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2207e8d480
Add the core implementation for firmware and host client management within the ISSEI (Intel Silicon Security Engine Interface) subsystem support for a character device to expose the ISSEI HECI interface to user space. The firmware client (fw_client) and host client (host_client) modules are responsible for managing communication between the host software and the firmware. The character device provides a communication channel for user-space applications to interact with the firmware on the platform. The client modules enable the ISSEI driver to manage multiple host clients communicating with corresponding firmware clients, facilitating data transfers and control operations over the HECI interface. The character device allows user-space applications to establish connections to firmware clients using UUIDs, exchange messages, and control the communication flow using standard file operation calls. Reviewed-by: Karol Wachowski <karol.wachowski@linux.intel.com> Co-developed-by: Vitaly Lubart <lubvital@gmail.com> Signed-off-by: Vitaly Lubart <lubvital@gmail.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Link: https://patch.msgid.link/20260513-issei-for-upstream-v1-2-f590038678f9@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
74 lines
2.3 KiB
Plaintext
74 lines
2.3 KiB
Plaintext
What: /sys/class/issei/
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Date: June 2026
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KernelVersion: 7.2
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Contact: Alexander Usyskin <alexander.usyskin@intel.com>
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Description:
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The issei/ class sub-directory belongs to issei device class
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What: /sys/class/issei/issei<N>/
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Date: June 2026
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KernelVersion: 7.2
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Contact: Alexander Usyskin <alexander.usyskin@intel.com>
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Description:
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The /sys/class/issei/isseiN directory is created for
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each probed issei device
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What: /sys/class/issei/issei<N>/fw_ver
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Date: June 2026
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KernelVersion: 7.2
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Contact: Alexander Usyskin <alexander.usyskin@intel.com>
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Description: Display the ISSE firmware version.
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The version of the ISSE firmware is in format:
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<major>.<minor>.<milestone>.<build_no>.
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What: /sys/class/issei/issei<N>/fw_clients
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Date: June 2026
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KernelVersion: 7.2
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Contact: Alexander Usyskin <alexander.usyskin@intel.com>
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Description:
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The fw_clients directory stores all firmware clients on the
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probed issei device
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What: /sys/class/issei/issei<N>/fw_clients/<M>
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Date: June 2026
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KernelVersion: 7.2
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Contact: Alexander Usyskin <alexander.usyskin@intel.com>
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Description:
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The /sys/class/issei/isseiN/fw_client/M directory is created for
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each firmware client on the probed issei device where M is the
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id of firmware client.
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What: /sys/class/issei/issei<N>/fw_clients/<M>/id
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Date: June 2026
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KernelVersion: 7.2
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Contact: Alexander Usyskin <alexander.usyskin@intel.com>
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Description: Displays id of the firmware client
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The id of firmware client is it's number in client enumeration order,
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starting from 1.
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What: /sys/class/issei/issei<N>/fw_clients/<M>/uuid
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Date: June 2026
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KernelVersion: 7.2
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Contact: Alexander Usyskin <alexander.usyskin@intel.com>
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Description: Displays uuid of the firmware client
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The universally unique identifier of the firmware client
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What: /sys/class/issei/issei<N>/fw_clients/<M>/mtu
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Date: June 2026
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KernelVersion: 7.2
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Contact: Alexander Usyskin <alexander.usyskin@intel.com>
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Description: Displays maximum transmission unit of the firmware client
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The maximum transmission unit (in bytes) used by the firmware client.
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What: /sys/class/issei/issei<N>/fw_clients/<M>/ver
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Date: June 2026
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KernelVersion: 7.2
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Contact: Alexander Usyskin <alexander.usyskin@intel.com>
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Description: Displays version of the firmware client
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The version of the firmware client
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