The IDE_CONTROLLER_INTERFACE structure is used to pass controller configuration information between the port driver and the miniport driver.

typedef struct _IDE_CONTROLLER_ INTERFACE {
  USHORT  Version;
  USHORT  Reserved;
  ULONG  ControllerExtensionSize;
  ULONG  ChannelExtensionSize;
  ULONG  AlignmentMask;
  IDE_CHANNEL_INIT  AtaChannelInitRoutine;
  IDE_CHANNEL_ENABLED  AtaControllerChannelEnabled;
  IDE_TRANSFER_MODE_SELECT  AtaControllerTransferModeSelect;
  IDE_ADAPTER_CONTROL  AtaAdapterControl;
} IDE_CONTROLLER_ INTERFACE, *PIDE_CONTROLLER_ INTERFACE;

Members

Version

The port driver sets this field to indicate the version of the port driver. The port driver sets the version to sizeof(IDE_CONTROLLER_INTERFACE). The miniport driver should verify that the version is greater than or equal to the one it is using.

Reserved

Reserved for future use. The miniport driver shall not use this field.

ControllerExtensionSize

Specifies the size in bytes required by a miniport driver for its controller device extension.

ChannelExtensionSize

Specifies the size in bytes required by a miniport driver for its per-channel device extension.

AlignmentMask

Contains a mask indicating the alignment restrictions for buffers required by the HBA for transfer operations. Valid mask values are also restricted by characteristics of the memory managers on different versions of Windows. Under Windows 2000 and Windows XP, the valid mask values are 0 (byte-aligned), 1 (word-aligned), 3 (DWORD-aligned) and 7 (double DWORD-aligned). The miniport driver should set this mask if the HBA supports scatter/gather.

AtaChannelInitRoutine

Pointer to the miniport’s AtaChannelInitialize routine. The miniport needs to set this entry point only if it supports the Channel Interface.

AtaControllerChannelEnabled

Pointer to the miniport’s AtaControllerChannelEnabled routine. This is an optional entry point.

AtaControllerTransferModeSelect

Pointer to the miniport’s AtaControllerTransferModeSelect routine. This is an optional entry point.

AtaAdapterControl

Pointer to the miniport’s AtaControllerAdapterControl routine. This is a required entry point.

Comments

Requirements

Headers: Declared in Irb.h. Include Irb.h.

See Also