Unable to read/write consistently to a device.
gopi krishna
mgopik at yahoo.com
Wed Feb 28 04:02:38 EST 2001
Hi..
We have custom board based on 860T running
linux2.2.14
We have a device 0xf0040000. This address has been
ioremapped.
(Hence directly using the physical address to access
the memory)
We tried to read the registers using:
in_be32(addr)
*address
in_be32(volatile unsigned *addr)
but, none of them are giving any consistent results.
With BDM, we are able to get correct and consistent
results.
Can there be any cache/coherency/any other issues of
linux which we are overlooking?
thanx in advance
gopi
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