Kernel/HID: Add support for virtio input devices

Author: https://github.com/spholz
Commit: https://github.com/SerenityOS/serenity/commit/018a28cf4a
Pull-request: https://github.com/SerenityOS/serenity/pull/24254
Reviewed-by: https://github.com/ADKaster ✅
Reviewed-by: https://github.com/Hendiadyoin1

Kernel/Bus/PCI/IDs.h

@@ -26,6 +26,7 @@ enum DeviceID {
     VirtIOConsole = 0x1003,
     VirtIOEntropy = 0x1005,
     VirtIOGPU = 0x1050,
+    VirtIOInput = 0x1052,
 };
 
 }

Kernel/Bus/VirtIO/Transport/PCIe/Detect.cpp

@@ -11,6 +11,7 @@
 #include <Kernel/Bus/PCI/IDs.h>
 #include <Kernel/Bus/VirtIO/Device.h>
 #include <Kernel/Bus/VirtIO/Transport/PCIe/Detect.h>
+#include <Kernel/Devices/HID/VirtIO/Input.h>
 #include <Kernel/Devices/Serial/VirtIO/Console.h>
 #include <Kernel/Sections.h>
 #include <Kernel/Security/Random/VirtIO/RNG.h>
@@ -46,6 +47,11 @@ UNMAP_AFTER_INIT void detect_pci_instances()
             // This should have been initialized by the storage subsystem
             break;
         }
+        case PCI::DeviceID::VirtIOInput: {
+            auto& input = Input::must_create_for_pci_instance(device_identifier).leak_ref();
+            MUST(input.initialize_virtio_resources());
+            break;
+        }
         default:
             dbgln_if(VIRTIO_DEBUG, "VirtIO: Unknown VirtIO device with ID: {}", device_identifier.hardware_id().device_id);
             break;

Kernel/Bus/VirtIO/Transport/PCIe/TransportLink.cpp

@@ -31,6 +31,8 @@ StringView PCIeTransportLink::determine_device_class_name() const
             return "VirtIOConsole"sv;
         case 4:
             return "VirtIORNG"sv;
+        case 18:
+            return "VirtIOInput"sv;
         default:
             dbgln("VirtIO: Unknown subsystem_device_id {}", subsystem_device_id);
             VERIFY_NOT_REACHED();
@@ -50,8 +52,10 @@ StringView PCIeTransportLink::determine_device_class_name() const
         return "VirtIORNG"sv;
     case PCI::DeviceID::VirtIOGPU:
         return "VirtIOGPU"sv;
+    case PCI::DeviceID::VirtIOInput:
+        return "VirtIOInput"sv;
     default:
-        dbgln("VirtIO: Unknown device_id {}", id.vendor_id);
+        dbgln("VirtIO: Unknown device_id {:#x}", id.device_id);
         VERIFY_NOT_REACHED();
     }
 }

Kernel/CMakeLists.txt

@@ -73,6 +73,7 @@ set(KERNEL_SOURCES
     Devices/HID/PS2/KeyboardDevice.cpp
     Devices/HID/PS2/MouseDevice.cpp
     Devices/HID/USB/MouseDevice.cpp
+    Devices/HID/VirtIO/Input.cpp
     Devices/Generic/ConsoleDevice.cpp
     Devices/Generic/DeviceControlDevice.cpp
     Devices/Generic/FullDevice.cpp

Kernel/Devices/HID/VirtIO/EvDevDefinitions.h

@@ -0,0 +1,988 @@
+/*-
+ * Copyright (c) 2016 Oleksandr Tymoshenko <gonzo@FreeBSD.org>
+ * Copyright (c) 2015-2016 Vladimir Kondratyev <wulf@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef	_EVDEV_INPUT_EVENT_CODES_H
+#define	_EVDEV_INPUT_EVENT_CODES_H
+
+/*
+ * Device properties and quirks
+ */
+
+#define	INPUT_PROP_POINTER		0x00	/* needs a pointer */
+#define	INPUT_PROP_DIRECT		0x01	/* direct input devices */
+#define	INPUT_PROP_BUTTONPAD		0x02	/* has button(s) under pad */
+#define	INPUT_PROP_SEMI_MT		0x03	/* touch rectangle only */
+#define	INPUT_PROP_TOPBUTTONPAD		0x04	/* softbuttons at top of pad */
+#define	INPUT_PROP_POINTING_STICK	0x05	/* is a pointing stick */
+#define	INPUT_PROP_ACCELEROMETER	0x06	/* has accelerometer */
+
+#define	INPUT_PROP_MAX			0x1f
+#define	INPUT_PROP_CNT			(INPUT_PROP_MAX + 1)
+
+/*
+ * Event types
+ */
+
+#define	EV_SYN			0x00
+#define	EV_KEY			0x01
+#define	EV_REL			0x02
+#define	EV_ABS			0x03
+#define	EV_MSC			0x04
+#define	EV_SW			0x05
+#define	EV_LED			0x11
+#define	EV_SND			0x12
+#define	EV_REP			0x14
+#define	EV_FF			0x15
+#define	EV_PWR			0x16
+#define	EV_FF_STATUS		0x17
+#define	EV_MAX			0x1f
+#define	EV_CNT			(EV_MAX+1)
+
+/*
+ * Synchronization events.
