where should readb based/platform specific memcpy_fromio() be?
yashi at atmark-techno.com
Sat Oct 1 06:02:17 EST 2005
I'd like to add a variant of memcpy_fromio() for 16bit bus. In-tree
implementations seem to me that most, if not all, arch have either
readb() or memcpy() based mempy_fromio.
powerpc doesn't currently have readb() based. I assume that means all
ppc boards are 32bit clean.
if I'd like merge this readb() based or optimized for 16bit bus
version, where should I put it? obviously I have to add ifdef in
include/asm-ppc/io.h, but should I do either:
- add extern in io.h and body under platform/..../xxxx.c
- add extern in io.h and body under arch/ppc/lib/io.c
- add static inline version in io.h
- add static inline version in platform/..../xxxxx.h which is
included from asm-ppc/io.h
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