Re: Lemote mini-pc NOT supporting external usb-2.0 Trendnet TU-ET100?

[Javier Vasquez <j.e.vasquez.v@gmail.com>]

On Thu, Feb 3, 2011 at 10:34 PM, Javier Vasquez <j.e.vasquez.v@gmail.com> wrote:
> Hi,
>
> With a Lemote mini-pc 2F6004:
>
> % cat /proc/cpuinfo
> system type             : lemote-fuloong-2f-box
> processor               : 0
> cpu model               : ICT Loongson-2 V0.3  FPU V0.1
> BogoMIPS                : 530.43
> wait instruction        : yes
> microsecond timers      : yes
> tlb_entries             : 64
> extra interrupt vector  : no
> hardware watchpoint     : yes, count: 0, address/irw mask: []
> ASEs implemented        :
> shadow register sets    : 1
> core                    : 0
> VCED exceptions         : not available
> VCEI exceptions         : not available
>
> I tried enabling an external USB NIC, using a TrendNet TU2-ET100,
> which is supported by usbnet driver:
>
> http://www.linux-usb.org/usbnet
>
> I'm using the debian experimental kernel:
>
> % uname -a
> Linux mini-0 2.6.37-trunk-loongson-2f #1 Fri Jan 7 10:10:56 UTC 2011
> mips64 GNU/Linux
>
> Under debian gnu/linux.  Notice I installed debian by ffirst
> installing gnew-sense, sincer debian doesn't suppot lemote under its
> installers yet.
>
> I could actually see the external NIC work for a little while, and
> after copying from another machine a 104M file, the NIC was just
> shutdown:
>
> [ 4763.132000] usb 1-1: new high speed USB device using ehci_hcd and address 5
> [ 4763.276000] usb 1-1: New USB device found, idVendor=0b95, idProduct=7720
> [ 4763.276000] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
> [ 4763.276000] usb 1-1: Product: AX88772
> [ 4763.276000] usb 1-1: Manufacturer: ASIX Elec. Corp.
> [ 4763.276000] usb 1-1: SerialNumber: 000001
> [ 4764.260000] asix 1-1:1.0: eth1: register 'asix' at
> usb-0000:00:0e.5-1, ASIX AX88772 USB 2.0 Ethernet, 00:50:b6:08:1c:5f
> [ 4764.260000] usbcore: registered new interface driver asix
> [ 6019.936000] eth1: link up, 100Mbps, full-duplex, lpa 0x45E1
> [ 6020.140000] eth1: link up, 100Mbps, full-duplex, lpa 0x45E1
> [ 6030.176000] eth1: no IPv6 routers present
> [ 6123.704000] ehci_hcd 0000:00:0e.5: force halt; handshake
> 9000000050071014 00004000 00000000 -> -145
> [ 6123.704000] ehci_hcd 0000:00:0e.5: can't reschedule qh
> 98000000bb084f00, err -145
> [ 6123.704000] ehci_hcd 0000:00:0e.5: force halt; handshake
> 9000000050071014 00004000 00004000 -> -145
> [ 6123.704000] ehci_hcd 0000:00:0e.5: HC died; cleaning up
> [ 6123.716000] usb 1-1: USB disconnect, address 5
> [ 6123.716000] asix 1-1:1.0: eth1: unregister 'asix'
> usb-0000:00:0e.5-1, ASIX AX88772 USB 2.0 Ethernet
>
> I'm not sure whether this is a kernel bug, or a HW problem.  Recently
> I had problems with the internal NIC most probably due to HW problems,
> on the checksum computation by HW...  I need to enable a 2nd NIC in
> order to make the mini-pc work as a gateway mini-server.  Perhaps
> someone else has experiences with this mini-pc, and has already make
> an external NIC work already, and if so any hints would be
> appreciated.  Also any hints on how to debug and file a debian
> experimental linux bug, that'd also work out, :-)  If faster solution
> is to use an external NIC known to work, please let me know so I can
> try acquiring it...
>
> Thanks,
>
> --
> Javier.
>

I've also tried the gnew-sense (metad) linux kernel with the same result:

% uname -a
Linux mini-0 2.6.37-libre-lemote #1 PREEMPT Thu Jan 6 11:56:46 UTC
2011 mips64 GNU/Linux

Unfortunately it didn't work either, :-(

So it might be that the USB controller is buggy?  Any ways, just
wanted to report in case someone might ggest that...  Any suggestions
are welcome...

Thanks,


-- 
Javier.