isoxfer.cpp File Reference

#include "xhcidrv.h"
#include <debug.h>

Include dependency graph for isoxfer.cpp:

Go to the source code of this file.

Macros
#define	NDEBUG

Functions
static BOOLEAN NTAPI	XhciIsochStoppedCode (_In_ ULONG Code)
static BOOLEAN NTAPI	XhciIsochEndpointIn (_In_ const XhciTransferRing *Ring)
static ULONG NTAPI	XhciIsochFrames (_In_ ULONG Packets, _In_ ULONG PerFrame)
static ULONG NTAPI	XhciIsochPacketLength (_In_ const XhciIsochTransfer *Transfer, _In_ ULONG Packet)
static XhciIsochStage *NTAPI	XhciIsochStageAt (_In_ XhciIsochTransfer *Transfer, _In_ ULONG Position)
static ULONG NTAPI	XhciIsochEsitPayload (_In_ const XhciTransferRing *Ring)
static BOOLEAN NTAPI	XhciIsochNeedsLinkGuard (_In_ const XhciTransferRing *Ring)
static struct _URB_ISOCH_TRANSFER *NTAPI	XhciIsochUrbOf (_In_ WDFREQUEST Request)
static ULONG NTAPI	XhciIsochCountList (_In_ const LIST_ENTRY *Head)
static VOID NTAPI	XhciIsochMoveList (_Inout_ PLIST_ENTRY Destination, _Inout_ PLIST_ENTRY Source)
static BOOLEAN NTAPI	XhciIsochIsActive (_In_ const LIST_ENTRY *Pending, _In_ const XhciIsochTransfer *Transfer, _In_ ULONG Sequence)
static VOID NTAPI	XhciIsochSkipEmpty (_In_ const SCATTER_GATHER_LIST *SgList, _Inout_ PULONG Element, _Inout_ PULONG Offset)
static VOID NTAPI	XhciIsochTakePiece (_In_ const SCATTER_GATHER_LIST *SgList, _Inout_ PULONG Element, _Inout_ PULONG Offset, _In_ ULONG Bytes, _Out_ PULONG64 Address, _Out_ PULONG Chunk)
static ULONG NTAPI	XhciIsochCountPieces (_In_ const SCATTER_GATHER_LIST *SgList, _In_ ULONG Element, _In_ ULONG Offset, _In_ ULONG Bytes)
static VOID NTAPI	XhciIsochAdvance (_In_ const SCATTER_GATHER_LIST *SgList, _Inout_ PULONG Element, _Inout_ PULONG Offset, _In_ ULONG Bytes)
static BOOLEAN NTAPI	XhciIsochSegmentHas (_In_ const XhciDmaBuffer *Segment, _In_ ULONG Start, _In_ ULONG OnePastEnd, _In_ ULONG64 Address)
static BOOLEAN NTAPI	XhciIsochStageHas (_In_ const XhciIsochStage *Stage, _In_ ULONG64 Address)
static XhciDmaBuffer *NTAPI	XhciIsochNextSegment (_In_ const XhciIsochStage *Stage, _In_ const XhciDmaBuffer *Segment)
static ULONG NTAPI	XhciIsochSegmentLimit (_In_ const XhciIsochStage *Stage, _In_ const XhciDmaBuffer *Segment)
static ULONG NTAPI	XhciIsochMatchBytes (_In_ const XhciTransferRing *Ring, _In_ ULONG Code, _In_ ULONG Length, _In_ ULONG Residual, _In_ ULONG Sum)
	_Requires_lock_held_ (Ring->m_Lock) XhciIsochStage *XhciIsochRing
	_Requires_lock_not_held_ (Ring->m_Lock) VOID XhciIsochRing

