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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/OwnPtr.h>
#include <Kernel/Bus/PCI/Access.h>
#include <Kernel/Bus/PCI/Device.h>
#include <Kernel/IO.h>
#include <Kernel/Interrupts/IRQHandler.h>
#include <Kernel/Net/NetworkAdapter.h>
#include <Kernel/Random.h>
namespace Kernel {
class E1000NetworkAdapter : public NetworkAdapter
, public PCI::Device
, public IRQHandler {
public:
static RefPtr<E1000NetworkAdapter> try_to_initialize(PCI::DeviceIdentifier const&);
virtual bool initialize();
virtual ~E1000NetworkAdapter() override;
virtual void send_raw(ReadonlyBytes) override;
virtual bool link_up() override;
virtual i32 link_speed() override;
virtual bool link_full_duplex() override;
virtual StringView purpose() const override { return class_name(); }
protected:
void setup_interrupts();
void setup_link();
E1000NetworkAdapter(PCI::Address, u8 irq);
virtual bool handle_irq(const RegisterState&) override;
virtual StringView class_name() const override { return "E1000NetworkAdapter"sv; }
struct [[gnu::packed]] e1000_rx_desc {
volatile uint64_t addr { 0 };
volatile uint16_t length { 0 };
volatile uint16_t checksum { 0 };
volatile uint8_t status { 0 };
volatile uint8_t errors { 0 };
volatile uint16_t special { 0 };
};
struct [[gnu::packed]] e1000_tx_desc {
volatile uint64_t addr { 0 };
volatile uint16_t length { 0 };
volatile uint8_t cso { 0 };
volatile uint8_t cmd { 0 };
volatile uint8_t status { 0 };
volatile uint8_t css { 0 };
volatile uint16_t special { 0 };
};
virtual void detect_eeprom();
virtual u32 read_eeprom(u8 address);
void read_mac_address();
void write_command(u16 address, u32);
u32 read_command(u16 address);
void initialize_rx_descriptors();
void initialize_tx_descriptors();
void out8(u16 address, u8);
void out16(u16 address, u16);
void out32(u16 address, u32);
u8 in8(u16 address);
u16 in16(u16 address);
u32 in32(u16 address);
void receive();
static constexpr size_t number_of_rx_descriptors = 32;
static constexpr size_t number_of_tx_descriptors = 8;
IOAddress m_io_base;
VirtualAddress m_mmio_base;
OwnPtr<Memory::Region> m_rx_descriptors_region;
OwnPtr<Memory::Region> m_tx_descriptors_region;
OwnPtr<Memory::Region> m_rx_buffer_region;
OwnPtr<Memory::Region> m_tx_buffer_region;
Array<void*, number_of_rx_descriptors> m_rx_buffers;
Array<void*, number_of_tx_descriptors> m_tx_buffers;
OwnPtr<Memory::Region> m_mmio_region;
u8 m_interrupt_line { 0 };
bool m_has_eeprom { false };
bool m_use_mmio { false };
EntropySource m_entropy_source;
WaitQueue m_wait_queue;
};
}
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