From owner-freebsd-current Mon Jul 12 17: 1: 5 1999 Delivered-To: freebsd-current@freebsd.org Received: from dingo.cdrom.com (dingo.cdrom.com [204.216.28.145]) by hub.freebsd.org (Postfix) with ESMTP id 2DD0D14FD2; Mon, 12 Jul 1999 17:01:02 -0700 (PDT) (envelope-from mike@dingo.cdrom.com) Received: from dingo.cdrom.com (localhost.cdrom.com [127.0.0.1]) by dingo.cdrom.com (8.9.3/8.8.8) with ESMTP id QAA02518; Mon, 12 Jul 1999 16:56:24 -0700 (PDT) (envelope-from mike@dingo.cdrom.com) Message-Id: <199907122356.QAA02518@dingo.cdrom.com> X-Mailer: exmh version 2.0.2 2/24/98 To: Stephen Hocking-Senior Programmer PGS Tensor Perth Cc: "Brian F. Feldman" , current@freebsd.org Subject: Re: MTRR stuff In-reply-to: Your message of "Sat, 10 Jul 1999 13:00:18 +0800." <199907100500.NAA05937@ariadne.tensor.pgs.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Mon, 12 Jul 1999 16:56:24 -0700 From: Mike Smith Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > > > What exactly are the ranges? You haven't given me enough info yet. I wrote the > > K6-* MTRR driver, so I'd like to help. > > > OK, the Linux 3dfx driver attempts to set up a write combining range starting > at the card's base address and 0x400000 bytes long. After doing this it then > sets up a range marked as uncacheable starting at the card's base address of > length 0x1000. The current i686 MTRR driver doesn't allow overlapping ranges at all; this is a defect in its implementation that will be rectified when I get to work on it next (hopefully in the next week or so). -- \\ The mind's the standard \\ Mike Smith \\ of the man. \\ msmith@freebsd.org \\ -- Joseph Merrick \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message