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2718d7c74c
Also handle native and compatibility channel modes together, so if only one IDE channel was set to work on PCI native mode, we need to handle it separately, so the other channel continue to operate with the legacy IO ports and interrupt line.
75 lines
3 KiB
C++
75 lines
3 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 <AK/OwnPtr.h>
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#include <Kernel/Storage/IDEChannel.h>
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namespace Kernel {
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class AsyncBlockDeviceRequest;
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struct [[gnu::packed]] PhysicalRegionDescriptor {
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u32 offset;
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u16 size { 0 };
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u16 end_of_table { 0 };
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};
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class IDEController;
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class BMIDEChannel final : public IDEChannel {
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friend class IDEController;
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friend class PATADiskDevice;
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public:
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static NonnullRefPtr<BMIDEChannel> create(const IDEController&, IDEChannel::IOAddressGroup, IDEChannel::ChannelType type);
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static NonnullRefPtr<BMIDEChannel> create(const IDEController&, u8 irq, IDEChannel::IOAddressGroup, IDEChannel::ChannelType type);
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virtual ~BMIDEChannel() override {};
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virtual bool is_dma_enabled() const override { return true; };
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private:
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BMIDEChannel(const IDEController&, IDEChannel::IOAddressGroup, IDEChannel::ChannelType type);
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BMIDEChannel(const IDEController&, u8 irq, IDEChannel::IOAddressGroup, IDEChannel::ChannelType type);
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void initialize();
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void complete_current_request(AsyncDeviceRequest::RequestResult);
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//^ IRQHandler
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virtual void handle_irq(const RegisterState&) override;
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//* IDEChannel
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virtual void send_ata_io_command(LBAMode lba_mode, Direction direction) const;
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virtual void ata_read_sectors(bool, u16);
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virtual void ata_write_sectors(bool, u16);
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PhysicalRegionDescriptor& prdt() { return *reinterpret_cast<PhysicalRegionDescriptor*>(m_prdt_region->vaddr().as_ptr()); }
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OwnPtr<Region> m_prdt_region;
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OwnPtr<Region> m_dma_buffer_region;
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RefPtr<PhysicalPage> m_prdt_page;
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RefPtr<PhysicalPage> m_dma_buffer_page;
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};
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}
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