+++ /dev/null
-/*
- * COPYRIGHT: See COPYING in the top level directory
- * PROJECT: ReactOS Kernel Streaming
- * FILE: drivers/wdm/audio/backpln/portcls/dma_init.c
- * PURPOSE: portcls dma support object
- * PROGRAMMER: Johannes Anderwald
- */
-
-#include "private.hpp"
-
-#ifndef YDEBUG
-#define NDEBUG
-#endif
-
-#include <debug.h>
-
-class CDmaChannelInit : public IDmaChannelInit
-{
-public:
- STDMETHODIMP QueryInterface( REFIID InterfaceId, PVOID* Interface);
-
- STDMETHODIMP_(ULONG) AddRef()
- {
- InterlockedIncrement(&m_Ref);
- return m_Ref;
- }
- STDMETHODIMP_(ULONG) Release()
- {
- InterlockedDecrement(&m_Ref);
-
- if (!m_Ref)
- {
- delete this;
- return 0;
- }
- return m_Ref;
- }
- IMP_IDmaChannelInit;
- CDmaChannelInit(IUnknown * OuterUnknown){}
- virtual ~CDmaChannelInit(){}
-
-protected:
-
- PDEVICE_OBJECT m_pDeviceObject;
- PDMA_ADAPTER m_pAdapter;
-
- BOOL m_DmaStarted;
-
- ULONG m_MapSize;
- PVOID m_MapRegisterBase;
-
- ULONG m_LastTransferCount;
-
- ULONG m_MaximumBufferSize;
- ULONG m_MaxMapRegisters;
- ULONG m_AllocatedBufferSize;
- ULONG m_BufferSize;
-
- PHYSICAL_ADDRESS m_Address;
- PVOID m_Buffer;
- PMDL m_Mdl;
- BOOLEAN m_WriteToDevice;
-
- friend IO_ALLOCATION_ACTION NTAPI AdapterControl(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp, IN PVOID MapRegisterBase, IN PVOID Context);
-
- LONG m_Ref;
-};
-
-
-
-//---------------------------------------------------------------
-// IUnknown methods
-//
-
-extern GUID IID_IDmaChannelSlave;
-
-NTSTATUS
-NTAPI
-CDmaChannelInit::QueryInterface(
- IN REFIID refiid,
- OUT PVOID* Output)
-{
- if (IsEqualGUIDAligned(refiid, IID_IUnknown) ||
- IsEqualGUIDAligned(refiid, IID_IDmaChannel))
- //IsEqualGUIDAligned(refiid, IID_IDmaChannelSlave)) // HACK
- {
- *Output = PVOID(PUNKNOWN(this));
- PUNKNOWN(*Output)->AddRef();
- return STATUS_SUCCESS;
- }
- DPRINT("No interface!!!\n");
- return STATUS_UNSUCCESSFUL;
-}
-
-//---------------------------------------------------------------
-// IDmaChannel methods
-//
-
-NTSTATUS
-NTAPI
-CDmaChannelInit::AllocateBuffer(
- IN ULONG BufferSize,
- IN PPHYSICAL_ADDRESS PhysicalAddressConstraint OPTIONAL)
-{
- PC_ASSERT_IRQL_EQUAL(PASSIVE_LEVEL);
-
- // Did the caller already allocate a buffer ?*/
- if (m_Buffer)
- {
- DPRINT("CDmaChannelInit_AllocateBuffer free common buffer first \n");
- return STATUS_UNSUCCESSFUL;
- }
-
- m_Buffer = m_pAdapter->DmaOperations->AllocateCommonBuffer(m_pAdapter, BufferSize, &m_Address, FALSE);
- if (!m_Buffer)
- {
- DPRINT("CDmaChannelInit_AllocateBuffer fAllocateCommonBuffer failed \n");
- return STATUS_UNSUCCESSFUL;
- }
-
- m_BufferSize = BufferSize;
- m_AllocatedBufferSize = BufferSize;
