Messages in this thread | | | Date | Thu, 14 Mar 2002 11:14:16 +0100 | From | Vojtech Pavlik <> | Subject | Re: [patch] PIIX rewrite patch, pre-final |
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On Thu, Mar 14, 2002 at 10:48:10AM +0100, Daniela Engert wrote:
> >00..1f 586 > >20..2f 586a > >30..3f 586b > >40..46 586b 3040 silicon > >Has a bug where the preq# til ddack# bit must be cleared or can cause > >spontaneous reboots. > >47..4f 586b 3041 silicon > > True. I leave this particular setup to the BIOS which is supposed to > take care of such idiosyncrasies...
Unfortunately not all BIOSes do. I have at least two reported buggy BIOSES which set the bit even on the 3040 silicon.
> >> 0x3109 VT8233c x x x x x x x - - > >> 0x3147 VT8233a x x x x x x x x - > >> > >> known bugs: > >> - all: no host side cable type detection. > > > >Not true, for the UDMA100 and UDMA133 capable ones, there are defined > >bits in the UDMA_TIMING register. Not all BIOSes use those, though. > > Interesting. None of the user reports ever indicated that.
It's possible the BIOSes don't set the bits. My driver also checks if the BIOS enabled UDMA >= 44MB/s on these chips, assuming 80 cable as well.
Anyway, the docs state the bits should reflect the cable presence.
> >> -------------------------------------------------------------------------------- > >> 0x10DE Nvidia > >> 0x01BC nForce x x x x x x x - - > >> > >> known bugs: > >> - nForce: no host side cable type detection. > > > >Do you have any info on this one? I'd really like to have a Linux driver > >for it ... > > I have no docs, but my father's machine has this chip built in :-) My > driver is running it just fine. In fact, this is a clone of the ATA/100 > capable AMD IDE chip cell with all config register addresses shifted up > by 0x10.
Thanks for this info. :) I think I'll add the support to my AMD driver. Could you by any chance send me a PCI config space dump of the IDE controller there?
> I'm looking forward to the new ATI chipset, let's bet where their IDE > cell is licenced from :-)
I don't think it'll be Intel. I bet on VIA ...
-- Vojtech Pavlik SuSE Labs - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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