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