From owner-freebsd-hackers Wed May 21 01:42:37 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id BAA28373 for hackers-outgoing; Wed, 21 May 1997 01:42:37 -0700 (PDT) Received: from genesis.atrad.adelaide.edu.au (genesis.atrad.adelaide.edu.au [129.127.96.120]) by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id BAA28366 for ; Wed, 21 May 1997 01:42:34 -0700 (PDT) Received: (from msmith@localhost) by genesis.atrad.adelaide.edu.au (8.8.5/8.7.3) id SAA11179; Wed, 21 May 1997 18:11:11 +0930 (CST) From: Michael Smith Message-Id: <199705210841.SAA11179@genesis.atrad.adelaide.edu.au> Subject: Re: DMA for IDE drives ? In-Reply-To: <199705210700.JAA07522@labinfo.iet.unipi.it> from Luigi Rizzo at "May 21, 97 09:00:12 am" To: luigi@labinfo.iet.unipi.it (Luigi Rizzo) Date: Wed, 21 May 1997 18:11:10 +0930 (CST) Cc: hackers@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL28 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk Luigi Rizzo stands accused of saying: > > one thing I have been long wondering about is whether it is possible to > add DMA support for IDE devices. I think many controllers now have this > capability, maybe some even implement it right... so, are the docs > available somewhere to try and implement DMA mode ? DMA support for at least the Intel Triton chipset was added some time back, but never integrated with the 'wd' driver. IIRC, DavidG did it. > Luigi Rizzo | Dip. di Ingegneria dell'Informazione -- ]] Mike Smith, Software Engineer msmith@gsoft.com.au [[ ]] Genesis Software genesis@gsoft.com.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control. (ph) +61-8-8267-3493 [[ ]] Unix hardware collector. "Where are your PEZ?" The Tick [[