On Thu, May 12, 2011 at 1:22 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote:
> On Thu, 12 May 2011, Dwight Schauer wrote:
>
>> > Dwight's problem is that he is looking in the wrong place. The xHCI
>> > controller is not a USB device; it's a PCI device -- i.e., it
>> > communicates with the computer over a PCI bus and not over a USB bus.
>> > Therefore it shows up under /sys/bus/pci, not /sys/bus/usb.
>> >
>>
>> OK, thanks. I see that now. I've gone into /sys/bus/pci/.../power/ for
>> the xHCI controller in question and put "enabled" in wakeup, but it
>> does not seem to have the same effect as enabled wakeups in
>> /proc/acpi/wakeup.
>
> Wakeup handling is often easier to test using runtime PM than system
> suspend. Try writing "auto" to the power/control file for the xHCI
> controller, with no USB devices plugged in, and wait for the controller
> to be suspended. Then plug in a USB device and see if the controller
> wakes up again.
>
> If that works okay but a similar test fails to wake up a suspended
> system, it would help to see a dmesg log with CONFIG_USB_DEBUG enabled.
> You should also post the output from "lspci -v" for the controller in
> question.
>
Thanks Alan.
OK, this is with 2.6.39-rc7-gregkh
05:00.0 USB Controller: NEC Corporation uPD720200 USB 3.0 Host
Controller (rev 03) (prog-if 30 [XHCI])
Subsystem: Melco Inc Device 0241
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-
Interrupt: pin A routed to IRQ 17
Region 0: Memory at fe9fe000 (64-bit, non-prefetchable) [size=8K]
Capabilities: [50] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0+,D1-,D2-,D3hot+,D3cold-)
Status: D3 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 Disabled; 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: -3.5dB
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] #18
Kernel driver in use: xhci_hcd
Kernel modules: xhci-hcd
@@@ With "on" in power/control I get this upon plugging in a keyboard:
usb usb2: usb wakeup-resume
usb usb2: usb auto-resume
hub 2-0:1.0: hub_resume
hub 2-0:1.0: port 2: status 0101 change 0001
hub 2-0:1.0: state 7 ports 2 chg 0004 evt 0000
hub 2-0:1.0: port 2, status 0101, change 0000, 12 Mb/s
usb 2-2: new low speed USB device number 6 using xhci_hcd
usb 2-2: skipped 1 descriptor after interface
xhci_hcd 0000:05:00.0: WARN: short transfer on control ep
usb 2-2: default language 0x0409
xhci_hcd 0000:05:00.0: WARN: short transfer on control ep
xhci_hcd 0000:05:00.0: WARN: short transfer on control ep
usb 2-2: udev 6, busnum 2, minor = 133
usb 2-2: New USB device found, idVendor=413c, idProduct=2005
usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 2-2: Product: DELL USB Keyboard
usb 2-2: Manufacturer: DELL
usb 2-2: usb_probe_device
usb 2-2: configuration #1 chosen from 1 choice
usb 2-2: ep 0x81 - rounding interval to 64 microframes, ep desc says
80 microframes
usb 2-2: Successful Endpoint Configure command
usb 2-2: adding 2-2:1.0 (config #1, interface 0)
usbhid 2-2:1.0: usb_probe_interface
usbhid 2-2:1.0: usb_probe_interface - got id
input: DELL DELL USB Keyboard as
/devices/pci0000:00/0000:00:15.1/0000:05:00.0/usb2/2-2/2-2:1.0/input/input10
generic-usb 0003:413C:2005.0006: input,hidraw0: USB HID v1.10 Keyboard
[DELL DELL USB Keyboard] on usb-0000:05:00.0-2/input0
drivers/usb/core/inode.c: creating file '006'
@@@ and upon removing it:
hub 2-0:1.0: state 7 ports 2 chg 0000 evt 0004
hub 2-0:1.0: port 2, status 0100, change 0001, 12 Mb/s
usb 2-2: USB disconnect, device number 6
usb 2-2: unregistering device
usb 2-2: unregistering interface 2-2:1.0
xhci_hcd 0000:05:00.0: shutdown urb ffff880111017c00 ep1in-intr
usb 2-2: usb_disable_device nuking all URBs
hub 2-0:1.0: debounce: port 2: total 100ms stable 100ms status 0x100
hub 2-0:1.0: hub_suspend
usb usb2: bus auto-suspend
@@@ If I put "auto" in power/control I get this:
xhci_hcd 0000:05:00.0: hcd_pci_runtime_suspend: 0
xhci_hcd 0000:05:00.0: PME# enabled
@@@ Upon plugging in a keyboard nothing.
