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123 lines
4.0 KiB
123 lines
4.0 KiB
// 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 ([email protected]) |
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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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