[haiku-development] Re: harddisk access
- From: Marcus Overhagen <marcusoverhagen@xxxxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Wed, 25 Jul 2007 14:01:16 +0200 (CEST)
Stephan Assmus <superstippi@xxxxxx> wrote:
> Hi Euan,
>
> Euan Kirkhope wrote (2007-07-25, 12:37:46 [+0200]):
> > I've looked at this also when trying to fix an IDE DMA issue with my
> > desktop chipset. Couldn't really figure it out at all, and I was only at
>
> > the kernel level!
>
> I appear to have the same problem with my chipset. Luckily, ZETA apparently
> tries to re-read after DMA timeouts, whereas Haiku goes into KDL
> eventually, with "Device timeout" panics. Would be great if this was fixed.
While I have never seen haiku panic that way, we do indeed have bugs
in the DMA handling. Even vmware complains, and haiku does a couple of
useless device resets because DMA inside vmware is failing.
http://dev.haiku-os.org/ticket/1176
http://dev.haiku-os.org/ticket/985
I added some dprintf info in
http://svn.berlios.de/viewcvs/haiku?rev=19990&view=rev
I really tried to find the root cause for about two days, but the IDE
code is really crude, and then I gave up (back in January).
> The problem seems to depend on how many harddrives I connect. With one PATA
>
> drive, I can boot and use Haiku. With an additional SATA drive (in IDE
> compat mode), I can boot and use ZETA from the SATA drive, but I get tons
> of IDE DMA timeouts after a couple of minutes use. Windows would only
> install with the lonely PATA drive in place, and it doesn't boot as soon as
I have a similar problem. With Haiku, and with Windows.
> the SATA drive is connected. With another SATA drive and no PATA drive, I
> can barely use ZETA, because the DMA timeouts get really bad. I can boot
I'm not using zeta.
> Haiku from that drive, but when it tries to write back the pages (sync)
> everything file related freezes and then I get the KDLs with the Device
> timeout errors. With the first SATA drive as only drive, I can use ZETA
no kdl here, but the same proble,.
> fine, but Haiku doesn't boot because BFS produces a read-error during boot,
> so that it doesn't even find the boot partition... I think my chipset or
> rather the BIOS is really bad :-\
What system do you use?
regards
Marcus
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