Date: Mon, 06 Mar 2000 00:57:50 +0800 From: Peter Wemm <peter@netplex.com.au> To: Mark Ovens <mark@ukug.uk.freebsd.org> Cc: Doug Rabson <dfr@nlsystems.com>, questions@freebsd.org, current@freebsd.org Subject: Re: Modem no longer found after u/g to 4.0-current - help Message-ID: <20000305165750.47A711CD7@overcee.netplex.com.au> In-Reply-To: Message from Mark Ovens <mark@ukug.uk.freebsd.org> of "Sun, 05 Mar 2000 16:10:47 GMT." <20000305161047.B211@parish>
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Mark Ovens wrote:
> On Sun, Mar 05, 2000 at 04:04:59PM +0000, Doug Rabson wrote:
> > On Sun, 5 Mar 2000, Mark Ovens wrote:
> >
> > > On Sun, Mar 05, 2000 at 01:04:23PM +0000, Doug Rabson wrote:
> > > > Could you send me the output of pnpinfo. I think we are missing a PnP I
D
> > > > in the sio driver.
> > > >
> > >
> > > The line I've added to sio.c is:
> > >
> > >
> > > {0x3024a341, NULL}, /* PMC2430 - Pace 56 Voice Internal Modem */
> >
> > Does the modem work with this addition? If so, I'll commit the change.
> >
>
> Yes :)
>
> sio2: <Pace 56 Voice Internal Plug & Play Modem> at port 0x3e8-0x3ef irq 5 on
isa0
> sio2: type 16550A
Heh, it's already committed. (oops! :-)
> Why did it work before though, under 3.x, without this line in sio.c?
The PNP bios preconfigured it and left it laying around in port space,
so the old-style isa probes "found" it there.
Under 4.0, the isa code is much more pnp centric. It was possible for an
isa probe to find a "stray" device and then for the PNP device id to match
and then fail due to resource conflicts. So, it disables the programmable
cards first so this double probing cannot happen. It also means that it
needs to know the PNP id's for supported pnp hardware. Making this more
user tweakable is on the TODO list.
Cheers,
-Peter
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