+ */
+
+#define	SYN_REPORT		0
+#define	SYN_CONFIG		1
+#define	SYN_MT_REPORT		2
+#define	SYN_DROPPED		3
+#define	SYN_MAX			0xf
+#define	SYN_CNT			(SYN_MAX+1)
+
+/*
+ * Keys and buttons
+ *
+ * Most of the keys/buttons are modeled after USB HUT 1.12
+ * (see http://www.usb.org/developers/hidpage).
+ * Abbreviations in the comments:
+ * AC - Application Control
+ * AL - Application Launch Button
+ * SC - System Control
+ */
+
+#define	KEY_RESERVED		0
+#define	KEY_ESC			1
+#define	KEY_1			2
+#define	KEY_2			3
+#define	KEY_3			4
+#define	KEY_4			5
+#define	KEY_5			6
+#define	KEY_6			7
+#define	KEY_7			8
+#define	KEY_8			9
+#define	KEY_9			10
+#define	KEY_0			11
+#define	KEY_MINUS		12
+#define	KEY_EQUAL		13
+#define	KEY_BACKSPACE		14
+#define	KEY_TAB			15
+#define	KEY_Q			16
+#define	KEY_W			17
+#define	KEY_E			18
+#define	KEY_R			19
+#define	KEY_T			20
+#define	KEY_Y			21
+#define	KEY_U			22
+#define	KEY_I			23
+#define	KEY_O			24
+#define	KEY_P			25
+#define	KEY_LEFTBRACE		26
+#define	KEY_RIGHTBRACE		27
+#define	KEY_ENTER		28
+#define	KEY_LEFTCTRL		29
+#define	KEY_A			30
+#define	KEY_S			31
+#define	KEY_D			32
+#define	KEY_F			33
+#define	KEY_G			34
+#define	KEY_H			35
+#define	KEY_J			36
+#define	KEY_K			37
+#define	KEY_L			38
+#define	KEY_SEMICOLON		39
+#define	KEY_APOSTROPHE		40
+#define	KEY_GRAVE		41
+#define	KEY_LEFTSHIFT		42
+#define	KEY_BACKSLASH		43
+#define	KEY_Z			44
+#define	KEY_X			45
+#define	KEY_C			46
+#define	KEY_V			47
+#define	KEY_B			48
+#define	KEY_N			49
+#define	KEY_M			50
+#define	KEY_COMMA		51
+#define	KEY_DOT			52
+#define	KEY_SLASH		53
+#define	KEY_RIGHTSHIFT		54
+#define	KEY_KPASTERISK		55
+#define	KEY_LEFTALT		56
+#define	KEY_SPACE		57
+#define	KEY_CAPSLOCK		58
+#define	KEY_F1			59
+#define	KEY_F2			60
+#define	KEY_F3			61
+#define	KEY_F4			62
+#define	KEY_F5			63
+#define	KEY_F6			64
+#define	KEY_F7			65
+#define	KEY_F8			66
+#define	KEY_F9			67
+#define	KEY_F10			68
+#define	KEY_NUMLOCK		69
+#define	KEY_SCROLLLOCK		70
+#define	KEY_KP7			71
+#define	KEY_KP8			72
+#define	KEY_KP9			73
+#define	KEY_KPMINUS		74
+#define	KEY_KP4			75
+#define	KEY_KP5			76
+#define	KEY_KP6			77
+#define	KEY_KPPLUS		78
+#define	KEY_KP1			79
+#define	KEY_KP2			80
+#define	KEY_KP3			81
+#define	KEY_KP0			82
+#define	KEY_KPDOT		83
+
+#define	KEY_ZENKAKUHANKAKU	85
+#define	KEY_102ND		86
+#define	KEY_F11			87
+#define	KEY_F12			88
+#define	KEY_RO			89
+#define	KEY_KATAKANA		90
+#define	KEY_HIRAGANA		91
+#define	KEY_HENKAN		92
+#define	KEY_KATAKANAHIRAGANA	93
+#define	KEY_MUHENKAN		94
+#define	KEY_KPJPCOMMA		95
+#define	KEY_KPENTER		96
+#define	KEY_RIGHTCTRL		97
+#define	KEY_KPSLASH		98
+#define	KEY_SYSRQ		99
+#define	KEY_RIGHTALT		100
+#define	KEY_LINEFEED		101
+#define	KEY_HOME		102
