SRIOV_GET_MMIO_REQUIREMENTS callback

Description

This callback function is not supported.

Gets the Memory-Mapped I/O space of the specified PCI Express SR-IOV Virtual Function (VF).

Parameters

Context [in]

A pointer to a driver-defined context.

VfIndex [in]

A zero-based index of the VF to which this read operation applies.

BlockId [in]

A number identifying the block to be read. This is defined by the provider of the PF driver.

Buffer [out]

A pointer to a buffer that receives the data read from the VF's MMIO space.

Length [in]

The length in bytes of this read operation.

Return value

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

Prototype

SRIOV_GET_MMIO_REQUIREMENTS SriovGetMmioRequirements;

NTSTATUS SriovGetMmioRequirements(
  _In_  PVOID  Context,
  _In_  USHORT VfIndex,
  _In_  ULONG  BlockId,
  _Out_ PVOID  Buffer,
  _In_  ULONG  Length
)
{ ... }

typedef SRIOV_GET_MMIO_REQUIREMENTS *PSRIOV_GET_MMIO_REQUIREMENTS;

Remarks

This callback function is implemented by the physical function (PF) driver. It is invoked when the system wants to retrieve MMIO requirement of the specified VF.

(Question: How is this registered?)