I had attached setup.sh script earlier.

I have done minor changes, and in-fact I have fixed one thing.





function linux_iter_pci {

                # Argument is the class code

                # TODO: More specifically match against only class codes in
the grep

                # step.

                lspci -D -mm -n | grep $1 | tr -d '"' | awk -F " " '{print
$1}'

}



Somehow above parsing work for us, and original SPDK setup.sh way of
parsing fails.



But anyway, I just attached for your reference



Regards,

Oza.



*From:* Oza Oza [mailto:oza.oza(a)broadcom.com]
*Sent:* Thursday, August 31, 2017 12:18 AM
*To:* 'Storage Performance Development Kit'; 'Oza Pawandeep'
*Subject:* RE: [SPDK] PCI hotplug and SPDK



Exactly, that’s the whole point.

There are no root ports appearing in lspci output.



They will appear only after pci_rescan_bus  (scanning the root port)

And even if they don’t appear, SPDK script does something with it, probably
I think vfio.



Regards,

Oza.

*From:* SPDK [mailto:spdk-bounces(a)lists.01.org <spdk-bounces(a)lists.01.org>] *On
Behalf Of *Harris, James R
*Sent:* Thursday, August 31, 2017 12:09 AM
*To:* Oza Pawandeep
*Cc:* Storage Performance Development Kit
*Subject:* Re: [SPDK] PCI hotplug and SPDK



Hi Oza,



Where are the root ports associated with these empty slots?  I only see
three root ports in your lspci output – two for the NVMe devices, another
for the multi-function Ethernet device.



-Jim





*From: *Oza Pawandeep <oza.pawandeep(a)gmail.com>
*Date: *Wednesday, August 30, 2017 at 11:17 AM
*To: *James Harris <james.r.harris(a)intel.com>
*Cc: *Storage Performance Development Kit <spdk(a)lists.01.org>
*Subject: *Re: [SPDK] PCI hotplug and SPDK



Hi Jim,



Ok, so we have 4 PCIe slots.

I have kept 2 slots with NVMe driver and 2 slots empty.



Regards,

Oza.



On Wed, Aug 30, 2017 at 9:00 PM, Harris, James R <james.r.harris(a)intel.com>
wrote:

Hi Oza,



I am confused – why do the NVMe devices show up in your lspci output if
they are not attached?



-Jim





*From: *SPDK <spdk-bounces(a)lists.01.org> on behalf of Oza Oza <
oza.oza(a)broadcom.com>
*Reply-To: *Storage Performance Development Kit <spdk(a)lists.01.org>
*Date: *Wednesday, August 30, 2017 at 8:20 AM
*To: *Storage Performance Development Kit <spdk(a)lists.01.org>
*Cc: *"oza.pawandeep(a)gmail.com" <oza.pawandeep(a)gmail.com>
*Subject: *Re: [SPDK] PCI hotplug and SPDK



root(a)bcm958742k:~# lspci -vvvx

0001:00:00.0 PCI bridge: Broadcom Corporation Device 0000 (prog-if 00
[Normal decode])

        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

        Interrupt: pin A routed to IRQ 378

        Bus: primary=00, secondary=01, subordinate=01, sec-latency=0

        I/O behind bridge: 00000000-00000fff

        Memory behind bridge: 00000000-000fffff

        Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff

        Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- <SERR- <PERR-

        BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-

                PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-

        Capabilities: [48] 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: [ac] Express (v2) Root Port (Slot-), MSI 00

                DevCap: MaxPayload 256 bytes, PhantFunc 0

                        ExtTag+ RBE+

                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 8GT/s, Width x4, ASPM L0s L1, Exit
Latency L0s <2us, L1 <4us

                        ClockPM+ Surprise- LLActRep- BwNot+ ASPMOptComp+

                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk-

                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-

                LnkSta: Speed 8GT/s, Width x4, TrErr- Train- SlotClk+
DLActive- BWMgmt- ABWMgmt+

                RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna-
CRSVisible+

                RootCap: CRSVisible+

                RootSta: PME ReqID 0000, PMEStatus- PMEPending-

                DevCap2: Completion Timeout: Range ABCD, TimeoutDis+, LTR+,
OBFF Via WAKE# ARIFwd+

                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-,
LTR-, OBFF Disabled ARIFwd+

                LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance-
SpeedDis-

                         Transmit Margin: Normal Operating Range,
EnterModifiedCompliance- ComplianceSOS-

                         Compliance De-emphasis: -6dB

                LnkSta2: Current De-emphasis Level: -3.5dB,
EqualizationComplete+, EqualizationPhase1+

                         EqualizationPhase2+, EqualizationPhase3+,
LinkEqualizationRequest-

        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] Vendor Specific Information: ID=0000 Rev=0
Len=028 <?>

        Capabilities: [240 v1] L1 PM Substates

                L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+
L1_PM_Substates+

                          PortCommonModeRestoreTime=8us
PortTPowerOnTime=10us

        Capabilities: [300 v1] #19

lspci: Unable to load libkmod resources: error -12

00: e4 14 00 00 06 00 10 00 00 00 04 06 00 00 01 00

10: 00 00 00 00 00 00 00 00 00 01 01 00 00 00 00 00

20: 00 00 00 00 f1 ff 01 00 00 00 00 00 00 00 00 00

30: 00 00 00 00 48 00 00 00 00 00 00 00 7a 01 00 00



0001:01:00.0 Non-Volatile memory controller: Intel Corporation PCIe Data
Center SSD (rev 01) (prog-if 02 [NVM Express])

        Subsystem: Intel Corporation SSD 750 Series [Add-in Card]

        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

        Interrupt: pin A routed to IRQ 378

        Region 0: Memory at 480010000 (64-bit, non-prefetchable) [size=16K]

        [virtual] Expansion ROM at 480000000 [disabled] [size=64K]

        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: [50] MSI-X: Enable+ Count=32 Masked-

                Vector table: BAR=0 offset=00002000

                PBA: BAR=0 offset=00003000

        Capabilities: [60] Express (v2) Endpoint, MSI 00

                DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s
<4us, L1 <4us

                        ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset+
SlotPowerLimit 0.000W

                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 8GT/s, Width x4, ASPM L0s L1, Exit
Latency L0s <4us, L1 <4us

                        ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp+

                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk-

                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-

                LnkSta: Speed 8GT/s, Width x4, TrErr- Train- SlotClk-
DLActive- BWMgmt- ABWMgmt-

                DevCap2: Completion Timeout: Range ABCD, TimeoutDis+, LTR-,
OBFF Not Supported

                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-,
LTR-, OBFF Disabled

                LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance-
SpeedDis-

                         Transmit Margin: Normal Operating Range,
EnterModifiedCompliance- ComplianceSOS-

                         Compliance De-emphasis: -6dB

                LnkSta2: Current De-emphasis Level: -6dB,
EqualizationComplete+, EqualizationPhase1+

                         EqualizationPhase2+, EqualizationPhase3+,
LinkEqualizationRequest-

        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: [150 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: [180 v1] Power Budgeting <?>

        Capabilities: [190 v1] Alternative Routing-ID Interpretation (ARI)

                ARICap: MFVC- ACS-, Next Function: 0

                ARICtl: MFVC- ACS-, Function Group: 0

        Capabilities: [270 v1] Device Serial Number 55-cd-2e-41-4d-25-b3-9e

        Capabilities: [2a0 v1] #19

        Kernel driver in use: nvme

00: 86 80 53 09 06 04 10 00 01 02 08 01 00 00 00 00

10: 04 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00

20: 00 00 00 00 00 00 00 00 00 00 00 00 86 80 0d 37

30: 00 00 00 00 40 00 00 00 00 00 00 00 7a 01 00 00



0007:00:00.0 PCI bridge: Broadcom Corporation Device 0000 (prog-if 00
[Normal decode])

        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

        Interrupt: pin A routed to IRQ 380

        Bus: primary=00, secondary=01, subordinate=01, sec-latency=0

        I/O behind bridge: 00000000-00000fff

        Memory behind bridge: 00000000-000fffff

        Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff

        Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- <SERR- <PERR-

        BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-

                PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-

        Capabilities: [48] 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: [ac] Express (v2) Root Port (Slot-), MSI 00

                DevCap: MaxPayload 256 bytes, PhantFunc 0

                        ExtTag+ RBE+

                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 8GT/s, Width x4, ASPM L0s L1, Exit
Latency L0s <2us, L1 <4us

