1602214dbSTomas WinklerWhat: /sys/class/mei/ 2602214dbSTomas WinklerDate: May 2014 3602214dbSTomas WinklerKernelVersion: 3.17 4602214dbSTomas WinklerContact: Tomas Winkler <tomas.winkler@intel.com> 5602214dbSTomas WinklerDescription: 6602214dbSTomas Winkler The mei/ class sub-directory belongs to mei device class 7602214dbSTomas Winkler 8602214dbSTomas Winkler 9602214dbSTomas WinklerWhat: /sys/class/mei/meiN/ 10602214dbSTomas WinklerDate: May 2014 11602214dbSTomas WinklerKernelVersion: 3.17 12602214dbSTomas WinklerContact: Tomas Winkler <tomas.winkler@intel.com> 13602214dbSTomas WinklerDescription: 14602214dbSTomas Winkler The /sys/class/mei/meiN directory is created for 15602214dbSTomas Winkler each probed mei device 16602214dbSTomas Winkler 177e4a90cbSTomas WinklerWhat: /sys/class/mei/meiN/fw_status 187e4a90cbSTomas WinklerDate: Nov 2014 197e4a90cbSTomas WinklerKernelVersion: 3.19 207e4a90cbSTomas WinklerContact: Tomas Winkler <tomas.winkler@intel.com> 217e4a90cbSTomas WinklerDescription: Display fw status registers content 227e4a90cbSTomas Winkler 237e4a90cbSTomas Winkler The ME FW writes its status information into fw status 247e4a90cbSTomas Winkler registers for BIOS and OS to monitor fw health. 257e4a90cbSTomas Winkler 267e4a90cbSTomas Winkler The register contains running state, power management 277e4a90cbSTomas Winkler state, error codes, and others. The way the registers 287e4a90cbSTomas Winkler are decoded depends on PCH or SoC generation. 297e4a90cbSTomas Winkler Also number of registers varies between 1 and 6 307e4a90cbSTomas Winkler depending on generation. 317e4a90cbSTomas Winkler 32*88d1beceSAlexander UsyskinWhat: /sys/class/mei/meiN/hbm_ver 33*88d1beceSAlexander UsyskinDate: Aug 2016 34*88d1beceSAlexander UsyskinKernelVersion: 4.9 35*88d1beceSAlexander UsyskinContact: Tomas Winkler <tomas.winkler@intel.com> 36*88d1beceSAlexander UsyskinDescription: Display the negotiated HBM protocol version. 37*88d1beceSAlexander Usyskin 38*88d1beceSAlexander Usyskin The HBM protocol version negotiated 39*88d1beceSAlexander Usyskin between the driver and the device. 40*88d1beceSAlexander Usyskin 41*88d1beceSAlexander UsyskinWhat: /sys/class/mei/meiN/hbm_ver_drv 42*88d1beceSAlexander UsyskinDate: Aug 2016 43*88d1beceSAlexander UsyskinKernelVersion: 4.9 44*88d1beceSAlexander UsyskinContact: Tomas Winkler <tomas.winkler@intel.com> 45*88d1beceSAlexander UsyskinDescription: Display the driver HBM protocol version. 46*88d1beceSAlexander Usyskin 47*88d1beceSAlexander Usyskin The HBM protocol version supported by the driver. 48