On 19/01/15 16:17, Artyom Tarasenko wrote: >> Is there an "EBus bridge" PCI device similar to the PCI-to-ISA bridge? > > As physical devices there are integrated SBus-to-EBus and PCI-to-EBus bridges. > > But actually I may have been wrong about NVRAM always sitting on the > EBus: looking at the page 28 of "UltraSPARC™-IIi User's Manual" > (805-0087.pdf), I see that NVRAM, Serial and other controllers reside > in a "PC compatible SuperIO" chip which sits on a PCI bus.
There's definitely a PCI device for a PCI-EBus bridge that we discover during enumeration and attach to that (for example the EBus properties in OpenBIOS can be found in the attach callback for the bridge PCI device in drivers/pci.c). ATB, Mark.
