On 2014/8/11 11:15, Jiang Liu wrote:
> Hi Yijing,
> Could you please help to provide detail information about the
> PCI device, such as "lscpi -vvv"? It seems like that "Phantom
> Functions" is enabled with these PCI devices.
> Thanks!
> Gerry
My pleasure!
Gerry, the lspci info is below:
HP C7000 Server: The problem devices id: 04:00.4 04:00.5 04:00.6 04:00.7
04:00.0 Ethernet controller: Emulex Corporation OneConnect 10Gb NIC (be3) (rev
01)
Subsystem: Hewlett-Packard Company Device 337b
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 32
Region 0: Memory at ebff0000 (64-bit, non-prefetchable) [size=16K]
Region 2: Memory at ebfc0000 (64-bit, non-prefetchable) [size=128K]
Region 4: Memory at ebfa0000 (64-bit, non-prefetchable) [size=128K]
[virtual] Expansion ROM at dc000000 [disabled] [size=256K]
Capabilities: [40] Power Management version 3
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=375mA
PME(D0-,D1-,D2-,D3hot+,D3cold+)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [48] MSI-X: Enable+ Count=32 Masked-
Vector table: BAR=0 offset=00002000
PBA: BAR=0 offset=00003000
Capabilities: [c0] Express (v2) Endpoint, MSI 00
DevCap: MaxPayload 512 bytes, PhantFunc 0, Latency L0s <1us, L1
<16us
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+
DevCtl: Report errors: Correctable+ Non-Fatal+ Fatal+
Unsupported+
RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop- FLReset-
MaxPayload 256 bytes, MaxReadReq 4096 bytes
DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+
TransPend-
LnkCap: Port #0, Speed 5GT/s, Width x8, 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 5GT/s, Width x8, TrErr- Train- SlotClk+ DLActive-
BWMgmt- ABWMgmt-
DevCap2: Completion Timeout: Not Supported, TimeoutDis-
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-,
Selectable De-emphasis: -6dB
Transmit Margin: Normal Operating Range,
EnterModifiedCompliance- ComplianceSOS-
Compliance De-emphasis: -6dB
LnkSta2: Current De-emphasis Level: -3.5dB,
EqualizationComplete-, EqualizationPhase1-
EqualizationPhase2-, EqualizationPhase3-,
LinkEqualizationRequest-
Capabilities: [b8] Vital Product Data
Product Name: 647586-B21, NIC PF
Read-only fields:
[PN] Part number: 647584-001
[SN] Serial number: H3534360ZX
[V0] Vendor specific: VA00000000
[EC] Engineering changes: A-5120
[FN] Unknown: 36 34 39 39 34 30 2d 30 30 31 0d
[VA] Vendor specific: 649940-001\x0d
[VB] Vendor specific: PW=10W; PCIE X8 GEN 2
[V1] Vendor specific: HP FlexFabric 10Gb 2-port 554FLB
Adapter
[V2] Vendor specific: 554FLB
[V4] Vendor specific: 0
[V5] Vendor specific: OCl11102-F4-HP
[V6] Vendor specific: A0:1,D0:1
[RV] Reserved: checksum good, 42 byte(s) reserved
End
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: [180 v1] Single Root I/O Virtualization (SR-IOV)
IOVCap: Migration-, Interrupt Message Number: 000
IOVCtl: Enable- Migration- Interrupt- MSE- ARIHierarchy+
IOVSta: Migration-
Initial VFs: 0, Total VFs: 0, Number of VFs: 0, Function
Dependency Link: 00
VF offset: 0, stride: 1, Device ID: 0710
Supported Page Size: 00000557, System Page Size: 00000001
Region 0: Memory at 0000000000000000 (64-bit, non-prefetchable)
VF Migration: offset: 00000000, BIR: 0
Capabilities: [160 v1] Alternative Routing-ID Interpretation (ARI)
ARICap: MFVC- ACS-, Next Function: 1
ARICtl: MFVC- ACS-, Function Group: 0
Capabilities: [168 v1] Device Serial Number f0-92-1c-ff-fe-16-8d-48
Capabilities: [12c v1] Transaction Processing Hints
No steering table available
Kernel driver in use: be2net
Kernel modules: be2net
04:00.1 Ethernet controller: Emulex Corporation OneConnect 10Gb NIC (be3) (rev