Variables
static const ULONG	XhciIsochTransferTag = 'hcsI'
static const ULONG	XhciIsochMaxInFlight = 5
static const ULONG	XhciIsochBufferRetryLimit = 3
static const ULONG	XhciIsochAsapDelay = 5
static const LONG	XhciIsochFrameWindow = 1024
static const ULONG	XhciIsochRestartFast = 1024
static const ULONG	XhciIsochRestartSlow = 255
static const ULONG	XhciIsochInterruptEvery = 0x7F
static const ULONG	XhciIsochWatchdogMs = 10000
static const ULONG	XhciIsochTrbBytesMax = 0x10000
static const ULONG	XhciIsochMaxPackets = 0xFFFF
static const USBD_STATUS	XhciIsochNotSet = (USBD_STATUS)0xFFFFFFFF
static const ULONG	XhciIsochBiasNow = 1
static const ULONG	XhciIsochBiasLate = 2
static const ULONG	XhciIsochReasonBadEventData = 0x101E
static const LONG	XhciIsochDoorbellRung = 0x01
static const LONG	XhciIsochOkToReclaim = 0x02
static const LONG	XhciIsochCanceled = 0x04
static const LONG	XhciIsochReclaimAck = 0x08
static const LONG	XhciIsochEmptyExpected = 0x10
static const LONG	XhciIsochLastFrameValid = 0x20
static const LONG	XhciIsochStoppedSeen = 0x40
static const LONG	XhciIsochWaitIdle = 0
static const LONG	XhciIsochWaitParked = 1
static const LONG	XhciIsochWaitArrived = 2
static const LONG	XhciIsochWaitAbandoned = 3

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 10 of file isoxfer.cpp.

Function Documentation

_Requires_lock_held_()

_Requires_lock_held_

(

Ring->

m_Lock

)

Gives back a stage's MDL and segments and frees its slot. Its list was returned already.

Finds the stage holding the TRB an event names, works out the bytes its TD moved and moves the stage to the TD's packet. TRUE with no stage means the ring was empty.

Definition at line 1290 of file isoxfer.cpp.

{
    XhciIsochStage* Stage;
 
    if (Transfer->StageCount == XhciIsochTransfer::StageSlots)
        return NULL;
 
    Stage = XhciIsochStageAt(Transfer, Transfer->StageCount);
    Transfer->StageCount++;
 
    RtlZeroMemory(Stage, sizeof(*Stage));
    Stage->InUse = TRUE;
    Stage->Transfer = Transfer;
    Stage->FirstPacket = 0xFFFFFFFE;
    Stage->LastPacket = 0xFFFFFFFE;
    Stage->NextPacket = 1;
    InitializeListHead(&Stage->FreeSegments);
    InitializeListHead(&Stage->UsedSegments);
    Stage->FirstSegment = Ring->m_Segment;
    Stage->LastSegment = Ring->m_Segment;
    Stage->ScanSegment = Ring->m_Segment;
    Stage->FirstIndex = Ring->m_EnqueueIndex;
    Stage->EndIndex = Ring->m_EnqueueIndex;
    Stage->ScanIndex = Ring->m_EnqueueIndex;
 
    return Stage;
}

_Requires_lock_not_held_()

_Requires_lock_not_held_

(

Ring->

m_Lock

)

Completes a request that was never cancelable.

Definition at line 1361 of file isoxfer.cpp.

{
    PDMA_ADAPTER Adapter;
    KIRQL OldIrql;
 
    if (SgList == NULL)
        return;
 
    /* Never under the ring lock: the HAL may run another DMA callback of this ring */
    Adapter = Ring->m_Controller->m_Buffers.DmaAdapter();
    KeRaiseIrql(DISPATCH_LEVEL, &OldIrql);
    Adapter->DmaOperations->PutScatterGatherList(Adapter, SgList, !XhciIsochEndpointIn(Ring));
    KeLowerIrql(OldIrql);
}

XhciIsochAdvance()

static VOID NTAPI XhciIsochAdvance ( _In_ const SCATTER_GATHER_LIST *  SgList, _Inout_ PULONG  Element, _Inout_ PULONG  Offset, _In_ ULONG  Bytes  )

static

Definition at line 281 of file isoxfer.cpp.

{
    while (Bytes != 0)
    {
        ULONG Left;
 
        XhciIsochSkipEmpty(SgList, Element, Offset);
        if (*Element >= SgList->NumberOfElements)
            return;
 
        Left = SgList->Elements[*Element].Length - *Offset;
        if (Left > Bytes)
            Left = Bytes;
 
        *Offset += Left;
        Bytes -= Left;
    }
}

Referenced by XhciIsochRing::LayoutStage().

