gt64240_dep.h

一个2.4.21版本的嵌入式linux内核

/***********************************************************************
 * Copyright 2001 MontaVista Software Inc.
 * Author: Jun Sun, [e-mail] or [e-mail]
 *
 * arch/mips/gt64240/gt64240-dep.h
 *     Board-dependent definitions for GT-64120 chip.
 *
 * 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.
 ***********************************************************************
 */

#ifndef _ASM_GT64240_DEP_H
#define _ASM_GT64240_DEP_H

#include <asm/addrspace.h>		/* for KSEG1ADDR() */
#include <asm/byteorder.h>		/* for cpu_to_le32() */

/*
 * PCI address allocation
 */
#if 0
#define GT_PCI_MEM_BASE    (0x22000000)
#define GT_PCI_MEM_SIZE    GT_DEF_PCI0_MEM0_SIZE
#define GT_PCI_IO_BASE     (0x20000000)
#define GT_PCI_IO_SIZE     GT_DEF_PCI0_IO_SIZE
#endif

extern unsigned long gt64240_base;

#define GT64240_BASE       (gt64240_base)

/*
 * Because of an error/peculiarity in the Galileo chip, we need to swap the
 * bytes when running bigendian.
 */

#define GT_WRITE(ofs, data)  \
        *(volatile u32 *)(GT64240_BASE+(ofs)) = cpu_to_le32(data)
#define GT_READ(ofs, data)   \
        *(data) = le32_to_cpu(*(volatile u32 *)(GT64240_BASE+(ofs)))
#define GT_READ_DATA(ofs)    \
        le32_to_cpu(*(volatile u32 *)(GT64240_BASE+(ofs)))

#define GT_WRITE_16(ofs, data)  \
        *(volatile u16 *)(GT64240_BASE+(ofs)) = cpu_to_le16(data)
#define GT_READ_16(ofs, data)   \
        *(data) = le16_to_cpu(*(volatile u16 *)(GT64240_BASE+(ofs)))

#define GT_WRITE_8(ofs, data)  \
        *(volatile u8 *)(GT64240_BASE+(ofs)) = data
#define GT_READ_8(ofs, data)   \
        *(data) = *(volatile u8 *)(GT64240_BASE+(ofs))

#endif  /* _ASM_GT64120_MOMENCO_OCELOT_GT64120_DEP_H */