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/** Delivery modes. */

#define DELMOD_FIXED    0x0

#define DELMOD_LOWPRI   0x1

#define DELMOD_SMI  0x2

/* 0x3 reserved */

#define DELMOD_NMI  0x4

#define DELMOD_INIT 0x5

/* 0x6 reserved */

#define DELMOD_EXTINT   0x7

/** Destination modes. */

#define DESTMOD_PHYS    0x0

#define DESTMOD_LOGIC   0x1

/** Trigger Modes. */

#define TRIGMOD_EDGE    0x0

#define TRIGMOD_LEVEL   0x1

/** Interrupt Input Pin Polarities. */

#define POLARITY_HIGH   0x0

#define POLARITY_LOW    0x1

/** I/O Redirection Register. */

struct io_redirection_reg {

    union {

        __u32 lo;

        struct {

            unsigned intvec : 8;        /**< Interrupt Vector. */

            unsigned delmod : 3;        /**< Delivery Mode. */

            unsigned destmod : 1;       /**< Destination mode. */

            unsigned delivs : 1;        /**< Delivery status (RO). */

            unsigned intpol : 1;        /**< Interrupt Input Pin Polarity. */

            unsigned irr : 1;       /**< Remote IRR (RO). */

            unsigned trigger_mode : 1;  /**< Trigger Mode. */

            unsigned masked : 1;        /**< Interrupt Mask. */

            unsigned : 15;          /**< Reserved. */

        };

    };

    union {

        __u32 hi;

        struct {

            unsigned : 24;          /**< Reserved. */

            unsigned dest : 8;      /**< Destination Field. */

        };

    };

} __attribute__ ((packed));

typedef struct io_redirection_reg io_redirection_reg_t;