335 lines
9.2 KiB
C
335 lines
9.2 KiB
C
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/*++
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Copyright (c) 1990-1995 Microsoft Corporation
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Module Name:
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config.c
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Abstract:
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NDIS wrapper functions for full mac drivers configuration/initialization
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Author:
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Sean Selitrennikoff (SeanSe) 05-Oct-93
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Jameel Hyder (JameelH) 01-Jun-95 Re-organization/optimization
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Environment:
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Kernel mode, FSD
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Revision History:
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--*/
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#include <precomp.h>
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#include <stdarg.h>
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//
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// Define the module number for debug code.
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//
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#define MODULE_NUMBER MODULE_CONFIG
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//
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// Requests Used by MAC Drivers
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//
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//
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VOID
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NdisInitializeWrapper(
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OUT PNDIS_HANDLE NdisWrapperHandle,
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IN PVOID SystemSpecific1,
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IN PVOID SystemSpecific2,
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IN PVOID SystemSpecific3
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)
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/*++
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Routine Description:
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Called at the beginning of every MAC's initialization routine.
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Arguments:
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NdisWrapperHandle - A MAC specific handle for the wrapper.
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SystemSpecific1, a pointer to the driver object for the MAC.
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SystemSpecific2, a PUNICODE_STRING containing the location of
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the registry subtree for this driver.
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SystemSpecific3, unused on NT.
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Return Value:
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None.
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--*/
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{
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NDIS_STATUS Status;
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PNDIS_WRAPPER_HANDLE WrapperHandle;
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ULONG cbSize;
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UNREFERENCED_PARAMETER (SystemSpecific3);
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#if TRACK_UNLOAD
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DbgPrint("NdisInitializeWrapper: DriverObject %p\n",SystemSpecific1);
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#endif
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DBGPRINT_RAW(DBG_COMP_INIT, DBG_LEVEL_INFO,
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("==>NdisInitializeWrapper\n"));
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*NdisWrapperHandle = NULL;
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cbSize = sizeof(NDIS_WRAPPER_HANDLE) + ((PUNICODE_STRING)SystemSpecific2)->Length + sizeof(WCHAR);
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WrapperHandle = (PNDIS_WRAPPER_HANDLE)ALLOC_FROM_POOL(cbSize, NDIS_TAG_WRAPPER_HANDLE);
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if (WrapperHandle != NULL)
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{
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*NdisWrapperHandle = WrapperHandle;
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NdisZeroMemory(WrapperHandle, cbSize);
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WrapperHandle->DriverObject = (PDRIVER_OBJECT)SystemSpecific1;
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WrapperHandle->ServiceRegPath.Buffer = (PWSTR)((PUCHAR)WrapperHandle + sizeof(NDIS_WRAPPER_HANDLE));
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WrapperHandle->ServiceRegPath.Length = ((PUNICODE_STRING)SystemSpecific2)->Length;
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WrapperHandle->ServiceRegPath.MaximumLength = WrapperHandle->ServiceRegPath.Length + sizeof(WCHAR);
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NdisMoveMemory(WrapperHandle->ServiceRegPath.Buffer,
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((PUNICODE_STRING)SystemSpecific2)->Buffer,
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WrapperHandle->ServiceRegPath.Length);
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}
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DBGPRINT_RAW(DBG_COMP_INIT, DBG_LEVEL_INFO,
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("<==NdisInitializeWrapper\n"));
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}
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VOID
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NdisTerminateWrapper(
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IN NDIS_HANDLE NdisWrapperHandle,
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IN PVOID SystemSpecific
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)
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/*++
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Routine Description:
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Called at the end of every MAC's termination routine.
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Arguments:
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NdisWrapperHandle - The handle returned from NdisInitializeWrapper.
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SystemSpecific - No defined value.
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Return Value:
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None.
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--*/
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{
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PNDIS_WRAPPER_HANDLE WrapperHandle = (PNDIS_WRAPPER_HANDLE)NdisWrapperHandle;
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PNDIS_M_DRIVER_BLOCK MiniBlock;
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#if TRACK_UNLOAD
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DbgPrint("NdisTerminateWrapper: WrapperHandle %p\n",WrapperHandle);
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#endif
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DBGPRINT_RAW(DBG_COMP_INIT, DBG_LEVEL_INFO,
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("==>NdisTerminateWrapper: NdisWrapperHandle %p\n", NdisWrapperHandle));
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UNREFERENCED_PARAMETER(SystemSpecific);
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if ((WrapperHandle != NULL) && (WrapperHandle->DriverObject != NULL))
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{
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#if TRACK_UNLOAD
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DbgPrint("NdisTerminateWrapper: DriverObject %p\n",WrapperHandle->DriverObject);
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#endif
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MiniBlock = (PNDIS_M_DRIVER_BLOCK)IoGetDriverObjectExtension(WrapperHandle->DriverObject,
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(PVOID)NDIS_PNP_MINIPORT_DRIVER_ID);
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if (MiniBlock != NULL)
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{
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#if TRACK_UNLOAD
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DbgPrint("NdisTerminateWrapper: MiniBlock %p\n",MiniBlock);
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#endif
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MiniBlock->Flags |= fMINIBLOCK_RECEIVED_TERMINATE_WRAPPER;
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//
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// Miniports should not be terminating the wrapper unless they are failing DriverEntry
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//
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if ((MiniBlock->MiniportQueue != NULL) || (MiniBlock->Flags & fMINIBLOCK_UNLOADING))
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{
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DBGPRINT_RAW(DBG_COMP_INIT, DBG_LEVEL_INFO,
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("<==NdisTerminateWrapper\n"));
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return;
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}
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DBGPRINT_RAW(DBG_COMP_INIT, DBG_LEVEL_INFO,
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("NdisTerminateWrapper: MiniBlock %p\n", MiniBlock));
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//
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// if the driver is going to fail DriverEntry, we expect it to have enough sense
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// to undo what it is done so far and not to wait for UnloadHandler
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//
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MiniBlock->UnloadHandler = NULL;
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MiniBlock->Flags |= fMINIBLOCK_TERMINATE_WRAPPER_UNLOAD;
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//
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// call unload entry point since PnP is not going to do it
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//
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ndisMUnload(WrapperHandle->DriverObject);
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}
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else
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{
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FREE_POOL(WrapperHandle);
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}
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}
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DBGPRINT_RAW(DBG_COMP_INIT, DBG_LEVEL_INFO,
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("<==NdisTerminateWrapper\n"));
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}
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VOID
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NdisSetupDmaTransfer(
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OUT PNDIS_STATUS Status,
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IN NDIS_HANDLE NdisDmaHandle,
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IN PNDIS_BUFFER Buffer,
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IN ULONG Offset,
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IN ULONG Length,
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IN BOOLEAN WriteToDevice
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)
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/*++
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Routine Description:
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Sets up the host DMA controller for a DMA transfer. The
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DMA controller is set up to transfer the specified MDL.
