124 lines
4.0 KiB
C
124 lines
4.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* linux/arch/sh/boards/superh/microdev/io.c
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*
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* Copyright (C) 2003 Sean McGoogan (Sean.McGoogan@superh.com)
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* Copyright (C) 2003, 2004 SuperH, Inc.
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* Copyright (C) 2004 Paul Mundt
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*
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* SuperH SH4-202 MicroDev board support.
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*/
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#include <linux/init.h>
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#include <linux/pci.h>
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#include <linux/wait.h>
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#include <asm/io.h>
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#include <mach/microdev.h>
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/*
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* we need to have a 'safe' address to re-direct all I/O requests
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* that we do not explicitly wish to handle. This safe address
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* must have the following properies:
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*
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* * writes are ignored (no exception)
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* * reads are benign (no side-effects)
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* * accesses of width 1, 2 and 4-bytes are all valid.
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*
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* The Processor Version Register (PVR) has these properties.
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*/
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#define PVR 0xff000030 /* Processor Version Register */
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#define IO_IDE2_BASE 0x170ul /* I/O base for SMSC FDC37C93xAPM IDE #2 */
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#define IO_IDE1_BASE 0x1f0ul /* I/O base for SMSC FDC37C93xAPM IDE #1 */
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#define IO_ISP1161_BASE 0x290ul /* I/O port for Philips ISP1161x USB chip */
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#define IO_SERIAL2_BASE 0x2f8ul /* I/O base for SMSC FDC37C93xAPM Serial #2 */
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#define IO_LAN91C111_BASE 0x300ul /* I/O base for SMSC LAN91C111 Ethernet chip */
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#define IO_IDE2_MISC 0x376ul /* I/O misc for SMSC FDC37C93xAPM IDE #2 */
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#define IO_SUPERIO_BASE 0x3f0ul /* I/O base for SMSC FDC37C93xAPM SuperIO chip */
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#define IO_IDE1_MISC 0x3f6ul /* I/O misc for SMSC FDC37C93xAPM IDE #1 */
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#define IO_SERIAL1_BASE 0x3f8ul /* I/O base for SMSC FDC37C93xAPM Serial #1 */
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#define IO_ISP1161_EXTENT 0x04ul /* I/O extent for Philips ISP1161x USB chip */
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#define IO_LAN91C111_EXTENT 0x10ul /* I/O extent for SMSC LAN91C111 Ethernet chip */
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#define IO_SUPERIO_EXTENT 0x02ul /* I/O extent for SMSC FDC37C93xAPM SuperIO chip */
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#define IO_IDE_EXTENT 0x08ul /* I/O extent for IDE Task Register set */
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#define IO_SERIAL_EXTENT 0x10ul
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#define IO_LAN91C111_PHYS 0xa7500000ul /* Physical address of SMSC LAN91C111 Ethernet chip */
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#define IO_ISP1161_PHYS 0xa7700000ul /* Physical address of Philips ISP1161x USB chip */
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#define IO_SUPERIO_PHYS 0xa7800000ul /* Physical address of SMSC FDC37C93xAPM SuperIO chip */
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/*
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* map I/O ports to memory-mapped addresses
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*/
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void __iomem *microdev_ioport_map(unsigned long offset, unsigned int len)
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{
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unsigned long result;
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if ((offset >= IO_LAN91C111_BASE) &&
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(offset < IO_LAN91C111_BASE + IO_LAN91C111_EXTENT)) {
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/*
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* SMSC LAN91C111 Ethernet chip
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*/
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result = IO_LAN91C111_PHYS + offset - IO_LAN91C111_BASE;
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} else if ((offset >= IO_SUPERIO_BASE) &&
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(offset < IO_SUPERIO_BASE + IO_SUPERIO_EXTENT)) {
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/*
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* SMSC FDC37C93xAPM SuperIO chip
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*
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* Configuration Registers
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*/
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result = IO_SUPERIO_PHYS + (offset << 1);
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} else if (((offset >= IO_IDE1_BASE) &&
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(offset < IO_IDE1_BASE + IO_IDE_EXTENT)) ||
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(offset == IO_IDE1_MISC)) {
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/*
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* SMSC FDC37C93xAPM SuperIO chip
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*
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* IDE #1
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*/
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result = IO_SUPERIO_PHYS + (offset << 1);
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} else if (((offset >= IO_IDE2_BASE) &&
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(offset < IO_IDE2_BASE + IO_IDE_EXTENT)) ||
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(offset == IO_IDE2_MISC)) {
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/*
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* SMSC FDC37C93xAPM SuperIO chip
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*
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* IDE #2
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*/
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result = IO_SUPERIO_PHYS + (offset << 1);
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} else if ((offset >= IO_SERIAL1_BASE) &&
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(offset < IO_SERIAL1_BASE + IO_SERIAL_EXTENT)) {
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/*
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* SMSC FDC37C93xAPM SuperIO chip
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*
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* Serial #1
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*/
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result = IO_SUPERIO_PHYS + (offset << 1);
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} else if ((offset >= IO_SERIAL2_BASE) &&
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(offset < IO_SERIAL2_BASE + IO_SERIAL_EXTENT)) {
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/*
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* SMSC FDC37C93xAPM SuperIO chip
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*
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* Serial #2
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*/
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result = IO_SUPERIO_PHYS + (offset << 1);
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} else if ((offset >= IO_ISP1161_BASE) &&
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(offset < IO_ISP1161_BASE + IO_ISP1161_EXTENT)) {
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/*
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* Philips USB ISP1161x chip
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*/
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result = IO_ISP1161_PHYS + offset - IO_ISP1161_BASE;
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} else {
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/*
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* safe default.
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*/
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printk("Warning: unexpected port in %s( offset = 0x%lx )\n",
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__func__, offset);
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result = PVR;
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}
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return (void __iomem *)result;
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}
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