On Fri, 2 Jan 2004, Sven Luther wrote:

Happy new year to you.

Happy New Year!

On Fri, Jan 02, 2004 at 03:03:43PM +1100, Benjamin Herrenschmidt wrote:

quoted

On Fri, 2004-01-02 at 05:11, Sven Luther wrote:

quoted

I am currently trying to port linux to the Pegasos 2, which
uses the Marvell Discovery 2 chip, and has two independent pci
controllers, of which one is faked as an agp bus. This is with a
modified 2.4.23 kernel from the linuxppc_2_4 branch.

Why "faked" ? It's actually fairly sane to have the AGP bus be a
separate PCI host controller... That's how it's done on pmacs.

There is some extra magic that needs to be done. In particular
interrupts need to be disabled before being able to write to the
config space of the agp bridge.

I seem to remember the upper layer already takes care of disabling interrupts?
Or am I mistaken?

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds

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