1 files changed, 103 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/pgtable-types.h b/arch/powerpc/include/asm/pgtable-types.h
new file mode 100644
index 000000000000..43140f8b0592
--- /dev/null
+++ b/arch/powerpc/include/asm/pgtable-types.h
@@ -0,0 +1,103 @@
+#ifndef _ASM_POWERPC_PGTABLE_TYPES_H
+#define _ASM_POWERPC_PGTABLE_TYPES_H
+
+#ifdef CONFIG_STRICT_MM_TYPECHECKS
+/* These are used to make use of C type-checking. */
+
+/* PTE level */
+typedef struct { pte_basic_t pte; } pte_t;
+#define __pte(x)	((pte_t) { (x) })
+static inline pte_basic_t pte_val(pte_t x)
+{
+	return x.pte;
+}
+
+/* PMD level */
+#ifdef CONFIG_PPC64
+typedef struct { unsigned long pmd; } pmd_t;
+#define __pmd(x)	((pmd_t) { (x) })
+static inline unsigned long pmd_val(pmd_t x)
+{
+	return x.pmd;
+}
+
+/*
+ * 64 bit hash always use 4 level table. Everybody else use 4 level
+ * only for 4K page size.
+ */
+#if defined(CONFIG_PPC_BOOK3S_64) || !defined(CONFIG_PPC_64K_PAGES)
+typedef struct { unsigned long pud; } pud_t;
+#define __pud(x)	((pud_t) { (x) })
+static inline unsigned long pud_val(pud_t x)
+{
+	return x.pud;
+}
+#endif /* CONFIG_PPC_BOOK3S_64 || !CONFIG_PPC_64K_PAGES */
+#endif /* CONFIG_PPC64 */
+
+/* PGD level */
+typedef struct { unsigned long pgd; } pgd_t;
+#define __pgd(x)	((pgd_t) { (x) })
+static inline unsigned long pgd_val(pgd_t x)
+{
+	return x.pgd;
+}
+
+/* Page protection bits */
+typedef struct { unsigned long pgprot; } pgprot_t;
+#define pgprot_val(x)	((x).pgprot)
+#define __pgprot(x)	((pgprot_t) { (x) })
+
+#else
+
+/*
+ * .. while these make it easier on the compiler
+ */
+
+typedef pte_basic_t pte_t;
+#define __pte(x)	(x)
+static inline pte_basic_t pte_val(pte_t pte)
+{
+	return pte;
+}
+
+#ifdef CONFIG_PPC64
+typedef unsigned long pmd_t;
+#define __pmd(x)	(x)
+static inline unsigned long pmd_val(pmd_t pmd)
+{
+	return pmd;
+}
+
+#if defined(CONFIG_PPC_BOOK3S_64) || !defined(CONFIG_PPC_64K_PAGES)
+typedef unsigned long pud_t;
+#define __pud(x)	(x)
+static inline unsigned long pud_val(pud_t pud)
+{
+	return pud;
+}
+#endif /* CONFIG_PPC_BOOK3S_64 || !CONFIG_PPC_64K_PAGES */
+#endif /* CONFIG_PPC64 */
+
+typedef unsigned long pgd_t;
+#define __pgd(x)	(x)
+static inline unsigned long pgd_val(pgd_t pgd)
+{
+	return pgd;
+}
+
+typedef unsigned long pgprot_t;
+#define pgprot_val(x)	(x)
+#define __pgprot(x)	(x)
+
+#endif /* CONFIG_STRICT_MM_TYPECHECKS */
+/*
+ * With hash config 64k pages additionally define a bigger "real PTE" type that
+ * gathers the "second half" part of the PTE for pseudo 64k pages
+ */
+#if defined(CONFIG_PPC_64K_PAGES) && defined(CONFIG_PPC_STD_MMU_64)
+typedef struct { pte_t pte; unsigned long hidx; } real_pte_t;
+#else
+typedef struct { pte_t pte; } real_pte_t;
+#endif
+#endif /* _ASM_POWERPC_PGTABLE_TYPES_H */