Driver - HDLC 83xx QUICC Engine??

Driver - HDLC 83xx QUICC Engine??

[Russell McGuire]

All,

Does anyone know of a project or existing driver for supporting HDLC for the

MPC83xx or MPC82XX Freescale CPUs?

Looking to run raw HDLC over various Ethernet or T1 links.

-Russ

SV: Driver - HDLC 83xx QUICC Engine??

[Joakim Tjernlund]

> -----Ursprungligt meddelande-----
> Fr=E5n: =
linuxppc-embedded-bounces+joakim.tjernlund=3Dlumentis.se@ozlabs.org =
[mailto:linuxppc-embedded-
> bounces+joakim.tjernlund=3Dlumentis.se@ozlabs.org] F=F6r Russell =
McGuire
> Skickat: den 15 januari 2008 20:52
> Till: linuxppc-embedded@ozlabs.org
> =C4mne: Driver - HDLC 83xx QUICC Engine??
>=20
> All,
>=20
> Does anyone know of a project or existing driver for supporting HDLC =
for the
>=20
> MPC83xx or MPC82XX Freescale CPUs?
>=20
> Looking to run raw HDLC over various Ethernet or T1 links.
>=20
> -Russ

Me too. Perhaps not, I will be looking at presenting a Ethernet i/f to =
the kernel but
sending out HDLC frames containing the Ethernet packet. If you find/have =
anything
that helps me do that, send it my way please.

     Jocke

RE: Driver - HDLC 83xx QUICC Engine??

[Russell McGuire]

Jocke,

I'll let you know if I find any.  For a starting point, I have an QE ATM
driver, that is more than likely similar in design <though no Ethernet
interface>, as it supports the QE engine, and just turns the UCC into =
ATM
mode, as opposed to HDLC mode. Would imagine the buffering, IO, =
interrupts
are similar. I am still in process of porting it up from the 82xx CPU.=20

Although HDLC how it registers itself into the kernel is a mystery to =
me, I
am having trouble finding any HDLC drivers to model this after.  Know of =
any
specs? API? Etc...

-Russ
> -----Original Message-----
> From: Joakim Tjernlund [mailto:joakim.tjernlund@transmode.se]
> Sent: Tuesday, January 15, 2008 4:19 PM
> To: rmcguire@videopresence.com; linuxppc-embedded@ozlabs.org
> Subject: SV: Driver - HDLC 83xx QUICC Engine??
>=20
> > -----Ursprungligt meddelande-----
> > Fr=E5n: =
linuxppc-embedded-bounces+joakim.tjernlund=3Dlumentis.se@ozlabs.org
> [mailto:linuxppc-embedded-
> > bounces+joakim.tjernlund=3Dlumentis.se@ozlabs.org] F=F6r Russell =
McGuire
> > Skickat: den 15 januari 2008 20:52
> > Till: linuxppc-embedded@ozlabs.org
> > =C4mne: Driver - HDLC 83xx QUICC Engine??
> >
> > All,
> >
> > Does anyone know of a project or existing driver for supporting HDLC =
for
> the
> >
> > MPC83xx or MPC82XX Freescale CPUs?
> >
> > Looking to run raw HDLC over various Ethernet or T1 links.
> >
> > -Russ
>=20
> Me too. Perhaps not, I will be looking at presenting a Ethernet i/f to =
the
> kernel but
> sending out HDLC frames containing the Ethernet packet. If you =
find/have
> anything
> that helps me do that, send it my way please.
>=20
>      Jocke

Re: Driver - HDLC 83xx QUICC Engine??

[Joakim Tjernlund]

> -----Ursprungligt meddelande-----
> Fr=E5n: Russell McGuire [mailto:rmcguire@videopresence.com]
> Skickat: den 16 januari 2008 01:31
> Till: 'Joakim Tjernlund'
> Kopia: linuxppc-embedded@ozlabs.org
> =C4mne: RE: Driver - HDLC 83xx QUICC Engine??
>=20
> Jocke,
>=20
> I'll let you know if I find any.  For a starting point, I have an QE =
ATM
> driver, that is more than likely similar in design <though no Ethernet
> interface>, as it supports the QE engine, and just turns the UCC into =
ATM
> mode, as opposed to HDLC mode. Would imagine the buffering, IO, =
interrupts
> are similar. I am still in process of porting it up from the 82xx CPU.
>=20
> Although HDLC how it registers itself into the kernel is a mystery to =
me, I
> am having trouble finding any HDLC drivers to model this after.  Know =
of any
> specs? API? Etc...

