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StorPortGetDeviceBase2 function (storport.h)

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The StorPortGetDeviceBase2 function is like StorPortGetDeviceBase, but the Flags parameter allows for additional optional behavior. Rather than returning a mapped base address, a status is returned and the caller provides a pointer to store the mapping.

Syntax

ULONG StorPortGetDeviceBase2(
  PVOID                 HwDeviceExtension,
  INTERFACE_TYPE        BusType,
  ULONG                 SystemIoBusNumber,
  STOR_PHYSICAL_ADDRESS Address,
  ULONG                 NumberOfBytes,
  BOOLEAN               InIoSpace,
  ULONG                 Flags,
  PVOID                 *BaseAddress
);

Parameters

HwDeviceExtension

Used to find port device extension.

BusType

Specifies the type of bus, such as EISA, MCA, or ISA.

SystemIoBusNumber

Specifies the IO bus for machines with multiple buses.

Address

The base device address to be mapped.

NumberOfBytes

The number of bytes for which Address is valid.

InIoSpace

Indicates an IO address.

Flags

Used to request different attributes when mapping BaseAddress. If Flags is zero, the mapping is non-cached read/write.

BaseAddress

A pointer to store the base address mapping in.

Return value

Returns a STOR_STATUS_xxx code.

Return code Description
STOR_STATUS_SUCCESS The extended function was successfully returned.
STOR_STATUS_INVALID_PARAMETER One of the Flags parameters is invalid.
STOR_STATUS_NOT_IMPLEMENTED The specified extended function is not implemented.

Requirements

Requirement Value
Header storport.h

See also