Hi Geert,
On Mon, Jan 25, 2016 at 9:05 PM, Geert Uytterhoeven
<geert@xxxxxxxxxxxxxx> wrote:
Perhaps this is an ARAnyM quirk?
The MR_ARBITRATE bit should remain set until the driver clears it (or the
reset logic clears it). But it looks like aranym simply discards writes to
the mode register, such that reads always return 0.
Compare
http://sourceforge.net/p/aranym/code/ci/master/tree/src/ncr5380.cpp
with the MAME/MESS emulated device
https://github.com/mamedev/mame/blob/master/src/devices/machine/ncr5380.cpp
I don't know what the Hatari emulator does.
In principle I think that Linux drivers should not carry workarounds for
emulators.
Please consider ARAnyM is the current m68k workhorse, so it would be
nice to handle this someway.
Alternatively, we need to fix ARAnyM, or can make the creation of the
atari_scsi platform device conditional on not running under ARAnyM.
Should be possible based on the machine cookie, unless that gets
munged by kernel startup code.
(Making the 5380 emulation a bit more complete such as in the MAME
source snippet would be my preference, too)
Cheers,
Michael
Thanks!
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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