text: // 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.
  
  #ifndef SRC_VIRTUALIZATION_BIN_VMM_CONTROLLER_VIRTIO_WL_H_
  #define SRC_VIRTUALIZATION_BIN_VMM_CONTROLLER_VIRTIO_WL_H_
  
  #include <fuchsia/sys/cpp/fidl.h>
  #include <lib/zx/vmar.h>
  #include <zircon/compiler.h>
  #include <zircon/types.h>
  
  #include <virtio/virtio_ids.h>
  #include <virtio/wl.h>
  
  #include "src/virtualization/bin/vmm/virtio_device.h"
  
  #define VIRTWL_QUEUE_COUNT 2
  
  // Virtio wayland device.
  class VirtioWl
      : public VirtioComponentDevice<VIRTIO_ID_WL, VIRTWL_QUEUE_COUNT, virtio_wl_config_t> {
   public:
    explicit VirtioWl(const PhysMem& phys_mem);
  
    zx_status_t Start(
        const zx::guest& guest, zx::vmar vmar,
        fidl::InterfaceHandle<fuchsia::virtualization::WaylandDispatcher> dispatch_handle,
        fidl::InterfaceHandle<fuchsia::sysmem::Allocator> sysmem_allocator,
        fidl::InterfaceHandle<fuchsia::ui::composition::Allocator> scenic_allocator,
        fuchsia::sys::Launcher* launcher, async_dispatcher_t* dispatcher);
    zx_status_t GetImporter(
        fidl::InterfaceRequest<fuchsia::virtualization::hardware::VirtioWaylandImporter> request);
  
   private:
    fuchsia::sys::ComponentControllerPtr controller_;
    // Use a sync pointer for consistency of virtual machine execution.
    fuchsia::virtualization::hardware::VirtioWaylandSyncPtr wayland_;
  
    zx_status_t ConfigureQueue(uint16_t queue, uint16_t size, zx_gpaddr_t desc, zx_gpaddr_t avail,
                               zx_gpaddr_t used);
    zx_status_t Ready(uint32_t negotiated_features);
  };
  
  #endif  // SRC_VIRTUALIZATION_BIN_VMM_CONTROLLER_VIRTIO_WL_H_
  