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2770433d30
Another step of incremental progress of removing `AK::String` from the kernel, to harden against OOM.
64 lines
1.7 KiB
C++
64 lines
1.7 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/OwnPtr.h>
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#include <Kernel/Arch/x86/IO.h>
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#include <Kernel/Bus/PCI/Access.h>
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#include <Kernel/Bus/PCI/Device.h>
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#include <Kernel/Interrupts/IRQHandler.h>
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#include <Kernel/Net/NetworkAdapter.h>
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#include <Kernel/Random.h>
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namespace Kernel {
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#define RTL8139_TX_BUFFER_COUNT 4
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class RTL8139NetworkAdapter final : public NetworkAdapter
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, public PCI::Device
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, public IRQHandler {
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public:
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static RefPtr<RTL8139NetworkAdapter> try_to_initialize(PCI::DeviceIdentifier const&, NonnullOwnPtr<KString>);
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virtual ~RTL8139NetworkAdapter() override;
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virtual void send_raw(ReadonlyBytes) override;
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virtual bool link_up() override { return m_link_up; }
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virtual i32 link_speed() override;
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virtual bool link_full_duplex() override;
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virtual StringView purpose() const override { return class_name(); }
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private:
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RTL8139NetworkAdapter(PCI::Address, u8 irq, NonnullOwnPtr<KString>);
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virtual bool handle_irq(const RegisterState&) override;
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virtual StringView class_name() const override { return "RTL8139NetworkAdapter"sv; }
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void reset();
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void read_mac_address();
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void receive();
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void out8(u16 address, u8 data);
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void out16(u16 address, u16 data);
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void out32(u16 address, u32 data);
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u8 in8(u16 address);
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u16 in16(u16 address);
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u32 in32(u16 address);
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IOAddress m_io_base;
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u8 m_interrupt_line { 0 };
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OwnPtr<Memory::Region> m_rx_buffer;
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u16 m_rx_buffer_offset { 0 };
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Vector<OwnPtr<Memory::Region>> m_tx_buffers;
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u8 m_tx_next_buffer { 0 };
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OwnPtr<Memory::Region> m_packet_buffer;
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bool m_link_up { false };
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EntropySource m_entropy_source;
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};
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}
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