Hi Joe,
I don't think you can do 64 bit transfer at once because ppc405 is a 32-bit CPU. So we have to the transfer in twice.
 
BR
Ming

Date: Thu, 1 Nov 2007 14:18:07 -0400
From: mead@bnl.gov
To: linuxppc-embedded@ozlabs.org
Subject:

I am using a Xilinx ML403 board and created a custom IP that connects to the PLB bus.   The PLB bus is 64 bits wide.   To communicate with the custom IP I have been using iowrite32() and ioread32() function calls to grab 32 bits at a time.  Is it possible to grab the full 64 bits in one transfer?   I don’t see an iowrite64() or ioread64() function…

 

Thanks,
Joe

 

 


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