+#define	KEY_UP			103
+#define	KEY_PAGEUP		104
+#define	KEY_LEFT		105
+#define	KEY_RIGHT		106
+#define	KEY_END			107
+#define	KEY_DOWN		108
+#define	KEY_PAGEDOWN		109
+#define	KEY_INSERT		110
+#define	KEY_DELETE		111
+#define	KEY_MACRO		112
+#define	KEY_MUTE		113
+#define	KEY_VOLUMEDOWN		114
+#define	KEY_VOLUMEUP		115
+#define	KEY_POWER		116	/* SC System Power Down */
+#define	KEY_KPEQUAL		117
+#define	KEY_KPPLUSMINUS		118
+#define	KEY_PAUSE		119
+#define	KEY_SCALE		120	/* AL Compiz Scale (Expose) */
+
+#define	KEY_KPCOMMA		121
+#define	KEY_HANGEUL		122
+#define	KEY_HANGUEL		KEY_HANGEUL
+#define	KEY_HANJA		123
+#define	KEY_YEN			124
+#define	KEY_LEFTMETA		125
+#define	KEY_RIGHTMETA		126
+#define	KEY_COMPOSE		127
+
+#define	KEY_STOP		128	/* AC Stop */
+#define	KEY_AGAIN		129
+#define	KEY_PROPS		130	/* AC Properties */
+#define	KEY_UNDO		131	/* AC Undo */
+#define	KEY_FRONT		132
+#define	KEY_COPY		133	/* AC Copy */
+#define	KEY_OPEN		134	/* AC Open */
+#define	KEY_PASTE		135	/* AC Paste */
+#define	KEY_FIND		136	/* AC Search */
+#define	KEY_CUT			137	/* AC Cut */
+#define	KEY_HELP		138	/* AL Integrated Help Center */
+#define	KEY_MENU		139	/* Menu (show menu) */
+#define	KEY_CALC		140	/* AL Calculator */
+#define	KEY_SETUP		141
+#define	KEY_SLEEP		142	/* SC System Sleep */
+#define	KEY_WAKEUP		143	/* System Wake Up */
+#define	KEY_FILE		144	/* AL Local Machine Browser */
+#define	KEY_SENDFILE		145
+#define	KEY_DELETEFILE		146
+#define	KEY_XFER		147
+#define	KEY_PROG1		148
+#define	KEY_PROG2		149
+#define	KEY_WWW			150	/* AL Internet Browser */
+#define	KEY_MSDOS		151
+#define	KEY_COFFEE		152	/* AL Terminal Lock/Screensaver */
+#define	KEY_SCREENLOCK		KEY_COFFEE
+#define	KEY_ROTATE_DISPLAY	153	/* Display orientation for e.g. tablets */
+#define	KEY_DIRECTION		KEY_ROTATE_DISPLAY
+#define	KEY_CYCLEWINDOWS	154
+#define	KEY_MAIL		155
+#define	KEY_BOOKMARKS		156	/* AC Bookmarks */
+#define	KEY_COMPUTER		157
+#define	KEY_BACK		158	/* AC Back */
+#define	KEY_FORWARD		159	/* AC Forward */
+#define	KEY_CLOSECD		160
+#define	KEY_EJECTCD		161
+#define	KEY_EJECTCLOSECD	162
+#define	KEY_NEXTSONG		163
+#define	KEY_PLAYPAUSE		164
+#define	KEY_PREVIOUSSONG	165
+#define	KEY_STOPCD		166
+#define	KEY_RECORD		167
+#define	KEY_REWIND		168
+#define	KEY_PHONE		169	/* Media Select Telephone */
+#define	KEY_ISO			170
+#define	KEY_CONFIG		171	/* AL Consumer Control Configuration */
+#define	KEY_HOMEPAGE		172	/* AC Home */
+#define	KEY_REFRESH		173	/* AC Refresh */
+#define	KEY_EXIT		174	/* AC Exit */
+#define	KEY_MOVE		175
+#define	KEY_EDIT		176
+#define	KEY_SCROLLUP		177
+#define	KEY_SCROLLDOWN		178
+#define	KEY_KPLEFTPAREN		179
+#define	KEY_KPRIGHTPAREN	180
+#define	KEY_NEW			181	/* AC New */