XhciIsochCountList()

static ULONG NTAPI XhciIsochCountList ( _In_ const LIST_ENTRY *  Head )

static

Definition at line 155 of file isoxfer.cpp.

{
    const LIST_ENTRY* Entry;
    ULONG Count = 0;
 
    for (Entry = Head->Flink; Entry != Head; Entry = Entry->Flink)
        Count++;
 
    return Count;
}

Referenced by XhciIsochRing::LayoutStage().

XhciIsochCountPieces()

static ULONG NTAPI XhciIsochCountPieces ( _In_ const SCATTER_GATHER_LIST *  SgList, _In_ ULONG  Element, _In_ ULONG  Offset, _In_ ULONG  Bytes  )

static

Definition at line 255 of file isoxfer.cpp.

{
    ULONG64 Address;
    ULONG Chunk;
    ULONG Pieces = 0;
 
    while (Bytes != 0)
    {
        XhciIsochTakePiece(SgList, &Element, &Offset, Bytes, &Address, &Chunk);
        if (Chunk == 0)
            break;
 
        Bytes -= Chunk;
        Pieces++;
    }
 
    return (Pieces == 0) ? 1 : Pieces;
}

Referenced by XhciIsochRing::LayoutStage().

XhciIsochEndpointIn()

static BOOLEAN NTAPI XhciIsochEndpointIn ( _In_ const XhciTransferRing *  Ring )

static

Definition at line 65 of file isoxfer.cpp.

{
    return (Ring->m_Endpoint->Descriptor()->bEndpointAddress & USB_ENDPOINT_DIRECTION_MASK) != 0;
}

Referenced by _Requires_lock_not_held_(), XhciIsochRing::CompleteTd(), XhciIsochRing::EncodeStage(), and XhciIsochRing::SizeStage().

XhciIsochEsitPayload()

static ULONG NTAPI XhciIsochEsitPayload ( _In_ const XhciTransferRing *  Ring )

static

Max ESIT payload; a TD never carries more.

Definition at line 109 of file isoxfer.cpp.

{
    ULONG Payload = Ring->m_Endpoint->MaxEsitPayload();
 
    if (Payload == 0)
        Payload = Ring->m_Endpoint->MaxPacketSize();
 
    return Payload;
}

Referenced by XhciIsochRing::EstimateSegments(), and XhciIsochRing::LayoutStage().

XhciIsochFrames()

static ULONG NTAPI XhciIsochFrames ( _In_ ULONG  Packets, _In_ ULONG  PerFrame  )

static

Definition at line 74 of file isoxfer.cpp.

{
    return (Packets + PerFrame - 1) / PerFrame;
}

Referenced by XhciIsochRing::FlagMissedPackets(), XhciIsochRing::PrimeStage(), and XhciIsochRing::ScheduleStartFrame().

XhciIsochIsActive()

static BOOLEAN NTAPI XhciIsochIsActive ( _In_ const LIST_ENTRY *  Pending, _In_ const XhciIsochTransfer *  Transfer, _In_ ULONG  Sequence  )

static

TRUE when Transfer, with this intake number, is still on the active list.

Definition at line 182 of file isoxfer.cpp.

{
    const LIST_ENTRY* Entry;
 
    for (Entry = Pending->Flink; Entry != Pending; Entry = Entry->Flink)
    {
        if (CONTAINING_RECORD(Entry, XhciIsochTransfer, Link) == Transfer)
            return Transfer->Sequence == Sequence;
    }
 
    return FALSE;
}

Referenced by XhciIsochRing::CompleteTd(), XhciIsochRing::FinishExpiredIsoch(), and XhciIsochRing::RetireExpiredStages().

XhciIsochMatchBytes()

static ULONG NTAPI XhciIsochMatchBytes ( _In_ const XhciTransferRing *  Ring, _In_ ULONG  Code, _In_ ULONG  Length, _In_ ULONG  Residual, _In_ ULONG  Sum  )

static

Bytes a TD moved, given the running sum up to the TRB an ED = 0 event names.

