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Message-ID: <702c4ad7-508b-42de-9dc3-40e4a0fe7bd7@gmail.com>
Date: Sat, 18 Oct 2025 07:27:50 +0530
From: Bhanu Seshu Kumar Valluri <bhanuseshukumar@...il.com>
To: Bjorn Helgaas <helgaas@...nel.org>
Cc: ilpo.jarvinen@...ux.intel.com, bhelgaas@...gle.com, kw@...ux.com,
linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
lucas.demarchi@...el.com, rafael.j.wysocki@...el.com,
Manivannan Sadhasivam <mani@...nel.org>
Subject: Re: [PATCH 1/2] PCI: Setup bridge resources earlier
On 18/10/25 00:22, Bjorn Helgaas wrote:
> On Fri, Oct 17, 2025 at 11:52:58PM +0530, Bhanu Seshu Kumar Valluri wrote:
>> Hi,
>>
>> I want to report that this PATCH also break PCI RC port on TI-AM64-EVM.
>>
>> I did git bisect and it pointed to the a43ac325c7cb ("PCI: Set up bridge resources earlier")
>>
>> Happy to help if any testing or logs are required.
>
> Thanks for the report! Can you test this patch?
>
> https://patch.msgid.link/20251014163602.17138-1-ilpo.jarvinen@linux.intel.com
>
> That patch is queued up as
> https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git/commit/?id=469276c06aff
> and should appear in v6.18-rc2 on Sunday if all goes well.
>
> If that doesn't work, let us know and we'll debug this further.
I applied above patch on top of commit f406055cb18c ("Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux")
Did pci rescan and run kselftest (pci_endpoint_test). It is working.
Thanks for the patch.
Happy to help if any testing or logs are required.
[logs are as pasted below]
root@...4xx-evm:~# echo 1 > /sys/bus/pci/rescan
[ 37.938991] pci 0000:01:00.0: [104c:b010] type 00 class 0xff0000 PCIe Endpoint
[ 37.946384] pci 0000:01:00.0: BAR 0 [mem 0x00000000-0x0000ffff]
[ 37.952430] pci 0000:01:00.0: BAR 1 [mem 0x00000000-0x000001ff]
[ 37.958471] pci 0000:01:00.0: BAR 2 [mem 0x00000000-0x000003ff]
[ 37.964499] pci 0000:01:00.0: BAR 3 [mem 0x00000000-0x00003fff]
[ 37.970601] pci 0000:01:00.0: BAR 4 [mem 0x00000000-0x0001ffff]
[ 37.976673] pci 0000:01:00.0: BAR 5 [mem 0x00000000-0x000fffff]
[ 37.983157] pci 0000:01:00.0: supports D1
[ 37.987241] pci 0000:01:00.0: PME# supported from D0 D1 D3hot
[ 37.999527] pci 0000:01:00.0: ASPM: DT platform, enabling L0s-up L0s-dw L1 ASPM-L1.1 ASPM-L1.2 PCI-PM-L1.1 PCI-PM-L1.2
[ 38.010392] pci 0000:01:00.0: ASPM: DT platform, enabling ClockPM
[ 38.016760] pcieport 0000:00:00.0: bridge window [mem 0x68100000-0x682fffff]: assigned
[ 38.024940] pci 0000:01:00.0: BAR 5 [mem 0x68100000-0x681fffff]: assigned
[ 38.031906] pci 0000:01:00.0: BAR 4 [mem 0x68200000-0x6821ffff]: assigned
[ 38.038769] pci 0000:01:00.0: BAR 0 [mem 0x68220000-0x6822ffff]: assigned
[ 38.045849] pci 0000:01:00.0: BAR 3 [mem 0x68230000-0x68233fff]: assigned
[ 38.052804] pci 0000:01:00.0: BAR 2 [mem 0x68234000-0x682343ff]: assigned
[ 38.059832] pci 0000:01:00.0: BAR 1 [mem 0x68234400-0x682345ff]: assigned
[ 38.067507] pcieport 0000:00:00.0: of_irq_parse_pci: failed with rc=-22
[ 38.074329] pci-endpoint-test 0000:01:00.0: enabling device (0000 -> 0002)
--------------------------------------------------------------------------------------------------------
