--- zzzz-none-000/linux-2.4.17/include/asm-mips/page.h	2000-08-09 20:46:02.000000000 +0000
+++ sangam-fb-322/linux-2.4.17/include/asm-mips/page.h	2004-11-24 13:21:31.000000000 +0000
@@ -1,5 +1,4 @@
-/* $Id: page.h,v 1.9 2000/02/24 00:13:19 ralf Exp $
- *
+/*
  * Definitions for page handling
  *
  * This file is subject to the terms and conditions of the GNU General Public
@@ -23,6 +22,41 @@
 #define BUG() do { printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__); *(int *)0=0; } while (0)
 #define PAGE_BUG(page) do {  BUG(); } while (0)
 
+/*
+ * Prototypes for clear_page / copy_page variants with processor dependant
+ * optimizations.
+ */
+void andes_clear_page(void * page);
+void mips32_clear_page_dc(unsigned long page);
+void mips32_clear_page_sc(unsigned long page);
+void r3k_clear_page(void * page);
+void r4k_clear_page_d16(void * page);
+void r4k_clear_page_d32(void * page);
+void r4k_clear_page_r4600_v1(void * page);
+void r4k_clear_page_r4600_v2(void * page);
+void r4k_clear_page_s16(void * page);
+void r4k_clear_page_s32(void * page);
+void r4k_clear_page_s64(void * page);
+void r4k_clear_page_s128(void * page);
+void r5432_clear_page_d32(void * page);
+void rm7k_clear_page(void * page);
+void sb1_clear_page(void * page);
+void andes_copy_page(void * to, void * from);
+void mips32_copy_page_dc(unsigned long to, unsigned long from);
+void mips32_copy_page_sc(unsigned long to, unsigned long from);
+void r3k_copy_page(void * to, void * from);
+void r4k_copy_page_d16(void * to, void * from);
+void r4k_copy_page_d32(void * to, void * from);
+void r4k_copy_page_r4600_v1(void * to, void * from);
+void r4k_copy_page_r4600_v2(void * to, void * from);
+void r4k_copy_page_s16(void * to, void * from);
+void r4k_copy_page_s32(void * to, void * from);
+void r4k_copy_page_s64(void * to, void * from);
+void r4k_copy_page_s128(void * to, void * from);
+void r5432_copy_page_d32(void * to, void * from);
+void rm7k_copy_page(void * to, void * from);
+void sb1_copy_page(void * to, void * from);
+
 extern void (*_clear_page)(void * page);
 extern void (*_copy_page)(void * to, void * from);
 
@@ -75,9 +109,20 @@
 #define PAGE_OFFSET	0x80000000UL
 #define __pa(x)		((unsigned long) (x) - PAGE_OFFSET)
 #define __va(x)		((void *)((unsigned long) (x) + PAGE_OFFSET))
+
+#if defined(CONFIG_MIPS_AVALANCHE_PAGING)
+#define virt_to_page(kaddr)    phys_to_page(__pa(kaddr))
+#else 
 #define virt_to_page(kaddr)	(mem_map + (__pa(kaddr) >> PAGE_SHIFT))
+#endif /* CONFIG_MIPS_AVALANCHE_PAGING */
+
 #define VALID_PAGE(page)	((page - mem_map) < max_mapnr)
 
+
+#if defined(CONFIG_MIPS_AVALANCHE_PAGING)
+#define __MEMORY_START		CONFIG_MEMORY_START
+#endif /* CONFIG_MIPS_AVALANCHE_PAGING */
+
 #endif /* defined (__KERNEL__) */
 
 #endif /* __ASM_PAGE_H */