Definition at line 374 of file isoxfer.cpp.

{
    switch (static_cast<XhciCompletionCode>(Code))
    {
        case XhciCompletionCode::MissedService:
            if (!Ring->m_Controller->m_Registers.MseLengthUsable())
                return Sum;
            break;
 
        case XhciCompletionCode::Stopped:
        case XhciCompletionCode::DataBufferError:
        case XhciCompletionCode::BabbleDetected:
        case XhciCompletionCode::IsochBufferOverrun:
        case XhciCompletionCode::StallError:
        case XhciCompletionCode::UsbTransactionError:
        case XhciCompletionCode::SplitTransactionError:
            break;
 
        case XhciCompletionCode::StoppedShortPacket:
            return Residual;
 
        case XhciCompletionCode::StoppedLengthInvalid:
        case XhciCompletionCode::NoPingResponse:
            return Sum;
 
        default:
            DPRINT1("Isoch DCI %lu: code %lu on a data TRB\n", Ring->m_Endpoint->Dci(), Code);
            return Sum;
    }
 
    /* QUIRK: a residual above the TRB length wraps the count */
    if (Residual > Length)
    {
        DPRINT1("Isoch DCI %lu: residual %lu above TRB length %lu, code %lu\n",
                Ring->m_Endpoint->Dci(), Residual, Length, Code);
    }
 
    return Sum + Length - Residual;
}

XhciIsochMoveList()

static VOID NTAPI XhciIsochMoveList ( _Inout_ PLIST_ENTRY  Destination, _Inout_ PLIST_ENTRY  Source  )

static

Definition at line 170 of file isoxfer.cpp.

{
    while (!IsListEmpty(Source))
        InsertTailList(Destination, RemoveHeadList(Source));
}

Referenced by XhciIsochRing::AllowReclaimOnCancel(), and XhciIsochRing::RecoverTransfers().

XhciIsochNeedsLinkGuard()

static BOOLEAN NTAPI XhciIsochNeedsLinkGuard ( _In_ const XhciTransferRing *  Ring )

static

Full speed device behind a TT on a controller that must not start a TD with a Link TRB.

Definition at line 124 of file isoxfer.cpp.

{
    const XHCI_SLOT_CONTEXT* Slot;
 
    if (!Ring->m_Controller->HasErrata(XhciErrata::IsochFsNoBareLinkTd) ||
        Ring->m_Device->Speed() != UsbFullSpeed)
    {
        return FALSE;
    }
 
    Slot = static_cast<const XHCI_SLOT_CONTEXT*>(Ring->m_Device->OutputContext(0));
    return Slot != NULL && Slot->TTHubSlotId != 0;
}

Referenced by XhciIsochRing::EstimateSegments(), and XhciIsochRing::LayoutStage().

XhciIsochNextSegment()

static XhciDmaBuffer *NTAPI XhciIsochNextSegment ( _In_ const XhciIsochStage *  Stage, _In_ const XhciDmaBuffer *  Segment  )

static

The segment the stage continues in after Segment, NULL after the last one.

Definition at line 347 of file isoxfer.cpp.

{
    if (Segment == Stage->LastSegment)
        return NULL;
 
    if (Segment->Link.Flink == &Stage->UsedSegments)
        return Stage->LastSegment;
 
    return CONTAINING_RECORD(Segment->Link.Flink, XhciDmaBuffer, Link);
}

XhciIsochPacketLength()

static ULONG NTAPI XhciIsochPacketLength ( _In_ const XhciIsochTransfer *  Transfer, _In_ ULONG  Packet  )

static

Definition at line 84 of file isoxfer.cpp.

{
    const struct _URB_ISOCH_TRANSFER* Urb = Transfer->Urb;
    ULONG End;
 
    End = (Packet + 1 < Transfer->PacketsInUrb) ? Urb->IsoPacket[Packet + 1].Offset : Transfer->BytesTotal;
    return End - Urb->IsoPacket[Packet].Offset;
}

Referenced by XhciIsochRing::FlagMissedPackets(), XhciIsochRing::LayoutStage(), XhciIsochRing::SizeStage(), and XhciIsochRing::WriteStage().

