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- /'
- ' Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
- '
- ' SPDX-License-Identifier: BSD-3-Clause
- '/
- @startuml
- autonumber "<b>[#]</b>"
- participant "SDEI client" as EL2
- participant EL3
- participant "SDEI interrupt source" as SDEI
- activate EL2
- EL2->EL3: **SDEI_INTERRUPT_BIND**(irq)
- EL3->EL2: event number: ev
- EL2->EL3: **SDEI_EVENT_REGISTER**(ev, handler, ...)
- EL3->EL2: success
- EL2->EL3: **SDEI_EVENT_ENABLE**(ev)
- EL3->EL2: success
- EL2->EL3: **SDEI_PE_UNMASK**()
- EL3->EL2: 1
- ... <<Business as usual>> ...
- SDEI-->EL3: SDEI interrupt
- activate SDEI #salmon
- activate EL3 #red
- note over EL3: Prepare SDEI dispatch
- EL3->EL2: dispatch
- activate EL2 #salmon
- note over EL2: SDEI handler
- EL2->EL3: **SDEI_EVENT_COMPLETE()**
- deactivate EL2
- note over EL3: Complete SDEI dispatch
- EL3-->SDEI: EOI
- deactivate SDEI
- EL3->EL2: resumes preempted execution
- deactivate EL3
- ... <<Normal execution resumes>> ...
- @enduml
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