From owner-freebsd-hardware Tue Apr 28 14:19:19 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id OAA09352 for freebsd-hardware-outgoing; Tue, 28 Apr 1998 14:19:19 -0700 (PDT) (envelope-from owner-freebsd-hardware@FreeBSD.ORG) Received: from alpo.whistle.com (alpo.whistle.com [207.76.204.38]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id OAA09097 for ; Tue, 28 Apr 1998 14:17:56 -0700 (PDT) (envelope-from julian@whistle.com) Received: (from daemon@localhost) by alpo.whistle.com (8.8.5/8.8.5) id OAA22816; Tue, 28 Apr 1998 14:13:07 -0700 (PDT) Received: from current1.whistle.com(207.76.205.22) via SMTP by alpo.whistle.com, id smtpd022807; Tue Apr 28 21:13:04 1998 Message-ID: <35464515.41C67EA6@whistle.com> Date: Tue, 28 Apr 1998 14:07:33 -0700 From: Julian Elischer Organization: Whistle Communications X-Mailer: Mozilla 3.0Gold (X11; I; FreeBSD 2.2.5-RELEASE i386) MIME-Version: 1.0 To: Rob Schofield CC: freebsd-hardware@FreeBSD.ORG Subject: Re: References: <3.0.5.32.19980428113336.007a1470@mail.xs4all.nl> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Rob Schofield wrote: > NO, sorry, but the adaptors usually *do*, as it's built into the > chipsets (otherwise how would your SCSI disks work as targets? ;^) I did not say 'devices', I said "adapters".. Host adapters is what I obviously meant, and the host adpters and their drivers don't support it, so we'd have to add that support.. When I wrote the SCSI subsystem (yes I know how it works) I tried to leave 'hooks' for target mode, but none of the adapters supported it so the drivers couldn't do it. the 1542 managed to HALF support it for a while. ok? >. As > usual, it's the **host software** that doesn't. Even then, if you are using > the ASPI generalisation layer provided/sold by Adaptec, a lot of what you > need for target mode is in there. we are NOT using it as they won't give source.. and 'MOST' is not enough. They were totally unable to get target mode working correctly on their 154x series and I have no reason to believe that they have spent more energy on new series. > > Don't generalise, please. ok the adapter drivers don't usually support it, but in addition those cards that are "intelligent" usually fail to support it correctly in their firmware as well. The firmware on most cards is usually UNTESTED in target mode. julian To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message