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e5ffa960d7
The new PCI subsystem is initialized during runtime. PCI::Initializer is supposed to be called during early boot, to perform a few tests, and initialize the proper configuration space access mechanism. Kernel boot parameters can be specified by a user to determine what tests will occur, to aid debugging on problematic machines. After that, PCI::Initializer should be dismissed. PCI::IOAccess is a class that is derived from PCI::Access class and implements PCI configuration space access mechanism via x86 IO ports. PCI::MMIOAccess is a class that is derived from PCI::Access and implements PCI configurtaion space access mechanism via memory access. The new PCI subsystem also supports determination of IO/MMIO space needed by a device by checking a given BAR. In addition, Every device or component that use the PCI subsystem has changed to match the last changes.
47 lines
1.2 KiB
C++
47 lines
1.2 KiB
C++
#pragma once
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#include <AK/OwnPtr.h>
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#include <Kernel/IRQHandler.h>
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#include <Kernel/Net/NetworkAdapter.h>
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#include <Kernel/PCI/Access.h>
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#define RTL8139_TX_BUFFER_COUNT 4
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class RTL8139NetworkAdapter final : public NetworkAdapter
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, public IRQHandler {
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public:
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static OwnPtr<RTL8139NetworkAdapter> autodetect();
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RTL8139NetworkAdapter(PCI::Address, u8 irq);
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virtual ~RTL8139NetworkAdapter() override;
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virtual void send_raw(const u8*, int) override;
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virtual bool link_up() override { return m_link_up; }
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private:
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virtual void handle_irq() override;
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virtual const char* class_name() const override { return "RTL8139NetworkAdapter"; }
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void reset();
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void read_mac_address();
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void receive();
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void out8(u16 address, u8 data);
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void out16(u16 address, u16 data);
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void out32(u16 address, u32 data);
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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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PCI::Address m_pci_address;
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u16 m_io_base { 0 };
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u8 m_interrupt_line { 0 };
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u32 m_rx_buffer_addr { 0 };
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u16 m_rx_buffer_offset { 0 };
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u32 m_tx_buffer_addr[RTL8139_TX_BUFFER_COUNT];
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u8 m_tx_next_buffer { 0 };
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u32 m_packet_buffer { 0 };
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bool m_link_up { false };
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};
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