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reactos/drivers/usb/usbehci/usb_request.cpp

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/*
* PROJECT: ReactOS Universal Serial Bus Bulk Enhanced Host Controller Interface
* LICENSE: GPL - See COPYING in the top level directory
* FILE: drivers/usb/usbehci/usb_request.cpp
* PURPOSE: USB EHCI device driver.
* PROGRAMMERS:
* Michael Martin (michael.martin@reactos.org)
* Johannes Anderwald (johannes.anderwald@reactos.org)
*/
#include "usbehci.h"
#define NDEBUG
#include <debug.h>
class CUSBRequest : public IEHCIRequest
{
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;
}
// IUSBRequest interface functions
IMP_IUSBREQUEST
// IEHCI Request interface functions
IMP_IEHCIREQUEST
// local functions
ULONG InternalGetTransferType();
UCHAR InternalGetPidDirection();
NTSTATUS BuildControlTransferQueueHead(PQUEUE_HEAD * OutHead);
NTSTATUS BuildBulkInterruptTransferQueueHead(PQUEUE_HEAD * OutHead);
NTSTATUS STDMETHODCALLTYPE CreateDescriptor(PQUEUE_TRANSFER_DESCRIPTOR *OutDescriptor);
NTSTATUS CreateQueueHead(PQUEUE_HEAD *OutQueueHead);
UCHAR STDMETHODCALLTYPE GetDeviceAddress();
NTSTATUS BuildSetupPacket();
NTSTATUS BuildSetupPacketFromURB();
ULONG InternalCalculateTransferLength();
NTSTATUS STDMETHODCALLTYPE BuildTransferDescriptorChain(IN PQUEUE_HEAD QueueHead, IN PVOID TransferBuffer, IN ULONG TransferBufferLength, IN UCHAR PidCode, IN UCHAR InitialDataToggle, OUT PQUEUE_TRANSFER_DESCRIPTOR * OutFirstDescriptor, OUT PQUEUE_TRANSFER_DESCRIPTOR * OutLastDescriptor, OUT PUCHAR OutDataToggle, OUT PULONG OutTransferBufferOffset);
VOID STDMETHODCALLTYPE InitDescriptor(IN PQUEUE_TRANSFER_DESCRIPTOR CurrentDescriptor, IN PVOID TransferBuffer, IN ULONG TransferBufferLength, IN UCHAR PidCode, IN UCHAR DataToggle, OUT PULONG OutDescriptorLength);
VOID DumpQueueHead(IN PQUEUE_HEAD QueueHead);
// constructor / destructor
CUSBRequest(IUnknown *OuterUnknown);
virtual ~CUSBRequest();
protected:
LONG m_Ref;
//
// memory manager for allocating setup packet / queue head / transfer descriptors
//
PDMAMEMORYMANAGER m_DmaManager;
//
// caller provided irp packet containing URB request
//
PIRP m_Irp;
//
// transfer buffer length
//
ULONG m_TransferBufferLength;
//
// current transfer length
//
ULONG m_TransferBufferLengthCompleted;
//
// Total Transfer Length
//
ULONG m_TotalBytesTransferred;
//
// transfer buffer MDL
//
PMDL m_TransferBufferMDL;
//
// caller provided setup packet
//
PUSB_DEFAULT_PIPE_SETUP_PACKET m_SetupPacket;
//
// completion event for callers who initialized request with setup packet
//
PKEVENT m_CompletionEvent;
//
// device address for callers who initialized it with device address
//
UCHAR m_DeviceAddress;
//
// store end point address
//
PUSB_ENDPOINT m_EndpointDescriptor;
//
// DMA queue head
//
PQUEUE_HEAD m_QueueHead;
//
// allocated setup packet from the DMA pool
//
PUSB_DEFAULT_PIPE_SETUP_PACKET m_DescriptorPacket;
PHYSICAL_ADDRESS m_DescriptorSetupPacket;
//
// stores the result of the operation
//
NTSTATUS m_NtStatusCode;
ULONG m_UrbStatusCode;
// buffer base address
PVOID m_Base;
// device speed
USB_DEVICE_SPEED m_Speed;
};
//----------------------------------------------------------------------------------------
CUSBRequest::CUSBRequest(IUnknown *OuterUnknown) :
m_CompletionEvent(NULL)
{
UNREFERENCED_PARAMETER(OuterUnknown);
}
//----------------------------------------------------------------------------------------
CUSBRequest::~CUSBRequest()
{
if (m_CompletionEvent != NULL)
{
ExFreePoolWithTag(m_CompletionEvent, TAG_USBEHCI);
}
}
//----------------------------------------------------------------------------------------
NTSTATUS
STDMETHODCALLTYPE
CUSBRequest::QueryInterface(
IN REFIID refiid,
OUT PVOID* Output)
{
return STATUS_UNSUCCESSFUL;
}
//----------------------------------------------------------------------------------------
NTSTATUS
STDMETHODCALLTYPE
CUSBRequest::InitializeWithSetupPacket(
IN PDMAMEMORYMANAGER DmaManager,
IN PUSB_DEFAULT_PIPE_SETUP_PACKET SetupPacket,
IN PUSBDEVICE Device,
IN OPTIONAL PUSB_ENDPOINT EndpointDescriptor,
IN OUT ULONG TransferBufferLength,
IN OUT PMDL TransferBuffer)
{
//
// sanity checks
//
PC_ASSERT(DmaManager);
PC_ASSERT(SetupPacket);
//
// initialize packet
//
m_DmaManager = DmaManager;
m_SetupPacket = SetupPacket;
m_TransferBufferLength = TransferBufferLength;
m_TransferBufferMDL = TransferBuffer;
m_DeviceAddress = Device->GetDeviceAddress();
m_Speed = Device->GetSpeed();
m_EndpointDescriptor = EndpointDescriptor;
m_TotalBytesTransferred = 0;
//
// Set Length Completed to 0
//
m_TransferBufferLengthCompleted = 0;
//
// allocate completion event
//
m_CompletionEvent = (PKEVENT)ExAllocatePoolWithTag(NonPagedPool, sizeof(KEVENT), TAG_USBEHCI);
if (!m_CompletionEvent)
{
//
// failed to allocate completion event
//
return STATUS_INSUFFICIENT_RESOURCES;
}
//
// initialize completion event
//
KeInitializeEvent(m_CompletionEvent, NotificationEvent, FALSE);
//
// done
//
return STATUS_SUCCESS;
}
//----------------------------------------------------------------------------------------
NTSTATUS
STDMETHODCALLTYPE
CUSBRequest::InitializeWithIrp(
IN PDMAMEMORYMANAGER DmaManager,
