<div>Hi Johnathan,</div><div> </div><div>What do you think about implementing this feature using SMI?</div><div>Is it possible to raise SMI on drive plug/removal?</div><div> </div><div>Thank you!</div><div> </div><div>06.09.2022, 18:54, "Johnathan Mantey" <johnathanx.mantey@intel.com>:</div><blockquote><div>On 9/5/22 04:11, Paul Fertser wrote:</div><blockquote><pre>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.</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.</p><blockquote><pre>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.<pre> </pre><div>--<br /><font color="#1F497D" face="Century Gothic">Johnathan Mantey<br />Senior Software Engineer<br /></font><font color="#555555" face="Century Gothic"><strong>azad technology partners</strong><br /></font><font color="#1F497D" face="Century Gothic">Contributing to Technology Innovation since 1992</font><font color="#555555" face="Century Gothic"><br /></font><font color="#1F497D" face="Century Gothic">Phone: (503) 712-6764<br />Email: <a href="mailto:johnathanx.mantey@intel.com" rel="noopener noreferrer">johnathanx.mantey@intel.com</a></font><br /> </div></blockquote><div> </div><div> </div><div>-- </div><div>Best regards,</div><div>Konstantin Klubnichkin,</div><div>lead firmware engineer,</div><div>server hardware R&D group,</div><div>Yandex Moscow office.</div><div>tel: +7-903-510-33-33</div><div> </div>