1 files changed, 94 insertions, 0 deletions

diff --git a/arch/sh/boards/renesas/edosk7705/io.c b/arch/sh/boards/renesas/edosk7705/io.c
new file mode 100644
index 000000000000..541cea2a652f
--- /dev/null
+++ b/arch/sh/boards/renesas/edosk7705/io.c
@@ -0,0 +1,94 @@
+/*
+ * arch/sh/boards/renesas/edosk7705/io.c
+ *
+ * Copyright (C) 2001  Ian da Silva, Jeremy Siegel
+ * Based largely on io_se.c.
+ *
+ * I/O routines for Hitachi EDOSK7705 board.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <asm/io.h>
+#include <asm/edosk7705/io.h>
+#include <asm/addrspace.h>
+
+#define SMC_IOADDR      0xA2000000
+
+#define maybebadio(name,port) \
+  printk("bad PC-like io %s for port 0x%lx at 0x%08x\n", \
+         #name, (port), (__u32) __builtin_return_address(0))
+
+/* Map the Ethernet addresses as if it is at 0x300 - 0x320 */
+unsigned long sh_edosk7705_isa_port2addr(unsigned long port)
+{
+     if (port >= 0x300 && port < 0x320) {
+          /* SMC91C96 registers are 4 byte aligned rather than the
+           * usual 2 byte!
+           */
+          return SMC_IOADDR + ( (port - 0x300) * 2);
+     }
+
+     maybebadio(sh_edosk7705_isa_port2addr, port);
+     return port;
+}
+
+/* Trying to read / write bytes on odd-byte boundaries to the Ethernet
+ * registers causes problems. So we bit-shift the value and read / write
+ * in 2 byte chunks. Setting the low byte to 0 does not cause problems
+ * now as odd byte writes are only made on the bit mask / interrupt
+ * register. This may not be the case in future Mar-2003 SJD
+ */
+unsigned char sh_edosk7705_inb(unsigned long port)
+{
+        if (port >= 0x300 && port < 0x320 && port & 0x01) {
+                return (volatile unsigned char)(generic_inw(port -1) >> 8);
+        }
+        return *(volatile unsigned char *)sh_edosk7705_isa_port2addr(port);
+}
+
+unsigned int sh_edosk7705_inl(unsigned long port)
+{
+        return *(volatile unsigned long *)port;
+}
+
+void sh_edosk7705_outb(unsigned char value, unsigned long port)
+{
+        if (port >= 0x300 && port < 0x320 && port & 0x01) {
+                generic_outw(((unsigned short)value << 8), port -1);
+                return;
+        }
+        *(volatile unsigned char *)sh_edosk7705_isa_port2addr(port) = value;
+}
+
+void sh_edosk7705_outl(unsigned int value, unsigned long port)
+{
+        *(volatile unsigned long *)port = value;
+}
+
+void sh_edosk7705_insb(unsigned long port, void *addr, unsigned long count)
+{
+        unsigned char *p = addr;
+        while (count--) *p++ = sh_edosk7705_inb(port);
+}
+
+void sh_edosk7705_insl(unsigned long port, void *addr, unsigned long count)
+{
+        unsigned long *p = (unsigned long*)addr;
+        while (count--)
+                *p++ = *(volatile unsigned long *)port;
+}
+
+void sh_edosk7705_outsb(unsigned long port, const void *addr, unsigned long count)
+{
+        unsigned char *p = (unsigned char*)addr;
+        while (count--) sh_edosk7705_outb(*p++, port);
+}
+
+void sh_edosk7705_outsl(unsigned long port, const void *addr, unsigned long count)
+{
+        unsigned long *p = (unsigned long*)addr;
+        while (count--) sh_edosk7705_outl(*p++, port);
+}
+