55         kunmap(page);
  56         __free_page(page);
  57 }
  58
  59 static inline void __pte_free_tlb(struct mmu_gather *tlb, struct page *page)
  60 {
  61         cache_page(kmap(page));
  62         kunmap(page);
  63         __free_page(page);
  64 }
  65
  66
  67 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
  68 {
  69         return get_pointer_table();
  70 }
  71
  72 static inline int pmd_free(pmd_t *pmd)
  73 {
  74         return free_pointer_table(pmd);
  75 }
  76
  77 static inline int __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd)
  78 {
  79         return free_pointer_table(pmd);
  80 }
  81
  82
  83 static inline void pgd_free(pgd_t *pgd)
  84 {
  85         pmd_free((pmd_t *)pgd);
  86 }
  87
  88 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
  89 {
  90         return (pgd_t *)get_pointer_table();
  91 }
  92
  93
  94 static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
  95 {
  96         pmd_set(pmd, pte);
  97 }
  98
  99 static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *page)
 100 {
 101         pmd_set(pmd, page_address(page));
 102 }
 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 */