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 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
