bulkio.h File Reference

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Classes
struct	XhciBulkTransfer
class	XhciBulkRing

Enumerations
enum class	XhciBulkMechanism : UCHAR { NoData , Immediate , DoubleBuffer , Dma }
enum class	XhciBulkCancel : UCHAR { Idle , Armed , CancelRoutinePending , Done }

Functions
struct	DECLSPEC_ALIGN (8) XhciBulkStage

Enumeration Type Documentation

XhciBulkCancel

enum class XhciBulkCancel : UCHAR

strong

Cancel handshake state of a request owned by a bulk ring.

Enumerator
Idle
Armed
CancelRoutinePending
Done

Definition at line 24 of file bulkio.h.

{
    Idle,
    Armed,
    CancelRoutinePending,
    Done
};

XhciBulkMechanism

enum class XhciBulkMechanism : UCHAR

strong

How a bulk or interrupt request reaches the hardware.

Enumerator
NoData
Immediate
DoubleBuffer
Dma

Definition at line 15 of file bulkio.h.

{
    NoData,
    Immediate,
    DoubleBuffer,
    Dma
};

Function Documentation

DECLSPEC_ALIGN()

struct DECLSPEC_ALIGN

(

8

)

One TD on a bulk ring, kept in ring memory. Its address with the endpoint type in bits 1:0 is the Event Data value.

< Bumped per use; upper Event Data dword on 32 bit

< Reserved for Link TRBs, not linked yet

< Filled and left through a Link TRB

< One past the last TRB in LastSegment

Definition at line 1 of file bulkio.h.

{
    ULONG Signature;
    ULONG Generation;           
    BOOLEAN InUse;
    BOOLEAN OnHardware;
    BOOLEAN FreeMdl;
    XhciTransferRing* Ring;
    XhciBulkTransfer* Transfer;
    LIST_ENTRY FreeSegments;    
    LIST_ENTRY UsedSegments;    
    ULONG Size;
    PMDL Mdl;
    PSCATTER_GATHER_LIST SgList;
    PUCHAR Buffer;
    XhciDmaBuffer* DoubleBuffer;
    ULONG BurstTrbBudget;
    ULONG TrbsReserved;
    ULONG TrbsWritten;
    XhciDmaBuffer* FirstSegment;
    ULONG FirstIndex;
    XhciDmaBuffer* LastSegment;
    ULONG EndIndex;             
};