+#define	KEY_REDO		182	/* AC Redo/Repeat */
+
+#define	KEY_F13			183
+#define	KEY_F14			184
+#define	KEY_F15			185
+#define	KEY_F16			186
+#define	KEY_F17			187
+#define	KEY_F18			188
+#define	KEY_F19			189
+#define	KEY_F20			190
+#define	KEY_F21			191
+#define	KEY_F22			192
+#define	KEY_F23			193
+#define	KEY_F24			194
+
+#define	KEY_PLAYCD		200
+#define	KEY_PAUSECD		201
+#define	KEY_PROG3		202
+#define	KEY_PROG4		203
+#define	KEY_ALL_APPLICATIONS	204	/* AC Desktop Show All Applications */
+#define	KEY_DASHBOARD		KEY_ALL_APPLICATIONS
+#define	KEY_SUSPEND		205
+#define	KEY_CLOSE		206	/* AC Close */
+#define	KEY_PLAY		207
+#define	KEY_FASTFORWARD		208
+#define	KEY_BASSBOOST		209
+#define	KEY_PRINT		210	/* AC Print */
+#define	KEY_HP			211
+#define	KEY_CAMERA		212
+#define	KEY_SOUND		213
+#define	KEY_QUESTION		214
+#define	KEY_EMAIL		215
+#define	KEY_CHAT		216
+#define	KEY_SEARCH		217
+#define	KEY_CONNECT		218
+#define	KEY_FINANCE		219	/* AL Checkbook/Finance */
+#define	KEY_SPORT		220
+#define	KEY_SHOP		221
+#define	KEY_ALTERASE		222
+#define	KEY_CANCEL		223	/* AC Cancel */
+#define	KEY_BRIGHTNESSDOWN	224
+#define	KEY_BRIGHTNESSUP	225
+#define	KEY_MEDIA		226
+
+#define	KEY_SWITCHVIDEOMODE	227	/* Cycle between available video
+					   outputs (Monitor/LCD/TV-out/etc) */
+#define	KEY_KBDILLUMTOGGLE	228
+#define	KEY_KBDILLUMDOWN	229
+#define	KEY_KBDILLUMUP		230
+
+#define	KEY_SEND		231	/* AC Send */
+#define	KEY_REPLY		232	/* AC Reply */
+#define	KEY_FORWARDMAIL		233	/* AC Forward Msg */
+#define	KEY_SAVE		234	/* AC Save */
+#define	KEY_DOCUMENTS		235
+
+#define	KEY_BATTERY		236
+
+#define	KEY_BLUETOOTH		237
+#define	KEY_WLAN		238
+#define	KEY_UWB			239
+
+#define	KEY_UNKNOWN		240
+
+#define	KEY_VIDEO_NEXT		241	/* drive next video source */
+#define	KEY_VIDEO_PREV		242	/* drive previous video source */
+#define	KEY_BRIGHTNESS_CYCLE	243	/* brightness up, after max is min */
+#define	KEY_BRIGHTNESS_AUTO	244	/* Set Auto Brightness: manual
+					  brightness control is off,
+					  rely on ambient */
+#define	KEY_BRIGHTNESS_ZERO	KEY_BRIGHTNESS_AUTO
+#define	KEY_DISPLAY_OFF		245	/* display device to off state */
+
+#define	KEY_WWAN		246	/* Wireless WAN (LTE, UMTS, GSM, etc.) */
+#define	KEY_WIMAX		KEY_WWAN
+#define	KEY_RFKILL		247	/* Key that controls all radios */
+
+#define	KEY_MICMUTE		248	/* Mute / unmute the microphone */
+
+/* Code 255 is reserved for special needs of AT keyboard driver */
+
+#define	BTN_MISC		0x100
+#define	BTN_0			0x100
+#define	BTN_1			0x101
+#define	BTN_2			0x102
+#define	BTN_3			0x103
+#define	BTN_4			0x104
+#define	BTN_5			0x105
+#define	BTN_6			0x106
+#define	BTN_7			0x107
+#define	BTN_8			0x108
+#define	BTN_9			0x109
+
+#define	BTN_MOUSE		0x110