                        ClockPM+ Surprise- LLActRep- BwNot+ ASPMOptComp+

                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk-

                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-

                LnkSta: Speed 8GT/s, Width x1, TrErr- Train- SlotClk+
DLActive- BWMgmt- ABWMgmt+

                RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna-
CRSVisible+

                RootCap: CRSVisible+

                RootSta: PME ReqID 0000, PMEStatus- PMEPending-

                DevCap2: Completion Timeout: Range ABCD, TimeoutDis+, LTR+,
OBFF Via WAKE# ARIFwd+

                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-,
LTR-, OBFF Disabled ARIFwd+

                LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance-
SpeedDis-

                         Transmit Margin: Normal Operating Range,
EnterModifiedCompliance- ComplianceSOS-

                         Compliance De-emphasis: -6dB

                LnkSta2: Current De-emphasis Level: -3.5dB,
EqualizationComplete+, EqualizationPhase1+

                         EqualizationPhase2+, EqualizationPhase3+,
LinkEqualizationRequest-

        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] Vendor Specific Information: ID=0000 Rev=0
Len=028 <?>

        Capabilities: [240 v1] L1 PM Substates

                L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+
L1_PM_Substates+

                          PortCommonModeRestoreTime=8us
PortTPowerOnTime=10us

        Capabilities: [300 v1] #19

00: e4 14 00 00 06 00 10 00 00 00 04 06 00 00 01 00

10: 00 00 00 00 00 00 00 00 00 01 01 00 00 00 00 00

20: 00 00 00 00 f1 ff 01 00 00 00 00 00 00 00 00 00

30: 00 00 00 00 48 00 00 00 00 00 00 00 7c 01 00 00



0007:01:00.0 Non-Volatile memory controller: Intel Corporation PCIe Data
Center SSD (rev 01) (prog-if 02 [NVM Express])

        Subsystem: Intel Corporation SSD 750 Series [Add-in Card]

        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

        Interrupt: pin A routed to IRQ 380

        Region 0: Memory at 780010000 (64-bit, non-prefetchable) [size=16K]

        [virtual] Expansion ROM at 780000000 [disabled] [size=64K]

        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: [50] MSI-X: Enable+ Count=32 Masked-

                Vector table: BAR=0 offset=00002000

                PBA: BAR=0 offset=00003000

        Capabilities: [60] Express (v2) Endpoint, MSI 00

                DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s
<4us, L1 <4us

                        ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset+
SlotPowerLimit 0.000W

                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 8GT/s, Width x4, ASPM L0s L1, Exit
Latency L0s <4us, L1 <4us

                        ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp+

                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk-

                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-

                LnkSta: Speed 8GT/s, Width x1, TrErr- Train- SlotClk-
DLActive- BWMgmt- ABWMgmt-

                DevCap2: Completion Timeout: Range ABCD, TimeoutDis+, LTR-,
OBFF Not Supported

                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-,
LTR-, OBFF Disabled

                LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance-
SpeedDis-

                         Transmit Margin: Normal Operating Range,
EnterModifiedCompliance- ComplianceSOS-

                         Compliance De-emphasis: -6dB

                LnkSta2: Current De-emphasis Level: -6dB,
EqualizationComplete+, EqualizationPhase1+

                         EqualizationPhase2+, EqualizationPhase3+,
LinkEqualizationRequest-

        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: [150 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: [180 v1] Power Budgeting <?>

        Capabilities: [190 v1] Alternative Routing-ID Interpretation (ARI)

                ARICap: MFVC- ACS-, Next Function: 0

                ARICtl: MFVC- ACS-, Function Group: 0

        Capabilities: [270 v1] Device Serial Number 55-cd-2e-41-4d-25-bf-ba

        Capabilities: [2a0 v1] #19

        Kernel driver in use: nvme

00: 86 80 53 09 06 04 10 00 01 02 08 01 00 00 00 00

10: 04 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00

20: 00 00 00 00 00 00 00 00 00 00 00 00 86 80 0d 37

30: 00 00 00 00 40 00 00 00 00 00 00 00 7c 01 00 00



0008:00:00.0 PCI bridge: Broadcom Corporation Device 16f0 (rev 01) (prog-if
00 [Normal decode])

        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-

        Bus: primary=00, secondary=01, subordinate=01, sec-latency=0

        I/O behind bridge: 00000000-00000fff

        Memory behind bridge: fff00000-000fffff

        Prefetchable memory behind bridge: 0000000010000000-00000000104fffff

        Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- <SERR- <PERR-

        BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-

                PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-

        Capabilities: [48] 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: [58] #00 [0000]

