Intel(R) IQ80315 I/O Processor DMA and XOR Library APIs and ...

Intel ® GW80314 I/O Processor DMA and XOR LibraryLibrary Function PrototypesE.3 Functions Included in chain_interrupt.h andchain_interrupt.cE.3.1void intHandlerDetach(void)ItemPrototypeInputOutputPurposeOperationvoid intHandlerDetach(void);NoneNoneDescriptionTo remove lib_fiq_handler and lib_fiq_handler handlers from chain. Returns state of interruptvectors to pre-callintHandlerAttach() state.Restore pre-callintHandlerAttach() vector values.E.3.2void callintHandlerAttach(void)ItemPrototypeInputOutputPurposeOperationDescriptionvoid callintHandlerAttach(void);NoneNoneChains in lib_fiq_handler and lib_irq_handler to interrupt vectors.Calls function intHandlerAttach(lib_irq_handler,lib_fiq_handler).E.3.3void intHandlerAttach(void (*irq)(void),void (*fiq)(void))ItemPrototypeInputOutputPurposeOperationDescriptionvoid intHandlerAttach(void (*irq)(void),void (*fiq)(void));irq: irq handler to be chained into interrupt vectorfiq: fiq handler to be chained into interrupt vectorNoneTo chain functions into interrupt vectors.• Get location pointed to by interrupt vectors• Save contents at location to global variable used to restore state• Record address of function being chained in• Function chained in jump to prior vector it interrupt is not XOR or DMA related.APIs and Testbench White Paper 77