From 8e4bff4cab0ddac6060645b0715210484d02ff40 Mon Sep 17 00:00:00 2001
From: Yuval Adam <_@yuv.al>
Date: Wed, 30 Aug 2017 08:25:59 +0000
Subject: Initial file dump from open source release

---
 arch/arm/mach-rpc/include/mach/io.h | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 arch/arm/mach-rpc/include/mach/io.h

(limited to 'arch/arm/mach-rpc/include/mach/io.h')

diff --git a/arch/arm/mach-rpc/include/mach/io.h b/arch/arm/mach-rpc/include/mach/io.h
new file mode 100644
index 00000000..707071a7
--- /dev/null
+++ b/arch/arm/mach-rpc/include/mach/io.h
@@ -0,0 +1,31 @@
+/*
+ *  arch/arm/mach-rpc/include/mach/io.h
+ *
+ *  Copyright (C) 1997 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Modifications:
+ *  06-Dec-1997	RMK	Created.
+ */
+#ifndef __ASM_ARM_ARCH_IO_H
+#define __ASM_ARM_ARCH_IO_H
+
+#include <mach/hardware.h>
+
+#define IO_SPACE_LIMIT 0xffff
+
+/*
+ * We need PC style IO addressing for:
+ *  - floppy (at 0x3f2,0x3f4,0x3f5,0x3f7)
+ *  - parport (at 0x278-0x27a, 0x27b-0x27f, 0x778-0x77a)
+ *  - 8250 serial (only for compile)
+ *
+ * These peripherals are found in an area of MMIO which looks very much
+ * like an ISA bus, but with registers at the low byte of each word.
+ */
+#define __io(a)		(PCIO_BASE + ((a) << 2))
+
+#endif
-- 
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