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
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
    
    
More information about the Linuxppc-dev
mailing list