Messages in this thread |  | | Date | Mon, 25 Mar 2002 21:26:22 +1100 | From | Eyal Lebedinsky <> | Subject | Re: 2.4.18: many IDE errors |
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Andre Hedrick wrote: > > On Sun, 24 Mar 2002, Eyal Lebedinsky wrote: > > > If I understand correctly, the basic answer is that this is not > > a driver issue, and not a general kernel (irq's etc.) either, but > > a true hardware problem. > > > > > > Andre Hedrick wrote: > > > > > > It is not a case of bad cables but maybe cable routing. > > > > I am not clear on what cable routing means. Can you elaborate? > > If you have many cable (note there are random ways to construct, odd/even) > You can get crosstalk (aka 0x51/0x84 kernel noise). These messages are > telling you the hardware checksum between the HOST and DEVICE failed. > The solution is to retry, and the driver does.
[explanation of rate backoff trimmed]
Yes, I see this happening, and I agree it is a good idea.
> > I know they come up ATA-5. Here are the relevant bootup messages: > > > > Uniform Multi-Platform E-IDE driver Revision: 6.31 > > ide: Assuming 33MHz system bus speed for PIO modes; override with > > idebus=xx > > VP_IDE: IDE controller on PCI bus 00 dev 39 > > VP_IDE: chipset revision 6 > > VP_IDE: not 100% native mode: will probe irqs later > > ide: Assuming 33MHz system bus speed for PIO modes; override with > > idebus=xx > > VP_IDE: VIA vt82c686b (rev 40) IDE UDMA100 controller on pci00:07.1 > > ide0: BM-DMA at 0xffa0-0xffa7, BIOS settings: hda:DMA, hdb:pio > > ide1: BM-DMA at 0xffa8-0xffaf, BIOS settings: hdc:DMA, hdd:DMA > > First disable unmasking VIA it makes a mess. :-/ > > This (CMD649) is a good HOST and Linux can deal nicely.
You mean IRQ unmasking? This is interesting. After bootup I see hda/c (on VP_IDE, ide0/1) having I/O support: 1 unmasking: 1 but hde/g/i/k (on CMD649, ide2/3/4/5) have: I/O support: 0 unmasking: 0 So VIA unmasking is NOT disabled (I will do so) but why is the CMD649 disabled if you say it is a good chipset?
-- Eyal Lebedinsky (eyal@eyal.emu.id.au) <http://samba.org/eyal/> - 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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