From owner-aic7xxx Mon Apr 20 06:50:30 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id GAA23033 for aic7xxx-outgoing; Mon, 20 Apr 1998 06:50:30 -0700 (PDT) (envelope-from owner-aic7xxx@FreeBSD.ORG) Received: from dledford.dialnet.net (root@dledford.dialnet.net [206.65.249.116]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id NAA23019 for ; Mon, 20 Apr 1998 13:50:23 GMT (envelope-from dledford@dialnet.net) Received: from dialnet.net (localhost [127.0.0.1]) by dledford.dialnet.net (8.8.5/8.8.4) with ESMTP id IAA17197; Mon, 20 Apr 1998 08:49:27 -0500 Message-ID: <353B5267.FCF47ECD@dialnet.net> Date: Mon, 20 Apr 1998 08:49:27 -0500 From: Doug Ledford X-Mailer: Mozilla 4.05 [en] (X11; I; Linux 2.1.96 i686) MIME-Version: 1.0 To: Richard Cardoe CC: AIC7xxx@FreeBSD.ORG Subject: Re: Target Mode References: <2604.199804201249@tina.comp.lancs.ac.uk> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-aic7xxx@FreeBSD.ORG Precedence: bulk Richard Cardoe wrote: > > Hi, > > I've just started to implement target mode for the aic7xxx driver, under Linux. However, when I > downloaded the latest driver (5.0.10) I found several references to target mode in both the > sequencer code and the driver. Can anybody tell me the state of play as regards target mode > implementation? I would suspect that the target mode in the sequencer is unuseable in that version. It's only a beginning framework that isn't functional yet. Furthermore, since the upper level SCSI layers in linux know nothing about target mode, additional work would have to be done to get the commands out even if you could get them off the bus. So, for those reasons, that code in linux is there as reference, but it isn't used nor likely to be easily useable (for one thing, the target mode code in the current linux sequencer, which is still the Jan FreeBSD sequencer, hasn't been updated to not use the QINFIFO and QOUTFIFO registers, so it absolutely will not work with the current kernel driver code that doesn't use those registers at all). -- Doug Ledford Opinions expressed are my own, but they should be everybody's. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe aic7xxx" in the body of the message