diff -urP linux-2.6.6/include/asm-sparc/io.h linux-2.6.6-mw1/include/asm-sparc/io.h
--- linux-2.6.6/include/asm-sparc/io.h	Mon May 10 04:32:00 2004
+++ linux-2.6.6-mw1/include/asm-sparc/io.h	Wed May 26 13:26:38 2004
@@ -207,6 +207,70 @@
 	return (void *) dst;
 }
 
+static inline void *
+_memset_io(void *dst, int c, __kernel_size_t n)
+{
+	char *d = dst;
+
+	while (n--) {
+		writeb(c, d);
+		d++;
+	}
+
+	return dst;
+}
+
+#define memset_io(d,c,sz)	\
+	_memset_io((void *)d,(int)c,(__kernel_size_t)sz)
+
+static inline void *
+_memcpy_fromio(void *dst, unsigned long src, __kernel_size_t n)
+{
+	char *d = dst;
+
+	while (n--) {
+		char tmp = readb(src);
+		*d++ = tmp;
+		src++;
+	}
+
+	return dst;
+}
+
+#define memcpy_fromio(d,s,sz)	\
+	_memcpy_fromio((void *)d,(unsigned long)s,(__kernel_size_t)sz)
+
+static inline void *
+_memcpy_toio(unsigned long dst, const void *src, __kernel_size_t n)
+{
+	const char *s = src;
+	unsigned long d = dst;
+
+	while (n--) {
+		char tmp = *s++;
+		writeb(tmp, d);
+		d++;
+	}
+	return (void *)dst;
+}
+
+#define memcpy_toio(d,s,sz)	\
+	_memcpy_toio((unsigned long)d,(const void *)s,(__kernel_size_t)sz)
+
+static inline int check_signature(unsigned long io_addr,
+				  const unsigned char *signature,
+				  int length)
+{
+	int retval = 0;
+	do {
+		if (readb(io_addr++) != *signature++)
+			goto out;
+	} while (--length);
+	retval = 1;
+out:
+	return retval;
+}
+
 #ifdef __KERNEL__
 
 /*