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Date: Wed, 13 Mar 2019 14:13:13 +0100
From: Marc Gonzalez <marc.w.gonzalez@...e.fr>
To: Stanimir Varbanov <svarbanov@...sol.com>,
Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
Bjorn Helgaas <bhelgaas@...gle.com>
Cc: Andy Gross <andy.gross@...aro.org>,
David Brown <david.brown@...aro.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
PCI <linux-pci@...r.kernel.org>,
MSM <linux-arm-msm@...r.kernel.org>,
LKML <linux-kernel@...r.kernel.org>,
Jeffrey Hugo <jhugo@...eaurora.org>
Subject: Re: [PATCH v2] PCI: qcom: Use default config space read function
On 13/03/2019 12:45, Marc Gonzalez wrote:
> We don't need to fudge the device class in qcom_pcie_rd_own_conf()
> because dw_pcie_setup_rc() already does the right thing:
>
> /* Program correct class for RC */
> dw_pcie_wr_own_conf(pp, PCI_CLASS_DEVICE, 2, PCI_CLASS_BRIDGE_PCI);
qcom-pcie 1c00000.pci: 1c00000.pci supply vdda not found, using dummy regulator
qcom-pcie 1c00000.pci: 1c00000.pci supply vddpe-3v3 not found, using dummy regulator
qcom-pcie 1c00000.pci: host bridge /soc/pci@...0000 ranges:
qcom-pcie 1c00000.pci: Parsing ranges property...
qcom-pcie 1c00000.pci: IO 0x1b200000..0x1b2fffff -> 0x1b200000
qcom-pcie 1c00000.pci: MEM 0x1b300000..0x1bffffff -> 0x1b300000
qcom-pcie 1c00000.pci: Link up
qcom-pcie 1c00000.pci: PCI host bridge to bus 0000:00
pci_bus 0000:00: root bus resource [bus 00-ff]
pci_bus 0000:00: root bus resource [io 0x0000-0xfffff] (bus address [0x1b200000-0x1b2fffff])
pci_bus 0000:00: root bus resource [mem 0x1b300000-0x1bffffff]
pci_bus 0000:00: scanning bus
pci 0000:00:00.0: [17cb:0105] type 01 class 0x060400
pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x00000fff 64bit]
pci 0000:00:00.0: PME# supported from D0 D3hot
pci 0000:00:00.0: PME# disabled
pci_bus 0000:00: fixups for bus
pci 0000:00:00.0: scanning [bus 01-ff] behind bridge, pass 0
pci_bus 0000:01: scanning bus
pci 0000:01:00.0: [1969:1083] type 00 class 0x020000
pci 0000:01:00.0: reg 0x10: [mem 0x1b300000-0x1b33ffff 64bit]
pci 0000:01:00.0: reg 0x18: [io 0x1000-0x107f]
pci 0000:01:00.0: PME# supported from D0 D1 D2 D3hot D3cold
pci 0000:01:00.0: PME# disabled
pci_bus 0000:01: fixups for bus
pci_bus 0000:01: bus scan returning with max=01
pci 0000:00:00.0: scanning [bus 01-ff] behind bridge, pass 1
pci_bus 0000:00: bus scan returning with max=ff
pci 0000:00:00.0: BAR 8: assigned [mem 0x1b300000-0x1b3fffff]
pci 0000:00:00.0: BAR 0: assigned [mem 0x1b400000-0x1b400fff 64bit]
pci 0000:00:00.0: BAR 7: assigned [io 0x1000-0x1fff]
pci 0000:01:00.0: BAR 0: assigned [mem 0x1b300000-0x1b33ffff 64bit]
pci 0000:01:00.0: BAR 2: assigned [io 0x1000-0x107f]
pci 0000:00:00.0: PCI bridge to [bus 01-ff]
pci 0000:00:00.0: bridge window [io 0x1000-0x1fff]
pci 0000:00:00.0: bridge window [mem 0x1b300000-0x1b3fffff]
pci 0000:01:00.0: [Firmware Bug]: disabling VPD access (can't determine size of non-standard VPD format)
# lspci -vvv >tmp
pcilib: sysfs_read_vpd: read failed: Input/output error
# cat tmp
00:00.0 PCI bridge: Qualcomm Device 0105 (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 25
Region 0: Memory at 1b400000 (64-bit, non-prefetchable) [size=4K]
Bus: primary=00, secondary=01, subordinate=ff, sec-latency=0
I/O behind bridge: 00001000-00001fff [size=4K]
Memory behind bridge: 1b300000-1b3fffff [size=1M]
Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff [empty]
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: [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: Enable+ Count=1/32 Maskable+ 64bit+
Address: 00000000fbfff000 Data: 0000
Masking: fffffffe Pending: 00000000
Capabilities: [70] Express (v2) Root Port (Slot-), MSI 00
DevCap: MaxPayload 128 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 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <1us, L1 <16us
ClockPM- Surprise- LLActRep+ BwNot+ ASPMOptComp+
LnkCtl: ASPM Disabled; RCB 128 bytes Disabled- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/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 Not Supported ARIFwd-
AtomicOpsCap: Routing- 32bit- 64bit- 128bitCAS-
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR+, OBFF Disabled ARIFwd-
AtomicOpsCtl: ReqEn- EgressBlck-
LnkCtl2: Target Link Speed: 5GT/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 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, 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: [148 v1] Transaction Processing Hints
No steering table available
Capabilities: [1dc v1] L1 PM Substates
L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+ L1_PM_Substates+
PortCommonModeRestoreTime=70us PortTPowerOnTime=0us
L1SubCtl1: PCI-PM_L1.2- PCI-PM_L1.1- ASPM_L1.2- ASPM_L1.1-
T_CommonMode=70us LTR1.2_Threshold=0ns
L1SubCtl2: T_PwrOn=10us
Kernel driver in use: pcieport
01:00.0 Ethernet controller: Qualcomm Atheros AR8151 v2.0 Gigabit Ethernet (rev c0)
Subsystem: Qualcomm Atheros AR8151 v2.0 Gigabit Ethernet
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 0
Region 0: Memory at 1b300000 (64-bit, non-prefetchable) [size=256K]
Region 2: I/O ports at 1000 [size=128]
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: Enable- Count=1/1 Maskable- 64bit+
Address: 0000000000000000 Data: 0000
Capabilities: [58] Express (v1) Endpoint, MSI 00
DevCap: MaxPayload 4096 bytes, PhantFunc 0, Latency L0s unlimited, L1 unlimited
ExtTag- AttnBtn+ AttnInd+ PwrInd+ RBE+ FLReset- SlotPowerLimit 0.000W
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, Exit Latency L0s unlimited, L1 unlimited
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-
Capabilities: [6c] Vital Product Data
Not readable
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, ECRCGenCap+ ECRCGenEn- ECRCChkCap+ ECRCChkEn-
MultHdrRecCap- MultHdrRecEn- TLPPfxPres- HdrLogCap-
HeaderLog: 00000000 00000000 00000000 00000000
Capabilities: [180 v1] Device Serial Number ff-c0-2f-ab-1e-89-4e-ff
Kernel driver in use: atl1c
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