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112 lines
3.7 KiB
C++
112 lines
3.7 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/OwnPtr.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 <LibBareMetal/IO.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(const PCI::Address&);
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E1000NetworkAdapter(PCI::Address, u8 irq);
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virtual ~E1000NetworkAdapter() override;
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virtual void send_raw(const u8*, size_t) 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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{
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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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{
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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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Vector<OwnPtr<Region>> m_rx_buffers_regions;
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Vector<OwnPtr<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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static const int number_of_rx_descriptors = 32;
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static const int 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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