- DPRINT("CDmaChannelInit::AllocateBuffer Success Buffer %p BufferSize %u Address %x\n", m_Buffer, BufferSize, m_Address);
-
- return STATUS_SUCCESS;
-}
-
-ULONG
-NTAPI
-CDmaChannelInit::AllocatedBufferSize()
-{
- DPRINT("CDmaChannelInit_AllocatedBufferSize: this %p BufferSize %u\n", this, m_BufferSize);
- return m_AllocatedBufferSize;
-}
-
-VOID
-NTAPI
-CDmaChannelInit::CopyFrom(
- IN PVOID Destination,
- IN PVOID Source,
- IN ULONG ByteCount
- )
-{
- DPRINT("CDmaChannelInit_CopyFrom: this %p Destination %p Source %p ByteCount %u\n", this, Destination, Source, ByteCount);
-
- CopyTo(Destination, Source, ByteCount);
-}
-
-VOID
-NTAPI
-CDmaChannelInit::CopyTo(
- IN PVOID Destination,
- IN PVOID Source,
- IN ULONG ByteCount
- )
-{
- DPRINT("CDmaChannelInit_CopyTo: this %p Destination %p Source %p ByteCount %u\n", this, Destination, Source, ByteCount);
- RtlCopyMemory(Destination, Source, ByteCount);
-}
-
-VOID
-NTAPI
-CDmaChannelInit::FreeBuffer()
-{
- DPRINT("CDmaChannelInit_FreeBuffer: this %p\n", this);
-
- PC_ASSERT_IRQL_EQUAL(PASSIVE_LEVEL);
-
- if (!m_Buffer)
- {
- DPRINT("CDmaChannelInit_FreeBuffer allocate common buffer first \n");
- return;
- }
-
- m_pAdapter->DmaOperations->FreeCommonBuffer(m_pAdapter, m_AllocatedBufferSize, m_Address, m_Buffer, FALSE);
- m_Buffer = NULL;
- m_AllocatedBufferSize = 0;
- m_Address.QuadPart = 0LL;
-
- if (m_Mdl)
- {
- IoFreeMdl(m_Mdl);
- m_Mdl = NULL;
- }
-}
-
-PADAPTER_OBJECT
-NTAPI
-CDmaChannelInit::GetAdapterObject()
-{
- DPRINT("CDmaChannelInit_GetAdapterObject: this %p\n", this);
- return (PADAPTER_OBJECT)m_pAdapter;
-}
-
-ULONG
-NTAPI
-CDmaChannelInit::MaximumBufferSize()
-{
- DPRINT("CDmaChannelInit_MaximumBufferSize: this %p\n", this);
- return m_MaximumBufferSize;
-}
-
-#ifdef _MSC_VER
-
-PHYSICAL_ADDRESS
-NTAPI
-CDmaChannelInit::PhysicalAddress()
-{
- DPRINT("CDmaChannelInit_PhysicalAddress: this %p Virtual %p Physical High %x Low %x%\n", this, m_Buffer, m_Address.HighPart, m_Address.LowPart);
-
- return m_Address;
-}
-
-#else
-
-PHYSICAL_ADDRESS
-NTAPI
-CDmaChannelInit::PhysicalAddress(
- PPHYSICAL_ADDRESS Address)
-{
- DPRINT("CDmaChannelInit_PhysicalAddress: this %p Virtual %p Physical High %x Low %x%\n", this, m_Buffer, m_Address.HighPart, m_Address.LowPart);
-
- PHYSICAL_ADDRESS Result;
-
- Address->QuadPart = m_Address.QuadPart;
- Result.QuadPart = (ULONG_PTR)Address;
- return Result;
-}
-
-
-#endif
-
-VOID
-NTAPI
-CDmaChannelInit::SetBufferSize(
- IN ULONG BufferSize)
-{
- DPRINT("CDmaChannelInit_SetBufferSize: this %p\n", this);
- m_BufferSize = BufferSize;
-
-}
-
-ULONG
-NTAPI
-CDmaChannelInit::BufferSize()
-{
- DPRINT("BufferSize %u\n", m_BufferSize);
- PC_ASSERT(m_BufferSize);
- return m_BufferSize;
-}
-
-
-PVOID
-NTAPI
-CDmaChannelInit::SystemAddress()