01)
Subsystem: Hewlett-Packard Company Device 337b
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 36
Region 0: Memory at ebf90000 (64-bit, non-prefetchable) [size=16K]
Region 2: Memory at ebf60000 (64-bit, non-prefetchable) [size=128K]
Region 4: Memory at ebf40000 (64-bit, non-prefetchable) [size=128K]
[virtual] Expansion ROM at dc040000 [disabled] [size=256K]
Capabilities: [40] Power Management version 3
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=375mA
PME(D0-,D1-,D2-,D3hot+,D3cold+)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [48] MSI-X: Enable+ Count=32 Masked-
Vector table: BAR=0 offset=00002000
PBA: BAR=0 offset=00003000
Capabilities: [c0] Express (v2) Endpoint, MSI 00
DevCap: MaxPayload 512 bytes, PhantFunc 0, Latency L0s <1us, L1
<16us
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+
DevCtl: Report errors: Correctable+ Non-Fatal+ Fatal+
Unsupported+
RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop- FLReset-
MaxPayload 256 bytes, MaxReadReq 4096 bytes
DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+
TransPend-
LnkCap: Port #0, Speed 5GT/s, Width x8, 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 5GT/s, Width x8, TrErr- Train- SlotClk+ DLActive-
BWMgmt- ABWMgmt-
DevCap2: Completion Timeout: Not Supported, 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: -3.5dB,
EqualizationComplete-, EqualizationPhase1-
EqualizationPhase2-, EqualizationPhase3-,
LinkEqualizationRequest-
Capabilities: [b8] Vital Product Data
Product Name: 647586-B21, NIC PF
Read-only fields:
[PN] Part number: 647584-001
[SN] Serial number: H3534360ZX
[V0] Vendor specific: VA00000000
[EC] Engineering changes: A-5120
[FN] Unknown: 36 34 39 39 34 30 2d 30 30 31 0d
[VA] Vendor specific: 649940-001\x0d
[VB] Vendor specific: PW=10W; PCIE X8 GEN 2
[V1] Vendor specific: HP FlexFabric 10Gb 2-port 554FLB
Adapter
[V2] Vendor specific: 554FLB
[V4] Vendor specific: 1
[V5] Vendor specific: OCl11102-F4-HP
[V6] Vendor specific: A0:1,D0:1
[RV] Reserved: checksum good, 42 byte(s) reserved
End
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: [180 v1] Single Root I/O Virtualization (SR-IOV)
IOVCap: Migration-, Interrupt Message Number: 000
IOVCtl: Enable- Migration- Interrupt- MSE- ARIHierarchy-
IOVSta: Migration-
Initial VFs: 0, Total VFs: 0, Number of VFs: 0, Function
Dependency Link: 01
VF offset: 0, stride: 1, Device ID: 0710
Supported Page Size: 00000557, System Page Size: 00000001
Region 0: Memory at 0000000000000000 (64-bit, non-prefetchable)
VF Migration: offset: 00000000, BIR: 0
Capabilities: [160 v1] Alternative Routing-ID Interpretation (ARI)
ARICap: MFVC- ACS-, Next Function: 2
ARICtl: MFVC- ACS-, Function Group: 0
Capabilities: [168 v1] Device Serial Number f0-92-1c-ff-fe-16-8d-48
Capabilities: [12c v1] Transaction Processing Hints
No steering table available
Kernel driver in use: be2net
Kernel modules: be2net
04:00.2 Mass storage controller: Emulex Corporation OneConnect 10Gb iSCSI
Initiator (be3) (rev 01)
Subsystem: Hewlett-Packard Company Device 337b
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 C routed to IRQ 37
Region 0: Memory at ebf30000 (64-bit, non-prefetchable) [size=16K]
Region 2: Memory at ebf00000 (64-bit, non-prefetchable) [size=128K]
Region 4: Memory at ebee0000 (64-bit, non-prefetchable) [size=128K]
[virtual] Expansion ROM at dc080000 [disabled] [size=256K]
Capabilities: [40] Power Management version 3
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=375mA
