| What: /sys/class/issei/ |
| Date: June 2026 |
| KernelVersion: 7.2 |
| Contact: Alexander Usyskin <alexander.usyskin@intel.com> |
| Description: |
| The issei/ class sub-directory belongs to issei device class |
| |
| What: /sys/class/issei/issei<N>/ |
| Date: June 2026 |
| KernelVersion: 7.2 |
| Contact: Alexander Usyskin <alexander.usyskin@intel.com> |
| Description: |
| The /sys/class/issei/isseiN directory is created for |
| each probed issei device |
| |
| What: /sys/class/issei/issei<N>/fw_ver |
| Date: June 2026 |
| KernelVersion: 7.2 |
| Contact: Alexander Usyskin <alexander.usyskin@intel.com> |
| Description: Display the ISSE firmware version. |
| |
| The version of the ISSE firmware is in format: |
| <major>.<minor>.<milestone>.<build_no>. |
| |
| What: /sys/class/issei/issei<N>/fw_clients |
| Date: June 2026 |
| KernelVersion: 7.2 |
| Contact: Alexander Usyskin <alexander.usyskin@intel.com> |
| Description: |
| The fw_clients directory stores all firmware clients on the |
| probed issei device |
| |
| What: /sys/class/issei/issei<N>/fw_clients/<M> |
| Date: June 2026 |
| KernelVersion: 7.2 |
| Contact: Alexander Usyskin <alexander.usyskin@intel.com> |
| Description: |
| The /sys/class/issei/isseiN/fw_client/M directory is created for |
| each firmware client on the probed issei device where M is the |
| id of firmware client. |
| |
| What: /sys/class/issei/issei<N>/fw_clients/<M>/id |
| Date: June 2026 |
| KernelVersion: 7.2 |
| Contact: Alexander Usyskin <alexander.usyskin@intel.com> |
| Description: Displays id of the firmware client |
| |
| The id of firmware client is it's number in client enumeration order, |
| starting from 1. |
| |
| What: /sys/class/issei/issei<N>/fw_clients/<M>/uuid |
| Date: June 2026 |
| KernelVersion: 7.2 |
| Contact: Alexander Usyskin <alexander.usyskin@intel.com> |
| Description: Displays uuid of the firmware client |
| |
| The universally unique identifier of the firmware client |
| |
| What: /sys/class/issei/issei<N>/fw_clients/<M>/mtu |
| Date: June 2026 |
| KernelVersion: 7.2 |
| Contact: Alexander Usyskin <alexander.usyskin@intel.com> |
| Description: Displays maximum transmission unit of the firmware client |
| |
| The maximum transmission unit (in bytes) used by the firmware client. |
| |
| What: /sys/class/issei/issei<N>/fw_clients/<M>/ver |
| Date: June 2026 |
| KernelVersion: 7.2 |
| Contact: Alexander Usyskin <alexander.usyskin@intel.com> |
| Description: Displays version of the firmware client |
| |
| The version of the firmware client |