root@...4xx-evm:~# ./pci_endpoint_test -T LEGACY_IRQ_TEST
TAP version 13
1..16
# Starting 16 tests from 10 test cases.
# RUN pci_ep_bar.BAR0.BAR_TEST ...
# OK pci_ep_bar.BAR0.BAR_TEST
ok 1 pci_ep_bar.BAR0.BAR_TEST
# RUN pci_ep_bar.BAR1.BAR_TEST ...
# OK pci_ep_bar.BAR1.BAR_TEST
ok 2 pci_ep_bar.BAR1.BAR_TEST
# RUN pci_ep_bar.BAR2.BAR_TEST ...
# OK pci_ep_bar.BAR2.BAR_TEST
ok 3 pci_ep_bar.BAR2.BAR_TEST
# RUN pci_ep_bar.BAR3.BAR_TEST ...
# OK pci_ep_bar.BAR3.BAR_TEST
ok 4 pci_ep_bar.BAR3.BAR_TEST
# RUN pci_ep_bar.BAR4.BAR_TEST ...
# OK pci_ep_bar.BAR4.BAR_TEST
ok 5 pci_ep_bar.BAR4.BAR_TEST
# RUN pci_ep_bar.BAR5.BAR_TEST ...
# OK pci_ep_bar.BAR5.BAR_TEST
ok 6 pci_ep_bar.BAR5.BAR_TEST
# RUN pci_ep_basic.CONSECUTIVE_BAR_TEST ...
# OK pci_ep_basic.CONSECUTIVE_BAR_TEST
ok 7 pci_ep_basic.CONSECUTIVE_BAR_TEST
# RUN pci_ep_basic.MSI_TEST ...
# OK pci_ep_basic.MSI_TEST
ok 8 pci_ep_basic.MSI_TEST
# RUN pci_ep_basic.MSIX_TEST ...
# OK pci_ep_basic.MSIX_TEST
ok 9 pci_ep_basic.MSIX_TEST
# RUN pci_ep_data_transfer.memcpy.READ_TEST ...
# OK pci_ep_data_transfer.memcpy.READ_TEST
ok 10 pci_ep_data_transfer.memcpy.READ_TEST
# RUN pci_ep_data_transfer.memcpy.WRITE_TEST ...
# OK pci_ep_data_transfer.memcpy.WRITE_TEST
ok 11 pci_ep_data_transfer.memcpy.WRITE_TEST
# RUN pci_ep_data_transfer.memcpy.COPY_TEST ...
# OK pci_ep_data_transfer.memcpy.COPY_TEST
ok 12 pci_ep_data_transfer.memcpy.COPY_TEST
# RUN pci_ep_data_transfer.dma.READ_TEST ...
# OK pci_ep_data_transfer.dma.READ_TEST
ok 13 pci_ep_data_transfer.dma.READ_TEST
# RUN pci_ep_data_transfer.dma.WRITE_TEST ...
# OK pci_ep_data_transfer.dma.WRITE_TEST
ok 14 pci_ep_data_transfer.dma.WRITE_TEST
# RUN pci_ep_data_transfer.dma.COPY_TEST ...
# OK pci_ep_data_transfer.dma.COPY_TEST
ok 15 pci_ep_data_transfer.dma.COPY_TEST
# RUN pcie_ep_doorbell.DOORBELL_TEST ...
# OK pcie_ep_doorbell.DOORBELL_TEST
ok 16 pcie_ep_doorbell.DOORBELL_TEST
# PASSED: 16 / 16 tests passed.
# Totals: pass:16 fail:0 xfail:0 xpass:0 skip:0 error:0
------------------------------------------------------------------------------------------
root@...4xx-evm:~# lspci -vv
00:00.0 PCI bridge: Texas Instruments Device b010 (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 506
Region 0: Memory at <unassigned> (64-bit, prefetchable) [disabled]
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: [disabled]
Memory behind bridge: [disabled]
Prefetchable memory behind bridge: [disabled]
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
BridgeCtl: Parity- SERR+ NoISA- VGA- VGA16- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: [80] 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: [90] MSI: Enable+ Count=1/1 Maskable+ 64bit+
Address: 0000000001000000 Data: 0000
Masking: 00000000 Pending: 00000000
Capabilities: [b0] MSI-X: Enable- Count=1 Masked-
Vector table: BAR=0 offset=00000000
PBA: BAR=0 offset=00000008
Capabilities: [c0] Express (v2) Root Port (Slot+), MSI 00
DevCap: MaxPayload 128 bytes, PhantFunc 0
ExtTag- RBE+
DevCtl: CorrErr+ NonFatalErr+ FatalErr+ UnsupReq+
RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
MaxPayload 128 bytes, MaxReadReq 512 bytes
DevSta: CorrErr- NonFatalErr- FatalErr- UnsupReq- AuxPwr- TransPend-
LnkCap: Port #0, Speed 5GT/s, Width x1, ASPM L1, Exit Latency L1 <8us
