static void sigterm(int sig) { TraceExit("Signal %d received. Exiting...\n",sig); }
NTSTATUS RegistersCreate( _In_ WDFDEVICE Device, _In_ PCM_PARTIAL_RESOURCE_DESCRIPTOR RegistersResource ) /*++ Routine Description: Helper function to map the memory resources to the HW registers. Arguments: Device - Wdf device object corresponding to the FDO RegisterResource - Raw resource for the memory Return Value: Appropriate NTSTATUS value --*/ { NTSTATUS Status; PREGISTERS_CONTEXT Context; WDF_OBJECT_ATTRIBUTES Attributes; TraceEntry(); PAGED_CODE(); WDF_OBJECT_ATTRIBUTES_INIT_CONTEXT_TYPE(&Attributes, REGISTERS_CONTEXT); Status = WdfObjectAllocateContext(Device, &Attributes, &Context); if (Status == STATUS_OBJECT_NAME_EXISTS) { // // In the case of a resource rebalance, the context allocated // previously still exists. // Status = STATUS_SUCCESS; RtlZeroMemory(Context, sizeof(*Context)); } CHK_NT_MSG(Status, "Failed to allocate context for registers"); Context->RegisterBase = MmMapIoSpaceEx( RegistersResource->u.Memory.Start, RegistersResource->u.Memory.Length, PAGE_NOCACHE | PAGE_READWRITE); if (Context->RegisterBase == NULL) { Status = STATUS_INSUFFICIENT_RESOURCES; CHK_NT_MSG(Status, "MmMapIoSpaceEx failed"); } Context->RegistersLength = RegistersResource->u.Memory.Length; End: TraceExit(); return Status; }