Ubiquiti EdgeRouter Lite works multi-user with -CURRENT.

[Warner Losh]

On May 17, 2013, at 1:22 PM, Milan Obuch wrote:

> On Thu, 16 May 2013 19:10:26 +0100, Joe Holden <lists at rewt.org.uk>
> wrote:
> 
> [ snip ]
> 
>>> for this quick test I used OCTEON1 kernel config with some necessary
>>> tweaks, device gpio is commented out, maybe this will be enough for
>>> enable octeon_gpio.c (looking at files.octeon1 it seems to be
>>> possible). I will test it, definitely.
>> 
>> There is only one pin exposed via gpio:
>> 
>> root at erl1:~ # gpioctl -f /dev/gpioc0 -l -v
>> pin 07: 0       F/D<IN>, caps:<IN,OUT>
>> 
>> Not sure if it maps to anything usable, haven't played with it yet -
>> the other header is EJTAG according to Cavium docs.
> 
> I built new kernel with device gpio, something is not working - F/D
> should mean 'factory default' aka 'reset switch', but it does not sense
> status ot that switch. No matter whether pressed or not, gpioctl still
> reports 0.
> 
> Also, somehow strangely, in dmesg:
> 
> gpio0: <Cavium Octeon GPIO driver> on ciu0
> gpio0: [GIANT-LOCKED]
> gpio0: [GIANT-LOCKED]
> gpio0: [GIANT-LOCKED]
> gpio0: [GIANT-LOCKED]
> gpio0: [GIANT-LOCKED]
> gpio0: [GIANT-LOCKED]
> gpio0: [GIANT-LOCKED]
> gpio0: [GIANT-LOCKED]
> gpio0: [GIANT-LOCKED]
> gpio0: [GIANT-LOCKED]
> gpio0: [GIANT-LOCKED]
> gpio0: [GIANT-LOCKED]
> gpio0: [GIANT-LOCKED]
> gpio0: [GIANT-LOCKED]
> gpio0: [GIANT-LOCKED]
> gpio0: [GIANT-LOCKED]
> gpio0: [pin0] output=0, invinput=0, intr=0, intr_type=level
> gpio0: [pin1] output=0, invinput=0, intr=0, intr_type=level
> gpio0: [pin2] output=0, invinput=0, intr=0, intr_type=level
> gpio0: [pin3] output=0, invinput=0, intr=0, intr_type=level
> gpio0: [pin4] output=0, invinput=0, intr=0, intr_type=level
> gpio0: [pin5] output=0, invinput=0, intr=0, intr_type=level
> gpio0: [pin6] output=0, invinput=0, intr=0, intr_type=level
> gpio0: [pin7] output=0, invinput=0, intr=0, intr_type=level
> gpio0: [pin8] output=0, invinput=0, intr=0, intr_type=level
> gpio0: [pin9] output=0, invinput=0, intr=0, intr_type=level
> gpio0: [pin10] output=0, invinput=0, intr=0, intr_type=level
> gpio0: [pin11] output=0, invinput=0, intr=0, intr_type=level
> gpio0: [pin12] output=0, invinput=0, intr=0, intr_type=level
> gpio0: [pin13] output=0, invinput=0, intr=0, intr_type=level
> gpio0: [pin14] output=0, invinput=0, intr=0, intr_type=level
> gpio0: [pin15] output=0, invinput=0, intr=0, intr_type=level
> gpioc0: <GPIO controller> on gpio0
> gpiobus0: <GPIO bus> on gpio0
> 
> GIANT-LOCKED line is there 16 times, once for every one from 16 pins -
> why?

Because it isn't marked as MPSAFE? Chances are something will need to be done to make it mp safe though.

Warner