Lenovo T61, USB fails to power on after resume

[Sean Bruno]

On Tue, 2014-06-03 at 18:58 +0200, Hans Petter Selasky wrote:
> On 06/03/14 18:36, Sean Bruno wrote:
> > On Tue, 2014-06-03 at 17:54 +0200, Hans Petter Selasky wrote:
> >> On 06/03/14 16:56, Sean Bruno wrote:
> >>> Noted that on resume, the USB ports on my T61 don't seem to be active.
> >>>
> >>> How should I go about debugging this?
> >>>
> >>> sean
> >>
> >> Hi,
> >>
> >> The USB stack performs the same EHCI/OHCI/UHCI/XHCI reset which is does
> >> during power on, when it resumes. Ensure the ports are powered.  +5V.
> >> Might be a BIOS/PCI/ACPI issue.
> >>
> >> --HPS
> >>
> >
> >
> > Is there something in the output of usbconfig that I can poke at to see
> > if the hardware *thinks* it is powered on?
> >
> > sean
> >
> >
> 
> Yes, there is the port status.
> 
> struct usb_port_status {
>          uWord   wPortStatus;
> #define UPS_CURRENT_CONNECT_STATUS      0x0001
> #define UPS_PORT_ENABLED                0x0002
> #define UPS_SUSPEND                     0x0004
> #define UPS_OVERCURRENT_INDICATOR       0x0008
> #define UPS_RESET                       0x0010
> #define UPS_PORT_L1                     0x0020  /* USB 2.0 only */
> /* The link-state bits are valid for Super-Speed USB HUBs */
> #define UPS_PORT_LINK_STATE_GET(x)      (((x) >> 5) & 0xF)
> #define UPS_PORT_LINK_STATE_SET(x)      (((x) & 0xF) << 5)
> #define UPS_PORT_LS_U0          0x00
> #define UPS_PORT_LS_U1          0x01
> #define UPS_PORT_LS_U2          0x02
> #define UPS_PORT_LS_U3          0x03
> #define UPS_PORT_LS_SS_DIS      0x04
> #define UPS_PORT_LS_RX_DET      0x05
> #define UPS_PORT_LS_SS_INA      0x06
> #define UPS_PORT_LS_POLL        0x07
> #define UPS_PORT_LS_RECOVER     0x08
> #define UPS_PORT_LS_HOT_RST     0x09
> #define UPS_PORT_LS_COMP_MODE   0x0A
> #define UPS_PORT_LS_LOOPBACK    0x0B
> #define UPS_PORT_LS_RESUME      0x0F
> #define UPS_PORT_POWER                  0x0100
> #define UPS_PORT_POWER_SS               0x0200  /* super-speed only */
> #define UPS_LOW_SPEED                   0x0200
> #define UPS_HIGH_SPEED                  0x0400
> #define UPS_OTHER_SPEED                 0x0600  /* currently FreeBSD 
> specific */
> #define UPS_PORT_TEST                   0x0800
> #define UPS_PORT_INDICATOR              0x1000
> #define UPS_PORT_MODE_DEVICE            0x8000  /* currently FreeBSD 
> specific */
>          uWord   wPortChange;
> #define UPS_C_CONNECT_STATUS            0x0001
> #define UPS_C_PORT_ENABLED              0x0002
> #define UPS_C_SUSPEND                   0x0004
> #define UPS_C_OVERCURRENT_INDICATOR     0x0008
> #define UPS_C_PORT_RESET                0x0010
> #define UPS_C_PORT_L1                   0x0020  /* USB 2.0 only */
> #define UPS_C_BH_PORT_RESET             0x0020  /* USB 3.0 only */
> #define UPS_C_PORT_LINK_STATE           0x0040
> #define UPS_C_PORT_CONFIG_ERROR         0x0080
> } __packed;
> 
> It is probed regularly by the UHUB driver and the port status is printed 
> in dmesg.
> 
> Turn on like this:
> 
> sysctl hw.usb.uhub.debug=16
> 
> By resetting the root HUB, you can write new power on bits:
> 
> usbconfig -d X.1 set_config 255
> usbconfig -d X.1 set_config 0
> 
> --HPS

Well, that's problematic.  The USB tree looks like this normally:

ugen0.1: <UHCI root HUB Intel> at usbus0, cfg=0 md=HOST spd=FULL
(12Mbps) pwr=SAVE (0mA)
ugen1.1: <UHCI root HUB Intel> at usbus1, cfg=0 md=HOST spd=FULL
(12Mbps) pwr=SAVE (0mA)
ugen2.1: <EHCI root HUB Intel> at usbus2, cfg=0 md=HOST spd=HIGH
(480Mbps) pwr=SAVE (0mA)
ugen3.1: <UHCI root HUB Intel> at usbus3, cfg=0 md=HOST spd=FULL
(12Mbps) pwr=SAVE (0mA)
ugen4.1: <UHCI root HUB Intel> at usbus4, cfg=0 md=HOST spd=FULL
(12Mbps) pwr=SAVE (0mA)
ugen5.1: <UHCI root HUB Intel> at usbus5, cfg=0 md=HOST spd=FULL
(12Mbps) pwr=SAVE (0mA)
ugen6.1: <EHCI root HUB Intel> at usbus6, cfg=0 md=HOST spd=HIGH
(480Mbps) pwr=SAVE (0mA)
ugen0.2: <Biometric Coprocessor STMicroelectronics> at usbus0, cfg=0
md=HOST spd=FULL (12Mbps) pwr=ON (100mA)


But, on resume ... sometimes ...  ugen0.1 is just flatout gone (along
with the ugen0.2 device, obviously).  This only seems to happen with
various USB device plugged in (tried about 4 different make/model usb
sticks and ext drives).

So, resetting doesn't work as the device is literally gone.  Thoughts?

sean