IN PUSBDEVICE Device,
IN OUT PIRP Irp)
{
PIO_STACK_LOCATION IoStack;
PURB Urb;
//
// sanity checks
//
PC_ASSERT(DmaManager);
PC_ASSERT(Irp);
m_DmaManager = DmaManager;
m_TotalBytesTransferred = 0;
m_Speed = Device->GetSpeed();
//
// get current irp stack location
//
IoStack = IoGetCurrentIrpStackLocation(Irp);
//
// sanity check
//
PC_ASSERT(IoStack->MajorFunction == IRP_MJ_INTERNAL_DEVICE_CONTROL);
PC_ASSERT(IoStack->Parameters.DeviceIoControl.IoControlCode == IOCTL_INTERNAL_USB_SUBMIT_URB);
PC_ASSERT(IoStack->Parameters.Others.Argument1 != 0);
//
// get urb
//
Urb = (PURB)IoStack->Parameters.Others.Argument1;
//
// store irp
//
m_Irp = Irp;
//
// check function type
//
switch (Urb->UrbHeader.Function)
{
//
// luckily those request have the same structure layout
//
case URB_FUNCTION_CLASS_INTERFACE:
case URB_FUNCTION_GET_DESCRIPTOR_FROM_DEVICE:
case URB_FUNCTION_BULK_OR_INTERRUPT_TRANSFER:
{
//
// bulk interrupt transfer
//
if (Urb->UrbBulkOrInterruptTransfer.TransferBufferLength)
{
//
// Check if there is a MDL
//
if (!Urb->UrbBulkOrInterruptTransfer.TransferBufferMDL)
{
//
// sanity check
//
PC_ASSERT(Urb->UrbBulkOrInterruptTransfer.TransferBuffer);
//
// Create one using TransferBuffer
//
DPRINT("Creating Mdl from Urb Buffer %p Length %lu\n", Urb->UrbBulkOrInterruptTransfer.TransferBuffer, Urb->UrbBulkOrInterruptTransfer.TransferBufferLength);
m_TransferBufferMDL = IoAllocateMdl(Urb->UrbBulkOrInterruptTransfer.TransferBuffer,
Urb->UrbBulkOrInterruptTransfer.TransferBufferLength,
FALSE,
FALSE,
NULL);
if (!m_TransferBufferMDL)
{
//
// failed to allocate mdl
//
return STATUS_INSUFFICIENT_RESOURCES;
}
//
// build mdl for non paged pool
// FIXME: Does hub driver already do this when passing MDL?
//
MmBuildMdlForNonPagedPool(m_TransferBufferMDL);
//
// Keep that ehci created the MDL and needs to free it.
//
}
else
{
m_TransferBufferMDL = Urb->UrbBulkOrInterruptTransfer.TransferBufferMDL;
}
//
// save buffer length
//
m_TransferBufferLength = Urb->UrbBulkOrInterruptTransfer.TransferBufferLength;
//
// Set Length Completed to 0
//
m_TransferBufferLengthCompleted = 0;
//
// get endpoint descriptor
//
m_EndpointDescriptor = (PUSB_ENDPOINT)Urb->UrbBulkOrInterruptTransfer.PipeHandle;
}
break;
}
default:
DPRINT1("URB Function: not supported %x\n", Urb->UrbHeader.Function);
//ASSERT(FALSE);
}
//
// done
//
return STATUS_SUCCESS;
}
//----------------------------------------------------------------------------------------
VOID
STDMETHODCALLTYPE
CUSBRequest::CompletionCallback(
IN NTSTATUS NtStatusCode,
IN ULONG UrbStatusCode,
IN struct _QUEUE_HEAD *QueueHead)
{
PIO_STACK_LOCATION IoStack;
PURB Urb;
//
// FIXME: support linked queue heads
//
//
// store completion code
//
m_NtStatusCode = NtStatusCode;
m_UrbStatusCode = UrbStatusCode;
if (m_Irp)
{
//
// set irp completion status
//
m_Irp->IoStatus.Status = NtStatusCode;
//
// get current irp stack location
//
IoStack = IoGetCurrentIrpStackLocation(m_Irp);
//
// get urb
//
Urb = (PURB)IoStack->Parameters.Others.Argument1;
//
// store urb status
//
Urb->UrbHeader.Status = UrbStatusCode;
//
// Check if the MDL was created
//
if (!Urb->UrbBulkOrInterruptTransfer.TransferBufferMDL)
{
//
// Free Mdl
//
IoFreeMdl(m_TransferBufferMDL);
}
//
// check if the request was successful
//
if (!NT_SUCCESS(NtStatusCode))
{
//
// set returned length to zero in case of error
//
Urb->UrbHeader.Length = 0;
}
else
{
//
// calculate transfer length
//
Urb->UrbBulkOrInterruptTransfer.TransferBufferLength = InternalCalculateTransferLength();
}
DPRINT("Request %p Completing Irp %p NtStatusCode %x UrbStatusCode %x Transferred Length %lu\n", this, m_Irp, NtStatusCode, UrbStatusCode, Urb->UrbBulkOrInterruptTransfer.TransferBufferLength);
//
// FIXME: check if the transfer was split
// if yes dont complete irp yet
//
IoCompleteRequest(m_Irp, IO_NO_INCREMENT);
}
else
{
//
// signal completion event
//
PC_ASSERT(m_CompletionEvent);
KeSetEvent(m_CompletionEvent, 0, FALSE);
}
}
//----------------------------------------------------------------------------------------
NTSTATUS
STDMETHODCALLTYPE
CUSBRequest::GetQueueHead(
struct _QUEUE_HEAD ** OutHead)
{
ULONG TransferType;
NTSTATUS Status;
//
// first get transfer type
//
TransferType = InternalGetTransferType();
//
// build request depending on type
//
switch(TransferType)
{
case USB_ENDPOINT_TYPE_CONTROL:
Status = BuildControlTransferQueueHead(OutHead);
break;
case USB_ENDPOINT_TYPE_INTERRUPT:
case USB_ENDPOINT_TYPE_BULK:
Status = BuildBulkInterruptTransferQueueHead(OutHead);
break;
case USB_ENDPOINT_TYPE_ISOCHRONOUS:
DPRINT1("USB_ENDPOINT_TYPE_ISOCHRONOUS not implemented\n");
Status = STATUS_NOT_IMPLEMENTED;
break;
default:
PC_ASSERT(FALSE);
Status = STATUS_NOT_IMPLEMENTED;
break;
}
if (NT_SUCCESS(Status))
{
//
// store queue head
//
m_QueueHead = *OutHead;
//
// store request object
//
(*OutHead)->Request = PVOID(this);
}
//
// done
//
return Status;
}
//----------------------------------------------------------------------------------------
BOOLEAN
STDMETHODCALLTYPE
CUSBRequest::IsRequestComplete()
{
//
// FIXME: check if request was split
//
//
// Check if the transfer was completed, only valid for Bulk Transfers
