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#ifndef CYGONCE_HAL_PLF_INTR_H
#define CYGONCE_HAL_PLF_INTR_H
 
//==========================================================================
//
//      plf_intr.h
//
//      Atlas Interrupt and clock 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
// Contributors: nickg, jskov,
//               gthomas, jlarmour, dmoseley, michael anburaj <michaelanburaj@hotmail.com>
// Date:         2000-06-06
// Purpose:      Define Interrupt support
// Description:  The macros defined here provide the HAL APIs for handling
//               interrupts and the clock for the Atlas board.
//              
// Usage:
//              #include <cyg/hal/plf_intr.h>
//              ...
//              
//
//####DESCRIPTIONEND####
//
//==========================================================================
 
#include <pkgconf/hal.h>
 
// First an assembly safe part
 
//--------------------------------------------------------------------------
// Interrupt vectors.
 
#ifndef CYGHWR_HAL_INTERRUPT_VECTORS_DEFINED
 
// These are decoded via the IP bits of the cause
// register when an external interrupt is delivered.
 
#define CYGNUM_HAL_INTERRUPT_SER                 0
#define CYGNUM_HAL_INTERRUPT_TIM0                1
#define CYGNUM_HAL_INTERRUPT_2                   2
#define CYGNUM_HAL_INTERRUPT_3                   3
#define CYGNUM_HAL_INTERRUPT_FPGA_RTC            4
#define CYGNUM_HAL_INTERRUPT_COREHI              5
#define CYGNUM_HAL_INTERRUPT_CORELO              6
#define CYGNUM_HAL_INTERRUPT_7                   7
#define CYGNUM_HAL_INTERRUPT_PCIA                8
#define CYGNUM_HAL_INTERRUPT_PCIB                9
#define CYGNUM_HAL_INTERRUPT_PCIC               10
#define CYGNUM_HAL_INTERRUPT_PCID               11
#define CYGNUM_HAL_INTERRUPT_ENUM               12
#define CYGNUM_HAL_INTERRUPT_DEG                13
#define CYGNUM_HAL_INTERRUPT_ATXFAIL            14
#define CYGNUM_HAL_INTERRUPT_INTA               15
#define CYGNUM_HAL_INTERRUPT_INTB               16
#define CYGNUM_HAL_INTERRUPT_INTC               17
#define CYGNUM_HAL_INTERRUPT_INTD               18
#define CYGNUM_HAL_INTERRUPT_SERR               19
#define CYGNUM_HAL_INTERRUPT_HW1                20
#define CYGNUM_HAL_INTERRUPT_HW2                21
#define CYGNUM_HAL_INTERRUPT_HW3                22
#define CYGNUM_HAL_INTERRUPT_HW4                23
#define CYGNUM_HAL_INTERRUPT_HW5                24
 
// Min/Max ISR numbers and how many there are
#define CYGNUM_HAL_ISR_MIN                     0
#define CYGNUM_HAL_ISR_MAX                     24
#define CYGNUM_HAL_ISR_COUNT                   25
 
#define CYGNUM_HAL_INTERRUPT_DEBUG_UART        CYGNUM_HAL_INTERRUPT_SER
 
#define CYGNUM_HAL_INTERRUPT_RTC CYGNUM_HAL_INTERRUPT_HW5
 
#define CYGHWR_HAL_INTERRUPT_VECTORS_DEFINED
 
#endif
 
 
//--------------------------------------------------------------------------
#ifndef __ASSEMBLER__
 
#include <cyg/infra/cyg_type.h>
 
//--------------------------------------------------------------------------
// Interrupt controller access.
 
#ifndef CYGHWR_HAL_INTERRUPT_CONTROLLER_ACCESS_DEFINED
 
// Array which stores the configured priority levels for the configured
// interrupts.
externC volatile CYG_BYTE hal_interrupt_level[CYGNUM_HAL_ISR_COUNT];
 
