Thread (50 messages) 50 messages, 8 authors, 2004-01-19

Re: multiple separate pci bridges ...

From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2004-01-06 07:56:05

Mmm, i understand that the 2.6.x pci domain will make this not
necessary. I might be wrong though.
What do those register actually do ? Is there a spec of that
host bridge I can download somewhere ?
quoted
	If you insert pci cards which contain bridges on them,
	they only work on the bus 0 slots...
bus 1 is used as an agp bus anyway, and i doubt there are many agp
graphic cards out there with pci bridges on them. When i inserted my
Appian Jeronimo 2000 in that board, it refused to powerup at all, but
then, maybe it is drawing too much power or something. After all, it has
a 3dlabs gamma and two permedia3 on it.
quoted
	Do you have something like ppcboot or uboot starting
	your system or just a kernel? If you are using a real
Well, there is a customized SmartFirmware OpenFirmware on the board. I
even have (non-free though) access to the source of it. The board is
mostly a CHRP design.
It has an x86 BIOS emulator for running the firmwares of the video cards
?
	boot rom, you could try initializing the p2p registers
quoted
	by hand, then booting...
The Firmware guy told me don't touch it though.
quoted
	I'm hoping to work on this in the next few days.
Ok, great.

Friendly,

Sven Luther
--
Benjamin Herrenschmidt [off-list ref]


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