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2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/Documentation/driver-api/firmware/other_interfaces.rst
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@@ -13,3 +13,33 @@
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 .. kernel-doc:: drivers/firmware/edd.c
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    :internal:
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+Intel Stratix10 SoC Service Layer
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+---------------------------------
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+Some features of the Intel Stratix10 SoC require a level of privilege
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+higher than the kernel is granted. Such secure features include
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+FPGA programming. In terms of the ARMv8 architecture, the kernel runs
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+at Exception Level 1 (EL1), access to the features requires
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+Exception Level 3 (EL3).
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+
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+The Intel Stratix10 SoC service layer provides an in kernel API for
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+drivers to request access to the secure features. The requests are queued
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+and processed one by one. ARM’s SMCCC is used to pass the execution
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+of the requests on to a secure monitor (EL3).
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+
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+.. kernel-doc:: include/linux/firmware/intel/stratix10-svc-client.h
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+   :functions: stratix10_svc_command_code
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+
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+.. kernel-doc:: include/linux/firmware/intel/stratix10-svc-client.h
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+   :functions: stratix10_svc_client_msg
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+
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+.. kernel-doc:: include/linux/firmware/intel/stratix10-svc-client.h
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+   :functions: stratix10_svc_command_config_type
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+
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+.. kernel-doc:: include/linux/firmware/intel/stratix10-svc-client.h
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+   :functions: stratix10_svc_cb_data
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+
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+.. kernel-doc:: include/linux/firmware/intel/stratix10-svc-client.h
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+   :functions: stratix10_svc_client
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+
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+.. kernel-doc:: drivers/firmware/stratix10-svc.c
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+   :export: