1 files changed, 133 insertions, 0 deletions
diff --git a/arch/arm/mach-ixp2000/include/mach/io.h b/arch/arm/mach-ixp2000/include/mach/io.h
new file mode 100644
index 00000000..f6552d6f
--- /dev/null
+++ b/arch/arm/mach-ixp2000/include/mach/io.h
@@ -0,0 +1,133 @@
+/*
+ * arch/arm/mach-ixp2000/include/mach/io.h
+ *
+ * Original Author: Naeem M Afzal <naeem.m.afzal@intel.com>
+ * Maintainer: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * Copyright (C) 2002  Intel Corp.
+ * Copyrgiht (C) 2003-2004 MontaVista Software, Inc.
+ *
+ * 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.
+ */
+
+#ifndef __ASM_ARM_ARCH_IO_H
+#define __ASM_ARM_ARCH_IO_H
+
+#include <mach/hardware.h>
+
+#define IO_SPACE_LIMIT		0xffffffff
+
+/*
+ * The A? revisions of the IXP2000s assert byte lanes for PCI I/O
+ * transactions the other way round (MEM transactions don't have this
+ * issue), so if we want to support those models, we need to override
+ * the standard I/O functions.
+ *
+ * B0 and later have a bit that can be set to 1 to get the proper
+ * behavior for I/O transactions, which then allows us to use the
+ * standard I/O functions.  This is what we do if the user does not
+ * explicitly ask for support for pre-B0.
+ */
+#ifdef CONFIG_IXP2000_SUPPORT_BROKEN_PCI_IO
+#define ___io(p)		((void __iomem *)((p)+IXP2000_PCI_IO_VIRT_BASE))
+
+#define alignb(addr)		(void __iomem *)((unsigned long)(addr) ^ 3)
+#define alignw(addr)		(void __iomem *)((unsigned long)(addr) ^ 2)
+
+#define outb(v,p)		__raw_writeb((v),alignb(___io(p)))
+#define outw(v,p)		__raw_writew((v),alignw(___io(p)))
+#define outl(v,p)		__raw_writel((v),___io(p))
+
+#define inb(p)		({ unsigned int __v = __raw_readb(alignb(___io(p))); __v; })
+#define inw(p)		\
+	({ unsigned int __v = (__raw_readw(alignw(___io(p)))); __v; })
+#define inl(p)		\
+	({ unsigned int __v = (__raw_readl(___io(p))); __v; })
+
+#define outsb(p,d,l)		__raw_writesb(alignb(___io(p)),d,l)
+#define outsw(p,d,l)		__raw_writesw(alignw(___io(p)),d,l)
+#define outsl(p,d,l)		__raw_writesl(___io(p),d,l)
+
+#define insb(p,d,l)		__raw_readsb(alignb(___io(p)),d,l)
+#define insw(p,d,l)		__raw_readsw(alignw(___io(p)),d,l)
+#define insl(p,d,l)		__raw_readsl(___io(p),d,l)
+
+#define __is_io_address(p)	((((unsigned long)(p)) & ~(IXP2000_PCI_IO_SIZE - 1)) == IXP2000_PCI_IO_VIRT_BASE)
+
+#define ioread8(p)						\
+	({							\
+		unsigned int __v;				\
+								\
+		if (__is_io_address(p)) {			\
+			__v = __raw_readb(alignb(p));		\
+		} else {					\
+			__v = __raw_readb(p);			\
+		}						\
+								\
+		__v;						\
+	})							\
+
+#define ioread16(p)						\
+	({							\
+		unsigned int __v;				\
+								\
+		if (__is_io_address(p)) {			\
+			__v = __raw_readw(alignw(p));		\
+		} else {					\
+			__v = le16_to_cpu(__raw_readw(p));	\
+		}						\
+								\
+		__v;						\
+	})
+
+#define ioread32(p)						\
+	({							\
+		unsigned int __v;				\
+								\
+		if (__is_io_address(p)) {			\
+			__v = __raw_readl(p);			\
+		} else {					\
+			__v = le32_to_cpu(__raw_readl(p));	\
+		}						\
+								\
+		 __v;						\
+	})
+
+#define iowrite8(v,p)						\
+	({							\
+		if (__is_io_address(p)) {			\
+			__raw_writeb((v), alignb(p));		\
+		} else {					\
+			__raw_writeb((v), p);			\
+		}						\
+	})
+
+#define iowrite16(v,p)						\
+	({							\
+		if (__is_io_address(p)) {			\
+			__raw_writew((v), alignw(p));		\
+		} else {					\
+			__raw_writew(cpu_to_le16(v), p);	\
+		}						\
+	})
+
+#define iowrite32(v,p)						\
+	({							\
+		if (__is_io_address(p)) {			\
+			__raw_writel((v), p);			\
+		} else {					\
+			__raw_writel(cpu_to_le32(v), p);	\
+		}						\
+	})
+
+#define ioport_map(port, nr)	___io(port)
+
+#define ioport_unmap(addr)
+#else
+#define __io(p)			((void __iomem *)((p)+IXP2000_PCI_IO_VIRT_BASE))
+#endif
+
+
+#endif