SRIOV_QUERY_PROBED_BARS callback

Description

Queries the data read from the physical function's (PF) base address registers (BARs) if the value -1 were written to them first.

Parameters

Context [in]

A pointer to a driver-defined context.

BaseRegisterValues [out]

A pointer to an array of variables that is bounded by the number of BARs in a PCI device.

Return value

Return STATUS_SUCCESS if the operation succeeds. Otherwise, return an appropriate NTSTATUS error code.

Prototype

SRIOV_QUERY_PROBED_BARS SriovQueryProbedBars;

NTSTATUS SriovQueryProbedBars(
  _In_  PVOID  Context,
  _Out_ PULONG BaseRegisterValues
)
{ ... }

typedef SRIOV_QUERY_PROBED_BARS *PSRIOV_QUERY_PROBED_BARS;

Remarks

This callback function is implemented by the physical function (PF) driver. It is invoked when the system wants to get base address register values.

The PF driver registers its implementation by setting the QueryProbedBars member of the SRIOV_DEVICE_INTERFACE_STANDARD, configuring a WDF_QUERY_INTERFACE_CONFIG structure, and calling WdfDeviceAddQueryInterface.