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Date:      Thu, 24 Mar 2011 13:15:28 -0400
From:      John Baldwin <jhb@freebsd.org>
To:        Steven Nikkel <steven_nikkel@ertyu.org>
Cc:        freebsd-hardware@freebsd.org
Subject:   Re: 8.x and Modems
Message-ID:  <201103241315.28747.jhb@freebsd.org>
In-Reply-To: <M.O.0.1103240822440.21311@ertyu.org>
References:  <3052ba363957ef179b4531ed0362d494.squirrel@www2.ertyu.org> <201103230817.07347.jhb@freebsd.org> <M.O.0.1103240822440.21311@ertyu.org>

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On Thursday, March 24, 2011 9:26:16 am Steven Nikkel wrote:
> On Wed, 23 Mar 2011, John Baldwin wrote:
> 
> > On Wednesday, March 23, 2011 1:34:54 am Steven Nikkel wrote:
> >> On Tue, 22 Mar 2011, John Baldwin wrote:
> >>>>> On Monday, March 21, 2011 5:17:19 pm steven_nikkel@ertyu.org wrote:
> >>>>>> I recently upgraded my trusty old 4.x system to 8.1 and the one little
> >>> bit
> >>>>>> I can't get working is the internal ISA modem in the system. On 4.x it
> >>> was
> >>>>>> detected automatically by the sio driver:
> >>>>>>
> >>>>>> /kernel: sio4: &lt;U.S. Robotics Sportster 33600 FAX/Voice Int&gt; at
> >>> port
> >>>>>> 0x3e8-0x3ef irq 5 on isa0
> >>>>>> /kernel: sio4: type 16550A
> >>>>>
> >>
> >> Ok, here's the proper verbose dump: http://pastebin.com/DJ1z0k4D
> >> I've set it back to PnP mode and taken out all the specific hints.
> >
> > Hmm, no helpful bootverbose messages in the pnp.c code it seems.
> >
> > Can you take a hand at adding printfs to sys/isa/pnp.c?  Specifically,
> > something like this:
> >
> > Index: pnp.c
> > ===================================================================
> > --- pnp.c	(revision 219740)
> > +++ pnp.c	(working copy)
> > @@ -743,10 +743,10 @@ pnp_isolation_protocol(device_t parent)
> > 					printf("A Normal-ISA-PnP card (%s).\n",
> > 					    pnp_eisaformat(id.vendor_id));
> > 			}
> > +#endif
> > 			if (bootverbose)
> > 				printf("Reading PnP configuration for %s.\n",
> > 				    pnp_eisaformat(id.vendor_id));
> > -#endif
> > 			error = pnp_read_resources(&resources, &space, &len);
> > 			if (error)
> > 				break;
> >
> > That should at least list each card it finds in a verbose boot.  If you get
> > a message showing your card, then the next step is probably to see if
> > pnp_read_resources() is failing.  If it is you'd want to narrow down where it
> > fails.  If not then you'd want to trace pnp_create_devices() to see if it
> > fails.
> >
> > Oh, and a 'devinfo -v' to make sure your device doesn't already exist might
> > be a good sanity check as well.
> >
> > -- 
> > John Baldwin
> >
> 
> I updated to 8.2 and patched pnp.c as you proposed. Here's the result:
> http://pastebin.com/AWpiBxRA
> 
> It is the modem that is causing those 'PnP device failed to report 
> resource data'
> and I don't see it appear in devinfo.

Yes, so the next step would be to instrument pnp_read_resources() to see
exactly where it is failing.

-- 
John Baldwin



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