text: /*
   * Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
   *
   * SPDX-License-Identifier: BSD-2-Clause
   */
  
  #pragma once
  
  #include <AK/OwnPtr.h>
  #include <AK/RefPtr.h>
  #include <Kernel/Bus/PCI/Access.h>
  #include <Kernel/Bus/PCI/DeviceController.h>
  #include <Kernel/Devices/Device.h>
  #include <Kernel/IO.h>
  #include <Kernel/Lock.h>
  #include <Kernel/PhysicalAddress.h>
  #include <Kernel/Random.h>
  #include <Kernel/VM/PhysicalPage.h>
  #include <Kernel/WaitQueue.h>
  
  namespace Kernel {
  
  class AsyncBlockDeviceRequest;
  class StorageDevice;
  class StorageController : public RefCounted<StorageController> {
      AK_MAKE_ETERNAL
  
  public:
      virtual ~StorageController() = default;
  
      virtual RefPtr<StorageDevice> device(u32 index) const = 0;
      virtual size_t devices_count() const = 0;
  
  protected:
      virtual void start_request(const StorageDevice&, AsyncBlockDeviceRequest&) = 0;
  
  protected:
      virtual bool reset() = 0;
      virtual bool shutdown() = 0;
  
      virtual void complete_current_request(AsyncDeviceRequest::RequestResult) = 0;
  };
  }
  