00: e4 14 f0 16 00 00 10 00 01 00 00 02 00 00 01 00

10: 00 00 00 00 00 00 00 00 00 01 01 00 00 00 00 00

20: f0 ff 00 00 01 10 41 10 00 00 00 00 00 00 00 00

30: 00 00 00 00 48 00 00 00 00 00 00 00 00 00 00 00



0008:01:00.0 Ethernet controller: Broadcom Corporation Device 16f0 (rev 01)

        Subsystem: Broadcom Corporation Device 16f0

        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+

        Region 0: Memory at 10400000 (64-bit, prefetchable) [disabled]
[size=64K]

        Region 2: Memory at 10000000 (64-bit, prefetchable) [disabled]
[size=1M]

        Region 4: Memory at 10440000 (64-bit, prefetchable) [disabled]
[size=4K]

        Capabilities: [48] 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: [58] MSI: Enable- Count=1/8 Maskable- 64bit+

                Address: 0000000000000000  Data: 0000

        Capabilities: [a0] MSI-X: Enable- Count=148 Masked-

                Vector table: BAR=4 offset=00000000

                PBA: BAR=4 offset=00001000

        Capabilities: [ac] Express (v2) Endpoint, MSI 00

                DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s
<4us, L1 <64us

                        ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+
SlotPowerLimit 0.000W

                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 5GT/s, Width x4, ASPM L0s L1, Exit
Latency L0s <2us, L1 <4us

                        ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+

                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- 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+, LTR+,
OBFF Not Supported

                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-,
LTR-, OBFF Disabled

                LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance-
SpeedDis-

                         Transmit Margin: Normal Operating Range,
EnterModifiedCompliance- ComplianceSOS-

                         Compliance De-emphasis: -6dB

                LnkSta2: Current De-emphasis Level: -6dB,
EqualizationComplete-, EqualizationPhase1-

                         EqualizationPhase2-, EqualizationPhase3-,
LinkEqualizationRequest-

        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: [13c v1] Device Serial Number 00-10-18-ff-fe-ad-05-00

        Capabilities: [150 v1] Power Budgeting <?>

        Capabilities: [160 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: [180 v1] Vendor Specific Information: ID=0000 Rev=0
Len=028 <?>

        Capabilities: [1b0 v1] Latency Tolerance Reporting

                Max snoop latency: 0ns

                Max no snoop latency: 0ns

        Capabilities: [1b8 v1] Alternative Routing-ID Interpretation (ARI)

                ARICap: MFVC- ACS-, Next Function: 1

                ARICtl: MFVC- ACS-, Function Group: 0

00: e4 14 f0 16 00 00 18 00 01 00 00 02 00 00 80 00

10: 0c 00 40 10 00 00 00 00 0c 00 00 10 00 00 00 00

20: 0c 00 44 10 00 00 00 00 00 00 00 00 e4 14 f0 16

30: 00 00 00 00 48 00 00 00 00 00 00 00 00 00 00 00



0008:01:00.1 Ethernet controller: Broadcom Corporation Device 16f0 (rev 01)

        Subsystem: Broadcom Corporation Device 16f0

        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+

        Region 0: Memory at 10410000 (64-bit, prefetchable) [disabled]
[size=64K]

        Region 2: Memory at 10100000 (64-bit, prefetchable) [disabled]
[size=1M]

        Region 4: Memory at 10441000 (64-bit, prefetchable) [disabled]
[size=4K]

        Capabilities: [48] 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: [58] MSI: Enable- Count=1/8 Maskable- 64bit+

                Address: 0000000000000000  Data: 0000

        Capabilities: [a0] MSI-X: Enable- Count=148 Masked-

                Vector table: BAR=4 offset=00000000

                PBA: BAR=4 offset=00001000

        Capabilities: [ac] Express (v2) Endpoint, MSI 00

                DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s
<4us, L1 <64us

                       ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+
SlotPowerLimit 0.000W

                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 5GT/s, Width x4, ASPM L0s L1, Exit
Latency L0s <2us, L1 <4us

                        ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+

                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- 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+, LTR+,
OBFF Not Supported

                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-,
LTR-, OBFF Disabled

                LnkSta2: Current De-emphasis Level: -6dB,
EqualizationComplete-, EqualizationPhase1-

                         EqualizationPhase2-, EqualizationPhase3-,
LinkEqualizationRequest-

        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: [13c v1] Device Serial Number 00-10-18-ff-fe-ad-05-01

