AtaPortSetBusData function (irb.h)
The AtaPortSetBusData routine stores the data at Buffer in the indicated device's PCI configuration space at an offset that is specified in ConfigDataOffset.
Note
The ATA port driver and ATA miniport driver models may be altered or unavailable in the future. Instead, we recommend using the Storport driver and Storport miniport driver models.
ULONG AtaPortSetBusData(
PVOID ControllerExtension,
PVOID Buffer,
ULONG ConfigDataOffset,
ULONG BufferLength
);
ControllerExtension
[in] A pointer to the controller extension.
Buffer
[in] A pointer to the buffer that contains the data to write to the device's PCI bus configuration space.
ConfigDataOffset
[in] Specifies an offset into the device's PCI bus configuration data space where the data is updated.
BufferLength
[in] Specifies the length, in bytes, of the buffer that Buffer points to.
AtaPortSetBusData returns the amount of the data that was written in bytes.
AtaPortSetBusData completes a bitwise OR, one byte at a time, of the current PCI configuration space data with the new data in Buffer. Only those bits not indicated by DataMask are left untouched. The byte of data that follows ConfigDataOffset, therefore, is updated as follows:
ConfigDataOffest[i] =
(ConfigDataOffest[i] & ~DataMask[i]) |
(DataMask[i] & Buffer[i])
Requirement | Value |
---|---|
Target Platform | Desktop |
Header | irb.h (include Ata.h, Irb.h) |
Library | Pciidex.lib |