USB naks and timeouts

[Marko Virkki]

Hello

Has anyone seen a lot of get_port_status timeouts and tx errors using USB in
mpc823e? Can anyone explain what could be a reason for getting huge amount
of nak and timeout errors? See /proc/driver/usb below. Bitlength and SOF
frames seems to be OK. The RXD signal from PDIUSB11A follows exactly the
state of the USB bus and there seems not to be delay more than 5-6 ns
between rxp/rxn and rxd.

I've got the USB working a little bit on our custom board with a slightly
modified MVL2.1 embeddedplanet_rpxlite 2.4.17 kernel. I can get data for
example by cat:ing  mouse0 in /dev/input. The mouse is connected through the
hub in Cherry 3000 USB keyboard. The keyboard seems to work also (expect
those get_port_status timeouts).

I can also connect 32M IBM Memory Key to USB but I'm not able to mount the
disk. See console capture below. I will not get errors at all when
connecting this device directly to the bus but the system hangs. If I
connect this device through the hub in keyboard the system will reset the
port of hub as soon as I press key on console keyboard or do something else
time consuming operation.

TIA
br. Marko



-- booting --

usb.c: registered new driver usbdevfs
usb.c: registered new driver hub
m8xxhci: initializing controller
m8xxhci_setup()
usb.c: new USB bus registered, assigned bus number 1
m8xxhci_start_controller()
m8xxhci: MPC823e (mask 1)
m8xxhci: USING BRG3 (sysclk) for USB clock!
m8xxhci: ring sizes: rx 32, tx 40
m8xxhci: assert reset
m8xxhci: enable USB controller
m8xxhci_timer_setup()
m8xxhci: timer, intfreq 48005120, busfreq 48005120, count 3000
m8xxhci: USING TIMER1 FOR SOF!
m8xxhci: timer1 started
m8xxhci: usb bus is NOT idle
Product: USB MPC8xx Root Hub
SerialNumber: ff000a00
hub.c: USB hub found
hub.c: 1 port detected
rh_submit_urb() int pipe
rh_port_power(1)
m8xxhci: initializing done
usb.c: registered new driver hiddev
usb.c: registered new driver hid
hid-core.c: v1.8 Andreas Gal, Vojtech Pavlik <vojtech at suse.cz>
hid-core.c: USB HID support drivers
Initializing USB Mass Storage driver...
usb.c: registered new driver usb-storage
USB Mass Storage support registered.
mice: PS/2 mouse device common for all mice

-- Cherry 3000 connected --

rh_port_reset(1)
m8xxhci: assert reset
hub.c: USB new device connect on bus1/1, assigned device number 12
hub.c: USB hub found
hub.c: 5 ports detected
hub.c: get_port_status failed (err = -110)
hub.c: USB new device connect on bus1/1/4, assigned device number 13
input0: USB HID v0.01 Keyboard [046a:0001] on usb1:13.0
handle_scancode(scancode=0x23, down=1)
handle_scancode(scancode=0x22, down=0)
hub.c: get_port_status failed (err = -110)              <<<<<<<<
handle_scancode(scancode=0x21, down=0)

-- IBM Memory key connected directly to USB bus

rh_port_reset(1)
m8xxhci: assert reset
hub.c: USB new device connect on bus1/1, assigned device number 2
Manufacturer: IBM
Product: IBM USB Memory Key
scsi0 : SCSI emulation for USB Mass Storage devices
  Vendor: IBM       Model: IBM USB Memory K  Rev: 0100
  Type:   Direct-Access                      ANSI SCSI revision: 02
Attached scsi removable disk sda at scsi0, channel 0, id 0, lun 0

[/]#
[/]# mount -t vfat /dev/sda1 /mnt/memkey/
-ENOENT
-ENOENT
-ENOENT

I've added these ENOENT printks in transport.c line 1124.

-- IBM Memory key connected to USB bus via Cherrys hub

hub.c: USB new device connect on bus1/1/5, assigned device number 4
Manufacturer: IBM
Product: IBM USB Memory Key
scsi0 : SCSI emulation for USB Mass Storage devices
  Vendor: IBM       Model: IBM USB Memory K  Rev: 0100
  Type:   Direct-Access                      ANSI SCSI revision: 02
Attached scsi removable disk sda at scsi0, channel 0, id 0, lun 0
sda : READ CAPACITY failed.
sda : status = 0, message = 00, host = 7, driver = 00
sda : sense not available.
sda : block size assumed to be 512 bytes, disk size 1GB.
Partition check:
 sda:<7>usb-storage: queuecommand() called
SCSI disk error : host 0 channel 0 id 0 lun 0 return code = 70000
 I/O error: dev 08:00, sector 0
SCSI disk error : host 0 channel 0 id 0 lun 0 return code = 70000
 I/O error: dev 08:00, sector 2
SCSI disk error : host 0 channel 0 id 0 lun 0 return code = 70000
 I/O error: dev 08:00, sector 4
SCSI disk error : host 0 channel 0 id 0 lun 0 return code = 70000
 I/O error: dev 08:00, sector 6
SCSI disk error : host 0 channel 0 id 0 lun 0 return code = 70000
 I/O error: dev 08:00, sector 0
SCSI disk error : host 0 channel 0 id 0 lun 0 return code = 70000
 I/O error: dev 08:00, sector 2
SCSI disk error : host 0 channel 0 id 0 lun 0 return code = 70000
 I/O error: dev 08:00, sector 4
SCSI disk error : host 0 channel 0 id 0 lun 0 return code = 70000
 I/O error: dev 08:00, sector 6
 unable to read partition table
hub.c: already running port 5 disabled by hub (EMI?), re-enabling...
usb.c: USB disconnect on device 4
hub.c: USB new device connect on bus1/1/5, assigned device number 5
Manufacturer: IBM
Product: IBM USB Memory Key
[/]#
--- After a while
[/]#
hub.c: already running port 5 disabled by hub (EMI?), re-enabling...
usb.c: USB disconnect on device 5
hub.c: USB new device connect on bus1/1/5, assigned device number 6
usb.c: USB device not accepting new address=6 (error=-110)
[/]# hub.c: USB new device connect on bus1/1/5, assigned device number 7
Manufacturer: IBM
Product: IBM USB Memory Key
-------------------------------------------------------



cat /proc/driver/usb

SB host controller v1.2:
controller enabled
root hub port state connected, status CCS PES PPS
ints: cpm 118083, timer 665788, isrs 783871
      idle 118083, rst 12, bsy 0, rxb 15459, txb 45831
errs: tx0 72213, timeout 581, underrun 0
      rx  0, nak 71632, stall 0, mismatch 0
comp: iso 0, intr 2612, ctrl 15297, bulk 60
root hub sends 2669
retransmits    581
tx restarts    72213

frame lists: current c01ec594, next c01ec560
active_qe: 00000000
current: c01ec594, total_bytes 0
next: c01ec560, total_bytes 0

###########################################

This message has been scanned by F-Secure Anti-Virus for Microsoft Exchange.
For more information, connect to http://www.F-Secure.com/

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/