r255873: ahcich7: Timeout on slot 0 port 0 FLOODING kernel messages

[Pietro Cerutti]

On 2013-Sep-27, 05:57, Scott Long wrote:
> 
> On Sep 27, 2013, at 5:52 AM, Sergey V. Dyatko <sergey.dyatko at gmail.com> wrote:
> 
> >>> 
> >>> yes, these messages disappeared after revert 255870 and r255871
> >>> 
> >> 
> >> 
> >> Hi,
> >> 
> >> Nothing that I changes should have affected the ahci driver.  In
> >> fact, I tested this driver specifically during my development.  Can
> >> you confirm that you built both kernel and modules from a clean state?
> > 
> > [tiger at laptop]:/usr/src%svn st
> > M       sys/boot/i386/zfsboot/zfsboot.c
> > [tiger at laptop]:/usr/src%svn diff 
> > Index: sys/boot/i386/zfsboot/zfsboot.c
> > ===================================================================
> > --- sys/boot/i386/zfsboot/zfsboot.c     (revision 255873)
> > +++ sys/boot/i386/zfsboot/zfsboot.c     (working copy)
> > @@ -302,6 +302,7 @@
> >      * region in the SMAP, use the last 3MB of 'extended' memory as a
> >      * high heap candidate.
> >      */
> > +       high_heap_size = 0;
> >     if (bios_extmem >= HEAP_MIN && high_heap_size < HEAP_MIN) {
> >        high_heap_size = HEAP_MIN;
> >        high_heap_base = bios_extmem + 0x100000 - HEAP_MIN;
> > [tiger at laptop]:/usr/src%
> > 
> > nothing more. 
> > 
> 
> Yes, no local source changes, but are you loading the cam or ahci drivers
> a loadable modules that might be out of sync now, or did you use a short-
> cut for building your kernel, like NO_CLEAN?

I had the same problem with a clean src tree. After commenting out the
ahci line from my kernel conf file, I got these instead:

Sep 27 14:32:10 SN2000 kernel: ata3: setting up DMA failed
Sep 27 14:32:12 SN2000 kernel: ata3: FAILURE - zero length DMA transfer attempte

reverting those two commits solved the issue.

-- 
Pietro Cerutti
The FreeBSD Project
gahr at FreeBSD.org

PGP Public Key:
http://gahr.ch/pgp
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