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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">This should work. We use similar approach to test our mport HW drivers.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Alex.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Linuxppc-dev [mailto:linuxppc-dev-bounces+alexandre.bounine=idt.com@lists.ozlabs.org]
<b>On Behalf Of </b>Saravanan S<br>
<b>Sent:</b> Friday, July 13, 2012 2:16 AM<br>
<b>To:</b> linuxppc-dev@lists.ozlabs.org<br>
<b>Subject:</b> Standalone SRIO Driver for Linux<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hi ,<br>
Iam currently working on the GE make DSP230 board consisting of Quad PowerPC8640 nodes interconnected by SRIO with Linux 2.6.34 . However the only way to access the SRIO is through rionet facility . Our requirement is to use the SRIO interconnect without
the Ethernet overheads. This would definitely enable higher speeds (though I cant find any throughput figures for SRIO in Linux on the net ??? ). My query is that whether any attempt has been made to develop a standalone driver and API to access the messaging
and doorbell services of SRIO . If no then request you to please provide inputs on the same. From my study I have the following thoughts for the driver :<br>
<br>
a) Have a character device interface for user .<br>
b) Basically use the rio support functions provided in rio.c like rio_add_inb_buffer , rio_add_outb_message to transfer and receive messages and add buffers .<br>
c) Maintain a dedicated ring of buffers in the driver and transfer data to and from the buffer to user space .<br>
<br>
<br>
Is this the right direction . Would really appreciate any inputs . thanks in advance.<br>
<br>
Regards,<br>
<br>
S.Saravanan<o:p></o:p></p>
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