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#ifndef CYGONCE_HAL_HAL_INTR_H
#define CYGONCE_HAL_HAL_INTR_H
//==========================================================================
//
//      hal_intr.h
//
//      HAL Interrupt and clock support
//
//==========================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
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// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under
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// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
// for more details.
//
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// 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
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//
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//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):    yoshinori sato
// Contributors: yoshinori sato
// Date:         2002-02-13
// Purpose:      Define Interrupt support
// Description:  The macros defined here provide the HAL APIs for handling
//               interrupts and the clock.
// Usage:
//               #include <cyg/hal/hal_intr.h>
//               ...
//              
//
//####DESCRIPTIONEND####
//
//==========================================================================
 
#include <pkgconf/hal.h>
 
#include <cyg/infra/cyg_type.h>
#include <cyg/hal/hal_io.h>
 
#include <cyg/hal/var_intr.h>
 
//--------------------------------------------------------------------------
// Static data used by HAL
 
// ISR tables
externC volatile CYG_ADDRESS    hal_interrupt_handlers[CYGNUM_HAL_ISR_COUNT];
externC volatile CYG_ADDRWORD   hal_interrupt_data[CYGNUM_HAL_ISR_COUNT];
externC volatile CYG_ADDRESS    hal_interrupt_objects[CYGNUM_HAL_ISR_COUNT];
 
// VSR table
externC volatile CYG_ADDRESS    hal_vsr_table[CYGNUM_HAL_VSR_COUNT];
 
//--------------------------------------------------------------------------
// Default ISR
// The #define is used to test whether this routine exists, and to allow
// us to call it.
 
externC cyg_uint32 hal_default_isr(CYG_ADDRWORD vector, CYG_ADDRWORD data);
 
#define HAL_DEFAULT_ISR hal_default_isr
 
//--------------------------------------------------------------------------
// Interrupt state storage
 
typedef cyg_uint32 CYG_INTERRUPT_STATE;
 
//--------------------------------------------------------------------------
 
#ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
 
// Routine to execute DSRs using separate interrupt stack
externC void hal_interrupt_stack_call_pending_DSRs(void);
#define HAL_INTERRUPT_STACK_CALL_PENDING_DSRS() \
    hal_interrupt_stack_call_pending_DSRs()
 
// these are offered solely for stack usage testing
// if they are not defined, then there is no interrupt stack.
#define HAL_INTERRUPT_STACK_BASE cyg_interrupt_stack_base
#define HAL_INTERRUPT_STACK_TOP  cyg_interrupt_stack
// use them to declare these extern however you want:
//       extern char HAL_INTERRUPT_STACK_BASE[];
//       extern char HAL_INTERRUPT_STACK_TOP[];
// is recommended
 
#endif
 
//--------------------------------------------------------------------------
// Interrupt control macros
 
#define HAL_DISABLE_INTERRUPTS(_old_)   \
        asm volatile (                  \
            "sub.l er0,er0\n\t"         \
            "stc ccr,r0l\n\t"           \
            "orc #0x80,ccr\n\t"        \
            "and.b #0xc0,r0l\n\t"       \
            "mov.l er0,%0"          \
            : "=r"(_old_)               \
            :                           \
            : "er0"                      \
            );
 
#define HAL_ENABLE_INTERRUPTS()         \
        asm volatile (                  \
            "andc #0x3f,ccr"             \
            );
 
#define HAL_RESTORE_INTERRUPTS(_old_)   \
        asm volatile (                  \
            "mov.l %0,er0\n\t"          \
            "and.b #0xc0,r0l\n\t"       \
            "stc ccr,r0h\n\t"           \
            "and.b #0x3f,r0h\n\t"       \
            "or.b r0h,r0l\n\t"          \
            "ldc r0l,ccr"               \
            :                           \
            : "r"(_old_)                \
            : "er0"                     \
            );
 
#define HAL_QUERY_INTERRUPTS(_old_)     \
        asm volatile (                  \
            "sub.l er0,er0\n\t"         \
            "stc ccr,r0l\n\t"           \
            "and.b #0xc0,r0l\n\t"       \
            "mov.l er0,%0"              \
            : "=r"(_old_)               \
            );
 
#ifndef HAL_TRANSLATE_VECTOR
 
#define HAL_TRANSLATE_VECTOR(_vector_,_index_) _index_ = (_vector_)
 
