1. Below is lspci output for IGB NIC and E1000E NIC
2. Although we are seeing this on ARM platform, but we need to root cause
as to why this occurs?
a) IGB NIC
01:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network
Connection (rev 03)
Subsystem: Intel Corporation Ethernet Server Adapter I210-T1
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+
Interrupt: pin A routed to IRQ 130
Region 0: Memory at 32100000 (32-bit, non-prefetchable) [size=1M]
Region 3: Memory at 32200000 (32-bit, non-prefetchable) [size=16K]
[virtual] Expansion ROM at 12100000 [disabled] [size=1M]
Capabilities: [40] 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=1 PME-
Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+
Address: 0000000000000000 Data: 0000
Masking: 00000000 Pending: 00000000
Capabilities: [70] MSI-X: Enable+ Count=5 Masked-
Vector table: BAR=3 offset=00000000
PBA: BAR=3 offset=00002000
Capabilities: [a0] Express (v2) Endpoint, MSI 00
DevCap: MaxPayload 512 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+
FLReset-
MaxPayload 128 bytes, MaxReadReq 512 bytes
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+
TransPend-
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1,
Latency L0 <2us, L1 <16us
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-
DevCap2: Completion Timeout: Range ABCD, TimeoutDis+
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance-
SpeedDis-, Selectable De-emphasis: -6dB
Transmit Margin: Normal Operating Range,
EnterModifiedCompliance- ComplianceSOS-
Compliance De-emphasis: -6dB
LnkSta2: Current De-emphasis Level: -6dB,
EqualizationComplete-, EqualizationPhase1-
EqualizationPhase2-, EqualizationPhase3-,
LinkEqualizationRequest-
Capabilities: [100 v2] 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-
Capabilities: [140 v1] Device Serial Number a0-36-9f-ff-ff-24-64-ef
Capabilities: [1a0 v1] Transaction Processing Hints
Device specific mode supported
Steering table in TPH capability structure
Kernel driver in use: igb
b) E1000E NIC:
01:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network
Connection
Subsystem: Intel Corporation Gigabit CT2 Desktop 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 A routed to IRQ 130
Region 0: Memory at 32180000 (32-bit, non-prefetchable) [size=128K]
Region 1: Memory at 32100000 (32-bit, non-prefetchable) [size=512K]
Region 2: I/O ports at 1000 [disabled] [size=32]
Region 3: Memory at 321a0000 (32-bit, non-prefetchable) [size=16K]
[virtual] Expansion ROM at 12100000 [disabled] [size=256K]
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: 0000000000000000 Data: 0000
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 512 bytes
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+
TransPend-
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1,
Latency L0 <128ns, 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 x1, TrErr- Train- SlotClk+
DLActive- BWMgmt- ABWMgmt-
Capabilities: [a0] MSI-X: Enable+ Count=5 Masked-
Vector table: BAR=3 offset=00000000
PBA: BAR=3 offset=00002000
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: 00, GenCap- CGenEn- ChkCap-
ChkEn-
Capabilities: [140 v1] Device Serial Number 68-05-ca-ff-ff-12-c3-cb
Kernel driver in use: e1000e
On Mon, May 5, 2014 at 8:58 PM, Alexander Duyck <alexander.h.du...@intel.com
> wrote:
> On 05/04/2014 11:55 PM, shiv prakash Agarwal wrote:
> > + linux-arm-kernel mailing list.
> >
> > Thanks Alex,
> >
> > 1. So overall issue is any memory/config space access hangs(logs above)
> > if bus master enable bit is set on IGB NIC card,this is not observed
> > with E1000E NIC cards on same platform.
> >
> > 2. Above issue is repro'able on my ARM platform, not x86 ubuntu. Not
> > sure how much its related to ARM though.
> >
> > 3. I saw below differences in lspci -vvv output b/w e1000e and igb, I am
> > not sure if this has anything to do with above issue.
> > RC config is same for both cases.
> >
> > IGB / E1000E
> >
> > Command Status: INTx+/INTx-
> > PM Status: NoSoftRst+/NoSoftRst-
> > DevCap: FLReset-/FLReset+
> > No Dev/Link2 Cap/Sta Registers for E1000E
> > Some differences in AER Registers
> >
> > 4. Any idea, if this card is verified on ARM by anybody?
> >
>
> It seems like you are glossing over the obvious issue. You said it
> yourself, this works fine on x86. Therefore this is likely VERY related
> to ARM, or at least your specific ARM platform configuration.
>
> You also mention "some differences in the AER Registers", how about you
> tell us what was different there since as I pointed out that could tell
> us if there is some error the device detected that is triggering the
> problem, or better yet could you just send us the lspci -vvv output from
> the problem system. That would give us much more to work with and help
> us to understand what the issue is.
>
> Thanks,
>
> Alex
>
>
>
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