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Since we register all DMA channels as non-scatter/gather,
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IoMapTransfer will ensure that the entire MDL is
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in a single logical piece for transfer.
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Arguments:
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Status - Returns the status of the request.
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NdisDmaHandle - Handle returned by NdisAllocateDmaChannel.
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Buffer - An NDIS_BUFFER which describes the host memory involved in the
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transfer.
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Offset - An offset within buffer where the transfer should
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start.
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Length - The length of the transfer. VirtualAddress plus Length must not
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extend beyond the end of the buffer.
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WriteToDevice - TRUE for a download operation (host to adapter); FALSE
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for an upload operation (adapter to host).
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Return Value:
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None.
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--*/
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{
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PNDIS_DMA_BLOCK DmaBlock = (PNDIS_DMA_BLOCK)NdisDmaHandle;
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PMAP_TRANSFER mapTransfer = *((PDMA_ADAPTER)DmaBlock->SystemAdapterObject)->DmaOperations->MapTransfer;
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PFLUSH_ADAPTER_BUFFERS flushAdapterBuffers = *((PDMA_ADAPTER)DmaBlock->SystemAdapterObject)->DmaOperations->FlushAdapterBuffers;
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ULONG LengthMapped;
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//
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// Make sure another request is not in progress.
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//
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if (DmaBlock->InProgress)
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{
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*Status = NDIS_STATUS_RESOURCES;
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return;
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}
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DmaBlock->InProgress = TRUE;
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//
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// Use IoMapTransfer to set up the transfer.
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//
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LengthMapped = Length;
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mapTransfer(DmaBlock->SystemAdapterObject,
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(PMDL)Buffer,
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DmaBlock->MapRegisterBase,
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(PUCHAR)(MDL_VA(Buffer)) + Offset,
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&LengthMapped,
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WriteToDevice);
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if (LengthMapped != Length)
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{
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//
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// Somehow the request could not be mapped competely,
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// this should not happen for a non-scatter/gather adapter.
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//
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flushAdapterBuffers(DmaBlock->SystemAdapterObject,
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(PMDL)Buffer,
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DmaBlock->MapRegisterBase,
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(PUCHAR)(MDL_VA(Buffer)) + Offset,
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LengthMapped,
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WriteToDevice);
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DmaBlock->InProgress = FALSE;
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*Status = NDIS_STATUS_RESOURCES;
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}
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else *Status = NDIS_STATUS_SUCCESS;
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}
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VOID
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NdisCompleteDmaTransfer(
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OUT PNDIS_STATUS Status,
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IN NDIS_HANDLE NdisDmaHandle,
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IN PNDIS_BUFFER Buffer,
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IN ULONG Offset,
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IN ULONG Length,
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IN BOOLEAN WriteToDevice
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)
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/*++
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Routine Description:
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Completes a previously started DMA transfer.
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Arguments:
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Status - Returns the status of the transfer.
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NdisDmaHandle - Handle returned by NdisAllocateDmaChannel.
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Buffer - An NDIS_BUFFER which was passed to NdisSetupDmaTransfer.
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Offset - the offset passed to NdisSetupDmaTransfer.
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Length - The length passed to NdisSetupDmaTransfer.
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WriteToDevice - TRUE for a download operation (host to adapter); FALSE
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for an upload operation (adapter to host).
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Return Value:
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None.
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--*/
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{
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PNDIS_DMA_BLOCK DmaBlock = (PNDIS_DMA_BLOCK)NdisDmaHandle;
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PFLUSH_ADAPTER_BUFFERS flushAdapterBuffers = *((PDMA_ADAPTER)DmaBlock->SystemAdapterObject)->DmaOperations->FlushAdapterBuffers;
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BOOLEAN Successful;
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Successful = flushAdapterBuffers(DmaBlock->SystemAdapterObject,
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(PMDL)Buffer,
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DmaBlock->MapRegisterBase,
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(PUCHAR)(MDL_VA(Buffer)) + Offset,
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Length,
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WriteToDevice);
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*Status = (Successful ? NDIS_STATUS_SUCCESS : NDIS_STATUS_RESOURCES);
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DmaBlock->InProgress = FALSE;
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}
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#pragma hdrstop
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