        Capabilities: [150 v1] Power Budgeting <?>

        Capabilities: [180 v1] Vendor Specific Information: ID=0000 Rev=0
Len=028 <?>

        Capabilities: [1b8 v1] Alternative Routing-ID Interpretation (ARI)

                ARICap: MFVC- ACS-, Next Function: 2

                ARICtl: MFVC- ACS-, Function Group: 0

00: e4 14 f0 16 00 00 18 00 01 00 00 02 00 00 80 00

10: 0c 00 41 10 00 00 00 00 0c 00 10 10 00 00 00 00

20: 0c 10 44 10 00 00 00 00 00 00 00 00 e4 14 f0 16

30: 00 00 00 00 48 00 00 00 00 00 00 00 00 00 00 00



0008:01:00.2 Ethernet controller: Broadcom Corporation Device 16f0 (rev 01)

        Subsystem: Broadcom Corporation Device 16f0

        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+

        Region 0: Memory at 10420000 (64-bit, prefetchable) [disabled]
[size=64K]

        Region 2: Memory at 10200000 (64-bit, prefetchable) [disabled]
[size=1M]

        Region 4: Memory at 10442000 (64-bit, prefetchable) [disabled]
[size=4K]

        Capabilities: [48] 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: [58] MSI: Enable- Count=1/8 Maskable- 64bit+

                Address: 0000000000000000  Data: 0000

        Capabilities: [a0] MSI-X: Enable- Count=148 Masked-

                Vector table: BAR=4 offset=00000000

                PBA: BAR=4 offset=00001000

        Capabilities: [ac] Express (v2) Endpoint, MSI 00

                DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s
<4us, L1 <64us

                        ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+
SlotPowerLimit 0.000W

                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 5GT/s, Width x4, ASPM L0s L1, Exit
Latency L0s <2us, L1 <4us

                        ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+

                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- 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+, LTR+,
OBFF Not Supported

                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-,
LTR-, OBFF Disabled

                LnkSta2: Current De-emphasis Level: -6dB,
EqualizationComplete-, EqualizationPhase1-

                         EqualizationPhase2-, EqualizationPhase3-,
LinkEqualizationRequest-

        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: [13c v1] Device Serial Number 00-10-18-ff-fe-ad-05-02

        Capabilities: [150 v1] Power Budgeting <?>

        Capabilities: [180 v1] Vendor Specific Information: ID=0000 Rev=0
Len=028 <?>

        Capabilities: [1b8 v1] Alternative Routing-ID Interpretation (ARI)

                ARICap: MFVC- ACS-, Next Function: 3

                ARICtl: MFVC- ACS-, Function Group: 0

00: e4 14 f0 16 00 00 18 00 01 00 00 02 00 00 80 00

10: 0c 00 42 10 00 00 00 00 0c 00 20 10 00 00 00 00

20: 0c 20 44 10 00 00 00 00 00 00 00 00 e4 14 f0 16

30: 00 00 00 00 48 00 00 00 00 00 00 00 00 00 00 00



0008:01:00.3 Ethernet controller: Broadcom Corporation Device 16f0 (rev 01)

        Subsystem: Broadcom Corporation Device 16f0

        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+

        Region 0: Memory at 10430000 (64-bit, prefetchable) [disabled]
[size=64K]

        Region 2: Memory at 10300000 (64-bit, prefetchable) [disabled]
[size=1M]

        Region 4: Memory at 10443000 (64-bit, prefetchable) [disabled]
[size=4K]

        Capabilities: [48] 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: [58] MSI: Enable- Count=1/8 Maskable- 64bit+

                Address: 0000000000000000  Data: 0000

        Capabilities: [a0] MSI-X: Enable- Count=148 Masked-

                Vector table: BAR=4 offset=00000000

                PBA: BAR=4 offset=00001000

        Capabilities: [ac] Express (v2) Endpoint, MSI 00

                DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s
<4us, L1 <64us

                        ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+
SlotPowerLimit 0.000W

                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 5GT/s, Width x4, ASPM L0s L1, Exit
Latency L0s <2us, L1 <4us

                        ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+

                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- 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+, LTR+,
OBFF Not Supported

                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-,
LTR-, OBFF Disabled

                LnkSta2: Current De-emphasis Level: -6dB,
EqualizationComplete-, EqualizationPhase1-

