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The hierarchy is AHCIController, AHCIPortHandler, AHCIPort and SATADiskDevice. Each AHCIController has at least one AHCIPortHandler. An AHCIPortHandler is an interrupt handler that takes care of enumeration of handled AHCI ports when an interrupt occurs. Each AHCIPort takes care of one SATADiskDevice, and later on we can add support for Port multiplier. When we implement support of Message signalled interrupts, we can spawn many AHCIPortHandlers, and allow each one of them to be responsible for a set of AHCIPorts.
65 lines
2.4 KiB
C++
65 lines
2.4 KiB
C++
/*
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* Copyright (c) 2021, 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 <Kernel/Interrupts/IRQHandler.h>
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#include <Kernel/Lock.h>
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#include <Kernel/Storage/AHCIPort.h>
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#include <Kernel/Storage/StorageDevice.h>
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namespace Kernel {
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class AHCIController;
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class SATADiskDevice final : public StorageDevice {
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friend class AHCIController;
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public:
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enum class InterfaceType : u8 {
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SATA,
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SATAPI,
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};
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public:
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static NonnullRefPtr<SATADiskDevice> create(const AHCIController&, const AHCIPort&, size_t sector_size, size_t max_addressable_block);
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virtual ~SATADiskDevice() override;
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// ^StorageDevice
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virtual Type type() const override { return StorageDevice::Type::SATA; }
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// ^BlockDevice
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virtual void start_request(AsyncBlockDeviceRequest&) override;
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virtual String device_name() const override;
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private:
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SATADiskDevice(const AHCIController&, const AHCIPort&, size_t sector_size, size_t max_addressable_block);
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// ^DiskDevice
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virtual const char* class_name() const override;
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NonnullRefPtr<AHCIPort> m_port;
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};
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}
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