PME(D0-,D1-,D2-,D3hot+,D3cold+)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [48] MSI-X: Enable- Count=8 Masked-
Vector table: BAR=0 offset=00002000
PBA: BAR=0 offset=00003000
Capabilities: [c0] Express (v2) Endpoint, MSI 00
DevCap: MaxPayload 512 bytes, PhantFunc 0, Latency L0s <1us, L1
<16us
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+
DevCtl: Report errors: Correctable- Non-Fatal+ Fatal+
Unsupported-
RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop- FLReset-
MaxPayload 256 bytes, MaxReadReq 4096 bytes
DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+
TransPend-
LnkCap: Port #0, Speed 5GT/s, Width x8, 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 5GT/s, Width x8, TrErr- Train- SlotClk+ DLActive-
BWMgmt- ABWMgmt-
DevCap2: Completion Timeout: Not Supported, 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: -3.5dB,
EqualizationComplete-, EqualizationPhase1-
EqualizationPhase2-, EqualizationPhase3-,
LinkEqualizationRequest-
Capabilities: [b8] Vital Product Data
Product Name: 647586-B21, iSCSI PF
Read-only fields:
[PN] Part number: 647584-001
[SN] Serial number: H3534360ZX
[V0] Vendor specific: VA00000000
[EC] Engineering changes: A-5120
[FN] Unknown: 36 34 39 39 34 30 2d 30 30 31 0d
[VA] Vendor specific: 649940-001\x0d
[VB] Vendor specific: PW=10W; PCIE X8 GEN 2
[V1] Vendor specific: HP FlexFabric 10Gb 2-port 554FLB
Adapter
[V2] Vendor specific: 554FLB
[V4] Vendor specific: 0
[V5] Vendor specific: OCl11102-F4-HP
[V6] Vendor specific: A0:1,D0:1
[RV] Reserved: checksum good, 40 byte(s) reserved
End
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: [180 v1] Single Root I/O Virtualization (SR-IOV)
IOVCap: Migration-, Interrupt Message Number: 000
IOVCtl: Enable- Migration- Interrupt- MSE- ARIHierarchy-
IOVSta: Migration-
Initial VFs: 0, Total VFs: 0, Number of VFs: 0, Function
Dependency Link: 02
VF offset: 0, stride: 1, Device ID: 0712
Supported Page Size: 00000557, System Page Size: 00000001
Region 0: Memory at 0000000000000000 (64-bit, non-prefetchable)
VF Migration: offset: 00000000, BIR: 0
Capabilities: [160 v1] Alternative Routing-ID Interpretation (ARI)
ARICap: MFVC- ACS-, Next Function: 3
ARICtl: MFVC- ACS-, Function Group: 0
Capabilities: [168 v1] Device Serial Number f0-92-1c-ff-fe-16-8d-48
Capabilities: [12c v1] Transaction Processing Hints
No steering table available
Kernel driver in use: be2iscsi
Kernel modules: be2iscsi
04:00.3 Mass storage controller: Emulex Corporation OneConnect 10Gb iSCSI
Initiator (be3) (rev 01)
Subsystem: Hewlett-Packard Company Device 337b
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 D routed to IRQ 38
Region 0: Memory at ebed0000 (64-bit, non-prefetchable) [size=16K]
Region 2: Memory at ebea0000 (64-bit, non-prefetchable) [size=128K]
Region 4: Memory at ebe80000 (64-bit, non-prefetchable) [size=128K]
[virtual] Expansion ROM at dc0c0000 [disabled] [size=256K]
Capabilities: [40] Power Management version 3
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=375mA
PME(D0-,D1-,D2-,D3hot+,D3cold+)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [48] MSI-X: Enable- Count=8 Masked-
Vector table: BAR=0 offset=00002000
PBA: BAR=0 offset=00003000
Capabilities: [c0] Express (v2) Endpoint, MSI 00
DevCap: MaxPayload 512 bytes, PhantFunc 0, Latency L0s <1us, L1
<16us
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+
DevCtl: Report errors: Correctable- Non-Fatal+ Fatal+
Unsupported-
RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop- FLReset-
MaxPayload 256 bytes, MaxReadReq 4096 bytes
DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+
TransPend-
