From owner-freebsd-hackers Mon Feb 9 19:40:32 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id TAA03665 for hackers-outgoing; Mon, 9 Feb 1998 19:40:32 -0800 (PST) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from imo26.mail.aol.com (imo26.mx.aol.com [198.81.19.154]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id TAA03376 for ; Mon, 9 Feb 1998 19:39:21 -0800 (PST) (envelope-from StevenR362@aol.com) From: StevenR362@aol.com Received: from StevenR362@aol.com by imo26.mx.aol.com (IMOv12/Dec1997) id HXDWa18883 for ; Mon, 9 Feb 1998 22:38:35 -0500 (EST) Message-ID: Date: Mon, 9 Feb 1998 22:38:35 EST To: hackers@FreeBSD.ORG Mime-Version: 1.0 Subject: PCI IDE DMA? Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit X-Mailer: AOL 3.0 for Windows 95 sub 64 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG I was poking around the Tyan web site and noticed their partial list of drives that do not support dma. I was wondering how much error checking FreeBSD's ide dma driver does. In other words, if I enable it with my current drives, is it likely to hose my filesystems? Does it query the drives and only dma to those that support it? My current drives are an NEC DSE1700A 1.7GB pio4 capable drive and an WDC AC2850F 850MB pio3 capable drive. My motherboard is a Tyan Tomcat IV D with 32MB EDO and currently a single pentium 200 MMX running a uniprocessor 2/8/98 current. Hopefully tomorrow I will be able to fire it up with two cpu's. :) Also does ide dma work in smp mode? Steve To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe hackers" in the body of the message