Date: Thu, 4 Jun 1998 05:04:03 +0200 (MET DST) From: Luigi Rizzo <luigi@labinfo.iet.unipi.it> To: eivind@yes.no (Eivind Eklund) Cc: mike@smith.net.au, paterno@dsi.UNIFI.IT, freebsd-stable@FreeBSD.ORG Subject: Re: PnP support for if_ed, and more... Message-ID: <199806040304.FAA08620@labinfo.iet.unipi.it> In-Reply-To: <19980604004051.40689@follo.net> from "Eivind Eklund" at Jun 4, 98 00:40:32 am
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> On Wed, Jun 03, 1998 at 12:09:05PM -0700, Mike Smith wrote:
> > It's erroneous to use device-specific PnP ID's when the generic
> > fallback ID is available.
But this is not always the case: e.g. the OPTI931 audio card does not
seem to have a fallback ID in the PnP description . So in the end, i
think it is always better to use the specific PnP ID.
My experience with audio cards is that devices are sufficiently
different from each other to require the specific id's.
...
> > If you need more information on this (ie. you are interested in fixing
> > this) please let me know and I will point you in the appropriate
> > directions.
>
> The problem with this is that that info as far as I could tell isn't
> available through the FreeBSD PnP driver...
right. The current pnp support does not do a full scan of the PnP info,
only reads the vendor_id and serial number of the card. pnpinfo has the
code to extract more infor from the PnP configuration.
But i don't think it is worth the effort to implement a full scan of
the PnP info. What I think we would really need is a simple
mechanism (perhaps in userconfig) to list vendor_id's known to the
kernel, and map new id's to know ids.
Something like
boot> pnp ls id
0x3600630e CS4236
0x3000a865 Yamaha SA3
0x3109143e OPTi931
boot> pnp map 0x3500630e 0x3600630e
boot> pnp ls id
0x3600630e CS4236
0x3000a865 Yamaha SA3
0x3109143e OPTi931
0x3500630e --> mapped to 0x3600630e
Wouldn't be too hard to add (just set up a list of id's, to fill up with
DATA_SET in the kenrel, and modify userconfig to add the above
commands), and it is sufficiently flexible to add new 'compatible'
devices.
> Eivind, who added the original if_ed PnP code (port from sio).
Luigi, who added kernel PnP support :)
cheers
luigi
-----------------------------+--------------------------------------
Luigi Rizzo | Dip. di Ingegneria dell'Informazione
email: luigi@iet.unipi.it | Universita' di Pisa
tel: +39-50-568533 | via Diotisalvi 2, 56126 PISA (Italy)
fax: +39-50-568522 | http://www.iet.unipi.it/~luigi/
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