ioremap() just mask the first three bits then add the KSEG offset.
[ (address & 0x1fffffff) + KSEG ]
suppose my pci bridge provides two memory windows
physical 40000000 to 40ffffff and
physical 60000000 to 60ffffff
doesn't after iorremapping addresses in above two ranges
will point to same location after applying mathematics
of ioremap() ..how i will take care of this ..should i use only
one window at a time.
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