\r
HARDWARE_INTERRUPT_HANDLER *gRegisteredInterruptHandlers = NULL;\r
\r
+/**\r
+ Register Handler for the specified interrupt source.\r
+\r
+ @param This Instance pointer for this protocol\r
+ @param Source Hardware source of the interrupt\r
+ @param Handler Callback for interrupt. NULL to unregister\r
+\r
+ @retval EFI_SUCCESS Source was updated to support Handler.\r
+ @retval EFI_DEVICE_ERROR Hardware could not be programmed.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+RegisterInterruptSource (\r
+ IN EFI_HARDWARE_INTERRUPT_PROTOCOL *This,\r
+ IN HARDWARE_INTERRUPT_SOURCE Source,\r
+ IN HARDWARE_INTERRUPT_HANDLER Handler\r
+ )\r
+{\r
+ if (Source > mGicNumInterrupts) {\r
+ ASSERT(FALSE);\r
+ return EFI_UNSUPPORTED;\r
+ }\r
+\r
+ if ((Handler == NULL) && (gRegisteredInterruptHandlers[Source] == NULL)) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ if ((Handler != NULL) && (gRegisteredInterruptHandlers[Source] != NULL)) {\r
+ return EFI_ALREADY_STARTED;\r
+ }\r
+\r
+ gRegisteredInterruptHandlers[Source] = Handler;\r
+\r
+ // If the interrupt handler is unregistered then disable the interrupt\r
+ if (NULL == Handler){\r
+ return This->DisableInterruptSource (This, Source);\r
+ } else {\r
+ return This->EnableInterruptSource (This, Source);\r
+ }\r
+}\r
+\r
EFI_STATUS\r
InstallAndRegisterInterruptService (\r
IN EFI_HARDWARE_INTERRUPT_PROTOCOL *InterruptProtocol,\r