LnkCap: Port #0, Speed 5GT/s, Width x8, 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 5GT/s, Width x8, TrErr- Train- SlotClk+ DLActive-
BWMgmt- ABWMgmt-
DevCap2: Completion Timeout: Not Supported, 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: -3.5dB,
EqualizationComplete-, EqualizationPhase1-
EqualizationPhase2-, EqualizationPhase3-,
LinkEqualizationRequest-
Capabilities: [b8] Vital Product Data
Product Name: 647586-B21, iSCSI PF
Read-only fields:
[PN] Part number: 647584-001
[SN] Serial number: H3534360ZX
[V0] Vendor specific: VA00000000
[EC] Engineering changes: A-5120
[FN] Unknown: 36 34 39 39 34 30 2d 30 30 31 0d
[VA] Vendor specific: 649940-001\x0d
[VB] Vendor specific: PW=10W; PCIE X8 GEN 2
[V1] Vendor specific: HP FlexFabric 10Gb 2-port 554FLB
Adapter
[V2] Vendor specific: 554FLB
[V4] Vendor specific: 1
[V5] Vendor specific: OCl11102-F4-HP
[V6] Vendor specific: A0:1,D0:1
[RV] Reserved: checksum good, 40 byte(s) reserved
End
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: [180 v1] Single Root I/O Virtualization (SR-IOV)
IOVCap: Migration-, Interrupt Message Number: 000
IOVCtl: Enable- Migration- Interrupt- MSE- ARIHierarchy-
IOVSta: Migration-
Initial VFs: 0, Total VFs: 0, Number of VFs: 0, Function
Dependency Link: 03
VF offset: 0, stride: 1, Device ID: 0712
Supported Page Size: 00000557, System Page Size: 00000001
Region 0: Memory at 0000000000000000 (64-bit, non-prefetchable)
VF Migration: offset: 00000000, BIR: 0
Capabilities: [160 v1] Alternative Routing-ID Interpretation (ARI)
ARICap: MFVC- ACS-, Next Function: 0
ARICtl: MFVC- ACS-, Function Group: 0
Capabilities: [168 v1] Device Serial Number f0-92-1c-ff-fe-16-8d-48
Capabilities: [12c v1] Transaction Processing Hints
No steering table available
Kernel driver in use: be2iscsi
Kernel modules: be2iscsi
Huawei Storage Server: devices id: 03:07.1 03:07.2 03:07.3
03:00.0 Bridge: PLX Technology, Inc. Device 8725 (rev ca)
Subsystem: PLX Technology, Inc. Device 87b0
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 94
Region 0: Memory at 94100000 (32-bit, non-prefetchable) [size=256K]
Region 2: Memory at 180000000000 (64-bit, prefetchable) [size=4T]
Region 4: Memory at 90000000 (32-bit, non-prefetchable) [size=64M]
Region 5: Memory at 94000000 (32-bit, non-prefetchable) [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=0 PME-
Capabilities: [48] MSI: Enable+ Count=1/8 Maskable+ 64bit+
Address: 00000000fee00000 Data: 4063
Masking: 000000fe Pending: 00000000
Capabilities: [68] Express (v2) Endpoint, MSI 00
DevCap: MaxPayload 512 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 256 bytes, MaxReadReq 128 bytes
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr-
TransPend-
LnkCap: Port #1, Speed 8GT/s, Width x8, ASPM L0s L1, Latency L0
<2us, L1 <4us
ClockPM- Surprise- LLActRep- BwNot-
LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk-
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 8GT/s, Width x8, TrErr- Train- SlotClk- DLActive-
BWMgmt- ABWMgmt-
DevCap2: Completion Timeout: Not Supported, TimeoutDis-
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
LnkCtl2: Target Link Speed: 8GT/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: [c8] Vendor Specific Information: Len=00 <?>
Capabilities: [100 v1] Device Serial Number ca-87-00-10-b5-df-0e-00
Capabilities: [fb4 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: 1f, GenCap+ CGenEn- ChkCap+ ChkEn-
Capabilities: [148 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-
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Thanks!
