GET_LOCAL_HOST_INFO8 - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers 
// 1394.h

typedef struct _GET_LOCAL_HOST_INFO8 {
  USHORT MajorVersion;
  USHORT MinorVersion;
} GET_LOCAL_HOST_INFO8, *PGET_LOCAL_HOST_INFO8;

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Windows Driver Kit DDI reference (ns-1394-_get_local_host_info8)

_GET_LOCAL_HOST_INFO8 structure

Description

The GET_LOCAL_HOST_INFO8 structure contains the data returned by a REQUEST_GET_LOCAL_HOST_INFO request with u.GetLocalHostInformation.nLevel set to GET_HOST_DDI_VERSION.

Members

MajorVersion

The major version of the 1394 bus driver interface.

MinorVersion

The minor version of the 1394 bus driver interface.

Remarks

A client driver can determine whether the 1394 bus driver loaded in the IEEE 1394 driver stack is the new 1394 bus driver or the legacy 1394 bus driver. A new nLevel value has been added to the REQUEST_GET_LOCAL_HOST_INFO I/O request to return the version of the DDIs that the 1394 bus driver supports.

To determine whether the 1394 bus driver is the new 1394 bus driver or the legacy 1394 bus driver,

  1. The client driver must send the REQUEST_GET_LOCAL_HOST_INFO request with nLevel set to GET_HOST_DDI_VERSION. If the driver stack contains the new 1394 bus driver, the request returns a status value of STATUS_SUCCESS. Otherwise, the legacy 1394 bus driver returns a status value of STATUS_INVALID_PARAMETER.
  2. The client driver must also provide a pointer to a caller-allocated GET_LOCAL_HOST_INFO8 structure in u.GetLocalHostInformation.Information. Upon successful completion, the new 1394 bus driver (1394ohci.sys bus driver)sets the MajorVersion and MinorVersion members as follows.
    • BUS1394_DDI_MAJOR_VERSION: The major version of the 1394 bus driver interface.
    • BUS1394_DDI_MINOR_VERSION: The minor version of the 1394 bus driver interface.

View the official Windows Driver Kit DDI reference

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