From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965033AbWDHRhq (ORCPT ); Sat, 8 Apr 2006 13:37:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965035AbWDHRhq (ORCPT ); Sat, 8 Apr 2006 13:37:46 -0400 Received: from einhorn.in-berlin.de ([192.109.42.8]:29569 "EHLO einhorn.in-berlin.de") by vger.kernel.org with ESMTP id S965033AbWDHRhp (ORCPT ); Sat, 8 Apr 2006 13:37:45 -0400 X-Envelope-From: stefanr@s5r6.in-berlin.de Message-ID: <4437F493.9000803@s5r6.in-berlin.de> Date: Sat, 08 Apr 2006 19:36:19 +0200 From: Stefan Richter User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.3) Gecko/20040914 X-Accept-Language: de, en MIME-Version: 1.0 To: linux1394-user@lists.sourceforge.net CC: linux-kernel@vger.kernel.org Subject: Data about Apple iPod, Mac, Powerbook, iBook needed Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: (0.842) AWL,BAYES_50 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi all, a number of Apple iPods have buggy firmware which report a wrong disk size when plugged in. This may lead to I/O errors, making the iPod inaccessible under Linux. I have been told this happens especially if the kernel is configured for EFI partition support. The USB storage driver already contains a workaround for several iPod models. We need to add the same to the FireWire storage driver (sbp2). Alas we cannot use the same model IDs like usb-storage to detect whether a disk is actually an iPod. In particular, sbp2 must be able to distinguish between iPods and Apple Macs or Powerbooks or iBooks which are attached to a Linux box in "target disk mode". Therefore I need help from people who have a FireWire iPod and a Linux box with FireWire port: 1. Please plug it in via FireWire and report the output of $ cat /sys/bus/ieee1394/devices/000a27*-0/model_id and of $ dmesg | grep "hdwr sectors" 2. If it is an USB/FireWire combo iPod, please also plug it in via USB and report the output of $ dmesg | grep "hdwr sectors" I would also like to know the model of iPod (i.e. generation of iPod) and the version of the Linux kernel. I also need help from people who have an Apple Mac or Powerbook or iBook and a Linux box with FireWire port: A. On the Linux box, unload the sbp2 driver: # modprobe -r sbp2 Reload it with the following parameter: # modprobe sbp2 force_inquiry_hack=1 Also make sure that ohci1394 is loaded. (Check with lsmod. Some rare host adapters need pcilynx instead oh ohci1394.) B. Reboot the Apple and hold the "t" key. This boots the Mac into "target disk mode", i.e. lets it expose its built-in HDD as a FireWire disk. The "t" key can be released when a big FireWire symbol is shown on the screen. C. Connect the Mac and the Linux box via FireWire. The sbp2 driver should now log in into the Mac, which will be shown in the kernel log as well as in /proc/scsi/scsi. Please report the output of $ dmesg | grep firmware_revision D. The Mac can be unplugged and normally rebooted after this. Thanks in advance to everyone who takes the time to collect these data. -- Stefan Richter -=====-=-==- -=-- -=--- http://arcgraph.de/sr/