The next LTIB bsp for 5200b will use the Sylvain's bestcomm api.

On 6/19/06, Trueskew [off-list ref] wrote:

Hi Andrey,

Thanks for the reply.  I did notice that a few weeks ago and was waiting for
the patch state to be changed from "New" to "Accepted".  Can you give me
more details on how you found out bestcomm won't be included in 2.6?  The
latest downloadable LTIB from Freescale for the Lite5200b includes bestcomm
in several places, and the mpc52xx fec driver uses it, along with the ATA
driver that Sylvain provided a patch for.

As for http://www.246tNt.com/mpc52xx/, it's been coming up "page not found"
for me for those same few weeks when I've tried it off an on, and
www.246tNt.com just has a Welcome line in it.

Sal

-----Original Message-----
From: Andrey Volkov [mailto:avolkov@varma-el.com]
Sent: Monday, June 19, 2006 6:15 AM
To: Trueskew
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: Using bestcomm in an external module (MPC5200B to be exact)

Trueskew wrote:

quoted

I should've let you all know, I'm more of a 2.4 person than a 2.6 person.
So I read what I could on 2.6 difference with 2.4, and it looked like
my easiest choice was to modify the bestcomm code to export a couple
tables and its API functions.  I found that kallsyms has almost all of
the functions I needed to resolve (with 'T' next to them), but they were

still not working.

quoted

I added EXPORT_MODULE(TaskBDReset) and similar declarations in the
bestcomm api code, but that still didn't do the trick for me.  So what is

the trick?

quoted

I think I'm on the right track, I can insmod a module that my driver
needs, see kallsyms get updated, and access the functions directly in
my driver.  I hope I'm close to doing something similar with the
bestcomm functions, can anyone offer me some advice on what else I need to

do?

quoted

Thanks.

Please, check Sylvain's patchset (http://www.246tNt.com/mpc52xx/) _before_
you will do anithing. If be more shortly - Freescale's BestcommAPI
_deprecated_ and will _not_ included to 2.6.xxx.

--
Regards
Andrey Volkov

quoted

________________________________

From: Trueskew [mailto:trueskew@gmail.com]
Sent: Friday, June 16, 2006 9:47 PM
To: 'linuxppc-embedded@ozlabs.org'
Subject: Using bestcomm in an external module (MPC5200B to be exact)


I'm writing a driver for a TI codec attached to the MPC5200B PSC3
codec lines on a Lite5200b.  It's an external module, and I'd like to
use Bestcomm with it.  I've already tried a bunch of horrible things to

get it to work.

quoted

I could say it's close, but by close I mean the FEC still runs, my
stuff doesn't.

1. Can the Bestcomm I/F be used by an external module, or is the
module required to be built in if built-in drivers use Bestcomm?
TasksInitAPI (no so bad) and TasksLoadImage (yeah, bad) aren't really
supposed to be called more than once from what I've read, and the
kernel loads them for ethernet and ATA (no disk in my system if that

matters).

quoted

2. If it can be used by an external module, how would I do it?  I've
tried compiling the source into my module and replicating the
initialization the kernel does in addition to my own stuff.  It's not
too bad, though I don't get any interrupts yet.

The LTIB from Freescale includes AIC23 and AC97 drivers that use Bestcomm.
I built my kernel with them set as modules, and they had the same
unresolved problems that my driver has on insmod, so I'm pessimistic.
If someone could put me out of my misery one way or another, I'd

appreciate it.

quoted

Thanks.
Sal

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