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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.

//

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//

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//

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// or inline functions from this file, or you compile this file and link it

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//####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