//
if ((m_TransferBufferLengthCompleted < m_TransferBufferLength)
&& (GetTransferType() == USB_ENDPOINT_TYPE_BULK))
{
//
// Transfer not completed
//
return FALSE;
}
return TRUE;
}
//----------------------------------------------------------------------------------------
ULONG
STDMETHODCALLTYPE
CUSBRequest::GetTransferType()
{
//
// call internal implementation
//
return InternalGetTransferType();
}
//----------------------------------------------------------------------------------------
ULONG
CUSBRequest::InternalGetTransferType()
{
ULONG TransferType;
//
// check if an irp is provided
//
if (m_Irp)
{
ASSERT(m_EndpointDescriptor);
//
// end point is defined in the low byte of bmAttributes
//
TransferType = (m_EndpointDescriptor->EndPointDescriptor.bmAttributes & USB_ENDPOINT_TYPE_MASK);
}
else
{
//
// initialized with setup packet, must be a control transfer
//
TransferType = USB_ENDPOINT_TYPE_CONTROL;
ASSERT(m_EndpointDescriptor == NULL);
}
//
// done
//
return TransferType;
}
UCHAR
CUSBRequest::InternalGetPidDirection()
{
if (m_EndpointDescriptor)
{
//
// end point direction is highest bit in bEndpointAddress
//
return (m_EndpointDescriptor->EndPointDescriptor.bEndpointAddress & USB_ENDPOINT_DIRECTION_MASK) >> 7;
}
else
{
//
// request arrives on the control pipe, extract direction from setup packet
//
ASSERT(m_DescriptorPacket);
return (m_DescriptorPacket->bmRequestType.B >> 7);
}
}
VOID
STDMETHODCALLTYPE
CUSBRequest::InitDescriptor(
IN PQUEUE_TRANSFER_DESCRIPTOR CurrentDescriptor,
IN PVOID TransferBuffer,
IN ULONG TransferBufferLength,
IN UCHAR PidCode,
IN UCHAR DataToggle,
OUT PULONG OutDescriptorLength)
{
ULONG Index, Length = 0, PageOffset, BufferLength;
PHYSICAL_ADDRESS Address;
//
// init transfer descriptor
//
CurrentDescriptor->Token.Bits.PIDCode = PidCode;
CurrentDescriptor->Token.Bits.TotalBytesToTransfer = 0;
CurrentDescriptor->Token.Bits.DataToggle = DataToggle;
//
// sanity check
//
ASSERT(TransferBufferLength);
//
// store buffers
//
Index = 0;
do
{
//
// get address (HACK)
//
*(volatile char *)TransferBuffer;
Address = MmGetPhysicalAddress(TransferBuffer);
//
// use physical address
//
CurrentDescriptor->BufferPointer[Index] = Address.LowPart;
CurrentDescriptor->ExtendedBufferPointer[Index] = Address.HighPart;
//
// Get the offset from page size
//
PageOffset = BYTE_OFFSET(CurrentDescriptor->BufferPointer[Index]);
if (PageOffset != 0)
{
//
// move to next page
//
TransferBuffer = (PVOID)ROUND_TO_PAGES(TransferBuffer);
}
else
{
//
// move to next page
//
TransferBuffer = (PVOID)((ULONG_PTR)TransferBuffer + PAGE_SIZE);
}
//
// calculate buffer length
//
BufferLength = min(TransferBufferLength, PAGE_SIZE - PageOffset);
//
// increment transfer bytes
//
CurrentDescriptor->Token.Bits.TotalBytesToTransfer += BufferLength;
CurrentDescriptor->TotalBytesToTransfer += BufferLength;
Length += BufferLength;
DPRINT("Index %lu TransferBufferLength %lu PageOffset %x BufferLength %lu Buffer Phy %p TransferBuffer %p\n", Index, TransferBufferLength, PageOffset, BufferLength, CurrentDescriptor->BufferPointer[Index], TransferBuffer);
//
// decrement available byte count
//
TransferBufferLength -= BufferLength;
if (TransferBufferLength == 0)
{
//
// end reached
//
break;
}
//
// sanity check
//
if (Index > 1)
{
//
// no equal buffers
//
ASSERT(CurrentDescriptor->BufferPointer[Index] != CurrentDescriptor->BufferPointer[Index-1]);
}
//
// next descriptor index
//
Index++;
}while(Index < 5);
//
// store result
//
*OutDescriptorLength = Length;
}
NTSTATUS
STDMETHODCALLTYPE
CUSBRequest::BuildTransferDescriptorChain(
IN PQUEUE_HEAD QueueHead,
IN PVOID TransferBuffer,
IN ULONG TransferBufferLength,
IN UCHAR PidCode,
IN UCHAR InitialDataToggle,
OUT PQUEUE_TRANSFER_DESCRIPTOR * OutFirstDescriptor,
OUT PQUEUE_TRANSFER_DESCRIPTOR * OutLastDescriptor,
OUT PUCHAR OutDataToggle,
OUT PULONG OutTransferBufferOffset)
{
PQUEUE_TRANSFER_DESCRIPTOR FirstDescriptor = NULL, CurrentDescriptor, LastDescriptor = NULL;
NTSTATUS Status;
ULONG DescriptorLength, TransferBufferOffset = 0;
ULONG MaxPacketSize = 0, TransferSize;
//
// is there an endpoint descriptor
//
if (m_EndpointDescriptor)
{
//
// use endpoint packet size
//
MaxPacketSize = m_EndpointDescriptor->EndPointDescriptor.wMaxPacketSize;
}
do
{
//
// allocate transfer descriptor
//
Status = CreateDescriptor(&CurrentDescriptor);
if (!NT_SUCCESS(Status))
{
//
// failed to allocate transfer descriptor
//
return STATUS_INSUFFICIENT_RESOURCES;
}
if (MaxPacketSize)
{
//
// transfer size is minimum available buffer or endpoint size
//
TransferSize = min(TransferBufferLength - TransferBufferOffset, MaxPacketSize);
}
else
{
//
// use available buffer
//
TransferSize = TransferBufferLength - TransferBufferOffset;
}
//
// now init the descriptor
//
InitDescriptor(CurrentDescriptor,
(PVOID)((ULONG_PTR)TransferBuffer + TransferBufferOffset),
TransferSize,
PidCode,
InitialDataToggle,
&DescriptorLength);
//
// insert into queue head
//
InsertTailList(&QueueHead->TransferDescriptorListHead, &CurrentDescriptor->DescriptorEntry);
//
// adjust offset
//
TransferBufferOffset += DescriptorLength;
if (LastDescriptor)
{
//
