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Re: kern/38698: NMI during boot on Fujitsu-Siemens Lifebook S-4546
The following reply was made to PR kern/38698; it has been noted by GNATS.
From: David Young <dyoung%pobox.com@localhost>
To: Andreas Gustafsson <gson%gson.org@localhost>
Subject: Re: kern/38698: NMI during boot on Fujitsu-Siemens Lifebook S-4546
Date: Thu, 22 May 2008 13:21:43 -0500
On Wed, May 21, 2008 at 06:10:07PM +0300, Andreas Gustafsson wrote:
> David Young wrote:
> > Try commenting out line 759. Is there an NMI somewhere else, or does
> > it work ok?
> When I do that, I still get an NMI. The backtrace contains
> pccbb_chipinit+0x118, which corresponds to line 778:
> 777 /* Route functional interrupts to PCI. */
> 778 bcr = pci_conf_read(pc, tag, PCI_BRIDGE_CONTROL_REG);
> > Do your CardBus slots work?
> Yes, when I turn off PCI_COMMAND_PARITY_ENABLE and PCI_COMMAND_SERR_ENABLE,
> the CardBus slot works (there's only one of them).
Maybe the O2 Micro chips don't wire up the parity line. What if you turn
off PCI_COMMAND_PARITY_ENABLE, but you leave PCI_COMMAND_SERR_ENABLE on?
It really looks to me like a defect in the O2 Micro PCI implementation.
David Young OJC Technologies
dyoung%ojctech.com@localhost Urbana, IL * (217) 278-3933 ext 24
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