serial.cc

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/*
 * Copyright (c) 2014, 2017 ARM Limited
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 *
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#include "dev/serial/serial.hh"
 
#include "base/logging.hh"
#include "params/SerialDevice.hh"
#include "params/SerialNullDevice.hh"
 
SerialDevice::SerialDevice(const SerialDeviceParams *p) : SimObject(p)
{
}
 
SerialDevice::~SerialDevice()
{
}
 
void
SerialDevice::regInterfaceCallback(const std::function<void()> &callback)
{
    // This can happen if the user has connected multiple UARTs to the
    // same terminal. In that case, each of them tries to register
    // callbacks.
    fatal_if(interfaceCallback,
             "A UART has already been associated with this device.");
    interfaceCallback = callback;
}
 
void
SerialDevice::notifyInterface()
{
    assert(dataAvailable());
    // Registering a callback is optional.
    if (interfaceCallback)
        interfaceCallback();
}
 
 
 
 
SerialNullDevice::SerialNullDevice(const SerialNullDeviceParams *p)
    : SerialDevice(p)
{
}
 
uint8_t
SerialNullDevice::readData()
{
    panic("SerialNullDevice does not have pending data.\n");
}
 
 
 
SerialNullDevice *
SerialNullDeviceParams::create()
{
    return new SerialNullDevice(this);
}