ClockPM- Surprise- LLActRep- BwNot+ ASPMOptComp+
LnkCtl: ASPM Disabled; RCB 64 bytes, Disabled- CommClk-
ExtSynch- ClockPM- AutWidDis- BWInt+ AutBWInt+
LnkSta: Speed 5GT/s (ok), Width x1 (ok)
TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt+
SltCap: AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug- Surprise-
Slot #0, PowerLimit 0.000W; Interlock- NoCompl-
SltCtl: Enable: AttnBtn- PwrFlt- MRL- PresDet- CmdCplt- HPIrq- LinkChg-
Control: AttnInd Off, PwrInd Off, Power+ Interlock-
SltSta: Status: AttnBtn- PowerFlt- MRL+ CmdCplt- PresDet- Interlock-
Changed: MRL- PresDet- LinkState-
RootCap: CRSVisible-
RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna+ CRSVisible-
RootSta: PME ReqID 0000, PMEStatus- PMEPending-
DevCap2: Completion Timeout: Range B, TimeoutDis+ NROPrPrP- LTR+
10BitTagComp- 10BitTagReq- OBFF Via message, ExtFmt+ EETLPPrefix+, MaxEETLPPrefixes 1
EmergencyPowerReduction Not Supported, EmergencyPowerReductionInit-
FRS- LN System CLS Not Supported, TPHComp- ExtTPHComp- ARIFwd-
AtomicOpsCap: Routing- 32bit- 64bit- 128bitCAS-
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis- LTR+ OBFF Disabled, ARIFwd-
AtomicOpsCtl: ReqEn- EgressBlck-
LnkCap2: Supported Link Speeds: 2.5-5GT/s, Crosslink- Retimer- 2Retimers- DRS-
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-
Retimer- 2Retimers- CrosslinkRes: unsupported
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- AdvNonFatalErr-
CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr+
AERCap: First Error Pointer: 00, ECRCGenCap+ ECRCGenEn- ECRCChkCap+ ECRCChkEn-
MultHdrRecCap- MultHdrRecEn- TLPPfxPres- HdrLogCap-
HeaderLog: 00000000 00000000 00000000 00000000
RootCmd: CERptEn+ NFERptEn+ FERptEn+
RootSta: CERcvd- MultCERcvd- UERcvd- MultUERcvd-
FirstFatal- NonFatalMsg- FatalMsg- IntMsg 0
ErrorSrc: ERR_COR: 0000 ERR_FATAL/NONFATAL: 0000
Capabilities: [150 v1] Device Serial Number 00-00-00-00-00-00-00-00
Capabilities: [300 v1] Secondary PCI Express
LnkCtl3: LnkEquIntrruptEn- PerformEqu-
LaneErrStat: 0
Capabilities: [4c0 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-
VC1: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
Ctrl: Enable- ID=1 ArbSelect=Fixed TC/VC=00
Status: NegoPending- InProgress-
VC2: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
Ctrl: Enable- ID=2 ArbSelect=Fixed TC/VC=00
Status: NegoPending- InProgress-
VC3: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
Ctrl: Enable- ID=3 ArbSelect=Fixed TC/VC=00
Status: NegoPending- InProgress-
Capabilities: [900 v1] L1 PM Substates
L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+ L1_PM_Substates+
PortCommonModeRestoreTime=255us PortTPowerOnTime=26us
L1SubCtl1: PCI-PM_L1.2- PCI-PM_L1.1- ASPM_L1.2- ASPM_L1.1-
T_CommonMode=255us LTR1.2_Threshold=287744ns
L1SubCtl2: T_PwrOn=26us
Capabilities: [a20 v1] Precision Time Measurement
PTMCap: Requester:- Responder:+ Root:+
PTMClockGranularity: 4ns
PTMControl: Enabled:- RootSelected:-
PTMEffectiveGranularity: Unknown
Kernel driver in use: pcieport
01:00.0 Unassigned class [ff00]: Texas Instruments Device b010
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 533
Region 0: Memory at 68220000 (32-bit, non-prefetchable) [size=64K]
Region 1: Memory at 68234400 (32-bit, non-prefetchable) [size=512]
