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<div class="moz-cite-prefix">On 9/5/22 04:11, Paul Fertser wrote:<br>
</div>
<blockquote type="cite" cite="mid:YxXZeFQhJWDSHSVf@home.paul.comp">
<pre class="moz-quote-pre" wrap="">Hi,
An OCP Tioga Pass platform features up to 4 drive bays for SATA
storage accessible from the front and fully hot-pluggable. The
backplane is usually connected directly to Intel C620 PCH (aka
Lewisburg).
It would be nice to have information about the currently attached
devices (model and serial number) available in BMC inventory but what
are the ways to get this information?</pre>
</blockquote>
<p>Intel systems only get drive mdl/sn from NVMe devices that
provide that information via MCTP over SMBus. SAS/SATA drives, to
my current knowledge, don't supply this info in that mode.<br>
</p>
<p>The insertion/removal events are also managed from the BMC via
I2C to a FPGA solution residing on the Hot Swap Backplane. The
FPGA provides registers that allow the BMC to query the
PRSTn/IFDETn pins.<br>
</p>
<blockquote type="cite" cite="mid:YxXZeFQhJWDSHSVf@home.paul.comp">
<pre class="moz-quote-pre" wrap="">
Is it possible there's some additional module in the all-mighty ME
that can supply BMC with the current state of PCH SATA controller? Or
is there some other sensible mechanism other than talking to UEFI on
startup (which would mean BMC is showing stale and thus misleading
data till the next reboot)?
Even though the question is quite specific we'd appreciate any related
insights on the topic; there must be some side-channels to RAID
controllers and such for BMC to be obtaining essential information but
so far I wasn't able to find any documentation about this.
</pre>
</blockquote>
RAID solutions are outside of scope for the Intel BMC.<br>
<pre class="moz-quote-pre" wrap="">
</pre>
<div class="moz-signature">-- <br>
<title></title>
<font color="#1F497D"><font face="Century Gothic">Johnathan Mantey<br>
<small>Senior Software Engineer</small><br>
<big><font color="#555555"><small><b>azad te</b><b>chnology
partners</b></small><br>
<small><font color="#1F497D"><small>Contributing to
Technology Innovation since 1992</small></font><small><br>
<font color="#1F497D">Phone: (503) 712-6764<br>
Email: <a href="mailto:johnathanx.mantey@intel.com" class="moz-txt-link-freetext">johnathanx.mantey@intel.com</a></font></small><br>
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