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

// Copyright 2019 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_magma.h"

#include <lib/fit/function.h>
#include <lib/sys/cpp/service_directory.h>
#include <lib/syslog/cpp/macros.h>

static constexpr char kVirtioMagmaUrl[] =
    "fuchsia-pkg://fuchsia.com/virtio_magma#meta/virtio_magma.cmx";

VirtioMagma::VirtioMagma(const PhysMem& phys_mem)
    : VirtioComponentDevice(phys_mem, 0, fit::bind_member(this, &VirtioMagma::ConfigureQueue),
                            fit::bind_member(this, &VirtioMagma::Ready)) {}

zx_status_t VirtioMagma::Start(
    const zx::guest& guest, zx::vmar vmar,
    fidl::InterfaceHandle<fuchsia::virtualization::hardware::VirtioWaylandImporter>
        wayland_importer,
    fuchsia::sys::Launcher* launcher, async_dispatcher_t* dispatcher) {
  fuchsia::sys::LaunchInfo launch_info;
  launch_info.url = kVirtioMagmaUrl;
  auto services = sys::ServiceDirectory::CreateWithRequest(&launch_info.directory_request);
  launcher->CreateComponent(std::move(launch_info), controller_.NewRequest());
  services->Connect(magma_.NewRequest());
  fuchsia::virtualization::hardware::StartInfo start_info;
  zx_status_t status = PrepStart(guest, dispatcher, &start_info);
  if (status != ZX_OK) {
    return status;
  }
  zx_status_t start_status = ZX_ERR_INTERNAL;
  status = magma_->Start(std::move(start_info), std::move(vmar), std::move(wayland_importer),
                         &start_status);
  if (start_status != ZX_OK) {
    return start_status;
  }
  return status;
}

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

zx_status_t VirtioMagma::Ready(uint32_t negotiated_features) {
  return magma_->Ready(negotiated_features);
}