plf_intr.h

来自「eCos操作系统源码」· C头文件 代码 · 共 312 行 · 第 1/2 页

    {                                                                       \
        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 if ((_vector_) >= CYGNUM_HAL_INTERRUPT_CTRL2_BASE)                 \
    {                                                                       \
        cyg_uint8 _mask_;                                                   \
        cyg_uint32 _shift_ = (_vector_)-CYGNUM_HAL_INTERRUPT_CTRL2_BASE;    \
        HAL_READ_UINT8(HAL_PIIX4_SLAVE_OCW1, _mask_ );                      \
        _mask_ |= (1<<_shift_);                                             \
        HAL_WRITE_UINT8(HAL_PIIX4_SLAVE_OCW1, _mask_ );                     \
    }                                                                       \
    else /* CTRL1 */                                                        \
    {                                                                       \
        cyg_uint8 _mask_;                                                   \
        cyg_uint32 _shift_ = (_vector_)-CYGNUM_HAL_INTERRUPT_CTRL1_BASE;    \
        HAL_READ_UINT8(HAL_PIIX4_MASTER_OCW1, _mask_ );                     \
        _mask_ |= (1<<_shift_);                                             \
        HAL_WRITE_UINT8(HAL_PIIX4_MASTER_OCW1, _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 if ((_vector_) >= CYGNUM_HAL_INTERRUPT_CTRL2_BASE)                 \
    {                                                                       \
        cyg_uint8 _mask_;                                                   \
        cyg_uint32 _shift_ = (_vector_)-CYGNUM_HAL_INTERRUPT_CTRL2_BASE;    \
        HAL_READ_UINT8(HAL_PIIX4_SLAVE_OCW1, _mask_ );                      \
        _mask_ &= ~(1<<_shift_);                                            \
        HAL_WRITE_UINT8(HAL_PIIX4_SLAVE_OCW1, _mask_ );                     \
    }                                                                       \
    else /* CTRL1 */                                                        \
    {                                                                       \
        cyg_uint8 _mask_;                                                   \
        cyg_uint32 _shift_ = (_vector_)-CYGNUM_HAL_INTERRUPT_CTRL1_BASE;    \
        HAL_READ_UINT8(HAL_PIIX4_MASTER_OCW1, _mask_ );                     \
        _mask_ &= ~(1<<_shift_);                                            \
        HAL_WRITE_UINT8(HAL_PIIX4_MASTER_OCW1, _mask_ );                    \
    }                                                                       \
    CYG_MACRO_END

#define HAL_INTERRUPT_ACKNOWLEDGE( _vector_ )                   \
    CYG_MACRO_START                                             \
    cyg_uint32 _srvector_ = _vector_;                           \
    if ((_vector_) >= CYGNUM_HAL_INTERRUPT_CTRL2_BASE)          \
    {                                                           \
        HAL_WRITE_UINT8(HAL_PIIX4_SLAVE_OCW3, 0x20 );           \
    }                                                           \
    if ((_vector_) >= CYGNUM_HAL_INTERRUPT_CTRL1_BASE)          \
    {                                                           \
        HAL_WRITE_UINT8(HAL_PIIX4_MASTER_OCW3, 0x20 );          \
    }                                                           \
    if ((_vector_) >= CYGNUM_HAL_INTERRUPT_EXTERNAL_BASE) {     \
        _srvector_ = CYGNUM_HAL_INTERRUPT_SOUTH_BRIDGE_INTR;    \
    }                                                           \
    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_CTRL2_BASE)                      \
    {                                                                       \
        cyg_uint8 _mask_;                                                   \
        cyg_uint32 _shift_ = (_vector_)-CYGNUM_HAL_INTERRUPT_CTRL2_BASE;    \
        HAL_READ_UINT8(HAL_PIIX4_ELCR2, _mask_ );                           \
        _mask_ &= ~(1<<_shift_);                                            \
        if (_level_) _mask_ |= (1<<_shift_);                                \
        _mask_ &= HAL_PIIX4_ELCR2_MASK;                                     \
        HAL_WRITE_UINT8(HAL_PIIX4_ELCR2, _mask_ );                          \
    }                                                                       \
    else if ((_vector_) >= CYGNUM_HAL_INTERRUPT_CTRL1_BASE)                 \
    {                                                                       \
        cyg_uint8 _mask_;                                                   \
        cyg_uint32 _shift_ = (_vector_)-CYGNUM_HAL_INTERRUPT_CTRL1_BASE;    \
        HAL_READ_UINT8(HAL_PIIX4_ELCR1, _mask_ );                           \
        _mask_ &= ~(1<<_shift_);                                            \
        if (_level_) _mask_ |= (1<<_shift_);                                \
        _mask_ &= HAL_PIIX4_ELCR1_MASK;                                     \
        HAL_WRITE_UINT8(HAL_PIIX4_ELCR1, _mask_ );                          \
    }                                                                       \
    CYG_MACRO_END

#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_malta_reset( void );
#define CYGHWR_HAL_RESET_DEFINED
#define HAL_PLATFORM_RESET()             hal_malta_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