Re: [Xenomai] RaspberryPi kernel 3.8 issue

[Adam Vaughan <vaughana@umich.edu>]

I forgot to add the *.txt extension to the above, sorry about that.


On Tue, Feb 25, 2014 at 6:42 PM, Adam Vaughan <vaughana@umich.edu> wrote:

> I don't have a WiFi or Bluetooth adapter with me to try at the moment, but
> I just tried booting with my USB flash drive installed prior to power on
> and didn't see an issue both with and without the USB FIQ enabled.  I can
> try with a Bluetooth adapter tomorrow, if needed.
>
> Your logs are more useful since they show the actual issue, but maybe my
> boot logs (attached) will be at least a little helpful in troubleshooting?
>  Also, the patch I listed above is only needed if you want to boot with the
> USB FIQ disabled.
>
>
> On Tue, Feb 25, 2014 at 6:20 PM, Gregory Dymarek <gregd72002@gmail.com>wrote:
>
>> well, this does not work for me. It boots fine when there is no USB device
>> plugged in.
>> However, when my WIFI or bluetooth adapter is plugged in, the boot log
>> shows: http://pastebin.com/vjLJVDGS
>>
>> I also tried the patch Adam suggests but it does not seem to affect
>> anything.
>>
>>
>>
>> On 25 February 2014 22:30, Adam Vaughan <vaughana@umich.edu> wrote:
>>
>> > I just tried the above patch and the warning doesn't show up at boot
>> > anymore.  I tried unplugging and plugging in a flash drive / keyboard
>> and
>> > saw no issues in dmesg.
>> >
>> > I mentioned it in a previous email, but just as a friendly reminder this
>> > patch is still needed to allow you to boot with a disabled FIQ:
>> >
>> > diff --git a/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
>> > b/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
>> > index 19abea0..78172ea 100644
>> > --- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
>> > +++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
>> > @@ -742,8 +742,10 @@ int32_t dwc_otg_hcd_handle_sof_intr(dwc_otg_hcd_t *
>> > hcd)
>> >     }
>> >
>> >     /* Clear interrupt */
>> > -   //gintsts.b.sofintr = 1;
>> > -   //DWC_WRITE_REG32(&hcd->core_if->core_global_regs->gintsts,
>> > gintsts.d32);
>> > +   if (!fiq_fix_enable) {
>> > +       gintsts.b.sofintr = 1;
>> > +       DWC_WRITE_REG32(&hcd->core_if->core_global_regs->gintsts,
>> > gintsts.d32);
>> > +   }
>> >
>> >     return 1;
>> >  }
>> >
>> >
>> > On Tue, Feb 25, 2014 at 4:31 PM, Gilles Chanteperdrix <
>> > gilles.chanteperdrix@xenomai.org> wrote:
>> >
>> >> On 02/25/2014 10:09 PM, Gregory Dymarek wrote:
>> >> > So the frame freeze I got on my version is on line 145 in here:
>> >> >
>> https://github.com/raspberrypi/linux/blob/rpi-3.8.y/kernel/irq/handle.c
>> >> >
>> >> > The dwc_otg_hcd_handle_intr is here:
>> >> >
>> >>
>> https://github.com/raspberrypi/linux/blob/rpi-3.8.y/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
>> >> >
>> >> >
>> >> > Is the line 523 the problem?
>> >> >     local_fiq_enable();
>> >>
>> >> Please try the following patch:
>> >>
>> >> diff --git a/arch/arm/include/asm/ipipe_hwirq.h
>> >> b/arch/arm/include/asm/ipipe_hwirq.h
>> >> index 6b864aa..bd8cda1 100644
>> >> --- a/arch/arm/include/asm/ipipe_hwirq.h
>> >> +++ b/arch/arm/include/asm/ipipe_hwirq.h
>> >> @@ -200,9 +200,9 @@ static inline void hard_local_irq_restore(unsigned
>> >> long x)
>> >>                 ipipe_unstall_root();                   \
>> >>         } while (0)
>> >>
>> >> -#define local_fiq_enable() ipipe_unstall_root()
>> >> +#define local_fiq_enable() hard_local_fiq_enable_notrace()
>> >>
>> >> -#define local_fiq_disable() ipipe_stall_root()
>> >> +#define local_fiq_disable() hard_local_fiq_disable_notrace()
>> >>
>> >>  #define arch_local_irq_restore(flags)                  \
>> >>         do {                                            \
>> >>
>> >>
>> >> --
>> >>                                                                 Gilles.
>> >>
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>> >>
>> >
>> >
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>
>