Region 2: Memory at 68234000 (32-bit, non-prefetchable) [size=1K]
Region 3: Memory at 68230000 (32-bit, non-prefetchable) [size=16K]
Region 4: Memory at 68200000 (32-bit, non-prefetchable) [size=128K]
Region 5: Memory at 68100000 (32-bit, non-prefetchable) [size=1M]
Capabilities: [80] 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: [90] MSI: Enable+ Count=32/32 Maskable- 64bit+
Address: 0000000001000400 Data: 0000
Capabilities: [b0] MSI-X: Enable- Count=2048 Masked-
Vector table: BAR=0 offset=00000080
PBA: BAR=0 offset=00008080
Capabilities: [c0] Express (v2) Endpoint, MSI 00
DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <1us, L1 <1us
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+ SlotPowerLimit 0.000W
DevCtl: CorrErr+ NonFatalErr+ FatalErr+ UnsupReq+
RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+ FLReset-
MaxPayload 128 bytes, MaxReadReq 512 bytes
DevSta: CorrErr- NonFatalErr- FatalErr- UnsupReq- AuxPwr- TransPend-
LnkCap: Port #0, Speed 5GT/s, Width x1, ASPM L1, Exit Latency L1 <8us
ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp+
LnkCtl: ASPM Disabled; RCB 64 bytes, Disabled- CommClk-
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 5GT/s (ok), Width x1 (ok)
TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt-
DevCap2: Completion Timeout: Range B, TimeoutDis+ NROPrPrP- LTR+
10BitTagComp- 10BitTagReq- OBFF Via message, ExtFmt+ EETLPPrefix+, MaxEETLPPrefixes 1
EmergencyPowerReduction Not Supported, EmergencyPowerReductionInit-
FRS- TPHComp- ExtTPHComp-
AtomicOpsCap: 32bit- 64bit- 128bitCAS-
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis- LTR+ OBFF Disabled,
AtomicOpsCtl: ReqEn-
LnkCap2: Supported Link Speeds: 2.5-5GT/s, Crosslink- Retimer- 2Retimers- DRS-
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-
Retimer- 2Retimers- CrosslinkRes: unsupported
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- AdvNonFatalErr-
CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr+
AERCap: First Error Pointer: 00, ECRCGenCap+ ECRCGenEn- ECRCChkCap+ ECRCChkEn-
MultHdrRecCap- MultHdrRecEn- TLPPfxPres- HdrLogCap-
HeaderLog: 00000000 00000000 00000000 00000000
Capabilities: [150 v1] Device Serial Number 00-00-00-00-00-00-00-00
Capabilities: [160 v1] Power Budgeting <?>
Capabilities: [1b8 v1] Latency Tolerance Reporting
Max snoop latency: 0ns
Max no snoop latency: 0ns
Capabilities: [1c0 v1] Dynamic Power Allocation <?>
Capabilities: [300 v1] Secondary PCI Express
LnkCtl3: LnkEquIntrruptEn- PerformEqu-
LaneErrStat: 0
Capabilities: [400 v1] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
Capabilities: [440 v1] Process Address Space ID (PASID)
PASIDCap: Exec+ Priv+, Max PASID Width: 14
PASIDCtl: Enable- Exec- Priv-
Capabilities: [4c0 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-
VC1: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
Ctrl: Enable- ID=1 ArbSelect=Fixed TC/VC=00
Status: NegoPending- InProgress-
VC2: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
Ctrl: Enable- ID=2 ArbSelect=Fixed TC/VC=00
Status: NegoPending- InProgress-
VC3: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
Ctrl: Enable- ID=3 ArbSelect=Fixed TC/VC=00
Status: NegoPending- InProgress-
Capabilities: [900 v1] L1 PM Substates
L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+ L1_PM_Substates+
