Method for host protection during hot swap in a bridged, pipelined network
AssigneeMotorola, Inc.
InventorMark Huth
Life of this patent
Estimating the term…
Abstract
In a bridged, pipelined network (FIG. 1), a network-to-host bridge (140) identifies the address space of a host computer (FIG. 2) as not being contained within the host computer memory space (120). During the removal of the host computer (100) and its replacement by a new host computer, the network-to-host bridge (140) momentarily locks out traffic (FIG. 3, step 320) in order to disable peripheral components (FIG. 1, 160, 180) from initiating bus transactions. When the new host computer is installed (FIG. 3, step 320) and the bus lockout is removed (step 340), the new host memory area is protected from direct memory access transactions which were stored in the bus hierarchy during the host computer swap.
Claims18
In a pipelined network, a method for host computer memory space protection during a hot swap of said host computer, comprising:
- determining that transactions addressed to a location within said host computer memory space can degrade performance of said host computer;
- modifying contents of a bridge window register controlled by said host computer to designate an address range of said host computer memory space as corresponding to a location outside of said host computer memory space;
- determining that said transactions addressed to said host computer memory space should no longer occur;
- and
- modifying said address range of said bridge window register to designate a new address range of said host computer as corresponding to a location within said host computer memory space.
Dependencies are inferred from the claim text.