procbuspci
Procbuspci is a term used to describe the interface and accompanying software and hardware components that connect a processor bus to a PCI bus within a computer system. It is most commonly encountered in embedded platforms and older PC architectures, where a dedicated processor-to-PCI bridge is required to allow the CPU to initiate transactions on PCI devices and to manage PCI configuration space access.
The typical procbuspci implementation includes a hardware bridge (or integrated chipset function) that translates processor-bus requests
Software support is generally provided by an operating system's PCI subsystem or a firmware/BIOS module. The
Notes: the exact definition and implementation of procbuspci vary by vendor and platform, so documentation should