DOC: PCISetPhysicalCacheTypeRange() Parameters and Return Values (244665)

SUMMARY

The Windows 98 DDK incorrectly documents the use of the PCISetPhysicalCacheTypeRange function. Peripheral Component Interconnect (PCI) miniports use this function to mark memory ranges with particular attributes, such as cached or noncached.

Although the DDK correctly lists the third parameter as type MEMORY_CACHING_TYPE, the list of possible values is incorrect. The correct values for parameters of type MEMORY_CACHING_TYPE can be found in the Wdm.h file.

The DDK also incorrectly documents the return values. The return value for the PCISetPhysicalCacheTypeRange function is actually of type NTSTATUS, as defined in the Ntstatus.h file. A return value of STATUS_SUCCESS indicates that the service succeeded.

The corrected documentation for the PCISetPhysicalCacheTypeRange function is shown in the "More Information" section of this article.

ULONG PCISetPhysicalCacheTypeRange(
  PVOID pPhysAddress, 
  ULONG ulNumBytes, 
  MEMORY_CACHING_TYPE ulCacheType
);