-{
- DPRINT("CDmaChannelInit_SystemAddress: this %p\n", this);
- return m_Buffer;
-}
-
-ULONG
-NTAPI
-CDmaChannelInit::TransferCount()
-{
- DPRINT("CDmaChannelInit_TransferCount: this %p\n", this);
- return m_LastTransferCount;
-}
-
-ULONG
-NTAPI
-CDmaChannelInit::ReadCounter()
-{
- ULONG Counter;
-
- PC_ASSERT_IRQL(DISPATCH_LEVEL);
-
- Counter = m_pAdapter->DmaOperations->ReadDmaCounter(m_pAdapter);
-
- if (!m_DmaStarted || Counter >= m_LastTransferCount)
- Counter = 0;
-
- DPRINT("ReadCounter %u\n", Counter);
-
- return Counter;
-}
-
-IO_ALLOCATION_ACTION
-NTAPI
-AdapterControl(
- IN PDEVICE_OBJECT DeviceObject,
- IN PIRP Irp,
- IN PVOID MapRegisterBase,
- IN PVOID Context)
-{
- ULONG Length;
- CDmaChannelInit * This = (CDmaChannelInit*)Context;
-
- Length = This->m_MapSize;
- This->m_MapRegisterBase = MapRegisterBase;
-
- This->m_pAdapter->DmaOperations->MapTransfer(This->m_pAdapter,
- This->m_Mdl,
- MapRegisterBase,
- (PVOID)((ULONG_PTR)This->m_Mdl->StartVa + This->m_Mdl->ByteOffset),
- &Length,
- This->m_WriteToDevice);
-
- if (Length == This->m_BufferSize)
- {
- This->m_DmaStarted = TRUE;
- }
-
- return KeepObject;
-}
-
-NTSTATUS
-NTAPI
-CDmaChannelInit::Start(
- ULONG MapSize,
- BOOLEAN WriteToDevice)
-{
- NTSTATUS Status;
- ULONG MapRegisters;
- KIRQL OldIrql;
-
- DPRINT("CDmaChannelInit_Start: this %p\n", this);
-
- PC_ASSERT_IRQL_EQUAL(PASSIVE_LEVEL);
-
- if (m_DmaStarted)
- return STATUS_UNSUCCESSFUL;
-
- if (!m_Mdl)
- {
- m_Mdl = IoAllocateMdl(m_Buffer, m_MaximumBufferSize, FALSE, FALSE, NULL);
- if (!m_Mdl)
- {
- return STATUS_INSUFFICIENT_RESOURCES;
- }
- MmBuildMdlForNonPagedPool(m_Mdl);
- }
-
- m_MapSize = MapSize;
- m_WriteToDevice = WriteToDevice;
- m_LastTransferCount = MapSize;
-
- //FIXME
- // synchronize access
- //
- KeRaiseIrql(DISPATCH_LEVEL, &OldIrql);
-
- MapRegisters = ADDRESS_AND_SIZE_TO_SPAN_PAGES(m_Buffer, MapSize);
- Status = m_pAdapter->DmaOperations->AllocateAdapterChannel(m_pAdapter, m_pDeviceObject, MapRegisters, AdapterControl, (PVOID)this);
- KeLowerIrql(OldIrql);
-
- if(!NT_SUCCESS(Status))
- m_LastTransferCount = 0;
-
- return Status;
-}
-
-NTSTATUS
-NTAPI
-CDmaChannelInit::Stop()
-{
- KIRQL OldIrql;
-
- DPRINT("CDmaChannelInit::Stop: this %p\n", this);
- PC_ASSERT_IRQL(DISPATCH_LEVEL);
-
- if (!m_DmaStarted)
- return STATUS_SUCCESS;
-
- m_pAdapter->DmaOperations->FlushAdapterBuffers(m_pAdapter,
- m_Mdl,
- m_MapRegisterBase,
- (PVOID)((ULONG_PTR)m_Mdl->StartVa + m_Mdl->ByteOffset),
- m_MapSize,
- m_WriteToDevice);
-
- KeRaiseIrql(DISPATCH_LEVEL, &OldIrql);
-
- m_pAdapter->DmaOperations->FreeAdapterChannel(m_pAdapter);
-
- KeLowerIrql(OldIrql);
-
- m_DmaStarted = FALSE;
-
- IoFreeMdl(m_Mdl);
- m_Mdl = NULL;
-
