On Sat, Jun 05, 2021 at 01:41:22PM +1200, Michael Schmitz wrote: > Am 05.06.2021 um 10:49 schrieb Brad Boyer: > >I don't see anything in drivers/pcmcia that is obviously an m68k > >system even though I'm pretty sure I remember discussions of supporting > >such hardware in the past. > > There's the APNE driver (Amiga PCMCIA NE2000 clone), which is already > catered for by the current code in io_mm.h. I remember seeing patches for > that driver that would allow support of a variant of the APNE card that were > hard to integrate in the current NE clone code framework. Didn't consider > adding another isa_type for that card at the time - I'll revisit these > patches if I can find them again. > > Supporting PB190 PCMCIA hardware requires adding a new isa_type and the > corresponding IO translation cases. Not much more, for all I can see. > Existing chipset drivers from other architectures ought to work already. > Maybe add a specific block_input() hook as for APNE (but I surmise that > might just be code duplication from generic code in lib8390.c - didn't > check). > > Not sure what card socket code the APNE driver uses - must be one of the > generic variants from drivers/pcmcia. If your PB190 needs something not > already in there, we'd need to add that as well. I had to look a bit, but I found it. The apne driver doesn't use the normal PCMCIA infrastructure at all. There is a custom Amiga PCMCIA thing found in arch/m68k/amiga/pcmcia.c. This could complicate things if we are able to use the common PCMCIA code for trex and try to build a kernel with both that and amiga/pcmcia + apne. At least it does sound like the io macros won't be an issue. Brad Boyer flar@xxxxxxxxxxxxx
