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Date:      Sun, 01 Oct 2017 14:59:19 -0600
From:      Ian Lepore <ian@freebsd.org>
To:        Tomasz CEDRO <tomek@cedro.info>, Hans Petter Selasky <hps@selasky.org>
Cc:        "freebsd-usb@FreeBSD.org" <freebsd-usb@freebsd.org>
Subject:   Re: USB/U3G: Added support for Panasonic CF-F9 GOBI 3G modem to U3G module
Message-ID:  <1506891559.22078.50.camel@freebsd.org>
In-Reply-To: <CAFYkXjmS0vPj8KCDZcOoaWqzZ1%2Bxv7LcAhBjcNtE-sDy%2BJZtSw@mail.gmail.com>
References:  <CAFYkXjnF%2BwkrxNC6nf9s20AytVkszykEcPsr=roiaYugAo5YWg@mail.gmail.com> <ec4baec2-66a9-c5ce-eb89-01f553890a11@selasky.org> <1506465459.73082.168.camel@freebsd.org> <165556bc-c011-bebd-feee-5bbd4cb5943e@selasky.org> <CAFYkXjm=TsHzjXgfFFRyXdSnj3RoeN%2BMNE_K5DBuHphygcqyjw@mail.gmail.com> <1506876055.22078.24.camel@freebsd.org> <CAFYkXjkYsfdWPBJu_wQWZcbHzR9vG0W7qdscBF1ornsZik6gbw@mail.gmail.com> <87d62aba-0b35-8b20-cf1f-9fd2de2d301a@selasky.org> <CAFYkXjkzm%2Bz4c9chtvO_Go9cfnn3_Awpx2m%2BcvNUZR_qxX1-Sw@mail.gmail.com> <1506882193.22078.32.camel@freebsd.org> <CAFYkXjmaJZ7biOtfdHP_-YJ_vKBoj0XXPDZxatraB8iVEgmxeQ@mail.gmail.com> <1506886709.22078.43.camel@freebsd.org> <CAFYkXjmS0vPj8KCDZcOoaWqzZ1%2Bxv7LcAhBjcNtE-sDy%2BJZtSw@mail.gmail.com>

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On Sun, 2017-10-01 at 22:20 +0200, Tomasz CEDRO wrote:
> On Sun, Oct 1, 2017 at 9:38 PM, Ian Lepore <ian@freebsd.org> wrote:
> >=20
> > On Sun, 2017-10-01 at 20:59 +0200, Tomasz CEDRO wrote:
> > >=20
> > > On Sun, Oct 1, 2017 at 8:23 PM, Ian Lepore <ian@freebsd.org>
> > > wrote:
> > > >=20
> > > >=20
> > > > On Sun, 2017-10-01 at 20:17 +0200, Tomasz CEDRO wrote:
> > > > >=20
> > > > >=20
> > > > > [...old stuff...]
> > > I have verified on uath device (more on that below) and it turns
> > > out
> > > $cdev works fine.. but it returns /dev/usb/X.Y.Z not the
> > > /dev/cuaU0
> > > which does not work with this "gobi_loader" utility which
> > > requires
> > > /dev/cuaU0 (CDC / serial port device)... any clues how to replace
> > > $cdev with cuaUX? :-)
> > >=20
> > > Regarding the UATH, I have TP-LINK TL-WN822N Ver2.0 based on
> > > Atheros
> > > 9002[1] and it seems to work with modified /dev/devd/uath.conf
> > > but
> > > the
> > > uathload returns "Operation not permitted" when executed as root
> > > and
> > > during boot..
> > >=20
> > > [1] https://wikidevi.com/wiki/TP-LINK_TL-WN822N_v2
> > >=20
> > Hmmm.=A0=A0I think we need to key off the tty 'attach' event instead =
of
> > the
> > devfs 'create' event.=A0=A0The tty attach for a usb device is the one
> > event
> > that has all the info we need in one message.=A0=A0This is assuming t=
he
> > device name in dmesg on attach is u3g0 or u3g1 or whatever.
> >=20
> > attach 100 {
> > =A0=A0=A0=A0=A0=A0=A0=A0device-name=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0"(u3g)[0-9]+";
> > =A0=A0=A0=A0=A0=A0=A0=A0match "vendor"=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0"=
0x04da";
> > =A0=A0=A0=A0=A0=A0=A0=A0match "product"=A0=A0=A0=A0=A0=A0=A0=A0=A0"0x=
250e";
> > =A0=A0=A0=A0=A0=A0=A0=A0action "/usr/local/bin/gobi_loader /dev/cua$t=
tyname
> > /boot/firmware/gobi/";
> > };
> >=20
> > The way I arrived at this conclusion was to first look in the devd
> > source to figure out/remind myself that devd creates variables from
> > all
> > the tag=3Dvalue tuples it finds in the events coming from the kernel.
> > =A0Then I connected to devd using netcat so I could watch the events
> > as
> > they happen:
> >=20
> > =A0 nc -U /var/run/devd.pipe
> >=20
> > then I plugged in a usb-serial adapter (I have no u3g stuff), which
> > creates a whole lot of events.=A0=A0The last one was the tty attach:
> >=20
> > +uplcom0 at bus=3D1 hubaddr=3D1 port=3D1 devaddr=3D2 interface=3D0
> > ugen=3Dugen1.2
> > vendor=3D0x067b product=3D0x2303 devclass=3D0x00 devsubclass=3D0x00
> > devproto=3D0x00 sernum=3D"" release=3D0x0300 mode=3Dhost intclass=3D0=
xff
> > intsubclass=3D0x00 intprotocol=3D0x00 ttyname=3DU0 ttyports=3D1 on uh=
ub1
> >=20
> > The '+' means it's an attach, the "device-name" variable is set
> > from
> > the space-delimited word after the +, and then vars are created
> > from
> > all the tag=3Dvalue tuples between 'at' and 'on'.=A0=A0So that gives =
us
> > the
> > info to match product and vendor, and ttyname is the suffix to
> > append
> > to /dev/cua to make the cdev name.
> >=20
> > -- Ian
> Awsome! That works!! Thank you Ian!! Thank you for pointing out how
> that was achieved! :-)
>=20
> Is there any way to echo something out to the console to notify user
> that firmware is being updated? This takes some time and it would be
> nice to see something happens in the background.. I cannot see
> anything with action "logging blah"; maybe no need for that?
>=20

I think you can use logger(1) in the action, like:

=A0 action "logger -p kern.crit Loading firmware to cua$ttyname ;
=A0 =A0 /usr/local/bin/gobi_loader etc etc"

The 'kern.crit' should be a high enough priority to ensure it comes out
on the console, but it depends on syslog.conf of course. =A0If
gobi_loader outputs a nice message it could be piped to logger(1)
instead of putting the message in the command.

-- Ian




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