Re: Next round of console patches

Alan Cox (alan@lxorguk.ukuu.org.uk)
Tue, 1 Sep 1998 15:08:43 +0100 (BST)


> I offered once to be the bunny. My problem was mainly PCI resource
> allocation: when writing 0xffffffff to a base register, the value returned
> by some chips (only graphics chips to my knowledge) does not reflect the
> space actually used.

Nod.

There is a chip table in the bttv driver giving which base register matches
what PCI id, and the code to walk the busses to find it. Perhaps that should
be extracted into a shared file and a flag set added (MTRR etc)
(drivers/char/bttv.c)

I've only got S3 databooks here to check on the mmio register spaces. Cirrus
Logic pdfs are on www.cirrus.com. Thats half of the worlds video cards covered
already 8)

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