86 lines
2.2 KiB
C++
86 lines
2.2 KiB
C++
#pragma once
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#include <BAN/UniqPtr.h>
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#include <kernel/Interruptable.h>
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#include <kernel/Memory/DMARegion.h>
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#include <kernel/Networking/NetworkInterface.h>
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#include <kernel/PCI.h>
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namespace Kernel
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{
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class RTL8169 final : public NetworkInterface, public Interruptable
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{
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public:
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static bool probe(PCI::Device&);
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static BAN::ErrorOr<BAN::RefPtr<RTL8169>> create(PCI::Device&);
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virtual BAN::MACAddress get_mac_address() const override { return m_mac_address; }
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virtual bool link_up() override { return m_link_up; }
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virtual int link_speed() override;
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virtual size_t payload_mtu() const override { return 0x1FF8 - sizeof(EthernetHeader); }
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virtual void handle_irq() override;
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protected:
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RTL8169(PCI::Device& pci_device)
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: NetworkInterface(Type::Ethernet)
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, m_pci_device(pci_device)
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{ }
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~RTL8169();
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BAN::ErrorOr<void> initialize();
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virtual BAN::ErrorOr<void> send_raw_bytes(BAN::Span<const BAN::ConstByteSpan> buffers) override;
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virtual bool can_read_impl() const override { return false; }
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virtual bool can_write_impl() const override { return false; }
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virtual bool has_error_impl() const override { return false; }
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virtual bool has_hungup_impl() const override { return false; }
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private:
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BAN::ErrorOr<void> reset();
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BAN::ErrorOr<void> initialize_rx();
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BAN::ErrorOr<void> initialize_tx();
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void enable_link();
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BAN::ErrorOr<void> enable_interrupt();
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void receive_thread();
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protected:
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PCI::Device& m_pci_device;
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BAN::UniqPtr<PCI::BarRegion> m_io_bar_region;
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private:
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static constexpr size_t m_rx_descriptor_count = 256;
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static constexpr size_t m_tx_descriptor_count = 256;
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BAN::UniqPtr<DMARegion> m_rx_buffer_region;
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BAN::UniqPtr<DMARegion> m_tx_buffer_region;
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BAN::UniqPtr<DMARegion> m_rx_descriptor_region;
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BAN::UniqPtr<DMARegion> m_tx_descriptor_region;
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BAN::Atomic<bool> m_rx_thread_should_die { false };
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BAN::Atomic<bool> m_rx_thread_is_dead { true };
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uint32_t m_rx_head { 0 };
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SpinLock m_rx_lock;
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ThreadBlocker m_rx_blocker;
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BAN::Atomic<uint32_t> m_tx_head { 0 };
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BAN::Atomic<uint32_t> m_tx_commit { 0 };
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SpinLock m_tx_lock;
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ThreadBlocker m_tx_blocker;
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BAN::MACAddress m_mac_address {};
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BAN::Atomic<bool> m_link_up { false };
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friend class BAN::RefPtr<RTL8169>;
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};
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}
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