[CentOS] PCI-E not supported in kernel 2.6.32-131.12.1.el6

Mon Oct 3 15:18:02 UTC 2011
Lorenzo Martínez Rodríguez <lorenzo at lorenzomartinez.es>


I own a PCI-Express parallel card installed on my server Fujitsu TX100 
S2. I am running CentOS 6 x64. In Kernel version 
2.6.32-71.29.1.el6.x86_64, it was correctly detected as:

[root at Carmen ~]# lspci -vvv -s 05:00.2
05:00.2 Parallel controller: NetMos Technology Device 9912 (prog-if 03 
     Subsystem: Device a000:2000
     Physical Slot: 4
     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: 32 bytes
     Interrupt: pin C routed to IRQ 11
     Region 0: I/O ports at 2018 [size=8]
     Region 1: I/O ports at 2010 [size=8]
     Region 2: Memory at c0105000 (32-bit, non-prefetchable) [size=4K]
     Region 5: Memory at c0104000 (32-bit, non-prefetchable) [size=4K]
     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=375mA 
         Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
     Capabilities: [80] Express (v1) Legacy Endpoint, MSI 00
         DevCap:    MaxPayload 512 bytes, PhantFunc 0, Latency L0s <1us, 
L1 <2us
             ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
         DevCtl:    Report errors: Correctable- Non-Fatal+ Fatal+ 
             RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
             MaxPayload 128 bytes, MaxReadReq 512 bytes
         DevSta:    CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr- 
         LnkCap:    Port #1, Speed 2.5GT/s, Width x1, ASPM L0s L1, 
Latency L0 <64ns, L1 unlimited
             ClockPM+ Surprise- LLActRep- BwNot-
         LnkCtl:    ASPM Disabled; 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] 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-

To be able to load it I had to configure the file 
/etc/modprobe.d/parport_pc.conf with the line "options parport_pc 

Nevertheless, in CentOS the new kernel 2.6.32-131.12.1.el6 was released 
and I have lost all compatibility with this PCI-Express card. Now, if I 
execute an lspci -vv a message with the text "!!! Unknown header type 
7f" appears

If I downgrade to 2.6.32-71.29.1.el6.x86_64 the card is recognised and 
starts to work again.

Can you please help me in any way? do you know if is it maybe a bug or 
only unsupported hardware in new kernels?

Best regards,


Lorenzo Martinez Rodriguez

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