HalAllocateAdapterChannel HalAllocateCommonBuffer HalAllocateCrashDumpRegisters HalFlushCommonBuffer HalFreeCommonBuffer HalGetAdapter HalGetScatterGatherList HalpCopyBufferMap HalpDmaAdapterList HalpDmaAllocateChildAdapter HalpDmaAllocateMasterAdapter HalpDmaGetDmaAlignment HalpDmaInitializeEisaAdapter HalpDmaLock HalpDmaOperations HalpEisaAdapter HalpEisaDma HalpEisaPortPage HalpGetAdapterMaximumPhysicalAddress HalpGetDmaAdapter HalpGrowMapBuffers HalpGrowMapBufferWorker HalpInitDma HalpMasterAdapter HalpScatterGatherAdapterControl HalPutDmaAdapter HalPutScatterGatherList HalReadDmaCounter IoFlushAdapterBuffers IoFreeAdapterChannel IoFreeMapRegisters IoMapTransfer MAX_MAP_REGISTERS MAX_SG_ELEMENTS NDEBUG TAG_DMA

VOID INIT_FUNCTION HalpInitDma ( VOID  ) Definition at line 132 of file dma.c. { /* * Initialize the DMA Operation table */ HalpDmaOperations.AllocateAdapterChannel = (PALLOCATE_ADAPTER_CHANNEL)IoAllocateAdapterChannel; HalpDmaOperations.FlushAdapterBuffers = (PFLUSH_ADAPTER_BUFFERS)IoFlushAdapterBuffers; HalpDmaOperations.FreeAdapterChannel = (PFREE_ADAPTER_CHANNEL)IoFreeAdapterChannel; HalpDmaOperations.FreeMapRegisters = (PFREE_MAP_REGISTERS)IoFreeMapRegisters; HalpDmaOperations.MapTransfer = (PMAP_TRANSFER)IoMapTransfer; /* * Check if Extended DMA is available. We're just going to do a random * read and write. */ WRITE_PORT_UCHAR((PUCHAR)FIELD_OFFSET(EISA_CONTROL, DmaController2Pages.Channel2), 0x2A); if (READ_PORT_UCHAR((PUCHAR)FIELD_OFFSET(EISA_CONTROL, DmaController2Pages.Channel2)) == 0x2A) { HalpEisaDma = TRUE; } /* * Intialize all the global variables and allocate master adapter with * first map buffers. */ InitializeListHead(&HalpDmaAdapterList); KeInitializeEvent(&HalpDmaLock, NotificationEvent, TRUE); HalpMasterAdapter = HalpDmaAllocateMasterAdapter(); /* * Setup the HalDispatchTable callback for creating PnP DMA adapters. It's * used by IoGetDmaAdapter in the kernel. */ HalGetDmaAdapter = HalpGetDmaAdapter; }