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83 lines
2.5 KiB
C++
83 lines
2.5 KiB
C++
/*
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* Copyright (c) 2021, Luke Wilde <lukew@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 <AK/Singleton.h>
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#include <Kernel/Bus/PCI/API.h>
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#include <Kernel/Bus/USB/UHCI/UHCIController.h>
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#include <Kernel/Bus/USB/USBManagement.h>
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#include <Kernel/CommandLine.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Bus/USB/BusDirectory.h>
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#include <Kernel/Sections.h>
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namespace Kernel::USB {
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static Singleton<USBManagement> s_the;
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READONLY_AFTER_INIT bool s_initialized_sys_fs_directory = false;
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UNMAP_AFTER_INIT USBManagement::USBManagement()
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{
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enumerate_controllers();
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}
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UNMAP_AFTER_INIT void USBManagement::enumerate_controllers()
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{
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if (kernel_command_line().disable_usb())
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return;
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MUST(PCI::enumerate([this](PCI::DeviceIdentifier const& device_identifier) {
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if (!(device_identifier.class_code().value() == 0xc && device_identifier.subclass_code().value() == 0x3))
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return;
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if (device_identifier.prog_if().value() == 0x0) {
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if (kernel_command_line().disable_uhci_controller())
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return;
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if (auto uhci_controller_or_error = UHCIController::try_to_initialize(device_identifier); !uhci_controller_or_error.is_error())
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m_controllers.append(uhci_controller_or_error.release_value());
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return;
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}
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if (device_identifier.prog_if().value() == 0x10) {
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dmesgln("USBManagement: OHCI controller found at {} is not currently supported.", device_identifier.address());
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return;
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}
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if (device_identifier.prog_if().value() == 0x20) {
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dmesgln("USBManagement: EHCI controller found at {} is not currently supported.", device_identifier.address());
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return;
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}
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if (device_identifier.prog_if().value() == 0x30) {
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dmesgln("USBManagement: xHCI controller found at {} is not currently supported.", device_identifier.address());
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return;
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}
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dmesgln("USBManagement: Unknown/unsupported controller at {} with programming interface 0x{:02x}", device_identifier.address(), device_identifier.prog_if().value());
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}));
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}
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bool USBManagement::initialized()
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{
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return s_the.is_initialized();
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}
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UNMAP_AFTER_INIT void USBManagement::initialize()
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{
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if (!s_initialized_sys_fs_directory) {
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SysFSUSBBusDirectory::initialize();
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s_initialized_sys_fs_directory = true;
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}
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s_the.ensure_instance();
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}
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USBManagement& USBManagement::the()
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{
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return *s_the;
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}
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}
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