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#ifndef CYGONCE_HAL_XPIC_H
#define CYGONCE_HAL_XPIC_H
 
//=============================================================================
//
//      hal_xpic.h
//
//      HAL eXternal Programmable Interrupt Controller support
//
//=============================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####                                            
// -------------------------------------------                              
// This file is part of eCos, the Embedded Configurable Operating System.   
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, 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.,    
// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 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 v2.                                               
//
// This exception does not invalidate any other reasons why a work based    
// on this file might be covered by the GNU General Public License.         
// -------------------------------------------                              
// ####ECOSGPLCOPYRIGHTEND####                                              
//=============================================================================
//#####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