detaching devices in kernel - comp.os.plan9

Message from discussion detaching devices in kernel

presotto

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More options Oct 4 2002, 2:55 pm

Newsgroups: comp.os.plan9

From: preso...@plan9.bell-labs.com

Date: Fri, 4 Oct 2002 18:48:31 GMT

Local: Fri, Oct 4 2002 2:48 pm

Subject: Re: [9fans] detaching devices in kernel

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It would be a control message to the appropriate device that in turn
calls the devtab[whatever]->config routine. The first argument is
0 or 1, meaning unconfigure or configure. Look at etherconfig in
bitsy/devether.c. Its already in devtab, but noone uses it except
bitsy/devpcmcia.c. I was going to make it a bit more universal but
it was just at the time pb was doing the pccard interface for the
pc and I got deflected. I'ld like the pcmcia/pccard interface on the
pc's to work the same way as the one in the bitsy. Maybe in my next
lifetime or maybe someone out there will decide its a good idea and
find the time.

[ Attached Message ]

From:	Ronald G Minnich <rminn...@lanl.gov>
To:	<9f...@cse.psu.edu>
Date:	Fri, 4 Oct 2002 12:38:41 -0600 (MDT)
Local:	Fri, Oct 4 2002 2:38 pm
Subject:	Re: [9fans] detaching devices in kernel

On Fri, 4 Oct 2002 preso...@plan9.bell-labs.com wrote:

> Once the device is notices, it's there forever. The exception is
> the bitsy were we've started putting in stuff to take out pccards.
> We need to move that work everywhere, just haven't gotten around
> to it.

thanks for the clarification.

What would be the process by which a device is removed. A new function in
the interface (detach?) or some sequence of existing functions?

ron

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