text: // This file is a part of the IncludeOS unikernel - www.includeos.org
  //
  // Copyright 2015 Oslo and Akershus University College of Applied Sciences
  // and Alfred Bratterud
  //
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  //
  //     http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  
  #ifndef KERNEL_PCI_MANAGER_HPP
  #define KERNEL_PCI_MANAGER_HPP
  
  #include <cstdint>
  #include <hw/nic.hpp>
  #include <hw/block_device.hpp>
  
  namespace hw {
    class PCI_Device;
  }
  
  class PCI_manager {
  public:
    // a <...> driver is constructed from a PCI device,
    //   and returns a unique_ptr to itself
    using NIC_driver = delegate< std::unique_ptr<hw::Nic> (hw::PCI_Device&) >;
    using Device_vector = std::vector<const hw::PCI_Device*>;
    static void register_nic(uint16_t, uint16_t, NIC_driver);
  
    using BLK_driver = delegate< std::unique_ptr<hw::Block_device> (hw::PCI_Device&) >;
    static void register_blk(uint16_t, uint16_t, BLK_driver);
  
    static void init(uint8_t classcode);
    static  Device_vector devices();
  
  private:
    static void scan_bus(uint8_t classcode, int bus);
  };
  
  #endif //< KERNEL_PCI_MANAGER_HPP
  