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https://github.com/RGBCube/serenity
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0a2b00a1bf
This new subsystem is somewhat replacing the IDE disk code we had with a new flexible design. StorageDevice is a generic class that represent a generic storage device. It is meant that specific storage hardware will override the interface. StorageController is a generic class that represent a storage controller that can be found in a machine. The IDEController class governs two IDEChannels. An IDEChannel is responsible to manage the master & slave devices of the channel, therefore an IDEChannel is an IRQHandler.
64 lines
2.3 KiB
C++
64 lines
2.3 KiB
C++
/*
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* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/OwnPtr.h>
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#include <AK/RefPtr.h>
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#include <Kernel/Devices/Device.h>
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#include <Kernel/IO.h>
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#include <Kernel/Lock.h>
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#include <Kernel/PCI/Access.h>
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#include <Kernel/PCI/DeviceController.h>
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#include <Kernel/PhysicalAddress.h>
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#include <Kernel/Random.h>
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#include <Kernel/VM/PhysicalPage.h>
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#include <Kernel/WaitQueue.h>
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namespace Kernel {
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class AsyncBlockDeviceRequest;
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class StorageDevice;
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class StorageController : public RefCounted<StorageController>
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, public PCI::DeviceController {
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AK_MAKE_ETERNAL
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public:
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protected:
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explicit StorageController(PCI::Address address)
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: PCI::DeviceController(address)
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{
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}
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virtual RefPtr<StorageDevice> device(u32 index) = 0;
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virtual void start_request(const StorageDevice&, AsyncBlockDeviceRequest&) = 0;
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protected:
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virtual bool reset() = 0;
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virtual bool shutdown() = 0;
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virtual void complete_current_request(AsyncDeviceRequest::RequestResult) = 0;
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};
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}
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