plf_intr.h

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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 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):    nickg
// Contributors: nickg, jskov,
//               gthomas, jlarmour, dmoseley, michael anburaj <[e-mail]>
// 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