WdfIoResourceListInsertDescriptor function (wdfresource.h)

Artikel
04/18/2022

[Applies to KMDF only]

The WdfIoResourceListInsertDescriptor method inserts a resource descriptor into a resource requirements list's logical configuration.

Syntax

NTSTATUS WdfIoResourceListInsertDescriptor(
  [in] WDFIORESLIST            ResourceList,
  [in] PIO_RESOURCE_DESCRIPTOR Descriptor,
  [in] ULONG                   Index
);

Parameters

[in] ResourceList

A handle to a framework resource-range-list object that represents a logical configuration of hardware resources for a device.

[in] Descriptor

A pointer to an IO_RESOURCE_DESCRIPTOR structure that describes a hardware resource.

[in] Index

A zero-based value that is used as an index into the set of resource descriptors that are already in the logical configuration that ResourceList specifies. To add a resource descriptor to the end of the logical configuration, specify WDF_INSERT_AT_END or the return value from WdfIoResourceListGetCount.

Return value

WdfIoResourceListInsertDescriptor returns STATUS_SUCCESS if the operation succeeds. Otherwise, this method might return one of the following values:

Return code	Description
STATUS_INVALID_PARAMETER	An invalid parameter was specified.
STATUS_ACCESS_DENIED	The driver was not allowed to add descriptors to the logical configuration.
STATUS_INSUFFICIENT_RESOURCES	The framework could not allocate space to store the descriptor.
STATUS_ARRAY_BOUNDS_EXCEEDED	The value that the Index parameter specifies was too large.

A system bug check occurs if the driver supplies an invalid object handle.

Remarks

The WdfIoResourceListInsertDescriptor method inserts the resource descriptor that the Descriptor parameter points to into the logical configuration that the ResourceList parameter specifies, in front of the resource descriptor that the Index value identifies.

To add a resource descriptor to the end of a logical configuration, specify WDF_INSERT_AT_END or the return value from WdfIoResourceListGetCount for the Index value. Alternatively, use the WdfIoResourceListAppendDescriptor method.

The framework copies the contents of the IO_RESOURCE_DESCRIPTOR structure into internal storage, so the driver routine that calls WdfIoResourceListInsertDescriptor can allocate the structure locally. After the driver calls WdfIoResourceListInsertDescriptor, the driver can reuse the IO_RESOURCE_DESCRIPTOR structure.

For more information about resource requirements lists and logical configurations, see Hardware Resources for Framework-Based Drivers.

Examples

The following code example initializes a resource descriptor and adds the descriptor to the end of a logical configuration.

IO_RESOURCE_DESCRIPTOR descriptor;

RtlZeroMemory(&descriptor, sizeof(descriptor));

descriptor.Option = 0;
descriptor.Type = CmResourceTypePort;
descriptor.ShareDisposition = CmResourceShareDeviceExclusive;
descriptor.Flags = CM_RESOURCE_PORT_IO|CM_RESOURCE_PORT_16_BIT_DECODE;
descriptor.u.Port.Length = 1;
descriptor.u.Port.Alignment = 0x01;
descriptor.u.Port.MinimumAddress.QuadPart = 0;
descriptor.u.Port.MaximumAddress.QuadPart = 0xFFFF;

status = WdfIoResourceListInsertDescriptor(
                                           logConfig,
                                           &descriptor,
                                           WDF_INSERT_AT_END
                                           );
if (!NT_SUCCESS(status)) {
    return status;
}

Requirements

Requirement	Value
Target Platform	Universal
Minimum KMDF version	1.0
Header	wdfresource.h (include Wdf.h)
Library	Wdf01000.sys (see Framework Library Versioning.)
IRQL	<=DISPATCH_LEVEL
DDI compliance rules	DriverCreate(kmdf), KmdfIrql(kmdf), KmdfIrql2(kmdf), KmdfIrqlExplicit(kmdf)

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