+#define	BTN_LEFT		0x110
+#define	BTN_RIGHT		0x111
+#define	BTN_MIDDLE		0x112
+#define	BTN_SIDE		0x113
+#define	BTN_EXTRA		0x114
+#define	BTN_FORWARD		0x115
+#define	BTN_BACK		0x116
+#define	BTN_TASK		0x117
+
+#define	BTN_JOYSTICK		0x120
+#define	BTN_TRIGGER		0x120
+#define	BTN_THUMB		0x121
+#define	BTN_THUMB2		0x122
+#define	BTN_TOP			0x123
+#define	BTN_TOP2		0x124
+#define	BTN_PINKIE		0x125
+#define	BTN_BASE		0x126
+#define	BTN_BASE2		0x127
+#define	BTN_BASE3		0x128
+#define	BTN_BASE4		0x129
+#define	BTN_BASE5		0x12a
+#define	BTN_BASE6		0x12b
+#define	BTN_DEAD		0x12f
+
+#define	BTN_GAMEPAD		0x130
+#define	BTN_SOUTH		0x130
+#define	BTN_A			BTN_SOUTH
+#define	BTN_EAST		0x131
+#define	BTN_B			BTN_EAST
+#define	BTN_C			0x132
+#define	BTN_NORTH		0x133
+#define	BTN_X			BTN_NORTH
+#define	BTN_WEST		0x134
+#define	BTN_Y			BTN_WEST
+#define	BTN_Z			0x135
+#define	BTN_TL			0x136
+#define	BTN_TR			0x137
+#define	BTN_TL2			0x138
+#define	BTN_TR2			0x139
+#define	BTN_SELECT		0x13a
+#define	BTN_START		0x13b
+#define	BTN_MODE		0x13c
+#define	BTN_THUMBL		0x13d
+#define	BTN_THUMBR		0x13e
+
+#define	BTN_DIGI		0x140
+#define	BTN_TOOL_PEN		0x140
+#define	BTN_TOOL_RUBBER		0x141
+#define	BTN_TOOL_BRUSH		0x142
+#define	BTN_TOOL_PENCIL		0x143
+#define	BTN_TOOL_AIRBRUSH	0x144
+#define	BTN_TOOL_FINGER		0x145
+#define	BTN_TOOL_MOUSE		0x146
+#define	BTN_TOOL_LENS		0x147
+#define	BTN_TOOL_QUINTTAP	0x148	/* Five fingers on trackpad */
+#define	BTN_STYLUS3		0x149
+#define	BTN_TOUCH		0x14a
+#define	BTN_STYLUS		0x14b
+#define	BTN_STYLUS2		0x14c
+#define	BTN_TOOL_DOUBLETAP	0x14d
+#define	BTN_TOOL_TRIPLETAP	0x14e
+#define	BTN_TOOL_QUADTAP	0x14f	/* Four fingers on trackpad */
+
+#define	BTN_WHEEL		0x150
+#define	BTN_GEAR_DOWN		0x150
+#define	BTN_GEAR_UP		0x151
+
+#define	KEY_OK			0x160
+#define	KEY_SELECT		0x161
+#define	KEY_GOTO		0x162
+#define	KEY_CLEAR		0x163
+#define	KEY_POWER2		0x164
+#define	KEY_OPTION		0x165
+#define	KEY_INFO		0x166	/* AL OEM Features/Tips/Tutorial */
+#define	KEY_TIME		0x167
+#define	KEY_VENDOR		0x168
+#define	KEY_ARCHIVE		0x169
+#define	KEY_PROGRAM		0x16a	/* Media Select Program Guide */
+#define	KEY_CHANNEL		0x16b
+#define	KEY_FAVORITES		0x16c
+#define	KEY_EPG			0x16d
+#define	KEY_PVR			0x16e	/* Media Select Home */
+#define	KEY_MHP			0x16f
+#define	KEY_LANGUAGE		0x170
+#define	KEY_TITLE		0x171
+#define	KEY_SUBTITLE		0x172
+#define	KEY_ANGLE		0x173
+#define	KEY_FULL_SCREEN		0x174	/* AC View Toggle */
+#define	KEY_ZOOM		KEY_FULL_SCREEN
+#define	KEY_MODE		0x175
+#define	KEY_KEYBOARD		0x176
+#define	KEY_ASPECT_RATIO	0x177	/* HUTRR37: Aspect */
+#define	KEY_SCREEN		KEY_ASPECT_RATIO
+#define	KEY_PC			0x178	/* Media Select Computer */
+#define	KEY_TV			0x179	/* Media Select TV */
