[SLOF] [PATCH 1/2] Move archsupport.fs into board-qemu directory

[Thomas Huth]

On 04.01.2016 11:12, Nikunj A Dadhania wrote:
> Thomas Huth <thuth at redhat.com> writes:
> 
>> On 04.01.2016 10:17, Thomas Huth wrote:
>>> On 23.12.2015 02:43, Alexey Kardashevskiy wrote:
>>>> On 12/22/2015 07:25 AM, Thomas Huth wrote:
>>>>> The "hv-cas" hypercall is only available on board-qemu.
>>>>> Including archsupport.fs on board-js2x breaks the boot
>>>>> process there. Thus the archsupport.fs file should
>>>>> reside in the board-qemu/slof directory instead and
>>>>> only be included from there.
>>>>
>>>>
>>>> Thanks, applied.
>>>>
>>>> Does js2x boot now? :)
>>>
>>> Unfortunately not yet, there are a couple of problems left:
>>>
>>> - dma-alloc & dma-map-in and friends do not work yet, causing the
>>>   libusb code to abort when trying to allocate memory
>>>   => I have a patch for this pretty much ready, will send it later
>>>
>>> - But even with the dma-alloc fixed, the new libusb code does not seem
>>>   to work right with real hardware yet, I get messages about STALLs and
>>>   timeouts when I connect an USB device
>>
>> FWIW, here's the console output of the USB scan:
>>
>> Scanning USB
>>   OHCI: initializing
>>   OHCI: initializing
>>   EHCI: Initializing
>>   OHCI: initializing
>>     USB Storage
>>        SCSI: Looking for devices
>> USB: Error STALL 0xE967000
>> ED Halted
>> ohci_transfer_bulk: headp 0E967011 tailp 0E967010 next_td 00000000 attr
>> 00405101
> 
> Controller asserted a HALT on the endpoint. Can you enable ohci debug
> usb-ohci.c - OHCI_DEBUG_PACKET and OHCI_DEBUG

Now I'm back from vacation ... but currently I don't have the
PowerStation with me anymore .... I'll try when I'm back at the
location where I left it...

Anyway, IIRC the original Forth USB stack had similar issues with
stalled USB storage devices once - from time to time, real USB storage
devices seemed to report "STALLED" randomly, maybe because they could
not deliver the data fast enough?
So the original Forth USB stack was equipped with some code to handle
the "STALLED" state. If you're interested, search for STALLED in:
https://github.com/aik/SLOF/blob/slof-JX-1.7.0-5/slof/fs/usb/usb-storage.fs

Maybe the new USB stack needs some similar handling code, too, if it
is not there yet?

>> Timed out waiting for interrupt 45
>> Timed out waiting for interrupt 45
>> USB-DISK: Bulk commad failed!
>>           101000000000000 DISK     : "Ut163    USB2FlashStorage 0.00"
>>   OHCI: initializing
>> ohci_send_ctrl: timed out - failed
>> Request: 80 06 00 01 00 00 08 00
>> USB: Error DEVICENOTRESPONDING 0xE96ED00
>> Timed out waiting for interrupt 45
>> usb-ohci: unable to setup device on port 1
>>
>> Any ideas what could cause these issues?
> 
> 4 OHCI controller and one EHCI controller are there on the js2x ?
> This looks a bit strange. It might have companion controller which is
> not supported in SLOF USB stack.

Ah, that's because the PowerStation (and js21) has a built-in USB chip,
which features two OHCI controllers and one EHCI - which is however broken
and thus disabled by the firmware. To get USB 2.0 speed, too, I've once
added a USB 2.0 PCI card which comes with two more OHCI controllers and one
EHCI controller, so that's why there are 4 OHCI controllers in above output.

 Thomas