1 files changed, 86 insertions, 0 deletions

diff --git a/arch/nios2/include/asm/pgalloc.h b/arch/nios2/include/asm/pgalloc.h
new file mode 100644
index 000000000000..6e2985e0a7b9
--- /dev/null
+++ b/arch/nios2/include/asm/pgalloc.h
@@ -0,0 +1,86 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1994 - 2001, 2003 by Ralf Baechle
+ * Copyright (C) 1999, 2000, 2001 Silicon Graphics, Inc.
+ */
+
+#ifndef _ASM_NIOS2_PGALLOC_H
+#define _ASM_NIOS2_PGALLOC_H
+
+#include <linux/mm.h>
+
+static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
+        pte_t *pte)
+{
+        set_pmd(pmd, __pmd((unsigned long)pte));
+}
+
+static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
+        pgtable_t pte)
+{
+        set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
+}
+#define pmd_pgtable(pmd) pmd_page(pmd)
+
+/*
+ * Initialize a new pmd table with invalid pointers.
+ */
+extern void pmd_init(unsigned long page, unsigned long pagetable);
+
+extern pgd_t *pgd_alloc(struct mm_struct *mm);
+
+static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
+{
+        free_pages((unsigned long)pgd, PGD_ORDER);
+}
+
+static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
+        unsigned long address)
+{
+        pte_t *pte;
+
+        pte = (pte_t *) __get_free_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO,
+                                        PTE_ORDER);
+
+        return pte;
+}
+
+static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
+        unsigned long address)
+{
+        struct page *pte;
+
+        pte = alloc_pages(GFP_KERNEL | __GFP_REPEAT, PTE_ORDER);
+        if (pte) {
+                if (!pgtable_page_ctor(pte)) {
+                        __free_page(pte);
+                        return NULL;
+                }
+                clear_highpage(pte);
+        }
+        return pte;
+}
+
+static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
+{
+        free_pages((unsigned long)pte, PTE_ORDER);
+}
+
+static inline void pte_free(struct mm_struct *mm, struct page *pte)
+{
+        pgtable_page_dtor(pte);
+        __free_pages(pte, PTE_ORDER);
+}
+
+#define __pte_free_tlb(tlb, pte, addr)                          \
+        do {                                                    \
+                pgtable_page_dtor(pte);                         \
+                tlb_remove_page((tlb), (pte));                  \
+        } while (0)
+
+#define check_pgt_cache()       do { } while (0)
+
+#endif /* _ASM_NIOS2_PGALLOC_H */