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From: Terry Lambert <tlambert@primenet.com>
Message-Id: <199710271843.LAA24331@usr04.primenet.com>
Subject: Re: a question about LKM
To: luigi@labinfo.iet.unipi.it (Luigi Rizzo)
Date: Mon, 27 Oct 1997 18:43:53 +0000 (GMT)
Cc: hackers@freebsd.org
In-Reply-To: <199710270641.HAA03134@labinfo.iet.unipi.it> from "Luigi Rizzo" at Oct 27, 97 07:41:11 am
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> I am looking at how ot make my audio driver an LKM.
> 
> I have seen some examples of LKMs but none of them uses interrupts.
> As a consequence, I am a bit unclear on what actions should be done
> at load time (and especially, at unload time) so that interrupts
> are properly delivered. For the attach part i can probably figure
> it out -- just do the standard attach() action -- but what for the
> detach ?

Look at the PCCARD code (it has to detach things as well).

The PCI stuff is probably best for the attach.

In effect, you implement a "probe on load".  This is somewhat
dangerous for non-PnP ISA cards, BTW.

The code in this area needs to be more orthoganal, IMO.


					Terry Lambert
					terry@lambert.org
---
Any opinions in this posting are my own and not those of my present
or previous employers.