Serial RapidIO Maintaintance read causes lock up

Bounine, Alexandre Alexandre.Bounine at idt.com
Thu Oct 14 00:38:49 EST 2010


Bastiaan Nijkamp wrote:
 
>Has the driver ever been tested/used without a switch attached? Because when the host >(which has ID 0x0) enumerates the other board it also assigns ID 0x0 to the agent, it seems >that the agent should have been assigned 0x1 as ID.

How the host ID is set on your host board?
Normally rio_enum_host() should increment next_destid in your case. 

>Another thing is that the agent is now hanging on the discovery process.

Make sure that you have the MASTER bit is set in agent's GCCSR register (0xC_013C).
If your board uses HW config switches to set host/agent mode this bit will be 0 for agent.
For quick test you may keep both boards in the host mode - the current RIO implementation relies on "riohdid=" command line parameter instead of HOST bit.


Alex.
 
 


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