From owner-freebsd-alpha Mon Mar 15 11: 7:42 1999 Delivered-To: freebsd-alpha@freebsd.org Received: from duke.cs.duke.edu (duke.cs.duke.edu [152.3.140.1]) by hub.freebsd.org (Postfix) with ESMTP id B81D214BDE for ; Mon, 15 Mar 1999 11:07:40 -0800 (PST) (envelope-from gallatin@cs.duke.edu) Received: from grasshopper.cs.duke.edu (grasshopper.cs.duke.edu [152.3.145.30]) by duke.cs.duke.edu (8.9.1/8.9.1) with ESMTP id OAA12273; Mon, 15 Mar 1999 14:07:20 -0500 (EST) Received: (from gallatin@localhost) by grasshopper.cs.duke.edu (8.9.2/8.9.1) id OAA92284; Mon, 15 Mar 1999 14:07:06 -0500 (EST) (envelope-from gallatin@cs.duke.edu) From: Andrew Gallatin MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Date: Mon, 15 Mar 1999 14:07:05 -0500 (EST) To: mjacob@feral.com Cc: alpha@FreeBSD.ORG Subject: Re: revisiting...old business...Alpha I/O vs. Mem Mapping In-Reply-To: References: <14043.64310.216520.299580@grasshopper.cs.duke.edu> X-Mailer: VM 6.43 under 20.4 "Emerald" XEmacs Lucid Message-ID: <14061.22721.176843.417064@grasshopper.cs.duke.edu> Sender: owner-freebsd-alpha@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Matthew Jacob writes: > > If I remember right, the 20152 in an AS600 doesn't support I/O space > > mapping of devices behind it. That address of 00000000 sure looks > > bogus to me anyway.. For devices behind a ppb, we should be checking > > that PCIM_CMD_PORTEN is set on the bridge its behind.. I don't really > > know how to architect that though.. > > > > At any rate, try setting SCSI_ISP_PREFER_MEM_MAP to 1 in isp_pci.c & > > see if that helps. > > > > Drew > > Drew- you wanted to make MEM map the default for all alpha platforms, but > I've had a reluctance to do so. If I/O mapping is broken here, perhaps the > best place to fix this is in the PCI code? What do you think? That's certainly the right thing to do. I don't think I understand the code well enough to do this myself though.. Drew To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message