1 files changed, 128 insertions, 0 deletions
diff --git a/arch/sh/lib64/io.c b/arch/sh/lib64/io.c
new file mode 100644
index 000000000000..a3f3a2b8e25b
--- /dev/null
+++ b/arch/sh/lib64/io.c
@@ -0,0 +1,128 @@
+/*
+ * Copyright (C) 2000 David J. Mckay (david.mckay@st.com)
+ *
+ * May be copied or modified under the terms of the GNU General Public
+ * License.  See linux/COPYING for more information.
+ *
+ * This file contains the I/O routines for use on the overdrive board
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <asm/system.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+
+/*  Now for the string version of these functions */
+void outsb(unsigned long port, const void *addr, unsigned long count)
+{
+	int i;
+	unsigned char *p = (unsigned char *) addr;
+
+	for (i = 0; i < count; i++, p++) {
+		outb(*p, port);
+	}
+}
+EXPORT_SYMBOL(outsb);
+
+void insb(unsigned long port, void *addr, unsigned long count)
+{
+	int i;
+	unsigned char *p = (unsigned char *) addr;
+
+	for (i = 0; i < count; i++, p++) {
+		*p = inb(port);
+	}
+}
+EXPORT_SYMBOL(insb);
+
+/* For the 16 and 32 bit string functions, we have to worry about alignment.
+ * The SH does not do unaligned accesses, so we have to read as bytes and
+ * then write as a word or dword.
+ * This can be optimised a lot more, especially in the case where the data
+ * is aligned
+ */
+
+void outsw(unsigned long port, const void *addr, unsigned long count)
+{
+	int i;
+	unsigned short tmp;
+	unsigned char *p = (unsigned char *) addr;
+
+	for (i = 0; i < count; i++, p += 2) {
+		tmp = (*p) | ((*(p + 1)) << 8);
+		outw(tmp, port);
+	}
+}
+EXPORT_SYMBOL(outsw);
+
+void insw(unsigned long port, void *addr, unsigned long count)
+{
+	int i;
+	unsigned short tmp;
+	unsigned char *p = (unsigned char *) addr;
+
+	for (i = 0; i < count; i++, p += 2) {
+		tmp = inw(port);
+		p[0] = tmp & 0xff;
+		p[1] = (tmp >> 8) & 0xff;
+	}
+}
+EXPORT_SYMBOL(insw);
+
+void outsl(unsigned long port, const void *addr, unsigned long count)
+{
+	int i;
+	unsigned tmp;
+	unsigned char *p = (unsigned char *) addr;
+
+	for (i = 0; i < count; i++, p += 4) {
+		tmp = (*p) | ((*(p + 1)) << 8) | ((*(p + 2)) << 16) |
+		    ((*(p + 3)) << 24);
+		outl(tmp, port);
+	}
+}
+EXPORT_SYMBOL(outsl);
+
+void insl(unsigned long port, void *addr, unsigned long count)
+{
+	int i;
+	unsigned tmp;
+	unsigned char *p = (unsigned char *) addr;
+
+	for (i = 0; i < count; i++, p += 4) {
+		tmp = inl(port);
+		p[0] = tmp & 0xff;
+		p[1] = (tmp >> 8) & 0xff;
+		p[2] = (tmp >> 16) & 0xff;
+		p[3] = (tmp >> 24) & 0xff;
+
+	}
+}
+EXPORT_SYMBOL(insl);
+
+void memcpy_toio(void __iomem *to, const void *from, long count)
+{
+	unsigned char *p = (unsigned char *) from;
+
+	while (count) {
+		count--;
+		writeb(*p++, to++);
+	}
+}
+EXPORT_SYMBOL(memcpy_toio);
+
+void memcpy_fromio(void *to, void __iomem *from, long count)
+{
+	int i;
+	unsigned char *p = (unsigned char *) to;
+
+	for (i = 0; i < count; i++) {
+		p[i] = readb(from);
+		from++;
+	}
+}
+EXPORT_SYMBOL(memcpy_fromio);