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Sample Drivers by Features

You can also refer to the samples to find out how to use specific KMDF features. Table 3 lists the samples that support each fundamental feature.

Table 3 KMDF Feature Support in Samples

KMDF Feature

Sample

Buffered I/O

Ndisprot

Child device enumeration

OsrUsbFx2, Toaster bus

Collection

PCIDRV, Toaster bus

Direct I/O

Ramdisk

DMA

AMCC5933, PCIDRV, PLX9x5x

DPC

PCIDRV, PLX9x5x

Event tracing

AMCC5933, NoPnp, OxrUsbFx2, PCIDRV

Functional device object (FDO interface

All samples

File object

NonPnP

Filter driver

Firefly, Kbfiltr

I/O request cancellation

Echo

I/O requests and I/O queues (serial/parallel/manual)

All samples

I/O target objects

1394, firefly, NdisEdge, OsrUsbFx2

Idle detection

PCIDRV, serial

In-process callback to handle events in caller’s thread context

NonPnP

Interrupt handling

PLX9x5x, Serial

Memory pool

All samples

METHOD_NEITHER I/O

NonPnP

Non-Plug and Play, NT 4.0 style device objects (also called control device objects)

Ndisprot

Physical Device object (PDO) interface

Kbfiltr, OsrUsbFx2/EnumSwitches, Toaster bus

Plug and Play device interface

AMCC5933, PCIDRV, PIX9x5x, Toaster function

Plug and Play hardware resources

PCIDRV, PLX9x5x, AMCC5933

Plug and Play query interfaces

Toaster bus

Power policy owner

PCIDRV

Preprocessing callbacks for IRP_MJ_FLUSH_BUFFER, IRP_MJ_QUERY_INFORMATION, and IRP_MJ_SET_INFORMATION

Serial

Raw PDO

Kbfiltr, OsrUsbFx2

Registry

Fakemodem, PCIDRV, Ramdis, Serial, Toaster bus

Self-managed I/O

Echo, PCIDRV

Symbolic links to device names

Fakemodem, Ramdisk

Synchronization scope

Echo

Timer objects

Echo

USB device support

OsrUsbFx2

Wake signal support

OsrUsbFx2, PCIDRV, Serial

Windows management instrumentation (WMI)

Firefly, PCIDRV, Serial, Toaster function

Work items

AMCC5933, PCIDRV

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