IGU_ACK_REGISTER_INTERRUPT_MODE
#define IGU_ACK_REGISTER_INTERRUPT_MODE (0x3<<9) /* BitField sb_id_and_flags interrupt enable/disable/nop: use IGU_INT_xxx constants */
#define IGU_ACK_REGISTER_INTERRUPT_MODE (0x3<<9) /* BitField sb_id_and_flags interrupt enable/disable/nop: use IGU_INT_xxx constants */