#ifndef CYGONCE_HAL_XPIC_H
#define CYGONCE_HAL_XPIC_H

//=============================================================================
//
//      hal_xpic.h
//
//      HAL eXternal Programmable Interrupt Controller support
//
//=============================================================================
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// -------------------------------------------                              
// This file is part of eCos, the Embedded Configurable Operating System.   
// 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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// on this file might be covered by the GNU General Public License.         
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//=============================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):   nickg, gthomas, hmt
// Contributors:        nickg, gthomas, hmt
// Date:        1999-01-28
// Purpose:     Define Interrupt support
// Description: The macros defined here provide the HAL APIs for handling
//              an external interrupt controller, and which interrupt is
//              used for what.
//              
// Usage:
//              #include <cyg/hal/hal_intr.h> // which includes this file
//              ...
//              
//
//####DESCRIPTIONEND####
//
//=============================================================================

#include <cyg/hal/hal_io.h>

//-----------------------------------------------------------------------------
// Interrupt controller access

// in erc32 simulator:
//  4 = UART A
//  5 = UART B
//  7 = UART error
// 12 = GPT (general purpose timer)
// 13 = RTC (realtime clock)
// 15 = watchdog

// The vector used by the Real time clock
#define CYGNUM_HAL_INTERRUPT_RTC            CYGNUM_HAL_INTERRUPT_13


/* These must be accessed word-wide to work! */
#define SPARC_MEC_INTCON              (0x01f80000)

#define SPARC_MEC_INTCON_PENDING (SPARC_MEC_INTCON + 0x48)
#define SPARC_MEC_INTCON_MASK    (SPARC_MEC_INTCON + 0x4c)
#define SPARC_MEC_INTCON_CLEAR   (SPARC_MEC_INTCON + 0x50)
#define SPARC_MEC_INTCON_FORCE   (SPARC_MEC_INTCON + 0x54)


#define HAL_INTERRUPT_MASK( _vector_ ) CYG_MACRO_START                      \
    cyg_uint32 _traps_, _mask_;                                             \
    HAL_DISABLE_TRAPS( _traps_ );                                           \
    HAL_READ_UINT32( SPARC_MEC_INTCON_MASK, _mask_ );                       \
    _mask_ |= ( 1 << (_vector_) );                                          \
    HAL_WRITE_UINT32(SPARC_MEC_INTCON_MASK,  _mask_ );                      \
    HAL_RESTORE_INTERRUPTS( _traps_ );                                      \
CYG_MACRO_END

#define HAL_INTERRUPT_UNMASK( _vector_ ) CYG_MACRO_START                    \
    cyg_uint32 _traps_, _mask_;                                             \
    HAL_DISABLE_TRAPS( _traps_ );                                           \
    HAL_READ_UINT32( SPARC_MEC_INTCON_MASK, _mask_ );                       \
    _mask_ &=~ ( 1 << (_vector_) );                                         \
    HAL_WRITE_UINT32( SPARC_MEC_INTCON_MASK, _mask_ );                      \
    HAL_RESTORE_INTERRUPTS( _traps_ );                                      \
CYG_MACRO_END

#define HAL_INTERRUPT_ACKNOWLEDGE( _vector_ ) CYG_MACRO_START               \
    cyg_uint32 _traps_;                                                     \
    HAL_DISABLE_TRAPS( _traps_ );                                           \
    HAL_WRITE_UINT32( SPARC_MEC_INTCON_CLEAR, ( 1 << (_vector_) ) );        \
    HAL_RESTORE_INTERRUPTS( _traps_ );                                      \
CYG_MACRO_END

#define HAL_INTERRUPT_CONFIGURE( _vector_, _level_, _up_ ) /* nothing */

#define HAL_INTERRUPT_SET_LEVEL( _vector_, _level_ ) /* nothing */

//-----------------------------------------------------------------------------
#endif // ifndef CYGONCE_HAL_XPIC_H
// End of hal_xpic.h
