From owner-freebsd-current Wed May 7 04:22:21 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id EAA17470 for current-outgoing; Wed, 7 May 1997 04:22:21 -0700 (PDT) Received: from nlsystems.com (nlsys.demon.co.uk [158.152.125.33]) by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id EAA17463; Wed, 7 May 1997 04:21:54 -0700 (PDT) Received: from herring.nlsystems.com (herring.nlsystems.com [10.0.0.2]) by nlsystems.com (8.8.5/8.8.5) with SMTP id MAA08681; Wed, 7 May 1997 12:22:07 +0100 (BST) Date: Wed, 7 May 1997 12:22:07 +0100 (BST) From: Doug Rabson To: Michael Smith cc: bde@FreeBSD.ORG, current@FreeBSD.ORG Subject: Re: Adding ISA devices dynamically In-Reply-To: <199705070052.KAA15688@genesis.atrad.adelaide.edu.au> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-current@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk On Wed, 7 May 1997, Michael Smith wrote: > Doug Rabson stands accused of saying: > > > > Since I am adding devices dynamically, I generate new struct isa_devices > > with new device ids. Unfortunately, my new device ids are greater than > > NR_DEVICES and register_intr() fails for the new devices. Basically, we > > have a static limit for interrupting devices. > > Unless you were planning on adding support for shared interrupts (were > you?), there aren't going to be more than 16 ISA interrupts, ever. > > Whether it makes sense to reflect this, or to adopt some more complex but > extensible scheme isn't entirely obvious to me. I have given up for now and reserved a few slots for dynamic irq registration. Its still ugly though. -- Doug Rabson Mail: dfr@nlsystems.com Nonlinear Systems Ltd. Phone: +44 181 951 1891