--- linux-2.6.22.14/include/asm-mips/rb/rb400.h	1970-01-01 03:00:00.000000000 +0300
+++ linux/include/asm-mips/rb/rb400.h	2008-01-15 10:54:46.000000000 +0200
@@ -0,0 +1,15 @@
+#ifndef MT_RB400_H
+#define MT_RB400_H
+
+#define IRQ_BASE 16
+#define PCI_IRQ_BASE 48
+
+static inline unsigned rb400_readl(unsigned addr) {
+    return *(volatile unsigned *) addr;
+}
+
+static inline void rb400_writel(unsigned val, unsigned addr) {
+    *(volatile unsigned *) addr = val;
+}
+
+#endif