Sorry but I don't know. Luckily for me I don't have too either.

 Jocke

RE: Driver - HDLC 83xx QUICC Engine??

[Russell McGuire]

Jocke,

I ran across this patch doing some looking around. It isn't in the =
kernel I
downloaded a while ago and have been working with, and I am not sure of =
the
real extents of its support.

Maybe Kim or Kumar can fill us in, on if it is what we are looking for.

http://patchwork.ozlabs.org/linuxppc/patch?id=3D7262


In any regards, it definitely looks like something we should be checking
out.

-Russ
> -----Original Message-----
> From: Joakim Tjernlund [mailto:joakim.tjernlund@transmode.se]
> Sent: Tuesday, January 15, 2008 4:19 PM
> To: rmcguire@videopresence.com; linuxppc-embedded@ozlabs.org
> Subject: SV: Driver - HDLC 83xx QUICC Engine??
>=20
> > -----Ursprungligt meddelande-----
> > Fr=E5n: =
linuxppc-embedded-bounces+joakim.tjernlund=3Dlumentis.se@ozlabs.org
> [mailto:linuxppc-embedded-
> > bounces+joakim.tjernlund=3Dlumentis.se@ozlabs.org] F=F6r Russell =
McGuire
> > Skickat: den 15 januari 2008 20:52
> > Till: linuxppc-embedded@ozlabs.org
> > =C4mne: Driver - HDLC 83xx QUICC Engine??
> >
> > All,
> >
> > Does anyone know of a project or existing driver for supporting HDLC =
for
> the
> >
> > MPC83xx or MPC82XX Freescale CPUs?
> >
> > Looking to run raw HDLC over various Ethernet or T1 links.
> >
> > -Russ
>=20
> Me too. Perhaps not, I will be looking at presenting a Ethernet i/f to =
the
> kernel but
> sending out HDLC frames containing the Ethernet packet. If you =
find/have
> anything
> that helps me do that, send it my way please.
>=20
>      Jocke

Re: Driver - HDLC 83xx QUICC Engine??

[Joakim Tjernlund]

eh, that looks like something that is part of the kernel already.
Am I missing something?

      Jocke

> -----Ursprungligt meddelande-----
> Fr=E5n: Russell McGuire [mailto:rmcguire@videopresence.com]
> Skickat: den 17 januari 2008 23:12
> Till: 'Joakim Tjernlund'
> Kopia: linuxppc-embedded@ozlabs.org; 'Kim Phillips'
> =C4mne: RE: Driver - HDLC 83xx QUICC Engine??
>=20
> Jocke,
>=20
> I ran across this patch doing some looking around. It isn't in the =
kernel I
> downloaded a while ago and have been working with, and I am not sure =
of the
> real extents of its support.
>=20
> Maybe Kim or Kumar can fill us in, on if it is what we are looking =
for.
>=20
> http://patchwork.ozlabs.org/linuxppc/patch?id=3D7262
>=20
>=20
> In any regards, it definitely looks like something we should be =
checking
> out.
>=20
> -Russ
> > -----Original Message-----
> > From: Joakim Tjernlund [mailto:joakim.tjernlund@transmode.se]
> > Sent: Tuesday, January 15, 2008 4:19 PM
> > To: rmcguire@videopresence.com; linuxppc-embedded@ozlabs.org
> > Subject: SV: Driver - HDLC 83xx QUICC Engine??
> >
> > > -----Ursprungligt meddelande-----
> > > Fr=E5n: =
linuxppc-embedded-bounces+joakim.tjernlund=3Dlumentis.se@ozlabs.org
> > [mailto:linuxppc-embedded-
> > > bounces+joakim.tjernlund=3Dlumentis.se@ozlabs.org] F=F6r Russell =
McGuire
> > > Skickat: den 15 januari 2008 20:52
> > > Till: linuxppc-embedded@ozlabs.org
> > > =C4mne: Driver - HDLC 83xx QUICC Engine??
> > >
> > > All,
> > >
> > > Does anyone know of a project or existing driver for supporting =
HDLC for
> > the
> > >
> > > MPC83xx or MPC82XX Freescale CPUs?
> > >
> > > Looking to run raw HDLC over various Ethernet or T1 links.
> > >
> > > -Russ
> >
> > Me too. Perhaps not, I will be looking at presenting a Ethernet i/f =
to the
> > kernel but
> > sending out HDLC frames containing the Ethernet packet. If you =
find/have
> > anything
> > that helps me do that, send it my way please.
> >
> >      Jocke
>=20
>=20