From owner-freebsd-hackers Wed Oct 31 10:54: 3 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from freebie.xs4all.nl (freebie.xs4all.nl [213.84.32.253]) by hub.freebsd.org (Postfix) with ESMTP id AA1D537B401 for ; Wed, 31 Oct 2001 10:53:58 -0800 (PST) Received: (from wkb@localhost) by freebie.xs4all.nl (8.11.6/8.11.6) id f9VIraf08291; Wed, 31 Oct 2001 19:53:36 +0100 (CET) (envelope-from wkb) Date: Wed, 31 Oct 2001 19:53:36 +0100 From: Wilko Bulte To: Matthew Jacob Cc: Nick Rogness , freebsd-hackers@FreeBSD.ORG Subject: Re: Driver help Message-ID: <20011031195336.F8065@freebie.xs4all.nl> References: <20011031193137.C8065@freebie.xs4all.nl> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: ; from mjacob@feral.com on Wed, Oct 31, 2001 at 10:37:47AM -0800 X-OS: FreeBSD 4.4-STABLE X-PGP: finger wilko@freebsd.org Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Wed, Oct 31, 2001 at 10:37:47AM -0800, Matthew Jacob wrote: > "dumb" is relative and fungible. Sure.. > It's a tradeoff between doing the connection management in firmware (as with > the QLogic) or in the Kernel (as with Tachyon products mostly). It depends on > whom you believe ultimately does a better job. Well, I generally would like to put my money on the firmware. This assumes (as always..) good firmware. > Doing it in firmware allows the driver writer to manage the ULP stuff a lot > better because you're not so distracted by the low level ruckus. > Doing it in the kernel allows you to avoid all those nagging and persistent > questions of "why the hell did the f/w do/say/barf&&turn-left-against-a-red > *that*?" But it tends to produce horrible drivers if you are not very careful. I remember a WD33C93 driver here.. > On Wed, 31 Oct 2001, Wilko Bulte wrote: > > > On Wed, Oct 31, 2001 at 09:49:19AM -0800, Matthew Jacob wrote: > > > > That is probably what we call the Jaguar in-house. It is (IIRC) a > > dumb adapter, there is a Tachyon on it for sure. > > > > Wilko ---end of quoted text--- -- | / o / /_ _ email: wilko@FreeBSD.org |/|/ / / /( (_) Bulte Arnhem, The Netherlands To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message