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<TITLE>RE: [openib-general] [PATCH] mthca updates (2.6.8 dependent)</TITLE>
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<P><FONT SIZE=2>>-----Original Message-----</FONT>
<BR><FONT SIZE=2>>From: Dror Goldenberg [<A HREF="mailto:gdror@mellanox.co.il">mailto:gdror@mellanox.co.il</A>]</FONT>
<BR><FONT SIZE=2>>Sent: Sunday, August 15, 2004 10:17 PM</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>> -----Original Message-----</FONT>
<BR><FONT SIZE=2>>> From: Roland Dreier [<A HREF="mailto:roland@topspin.com">mailto:roland@topspin.com</A>] </FONT>
<BR><FONT SIZE=2>>> Sent: Saturday, August 14, 2004 7:37 PM </FONT>
<BR><FONT SIZE=2>>> </FONT>
<BR><FONT SIZE=2>>> </FONT>
<BR><FONT SIZE=2>>> I believe MSI-X requires HCA firmware that Mellanox has not</FONT>
<BR><FONT SIZE=2>>> yet released. MSI mode seems to work with current firmware </FONT>
<BR><FONT SIZE=2>>> (although I have seen some unexplained machine checks when using MSI). </FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>Current Tavor FW is supposed to fully support MSI-X and MSI. You just</FONT>
<BR><FONT SIZE=2>>choose... I think MSI-X is better :) </FONT>
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<P><FONT SIZE=2>Correction. I checked and it appears that there is a bug on MSI-X on </FONT>
<BR><FONT SIZE=2>currently released firmware. The bug will be fixed on FW 3.3.0. The bug is </FONT>
<BR><FONT SIZE=2>about endianess, so it's theoretically possible to workaround it, or just </FONT>
<BR><FONT SIZE=2>wait for the release. I'd wait for the release and get the driver developed </FONT>
<BR><FONT SIZE=2>much easily. Roland, what do you say?</FONT>
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