XhciIsochSegmentHas()

static BOOLEAN NTAPI XhciIsochSegmentHas ( _In_ const XhciDmaBuffer *  Segment, _In_ ULONG  Start, _In_ ULONG  OnePastEnd, _In_ ULONG64  Address  )

static

Definition at line 309 of file isoxfer.cpp.

{
    ULONG64 Base = (ULONG64)Segment->LogicalAddress.QuadPart;
 
    return Address >= Base + (ULONG64)Start * sizeof(XHCI_TRB) &&
           Address < Base + (ULONG64)OnePastEnd * sizeof(XHCI_TRB);
}

Referenced by XhciIsochStageHas().

XhciIsochSegmentLimit()

static ULONG NTAPI XhciIsochSegmentLimit ( _In_ const XhciIsochStage *  Stage, _In_ const XhciDmaBuffer *  Segment  )

static

Definition at line 363 of file isoxfer.cpp.

{
    return (Segment == Stage->LastSegment) ? Stage->EndIndex : Segment->Size / sizeof(XHCI_TRB);
}

XhciIsochSkipEmpty()

static VOID NTAPI XhciIsochSkipEmpty ( _In_ const SCATTER_GATHER_LIST *  SgList, _Inout_ PULONG  Element, _Inout_ PULONG  Offset  )

static

Definition at line 203 of file isoxfer.cpp.

{
    while (*Element < SgList->NumberOfElements && *Offset >= SgList->Elements[*Element].Length)
    {
        (*Element)++;
        *Offset = 0;
    }
}

Referenced by XhciIsochAdvance(), and XhciIsochTakePiece().

XhciIsochStageAt()

static XhciIsochStage *NTAPI XhciIsochStageAt ( _In_ XhciIsochTransfer *  Transfer, _In_ ULONG  Position  )

static

Definition at line 98 of file isoxfer.cpp.

{
    return &Transfer->Stages[(Transfer->StageHead + Position) % XhciIsochTransfer::StageSlots];
}

Referenced by _Requires_lock_held_(), XhciIsochRing::Ed1Event(), XhciIsochRing::FinishLostStages(), XhciIsochRing::ReleaseAllStages(), and XhciIsochRing::RetireExpiredStages().

XhciIsochStageHas()

static BOOLEAN NTAPI XhciIsochStageHas ( _In_ const XhciIsochStage *  Stage, _In_ ULONG64  Address  )

static

Definition at line 324 of file isoxfer.cpp.

{
    const LIST_ENTRY* Entry;
    ULONG Start = Stage->FirstIndex;
 
    for (Entry = Stage->UsedSegments.Flink; Entry != &Stage->UsedSegments; Entry = Entry->Flink)
    {
        const XhciDmaBuffer* Segment = CONTAINING_RECORD(Entry, XhciDmaBuffer, Link);
 
        if (XhciIsochSegmentHas(Segment, Start, Segment->Size / sizeof(XHCI_TRB), Address))
            return TRUE;
        Start = 0;
    }
 
    return XhciIsochSegmentHas(Stage->LastSegment, Start, Stage->EndIndex, Address);
}

XhciIsochStoppedCode()

static BOOLEAN NTAPI XhciIsochStoppedCode ( _In_ ULONG  Code )

static

Definition at line 54 of file isoxfer.cpp.

{
    return Code == static_cast<ULONG>(XhciCompletionCode::Stopped) ||
           Code == static_cast<ULONG>(XhciCompletionCode::StoppedLengthInvalid) ||
           Code == static_cast<ULONG>(XhciCompletionCode::StoppedShortPacket);
}

Referenced by XhciIsochRing::CompleteTd(), XhciIsochRing::Ed0Event(), and XhciIsochRing::Ed1Event().

XhciIsochTakePiece()

static VOID NTAPI XhciIsochTakePiece ( _In_ const SCATTER_GATHER_LIST *  SgList, _Inout_ PULONG  Element, _Inout_ PULONG  Offset, _In_ ULONG  Bytes, _Out_ PULONG64  Address, _Out_ PULONG  Chunk  )

static

Takes the next piece of at most Bytes, ending at an element end or 64 KB boundary (xHCI 6.4.1.1). An exhausted list yields an empty piece at address 0.

