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https://github.com/fergalmoran/ladybird.git
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0cede94c39
Instead of using a clunky if-statement paradigm, we now have all drivers being declaring two methods for their adapter class - create and probe. These methods are linked in each PCINetworkDriverInitializer structure, in a new s_initializers static list of them. Then, when we probe for a PCI device, we use each probe method and if there's a match, then the corresponding create method is called. After the adapter instance is created, we call the virtual initialize method on it, because many drivers actually require a sort of post-construction initialization sequence to ensure the network adapter can properly function. As a result of this change, it's much more easy to add more drivers and the initialization code is more readable and it's easier to understand when and where things could fail in the whole initialization sequence.
74 lines
2.0 KiB
C++
74 lines
2.0 KiB
C++
/*
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* Copyright (c) 2021, the SerenityOS developers.
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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/Bus/PCI/Access.h>
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#include <Kernel/Bus/PCI/Device.h>
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#include <Kernel/IOWindow.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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class NE2000NetworkAdapter 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 ErrorOr<bool> probe(PCI::DeviceIdentifier const&);
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static ErrorOr<NonnullLockRefPtr<NetworkAdapter>> create(PCI::DeviceIdentifier const&);
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virtual ErrorOr<void> initialize(Badge<NetworkingManagement>) override;
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virtual ~NE2000NetworkAdapter() override;
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virtual void send_raw(ReadonlyBytes) override;
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virtual bool link_up() override
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{
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// Pure NE2000 doesn't seem to have a link status indicator, so
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// just assume that it's up.
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return true;
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}
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virtual i32 link_speed() override
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{
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// Can only do 10mbit..
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return 10;
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}
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virtual bool link_full_duplex() override { return true; }
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virtual StringView purpose() const override { return class_name(); }
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virtual StringView device_name() const override { return class_name(); }
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private:
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NE2000NetworkAdapter(PCI::Address, u8, NonnullOwnPtr<IOWindow> registers_io_window, NonnullOwnPtr<KString>);
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virtual bool handle_irq(RegisterState const&) override;
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virtual StringView class_name() const override { return "NE2000NetworkAdapter"sv; }
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int ram_test();
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void reset();
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void rdma_read(size_t address, Bytes payload);
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void rdma_write(size_t address, ReadonlyBytes payload);
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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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u8 in8(u16 address);
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u16 in16(u16 address);
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NonnullOwnPtr<IOWindow> m_registers_io_window;
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int m_ring_read_ptr;
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u8 m_interrupt_line { 0 };
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MACAddress m_mac_address;
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EntropySource m_entropy_source;
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WaitQueue m_wait_queue;
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};
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}
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