Yijing.
>
> On 2014/8/11 10:54, Yijing Wang wrote:
>> We found some strange devices in HP C7000 and Huawei Server. These devices
>> can not be enumerated by OS, but they still did DMA read/write without OS
>> management. Because iommu will not create the DMA mapping for these devices,
>> the DMA read/write will be blocked by iommu hardware.
>>
>> Eg.
>> \-[0000:00]-+-00.0 Intel Corporation Xeon E5/Core i7 DMI2
>> +-01.0-[11]--
>> +-01.1-[02]--
>> +-02.0-[04]--+-00.0 Emulex Corporation OneConnect
>> 10Gb NIC (be3)
>> | +-00.1 Emulex Corporation OneConnect 10Gb NIC
>> (be3)
>> | +-00.2 Emulex Corporation OneConnect 10Gb iSCSI
>> Initiator (be3)
>> | \-00.3 Emulex Corporation OneConnect 10Gb iSCSI
>> Initiator (be3)
>> +-02.1-[12]--
>> Kernel only found four devices in bus 0x04, but we found following DMA
>> errors in dmesg.
>>
>> [ 1438.477262] DRHD: handling fault status reg 402
>> [ 1438.498278] DMAR:[DMA Write] Request device [04:00.4] fault addr bdf70000
>> [ 1438.498280] DMAR:[fault reason 02] Present bit in context entry is clear
>> [ 1438.566458] DMAR:[DMA Write] Request device [04:00.5] fault addr bdf70000
>> [ 1438.566460] DMAR:[fault reason 02] Present bit in context entry is clear
>> [ 1438.635211] DMAR:[DMA Write] Request device [04:00.6] fault addr bdf70000
>> [ 1438.635213] DMAR:[fault reason 02] Present bit in context entry is clear
>> [ 1438.703849] DMAR:[DMA Write] Request device [04:00.7] fault addr bdf70000
>> [ 1438.703851] DMAR:[fault reason 02] Present bit in context entry is clear
>>
>> Signed-off-by: Yijing Wang <wangyij...@huawei.com>
>> ---
>> arch/x86/include/asm/iommu.h | 2 ++
>> arch/x86/kernel/pci-dma.c | 8 ++++++++
>> drivers/iommu/intel-iommu.c | 41
>> +++++++++++++++++++++++++++++++++++++++++
>> 3 files changed, 51 insertions(+), 0 deletions(-)
>>
>> diff --git a/arch/x86/include/asm/iommu.h b/arch/x86/include/asm/iommu.h
>> index 345c99c..5e3a2d8 100644
>> --- a/arch/x86/include/asm/iommu.h
>> +++ b/arch/x86/include/asm/iommu.h
>> @@ -5,6 +5,8 @@ extern struct dma_map_ops nommu_dma_ops;
>> extern int force_iommu, no_iommu;
>> extern int iommu_detected;
>> extern int iommu_pass_through;
>> +extern int iommu_pt_force_bus;
>> +extern int iommu_pt_force_domain;
>>
>> /* 10 seconds */
>> #define DMAR_OPERATION_TIMEOUT ((cycles_t) tsc_khz*10*1000)
>> diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
>> index a25e202..bf21d97 100644
>> --- a/arch/x86/kernel/pci-dma.c
>> +++ b/arch/x86/kernel/pci-dma.c
>> @@ -44,6 +44,8 @@ int iommu_detected __read_mostly = 0;
>> * guests and not for driver dma translation.
