From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-x243.google.com (mail-wm0-x243.google.com [IPv6:2a00:1450:400c:c09::243]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3qrt8s32j4zDq5g for ; Fri, 22 Apr 2016 21:06:21 +1000 (AEST) Received: by mail-wm0-x243.google.com with SMTP id e201so3319724wme.2 for ; Fri, 22 Apr 2016 04:06:21 -0700 (PDT) From: Christian Lamparter To: Julian Margetson Cc: Andy Shevchenko , Tejun Heo , linux-ide@vger.kernel.org, Rob Herring , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, =?ISO-8859-1?Q?M=E5ns_Rullg=E5rd?= Subject: Re: [PATCH v1 00/23] ata: sata_dwc_460ex: make it working again Date: Fri, 22 Apr 2016 13:06:15 +0200 Message-ID: <25199607.HghKfF60Bt@debian64> In-Reply-To: <571A0204.4050508@candw.ms> References: <1461262544-115408-1-git-send-email-andriy.shevchenko@linux.intel.com> <1939944.iP9HDO4haS@debian64> <571A0204.4050508@candw.ms> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Friday, April 22, 2016 06:50:44 AM Julian Margetson wrote: > On 4/21/2016 4:25 PM, Christian Lamparter wrote: > > On Thursday, April 21, 2016 09:15:21 PM Andy Shevchenko wrote: > >> The last approach in the commit 8b3444852a2b ("sata_dwc_460ex: mov= e to generic > >> DMA driver") to switch to generic DMA engine API wasn't tested on = bare metal. > >> Besides that we expecting new board support coming with the same S= ATA IP but > >> with different DMA. > >> > >> The driver has been tested myself on Sam460ex and WD MyBookLive (a= pollo3g) > >> boards. In any case I ask Christian, M=E5ns, and Julian to indepen= dently test and > >> provide Tested-by tag or error report. > > I did a test run on my WD MyBook Live. I applied all the patches in= > > this series on top of the topic/dw branch of Vinod Koul: > > = > > > > Tested-by: Christian Lamparter > > --- > > results for my old ST3808110AS HDD. filesystem is ext4. > > > > # hdparm -t /dev/sda > > > > /dev/sda: > > Timing buffered disk reads: 204 MB in 3.02 seconds =3D 67.51 MB= /sec > > > > # bonnie++ -u mbl > > Using uid:1000, gid:1000. > > Writing a byte at a time...done > > Writing intelligently...done > > Rewriting...done > > Reading a byte at a time...done > > Reading intelligently...done > > start 'em...done...done...done...done...done... > > Create files in sequential order...done. > > Stat files in sequential order...done. > > Delete files in sequential order...done. > > Create files in random order...done. > > Stat files in random order...done. > > Delete files in random order...done. > > Version 1.97 ------Sequential Output------ --Sequential Inpu= t- --Random- > > Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block= -- --Seeks-- > > Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %= CP /sec %CP > > mbl 496M 98 99 26011 21 17589 20 538 99 80138 = 39 208.9 8 > > Latency 95267us 1409ms 295ms 26947us 9644us= 1787ms > > Version 1.97 ------Sequential Create------ --------Random Cr= eate-------- > > mbl -Create-- --Read--- -Delete-- -Create-- --Read-= -- -Delete-- > > files /sec %CP /sec %CP /sec %CP /sec %CP /sec = %CP /sec %CP > > 16 6959 78 +++++ +++ 5197 40 7250 79 +++++ = +++ 4718 37 > > Latency 149ms 6742us 212ms 177ms 767us= 217ms > > 1.97,1.97,mbl,1,1461269771,496M,,98,99,26011,21,17589,20,538,99,801= 38,39,208.9,8,16,,,,,6959,78,+++++,+++,5197,40,7250,79,+++++,+++,4718,3= 7,95267us,1409ms,295ms,26947us,9644us,1787ms,149ms,6742us,212ms,177ms,7= 67us,217ms > > > Again on copy partitions . Ok, here's the copy from my mail off-list. Well, a unrelated driver "m41t80" caused a crash: [ 12.912739] Oops: Kernel access of bad area, sig: 11 [#3] [ 12.912743] PREEMPT Canyonlands [ 12.912753] CPU: 0 PID: 1413 Comm: irq/45-m41t80 Tainted: G D = 4.6.0-rc4-next-20160421-sam460ex-jm #1 [ 12.912757] task: ea9834e0 ti: eea6c000 task.ti: eea6c000 [ 12.912760] NIP: c0224480 LR: c0023494 CTR: c0042508 [ 12.912764] REGS: eea6daf0 TRAP: 0300 Tainted: G D (= 4.6.0-rc4-next-20160421-sam460ex-jm) [ 12.912774] MSR: 00029000 CR: 24008282 XER: 00000000 [ 12.912825] DEAR: 00000008 ESR: 00000000=20 [...] [ 12.912927] --- interrupt: 300 at mutex_lock+0x0/0x1c [ 12.912927] LR =3D m41t80_handle_irq+0x28/0xac [ 12.912932] [eea6de40] [00000000] (null) (unreliable) [ 12.912938] [eea6de60] [c004ffac] irq_thread_fn+0x2c/0x48 [ 12.912944] [eea6de80] [c00501cc] irq_thread+0xc4/0x160 [ 12.912951] [eea6ded0] [c003a3f8] kthread+0xc8/0xcc [ 12.912957] [eea6df40] [c000aee8] ret_from_kernel_thread+0x5c/0x64 [ 12.912960] Instruction dump: [ 12.912974] 80010014 7fc3f378 bbc10008 7c0803a6 38210010 4be24ca8 94= 21ffd0 7c0802a6=20 [ 12.912987] bf210014 90010034 3b4302d8 812302ec <83890008> 812302d8 = 7f9a4840 419e011c=20 [ 12.912995] Fixing recursive fault but reboot is needed! ^^^ "reboot is needed!" Another thing that came to my mind: Have you checked if your hard drive= and the cables are ok? Are there any pending sectors or suspicious smar= t values? Has the drive passed the extended offline test? =20 Otherwise, I can't reproduce the error with my MyBook system. I've test= ed your kernel and it worked on the device without crashing. (I copied/dd'= ed 80GB from and back to the hard-drive. It was long and boring, but I did= n't encounter any issues and the crc32 matched). Sorry, but I can't help you if I can't reproduce it... And short of sen= ding your box to test, I see no efficient way to debug it. However, what I c= an do, if you are interested: I have a few "build your own" My Book Live k= its. It just needs a 3.5" hard-drive and 12v power adapter. If you are inter= ested PM me off-list, this way you can verify that the kernels you build do w= ork, just in case this error is due to a hardware issue (zapped controller,=20= bad ram/drive/cable?) with your sam460ex box. Regards, Christian