#define HAL_INTERRUPT_MASK( _vector_ )                                  \
{                                                                       \
    cyg_uint32 __vector = _vector_;                                     \
                                                                        \
    if( (_vector_) < CYGNUM_HAL_INTERRUPT_HW1 )                         \
        HAL_WRITE_UINT32( HAL_ATLAS_INTRSTEN, (1<<(_vector_)) );        \
    else                                                                \
    {                                                                   \
        __vector -= (CYGNUM_HAL_INTERRUPT_HW1-1);                       \
                                                                        \
        asm volatile (                                                  \
            "mfc0   $3,$12\n"                                           \
            "la     $2,0x00000400\n"                                    \
            "sllv   $2,$2,%0\n"                                         \
            "nor    $2,$2,$0\n"                                         \
            "and    $3,$3,$2\n"                                         \
            "mtc0   $3,$12\n"                                           \
            "nop; nop; nop\n"                                           \
            :                                                           \
            : "r"(__vector)                                             \
            : "$2", "$3"                                                \
            );                                                          \
    }                                                                   \
}
 
#define HAL_INTERRUPT_UNMASK( _vector_ )                                \
{                                                                       \
    cyg_uint32 __vector = _vector_;                                     \
                                                                        \
    if( (__vector) < CYGNUM_HAL_INTERRUPT_HW1 )                         \
    {                                                                   \
        HAL_WRITE_UINT32( HAL_ATLAS_INTSETEN, (1<<(__vector)) );        \
        __vector = 0;                                                   \
    }                                                                   \
    else                                                                \
        __vector -= (CYGNUM_HAL_INTERRUPT_HW1-1);                       \
                                                                        \
    asm volatile (                                                      \
        "mfc0   $3,$12\n"                                               \
        "la     $2,0x00000400\n"                                        \
        "sllv   $2,$2,%0\n"                                             \
        "or     $3,$3,$2\n"                                             \
        "mtc0   $3,$12\n"                                               \
        "nop; nop; nop\n"                                               \
        :                                                               \
        : "r"(__vector)                                                 \
        : "$2", "$3"                                                    \
        );                                                              \
}
 
#define HAL_INTERRUPT_ACKNOWLEDGE( _vector_ )           \
{                                                       \
    cyg_uint32 __vector = _vector_;                     \
                                                        \
    if( __vector >= CYGNUM_HAL_INTERRUPT_HW1 )          \
        __vector -= (CYGNUM_HAL_INTERRUPT_HW1-1);       \
    else                                                \
        __vector = 0;                                   \
                                                        \
    asm volatile (                                      \
        "mfc0   $3,$13\n"                               \
        "la     $2,0x00000400\n"                        \
        "sllv   $2,$2,%0\n"                             \
        "nor    $2,$2,$0\n"                             \
        "and    $3,$3,$2\n"                             \
        "mtc0   $3,$13\n"                               \
        "nop; nop; nop\n"                               \
        :                                               \
        : "r"(__vector)                                 \
        : "$2", "$3"                                    \
        );                                              \
                                                        \
}
 
#define HAL_INTERRUPT_CONFIGURE( _vector_, _level_, _up_ )   \
{                                                            \
}
 
#define HAL_INTERRUPT_SET_LEVEL( _vector_, _level_ )         \
{                                                            \
}
 
#define CYGHWR_HAL_INTERRUPT_CONTROLLER_ACCESS_DEFINED
 
#endif
 
 
//--------------------------------------------------------------------------
// Control-C support.
 
#if defined(CYGDBG_HAL_MIPS_DEBUG_GDB_CTRLC_SUPPORT)
 
# define CYGHWR_HAL_GDB_PORT_VECTOR CYGNUM_HAL_INTERRUPT_SER
 
externC cyg_uint32 hal_ctrlc_isr(CYG_ADDRWORD vector, CYG_ADDRWORD data);
 
# define HAL_CTRLC_ISR hal_ctrlc_isr
 
#endif
 
 
//----------------------------------------------------------------------------
// Reset.
#ifndef CYGHWR_HAL_RESET_DEFINED
extern void hal_atlas_reset( void );
#define CYGHWR_HAL_RESET_DEFINED
#define HAL_PLATFORM_RESET()             hal_atlas_reset()
 
#define HAL_PLATFORM_RESET_ENTRY 0xbfc00000
 
#endif // CYGHWR_HAL_RESET_DEFINED
 
#endif // __ASSEMBLER__
 
//--------------------------------------------------------------------------
#endif // ifndef CYGONCE_HAL_PLF_INTR_H
// End of plf_intr.h