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Kernel: Introduce the StorageManagement class

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The StorageManagement class has 2 roles:
1. During boot, it should find all storage controllers in the machine,
and then determine what is the boot device.
2. Later on boot, it is a registrar of all storage controllers and
storage devices. Thus, it could be used to show information about these
devices when implemented.

This change allows the user to specify a boot driver other than /dev/hda
and if it's connected in the machine - it will boot.
This commit is contained in:
Liav A 2020-12-19 15:25:06 +02:00 • committed by Andreas Kling
parent 78ae4b0530
commit 469f20d4ee
4 changed files with 182 additions and 16 deletions
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58
Kernel/Storage/StorageManagement.h Normal file
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/*
* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/NonnullRefPtr.h>
#include <AK/NonnullRefPtrVector.h>
#include <AK/Types.h>
#include <Kernel/Storage/StorageController.h>
#include <Kernel/Storage/StorageDevice.h>
namespace Kernel {
class StorageManagement {
AK_MAKE_ETERNAL;
public:
StorageManagement(String root_device, bool force_pio);
static bool initialized();
static void initialize(String root_device, bool force_pio);
static StorageManagement& the();
NonnullRefPtr<StorageDevice> boot_device() const;
NonnullRefPtrVector<StorageController> ide_controllers() const;
NonnullRefPtrVector<StorageDevice> storage_devices() const;
private:
NonnullRefPtrVector<StorageController> enumerate_controllers(bool force_pio) const;
NonnullRefPtr<StorageDevice> determine_boot_device(String root_device) const;
NonnullRefPtrVector<StorageController> m_controllers;
NonnullRefPtr<StorageDevice> m_boot_device;
};
}