#endif
 
//--------------------------------------------------------------------------
// Interrupt and VSR attachment macros
 
#define HAL_INTERRUPT_IN_USE( _vector_, _state_)                                \
CYG_MACRO_START                                                                 \
    cyg_uint32 _index_;                                                         \
    HAL_TRANSLATE_VECTOR ((_vector_), _index_);                                 \
                                                                                \
    if( hal_interrupt_handlers[_index_] == (CYG_ADDRESS)HAL_DEFAULT_ISR )       \
        (_state_) = 0;                                                          \
    else                                                                        \
        (_state_) = 1;                                                          \
CYG_MACRO_END
 
#define HAL_INTERRUPT_ATTACH( _vector_, _isr_, _data_, _object_ )               \
CYG_MACRO_START                                                                 \
    cyg_uint32 _index_;                                                         \
    HAL_TRANSLATE_VECTOR(_vector_,_index_);                                     \
                                                                                \
    if( hal_interrupt_handlers[_index_] == (CYG_ADDRESS)HAL_DEFAULT_ISR )       \
    {                                                                           \
        hal_interrupt_handlers[_index_] = (CYG_ADDRESS)_isr_;                   \
        hal_interrupt_data[_index_] = (CYG_ADDRWORD)_data_;                     \
        hal_interrupt_objects[_index_] = (CYG_ADDRESS)_object_;                 \
    }                                                                           \
CYG_MACRO_END
 
#define HAL_INTERRUPT_DETACH( _vector_, _isr_ )                         \
CYG_MACRO_START                                                         \
    cyg_uint32 _index_;                                                 \
    HAL_TRANSLATE_VECTOR(_vector_,_index_);                             \
                                                                        \
    if( hal_interrupt_handlers[_index_] == (CYG_ADDRESS)_isr_ )         \
    {                                                                   \
        hal_interrupt_handlers[_index_] = (CYG_ADDRESS)HAL_DEFAULT_ISR; \
        hal_interrupt_data[_index_] = 0;                                \
        hal_interrupt_objects[_index_] = 0;                             \
    }                                                                   \
CYG_MACRO_END
 
#define HAL_VSR_GET( _vector_, _pvsr_ )                                 \
    *((CYG_ADDRESS *)_pvsr_) = hal_vsr_table[_vector_];
 
 
#define HAL_VSR_SET( _vector_, _vsr_, _poldvsr_ )                       \
    if( _poldvsr_ != NULL )                                             \
        *(CYG_ADDRESS *)_poldvsr_ = hal_vsr_table[_vector_];            \
    hal_vsr_table[_vector_] = (CYG_ADDRESS)_vsr_;
 
 
//--------------------------------------------------------------------------
// Interrupt controller access
// Read interrupt control registers back after writing to them. This
// ensures that the written value is not sitting in the store buffers
// when interrupts are re-enabled.
 
#define HAL_INTERRUPT_MASK( _vector_ )                          \
        hal_interrupt_mask( _vector_ )
 
#define HAL_INTERRUPT_UNMASK( _vector_ )                        \
        hal_interrupt_unmask( _vector_ )
 
#define HAL_INTERRUPT_ACKNOWLEDGE( _vector_ )                   \
        hal_interrupt_acknowledge( _vector_ )
 
#if !defined(HAL_INTERRUPT_CONFIGURE)
 
#error HAL_INTERRUPT_CONFIGURE not defined by variant
 
#endif
 
#define HAL_INTERRUPT_SET_LEVEL( _vector_, _level_ )            \
        hal_interrupt_set_level( _vector_, _level_ )
 
 
externC void hal_interrupt_mask(int vector);
externC void hal_interrupt_unmask(int vector);
externC void hal_interrupt_acknowledge(int vector);
externC void hal_interrupt_set_level(int vector,int level);
//--------------------------------------------------------------------------
// Clock control.
// This is almost all handled in the var_intr.h.
 
#ifdef CYGVAR_KERNEL_COUNTERS_CLOCK_LATENCY
#define HAL_CLOCK_LATENCY(_pvalue_) HAL_CLOCK_READ(_pvalue_)
#endif
 
//--------------------------------------------------------------------------
#endif // ifndef CYGONCE_HAL_HAL_INTR_H
// EOF hal_intr.h