                         EqualizationPhase2-, EqualizationPhase3-,
LinkEqualizationRequest-

        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: [13c v1] Device Serial Number 00-10-18-ff-fe-ad-05-03

        Capabilities: [150 v1] Power Budgeting <?>

        Capabilities: [180 v1] Vendor Specific Information: ID=0000 Rev=0
Len=028 <?>

        Capabilities: [1b8 v1] Alternative Routing-ID Interpretation (ARI)

                ARICap: MFVC- ACS-, Next Function: 4

                ARICtl: MFVC- ACS-, Function Group: 0

00: e4 14 f0 16 00 00 18 00 01 00 00 02 00 00 80 00

10: 0c 00 43 10 00 00 00 00 0c 00 30 10 00 00 00 00

20: 0c 30 44 10 00 00 00 00 00 00 00 00 e4 14 f0 16

30: 00 00 00 00 48 00 00 00 00 00 00 00 00 00 00 00



*From:* Oza Oza [mailto:oza.oza(a)broadcom.com]
*Sent:* Wednesday, August 30, 2017 8:41 PM
*To:* 'Storage Performance Development Kit'
*Cc:* 'oza.pawandeep(a)gmail.com'
*Subject:* RE: [SPDK] PCI hotplug and SPDK



root(a)bcm958742k:~# lspci

0001:00:00.0 PCI bridge: Broadcom Corporation Device 0000

0001:01:00.0 Non-Volatile memory controller: Intel Corporation PCIe Data
Center SSD (rev 01)

0008:00:00.0 PCI bridge: Broadcom Corporation Device 16f0 (rev 01)

0008:01:00.0 Ethernet controller: Broadcom Corporation Device 16f0 (rev 01)

0008:01:00.1 Ethernet controller: Broadcom Corporation Device 16f0 (rev 01)

0008:01:00.2 Ethernet controller: Broadcom Corporation Device 16f0 (rev 01)

0008:01:00.3 Ethernet controller: Broadcom Corporation Device 16f0 (rev 01)



root(a)bcm958742k:~# /usr/share/spdk/scripts/setup.sh

0001:01:00.0 (8086 0953): nvme -> vfio-pci

grep: /usr/share/spdk/scripts/../include/spdk/pci_ids.h: No such[
1520.258498] pci 0008:00:00.0: PCI bridge to [bus 01]

file or directory

[ 1520.267436] pci 0008:00:00.0:   bridge window [mem 0x10000000-0x104fffff
64bit pref]

[ 1520.277225] pci 0000:00:00.0: ignoring class 0x020000 (doesn't match
header type 01)                 >> it is looking to unbind on empty slot as
well.

[ 1520.285324] pci 0000:00:00.0: bridge configuration invalid ([bus
00-00]), reconfiguring

[ 1535.911738] Bad mode in Error handler detected on CPU7, code 0xbf000002
-- SError

[ 1535.919460] Internal error: Oops - bad mode: 0 [#1] SMP

[ 1535.924850] Modules linked in:

[ 1535.928001] CPU: 7 PID: 2108 Comm: lighttpd Not tainted
4.12.0-01624-gbbd4086-dirty #97

[ 1535.936257] Hardware name: Stingray Combo SVK w/PCIe IOMMU (BCM958742K)
(DT)

[ 1535.943527] task: ffff80a1642ce000 task.stack: ffff80a162790000

[ 1535.949634] PC is at 0xffff8baadca0

[ 1535.953230] LR is at 0x40aca8

[ 1535.956290] pc : [<0000ffff8baadca0>] lr : [<000000000040aca8>] pstate:
80000000