// link to current descriptor
//
LastDescriptor->NextPointer = CurrentDescriptor->PhysicalAddr;
LastDescriptor = CurrentDescriptor;
}
else
{
//
// first descriptor in chain
//
LastDescriptor = FirstDescriptor = CurrentDescriptor;
}
//
// flip data toggle
//
InitialDataToggle = !InitialDataToggle;
if(TransferBufferLength == TransferBufferOffset)
{
//
// end reached
//
break;
}
}while(TRUE);
if (OutFirstDescriptor)
{
//
// store first descriptor
//
*OutFirstDescriptor = FirstDescriptor;
}
if (OutLastDescriptor)
{
//
// store last descriptor
//
*OutLastDescriptor = CurrentDescriptor;
}
if (OutDataToggle)
{
//
// store result data toggle
//
*OutDataToggle = InitialDataToggle;
}
if (OutTransferBufferOffset)
{
//
// store offset
//
*OutTransferBufferOffset = TransferBufferOffset;
}
//
// done
//
return STATUS_SUCCESS;
}
//----------------------------------------------------------------------------------------
NTSTATUS
CUSBRequest::BuildControlTransferQueueHead(
PQUEUE_HEAD * OutHead)
{
NTSTATUS Status;
ULONG DescriptorChainLength;
PQUEUE_HEAD QueueHead;
PQUEUE_TRANSFER_DESCRIPTOR SetupDescriptor, StatusDescriptor, FirstDescriptor, LastDescriptor;
//
// first allocate the queue head
//
Status = CreateQueueHead(&QueueHead);
if (!NT_SUCCESS(Status))
{
//
// failed to allocate queue head
//
DPRINT1("[EHCI] Failed to create queue head\n");
return Status;
}
//
// sanity check
//
PC_ASSERT(QueueHead);
//
// create setup packet
//
Status = BuildSetupPacket();
if (!NT_SUCCESS(Status))
{
// failed to create setup packet
DPRINT1("[EHCI] Failed to create setup packet\n");
// release queue head
m_DmaManager->Release(QueueHead, sizeof(QUEUE_HEAD));
return Status;
}
//
// create setup descriptor
//
Status = CreateDescriptor(&SetupDescriptor);
if (!NT_SUCCESS(Status))
{
// failed to create setup transfer descriptor
DPRINT1("[EHCI] Failed to create setup descriptor\n");
if (m_DescriptorPacket)
{
// release packet descriptor
m_DmaManager->Release(m_DescriptorPacket, sizeof(USB_DEFAULT_PIPE_SETUP_PACKET));
}
// release queue head
m_DmaManager->Release(QueueHead, sizeof(QUEUE_HEAD));
return Status;
}
//
// create status descriptor
//
Status = CreateDescriptor(&StatusDescriptor);
if (!NT_SUCCESS(Status))
{
// failed to create status transfer descriptor
DPRINT1("[EHCI] Failed to create status descriptor\n");
// release setup transfer descriptor
m_DmaManager->Release(SetupDescriptor, sizeof(QUEUE_TRANSFER_DESCRIPTOR));
if (m_DescriptorPacket)
{
// release packet descriptor
m_DmaManager->Release(m_DescriptorPacket, sizeof(USB_DEFAULT_PIPE_SETUP_PACKET));
}
// release queue head
m_DmaManager->Release(QueueHead, sizeof(QUEUE_HEAD));
return Status;
}
//
// now initialize the queue head
//
QueueHead->EndPointCharacteristics.DeviceAddress = GetDeviceAddress();
ASSERT(m_EndpointDescriptor == NULL);
//
// init setup descriptor
//
SetupDescriptor->Token.Bits.PIDCode = PID_CODE_SETUP_TOKEN;
SetupDescriptor->Token.Bits.TotalBytesToTransfer = sizeof(USB_DEFAULT_PIPE_SETUP_PACKET);
SetupDescriptor->Token.Bits.DataToggle = FALSE;
SetupDescriptor->BufferPointer[0] = m_DescriptorSetupPacket.LowPart;
SetupDescriptor->ExtendedBufferPointer[0] = m_DescriptorSetupPacket.HighPart;
InsertTailList(&QueueHead->TransferDescriptorListHead, &SetupDescriptor->DescriptorEntry);
//
// init status descriptor
//
StatusDescriptor->Token.Bits.TotalBytesToTransfer = 0;
StatusDescriptor->Token.Bits.DataToggle = TRUE;
StatusDescriptor->Token.Bits.InterruptOnComplete = TRUE;
//
// is there data
//
if (m_TransferBufferLength)
{
Status = BuildTransferDescriptorChain(QueueHead,
MmGetMdlVirtualAddress(m_TransferBufferMDL),
m_TransferBufferLength,
InternalGetPidDirection(),
TRUE,
&FirstDescriptor,
&LastDescriptor,
NULL,
&DescriptorChainLength);
if (!NT_SUCCESS(Status))
{
// failed to create descriptor chain
DPRINT1("[EHCI] Failed to create descriptor chain\n");
// release status transfer descriptor
m_DmaManager->Release(StatusDescriptor, sizeof(QUEUE_TRANSFER_DESCRIPTOR));
// release setup transfer descriptor
m_DmaManager->Release(SetupDescriptor, sizeof(QUEUE_TRANSFER_DESCRIPTOR));
if (m_DescriptorPacket)
{
// release packet descriptor
m_DmaManager->Release(m_DescriptorPacket, sizeof(USB_DEFAULT_PIPE_SETUP_PACKET));
}
// release queue head
m_DmaManager->Release(QueueHead, sizeof(QUEUE_HEAD));
return Status;
}
if (m_TransferBufferLength != DescriptorChainLength)
{
DPRINT1("DescriptorChainLength %x\n", DescriptorChainLength);
DPRINT1("m_TransferBufferLength %x\n", m_TransferBufferLength);
ASSERT(FALSE);
}
//
// now link the descriptors
//
SetupDescriptor->NextPointer = FirstDescriptor->PhysicalAddr;
SetupDescriptor->AlternateNextPointer = FirstDescriptor->PhysicalAddr;
LastDescriptor->NextPointer = StatusDescriptor->PhysicalAddr;
LastDescriptor->AlternateNextPointer = StatusDescriptor->PhysicalAddr;
//
// pid code is flipped for ops with data stage
//
StatusDescriptor->Token.Bits.PIDCode = !InternalGetPidDirection();
}
else
{
//
// direct link
//
SetupDescriptor->NextPointer = StatusDescriptor->PhysicalAddr;
SetupDescriptor->AlternateNextPointer = StatusDescriptor->PhysicalAddr;
//
// retrieve result of operation
//
