Re: ibm4xx pci (Re: IBM405GP/GPr OPB bus_space endian (powerpc/ibm4xx/dev/opb.c))

[Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>]

briggs%NetBSD.org@localhost wrote:

> "pchb" is, as I read it, "PCI - Host Bridge".  That means to me
> that it bridges between the PCI bus and a Host Bus (PLB, HT, whatever).

I think pchb(4) is a driver for PCI-Host Bridge found on PCI bus
on most ports. The PCI-HOST bridge is also configured on host local bus
during autoconf(9) (as I wrote in the previous post), but it requires
different driver which provides chipset specific pci(9) functions etc.
While they are the same device, having the same name for different
drivers is confusing, I think.

> I have no problem renaming it (as was done on some of the other evb*
> ports).

Was it really done on other ports?
AFAIK no port except evbppc had pchb at hostbus.

>  But I don't really see why it's confusing.

Didn't it cause shige's first question? ;-)
---
Izumi Tsutsui