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1682f0b760
SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
93 lines
2.5 KiB
C++
93 lines
2.5 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/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 final : public NetworkAdapter
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, public PCI::Device {
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public:
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static void detect();
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E1000NetworkAdapter(PCI::Address, u8 irq);
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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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private:
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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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void detect_eeprom();
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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 const size_t number_of_rx_descriptors = 32;
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static const 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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