[ 1535.963919] sp : 0000ffffca61a970

[ 1535.967337] x29: 0000ffffca61a970 x28: 0000000000000000

[ 1535.972816] x27: 00000000283a9a00 x26: 0000000000000000

[ 1535.978296] x25: 000000000042a3a8 x24: 000000000042a3a0

[ 1535.983775] x23: 0000000000429000 x22: 000000000042a2b8

[ 1535.989254] x21: 000000000042a000 x20: 0000000058edd444

[ 1535.994734] x19: 00000000283a9010 x18: 0000000000000014

[ 1536.000213] x17: 0000ffff8baada88 x16: 0000000000442c08

[ 1536.005693] x15: 00002162cc000000 x14: 000bcd3d80000000

[ 1536.011173] x13: 00000001f4000000 x12: 0000000000000017

[ 1536.016653] x11: 0000000000061bf7 x10: 0000000058edd444

[ 1536.022131] x9 : 001dcd6500000000 x8 : 0000000000000016

[ 1536.027611] x7 : 000000000000dfda x6 : 0000ffff8bdc5000

[ 1536.033090] x5 : 0000000000000008 x4 : 0000000000000000

[ 1536.038570] x3 : 00000000000003e8 x2 : 0000000000000401

[ 1536.044049] x1 : 00000000283bd050 x0 : 0000000000000000

[ 1536.049529] Process lighttpd (pid: 2108, stack limit =
0xffff80a162790000)



Please find attached status script.



Regards,

Oza.

*From:* SPDK [mailto:spdk-bounces(a)lists.01.org <spdk-bounces(a)lists.01.org>] *On
Behalf Of *Harris, James R
*Sent:* Tuesday, August 29, 2017 11:30 PM
*To:* Storage Performance Development Kit
*Subject:* Re: [SPDK] PCI hotplug and SPDK



So to clarify, you have your system booted with no NVMe endpoint connected,
and then when you run the SPDK setup.sh script, you see all of these kernel
messages from trying to bind vfio to PCIe devices and system eventually
crashes?



If so, we need to determine what PCIe devices setup.sh is trying to bind to
vfio.  It should only be trying to bind NVMe devices but if there is no
NVMe device connected then it shouldn’t be trying to bind anything.



Can you send lspci –vvvx output from your system before running setup.sh?



Thanks,



-Jim



*From: *SPDK <spdk-bounces(a)lists.01.org> on behalf of Oza Oza <
oza.oza(a)broadcom.com>
*Reply-To: *Storage Performance Development Kit <spdk(a)lists.01.org>
*Date: *Tuesday, August 29, 2017 at 9:45 AM
*To: *Storage Performance Development Kit <spdk(a)lists.01.org>
*Subject: *Re: [SPDK] PCI hotplug and SPDK



In my opinion, this has nothing to do with platform. Though our platform is
ARMv8.

(but, I can not test on any other, because we don’t know how the kernel
driver is written)



If kernel driver supports hotplug, which means they are allowing
pci_create_root_bus irrespective of whether EP is plugged or not.

In other words. Following APIs are never called.

pci_stop_root_bus(bus);

pci_remove_root_bus(bus);



and in that case, if PCIe slots is empty, running SPDK resulting in stalls.
(10-15 seconds) followed by crash.



Regards,

Oza.

*From:* SPDK [mailto:spdk-bounces(a)lists.01.org] *On Behalf Of *Harris,
James R
*Sent:* Tuesday, August 29, 2017 6:20 PM
*To:* Storage Performance Development Kit
*Subject:* Re: [SPDK] PCI hotplug and SPDK



Hi Oza,



Do you see this issue only on your armv8 platform or do you also see it on
amd64?



-Jim





*From: *SPDK <spdk-bounces(a)lists.01.org> on behalf of Oza Oza <
oza.oza(a)broadcom.com>
*Reply-To: *Storage Performance Development Kit <spdk(a)lists.01.org>
*Date: *Tuesday, August 29, 2017 at 1:51 AM
*To: *Storage Performance Development Kit <spdk(a)lists.01.org>
*Subject: *Re: [SPDK] PCI hotplug and SPDK



Sorry If I was unclear.

I am not talking about hotplug feature of SPDK.





Ø  PCI hotplug feature is implemented in kernel driver and working fine.

Ø  But the moment I run SPDK and try to bind vfio driver it stalls
completely.

The reason is: kernel driver will not remove the root bus (when PCIe
endpoint is not connected, during boot-time)

So SPDK tries to bind driver thinking host bridge is there.

Without PCI hotplug host bridge will not be there because of following API
call in kernel driver.

pci_stop_root_bus(bus);

pci_remove_root_bus(bus);

Ø  since now we allow host bridge creation  (API: pci_create_root_bus)
irrespective of EP is connected or not.

And then if I run SPDK (with no Endpoint connected/Empty slot) I get stalls.



Regards,

Oza.

*From:* SPDK [mailto:spdk-bounces(a)lists.01.org] *On Behalf Of *Chang, Cunyin
*Sent:* Tuesday, August 29, 2017 2:14 PM
*To:* Storage Performance Development Kit
*Subject:* Re: [SPDK] PCI hotplug and SPDK



Hi Oza,



Could you please provide some details steps to reproduce the issue?

