From owner-freebsd-current@FreeBSD.ORG Wed Feb 3 17:49:04 2010 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 3D6FF1065670 for ; Wed, 3 Feb 2010 17:49:04 +0000 (UTC) (envelope-from mavbsd@gmail.com) Received: from fg-out-1718.google.com (fg-out-1718.google.com [72.14.220.156]) by mx1.freebsd.org (Postfix) with ESMTP id BC63C8FC1E for ; Wed, 3 Feb 2010 17:49:03 +0000 (UTC) Received: by fg-out-1718.google.com with SMTP id 16so50910fgg.13 for ; Wed, 03 Feb 2010 09:49:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:sender:message-id:date:from :user-agent:mime-version:to:cc:subject:references:in-reply-to :content-type:content-transfer-encoding; bh=A0L1b0Ly+46JySUoyqKdaCQI/DHkr/0n1Urx9aRts0k=; b=tI/LjbCi6h4qmmmkdHH5AEnfzom0jUwD+dG3fr3R64ZBIojSAv/FXwJ/1zC9qq19zo jF6iY+vMy+gvqzWV4lhUpBrO7ZygFb+9vxz5FWSuWn+LNO4Dit8fEnRW/pSzpRxO+oxw brp2UxTbEVJdg4st5lManbx0xuF2ycN21N2rs= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=VhNtI+sI+zXZWR2T6mjcnqwtmiTSKH8fRi1ueZhj4xk7cWhhPB/hzmV+Sywqn6HSp4 dljYz397f6uy6SmAwPYgu8P6OqGh+Wy11IUlXd9D8UH3e9TD9cMVjL2gd82HsQbm2O1s i6GgHky2NqLEp5d3/ks4bhOoRz2wIe6d9/gYk= Received: by 10.86.6.30 with SMTP id 30mr218560fgf.62.1265219340692; Wed, 03 Feb 2010 09:49:00 -0800 (PST) Received: from mavbook.mavhome.dp.ua (pc.mavhome.dp.ua [212.86.226.226]) by mx.google.com with ESMTPS id 13sm3310049fxm.5.2010.02.03.09.48.59 (version=SSLv3 cipher=RC4-MD5); Wed, 03 Feb 2010 09:48:59 -0800 (PST) Sender: Alexander Motin Message-ID: <4B69B707.2020504@FreeBSD.org> Date: Wed, 03 Feb 2010 19:48:55 +0200 From: Alexander Motin User-Agent: Thunderbird 2.0.0.23 (X11/20091212) MIME-Version: 1.0 To: Michael Reifenberger References: <1264818191.00213314.1264807803@10.7.7.3> <1264861382.00213426.1264851002@10.7.7.3> <1264864983.00213434.1264852204@10.7.7.3> <1265026986.00214174.1265016606@10.7.7.3> <1265030583.00214182.1265019602@10.7.7.3> <1265037797.00214273.1265026205@10.7.7.3> <1265037810.00214278.1265026802@10.7.7.3> <1265048584.00214331.1265035802@10.7.7.3> In-Reply-To: <1265048584.00214331.1265035802@10.7.7.3> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: FreeBSD-Current Subject: Re: Odd ada(4) failures when trying using USB scanner X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 03 Feb 2010 17:49:04 -0000 Michael Reifenberger wrote: > On Mon, 1 Feb 2010, Alexander Motin wrote: > >> Date: Mon, 01 Feb 2010 14:18:17 +0200 >> From: Alexander Motin >> To: Michael Reifenberger >> Cc: FreeBSD-Current >> Subject: Re: Odd ada(4) failures when trying using USB scanner >> >> Michael Reifenberger wrote: >>> I'm using -current as of r202157. >>> >>> When attaching an epson USB scanner and trying to `scanimage -L` >>> I get a freeze for some time and the following console logs: >>> ... >>> ata1: FAILURE - odd-sized DMA transfer attempt 5 % 2 >>> ata1: setting up DMA failed >> >> I would say that scanner application tries to probe all CAM devices, >> looking for scanner. While doing it, it uses SCSI/ATAPI commands with >> odd-sized transfer sizes. It causes errors from ata(4) and triggers bug >> in IXP700 AHCI controller. Odd-sized requests are generally not >> supported by ATA/SATA. Second problem is in work now. > > Could odd-sized commands be prohibited/ignored by the driver then? I've recently committed patch to 9-CURRENT, that should block sending of SCSI commands to non-ATAPI devices. That should fix your problem. -- Alexander Motin