Re: PCI not restored correctly after suspend to ram

[Len Brown <len.brown-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>]

On Thu, 2004-03-18 at 03:35, Stefan Dösinger wrote:
> Hello list,
> I have the following problems with suspend to ram on my Acer Travelmate 803
> (Centrino) notebook:
> With the patch for radeon_driver.c(Xfree v. 4.4) I can suspend and resume my 
> notebook. After resume, the settings of most pci devices are not restored 
> correctly and the devices do not work. See the attached lspci_before_suspend 
> and lspci_after_suspend files for details.
> Devices not working are:
> *Soundcard(00:1f.5)
> *All devices on bus 02
> *The modem, but there's only a non-GPL driver available.
> 
> I can get most devices devies to work by setting the pci registers with setpci 
> after resume. I use the attached fixpci.sh script to do so. I can get my 
> soundcard, the ethernet card(02:02.0) and the wireless(02:04.0) to work.

02:04.0 Network controller: Intel Corp. PRO/Wireless LAN 2100 3B Mini
PCI Adapter (rev 04)

What wireless driver are you using?

The latest version of ipw2100 from http://ipw2100.sf.net saves and
restores pci config space across suspend, so this shouldn't be
necessary. (indeed, that is about all it does, so it needs some work)

Though when I disable that function and S3 suspend/resume my Toshiba,
the only thing that changes in the ipw2100's config space is the
interrupt line goes from 0b to ff.  Curious that your interrupt line
goes from 0a to 00, and that you have other changes too, including the
5th byte which goes from 16 to 00 -- which disables mastering -- surely
a deal killer.

#wireless lan
DEV=02:04.0
echo "Configuring $DEV"
$SETPCI -s $DEV  04.w=0x0116
$SETPCI -s $DEV  0c.w=0x4008
$SETPCI -s $DEV  10.w=0x6000
$SETPCI -s $DEV  12.w=0xd020
$SETPCI -s $DEV  3c.w=0x010a


> I use kernel 2.6.4 and xfree 4.4. I need X to soft-boot the VGA BIOS.
> I use the pci=nobios kernel options, pci=bios does not help here and it causes 
> crashes on boot under certain conditions




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