>-----Original Message----- >From: Joe Jin [mailto:joe....@oracle.com] >Sent: Sunday, November 18, 2012 9:38 PM >To: Dave, Tushar N >Cc: e1000-de...@lists.sf.net; net...@vger.kernel.org; linux- >ker...@vger.kernel.org; Mary Mcgrath >Subject: Re: 82571EB: Detected Hardware Unit Hang > >On 11/16/12 04:26, Dave, Tushar N wrote: >>> Would you please help to fine the offset of max payload size in eeprom? >>> I'd like to have a try to modify it by ethtool. >> >> It is defined using bit 8 of word 0x1A. >> Bit value 0 = 128B , bit value 1 = 256B > >Hi Tushar, > >I checked one of my server which Max Payload Size is 128: > ># lspci -vvv -s 52:00.1 >52:00.1 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet >Controller (rev 06) > Subsystem: Intel Corporation PRO/1000 PT Quad Port Server Adapter > 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 B routed to IRQ 266 > Region 0: Memory at dfea0000 (32-bit, non-prefetchable) >[size=128K] > Region 1: Memory at dfe80000 (32-bit, non-prefetchable) >[size=128K] > Region 2: I/O ports at 6020 [size=32] > [virtual] Expansion ROM at d8120000 [disabled] [size=128K] > Capabilities: [c8] Power Management version 2 > Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2- >,D3hot+,D3cold-) > Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=1 PME- > Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+ > Address: 00000000fee00000 Data: 409a > Capabilities: [e0] Express (v1) Endpoint, MSI 00 > DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s ><512ns, L1 <64us > ExtTag- AttnBtn- AttnInd- PwrInd- RBE- FLReset- > DevCtl: Report errors: Correctable+ Non-Fatal+ Fatal+ >Unsupported+ > RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+ > MaxPayload 128 bytes, MaxReadReq 4096 bytes > DevSta: CorrErr- UncorrErr- FatalErr+ UnsuppReq+ AuxPwr- >TransPend- > LnkCap: Port #0, Speed 2.5GT/s, Width x4, ASPM L0s, >Latency L0 <4us, L1 <64us > ClockPM- Surprise- LLActRep- BwNot- > LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- >CommClk+ > ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- > LnkSta: Speed 2.5GT/s, Width x4, TrErr- Train- SlotClk+ >DLActive- BWMgmt- ABWMgmt- > Capabilities: [100 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: 14, GenCap- CGenEn- ChkCap- >ChkEn- > Capabilities: [140 v1] Device Serial Number 00-15-17-ff-ff-16-ed- >86 > Kernel driver in use: e1000e > Kernel modules: e1000e > >And eeprom dump as below: > >Offset Values >------ ------ >0x0000 00 15 17 16 ed 86 24 05 ff ff a2 50 ff ff ff ff >0x0010 57 d4 07 74 2f a4 a4 11 86 80 a4 10 86 80 65 b1 >0x0020 08 00 a4 10 00 58 00 00 01 50 00 00 00 00 00 01 >0x0030 f6 6c b0 37 a6 07 03 84 83 07 00 00 03 c3 02 06 >0x0040 08 00 f0 0e 64 21 40 00 01 40 00 00 00 00 00 00 >0x0050 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >0x0060 00 01 00 40 1e 12 07 40 00 01 00 40 ff ff ff ff > > >If I did not misunderstand, the value of offset 0x1a is 0x07a6, then the >bit 8 is 1, but my NIC's MPS is 128b, anything I'm wrong?
Have you power off the system completely after modifying eeprom? If not please do so. -Tushar -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
