plf_io.h

eCos操作系统源码

#ifndef CYGONCE_HAL_PLF_IO_H
#define CYGONCE_HAL_PLF_IO_H

//=============================================================================
//
//      plf_io.h
//
//      platform specific IO support
//
//=============================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
// eCos 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 or (at your option) any later version.
//
// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):    ysato
// Contributors: ysato
// Date:         2002-08-29
// Purpose:      H8MAX IO support
// Description:  The macros defined here provide the HAL APIs for handling
//               basic IO 
//              
//####DESCRIPTIONEND####
//
//==========================================================================

#include <pkgconf/system.h>
#include <cyg/hal/hal_endian.h>

//-----------------------------------------------------------------------------
// IDE interface macros
//
#define HAL_IDE_NUM_CONTROLLERS 1

// Initialize the IDE controller(s).
#define HAL_IDE_INIT() (HAL_IDE_NUM_CONTROLLERS)

#define IDE_CMD_ADDRESS 0x200000
#define IDE_CTL_ADDRESS 0x600000

#define HAL_IDE_READ_UINT8( __ctlr, __regno, __val )  \
    HAL_READ_UINT8(IDE_CMD_ADDRESS + ((__regno)<<1)+1 , (__val))
#define HAL_IDE_READ_UINT16( __ctlr, __regno, __val )  \
    hal_ide_read_uint16_swap(__regno,&(__val) )
#define HAL_IDE_READ_ALTSTATUS( __ctlr, __val )  \
    HAL_READ_UINT16(IDE_CTL_ADDRESS + 12, (__val))

#define HAL_IDE_WRITE_UINT8( __ctlr, __regno, __val )  \
    HAL_WRITE_UINT16(IDE_CMD_ADDRESS + ((__regno)<<1)+1 , (__val))
#define HAL_IDE_WRITE_UINT16( __ctlr, __regno, __val )  \
    hal_ide_write_uint16_swap(__regno, __val )
#define HAL_IDE_WRITE_CONTROL( __ctlr, __val )  \
    HAL_WRITE_UINT16(IDE_CTL_ADDRESS + 12, (__val))

static inline void hal_ide_read_uint16_swap(CYG_WORD16 __regno, CYG_WORD16 *__val )
{
    CYG_WORD16 d;
    d = *(volatile CYG_WORD16 *)(IDE_CMD_ADDRESS + (__regno <<1));
    *__val = CYG_LE16_TO_CPU(d);
}

static inline void hal_ide_write_uint16_swap(CYG_WORD16 __regno, CYG_WORD16 __val )
{
    *(volatile CYG_WORD16 *)(IDE_CMD_ADDRESS + (__regno <<1)) = CYG_CPU_TO_LE16(__val);
}
//-----------------------------------------------------------------------------
#endif
// end of plf_io.h