AtaPortGetDeviceBase - NtDoc
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headers
// irb.h
PVOID AtaPortGetDeviceBase(
[in] PVOID ChannelExtension,
[in] IDE_PHYSICAL_ADDRESS IoAddress,
[in] ULONG NumberOfBytes
);
View the official Windows Driver Kit DDI referenceNo description available.
The AtaPortGetDeviceBase routine returns a mapped logical base address that is used to communicate with an HBA.
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.
ChannelExtension [in]A pointer to the channel extension.
IoAddress [in]Specifies the base address to map.
NumberOfBytes [in]Specifies the size, in bytes, of the range that the mappings should cover. The value for this parameter can be obtained from the IdeAccessRange member of the IDE_MINIPORT_RESOURCES structure.
AtaPortGetDeviceBase returns a mapped logical base address if the operation succeeds. Otherwise, it returns NULL.
Miniport drivers must use logical addresses that have been mapped into system space by AtaPortGetDeviceBase instead of bus-relative addresses to communicate with its HBA. Calls to the AtaPort...Port/RegisterXxx routines require mapped logical addresses.