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RtGetBusDataByOffset (iwin32)
INtime SDK v6 > About INtime > Alternate APIs > iwin32 API > iwin32 API > RtGetBusDataByOffset (iwin32)

Reads configuration data from PCI space.

ULONG RtGetBusDataByOffset(
    BUS_DATA_TYPE BusDataType,
    ULONG BusNumber,
    ULONG SlotNumber,
    PVOID pBuffer,
    ULONG Offset,
    ULONG Length
);

Parameters

BusDataType
Type of bus data to retrieve. Currently, its value must be PCIConfiguration.
BusNumber
Zero-based number of the bus in the system.
SlotNumber
Logical slot number.
pBuffer
Pointer to a caller-supplied buffer that receives configuration data. Since currently only PCI configuration data can be obtained, the buffer contains all or part of the PCI_COMMON_CONFIG data type.
Offset
Offset in PCI_COMMON_CONFIG to start reading from.
Length
Number of bytes to read.

Remarks

Only PCI configuration data is available.

Return Values

The number of bytes actually read. Special values include:

0 (zero)
The specified PCI bus does not exist.
2
The specified PCI bus exists, but the given slot has no device. The only value returned in the PCI_COMMON_CONFIG structure is the value PCI_INVALID_VENDOR_ID in the VendorID.

Requirements

Versions Defined in Include Link to
INtime 3.0 intime/rt/include/iwin32.h iwin32.h iwin32.lib

Note

This function operates in the real-time portion of your application.

See Also

RtSetBusDataByOffset, RtTranslateBusAddress, iwin32 API, iwin32 Overview