diff options
Diffstat (limited to 'kernel/arch/sh/boards/mach-microdev/io.c')
| -rw-r--r-- | kernel/arch/sh/boards/mach-microdev/io.c | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/kernel/arch/sh/boards/mach-microdev/io.c b/kernel/arch/sh/boards/mach-microdev/io.c new file mode 100644 index 000000000..acdafb0c6 --- /dev/null +++ b/kernel/arch/sh/boards/mach-microdev/io.c @@ -0,0 +1,125 @@ +/* + * 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; +} |