PortCommonModeRestoreTime=255us PortTPowerOnTime=26us
L1SubCtl1: PCI-PM_L1.2- PCI-PM_L1.1- ASPM_L1.2- ASPM_L1.1-
T_CommonMode=0us LTR1.2_Threshold=287744ns
L1SubCtl2: T_PwrOn=26us
Capabilities: [a20 v1] Precision Time Measurement
PTMCap: Requester:+ Responder:- Root:-
PTMClockGranularity: Unimplemented
PTMControl: Enabled:- RootSelected:-
PTMEffectiveGranularity: Unknown
Kernel driver in use: pci-endpoint-test
Regards
Bhanu Seshu Kumar Valluri
>
>> echo 1 > /sys/bus/pci/rescan
>> [ 37.170389] pci 0000:01:00.0: [104c:b010] type 00 class 0xff0000 PCIe Endpoint
>> [ 37.177781] pci 0000:01:00.0: BAR 0 [mem 0x00000000-0x0000ffff]
>> [ 37.183808] pci 0000:01:00.0: BAR 1 [mem 0x00000000-0x000001ff]
>> [ 37.189843] pci 0000:01:00.0: BAR 2 [mem 0x00000000-0x000003ff]
>> [ 37.195802] pci 0000:01:00.0: BAR 3 [mem 0x00000000-0x00003fff]
>> [ 37.201768] pci 0000:01:00.0: BAR 4 [mem 0x00000000-0x0001ffff]
>> [ 37.207715] pci 0000:01:00.0: BAR 5 [mem 0x00000000-0x000fffff]
>> [ 37.214040] pci 0000:01:00.0: supports D1
>> [ 37.218083] pci 0000:01:00.0: PME# supported from D0 D1 D3hot
>> [ 37.231890] pci 0000:01:00.0: BAR 5 [mem 0x68100000-0x681fffff]: assigned
>> [ 37.242890] pci 0000:01:00.0: BAR 4 [mem size 0x00020000]: can't assign; no space
>> [ 37.251216] pci 0000:01:00.0: BAR 4 [mem size 0x00020000]: failed to assign
>> [ 37.258309] pci 0000:01:00.0: BAR 0 [mem size 0x00010000]: can't assign; no space
>> [ 37.265851] pci 0000:01:00.0: BAR 0 [mem size 0x00010000]: failed to assign
>> [ 37.272896] pci 0000:01:00.0: BAR 3 [mem size 0x00004000]: can't assign; no space
>> [ 37.280439] pci 0000:01:00.0: BAR 3 [mem size 0x00004000]: failed to assign
>> [ 37.287459] pci 0000:01:00.0: BAR 2 [mem size 0x00000400]: can't assign; no space
>> [ 37.294986] pci 0000:01:00.0: BAR 2 [mem size 0x00000400]: failed to assign
>> [ 37.302011] pci 0000:01:00.0: BAR 1 [mem size 0x00000200]: can't assign; no space
>> [ 37.309536] pci 0000:01:00.0: BAR 1 [mem size 0x00000200]: failed to assign
>> [ 37.316595] pci 0000:01:00.0: BAR 5 [mem 0x68100000-0x681fffff]: releasing
>> [ 37.323541] pci 0000:01:00.0: BAR 5 [mem 0x68100000-0x681fffff]: assigned
>> [ 37.330400] pci 0000:01:00.0: BAR 4 [mem size 0x00020000]: can't assign; no space
>> [ 37.337956] pci 0000:01:00.0: BAR 4 [mem size 0x00020000]: failed to assign
>> [ 37.344960] pci 0000:01:00.0: BAR 0 [mem size 0x00010000]: can't assign; no space
>> [ 37.352550] pci 0000:01:00.0: BAR 0 [mem size 0x00010000]: failed to assign
>> [ 37.359578] pci 0000:01:00.0: BAR 3 [mem size 0x00004000]: can't assign; no space
>> [ 37.367152] pci 0000:01:00.0: BAR 3 [mem size 0x00004000]: failed to assign
>> [ 37.374192] pci 0000:01:00.0: BAR 2 [mem size 0x00000400]: can't assign; no space
>> [ 37.381709] pci 0000:01:00.0: BAR 2 [mem size 0x00000400]: failed to assign
>> [ 37.388720] pci 0000:01:00.0: BAR 1 [mem size 0x00000200]: can't assign; no space
>> [ 37.396246] pci 0000:01:00.0: BAR 1 [mem size 0x00000200]: failed to assign
>> [ 37.403795] pcieport 0000:00:00.0: of_irq_parse_pci: failed with rc=-22
>> [ 37.410513] pci-endpoint-test 0000:01:00.0: enabling device (0000 -> 0002)
>> [ 37.417796] pci-endpoint-test 0000:01:00.0: Cannot perform PCI test without BAR0
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