On 06/03/14 22:11, Sean Bruno wrote:
On Tue, 2014-06-03 at 21:59 +0200, Hans Petter Selasky wrote:
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
I did a pre/post resume pciconf -lv and I see no difference between the
two.
On initial resume, ugen0.1 appears to be there in usbconfig output, but
trying to set_config on it, causes it to dissapear and causes usbconfig
to hang:
root@bruno:/home/sbruno # usbconfig -d 0.1 set_config 255
load: 0.36 cmd: usbconfig 1540 [UGONE] 4.19r 0.00u 0.00s 0% 2064k
load: 0.36 cmd: usbconfig 1540 [UGONE] 5.00r 0.00u 0.00s 0% 2064k
load: 0.36 cmd: usbconfig 1540 [UGONE] 5.16r 0.00u 0.00s 0% 2064k
load: 0.36 cmd: usbconfig 1540 [UGONE] 5.35r 0.00u 0.00s 0% 2064k
load: 0.36 cmd: usbconfig 1540 [UGONE] 5.51r 0.00u 0.00s 0% 2064k
Hi,
What kind of USB devices are attached? Are any of these USB devices
preventing detach? Could you check the USB threads using kgdb?
--HPS
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