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1c94b5e8eb
Instead of initializing network adapters in init.cpp, let's move that logic into a separate class to handle this. Also, it seems like a good idea to shift responsiblity on enumeration of network adapters after the boot process, so this singleton will take care of finding the appropriate network adapter when asked to with an IPv4 address or interface name. With this change being merged, we simplify the creation logic of NetworkAdapter derived classes, so we enumerate the PCI bus only once, searching for driver candidates when doing so, and we let each driver to test if it is resposible for the specified PCI device.
60 lines
1.5 KiB
C++
60 lines
1.5 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/IO.h>
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#include <Kernel/Net/NetworkAdapter.h>
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#include <Kernel/PCI/Access.h>
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#include <Kernel/PCI/Device.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:
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static RefPtr<RTL8139NetworkAdapter> try_to_initialize(PCI::Address);
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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 const char* purpose() const override { return class_name(); }
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private:
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RTL8139NetworkAdapter(PCI::Address, u8 irq);
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virtual void handle_irq(const RegisterState&) override;
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virtual const char* class_name() const override { return "RTL8139NetworkAdapter"; }
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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<Region> m_rx_buffer;
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u16 m_rx_buffer_offset { 0 };
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Vector<OwnPtr<Region>> m_tx_buffers;
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u8 m_tx_next_buffer { 0 };
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OwnPtr<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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