1 files changed, 76 insertions, 0 deletions

diff --git a/arch/m32r/include/asm/pgalloc.h b/arch/m32r/include/asm/pgalloc.h
new file mode 100644
index 000000000000..f11a2b909cdb
--- /dev/null
+++ b/arch/m32r/include/asm/pgalloc.h
@@ -0,0 +1,76 @@
+#ifndef _ASM_M32R_PGALLOC_H
+#define _ASM_M32R_PGALLOC_H
+
+#include <linux/mm.h>
+
+#include <asm/io.h>
+
+#define pmd_populate_kernel(mm, pmd, pte)       \
+        set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))
+
+static __inline__ void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
+        pgtable_t pte)
+{
+        set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte)));
+}
+#define pmd_pgtable(pmd) pmd_page(pmd)
+
+/*
+ * Allocate and free page tables.
+ */
+static __inline__ pgd_t *pgd_alloc(struct mm_struct *mm)
+{
+        pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO);
+
+        return pgd;
+}
+
+static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
+{
+        free_page((unsigned long)pgd);
+}
+
+static __inline__ pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
+        unsigned long address)
+{
+        pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO);
+
+        return pte;
+}
+
+static __inline__ pgtable_t pte_alloc_one(struct mm_struct *mm,
+        unsigned long address)
+{
+        struct page *pte = alloc_page(GFP_KERNEL|__GFP_ZERO);
+
+        pgtable_page_ctor(pte);
+        return pte;
+}
+
+static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
+{
+        free_page((unsigned long)pte);
+}
+
+static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
+{
+        pgtable_page_dtor(pte);
+        __free_page(pte);
+}
+
+#define __pte_free_tlb(tlb, pte)        pte_free((tlb)->mm, (pte))
+
+/*
+ * allocating and freeing a pmd is trivial: the 1-entry pmd is
+ * inside the pgd, so has no extra memory associated with it.
+ * (In the PAE case we free the pmds as part of the pgd.)
+ */
+
+#define pmd_alloc_one(mm, addr)         ({ BUG(); ((pmd_t *)2); })
+#define pmd_free(mm, x)                 do { } while (0)
+#define __pmd_free_tlb(tlb, x)          do { } while (0)
+#define pgd_populate(mm, pmd, pte)      BUG()
+
+#define check_pgt_cache()       do { } while (0)
+
+#endif /* _ASM_M32R_PGALLOC_H */