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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/NonnullOwnPtrVector.h>
#include <AK/OwnPtr.h>
#include <Kernel/IO.h>
#include <Kernel/Interrupts/IRQHandler.h>
#include <Kernel/Net/NetworkAdapter.h>
#include <Kernel/PCI/Access.h>
#include <Kernel/PCI/Device.h>
#include <Kernel/Random.h>
namespace Kernel {
class E1000NetworkAdapter final : public NetworkAdapter
, public PCI::Device {
public:
static void detect();
E1000NetworkAdapter(PCI::Address, u8 irq);
virtual ~E1000NetworkAdapter() override;
virtual void send_raw(ReadonlyBytes) override;
virtual bool link_up() override;
virtual const char* purpose() const override { return class_name(); }
private:
virtual void handle_irq(const RegisterState&) override;
virtual const char* class_name() const override { return "E1000NetworkAdapter"; }
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 };
};
void detect_eeprom();
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();
IOAddress m_io_base;
VirtualAddress m_mmio_base;
OwnPtr<Region> m_rx_descriptors_region;
OwnPtr<Region> m_tx_descriptors_region;
NonnullOwnPtrVector<Region> m_rx_buffers_regions;
NonnullOwnPtrVector<Region> m_tx_buffers_regions;
OwnPtr<Region> m_mmio_region;
u8 m_interrupt_line { 0 };
bool m_has_eeprom { false };
bool m_use_mmio { false };
EntropySource m_entropy_source;
static const size_t number_of_rx_descriptors = 32;
static const size_t number_of_tx_descriptors = 8;
WaitQueue m_wait_queue;
};
}
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