Definition at line 222 of file isoxfer.cpp.

{
    ULONG64 Start;
    ULONG Left;
    ULONG Boundary;
 
    XhciIsochSkipEmpty(SgList, Element, Offset);
 
    if (*Element >= SgList->NumberOfElements)
    {
        *Address = 0;
        *Chunk = 0;
        return;
    }
 
    Start = (ULONG64)SgList->Elements[*Element].Address.QuadPart + *Offset;
    Left = SgList->Elements[*Element].Length - *Offset;
    Boundary = XhciIsochTrbBytesMax - (ULONG)(Start & (XhciIsochTrbBytesMax - 1));
 
    *Address = Start;
    *Chunk = min(min(Bytes, Left), Boundary);
    *Offset += *Chunk;
}

Referenced by XhciIsochRing::LayoutStage(), and XhciIsochCountPieces().

XhciIsochUrbOf()

static struct _URB_ISOCH_TRANSFER *NTAPI XhciIsochUrbOf ( _In_ WDFREQUEST  Request )

static

Definition at line 142 of file isoxfer.cpp.

{
    WDF_REQUEST_PARAMETERS Parameters;
 
    WDF_REQUEST_PARAMETERS_INIT(&Parameters);
    WdfRequestGetParameters(Request, &Parameters);
    return static_cast<struct _URB_ISOCH_TRANSFER*>(Parameters.Parameters.Others.Arg1);
}

Referenced by XhciIsochRing::TakeRequest().

Variable Documentation

XhciIsochAsapDelay

const ULONG XhciIsochAsapDelay = 5

static

Definition at line 17 of file isoxfer.cpp.

Referenced by XhciIsochRing::ScheduleStartFrame().

XhciIsochBiasLate

const ULONG XhciIsochBiasLate = 2

static

Definition at line 29 of file isoxfer.cpp.

Referenced by XhciIsochRing::FlagMissedPackets(), XhciIsochRing::ScheduleStartFrame(), and XhciIsochRing::WriteStage().

XhciIsochBiasNow

const ULONG XhciIsochBiasNow = 1

static

Definition at line 28 of file isoxfer.cpp.

Referenced by XhciIsochRing::FinishLostStages(), XhciIsochRing::OnRingStarved(), and XhciIsochRing::ScheduleStartFrame().

XhciIsochBufferRetryLimit

const ULONG XhciIsochBufferRetryLimit = 3

static

Definition at line 16 of file isoxfer.cpp.

Referenced by XhciIsochRing::NextTdSlot().

XhciIsochCanceled

const LONG XhciIsochCanceled = 0x04

static

Definition at line 37 of file isoxfer.cpp.

Referenced by XhciIsochRing::AllowReclaimOnCancel().

XhciIsochDoorbellRung

const LONG XhciIsochDoorbellRung = 0x01

static

Definition at line 35 of file isoxfer.cpp.

Referenced by XhciIsochRing::DoorbellRungSinceFill(), and XhciIsochRing::LayoutStage().

XhciIsochEmptyExpected

const LONG XhciIsochEmptyExpected = 0x10

static

Definition at line 39 of file isoxfer.cpp.

Referenced by XhciIsochRing::FinishLostStages(), XhciIsochRing::LayoutStage(), XhciIsochRing::OnRingStarved(), XhciIsochRing::PrimeStage(), and XhciIsochRing::WriteStage().

XhciIsochFrameWindow

const LONG XhciIsochFrameWindow = 1024

static

Definition at line 18 of file isoxfer.cpp.

Referenced by XhciIsochRing::ScheduleStartFrame().

XhciIsochInterruptEvery

const ULONG XhciIsochInterruptEvery = 0x7F

static

Definition at line 21 of file isoxfer.cpp.

Referenced by XhciIsochRing::LayoutStage().

XhciIsochLastFrameValid

const LONG XhciIsochLastFrameValid = 0x20

static

Definition at line 40 of file isoxfer.cpp.

