jhb e608775202 Add locking to mcd(4) and mark MPSAFE. ... - Actually use existing per-softc mutex. - Use mutex in cdev routines and remove D_NEEDGIANT. - Use callout(9) instead of timeout(9). - Don't check for impossible conditions (e.g. MCDINIT being clear). - Remove critical_enter/exit when sending a PIO command. - Use bus_*() instead of bus_space_*(). Tested by: no one		2014-11-18 21:51:01 +00:00
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mcd_isa.c
mcd.c
mcdreg.h
mcdvar.h