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<p>The IBM systems use an ibm-cffps device driver:</p>
<p><a class="moz-txt-link-freetext" href="https://github.com/openbmc/linux/blob/dev-5.4/drivers/hwmon/pmbus/ibm-cffps.c">https://github.com/openbmc/linux/blob/dev-5.4/drivers/hwmon/pmbus/ibm-cffps.c</a></p>
<p>There are some other power supply PMBus hwmon drivers, check the
parent directory.</p>
<p>There were some other non-standard or MFR SPECIFIC items that
were needed/desired, so those ended up being put in a
/sys/kernel/debug tree.</p>
<p>This device driver was introduced for the Witherspoon system, and
has had some updates since then.</p>
<p>The repository for looking at the STATUS_WORD and other PMBus
commands/registers was called witherspoon-pfault-analysis, renamed
to phosphor-power. I am not certain how that relates to the
psusensor daemon.</p>
<p><a class="moz-txt-link-freetext" href="https://github.com/openbmc/witherspoon-pfault-analysis">https://github.com/openbmc/witherspoon-pfault-analysis</a></p>
<p><a class="moz-txt-link-freetext" href="https://github.ibm.com/openbmc/phosphor-power">https://github.ibm.com/openbmc/phosphor-power</a></p>
<p><a class="moz-txt-link-freetext" href="https://github.com/openbmc/dbus-sensors/tree/master/src">https://github.com/openbmc/dbus-sensors/tree/master/src</a></p>
<p>The hwmon specific information that Witherspoon used for
telemetry data was updated via the phosphor-hwmon application:</p>
<p><a class="moz-txt-link-freetext" href="https://github.com/openbmc/phosphor-hwmon">https://github.com/openbmc/phosphor-hwmon</a></p>
<p><a class="moz-txt-link-freetext" href="https://github.com/openbmc/openbmc/tree/master/meta-ibm/meta-witherspoon/recipes-phosphor/sensors/phosphor-hwmon/witherspoon/obmc/hwmon/ahb/apb/bus%401e78a000/i2c-bus%40100">https://github.com/openbmc/openbmc/tree/master/meta-ibm/meta-witherspoon/recipes-phosphor/sensors/phosphor-hwmon/witherspoon/obmc/hwmon/ahb/apb/bus%401e78a000/i2c-bus%40100</a></p>
<p><a class="moz-txt-link-freetext" href="https://github.com/openbmc/openbmc/tree/master/meta-inspur/meta-fp5280g2/recipes-phosphor/sensors/phosphor-hwmon/obmc/hwmon/ahb/apb/bus%401e78a000/i2c-bus%40400">https://github.com/openbmc/openbmc/tree/master/meta-inspur/meta-fp5280g2/recipes-phosphor/sensors/phosphor-hwmon/obmc/hwmon/ahb/apb/bus%401e78a000/i2c-bus%40400</a><br>
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<div class="moz-cite-prefix">On 2020-04-17 18:29, Patrick Voelker
wrote:<br>
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<p class="MsoNormal"><span style="color:#1F497D">Thanks Vijay,
that was really helpful.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I’m
specifically looking for how the PMBus STATUS_WORD and
sub-registers are monitored and represented in OpenBMC but
it’s not jumping out at me.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><a name="_MailEndCompose"
moz-do-not-send="true"><span style="color:#1F497D"><o:p> </o:p></span></a></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"">
Vijay Khemka [<a class="moz-txt-link-freetext" href="mailto:vijaykhemka@fb.com">mailto:vijaykhemka@fb.com</a>]
<br>
<b>Sent:</b> Friday, April 17, 2020 11:07 AM<br>
<b>To:</b> Patrick Voelker; <a class="moz-txt-link-abbreviated" href="mailto:openbmc@lists.ozlabs.org">openbmc@lists.ozlabs.org</a><br>
<b>Subject:</b> Re: PSU (PMBus) fault monitoring /
logging<o:p></o:p></span></p>
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</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">There are psusensor daemon who monitors
these PSU sensors.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div style="border:none;border-top:solid #B5C4DF
1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span
style="font-size:12.0pt;color:black">From: </span></b><span
style="font-size:12.0pt;color:black">openbmc
<a class="moz-txt-link-rfc2396E" href="mailto:openbmc-bounces+vijaykhemka=fb.com@lists.ozlabs.org"><openbmc-bounces+vijaykhemka=fb.com@lists.ozlabs.org></a>
on behalf of Patrick Voelker
<a class="moz-txt-link-rfc2396E" href="mailto:Patrick_Voelker@phoenix.com"><Patrick_Voelker@phoenix.com></a><br>
<b>Date: </b>Thursday, April 16, 2020 at 7:40 PM<br>
<b>To: </b><a class="moz-txt-link-rfc2396E" href="mailto:openbmc@lists.ozlabs.org">"openbmc@lists.ozlabs.org"</a>
<a class="moz-txt-link-rfc2396E" href="mailto:openbmc@lists.ozlabs.org"><openbmc@lists.ozlabs.org></a><br>
<b>Subject: </b>PSU (PMBus) fault monitoring / logging<o:p></o:p></span></p>
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<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p class="MsoNormal">Is there a module that instantiates
sensors for PSU PMBus based faults after the entity-manager
probes the busses and finds the PSUs by FRU<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">I'm looking for the method by which the
faults are monitored and logged. I see that there’s kernel
hwmon support for PMBus but I’m trying to understand how
IPMI sensors and logging tie in.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
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