src/virtualization/bin/vmm/controller/virtio_console.cc

// Copyright 2018 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "src/virtualization/bin/vmm/controller/virtio_console.h"

#include <lib/sys/cpp/service_directory.h>

namespace {

constexpr auto kComponentName = "virtio_console";
constexpr auto kComponentCollectionName = "virtio_console_devices";
constexpr auto kComponentUrl = "#meta/virtio_console.cm";

}  // namespace

VirtioConsole::VirtioConsole(const PhysMem& phys_mem)
    : VirtioComponentDevice("Virtio Console", phys_mem, 0 /* device_features */,
                            fit::bind_member(this, &VirtioConsole::ConfigureQueue),
                            fit::bind_member(this, &VirtioConsole::Ready)) {
  config_.max_nr_ports = kVirtioConsoleMaxNumPorts;
}

zx_status_t VirtioConsole::Start(const zx::guest& guest, zx::socket socket,
                                 ::sys::ComponentContext* context, async_dispatcher_t* dispatcher) {
  zx_status_t status = CreateDynamicComponent(
      context, kComponentCollectionName, kComponentName, kComponentUrl,
      [console = console_.NewRequest()](std::shared_ptr<sys::ServiceDirectory> services) mutable {
        return services->Connect(std::move(console));
      });
  if (status != ZX_OK) {
    return status;
  }

  fuchsia::virtualization::hardware::StartInfo start_info;
  status = PrepStart(guest, dispatcher, &start_info);
  if (status != ZX_OK) {
    return status;
  }
  return console_->Start(std::move(start_info), std::move(socket));
}

zx_status_t VirtioConsole::ConfigureQueue(uint16_t queue, uint16_t size, zx_gpaddr_t desc,
                                          zx_gpaddr_t avail, zx_gpaddr_t used) {
  return console_->ConfigureQueue(queue, size, desc, avail, used);
}

zx_status_t VirtioConsole::Ready(uint32_t negotiated_features) {
  return console_->Ready(negotiated_features);
}