Merge branch 'denx-coldfire' into coldfire-aug2007

1 files changed, 217 insertions, 4 deletions

diff --git a/include/asm-m68k/io.h b/include/asm-m68k/io.h
index 7bbdefb..114efb1 100644
--- a/include/asm-m68k/io.h
+++ b/include/asm-m68k/io.h
@@ -1,8 +1,221 @@
-#ifndef __ASM_M68K_IO_H_
-#define __ASM_M68K_IO_H_
+/*
+ * IO header file
+ *
+ * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
+ * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
 
-static inline void sync(void)
+#ifndef __ASM_M68K_IO_H__
+#define __ASM_M68K_IO_H__
+
+#include <asm/byteorder.h>
+
+#define readb(addr) in_8((volatile u8 *)(addr))
+#define writeb(b,addr) out_8((volatile u8 *)(addr), (b))
+#if !defined(__BIG_ENDIAN)
+#define readw(addr) (*(volatile u16 *) (addr))
+#define readl(addr) (*(volatile u32 *) (addr))
+#define writew(b,addr) ((*(volatile u16 *) (addr)) = (b))
+#define writel(b,addr) ((*(volatile u32 *) (addr)) = (b))
+#else
+#define readw(addr) in_le16((volatile u16 *)(addr))
+#define readl(addr) in_le32((volatile u32 *)(addr))
+#define writew(b,addr) out_le16((volatile u16 *)(addr),(b))
+#define writel(b,addr) out_le32((volatile u32 *)(addr),(b))
+#endif
+
+/*
+ * The insw/outsw/insl/outsl macros don't do byte-swapping.
+ * They are only used in practice for transferring buffers which
+ * are arrays of bytes, and byte-swapping is not appropriate in
+ * that case.  - paulus
+ */
+#define insb(port, buf, ns) _insb((u8 *)((port)+_IO_BASE), (buf), (ns))
+#define outsb(port, buf, ns)    _outsb((u8 *)((port)+_IO_BASE), (buf), (ns))
+#define insw(port, buf, ns) _insw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
+#define outsw(port, buf, ns)    _outsw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
+#define insl(port, buf, nl) _insl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
+#define outsl(port, buf, nl)    _outsl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
+
+#define inb(port)       in_8((u8 *)((port)+_IO_BASE))
+#define outb(val, port)     out_8((u8 *)((port)+_IO_BASE), (val))
+#if !defined(__BIG_ENDIAN)
+#define inw(port)       in_be16((u16 *)((port)+_IO_BASE))
+#define outw(val, port)     out_be16((u16 *)((port)+_IO_BASE), (val))
+#define inl(port)       in_be32((u32 *)((port)+_IO_BASE))
+#define outl(val, port)     out_be32((u32 *)((port)+_IO_BASE), (val))
+#else
+#define inw(port)       in_le16((u16 *)((port)+_IO_BASE))
+#define outw(val, port)     out_le16((u16 *)((port)+_IO_BASE), (val))
+#define inl(port)       in_le32((u32 *)((port)+_IO_BASE))
+#define outl(val, port)     out_le32((u32 *)((port)+_IO_BASE), (val))
+#endif
+
+extern inline void _insb(volatile u8 * port, void *buf, int ns)
+{
+	u8 *data = (u8 *) buf;
+	while (ns--)
+		*data++ = *port;
+}
+
+extern inline void _outsb(volatile u8 * port, const void *buf, int ns)
+{
+	u8 *data = (u8 *) buf;
+	while (ns--)
+		*port = *data++;
+}
+
+extern inline void _insw(volatile u16 * port, void *buf, int ns)
+{
+	u16 *data = (u16 *) buf;
+	while (ns--)
+		*data++ = __sw16(*port);
+}
+
+extern inline void _outsw(volatile u16 * port, const void *buf, int ns)
+{
+	u16 *data = (u16 *) buf;
+	while (ns--) {
+		*port = __sw16(*data);
+		data++;
+	}
+}
+
+extern inline void _insl(volatile u32 * port, void *buf, int nl)
+{
+	u32 *data = (u32 *) buf;
+	while (nl--)
+		*data++ = __sw32(*port);
+}
+
+extern inline void _outsl(volatile u32 * port, const void *buf, int nl)
+{
+	u32 *data = (u32 *) buf;
+	while (nl--) {
+		*port = __sw32(*data);
+		data++;
+	}
+}
+
+extern inline void _insw_ns(volatile u16 * port, void *buf, int ns)
+{
+	u16 *data = (u16 *) buf;
+	while (ns--)
+		*data++ = *port;
+}
+
+extern inline void _outsw_ns(volatile u16 * port, const void *buf, int ns)
+{
+	u16 *data = (u16 *) buf;
+	while (ns--) {
+		*port = *data++;
+	}
+}
+
+extern inline void _insl_ns(volatile u32 * port, void *buf, int nl)
+{
+	u32 *data = (u32 *) buf;
+	while (nl--)
+		*data++ = *port;
+}
+
+extern inline void _outsl_ns(volatile u32 * port, const void *buf, int nl)
+{
+	u32 *data = (u32 *) buf;
+	while (nl--) {
+		*port = *data;
+		data++;
+	}
+}
+
+/*
+ * The *_ns versions below don't do byte-swapping.
+ * Neither do the standard versions now, these are just here
+ * for older code.
+ */
+#define insw_ns(port, buf, ns)  _insw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
+#define outsw_ns(port, buf, ns) _outsw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
+#define insl_ns(port, buf, nl)  _insl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
+#define outsl_ns(port, buf, nl) _outsl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
+
+#define IO_SPACE_LIMIT ~0
+
+/*
+ * 8, 16 and 32 bit, big and little endian I/O operations, with barrier.
+ */
+extern inline int in_8(volatile u8 * addr)
+{
+	return (int)*addr;
+}
+
+extern inline void out_8(volatile u8 * addr, int val)
+{
+	*addr = (u8) val;
+}
+
+extern inline int in_le16(volatile u16 * addr)
+{
+	return __sw16(*addr);
+}
+
+extern inline int in_be16(volatile u16 * addr)
+{
+	return (*addr & 0xFFFF);
+}
+
+extern inline void out_le16(volatile u16 * addr, int val)
+{
+	*addr = __sw16(val);
+}
+
+extern inline void out_be16(volatile u16 * addr, int val)
+{
+	*addr = (u16) val;
+}
+
+extern inline unsigned in_le32(volatile u32 * addr)
 {
+	return __sw32(*addr);
 }
 
-#endif /* __ASM_M68K_IO_H_ */
+extern inline unsigned in_be32(volatile u32 * addr)
+{
+	return (*addr);
+}
+
+extern inline void out_le32(volatile unsigned *addr, int val)
+{
+	*addr = __sw32(val);
+}
+
+extern inline void out_be32(volatile unsigned *addr, int val)
+{
+	*addr = val;
+}
+
+static inline void sync(void)
+{
+	/* This sync function is for PowerPC or other architecture instruction
+	 * ColdFire does not have this instruction. Dummy function, added for
+	 * compatibility (CFI driver)
+	 */
+}
+#endif				/* __ASM_M68K_IO_H__ */