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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/IOWindow.h>
#include <Kernel/Interrupts/IRQHandler.h>
#include <Kernel/Net/NetworkAdapter.h>
#include <Kernel/Random.h>
namespace Kernel {
#define RTL8139_TX_BUFFER_COUNT 4
class RTL8139NetworkAdapter final : public NetworkAdapter
, public PCI::Device
, public IRQHandler {
public:
static ErrorOr<LockRefPtr<RTL8139NetworkAdapter>> try_to_initialize(PCI::DeviceIdentifier const&);
virtual ~RTL8139NetworkAdapter() override;
virtual void send_raw(ReadonlyBytes) override;
virtual bool link_up() override { return m_link_up; }
virtual i32 link_speed() override;
virtual bool link_full_duplex() override;
virtual StringView purpose() const override { return class_name(); }
private:
RTL8139NetworkAdapter(PCI::Address, u8 irq, NonnullOwnPtr<IOWindow> registers_io_window, NonnullOwnPtr<KString>);
virtual bool handle_irq(RegisterState const&) override;
virtual StringView class_name() const override { return "RTL8139NetworkAdapter"sv; }
void reset();
void read_mac_address();
void receive();
void out8(u16 address, u8 data);
void out16(u16 address, u16 data);
void out32(u16 address, u32 data);
u8 in8(u16 address);
u16 in16(u16 address);
u32 in32(u16 address);
NonnullOwnPtr<IOWindow> m_registers_io_window;
u8 m_interrupt_line { 0 };
OwnPtr<Memory::Region> m_rx_buffer;
u16 m_rx_buffer_offset { 0 };
Vector<OwnPtr<Memory::Region>> m_tx_buffers;
u8 m_tx_next_buffer { 0 };
OwnPtr<Memory::Region> m_packet_buffer;
bool m_link_up { false };
EntropySource m_entropy_source;
};
}
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