1 files changed, 47 insertions, 0 deletions
diff --git a/kernel/arch/avr32/include/asm/pgtable-2level.h b/kernel/arch/avr32/include/asm/pgtable-2level.h
new file mode 100644
index 000000000..425dd567b
--- /dev/null
+++ b/kernel/arch/avr32/include/asm/pgtable-2level.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2004-2006 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __ASM_AVR32_PGTABLE_2LEVEL_H
+#define __ASM_AVR32_PGTABLE_2LEVEL_H
+
+#include <asm-generic/pgtable-nopmd.h>
+
+/*
+ * Traditional 2-level paging structure
+ */
+#define PGDIR_SHIFT	22
+#define PTRS_PER_PGD	1024
+
+#define PTRS_PER_PTE	1024
+
+#ifndef __ASSEMBLY__
+#define pte_ERROR(e) \
+	printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e))
+#define pgd_ERROR(e) \
+	printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))
+
+/*
+ * Certain architectures need to do special things when PTEs
+ * within a page table are directly modified.  Thus, the following
+ * hook is made available.
+ */
+#define set_pte(pteptr, pteval) (*(pteptr) = pteval)
+#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep, pteval)
+
+/*
+ * (pmds are folded into pgds so this doesn't get actually called,
+ * but the define is needed for a generic inline function.)
+ */
+#define set_pmd(pmdptr, pmdval) (*(pmdptr) = pmdval)
+
+#define pte_pfn(x)		((unsigned long)(((x).pte >> PAGE_SHIFT)))
+#define pfn_pte(pfn, prot)	__pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
+#define pfn_pmd(pfn, prot)	__pmd(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* __ASM_AVR32_PGTABLE_2LEVEL_H */