plf_intr.h

开放源码实时操作系统源码.

// Array which stores the configured priority levels for the configured
// interrupts.
externC volatile CYG_BYTE cyg_hal_interrupt_level[CYGNUM_HAL_ISR_COUNT];

#define HAL_INTERRUPT_MASK( _vector_ )                                          \
CYG_MACRO_START                                                                 \
    if( _vector_ <= CYGNUM_HAL_INTERRUPT_COMPARE )                              \
    {                                                                           \
        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"                                                        \
            );                                                                  \
    }                                                                           \
    else                                                                        \
    {                                                                           \
        CYG_WORD32 _mask_;                                                      \
        CYG_BYTE _shift_;                                                       \
        HAL_IO_REGISTER _maskreg_ = CYGHWR_HAL_MIPS_VRC4372_INTC_MASK0 +        \
                                    cyg_hal_interrupt_level[_vector_] *         \
                                    CYGHWR_HAL_MIPS_VRC4372_INTC_MASK_OFF;      \
        HAL_READ_UINT32( _maskreg_, _mask_ );                                   \
        _shift_ = _vector_-CYGNUM_HAL_INTERRUPT_REALTIME_A;                     \
        _mask_ &= ~(1<<_shift_);                                                \
        HAL_WRITE_UINT32( _maskreg_, _mask_ );                                  \
    }                                                                           \
CYG_MACRO_END

#define HAL_INTERRUPT_UNMASK( _vector_ )                                        \
CYG_MACRO_START                                                                 \
    if( _vector_ <= CYGNUM_HAL_INTERRUPT_COMPARE )                              \
    {                                                                           \
        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"                                                        \
            );                                                                  \
    }                                                                           \
    else                                                                        \
    {                                                                           \
        CYG_WORD32 _mask_;                                                      \
        CYG_BYTE _shift_;                                                       \
        HAL_IO_REGISTER _maskreg_ = CYGHWR_HAL_MIPS_VRC4372_INTC_MASK0 +        \
                                    cyg_hal_interrupt_level[_vector_] *         \
                                    CYGHWR_HAL_MIPS_VRC4372_INTC_MASK_OFF;      \
        HAL_READ_UINT32( _maskreg_, _mask_ );                                   \
        _shift_ = _vector_-CYGNUM_HAL_INTERRUPT_REALTIME_A;                     \
        _mask_ |= 1<<_shift_;                                                   \
        HAL_WRITE_UINT32( _maskreg_, _mask_ );                                  \
    }                                                                           \
CYG_MACRO_END

#define HAL_INTERRUPT_ACKNOWLEDGE( _vector_ )                           \
CYG_MACRO_START                                                         \
    CYG_WORD32 _srvector_ = _vector_;                                   \
    if( _vector_ > CYGNUM_HAL_INTERRUPT_COMPARE )                       \
    {                                                                   \
        CYG_WORD32 _stat_;                                              \
        CYG_BYTE _shift_;                                               \
        HAL_IO_REGISTER _statreg_ = CYGHWR_HAL_MIPS_VRC4372_INTC_STAT0 +\
            cyg_hal_interrupt_level[_vector_] *                         \
            CYGHWR_HAL_MIPS_VRC4372_INTC_MASK_OFF;                      \
        HAL_READ_UINT32( _statreg_, _stat_ );                           \
        _shift_ = _vector_-CYGNUM_HAL_INTERRUPT_REALTIME_A;             \
        _stat_ &= ~(1<<_shift_);                                        \
        HAL_WRITE_UINT32( _statreg_, _stat_ );                          \
        _srvector_ = cyg_hal_interrupt_level[_vector_] +                \
            CYGNUM_HAL_INTERRUPT_IPL0;                                  \
    }                                                                   \
    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"(_srvector_)                                               \
        : "$2", "$3"                                                    \
        );                                                              \
CYG_MACRO_END

#define HAL_INTERRUPT_CONFIGURE( _vector_, _level_, _up_ )                      \
CYG_MACRO_START                                                                 \
    if( (_vector_ >= CYGNUM_HAL_INTERRUPT_REALTIME_A) &&                        \
        (_vector_ <= CYGNUM_HAL_INTERRUPT_INT_13))                              \
    {                                                                           \
        CYG_WORD32 mask = 1<<(_vector_-CYGNUM_HAL_INTERRUPT_REALTIME_A);        \
        CYG_WORD32 pol;                                                         \
        CYG_WORD32 trig;                                                        \
        HAL_READ_UINT32( CYGHWR_HAL_MIPS_VRC4372_INTC_POL, pol );               \
        HAL_READ_UINT32( CYGHWR_HAL_MIPS_VRC4372_INTC_TRIG, trig );             \
        if( _level_ )                                                           \
        {                                                                       \
            pol &= ~mask;                                                       \
            if( _up_ ) trig |= mask;                                            \
            else trig &= ~mask;                                                 \
        }                                                                       \
        else                                                                    \
        {                                                                       \
            pol |= mask;                                                        \
            if( !(_up_) ) trig |= mask;                                         \
            else trig &= ~mask;                                                 \
        }                                                                       \
        HAL_WRITE_UINT32( CYGHWR_HAL_MIPS_VRC4372_INTC_POL, pol );              \
        HAL_WRITE_UINT32( CYGHWR_HAL_MIPS_VRC4372_INTC_TRIG, trig );            \
    }                                                                           \
CYG_MACRO_END

#define HAL_INTERRUPT_SET_LEVEL( _vector_, _level_ )    \
CYG_MACRO_START                                         \
    if( _vector_ > CYGNUM_HAL_INTERRUPT_COMPARE )       \
    {                                                   \
        cyg_uint32 _ilevel_ = _level_;                  \
        while( _ilevel_ > 2 ) _ilevel_ -= 2;            \
        cyg_hal_interrupt_level[_vector_] = _ilevel_;   \
    }                                                   \
CYG_MACRO_END

#define CYGHWR_HAL_INTERRUPT_CONTROLLER_ACCESS_DEFINED

//--------------------------------------------------------------------------
// Control-C support.

#if defined(CYGDBG_HAL_MIPS_DEBUG_GDB_CTRLC_SUPPORT)

# define CYGHWR_HAL_GDB_PORT_VECTOR CYGNUM_HAL_INTERRUPT_DUART

externC cyg_uint32 hal_ctrlc_isr(CYG_ADDRWORD vector, CYG_ADDRWORD data);

#define HAL_CTRLC_ISR hal_ctrlc_isr

#endif

//----------------------------------------------------------------------------
// Reset.

#define HAL_PLATFORM_RESET()            CYG_EMPTY_STATEMENT

#define HAL_PLATFORM_RESET_ENTRY        0xbfc00000

//--------------------------------------------------------------------------
#endif // ifndef CYGONCE_HAL_PLF_INTR_H
// End of plf_intr.h