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c6480a0426
We call it E1000E, because the layout for these cards is somewhat not the same like E1000 supported cards. Also, this card supports advanced features that are not supported on 8254x cards.
97 lines
2.6 KiB
C++
97 lines
2.6 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/NonnullOwnPtrVector.h>
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#include <AK/OwnPtr.h>
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#include <Kernel/IO.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/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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class E1000NetworkAdapter : public NetworkAdapter
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, public PCI::Device {
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public:
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static RefPtr<E1000NetworkAdapter> try_to_initialize(PCI::Address);
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virtual bool initialize();
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virtual ~E1000NetworkAdapter() override;
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virtual void send_raw(ReadonlyBytes) override;
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virtual bool link_up() override;
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virtual const char* purpose() const override { return class_name(); }
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protected:
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void setup_interrupts();
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void setup_link();
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E1000NetworkAdapter(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 "E1000NetworkAdapter"; }
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struct [[gnu::packed]] e1000_rx_desc {
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volatile uint64_t addr { 0 };
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volatile uint16_t length { 0 };
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volatile uint16_t checksum { 0 };
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volatile uint8_t status { 0 };
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volatile uint8_t errors { 0 };
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volatile uint16_t special { 0 };
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};
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struct [[gnu::packed]] e1000_tx_desc {
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volatile uint64_t addr { 0 };
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volatile uint16_t length { 0 };
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volatile uint8_t cso { 0 };
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volatile uint8_t cmd { 0 };
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volatile uint8_t status { 0 };
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volatile uint8_t css { 0 };
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volatile uint16_t special { 0 };
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};
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virtual void detect_eeprom();
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virtual u32 read_eeprom(u8 address);
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void read_mac_address();
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void write_command(u16 address, u32);
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u32 read_command(u16 address);
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void initialize_rx_descriptors();
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void initialize_tx_descriptors();
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void out8(u16 address, u8);
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void out16(u16 address, u16);
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void out32(u16 address, u32);
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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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void receive();
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IOAddress m_io_base;
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VirtualAddress m_mmio_base;
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OwnPtr<Region> m_rx_descriptors_region;
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OwnPtr<Region> m_tx_descriptors_region;
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NonnullOwnPtrVector<Region> m_rx_buffers_regions;
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NonnullOwnPtrVector<Region> m_tx_buffers_regions;
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OwnPtr<Region> m_mmio_region;
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u8 m_interrupt_line { 0 };
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bool m_has_eeprom { false };
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bool m_use_mmio { false };
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EntropySource m_entropy_source;
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static constexpr size_t number_of_rx_descriptors = 32;
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static constexpr size_t number_of_tx_descriptors = 8;
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WaitQueue m_wait_queue;
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};
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}
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