From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <kraxel@redhat.com>
Received-SPF: Pass (sender SPF authorized) identity=mailfrom;
 client-ip=209.132.183.28; helo=mx1.redhat.com; envelope-from=kraxel@redhat.com;
 receiver=edk2-devel@lists.01.org 
Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (No client certificate requested)
 by ml01.01.org (Postfix) with ESMTPS id E33542194EB78
 for <edk2-devel@lists.01.org>; Tue, 19 Feb 2019 00:49:18 -0800 (PST)
Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com
 [10.5.11.15])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by mx1.redhat.com (Postfix) with ESMTPS id C61C481F33;
 Tue, 19 Feb 2019 08:49:17 +0000 (UTC)
Received: from sirius.home.kraxel.org (ovpn-116-228.ams2.redhat.com
 [10.36.116.228])
 by smtp.corp.redhat.com (Postfix) with ESMTP id 816475D706;
 Tue, 19 Feb 2019 08:49:17 +0000 (UTC)
Received: by sirius.home.kraxel.org (Postfix, from userid 1000)
 id 6B468A113; Tue, 19 Feb 2019 09:49:16 +0100 (CET)
Date: Tue, 19 Feb 2019 09:49:16 +0100
From: Gerd Hoffmann <kraxel@redhat.com>
To: Laszlo Ersek <lersek@redhat.com>
Cc: Ray Ni <ray.ni@intel.com>, qemu devel list <qemu-devel@nongnu.org>,
 edk2-devel-01 <edk2-devel@lists.01.org>,
 Markus Armbruster <armbru@redhat.com>
Message-ID: <20190219084916.yinhlryf4sgx7t5p@sirius.home.kraxel.org>
References: <cae4cdd7-2693-275b-5a54-e419e914d0a2@redhat.com>
MIME-Version: 1.0
In-Reply-To: <cae4cdd7-2693-275b-5a54-e419e914d0a2@redhat.com>
User-Agent: NeoMutt/20180716
X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15
X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16
 (mx1.redhat.com [10.5.110.25]); Tue, 19 Feb 2019 08:49:17 +0000 (UTC)
Subject: Re: nonzero LUN on USB Bulk Only Transfer fails with QEMU+edk2
X-BeenThere: edk2-devel@lists.01.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: EDK II Development  <edk2-devel.lists.01.org>
List-Unsubscribe: <https://lists.01.org/mailman/options/edk2-devel>,
 <mailto:edk2-devel-request@lists.01.org?subject=unsubscribe>
List-Archive: <http://lists.01.org/pipermail/edk2-devel/>
List-Post: <mailto:edk2-devel@lists.01.org>
List-Help: <mailto:edk2-devel-request@lists.01.org?subject=help>
List-Subscribe: <https://lists.01.org/mailman/listinfo/edk2-devel>,
 <mailto:edk2-devel-request@lists.01.org?subject=subscribe>
X-List-Received-Date: Tue, 19 Feb 2019 08:49:19 -0000
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

  Hi,

> (2) If I change the cmdline to "lun=5", then the exchange is:

Not supported (by the usb protocol).

The protocol has a control message to query the number of devices (grep
for GetMaxLun in qemu).  LUNs are not allowed to be sparse.  So, with a
single storage device the LUN must be zero.  With two devices the LUNs
must be 0,1, with three 0,1,2 etc., you get the idea :)

Maybe usb-bot should check for that and throw an error, I think right
now we only have the generic scsi code check which will verify the lun
isn't too big (<= 15) but will not check the non-sparse requirement.

cheers,
  Gerd