Re: kern/38698: NMI during boot on Fujitsu-Siemens Lifebook S-4546

[David Young <dyoung%pobox.com@localhost>]

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>
Cc: gnats-bugs%NetBSD.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.
 
 Dave
 
 -- 
 David Young             OJC Technologies
 dyoung%ojctech.com@localhost      Urbana, IL * (217) 278-3933 ext 24