Messages in this thread | | | Date | Fri, 25 Apr 2003 01:40:13 +0100 | From | Dave Jones <> | Subject | Re: [Patch?] SiS 746 AGP-Support |
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> I don't know, if the following changes are 'clean' but they give me a working > agpsupport for my SiS 746Fx based mobo. > > This (attempt) of a patch is against 2.4.21-rc1:
Might work fine as long as you have an agp2.0 card in the slot, but the minute you put a 3.0 (read as AGPx8) card in there, things are very likely to break.
I've not seen the specs for this chipset, but most of the AGP3 chipsets I've seen have a fallback mode in their register set which gets enabled as soon as you plug in an AGP2 card. These registers don't get enabled with an AGP3 card, instead you need to read from different registers, and in most cases, act completly different to decode aperture sizes etc.
The generic routines in 2.5 *might* work, but are untested on this chipset. 2.4 currently has no AGP3 support at all. Some folks did backport what I've done in 2.5 a while ago, but I would advise against merging it at this stage, as there is still work to be done there, including stability fixes. Right there are a number of possible problems which may include random memory corruption.
Dave
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