convert from system address to bus address

Hi ,
Is their any way in NT to convert a system physical address to Pci bus
specific physical address.
I mean the reverse of HalTranslateBusAddress.
regards
jeseem
mailto:xxxxx@hotmail.com

> Is their any way in NT to convert a system physical address to Pci bus

specific physical address.
I mean the reverse of HalTranslateBusAddress.

IoMapTransfer does this for the specified MDL.

Max