I have a Lenovo X220, and d3cold seems to break hotplug on xhci. This
is 3.6.2-4.fc17.x86_64.
The device is:
0e:00.0 USB Controller [0c03]: NEC Corporation uPD720200 USB 3.0 Host
Controller [1033:0194] (rev 04) (prog-if 30 [XHCI])
Subsystem: Lenovo Device [17aa:21da]
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 18
Region 0: Memory at f0c00000 (64-bit, non-prefetchable) [size=8K]
Capabilities: [50] 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: [70] MSI: Enable- Count=1/8 Maskable- 64bit+
Address: 0000000000000000 Data: 0000
Capabilities: [90] MSI-X: Enable+ Count=8 Masked-
Vector table: BAR=0 offset=00001000
PBA: BAR=0 offset=00001080
Capabilities: [a0] Express (v2) Endpoint, MSI 00
DevCap: MaxPayload 128 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 128 bytes, MaxReadReq 512 bytes
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+
TransPend-
LnkCap: Port #0, Speed 5GT/s, Width x1, ASPM L0s L1, Latency L0
<4us, L1 unlimited
ClockPM+ Surprise- LLActRep- BwNot-
LnkCtl: ASPM L1 Enabled; RCB 64 bytes Disabled- Retrain-
CommClk+
ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 5GT/s, Width x1, 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: -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: [140 v1] Device Serial Number ff-ff-ff-ff-ff-ff-ff-ff
Capabilities: [150 v1] Latency Tolerance Reporting
Max snoop latency: 0ns
Max no snoop latency: 0ns
Kernel driver in use: xhci_hcd
(read while the port was functioning and in use.)
Inserting a USB3 flash stick has absolutely no effect, other than some
lights on the stick flickering for a couple seconds. When I wrote 0
to /sys/devices/pci0000:00/0000:00:1c.6/0000:0e:00.0/d3cold_allowed
with the stick inserted, the kernel immediately detected it, and it
worked. dmesg said:
[13829.364050] hub 3-0:1.0: unable to enumerate USB device on port 1
[13829.570044] usb 4-1: new SuperSpeed USB device number 2 using xhci_hcd
[13829.582636] usb 4-1: Parent hub missing LPM exit latency info.
Power management will be impacted.
[13829.585194] usb 4-1: New USB device found, idVendor=1b1c, idProduct=1a01
[13829.585203] usb 4-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[13829.585208] usb 4-1: Product: Voyager GT 3.0
[13829.585213] usb 4-1: Manufacturer: Corsair
[13829.585216] usb 4-1: SerialNumber: 1111800000000051
[13829.586555] scsi13 : usb-storage 4-1:1.0
[13830.588360] scsi 13:0:0:0: Direct-Access Corsair Voyager GT
3.0 1.00 PQ: 0 ANSI: 5
[13830.590394] sd 13:0:0:0: [sdb] 31260672 512-byte logical blocks:
(16.0 GB/14.9 GiB)
[13830.590403] sd 13:0:0:0: Attached scsi generic sg1 type 0
[13830.590574] sd 13:0:0:0: [sdb] Write Protect is off
[13830.590584] sd 13:0:0:0: [sdb] Mode Sense: 23 00 00 00
[13830.590755] sd 13:0:0:0: [sdb] Write cache: disabled, read cache:
disabled, doesn't support DPO or FUA
[13830.595257] sdb: unknown partition table
[13830.596046] sd 13:0:0:0: [sdb] Attached SCSI removable disk
[13952.583378] ehci_hcd 0000:00:1d.0: power state changed by ACPI to D0
[13952.684487] ehci_hcd 0000:00:1d.0: setting latency timer to 64
[13952.685039] ehci_hcd 0000:00:1a.0: power state changed by ACPI to D0
[13952.695332] ehci_hcd 0000:00:1d.0: power state changed by ACPI to D3cold
[13952.785385] ehci_hcd 0000:00:1a.0: setting latency timer to 64
[13952.802164] ehci_hcd 0000:00:1a.0: power state changed by ACPI to D3cold
[13963.727363] ehci_hcd 0000:00:1d.0: power state changed by ACPI to D0
[13963.828153] ehci_hcd 0000:00:1d.0: setting latency timer to 64
[13963.828533] ehci_hcd 0000:00:1a.0: power state changed by ACPI to D0
I suspect the ehci_hcd noise is something else.
--Andy
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