@@@ If I put "on" in power/control leaving the keyboard plugged in, I get this:
xhci_hcd 0000:05:00.0: PME# disabled
xhci_hcd 0000:05:00.0: setting latency timer to 64
xhci_hcd 0000:05:00.0: hcd_pci_runtime_resume: 0
usb usb2: usb wakeup-resume
usb usb2: usb auto-resume
hub 2-0:1.0: hub_resume
hub 2-0:1.0: port 2: status 0101 change 0001
hub 2-0:1.0: state 7 ports 2 chg 0004 evt 0000
hub 2-0:1.0: port 2, status 0101, change 0000, 12 Mb/s
usb 2-2: new low speed USB device number 7 using xhci_hcd
usb 2-2: skipped 1 descriptor after interface
xhci_hcd 0000:05:00.0: WARN: short transfer on control ep
usb 2-2: default language 0x0409
xhci_hcd 0000:05:00.0: WARN: short transfer on control ep
xhci_hcd 0000:05:00.0: WARN: short transfer on control ep
usb 2-2: udev 7, busnum 2, minor = 134
usb 2-2: New USB device found, idVendor=413c, idProduct=2005
usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 2-2: Product: DELL USB Keyboard
usb 2-2: Manufacturer: DELL
usb 2-2: usb_probe_device
usb 2-2: configuration #1 chosen from 1 choice
usb 2-2: ep 0x81 - rounding interval to 64 microframes, ep desc says
80 microframes
usb 2-2: Successful Endpoint Configure command
usb 2-2: adding 2-2:1.0 (config #1, interface 0)
usbhid 2-2:1.0: usb_probe_interface
usbhid 2-2:1.0: usb_probe_interface - got id
input: DELL DELL USB Keyboard as
/devices/pci0000:00/0000:00:15.1/0000:05:00.0/usb2/2-2/2-2:1.0/input/input11
generic-usb 0003:413C:2005.0007: input,hidraw0: USB HID v1.10 Keyboard
[DELL DELL USB Keyboard] on usb-0000:05:00.0-2/input0
drivers/usb/core/inode.c: creating file '007'
@@@ Setting power/wakeup to "enabled" (it was "disabled") has no
effect on this behaviour.
@@@ I changed power/control back to "auto" and "power/wakeup" to "enabled"
@@@ Upon keyboard disconnect I get this:
hub 2-0:1.0: state 7 ports 2 chg 0000 evt 0004
hub 2-0:1.0: port 2, status 0100, change 0001, 12 Mb/s
usb 2-2: USB disconnect, device number 7
usb 2-2: unregistering device
usb 2-2: unregistering interface 2-2:1.0
xhci_hcd 0000:05:00.0: shutdown urb ffff8801110a4480 ep1in-intr
usb 2-2: usb_disable_device nuking all URBs
hub 2-0:1.0: debounce: port 2: total 100ms stable 100ms status 0x100
hub 2-0:1.0: state 7 ports 2 chg 0000 evt 0004
hub 2-0:1.0: hub_suspend
usb usb2: bus auto-suspend
xhci_hcd 0000:05:00.0: hcd_pci_runtime_suspend: 0
xhci_hcd 0000:05:00.0: PME# enabled
@@@ When plugged back in I get nothing.
@@@ The only way I can bring it back at that point is by putting "on"
back in /power/control.
xhci_hcd 0000:05:00.0: PME# disabled
xhci_hcd 0000:05:00.0: setting latency timer to 64
xhci_hcd 0000:05:00.0: hcd_pci_runtime_resume: 0
usb usb2: usb wakeup-resume
usb usb2: usb auto-resume
hub 2-0:1.0: hub_resume
hub 2-0:1.0: port 2: status 0101 change 0001
hub 2-0:1.0: state 7 ports 2 chg 0004 evt 0000
hub 2-0:1.0: port 2, status 0101, change 0000, 12 Mb/s
usb 2-2: new low speed USB device number 8 using xhci_hcd
usb 2-2: skipped 1 descriptor after interface
xhci_hcd 0000:05:00.0: WARN: short transfer on control ep
usb 2-2: default language 0x0409
xhci_hcd 0000:05:00.0: WARN: short transfer on control ep
xhci_hcd 0000:05:00.0: WARN: short transfer on control ep
usb 2-2: udev 8, busnum 2, minor = 135
usb 2-2: New USB device found, idVendor=413c, idProduct=2005
usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 2-2: Product: DELL USB Keyboard
usb 2-2: Manufacturer: DELL
usb 2-2: usb_probe_device
usb 2-2: configuration #1 chosen from 1 choice
usb 2-2: ep 0x81 - rounding interval to 64 microframes, ep desc says
80 microframes
usb 2-2: Successful Endpoint Configure command
usb 2-2: adding 2-2:1.0 (config #1, interface 0)
usbhid 2-2:1.0: usb_probe_interface
usbhid 2-2:1.0: usb_probe_interface - got id
input: DELL DELL USB Keyboard as
/devices/pci0000:00/0000:00:15.1/0000:05:00.0/usb2/2-2/2-2:1.0/input/input12
generic-usb 0003:413C:2005.0008: input,hidraw0: USB HID v1.10 Keyboard
[DELL DELL USB Keyboard] on usb-0000:05:00.0-2/input0
drivers/usb/core/inode.c: creating file '008'
@@@ I get the same behaviour with 2.6.38.6
Dwight Schauer
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