Re: SDHCI regression since 2.6.39

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@Jeremy, Could the problem be BIOS related? we have seen a number of issues with older bioses on the x220s.

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@xxxxxxxxxx>   <http://printf.net/>
One Laptop Per Child



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