Re: Amiga PCMCIA network card support

[John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>]

Hi Kars!

On 10/28/19 10:19 AM, Kars de Jong wrote:
>>> Then Real Life happened and I didn't touch my Amiga for 10+ years...
>>
>> .. hmm, is this something that's likely to change? ;)
> 
> I've dusted it off and powered it on this weekend. It still works (RTC
> needs a new battery though), and the 2.6.18 kernel that I modified
> many years ago still works fine with the pcnet_cs driver and my
> Dynalink L10C card.

Cool!

> I then tried a build of master of Geert's tree, which unfortunately
> doesn't fully work due to issues with the Blizzard ESP driver. I also

Could you report these issues? Is it the zorro_esp driver that's causing
problems? Normally the kernel should build fine but if there are issues,
Michael Schmitz would probably be interested to hear about them.

> had similar issues with the last 2.6.2x kernel I tested in 2008(?),
> after switching to the new ESP driver.
> The drive is identified, set to synchronous 10 MHz mode, some
> transfers are done but then it locks up. After the ESP driver runs its
> recovery procedure, the bash that I run as init process exits with
> code 4.

Wait, do you have build issues or do you have issues running the driver?

The new zorro_esp has seen a lot of rewrite. So old bugs might have been
fixed now.

>> Kars, you sound like you're in Europe - will you be on the Chaos
>> Communcation Congress in Leipzig this year? Will there be a Linux m68k
>> table?
> 
> Yes, I'm from Hengelo (the Netherlands), but no, I won't be attending.
> I have no idea whether there will be a Linux/m68k presence.

I don't think there will be any m68k folk at CCC, I'm also not attending
as the event has become too political for my taste.

But I will be attending FOSDEM and Geert is coming as well (at least he
has been to every FOSDEM so far ;)), so we can maybe have a small m68k
meeting. I'm coming with two friends who are also Linux hackers.

>> I don't know how well bounties (like
>> https://www.bountysource.com/issues/80706251-m68k-convert-the-backend-to-mode_cc-so-it-can-be-kept-in-future-releases)
>> work, but I'd certainly willing to chip in with money, time and
>> resources to get this addressed for good.
> 
> I don't need money, I need time :-) I looked at the changes I made to
> 2.6.18, most of it is pretty self contained and should still work on
> 5.x without too many changes, but the io.h changes are more hairy.
> Also, someone once tested this on his A1200 which had a 68030 and I
> believe it broke. Something about ioremap() not accepting physical
> addresses that were already mapped by a fixed mapping (Zorro II
> address space).

Doesn't this depend on the type of accelerator used? I think some of them
cause incompatibilities with the PCMCIA slot, don't they?

>> I think cleaning up the IRQ handling etc would also be (another?) good
>> showcase of linux-m68k and the Amiga platform being very much alive,
>> contrary to what Linus might think :D
> 
> Linus knows it's alive, he just seems to wonder why it won't die ;-)

Because the Amiga community is absolutely die-hard :). This year's Amiga
conference was even extended to two days because of the public interest.

> I will try to prepare a patch for the IRQ handling.

Nice. Thank you! Really cool to see more and more people starting to work
on Linux/m68k again :). This shows that all the effort I put into Debian/m68k
was worth it!

Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - glaubitz@debian.org
`. `'   Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913