StatusDescriptor->Token.Bits.PIDCode = PID_CODE_IN_TOKEN;
}
//
// insert status descriptor
//
InsertTailList(&QueueHead->TransferDescriptorListHead, &StatusDescriptor->DescriptorEntry);
//
// link transfer descriptors to queue head
//
QueueHead->NextPointer = SetupDescriptor->PhysicalAddr;
//
// store result
//
*OutHead = QueueHead;
//
// displays the current request
//
//DumpQueueHead(QueueHead);
DPRINT("BuildControlTransferQueueHead done\n");
//
// done
//
return STATUS_SUCCESS;
}
VOID
CUSBRequest::DumpQueueHead(
IN PQUEUE_HEAD QueueHead)
{
PLIST_ENTRY Entry;
PQUEUE_TRANSFER_DESCRIPTOR Descriptor;
ULONG Index = 0;
DPRINT1("QueueHead %p Addr %x\n", QueueHead, QueueHead->PhysicalAddr);
DPRINT1("QueueHead AlternateNextPointer %x\n", QueueHead->AlternateNextPointer);
DPRINT1("QueueHead NextPointer %x\n", QueueHead->NextPointer);
DPRINT1("QueueHead HubAddr %x\n", QueueHead->EndPointCharacteristics.ControlEndPointFlag);
DPRINT1("QueueHead DeviceAddress %x\n", QueueHead->EndPointCharacteristics.DeviceAddress);
DPRINT1("QueueHead EndPointNumber %x\n", QueueHead->EndPointCharacteristics.EndPointNumber);
DPRINT1("QueueHead EndPointSpeed %x\n", QueueHead->EndPointCharacteristics.EndPointSpeed);
DPRINT1("QueueHead HeadOfReclamation %x\n", QueueHead->EndPointCharacteristics.HeadOfReclamation);
DPRINT1("QueueHead InactiveOnNextTransaction %x\n", QueueHead->EndPointCharacteristics.InactiveOnNextTransaction);
DPRINT1("QueueHead MaximumPacketLength %x\n", QueueHead->EndPointCharacteristics.MaximumPacketLength);
DPRINT1("QueueHead NakCountReload %x\n", QueueHead->EndPointCharacteristics.NakCountReload);
DPRINT1("QueueHead QEDTDataToggleControl %x\n", QueueHead->EndPointCharacteristics.QEDTDataToggleControl);
DPRINT1("QueueHead HubAddr %x\n", QueueHead->EndPointCapabilities.HubAddr);
DPRINT1("QueueHead InterruptScheduleMask %x\n", QueueHead->EndPointCapabilities.InterruptScheduleMask);
DPRINT1("QueueHead NumberOfTransactionPerFrame %x\n", QueueHead->EndPointCapabilities.NumberOfTransactionPerFrame);
DPRINT1("QueueHead PortNumber %x\n", QueueHead->EndPointCapabilities.PortNumber);
DPRINT1("QueueHead SplitCompletionMask %x\n", QueueHead->EndPointCapabilities.SplitCompletionMask);
Entry = QueueHead->TransferDescriptorListHead.Flink;
while(Entry != &QueueHead->TransferDescriptorListHead)
{
//
// get transfer descriptor
//
Descriptor = (PQUEUE_TRANSFER_DESCRIPTOR)CONTAINING_RECORD(Entry, QUEUE_TRANSFER_DESCRIPTOR, DescriptorEntry);
DPRINT1("TransferDescriptor %lu Addr %x\n", Index, Descriptor->PhysicalAddr);
DPRINT1("TransferDescriptor %lu Next %x\n", Index, Descriptor->NextPointer);
DPRINT1("TransferDescriptor %lu AlternateNextPointer %x\n", Index, Descriptor->AlternateNextPointer);
DPRINT1("TransferDescriptor %lu Active %lu\n", Index, Descriptor->Token.Bits.Active);
DPRINT1("TransferDescriptor %lu BabbleDetected %lu\n", Index, Descriptor->Token.Bits.BabbleDetected);
DPRINT1("TransferDescriptor %lu CurrentPage %lu\n", Index, Descriptor->Token.Bits.CurrentPage);
DPRINT1("TransferDescriptor %lu DataBufferError %lu\n", Index, Descriptor->Token.Bits.DataBufferError);
DPRINT1("TransferDescriptor %lu DataToggle %lu\n", Index, Descriptor->Token.Bits.DataToggle);
DPRINT1("TransferDescriptor %lu ErrorCounter %lu\n", Index, Descriptor->Token.Bits.ErrorCounter);
DPRINT1("TransferDescriptor %lu Halted %lu\n", Index, Descriptor->Token.Bits.Halted);
DPRINT1("TransferDescriptor %lu InterruptOnComplete %x\n", Index, Descriptor->Token.Bits.InterruptOnComplete);
DPRINT1("TransferDescriptor %lu MissedMicroFrame %lu\n", Index, Descriptor->Token.Bits.MissedMicroFrame);
DPRINT1("TransferDescriptor %lu PIDCode %lu\n", Index, Descriptor->Token.Bits.PIDCode);
DPRINT1("TransferDescriptor %lu PingState %lu\n", Index, Descriptor->Token.Bits.PingState);
DPRINT1("TransferDescriptor %lu SplitTransactionState %lu\n", Index, Descriptor->Token.Bits.SplitTransactionState);
DPRINT1("TransferDescriptor %lu TotalBytesToTransfer %lu\n", Index, Descriptor->Token.Bits.TotalBytesToTransfer);
DPRINT1("TransferDescriptor %lu TransactionError %lu\n", Index, Descriptor->Token.Bits.TransactionError);
DPRINT1("TransferDescriptor %lu Buffer Pointer 0 %x\n", Index, Descriptor->BufferPointer[0]);
DPRINT1("TransferDescriptor %lu Buffer Pointer 1 %x\n", Index, Descriptor->BufferPointer[1]);
DPRINT1("TransferDescriptor %lu Buffer Pointer 2 %x\n", Index, Descriptor->BufferPointer[2]);
DPRINT1("TransferDescriptor %lu Buffer Pointer 3 %x\n", Index, Descriptor->BufferPointer[3]);
DPRINT1("TransferDescriptor %lu Buffer Pointer 4 %x\n", Index, Descriptor->BufferPointer[4]);
Entry = Entry->Flink;
Index++;
}
}
//----------------------------------------------------------------------------------------
NTSTATUS
CUSBRequest::BuildBulkInterruptTransferQueueHead(
PQUEUE_HEAD * OutHead)
{
NTSTATUS Status;
PQUEUE_HEAD QueueHead;
PVOID Base;
ULONG ChainDescriptorLength;
PQUEUE_TRANSFER_DESCRIPTOR FirstDescriptor, LastDescriptor;
//
// Allocate the queue head
//
Status = CreateQueueHead(&QueueHead);
if (!NT_SUCCESS(Status))
{
//
// failed to allocate queue head
//
DPRINT1("[EHCI] Failed to create queue head\n");
return Status;
}
//
// sanity checks
//
PC_ASSERT(QueueHead);