- return STATUS_SUCCESS;
-}
-
-NTSTATUS
-NTAPI
-CDmaChannelInit::WaitForTC(
- ULONG Timeout)
-{
- ULONG RetryCount;
- ULONG BytesRemaining;
- ULONG PrevBytesRemaining;
-
- PC_ASSERT_IRQL_EQUAL(PASSIVE_LEVEL);
-
- BytesRemaining = m_pAdapter->DmaOperations->ReadDmaCounter(m_pAdapter);
- if (!BytesRemaining)
- {
- return STATUS_SUCCESS;
- }
-
- RetryCount = Timeout / 10;
- PrevBytesRemaining = 0xFFFFFFFF;
- do
- {
- BytesRemaining = m_pAdapter->DmaOperations->ReadDmaCounter(m_pAdapter);
-
- if (!BytesRemaining)
- break;
-
- if (PrevBytesRemaining == BytesRemaining)
- break;
-
- KeStallExecutionProcessor(10);
- PrevBytesRemaining = BytesRemaining;
-
- }while(RetryCount-- >= 1);
-
- if (BytesRemaining)
- {
- return STATUS_UNSUCCESSFUL;
- }
-
- return STATUS_SUCCESS;
-
-}
-
-NTSTATUS
-NTAPI
-CDmaChannelInit::Init(
- IN PDEVICE_DESCRIPTION DeviceDescription,
- IN PDEVICE_OBJECT DeviceObject)
-{
- INTERFACE_TYPE BusType;
- NTSTATUS Status;
- PDMA_ADAPTER Adapter;
- PPCLASS_DEVICE_EXTENSION DeviceExt;
- ULONG MapRegisters;
- ULONG ResultLength;
-
- // Get bus type
- Status = IoGetDeviceProperty(DeviceObject, DevicePropertyLegacyBusType, sizeof(BusType), (PVOID)&BusType, &ResultLength);
- if (NT_SUCCESS(Status))
- {
- DeviceDescription->InterfaceType = BusType;
- }
- // Fetch device extension
- DeviceExt = (PPCLASS_DEVICE_EXTENSION) DeviceObject->DeviceExtension;
- // Acquire dma adapter
- Adapter = IoGetDmaAdapter(DeviceExt->PhysicalDeviceObject, DeviceDescription, &MapRegisters);
- if (!Adapter)
- {
- FreeItem(this, TAG_PORTCLASS);
- return STATUS_DEVICE_CONFIGURATION_ERROR;
- }
-
- // initialize object
- m_pAdapter = Adapter;
- m_pDeviceObject = DeviceObject;
- m_MaximumBufferSize = DeviceDescription->MaximumLength;
- m_MaxMapRegisters = MapRegisters;
-
- return STATUS_SUCCESS;
-}
-
-NTSTATUS
-NTAPI
-PcNewDmaChannel(
- OUT PDMACHANNEL* OutDmaChannel,
- IN PUNKNOWN OuterUnknown OPTIONAL,
- IN POOL_TYPE PoolType,
- IN PDEVICE_DESCRIPTION DeviceDescription,
- IN PDEVICE_OBJECT DeviceObject)
-{
- NTSTATUS Status;
- CDmaChannelInit * This;
-
- DPRINT("OutDmaChannel %p OuterUnknown %p PoolType %p DeviceDescription %p DeviceObject %p\n",
- OutDmaChannel, OuterUnknown, PoolType, DeviceDescription, DeviceObject);
-
- This = new(PoolType, TAG_PORTCLASS)CDmaChannelInit(OuterUnknown);
- if (!This)
- return STATUS_INSUFFICIENT_RESOURCES;
-
- Status = This->QueryInterface(IID_IDmaChannel, (PVOID*)OutDmaChannel);
-
- if (!NT_SUCCESS(Status))
- {
- delete This;
- return Status;
- }
-
- Status = This->Init(DeviceDescription, DeviceObject);
-
- if (!NT_SUCCESS(Status))
- {
- delete This;
- return Status;
- }
-
- return Status;
-}
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