Updates and Problems on "Raspberry Pi USB and Ethernet Support" Project

[Alan Cudmore]

I'm not sure what I did to get the extra debug messages. When I run the
usb01 example, I just see:
nexus0: <RTEMS Nexus device>

I will have to read up on how the libbsd drivers are used, and what needs
to be done to set them up in nexus-devices.h

Chris: do you know if it would help to boot FreeBSD on the Pi to see the
messages and look at what drivers are used?

Alan



On Tue, Jul 12, 2016 at 12:41 AM, Deval Shah <deval.maker at gmail.com> wrote:

> I am sorry, I forgot to mention those details.
>
> I have added --freebsd-options=bootverbose,verbose_sysinit,bus_debug for
> more log, while configuring waf.
>
> There are two branches currently. RaspberryPi_USB and rpi_usb. Both are
> same as far as my added code is concerned. rpi_usb has a different starting
> point and not updated while the other one is up to date.
>
> The problem with the RaspberryPi_USB was that due to some other updates in
> mainline, I was not getting the device_printfs. So I switched back to the
> old repo of mine.
>
> Also, I am surprised how you are getting the device_printfs on my latest
> code. https://lists.rtems.org/pipermail/devel/2016-July/015557.html
>
> Regards,
> Deval Shah
>
> On Tue, Jul 12, 2016 at 7:05 AM, Alan Cudmore <alan.cudmore at gmail.com>
> wrote:
>
>> Hi Deval,
>>
>> What code do I need to add to try your test?
>>
>> I am using the items git head kernel, and your rtems-libbsd
>> RaspberryPi_USB branch.
>> When I run init01 on my Pi Zero, I get the output below.
>>
>> Alan
>>
>> *** LIBBSD INIT 1 TEST ***
>> nexus0: <RTEMS Nexus device>
>> bcm283x_dwcotg0: <DWC OTG 2.0 integrated USB controller (bcm283x)> on
>> nexus0
>> usbus0 on bcm283x_dwcotg0
>> usbus0: 480Mbps High Speed USB v2.0
>> uhub0: <DWCOTG OTG Root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus0
>> Sleeping to see what happens
>> uhub0: 1 port with 1 removable, self powered
>>
>>
>>
>> On Jul 11, 2016, at 10:37 AM, Deval Shah <deval.maker at gmail.com> wrote:
>>
>> Hello all,
>>
>> I am trying to add usb_ethernet (smsc) driver for raspberry pi for both
>> USB and Ethernet support.
>> Now I have added the required files. But the USB device is not getting
>> power. To get the compilation error-less, I have applied a hack.
>>
>> if_smsc.c is using the function “usbd_m_copy_in” which is present in the
>> file sys/dev/usb/usb_busdma.c. But due to this macro #if USB_HAVE_MBUF the
>> function was not getting compiled. So I have commented out the macro and
>> let the function compile.
>>
>> Now ideally I should have used the DMA controller. Here I don't know the
>> status of DMA's functions and their usage. Any pointers on that ?
>> I believe the problem is secondary for the USB to function. Anyhow the
>> USB devices should get the power if the code is added. I suspect there is
>> no proper linking between the drivers. (i.e. dwcotg, bcm283x_dwcotg, ushub,
>> smsc, uhub, usb.) I would like some insights on how these interact.
>>
>> I have added following lines in the nexus-devices.h file under
>> Raspberry-pi-BSP.
>>
>> SYSINIT_DRIVER_REFERENCE(bcm283x_dwcotg, nexus);
>> SYSINIT_DRIVER_REFERENCE(smsc, uhub);
>> SYSINIT_DRIVER_REFERENCE(smsc, uether);
>> SYSINIT_DRIVER_REFERENCE(smsc, usb);
>> SYSINIT_DRIVER_REFERENCE(smsc, ether);
>> SYSINIT_DRIVER_REFERENCE(smsc, miibus);
>>
>> I am also attaching the log of INIT01 Test.
>>
>> I need help at this point. I am kind of stuck here.
>>
>> Thank you in advance.
>> Deval Shah
>> <libbsd-init01-test.log>_______________________________________________
>> devel mailing list
>> devel at rtems.org
>> http://lists.rtems.org/mailman/listinfo/devel
>>
>>
>>
>
>
> --
> Deval Shah
> Graduate Student,
> B.E. (Hons.) Electrical and Electronics Engineering
> BITS Pilani Hyderabad Campus <http://www.bits-pilani.ac.in/hyderabad/>
>
> Github Profile <https://github.com/deval-maker>
>
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