83 lines
2.1 KiB
C++
83 lines
2.1 KiB
C++
#pragma once
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#include <BAN/UniqPtr.h>
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#include <kernel/InterruptController.h>
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#include <kernel/Memory/DMARegion.h>
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#include <kernel/Networking/E1000/Definitions.h>
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#include <kernel/Networking/NetworkInterface.h>
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#include <kernel/PCI.h>
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#define E1000_RX_DESCRIPTOR_COUNT 256
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#define E1000_TX_DESCRIPTOR_COUNT 256
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#define E1000_RX_BUFFER_SIZE 8192
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#define E1000_TX_BUFFER_SIZE 8192
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namespace Kernel
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{
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class E1000 : 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<E1000>> create(PCI::Device&);
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~E1000();
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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 { return E1000_RX_BUFFER_SIZE - sizeof(EthernetHeader); }
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virtual void handle_irq() final override;
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protected:
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E1000(PCI::Device& pci_device)
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: m_pci_device(pci_device)
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{ }
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BAN::ErrorOr<void> initialize();
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virtual void detect_eeprom();
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virtual uint32_t eeprom_read(uint8_t addr);
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uint32_t read32(uint16_t reg);
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void write32(uint16_t reg, uint32_t value);
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virtual BAN::ErrorOr<void> send_bytes(BAN::MACAddress destination, EtherType protocol, BAN::ConstByteSpan) 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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private:
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BAN::ErrorOr<void> read_mac_address();
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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 handle_receive();
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protected:
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PCI::Device& m_pci_device;
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BAN::UniqPtr<PCI::BarRegion> m_bar_region;
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bool m_has_eerprom { false };
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private:
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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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SpinLock m_lock;
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BAN::MACAddress m_mac_address {};
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bool m_link_up { false };
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friend class BAN::RefPtr<E1000>;
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};
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}
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