mirror of
https://github.com/RGBCube/serenity
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79d3910145
On a second thought, theres nothing stopping us from allowing poeple to use both if they want to :^)
50 lines
1.4 KiB
C++
50 lines
1.4 KiB
C++
/*
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* Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/Devices/PCISerialDevice.h>
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namespace Kernel {
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static SerialDevice* s_the = nullptr;
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void PCISerialDevice::detect()
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{
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PCI::enumerate([&](const PCI::Address& address, PCI::ID id) {
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if (address.is_null())
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return;
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// HACK: There's currently no way to break out of PCI::enumerate, so we just early return if we already initialized the pci serial device
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if (is_available())
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return;
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for (auto& board_definition : board_definitions) {
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if (board_definition.device_id != id)
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continue;
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auto bar_base = PCI::get_BAR(address, board_definition.pci_bar) & ~1;
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// FIXME: We should support more than 1 PCI serial port (per card/multiple devices)
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s_the = new SerialDevice(IOAddress(bar_base + board_definition.first_offset), 68);
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if (board_definition.baud_rate != SerialDevice::Baud::Baud38400) // non-default baud
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s_the->set_baud(board_definition.baud_rate);
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dmesgln("PCISerialDevice: Found {} @ {}", board_definition.name, address);
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return;
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}
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});
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}
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SerialDevice& PCISerialDevice::the()
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{
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VERIFY(s_the);
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return *s_the;
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}
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bool PCISerialDevice::is_available()
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{
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return s_the;
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}
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}
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