Re: ThinkPad - suspend-to-RAM intel-x86 issues and tests

[David Brownlee <abs%absd.org@localhost>]

On Tue, 27 Nov 2018 at 08:27, Masanobu SAITOH <msaitoh%execsw.org@localhost> wrote:
>
>   Hi, David.
>
> On 2018/11/26 6:11, David Brownlee wrote:
> > I've bisected the changes against the github src copy, and it looks like the suspend/resume issue is related to the following commit:
> >
> > commit 0fe469276f49bf0dc003300e0b8a35a80b7b246d (HEAD)
> > Author: jdolecek <jdolecek%NetBSD.org@localhost>
> > Date:   Mon Oct 22 20:57:07 2018 +0000
> >
> >      enable MSI support where available, blatantly copied from jmcneill's msk(4)
> >
> > I tried building from HEAD with just that one commit reverted, and my T420s suspends and resumes again!
> >
> > iwn0 is still non responsive after resume and wm0 will not pick up an IP via dhcpcd, but the disk responds :-p
>
>   (Note that I'm not familiar with suspend/resume though...)
>
>   Our pci_suspend()/pci_resume() copy only first 16 bytes of each PCI
> config space. Other OSes copy some other control registers and
> MSI/MSI-X capability area.
>
>   Could you dump all PCI config space both before and after suspend with:
>
>         http://www.netbsd.org/~msaitoh/pcidump
>
> and put the two output somewhere? Diffing the two output will teach
> us what we have to do.
>
>   Thanks in advance.

Let me just install to a USB stick to give me a working filesystem
from which to run pcidump after resume :-p

David