+#define	KEY_TV2			0x17a	/* Media Select Cable */
+#define	KEY_VCR			0x17b	/* Media Select VCR */
+#define	KEY_VCR2		0x17c	/* VCR Plus */
+#define	KEY_SAT			0x17d	/* Media Select Satellite */
+#define	KEY_SAT2		0x17e
+#define	KEY_CD			0x17f	/* Media Select CD */
+#define	KEY_TAPE		0x180	/* Media Select Tape */
+#define	KEY_RADIO		0x181
+#define	KEY_TUNER		0x182	/* Media Select Tuner */
+#define	KEY_PLAYER		0x183
+#define	KEY_TEXT		0x184
+#define	KEY_DVD			0x185	/* Media Select DVD */
+#define	KEY_AUX			0x186
+#define	KEY_MP3			0x187
+#define	KEY_AUDIO		0x188	/* AL Audio Browser */
+#define	KEY_VIDEO		0x189	/* AL Movie Browser */
+#define	KEY_DIRECTORY		0x18a
+#define	KEY_LIST		0x18b
+#define	KEY_MEMO		0x18c	/* Media Select Messages */
+#define	KEY_CALENDAR		0x18d
+#define	KEY_RED			0x18e
+#define	KEY_GREEN		0x18f
+#define	KEY_YELLOW		0x190
+#define	KEY_BLUE		0x191
+#define	KEY_CHANNELUP		0x192	/* Channel Increment */
+#define	KEY_CHANNELDOWN		0x193	/* Channel Decrement */
+#define	KEY_FIRST		0x194
+#define	KEY_LAST		0x195	/* Recall Last */
+#define	KEY_AB			0x196
+#define	KEY_NEXT		0x197
+#define	KEY_RESTART		0x198
+#define	KEY_SLOW		0x199
+#define	KEY_SHUFFLE		0x19a
+#define	KEY_BREAK		0x19b
+#define	KEY_PREVIOUS		0x19c
+#define	KEY_DIGITS		0x19d
+#define	KEY_TEEN		0x19e
+#define	KEY_TWEN		0x19f
+#define	KEY_VIDEOPHONE		0x1a0	/* Media Select Video Phone */
+#define	KEY_GAMES		0x1a1	/* Media Select Games */
+#define	KEY_ZOOMIN		0x1a2	/* AC Zoom In */
+#define	KEY_ZOOMOUT		0x1a3	/* AC Zoom Out */
+#define	KEY_ZOOMRESET		0x1a4	/* AC Zoom */
+#define	KEY_WORDPROCESSOR	0x1a5	/* AL Word Processor */
+#define	KEY_EDITOR		0x1a6	/* AL Text Editor */
+#define	KEY_SPREADSHEET		0x1a7	/* AL Spreadsheet */
+#define	KEY_GRAPHICSEDITOR	0x1a8	/* AL Graphics Editor */
+#define	KEY_PRESENTATION	0x1a9	/* AL Presentation App */
+#define	KEY_DATABASE		0x1aa	/* AL Database App */
+#define	KEY_NEWS		0x1ab	/* AL Newsreader */
+#define	KEY_VOICEMAIL		0x1ac	/* AL Voicemail */
+#define	KEY_ADDRESSBOOK		0x1ad	/* AL Contacts/Address Book */
+#define	KEY_MESSENGER		0x1ae	/* AL Instant Messaging */
+#define	KEY_DISPLAYTOGGLE	0x1af	/* Turn display (LCD) on and off */
+#define	KEY_BRIGHTNESS_TOGGLE	KEY_DISPLAYTOGGLE
+#define	KEY_SPELLCHECK		0x1b0   /* AL Spell Check */
+#define	KEY_LOGOFF		0x1b1   /* AL Logoff */
+
+#define	KEY_DOLLAR		0x1b2
+#define	KEY_EURO		0x1b3
+
+#define	KEY_FRAMEBACK		0x1b4	/* Consumer - transport controls */
+#define	KEY_FRAMEFORWARD	0x1b5
+#define	KEY_CONTEXT_MENU	0x1b6	/* GenDesc - system context menu */
+#define	KEY_MEDIA_REPEAT	0x1b7	/* Consumer - transport control */
+#define	KEY_10CHANNELSUP	0x1b8	/* 10 channels up (10+) */
+#define	KEY_10CHANNELSDOWN	0x1b9	/* 10 channels down (10-) */
