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https://github.com/RGBCube/serenity
synced 2025-07-24 17:17:42 +00:00
Kernel/USB: Start fleshing out a basic UHCI controller driver :^)
Let's see if we can talk to some USB devices. We will now detect a UHCI controller if present on the PCI bus.
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5 changed files with 149 additions and 0 deletions
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@ -33,6 +33,7 @@ set(KERNEL_SOURCES
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Devices/RandomDevice.cpp
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Devices/RandomDevice.cpp
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Devices/SB16.cpp
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Devices/SB16.cpp
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Devices/SerialDevice.cpp
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Devices/SerialDevice.cpp
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Devices/UHCIController.cpp
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Devices/VMWareBackdoor.cpp
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Devices/VMWareBackdoor.cpp
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Devices/ZeroDevice.cpp
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Devices/ZeroDevice.cpp
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DoubleBuffer.cpp
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DoubleBuffer.cpp
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77
Kernel/Devices/UHCIController.cpp
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77
Kernel/Devices/UHCIController.cpp
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@ -0,0 +1,77 @@
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/*
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* Copyright (c) 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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#include <Kernel/Devices/UHCIController.h>
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namespace Kernel {
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static constexpr u16 UHCI_HOST_CONTROLLER_RESET = 0x0002;
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void UHCIController::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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if (PCI::get_class(address) == 0xc && PCI::get_subclass(address) == 0x03 && PCI::get_programming_interface(address) == 0) {
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new UHCIController(address, id);
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}
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});
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}
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UHCIController::UHCIController(PCI::Address address, PCI::ID id)
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: PCI::Device(address)
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, m_io_base(PCI::get_BAR4(pci_address()) & ~1)
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{
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klog() << "UHCI: Controller found " << id << " @ " << address;
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klog() << "UHCI: I/O base " << m_io_base;
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klog() << "UHCI: Interrupt line: " << PCI::get_interrupt_line(pci_address());
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reset();
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}
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UHCIController::~UHCIController()
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{
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}
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void UHCIController::reset()
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{
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write_usbcmd(UHCI_HOST_CONTROLLER_RESET);
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for (;;) {
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if (read_usbcmd() & UHCI_HOST_CONTROLLER_RESET)
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continue;
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break;
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}
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klog() << "UHCI: Reset completed!";
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}
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void UHCIController::handle_irq(const RegisterState&)
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{
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}
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}
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66
Kernel/Devices/UHCIController.h
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66
Kernel/Devices/UHCIController.h
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@ -0,0 +1,66 @@
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/*
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* Copyright (c) 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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#include <Kernel/IO.h>
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#include <Kernel/PCI/Device.h>
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namespace Kernel {
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class UHCIController final : public PCI::Device {
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public:
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static void detect();
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virtual ~UHCIController() override;
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void reset();
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private:
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UHCIController(PCI::Address, PCI::ID);
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u16 read_usbcmd() { return m_io_base.offset(0).in<u16>(); }
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u16 read_usbsts() { return m_io_base.offset(0x2).in<u16>(); }
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u16 read_usbintr() { return m_io_base.offset(0x4).in<u16>(); }
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u16 read_frnum() { return m_io_base.offset(0x6).in<u16>(); }
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u32 read_flbaseadd() { return m_io_base.offset(0x8).in<u32>(); }
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u8 read_sofmod() { return m_io_base.offset(0xc).in<u8>(); }
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u16 read_portsc1() { return m_io_base.offset(0x10).in<u16>(); }
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u16 read_portsc2() { return m_io_base.offset(0x12).in<u16>(); }
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void write_usbcmd(u16 value) { m_io_base.offset(0).out(value); }
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void write_usbsts(u16 value) { m_io_base.offset(0x2).out(value); }
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void write_usbintr(u16 value) { m_io_base.offset(0x4).out(value); }
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void write_frnum(u16 value) { m_io_base.offset(0x6).out(value); }
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void write_flbaseadd(u32 value) { m_io_base.offset(0x8).out(value); }
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void write_sofmod(u8 value) { m_io_base.offset(0xc).out(value); }
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void write_portsc1(u16 value) { m_io_base.offset(0x10).out(value); }
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void write_portsc2(u16 value) { m_io_base.offset(0x12).out(value); }
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virtual void handle_irq(const RegisterState&) override;
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PCI::Address m_address;
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IOAddress m_io_base;
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};
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}
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@ -46,6 +46,7 @@
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#include <Kernel/Devices/RandomDevice.h>
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#include <Kernel/Devices/RandomDevice.h>
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#include <Kernel/Devices/SB16.h>
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#include <Kernel/Devices/SB16.h>
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#include <Kernel/Devices/SerialDevice.h>
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#include <Kernel/Devices/SerialDevice.h>
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#include <Kernel/Devices/UHCIController.h>
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#include <Kernel/Devices/VMWareBackdoor.h>
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#include <Kernel/Devices/VMWareBackdoor.h>
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#include <Kernel/Devices/ZeroDevice.h>
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#include <Kernel/Devices/ZeroDevice.h>
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#include <Kernel/FileSystem/Ext2FileSystem.h>
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#include <Kernel/FileSystem/Ext2FileSystem.h>
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@ -246,6 +247,8 @@ void init_stage2()
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}
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}
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}
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}
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UHCIController::detect();
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E1000NetworkAdapter::detect();
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E1000NetworkAdapter::detect();
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RTL8139NetworkAdapter::detect();
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RTL8139NetworkAdapter::detect();
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@ -39,6 +39,7 @@ $SERENITY_EXTRA_QEMU_ARGS
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-device VGA,vgamem_mb=64
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-device VGA,vgamem_mb=64
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-drive file=${SERENITY_DISK_IMAGE},format=raw,index=0,media=disk
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-drive file=${SERENITY_DISK_IMAGE},format=raw,index=0,media=disk
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-device ich9-ahci
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-device ich9-ahci
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-usb
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-debugcon stdio
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-debugcon stdio
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-soundhw pcspk
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-soundhw pcspk
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-soundhw sb16
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-soundhw sb16
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-device piix3-ide
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-device piix3-ide
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-drive file=${SERENITY_DISK_IMAGE},id=disk,if=none
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-drive file=${SERENITY_DISK_IMAGE},id=disk,if=none
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-device ide-hd,bus=ide.6,drive=disk,unit=0
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-device ide-hd,bus=ide.6,drive=disk,unit=0
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-usb
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-debugcon stdio
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-debugcon stdio
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-soundhw pcspk
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-soundhw pcspk
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-soundhw sb16
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-soundhw sb16
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