PC_ASSERT(m_TransferBufferLength);
if (!m_Base)
{
//
// get virtual base of mdl
//
m_Base = MmGetSystemAddressForMdlSafe(m_TransferBufferMDL, NormalPagePriority);
}
//
// Increase the size of last transfer, 0 in case this is the first
//
Base = (PVOID)((ULONG_PTR)m_Base + m_TransferBufferLengthCompleted);
PC_ASSERT(m_EndpointDescriptor);
PC_ASSERT(Base);
//
// sanity check
//
ASSERT(m_EndpointDescriptor);
//
// use 4 * PAGE_SIZE at max for each new request
//
ULONG MaxTransferLength = min(4 * PAGE_SIZE, m_TransferBufferLength - m_TransferBufferLengthCompleted);
//
// build bulk transfer descriptor chain
//
Status = BuildTransferDescriptorChain(QueueHead,
Base,
MaxTransferLength,
InternalGetPidDirection(),
m_EndpointDescriptor->DataToggle,
&FirstDescriptor,
&LastDescriptor,
&m_EndpointDescriptor->DataToggle,
&ChainDescriptorLength);
if (!NT_SUCCESS(Status))
{
//
// failed to build transfer descriptor chain
//
DPRINT1("[EHCI] Failed to create descriptor chain\n");
m_DmaManager->Release(QueueHead, sizeof(QUEUE_HEAD));
return Status;
}
//
// move to next offset
//
m_TransferBufferLengthCompleted += ChainDescriptorLength;
//
// init queue head
//
QueueHead->EndPointCharacteristics.DeviceAddress = GetDeviceAddress();
QueueHead->EndPointCharacteristics.EndPointNumber = m_EndpointDescriptor->EndPointDescriptor.bEndpointAddress & 0x0F;
QueueHead->EndPointCharacteristics.MaximumPacketLength = m_EndpointDescriptor->EndPointDescriptor.wMaxPacketSize;
QueueHead->NextPointer = FirstDescriptor->PhysicalAddr;
QueueHead->CurrentLinkPointer = FirstDescriptor->PhysicalAddr;
QueueHead->AlternateNextPointer = TERMINATE_POINTER;
ASSERT(QueueHead->EndPointCharacteristics.DeviceAddress);
ASSERT(QueueHead->EndPointCharacteristics.EndPointNumber);
ASSERT(QueueHead->EndPointCharacteristics.MaximumPacketLength);
ASSERT(QueueHead->NextPointer);
//
// interrupt on last descriptor
//
LastDescriptor->Token.Bits.InterruptOnComplete = TRUE;
//
// store result
//
*OutHead = QueueHead;
//
// dump status
//
//DumpQueueHead(QueueHead);
//
// done
//
return STATUS_SUCCESS;
}
//----------------------------------------------------------------------------------------
NTSTATUS
STDMETHODCALLTYPE
CUSBRequest::CreateDescriptor(
PQUEUE_TRANSFER_DESCRIPTOR *OutDescriptor)
{
PQUEUE_TRANSFER_DESCRIPTOR Descriptor;
NTSTATUS Status;
PHYSICAL_ADDRESS TransferDescriptorPhysicalAddress;
//
// allocate descriptor
//
Status = m_DmaManager->Allocate(sizeof(QUEUE_TRANSFER_DESCRIPTOR), (PVOID*)&Descriptor, &TransferDescriptorPhysicalAddress);
if (!NT_SUCCESS(Status))
{
//
// failed to allocate transfer descriptor
//
return STATUS_INSUFFICIENT_RESOURCES;
}
//
// initialize transfer descriptor
//
Descriptor->NextPointer = TERMINATE_POINTER;
Descriptor->AlternateNextPointer = TERMINATE_POINTER;
Descriptor->Token.Bits.DataToggle = TRUE;
Descriptor->Token.Bits.ErrorCounter = 0x03;
Descriptor->Token.Bits.Active = TRUE;
Descriptor->PhysicalAddr = TransferDescriptorPhysicalAddress.LowPart;
//
// store result
//
*OutDescriptor = Descriptor;
//
// done
//
return Status;
}
//----------------------------------------------------------------------------------------
NTSTATUS
CUSBRequest::CreateQueueHead(
PQUEUE_HEAD *OutQueueHead)
{
PQUEUE_HEAD QueueHead;
PHYSICAL_ADDRESS QueueHeadPhysicalAddress;
NTSTATUS Status;
//
// allocate queue head
//
Status = m_DmaManager->Allocate(sizeof(QUEUE_HEAD), (PVOID*)&QueueHead, &QueueHeadPhysicalAddress);
if (!NT_SUCCESS(Status))
{
//
// failed to allocate queue head
//
return STATUS_INSUFFICIENT_RESOURCES;
}
//
// initialize queue head
//
QueueHead->HorizontalLinkPointer = TERMINATE_POINTER;
QueueHead->AlternateNextPointer = TERMINATE_POINTER;
QueueHead->NextPointer = TERMINATE_POINTER;
InitializeListHead(&QueueHead->TransferDescriptorListHead);
//
// 1 for non high speed, 0 for high speed device
//
QueueHead->EndPointCharacteristics.ControlEndPointFlag = 0;
QueueHead->EndPointCharacteristics.HeadOfReclamation = FALSE;
QueueHead->EndPointCharacteristics.MaximumPacketLength = 64;
//
// Set NakCountReload to max value possible
//
QueueHead->EndPointCharacteristics.NakCountReload = 0x3;
//
// Get the Initial Data Toggle from the QEDT
//
QueueHead->EndPointCharacteristics.QEDTDataToggleControl = TRUE;
//
// FIXME: check if High Speed Device
//
QueueHead->EndPointCharacteristics.EndPointSpeed = QH_ENDPOINT_HIGHSPEED;
QueueHead->EndPointCapabilities.NumberOfTransactionPerFrame = 0x01;
QueueHead->Token.DWord = 0;
QueueHead->Token.Bits.InterruptOnComplete = FALSE;
//
// store address
//
QueueHead->PhysicalAddr = QueueHeadPhysicalAddress.LowPart;
//
// output queue head
//
*OutQueueHead = QueueHead;
//
// done
//
return STATUS_SUCCESS;
}
//----------------------------------------------------------------------------------------
UCHAR
STDMETHODCALLTYPE
CUSBRequest::GetDeviceAddress()
{
PIO_STACK_LOCATION IoStack;
PURB Urb;
PUSBDEVICE UsbDevice;
//
// check if there is an irp provided
//
if (!m_Irp)
{
//
// used provided address
//
return m_DeviceAddress;
}
//
// get current stack location
//
IoStack = IoGetCurrentIrpStackLocation(m_Irp);
//
// get contained urb
//
Urb = (PURB)IoStack->Parameters.Others.Argument1;
