[PATCH] powerpc: Merge page.h
Merge asm-ppc/page.h and asm-ppc64/page.h into asm-powerpc/page.h,
asm-powerpc/page_32.h and asm-powerpc/page_64.h
Built for PPC (common_defconfig), with ARCH=powerpc, mostly built with
ARCH=ppc (other things break the build). Built and booted on P5 LPAR
for PPC64 with ARCH=ppc/powerpc (pseries_defconfig). Mostly built for
iSeries powerpc.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/include/asm-powerpc/page_32.h b/include/asm-powerpc/page_32.h
new file mode 100644
index 0000000..3522130
--- /dev/null
+++ b/include/asm-powerpc/page_32.h
@@ -0,0 +1,38 @@
+#ifndef _ASM_POWERPC_PAGE_32_H
+#define _ASM_POWERPC_PAGE_32_H
+
+#define VM_DATA_DEFAULT_FLAGS VM_DATA_DEFAULT_FLAGS32
+
+#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 */