#ifndef CYGONCE_HAL_IO_H
#define CYGONCE_HAL_IO_H

//=============================================================================
//
//      hal_io.h
//
//      HAL device IO register support.
//
//=============================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####                                            
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// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
//
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// version.                                                                 
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// for more details.                                                        
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//
// As a special exception, if other files instantiate templates or use      
// macros or inline functions from this file, or you compile this file      
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// this file does not by itself cause the resulting work to be covered by   
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// General Public License v2.                                               
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//=============================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):   nickg
// Contributors:nickg, jskov
// Date:        1999-04-24
// Purpose:     Define IO register support
// Description: The macros defined here provide the HAL APIs for handling
//              device IO control registers.
//              
// Usage:
//              #include <cyg/hal/hal_io.h>
//              ...
//              
//
//####DESCRIPTIONEND####
//
//=============================================================================

#include <cyg/infra/cyg_type.h>
#include <cyg/hal/var_io.h>

//-----------------------------------------------------------------------------
// IO Register address.
// This type is for recording the address of an IO register.

typedef volatile CYG_ADDRWORD HAL_IO_REGISTER;

//-----------------------------------------------------------------------------
// BYTE Register access.
// Individual and vectorized access to 8 bit registers.

#define HAL_READ_UINT8( _register_, _value_ )           \
    CYG_MACRO_START                                     \
    ((_value_) = *((volatile CYG_BYTE *)(_register_))); \
    CYG_MACRO_END

#define HAL_WRITE_UINT8( _register_, _value_ )          \
    CYG_MACRO_START                                     \
    (*((volatile CYG_BYTE *)(_register_)) = (_value_)); \
    CYG_MACRO_END

#define HAL_READ_UINT8_VECTOR( _register_, _buf_, _count_, _step_ )     \
    CYG_MACRO_START                                                     \
    cyg_count32 _i_,_j_;                                                \
    for( _i_ = 0, _j_ = 0; _i_ < (_count_); _i_++, _j_ += (_step_)) {   \
        (_buf_)[_i_] = ((volatile CYG_BYTE *)(_register_))[_j_];        \
    }                                                                   \
    CYG_MACRO_END

#define HAL_WRITE_UINT8_VECTOR( _register_, _buf_, _count_, _step_ )    \
    CYG_MACRO_START                                                     \
    cyg_count32 _i_,_j_;                                                \
    for( _i_ = 0, _j_ = 0; _i_ < (_count_); _i_++, _j_ += (_step_)) {   \
        ((volatile CYG_BYTE *)(_register_))[_j_] = (_buf_)[_i_];        \
    }                                                                   \
    CYG_MACRO_END


//-----------------------------------------------------------------------------
// 16 bit access.
// Individual and vectorized access to 16 bit registers.
    
#define HAL_READ_UINT16( _register_, _value_ )                  \
    CYG_MACRO_START                                             \
    ((_value_) = *((volatile CYG_WORD16 *)(_register_)));       \
    CYG_MACRO_END

#define HAL_WRITE_UINT16( _register_, _value_ )                 \
    CYG_MACRO_START                                             \
    (*((volatile CYG_WORD16 *)(_register_)) = (_value_));       \
    CYG_MACRO_END

#define HAL_READ_UINT16_VECTOR( _register_, _buf_, _count_, _step_ )    \
    CYG_MACRO_START                                                     \
    cyg_count32 _i_,_j_;                                                \
    for( _i_ = 0, _j_ = 0; _i_ < (_count_); _i_++, _j_ += (_step_)) {   \
        (_buf_)[_i_] = ((volatile CYG_WORD16 *)(_register_))[_j_];      \
    }                                                                   \
    CYG_MACRO_END

#define HAL_WRITE_UINT16_VECTOR( _register_, _buf_, _count_, _step_ )   \
    CYG_MACRO_START                                                     \
    cyg_count32 _i_,_j_;                                                \
    for( _i_ = 0, _j_ = 0; _i_ < (_count_); _i_++, _j_ += (_step_)) {   \
        ((volatile CYG_WORD16 *)(_register_))[_j_] = (_buf_)[_i_];      \
    }                                                                   \
    CYG_MACRO_END

//-----------------------------------------------------------------------------
// 32 bit access.
// Individual and vectorized access to 32 bit registers.
    
#define HAL_READ_UINT32( _register_, _value_ )                  \
    CYG_MACRO_START                                             \
    ((_value_) = *((volatile CYG_WORD32 *)(_register_)));       \
    CYG_MACRO_END

#define HAL_WRITE_UINT32( _register_, _value_ )                 \
    CYG_MACRO_START                                             \
    (*((volatile CYG_WORD32 *)(_register_)) = (_value_));       \
    CYG_MACRO_END

#define HAL_READ_UINT32_VECTOR( _register_, _buf_, _count_, _step_ )    \
    CYG_MACRO_START                                                     \
    cyg_count32 _i_,_j_;                                                \
    for( _i_ = 0, _j_ = 0; _i_ < (_count_); _i_++, _j_ += (_step_)) {   \
        (_buf_)[_i_] = ((volatile CYG_WORD32 *)(_register_))[_j_];      \
    }                                                                   \
    CYG_MACRO_END

#define HAL_WRITE_UINT32_VECTOR( _register_, _buf_, _count_, _step_ )   \
    CYG_MACRO_START                                                     \
    cyg_count32 _i_,_j_;                                                \
    for( _i_ = 0, _j_ = 0; _i_ < (_count_); _i_++, _j_ += (_step_)) {   \
        ((volatile CYG_WORD32 *)(_register_))[_j_] = (_buf_)[_i_];      \
    }                                                                   \
    CYG_MACRO_END
    
//-----------------------------------------------------------------------------
#endif // ifndef CYGONCE_HAL_IO_H
// End of hal_io.h