Date:	Tue, 13 Sep 2011 13:27:13 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Manoj Iyer <manoj.iyer@...onical.com>
CC:	Chris Ball <cjb@...top.org>, linux-mmc@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: SDHCI regression since 2.6.39

On 09/13/2011 12:29 PM, Manoj Iyer wrote:
>
> @Jeremy, Could the problem be BIOS related? we have seen a number of
> issues with older bioses on the x220s.

I have 1.17 installed at the moment.  It looks like 1.21 is current, so
I could try updating it.  But the Fedora 15 2.6.38 kernel worked fine
with this controller and cards, so I don't think BIOS version is an
issue.  Also, there's nothing obviously related to the SD controller in
the release notes (not that I trust their competeness).

    J


>
> Here are a few cards I tested with the 3.1 RC4 kernel on Ubuntu
> running on
> a Lenovo X220. with Ricoh e823 card reader.
>
> == kernel version ==
> Linux u 3.1.0-0301rc4-generic #201108290905 SMP MonO Aug 29 09:11:07
> UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
> This is the upstream RC4 kernel build for ubuntu.
> http://kernel.ubuntu.com/~kernel-ppa/mainline/
>
> == LSPCI output for SD card reader ==
> 0d:00.0 System peripheral [0880]: Ricoh Co Ltd Device [1180:e823] (rev
> 04) (prog-if 01)
>     Subsystem: Lenovo Device [17aa:21db]
>     Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
> ParErr- Stepping- SERR- FastB2B- DisINTx-
>     Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
> <TAbort- <MAbort- >SERR- <PERR- INTx-
>     Latency: 0, Cache Line Size: 64 bytes
>     Interrupt: pin A routed to IRQ 16
>     Region 0: Memory at 91500000 (32-bit, non-prefetchable) [size=256]
>     Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+
>         Address: 0000000000000000  Data: 0000
>     Capabilities: [78] Power Management version 3
>         Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA
> PME(D0+,D1+,D2+,D3hot+,D3cold+)
>         Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=2 PME+
>     Capabilities: [80] Express (v1) Endpoint, MSI 00
>         DevCap:    MaxPayload 128 bytes, PhantFunc 0, Latency L0s
> unlimited, L1 unlimited
>             ExtTag- AttnBtn+ AttnInd+ PwrInd+ RBE+ FLReset-
>         DevCtl:    Report errors: Correctable- Non-Fatal- Fatal-
> Unsupported-
>             RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
>             MaxPayload 128 bytes, MaxReadReq 128 bytes
>         DevSta:    CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr-
> TransPend-
>         LnkCap:    Port #1, Speed 2.5GT/s, Width x1, ASPM L0s L1,
> Latency L0 <4us, L1 unlimited
>             ClockPM+ Surprise- LLActRep- BwNot-
>         LnkCtl:    ASPM L1 Enabled; RCB 64 bytes Disabled- Retrain-
> CommClk+
>             ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
>         LnkSta:    Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+
> DLActive- BWMgmt- ABWMgmt-
>     Capabilities: [100 v1] Virtual Channel
>         Caps:    LPEVC=0 RefClk=100ns PATEntryBits=1
>         Arb:    Fixed- WRR32- WRR64- WRR128-
>         Ctrl:    ArbSelect=Fixed
>         Status:    InProgress-
>         VC0:    Caps:    PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
>             Arb:    Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
>             Ctrl:    Enable+ ID=0 ArbSelect=Fixed TC/VC=ff
>             Status:    NegoPending- InProgress-
>     Capabilities: [800 v1] Advanced Error Reporting
>         UESta:    DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt-
> RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
>         UEMsk:    DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt-
> RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
>         UESvrt:    DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt-
> RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
>         CESta:    RxErr+ BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
>         CEMsk:    RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
>         AERCap:    First Error Pointer: 00, GenCap+ CGenEn- ChkCap+
> ChkEn-
>     Kernel driver in use: sdhci-pci
>     Kernel modules: sdhci-pci
>
> == Sandisk Extreme Pro 16GB ==
> Was able to mount Ultra high speed SDHC card 45MB/s, read and write
> works.
>
> [   60.578630] mmc0: new ultra high speed SDHC card at address e624
> [   60.611808] mmcblk0: mmc0:e624 SD16G 14.8 GiB [   60.644314] 
> mmcblk0: p1
> [   60.947772] mmcblk0: error -84 transferring data, sector 8192, nr
> 8, cmd response 0x900, card status 0xb00
> [   60.947777] mmcblk0: retrying using single block read
>
> /dev/mmcblk0p1 on /media/New Volume type vfat
> (rw,nosuid,nodev,uid=1000,gid=1000,shortname=mixed,dmask=0077,utf8=1,showexec,flush,uhelper=udisks)
>
> == Sandisk 2GB SD card ==
> Was able to mount Sandisk SD card, read and write works.
> [  298.540999] mmc0: new SD card at address 0002
> [  298.541306] mmcblk0: mmc0:0002 00000 1.86 GiB [  298.543157] 
> mmcblk0: p1
>
> /dev/mmcblk0p1 on /media/E0FD-1813 type vfat
> (rw,nosuid,nodev,uid=1000,gid=1000,shortname=mixed,dmask=0077,utf8=1,showexec,flush,uhelper=udisks)
>
> == Transcend 2GB MMC plus card ==
> Was able to mount and read/write. Shows up as SD card.
> [  734.032981] mmc0: error -110 whilst initialising MMC card
> [  734.132920] mmc0: error -110 whilst initialising MMC card
> [  734.228244] mmc0: new MMC card at address 0001
> [  734.228631] mmcblk0: mmc0:0001 MMC    1.87 GiB [  734.229834] 
> mmcblk0: p1
> u@u:~$
>
> /dev/mmcblk0p1 on /media/New Volume type vfat
> (rw,nosuid,nodev,uid=1000,gid=1000,shortname=mixed,dmask=0077,utf8=1,showexec,flush,uhelper=udisks)
>
> Cheers
> -- 
> ====================
> Manoj Iyer
> Ubuntu/Canonical
> Hardware Enablement
> ====================
>
>
> On Tue, 13 Sep 2011, Chris Ball wrote:
>
>> Hi,
>>
>> On Tue, Sep 13 2011, Jeremy Fitzhardinge wrote:
>>>> If it is running, and not helping, can I persuade you to try a full
>>>> bisection?
>>>
>>> OK, will do.
>>
>> Thank you!
>>
>>>>   I don't think we have other reports of this bug, and the
>>>> only other person who has reported something like it wasn't a kernel
>>>> hacker.
>>>
>>> That's interesting; the X220 is a pretty common machine these days, I
>>> think.  I wonder if there's variations in the SD controller or
>>> something?
>>
>> I just asked Matthew Garrett to check his X220, and his has the same
>> e823
>> controller as you, is running a 3.1-rc kernel, and everything's working.
>>
>> So it's not even variation in the controller model, it's something even
>> more subtle.  Perhaps try some different cards?  What capacity/speed is
>> the one you're trying?  If there is a per-card difference, I suppose
>> we'd expect it to be that slower cards work and faster cards fail
>> (given the nature of the patch I linked in my last mail).
>>
>> Thanks,
>>
>> - Chris.
>> -- 
>> Chris Ball   <cjb@...top.org>   <http://printf.net/>
>> One Laptop Per Child
>>
>>
>

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