Hi! > Add driver to control the NVMe slot LEDs on the Cray ClusterStor E1000. > The driver provides hotplug attention status callbacks for the 24 NVMe > slots on the E1000. This allows users to access the E1000's locate and > fault LEDs via the normal /sys/bus/pci/slots/<slot>/attention sysfs > entries. This driver uses IPMI to communicate with the E1000 controller > to toggle the LEDs. > > Signed-off-by: Tony Hutter <hutter2@xxxxxxxx> We have LED subsystem. > +++ b/Documentation/ABI/testing/sysfs-bus-pci > @@ -231,6 +231,27 @@ Description: > - scXX contains the device subclass; > - iXX contains the device class programming interface. > > +What: /sys/bus/pci/slots/.../attention > +Date: February 2025 > +Contact: linux-pci@xxxxxxxxxxxxxxx > +Description: > + The attention attribute is used to read or write the attention > + status for an enclosure slot. This is often used to set the > + slot LED value on a NVMe storage enclosure. > + > + Common values: > + 0 = OFF > + 1 = ON > + 2 = blink (ampere, ibmphp, pciehp, rpaphp, shpchp) > + > + Using the pciehp_craye1k extensions: > + 0 = fault LED OFF, locate LED OFF > + 1 = fault LED ON, locate LED OFF > + 2 = fault LED OFF, locate LED ON > + 3 = fault LED ON, locate LED ON > + > + Other values are no-op, OFF, or ON depending on the driver. > + And this should use it. Best regards, Pavel -- I don't work for Nazis and criminals, and neither should you. Boycott Putin, Trump, and Musk!
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