Merge with /pub/scm/linux/kernel/git/torvalds/linux-2.6.git

1 files changed, 40 insertions, 0 deletions

diff --git a/include/asm-powerpc/page_32.h b/include/asm-powerpc/page_32.h
new file mode 100644
index 000000000000..7259cfd85da9
--- /dev/null
+++ b/include/asm-powerpc/page_32.h
@@ -0,0 +1,40 @@
+#ifndef _ASM_POWERPC_PAGE_32_H
+#define _ASM_POWERPC_PAGE_32_H
+
+#define VM_DATA_DEFAULT_FLAGS   VM_DATA_DEFAULT_FLAGS32
+
+#define PPC_MEMSTART    0
+
+#ifndef __ASSEMBLY__
+/*
+ * The basic type of a PTE - 64 bits for those CPUs with > 32 bit
+ * physical addressing.  For now this just the IBM PPC440.
+ */
+#ifdef CONFIG_PTE_64BIT
+typedef unsigned long long pte_basic_t;
+#define PTE_SHIFT       (PAGE_SHIFT - 3)        /* 512 ptes per page */
+#define PTE_FMT         "%16Lx"
+#else
+typedef unsigned long pte_basic_t;
+#define PTE_SHIFT       (PAGE_SHIFT - 2)        /* 1024 ptes per page */
+#define PTE_FMT         "%.8lx"
+#endif
+
+struct page;
+extern void clear_pages(void *page, int order);
+static inline void clear_page(void *page) { clear_pages(page, 0); }
+extern void copy_page(void *to, void *from);
+
+/* Pure 2^n version of get_order */
+extern __inline__ int get_order(unsigned long size)
+{
+        int lz;
+
+        size = (size-1) >> PAGE_SHIFT;
+        asm ("cntlzw %0,%1" : "=r" (lz) : "r" (size));
+        return 32 - lz;
+}
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_POWERPC_PAGE_32_H */