SPDK take in charge  for hotplug only after you bind the device to uio or
vfio driver,

so for the new insert deivce, it will handled by kernel driver first.



-Cunyin



*From:* SPDK [mailto:spdk-bounces(a)lists.01.org <spdk-bounces(a)lists.01.org>] *On
Behalf Of *Oza Oza
*Sent:* Tuesday, August 29, 2017 4:22 PM
*To:* Storage Performance Development Kit <spdk(a)lists.01.org>
*Subject:* [SPDK] PCI hotplug and SPDK



Hi All,



PCI hotplug support; requires creation of root bus and probe to go ahead
with all PCIe configuration.



Which means following APIs ae not called.

   pci_stop_root_bus(bus);

   pci_remove_root_bus(bus);





And then If I run SPDK, It makes system crash with following info.



Note: if the disk is connected then SPDK is fine.



Otherwise it stalls the system with following crash.



root(a)bcm958742k:~# echo 2048 > /proc/sys/vm/nr_hugepages;
/usr/share/spdk/scripts/setup.sh

grep: /usr/share/spdk/scripts/../include/spdk/pci_ids.h: No such[
34.621325] pci 0008:00:00.0: PCI bridge to [bus 01]

file or directory

[   34.640586] pci 0000:00:00.0: bridge configuration invalid ([bus
00-00]), reconfiguring

[   50.267056] pci 0000:00:00.0: PCI bridge to [bus 01]

[   50.272337] pci 0001:00:00.0: bridge configuration invalid ([bus
00-00]), reconfiguring

[   65.898762] pci 0001:00:00.0: PCI bridge to [bus 01]

[   65.904015] pci 0006:00:00.0: bridge configuration invalid ([bus
00-00]), reconfiguring

[   81.530437] pci 0006:00:00.0: PCI bridge to [bus 01]

[   81.535680] pci 0007:00:00.0: bridge configuration invalid ([bus
00-00]), reconfiguring

[   97.162103] pci 0007:00:00.0: PCI bridge to [bus 01]

[   97.167255] Bad mode in Error handler detected on CPU6, code 0xbf000002
-- SError

[   97.174974] Internal error: Oops - bad mode: 0 [#1] SMP

[   97.180364] Modules linked in:

[   97.183515] CPU: 6 PID: 2104 Comm: bash Not tainted
4.12.0-01560-gc83093d-dirty #89

[   97.191413] Hardware name: Stingray Combo SVK w/PCIe IOMMU (BCM958742K)
(DT)

[   97.198683] task: ffff80a163a40000 task.stack: ffff80a1612b4000

[   97.204790] PC is at 0xffff7cbdfba8

[   97.208387] LR is at 0xffff7cb8f288

[   97.211983] pc : [<0000ffff7cbdfba8>] lr : [<0000ffff7cb8f288>] pstate:
20000000

[   97.219612] sp : 0000fffffe564040

[   97.223029] x29: 0000fffffe564040 x28: 000000001054ce60

[   97.228509] x27: 0000000000000000 x26: 00000000004e2000

[   97.233989] x25: 00000000004e5000 x24: 0000000000000002

[   97.239468] x23: 0000ffff7cc63638 x22: 0000000000000002

[   97.244947] x21: 0000ffff7cc67480 x20: 000000001054db10

[   97.250427] x19: 0000000000000002 x18: 0000000000000000

[   97.255906] x17: 00000000004daac8 x16: 0000000000000000

[   97.261386] x15: 0000000000000096 x14: 0000000000000000

[   97.266865] x13: 0000000000000000 x12: 0000000000000000

[   97.272344] x11: 0000000000000020 x10: 0101010101010101

[   97.277824] x9 : ffffff80ffffffc8 x8 : 0000000000000040

[   97.283303] x7 : 0000000000000001 x6 : 0000ffff7cc669f0

[   97.288782] x5 : 0000000000015551 x4 : 0000000000000888

[   97.294261] x3 : 0000000000000000 x2 : 0000000000000002

[   97.299741] x1 : 000000001054db10 x0 : 0000000000000002

[   97.305220] Process bash (pid: 2104, stack limit = 0xffff80a1612b4000)

[   97.311960] ---[ end trace a1f48abe30820241 ]---



Regards,

Oza.