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/*
* linux/arch/sh/boards/superh/microdev/io.c
*
* Copyright (C) 2003 Sean McGoogan (Sean.McGoogan@superh.com)
* Copyright (C) 2003, 2004 SuperH, Inc.
* Copyright (C) 2004 Paul Mundt
*
* SuperH SH4-202 MicroDev board support.
*
* May be copied or modified under the terms of the GNU General Public
* License. See linux/COPYING for more information.
*/
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/wait.h>
#include <asm/io.h>
#include <mach/microdev.h>
/*
* we need to have a 'safe' address to re-direct all I/O requests
* that we do not explicitly wish to handle. This safe address
* must have the following properies:
*
* * writes are ignored (no exception)
* * reads are benign (no side-effects)
* * accesses of width 1, 2 and 4-bytes are all valid.
*
* The Processor Version Register (PVR) has these properties.
*/
#define PVR 0xff000030 /* Processor Version Register */
#define IO_IDE2_BASE 0x170ul /* I/O base for SMSC FDC37C93xAPM IDE #2 */
#define IO_IDE1_BASE 0x1f0ul /* I/O base for SMSC FDC37C93xAPM IDE #1 */
#define IO_ISP1161_BASE 0x290ul /* I/O port for Philips ISP1161x USB chip */
#define IO_SERIAL2_BASE 0x2f8ul /* I/O base for SMSC FDC37C93xAPM Serial #2 */
#define IO_LAN91C111_BASE 0x300ul /* I/O base for SMSC LAN91C111 Ethernet chip */
#define IO_IDE2_MISC 0x376ul /* I/O misc for SMSC FDC37C93xAPM IDE #2 */
#define IO_SUPERIO_BASE 0x3f0ul /* I/O base for SMSC FDC37C93xAPM SuperIO chip */
#define IO_IDE1_MISC 0x3f6ul /* I/O misc for SMSC FDC37C93xAPM IDE #1 */
#define IO_SERIAL1_BASE 0x3f8ul /* I/O base for SMSC FDC37C93xAPM Serial #1 */
#define IO_ISP1161_EXTENT 0x04ul /* I/O extent for Philips ISP1161x USB chip */
#define IO_LAN91C111_EXTENT 0x10ul /* I/O extent for SMSC LAN91C111 Ethernet chip */
#define IO_SUPERIO_EXTENT 0x02ul /* I/O extent for SMSC FDC37C93xAPM SuperIO chip */
#define IO_IDE_EXTENT 0x08ul /* I/O extent for IDE Task Register set */
#define IO_SERIAL_EXTENT 0x10ul
#define IO_LAN91C111_PHYS 0xa7500000ul /* Physical address of SMSC LAN91C111 Ethernet chip */
#define IO_ISP1161_PHYS 0xa7700000ul /* Physical address of Philips ISP1161x USB chip */
#define IO_SUPERIO_PHYS 0xa7800000ul /* Physical address of SMSC FDC37C93xAPM SuperIO chip */
/*
* map I/O ports to memory-mapped addresses
*/
void __iomem *microdev_ioport_map(unsigned long offset, unsigned int len)
{
unsigned long result;
if ((offset >= IO_LAN91C111_BASE) &&
(offset < IO_LAN91C111_BASE + IO_LAN91C111_EXTENT)) {
/*
* SMSC LAN91C111 Ethernet chip
*/
result = IO_LAN91C111_PHYS + offset - IO_LAN91C111_BASE;
} else if ((offset >= IO_SUPERIO_BASE) &&
(offset < IO_SUPERIO_BASE + IO_SUPERIO_EXTENT)) {
/*
* SMSC FDC37C93xAPM SuperIO chip
*
* Configuration Registers
*/
result = IO_SUPERIO_PHYS + (offset << 1);
} else if (((offset >= IO_IDE1_BASE) &&
(offset < IO_IDE1_BASE + IO_IDE_EXTENT)) ||
(offset == IO_IDE1_MISC)) {
/*
* SMSC FDC37C93xAPM SuperIO chip
*
* IDE #1
*/
result = IO_SUPERIO_PHYS + (offset << 1);
} else if (((offset >= IO_IDE2_BASE) &&
(offset < IO_IDE2_BASE + IO_IDE_EXTENT)) ||
(offset == IO_IDE2_MISC)) {
/*
* SMSC FDC37C93xAPM SuperIO chip
*
* IDE #2
*/
result = IO_SUPERIO_PHYS + (offset << 1);
} else if ((offset >= IO_SERIAL1_BASE) &&
(offset < IO_SERIAL1_BASE + IO_SERIAL_EXTENT)) {
/*
* SMSC FDC37C93xAPM SuperIO chip
*
* Serial #1
*/
result = IO_SUPERIO_PHYS + (offset << 1);
} else if ((offset >= IO_SERIAL2_BASE) &&
(offset < IO_SERIAL2_BASE + IO_SERIAL_EXTENT)) {
/*
* SMSC FDC37C93xAPM SuperIO chip
*
* Serial #2
*/
result = IO_SUPERIO_PHYS + (offset << 1);
} else if ((offset >= IO_ISP1161_BASE) &&
(offset < IO_ISP1161_BASE + IO_ISP1161_EXTENT)) {
/*
* Philips USB ISP1161x chip
*/
result = IO_ISP1161_PHYS + offset - IO_ISP1161_BASE;
} else {
/*
* safe default.
*/
printk("Warning: unexpected port in %s( offset = 0x%lx )\n",
__func__, offset);
result = PVR;
}
return (void __iomem *)result;
}
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