GET_LOCAL_HOST_INFO6 - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// 1394.h
typedef struct _GET_LOCAL_HOST_INFO6 {
ADDRESS_OFFSET CsrBaseAddress;
ULONG CsrDataLength;
PVOID CsrDataBuffer;
} GET_LOCAL_HOST_INFO6, *PGET_LOCAL_HOST_INFO6;
View the official Windows Driver Kit DDI referenceNo description available.
The GET_LOCAL_HOST_INFO6 structure contains the data returned by a REQUEST_GET_LOCAL_HOST_INFO request using u.GetLocalHostInformation.nLevel = GET_HOST_CSR_CONTENTS.
CsrBaseAddressSpecifies the base address to examine in the CSR. CsrBaseAddress.Off_High must be INITIAL_REGISTER_SPACE_HI. The possible values of CsrBaseAddress.Off_Low are as follows.
| CsrBaseAddress.Off_Low | Type of Data |
|---|---|
| SPEED_MAP_LOCATION | The current speed map. The bus driver converts this from big-endian to machine-native format before it returns the data. Note The new 1394 bus driver provided with Windows 7 does not support the SPEED_MAP_LOCATION flag in the REQUEST_GET_LOCAL_HOST_INFO request. The speed map is obsolete in the IEEE-1394a specification. |
| TOPOLOGY_MAP_LOCATION | The current topology map. The bus driver converts this from big-endian to machine-native format before it returns the data. |
CsrDataLengthSpecifies the length in bytes of the buffer that CsrDataBuffer points to.
CsrDataBufferPointer to the buffer where the bus driver returns the requested CSR data.
When submitted in a REQUEST_GET_LOCAL_HOST_INFO request, if the CsrDataLength is smaller than the size of the requested data, STATUS_INVALID_BUFFER_SIZE is returned. In this case, the correct buffer size is filled in the CsrDataLength member.