//
// check if there is a pipe handle provided
//
if (Urb->UrbHeader.UsbdDeviceHandle)
{
//
// there is a device handle provided
//
UsbDevice = (PUSBDEVICE)Urb->UrbHeader.UsbdDeviceHandle;
//
// return device address
//
return UsbDevice->GetDeviceAddress();
}
//
// no device handle provided, it is the host root bus
//
return 0;
}
//----------------------------------------------------------------------------------------
NTSTATUS
CUSBRequest::BuildSetupPacket()
{
NTSTATUS Status;
//
// allocate common buffer setup packet
//
Status = m_DmaManager->Allocate(sizeof(USB_DEFAULT_PIPE_SETUP_PACKET), (PVOID*)&m_DescriptorPacket, &m_DescriptorSetupPacket);
if (!NT_SUCCESS(Status))
{
//
// no memory
//
return Status;
}
if (m_SetupPacket)
{
//
// copy setup packet
//
RtlCopyMemory(m_DescriptorPacket, m_SetupPacket, sizeof(USB_DEFAULT_PIPE_SETUP_PACKET));
}
else
{
//
// build setup packet from urb
//
Status = BuildSetupPacketFromURB();
}
//
// done
//
return Status;
}
NTSTATUS
CUSBRequest::BuildSetupPacketFromURB()
{
PIO_STACK_LOCATION IoStack;
PURB Urb;
NTSTATUS Status = STATUS_NOT_IMPLEMENTED;
//
// sanity checks
//
PC_ASSERT(m_Irp);
PC_ASSERT(m_DescriptorPacket);
//
// get stack location
//
IoStack = IoGetCurrentIrpStackLocation(m_Irp);
//
// get urb
//
Urb = (PURB)IoStack->Parameters.Others.Argument1;
//
// zero descriptor packet
//
RtlZeroMemory(m_DescriptorPacket, sizeof(USB_DEFAULT_PIPE_SETUP_PACKET));
switch (Urb->UrbHeader.Function)
{
/* CLEAR FEATURE */
case URB_FUNCTION_CLEAR_FEATURE_TO_DEVICE:
case URB_FUNCTION_CLEAR_FEATURE_TO_INTERFACE:
case URB_FUNCTION_CLEAR_FEATURE_TO_ENDPOINT:
UNIMPLEMENTED;
break;
/* GET CONFIG */
case URB_FUNCTION_GET_CONFIGURATION:
m_DescriptorPacket->bRequest = USB_REQUEST_GET_CONFIGURATION;
m_DescriptorPacket->bmRequestType.B = 0x80;
m_DescriptorPacket->wLength = 1;
break;
/* GET DESCRIPTOR */
case URB_FUNCTION_GET_DESCRIPTOR_FROM_DEVICE:
m_DescriptorPacket->bRequest = USB_REQUEST_GET_DESCRIPTOR;
m_DescriptorPacket->wValue.LowByte = Urb->UrbControlDescriptorRequest.Index;
m_DescriptorPacket->wValue.HiByte = Urb->UrbControlDescriptorRequest.DescriptorType;
m_DescriptorPacket->wIndex.W = Urb->UrbControlDescriptorRequest.LanguageId;
m_DescriptorPacket->wLength = (USHORT)Urb->UrbControlDescriptorRequest.TransferBufferLength;
m_DescriptorPacket->bmRequestType.B = 0x80;
break;
/* GET INTERFACE */
case URB_FUNCTION_GET_INTERFACE:
m_DescriptorPacket->bRequest = USB_REQUEST_GET_CONFIGURATION;
m_DescriptorPacket->wIndex.W = Urb->UrbControlGetStatusRequest.Index;
m_DescriptorPacket->bmRequestType.B = 0x80;
m_DescriptorPacket->wLength = 1;
break;
/* GET STATUS */
case URB_FUNCTION_GET_STATUS_FROM_DEVICE:
m_DescriptorPacket->bRequest = USB_REQUEST_GET_STATUS;
ASSERT(Urb->UrbControlGetStatusRequest.Index == 0);
m_DescriptorPacket->wIndex.W = Urb->UrbControlGetStatusRequest.Index;
m_DescriptorPacket->bmRequestType.B = 0x80;
m_DescriptorPacket->wLength = 2;
break;
case URB_FUNCTION_GET_STATUS_FROM_INTERFACE:
m_DescriptorPacket->bRequest = USB_REQUEST_GET_STATUS;
ASSERT(Urb->UrbControlGetStatusRequest.Index != 0);
m_DescriptorPacket->wIndex.W = Urb->UrbControlGetStatusRequest.Index;
m_DescriptorPacket->bmRequestType.B = 0x81;
m_DescriptorPacket->wLength = 2;
break;
case URB_FUNCTION_GET_STATUS_FROM_ENDPOINT:
m_DescriptorPacket->bRequest = USB_REQUEST_GET_STATUS;
ASSERT(Urb->UrbControlGetStatusRequest.Index != 0);
m_DescriptorPacket->wIndex.W = Urb->UrbControlGetStatusRequest.Index;
m_DescriptorPacket->bmRequestType.B = 0x82;
m_DescriptorPacket->wLength = 2;
break;
/* SET ADDRESS */
/* SET CONFIG */
case URB_FUNCTION_SELECT_CONFIGURATION:
m_DescriptorPacket->bRequest = USB_REQUEST_SET_CONFIGURATION;
m_DescriptorPacket->wValue.W = Urb->UrbSelectConfiguration.ConfigurationDescriptor->bConfigurationValue;
m_DescriptorPacket->wIndex.W = 0;
m_DescriptorPacket->wLength = 0;
m_DescriptorPacket->bmRequestType.B = 0x00;
break;
/* SET DESCRIPTOR */
case URB_FUNCTION_SET_DESCRIPTOR_TO_DEVICE:
case URB_FUNCTION_SET_DESCRIPTOR_TO_INTERFACE:
case URB_FUNCTION_SET_DESCRIPTOR_TO_ENDPOINT:
UNIMPLEMENTED;
break;
/* SET FEATURE */
case URB_FUNCTION_SET_FEATURE_TO_DEVICE:
m_DescriptorPacket->bRequest = USB_REQUEST_SET_FEATURE;
ASSERT(Urb->UrbControlGetStatusRequest.Index == 0);
m_DescriptorPacket->wIndex.W = Urb->UrbControlGetStatusRequest.Index;
m_DescriptorPacket->bmRequestType.B = 0x80;
break;
case URB_FUNCTION_SET_FEATURE_TO_INTERFACE:
m_DescriptorPacket->bRequest = USB_REQUEST_SET_FEATURE;
ASSERT(Urb->UrbControlGetStatusRequest.Index == 0);
m_DescriptorPacket->wIndex.W = Urb->UrbControlGetStatusRequest.Index;
m_DescriptorPacket->bmRequestType.B = 0x81;
break;
case URB_FUNCTION_SET_FEATURE_TO_ENDPOINT:
m_DescriptorPacket->bRequest = USB_REQUEST_SET_FEATURE;
ASSERT(Urb->UrbControlGetStatusRequest.Index == 0);
m_DescriptorPacket->wIndex.W = Urb->UrbControlGetStatusRequest.Index;
m_DescriptorPacket->bmRequestType.B = 0x82;
break;
/* SET INTERFACE*/
case URB_FUNCTION_SELECT_INTERFACE:
m_DescriptorPacket->bRequest = USB_REQUEST_SET_INTERFACE;
m_DescriptorPacket->wValue.W = Urb->UrbSelectInterface.Interface.AlternateSetting;
m_DescriptorPacket->wIndex.W = Urb->UrbSelectInterface.Interface.InterfaceNumber;
