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-rw-r--r--arch/m68k/include/asm/motorola_pgalloc.h109
1 files changed, 109 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/motorola_pgalloc.h b/arch/m68k/include/asm/motorola_pgalloc.h
new file mode 100644
index 0000000..d08bf62
--- /dev/null
+++ b/arch/m68k/include/asm/motorola_pgalloc.h
@@ -0,0 +1,109 @@
+#ifndef _MOTOROLA_PGALLOC_H
+#define _MOTOROLA_PGALLOC_H
+
+#include <asm/tlb.h>
+#include <asm/tlbflush.h>
+
+extern pmd_t *get_pointer_table(void);
+extern int free_pointer_table(pmd_t *);
+
+static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
+{
+ pte_t *pte;
+
+ pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
+ if (pte) {
+ __flush_page_to_ram(pte);
+ flush_tlb_kernel_page(pte);
+ nocache_page(pte);
+ }
+
+ return pte;
+}
+
+static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
+{
+ cache_page(pte);
+ free_page((unsigned long) pte);
+}
+
+static inline pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address)
+{
+ struct page *page = alloc_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 0);
+ pte_t *pte;
+
+ if(!page)
+ return NULL;
+
+ pte = kmap(page);
+ if (pte) {
+ __flush_page_to_ram(pte);
+ flush_tlb_kernel_page(pte);
+ nocache_page(pte);
+ }
+ kunmap(pte);
+ pgtable_page_ctor(page);
+ return page;
+}
+
+static inline void pte_free(struct mm_struct *mm, pgtable_t page)
+{
+ pgtable_page_dtor(page);
+ cache_page(kmap(page));
+ kunmap(page);
+ __free_page(page);
+}
+
+static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t page)
+{
+ pgtable_page_dtor(page);
+ cache_page(kmap(page));
+ kunmap(page);
+ __free_page(page);
+}
+
+
+static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
+{
+ return get_pointer_table();
+}
+
+static inline int pmd_free(struct mm_struct *mm, pmd_t *pmd)
+{
+ return free_pointer_table(pmd);
+}
+
+static inline int __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd)
+{
+ return free_pointer_table(pmd);
+}
+
+
+static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
+{
+ pmd_free(mm, (pmd_t *)pgd);
+}
+
+static inline pgd_t *pgd_alloc(struct mm_struct *mm)
+{
+ return (pgd_t *)get_pointer_table();
+}
+
+
+static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
+{
+ pmd_set(pmd, pte);
+}
+
+static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page)
+{
+ pmd_set(pmd, page_address(page));
+}
+#define pmd_pgtable(pmd) pmd_page(pmd)
+
+static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
+{
+ pgd_set(pgd, pmd);
+}
+
+#endif /* _MOTOROLA_PGALLOC_H */
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