Patent ID: 6240474
Filing Date: 2001-05-29
Classification: G06F

Abstract:
A method of transferring a data segment from a target device to a source device over an intermediate PCI bus arranged between said source device and said target device, in response to a source data request by said source device, said intermediate PCI bus being arranged for selectively coupling other devices together in a processing system, said method comprising:sending said source data request for said data segment from said source device to said target device over said intermediate PCI bus, said request including an address for said target device,a specified address for said source device and a transfer size for said data segment;releasing said intermediate PCI bus for use by said other devices after said target device has received said source data request;assuming a master device function by said target device upon completion of an acquisition of said data segment; andreturning said data segment from said target device to said source device, said target device being operable as a master device to complete said return of said data segment from said target device to said source device using said specified address of said source device and without waiting for a re-request for said data segment by said source device.