Referenced by XhciIsochRing::FinishLostStages(), XhciIsochRing::LayoutStage(), XhciIsochRing::OnRingStarved(), and XhciIsochRing::PrimeStage().

XhciIsochMaxInFlight

const ULONG XhciIsochMaxInFlight = 5

static

Definition at line 15 of file isoxfer.cpp.

Referenced by XhciIsochRing::NextTdSlot().

XhciIsochMaxPackets

const ULONG XhciIsochMaxPackets = 0xFFFF

static

Definition at line 24 of file isoxfer.cpp.

Referenced by XhciIsochRing::TakeRequest().

XhciIsochNotSet

const USBD_STATUS XhciIsochNotSet = (USBD_STATUS)0xFFFFFFFF

static

Definition at line 25 of file isoxfer.cpp.

Referenced by XhciIsochRing::CompleteBatch(), XhciIsochRing::CompleteTd(), XhciIsochRing::FailStage(), XhciIsochRing::Finalize(), XhciIsochRing::FinishExpiredIsoch(), XhciIsochRing::NextTdSlot(), XhciIsochRing::ScheduleStartFrame(), and XhciIsochRing::TakeRequest().

XhciIsochOkToReclaim

const LONG XhciIsochOkToReclaim = 0x02

static

Definition at line 36 of file isoxfer.cpp.

Referenced by XhciIsochRing::AllowReclaimOnCancel().

XhciIsochReasonBadEventData

const ULONG XhciIsochReasonBadEventData = 0x101E

static

Definition at line 32 of file isoxfer.cpp.

Referenced by XhciIsochRing::Ed1Event().

XhciIsochReclaimAck

const LONG XhciIsochReclaimAck = 0x08

static

Definition at line 38 of file isoxfer.cpp.

Referenced by XhciIsochRing::RecoverTransfers().

XhciIsochRestartFast

const ULONG XhciIsochRestartFast = 1024

static

Definition at line 19 of file isoxfer.cpp.

Referenced by XhciIsochRing::ScheduleStartFrame().

XhciIsochRestartSlow

const ULONG XhciIsochRestartSlow = 255

static

Definition at line 20 of file isoxfer.cpp.

Referenced by XhciIsochRing::ScheduleStartFrame().

XhciIsochStoppedSeen

const LONG XhciIsochStoppedSeen = 0x40

static

Definition at line 41 of file isoxfer.cpp.

Referenced by XhciIsochRing::Ed0Event(), and XhciIsochRing::Ed1Event().

XhciIsochTransferTag

const ULONG XhciIsochTransferTag = 'hcsI'

static

Definition at line 13 of file isoxfer.cpp.

Referenced by XhciIsochRing::TakeRequest().

XhciIsochTrbBytesMax

const ULONG XhciIsochTrbBytesMax = 0x10000

static

Definition at line 23 of file isoxfer.cpp.

Referenced by XhciIsochTakePiece().

XhciIsochWaitAbandoned

const LONG XhciIsochWaitAbandoned = 3

static

Definition at line 47 of file isoxfer.cpp.

Referenced by XhciIsochRing::ReleaseParkedMapping(), and XhciIsochRing::SegmentsArrived().

XhciIsochWaitArrived

const LONG XhciIsochWaitArrived = 2

static

Definition at line 46 of file isoxfer.cpp.

Referenced by XhciIsochRing::SegmentsArrived().

XhciIsochWaitIdle

const LONG XhciIsochWaitIdle = 0

static

Definition at line 44 of file isoxfer.cpp.

Referenced by XhciIsochRing::ParkOnSegments(), and XhciIsochRing::SegmentsArrived().

XhciIsochWaitParked

const LONG XhciIsochWaitParked = 1

static

Definition at line 45 of file isoxfer.cpp.

Referenced by XhciIsochRing::ParkOnSegments(), XhciIsochRing::ReleaseParkedMapping(), and XhciIsochRing::SegmentsArrived().

XhciIsochWatchdogMs

const ULONG XhciIsochWatchdogMs = 10000

static

Definition at line 22 of file isoxfer.cpp.

Referenced by XhciIsochRing::AwaitRingEmpty().