+#define	KEY_IMAGES		0x1ba	/* AL Image Browser */
+#define	KEY_NOTIFICATION_CENTER	0x1bc	/* Show/hide the notification center */
+#define	KEY_PICKUP_PHONE	0x1bd	/* Answer incoming call */
+#define	KEY_HANGUP_PHONE	0x1be	/* Decline incoming call */
+
+#define	KEY_DEL_EOL		0x1c0
+#define	KEY_DEL_EOS		0x1c1
+#define	KEY_INS_LINE		0x1c2
+#define	KEY_DEL_LINE		0x1c3
+
+#define	KEY_FN			0x1d0
+#define	KEY_FN_ESC		0x1d1
+#define	KEY_FN_F1		0x1d2
+#define	KEY_FN_F2		0x1d3
+#define	KEY_FN_F3		0x1d4
+#define	KEY_FN_F4		0x1d5
+#define	KEY_FN_F5		0x1d6
+#define	KEY_FN_F6		0x1d7
+#define	KEY_FN_F7		0x1d8
+#define	KEY_FN_F8		0x1d9
+#define	KEY_FN_F9		0x1da
+#define	KEY_FN_F10		0x1db
+#define	KEY_FN_F11		0x1dc
+#define	KEY_FN_F12		0x1dd
+#define	KEY_FN_1		0x1de
+#define	KEY_FN_2		0x1df
+#define	KEY_FN_D		0x1e0
+#define	KEY_FN_E		0x1e1
+#define	KEY_FN_F		0x1e2
+#define	KEY_FN_S		0x1e3
+#define	KEY_FN_B		0x1e4
+#define	KEY_FN_RIGHT_SHIFT	0x1e5
+
+#define	KEY_BRL_DOT1		0x1f1
+#define	KEY_BRL_DOT2		0x1f2
+#define	KEY_BRL_DOT3		0x1f3
+#define	KEY_BRL_DOT4		0x1f4
+#define	KEY_BRL_DOT5		0x1f5
+#define	KEY_BRL_DOT6		0x1f6
+#define	KEY_BRL_DOT7		0x1f7
+#define	KEY_BRL_DOT8		0x1f8
+#define	KEY_BRL_DOT9		0x1f9
+#define	KEY_BRL_DOT10		0x1fa
+
+#define	KEY_NUMERIC_0		0x200	/* used by phones, remote controls, */
+#define	KEY_NUMERIC_1		0x201	/* and other keypads */
+#define	KEY_NUMERIC_2		0x202
+#define	KEY_NUMERIC_3		0x203
+#define	KEY_NUMERIC_4		0x204
+#define	KEY_NUMERIC_5		0x205
+#define	KEY_NUMERIC_6		0x206
+#define	KEY_NUMERIC_7		0x207
+#define	KEY_NUMERIC_8		0x208
+#define	KEY_NUMERIC_9		0x209
+#define	KEY_NUMERIC_STAR	0x20a
+#define	KEY_NUMERIC_POUND	0x20b
+#define	KEY_NUMERIC_A		0x20c	/* Phone key A - HUT Telephony 0xb9 */
+#define	KEY_NUMERIC_B		0x20d
+#define	KEY_NUMERIC_C		0x20e
+#define	KEY_NUMERIC_D		0x20f
+
+#define	KEY_CAMERA_FOCUS	0x210
+#define	KEY_WPS_BUTTON		0x211	/* WiFi Protected Setup key */
+
+#define	KEY_TOUCHPAD_TOGGLE	0x212	/* Request switch touchpad on or off */
+#define	KEY_TOUCHPAD_ON		0x213
+#define	KEY_TOUCHPAD_OFF	0x214
+
+#define	KEY_CAMERA_ZOOMIN	0x215
+#define	KEY_CAMERA_ZOOMOUT	0x216
+#define	KEY_CAMERA_UP		0x217
+#define	KEY_CAMERA_DOWN		0x218
+#define	KEY_CAMERA_LEFT		0x219
+#define	KEY_CAMERA_RIGHT	0x21a
+
+#define	KEY_ATTENDANT_ON	0x21b
+#define	KEY_ATTENDANT_OFF	0x21c
+#define	KEY_ATTENDANT_TOGGLE	0x21d	/* Attendant call on or off */
+#define	KEY_LIGHTS_TOGGLE	0x21e	/* Reading light on or off */
+
+#define	BTN_DPAD_UP		0x220
+#define	BTN_DPAD_DOWN		0x221
+#define	BTN_DPAD_LEFT		0x222
+#define	BTN_DPAD_RIGHT		0x223
+
+#define	KEY_ALS_TOGGLE		0x230	/* Ambient light sensor */
+#define	KEY_ROTATE_LOCK_TOGGLE	0x231	/* Display rotation lock */
+
