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Date: Sat, 7 Apr 2001 20:00:53 +0100
From: Tim Waugh <twaugh@redhat.com>
To: =?iso-8859-1?Q?G=E9rard_Roudier?= <groudier@club-internet.fr>
Cc: Michael Reinelt <reinelt@eunet.at>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Multi-function PCI devices
Message-ID: <20010407200053.B3280@redhat.com>
In-Reply-To: <3ACECA8F.FEC9439@eunet.at> <Pine.LNX.4.10.10104071043360.1085-100000@linux.local>
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In-Reply-To: <Pine.LNX.4.10.10104071043360.1085-100000@linux.local>; from groudier@club-internet.fr on Sat, Apr 07, 2001 at 11:04:38AM +0200
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On Sat, Apr 07, 2001 at 11:04:38AM +0200, G=E9rard Roudier wrote:

> Given your description, this board is certainly not a multi-fonction PCI
> device. Multi-function PCI devices provide separate resources for each
> function in a way that allows each function to be driven by separate
> software drivers.

Yes, but the vendor screwed it up (probably to save money).  This is
_very_ common.  It is very unusual to have a multifunction I/O card
that gets this right (in fact Lava is the only one I can think of
off-hand).

> Band-aiding the kernel code in order to cope with such brain-deaded
> hardware would be a pity, in my opinion. Burden must stay where it
> is deserved.

If we have to do this, then Gunther's approach (multifunc_quirks or
whatever) looks a lot better than having a separate driver for every
single multi-IO card.

Tim.
*/

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