Hi Kim,
Yes, i checked to my knowledge that i am doing all these steps and also
checked the
bit positions.

I will send you the code excerpts. The code was written for 2.4 kernel and
8555E(downloaded from freescale)  and i ported it to  8248/kernel 2.6.

thanks for your help
-vikas

On Sun, 31 Jul 2005 20:48:16 -0400 (EDT)
"Vikas Aggarwal" [off-list ref] wrote:

quoted

Tried it as u said . No luck :(
But something more i noted now in CPSR(channel pointer status
register=0x2040)  that before ISR invoked it has 0x0:0x7.

After ISR invoked it has 0x7:0x2007 .  The 7 in low bits means
channel_error and 2 is at "reserved" bits as per documentation, don't
know
what that means.

I also tried kmalloc with GFP_DMA, for the memory where i create the
Descriptor.
Please keep giving ideas for debugging this as this is what driving me
right now.
regards
-vikas

So you reset the master, then the channel, allocate the RNG descriptor,
allocate the random data buffer, fill the descriptor with values for an
RNG request the size of your buffer (filling with the physical address of
your random data buffer), and submit the descriptor's physical address to
the FR..

btw, I'm finding it hard to help without seeing sec register transaction
data, descriptor data, virtual and physical addresses, etc.

Kim