m_DescriptorPacket->wLength = 0;
m_DescriptorPacket->bmRequestType.B = 0x01;
break;
/* SYNC FRAME */
case URB_FUNCTION_SYNC_RESET_PIPE_AND_CLEAR_STALL:
UNIMPLEMENTED;
break;
default:
UNIMPLEMENTED;
break;
}
return Status;
}
//----------------------------------------------------------------------------------------
VOID
STDMETHODCALLTYPE
CUSBRequest::GetResultStatus(
OUT OPTIONAL NTSTATUS * NtStatusCode,
OUT OPTIONAL PULONG UrbStatusCode)
{
//
// sanity check
//
PC_ASSERT(m_CompletionEvent);
//
// wait for the operation to complete
//
KeWaitForSingleObject(m_CompletionEvent, Executive, KernelMode, FALSE, NULL);
//
// copy status
//
if (NtStatusCode)
{
*NtStatusCode = m_NtStatusCode;
}
//
// copy urb status
//
if (UrbStatusCode)
{
*UrbStatusCode = m_UrbStatusCode;
}
}
//-----------------------------------------------------------------------------------------
BOOLEAN
STDMETHODCALLTYPE
CUSBRequest::ShouldReleaseRequestAfterCompletion()
{
if (m_Irp)
{
//
// the request is completed, release it
//
return TRUE;
}
else
{
//
// created with an setup packet, don't release
//
return FALSE;
}
}
//-----------------------------------------------------------------------------------------
VOID
STDMETHODCALLTYPE
CUSBRequest::FreeQueueHead(
IN struct _QUEUE_HEAD * QueueHead)
{
PLIST_ENTRY Entry;
PQUEUE_TRANSFER_DESCRIPTOR Descriptor;
//
// sanity checks
//
ASSERT(m_DmaManager);
ASSERT(QueueHead);
ASSERT(!IsListEmpty(&QueueHead->TransferDescriptorListHead));
do
{
//
// get transfer descriptors
//
Entry = RemoveHeadList(&QueueHead->TransferDescriptorListHead);
ASSERT(Entry);
//
// obtain descriptor from entry
//
Descriptor = (PQUEUE_TRANSFER_DESCRIPTOR)CONTAINING_RECORD(Entry, QUEUE_TRANSFER_DESCRIPTOR, DescriptorEntry);
ASSERT(Descriptor);
//
// add transfer count
//
m_TotalBytesTransferred += (Descriptor->TotalBytesToTransfer - Descriptor->Token.Bits.TotalBytesToTransfer);
DPRINT("TotalBytes Transferred in Descriptor %p Phys Addr %x TotalBytesSoftware %lu Length %lu\n", Descriptor, Descriptor->PhysicalAddr, Descriptor->TotalBytesToTransfer, Descriptor->TotalBytesToTransfer - Descriptor->Token.Bits.TotalBytesToTransfer);
//
// release transfer descriptors
//
m_DmaManager->Release(Descriptor, sizeof(QUEUE_TRANSFER_DESCRIPTOR));
}while(!IsListEmpty(&QueueHead->TransferDescriptorListHead));
if (m_DescriptorPacket)
{
//
// release packet descriptor
//
m_DmaManager->Release(m_DescriptorPacket, sizeof(USB_DEFAULT_PIPE_SETUP_PACKET));
}
//
// release queue head
//
m_DmaManager->Release(QueueHead, sizeof(QUEUE_HEAD));
//
// nullify pointers
//
m_QueueHead = 0;
m_DescriptorPacket = 0;
}
//-----------------------------------------------------------------------------------------
BOOLEAN
STDMETHODCALLTYPE
CUSBRequest::IsQueueHeadComplete(
struct _QUEUE_HEAD * QueueHead)
{
PLIST_ENTRY Entry;
PQUEUE_TRANSFER_DESCRIPTOR Descriptor;
//
// first check - is the queue head currently active
//
if (QueueHead->Token.Bits.Active)
{
//
// queue head is active (currently processed)
//
return FALSE;
}
if (QueueHead->Token.Bits.Halted)
{
//
// error occured
//
DPRINT1("Found halted queue head %p\n", QueueHead);
DumpQueueHead(QueueHead);
//ASSERT(FALSE);
return TRUE;
}
//
// loop list and see if there are any active descriptors
//
Entry = QueueHead->TransferDescriptorListHead.Flink;
while(Entry != &QueueHead->TransferDescriptorListHead)
{
//
// obtain descriptor from entry
//
Descriptor = (PQUEUE_TRANSFER_DESCRIPTOR)CONTAINING_RECORD(Entry, QUEUE_TRANSFER_DESCRIPTOR, DescriptorEntry);
ASSERT(Descriptor);
if (Descriptor->Token.Bits.Active)
{
//
// descriptor is still active
//
return FALSE;
}
//
// move to next entry
//
Entry = Entry->Flink;
}
DPRINT("QueueHead %p Addr %x is complete\n", QueueHead, QueueHead->PhysicalAddr);
//
// no active descriptors found, queue head is finished
//
return TRUE;
}
//-----------------------------------------------------------------------------------------
ULONG
CUSBRequest::InternalCalculateTransferLength()
{
if (!m_Irp)
{
//
// FIXME: get length for control request
//
return m_TransferBufferLength;
}
//
// sanity check
//
ASSERT(m_EndpointDescriptor);
if (USB_ENDPOINT_DIRECTION_IN(m_EndpointDescriptor->EndPointDescriptor.bEndpointAddress))
{
//
// bulk in request
// HACK: Properly determine transfer length
//
return m_TransferBufferLength;//m_TotalBytesTransferred;
}
//
// bulk out transfer
//
return m_TransferBufferLength;
}
USB_DEVICE_SPEED
CUSBRequest::GetSpeed()
{
return m_Speed;
}
UCHAR
CUSBRequest::GetInterval()
{
if (!m_EndpointDescriptor)
return 0;
return m_EndpointDescriptor->EndPointDescriptor.bInterval;
}
//-----------------------------------------------------------------------------------------
NTSTATUS
NTAPI
InternalCreateUSBRequest(
PUSBREQUEST *OutRequest)
{
PUSBREQUEST This;
//
// allocate requests
//
This = new(NonPagedPool, TAG_USBEHCI) CUSBRequest(0);
if (!This)
{
//
// failed to allocate
//
return STATUS_INSUFFICIENT_RESOURCES;
}
//
// add reference count
//
This->AddRef();
//
// return result
//
*OutRequest = (PUSBREQUEST)This;
//
// done
//
return STATUS_SUCCESS;
}
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