Date: Tue, 03 Jun 2014 21:59:38 +0200 From: Hans Petter Selasky <hps@selasky.org> To: sbruno@freebsd.org Cc: freebsd-usb@freebsd.org Subject: Re: Lenovo T61, USB fails to power on after resume Message-ID: <538E292A.6090804@selasky.org> In-Reply-To: <1401820088.1120.9.camel@bruno> References: <1401807398.96874.3.camel@bruno> <538DEFD3.2010406@selasky.org> <1401813374.1114.0.camel@bruno> <538DFEA8.3090607@selasky.org> <1401820088.1120.9.camel@bruno>
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On 06/03/14 20:28, Sean Bruno wrote:
> 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
>
Setting hw.usb.debug=15 should give you some hints. Are you sure the PCI
device is still there after resume?
--HPS
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