docs/driver_library_sequence.puml

@startuml

skinparam backgroundColor #FEFEFE

box "Application" #0091BD
participant "main()" as main
end box

box "Driver library" #00C1DE
participant "Device" as ddev
participant "Buffer" as dbuf
participant "Network" as dnet
participant "Inference" as dinf
end box

box "Kernel driver" #7D868C
participant "Device" as kdev
participant "Buffer" as kbuf
participant "Network" as knet
participant "Inference" as kinf
end box

note over ddev
    Create device
end note
activate main
main -> ddev++: Device()
    ddev -> kdev++: open(<device node>)
    return file descriptor
return

note over dnet
    Create network, parse network model
end note

main -> dnet++: Network(device, user_buffer, size)
    dnet -> knet++: ioctl(NETWORK_CREATE)
    return file descriptor

    dnet -> dnet: Parse network model
return

loop Allocate and fill IFM buffers
    main -> dbuf++: Buffer(device)
        dbuf -> kbuf++: ioctl(BUFFER_CREATE)
        return file descriptor
    return
end loop

loop Allocate OFM buffers
    main -> dbuf++: Buffer(device)
        dbuf -> kbuf++: ioctl(BUFFER_CREATE)
        return file descriptor
    return
end loop

note over dinf
    Create and run inference
end note
main -> dinf++: Inference(network, ifm, ofm)
    dinf -> kinf++: ioctl(INFERENCE_CREATE)
    return file descriptor
return

main -> dinf++: wait(file descriptor)
    dinf -> kinf++: poll(file descriptor)
    return
return

@enduml