>> */
>> int iommu_pass_through __read_mostly;
>> +int iommu_pt_force_bus = -1;
>> +int iommu_pt_force_domain = -1;
>>
>> extern struct iommu_table_entry __iommu_table[], __iommu_table_end[];
>>
>> @@ -146,6 +148,7 @@ void dma_generic_free_coherent(struct device *dev,
>> size_t size, void *vaddr,
>> */
>> static __init int iommu_setup(char *p)
>> {
>> + char *end;
>> iommu_merge = 1;
>>
>> if (!p)
>> @@ -192,6 +195,11 @@ static __init int iommu_setup(char *p)
>> #endif
>> if (!strncmp(p, "pt", 2))
>> iommu_pass_through = 1;
>> + if (!strncmp(p, "pt_force=", 9)) {
>> + iommu_pass_through = 1;
>> + iommu_pt_force_domain = simple_strtol(p+9, &end, 0);
>> + iommu_pt_force_bus = simple_strtol(end+1, NULL, 0);
>> + }
>>
>> gart_parse_options(p);
>>
>> diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
>> index d1f5caa..49757f1 100644
>> --- a/drivers/iommu/intel-iommu.c
>> +++ b/drivers/iommu/intel-iommu.c
>> @@ -2705,6 +2705,47 @@ static int __init
>> iommu_prepare_static_identity_mapping(int hw)
>> return ret;
>> }
>>
>> + /* We found some strange devices in HP c7000 and other platforms that
>> + * can not be enumerated by OS, but they did DMA read/write without
>> + * driver management, so we should create the pt mapping for these
>> + * devices to avoid DMA errors. Add iommu=pt_force=segment:busnum to
>> + * force to do pt context mapping in the bus number.
>> + */
>> + if (iommu_pt_force_bus >= 0 && iommu_pt_force_bus >= 0) {
>> + int found = 0;
>> +
>> + iommu = NULL;
>> + for_each_active_iommu(iommu, drhd) {
>> + if (iommu_pt_force_domain != drhd->segment)
>> + continue;
>> +
>> + for_each_active_dev_scope(drhd->devices,
>> drhd->devices_cnt, i, dev) {
>> + if (!dev_is_pci(dev))
>> + continue;
>> +
>> + pdev = to_pci_dev(dev);
>> + if (pdev->bus->number == iommu_pt_force_bus ||
>> + (pdev->subordinate
>> + && pdev->subordinate->number
>> <= iommu_pt_force_bus
>> + &&
>> pdev->subordinate->busn_res.end >= iommu_pt_force_bus)) {
>> + found = 1;
>> + break;
>> + }
>> + }
>> +
>> + if (drhd->include_all) {
>> + found = 1;
>> + break;
>> + }
>> + }
>> +
>> + if (found && iommu)
>> + for (i = 0; i < 256; i++)
>> + domain_context_mapping_one(si_domain, iommu,
>> iommu_pt_force_bus,
>> + i, hw ?
>> CONTEXT_TT_PASS_THROUGH :
>> + CONTEXT_TT_MULTI_LEVEL);
>> + }
>> +
>> return 0;
>> }
>>
>>
>
> .
>
--
Thanks!
Yijing
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