+#define	KEY_BUTTONCONFIG		0x240	/* AL Button Configuration */
+#define	KEY_TASKMANAGER		0x241	/* AL Task/Project Manager */
+#define	KEY_JOURNAL		0x242	/* AL Log/Journal/Timecard */
+#define	KEY_CONTROLPANEL		0x243	/* AL Control Panel */
+#define	KEY_APPSELECT		0x244	/* AL Select Task/Application */
+#define	KEY_SCREENSAVER		0x245	/* AL Screen Saver */
+#define	KEY_VOICECOMMAND		0x246	/* Listening Voice Command */
+#define	KEY_ASSISTANT		0x247	/* AL Context-aware desktop assistant */
+#define	KEY_KBD_LAYOUT_NEXT	0x248	/* AC Next Keyboard Layout Select */
+#define	KEY_EMOJI_PICKER	0x249	/* Show/hide emoji picker (HUTRR101) */
+#define	KEY_DICTATE		0x24a	/* Start or Stop Voice Dictation Session (HUTRR99) */
+#define	KEY_CAMERA_ACCESS_ENABLE	0x24b	/* Enables programmatic access to camera devices. (HUTRR72) */
+#define	KEY_CAMERA_ACCESS_DISABLE	0x24c	/* Disables programmatic access to camera devices. (HUTRR72) */
+#define	KEY_CAMERA_ACCESS_TOGGLE	0x24d	/* Toggles the current state of the camera access control. (HUTRR72) */
+
+#define	KEY_BRIGHTNESS_MIN		0x250	/* Set Brightness to Minimum */
+#define	KEY_BRIGHTNESS_MAX		0x251	/* Set Brightness to Maximum */
+
+#define	KEY_KBDINPUTASSIST_PREV		0x260
+#define	KEY_KBDINPUTASSIST_NEXT		0x261
+#define	KEY_KBDINPUTASSIST_PREVGROUP		0x262
+#define	KEY_KBDINPUTASSIST_NEXTGROUP		0x263
+#define	KEY_KBDINPUTASSIST_ACCEPT		0x264
+#define	KEY_KBDINPUTASSIST_CANCEL		0x265
+
+/* Diagonal movement keys */
+#define	KEY_RIGHT_UP			0x266
+#define	KEY_RIGHT_DOWN			0x267
+#define	KEY_LEFT_UP			0x268
+#define	KEY_LEFT_DOWN			0x269
+
+#define	KEY_ROOT_MENU			0x26a	/* Show Device's Root Menu */
+/* Show Top Menu of the Media (e.g. DVD) */
+#define	KEY_MEDIA_TOP_MENU		0x26b
+#define	KEY_NUMERIC_11			0x26c
+#define	KEY_NUMERIC_12			0x26d
+/*
+ * Toggle Audio Description: refers to an audio service that helps blind and
+ * visually impaired consumers understand the action in a program. Note: in
+ * some countries this is referred to as "Video Description".
+ */
+#define	KEY_AUDIO_DESC			0x26e
+#define	KEY_3D_MODE			0x26f
+#define	KEY_NEXT_FAVORITE		0x270
+#define	KEY_STOP_RECORD			0x271
+#define	KEY_PAUSE_RECORD		0x272
+#define	KEY_VOD				0x273 /* Video on Demand */
+#define	KEY_UNMUTE			0x274
+#define	KEY_FASTREVERSE			0x275
+#define	KEY_SLOWREVERSE			0x276
+/*
+ * Control a data application associated with the currently viewed channel,
+ * e.g. teletext or data broadcast application (MHEG, MHP, HbbTV, etc.)
+ */
+#define	KEY_DATA			0x277
+#define	KEY_ONSCREEN_KEYBOARD		0x278
+/* Electronic privacy screen control */
+#define	KEY_PRIVACY_SCREEN_TOGGLE	0x279
+
+/* Select an area of screen to be copied */
+#define	KEY_SELECTIVE_SCREENSHOT	0x27a
+
+/* Move the focus to the next or previous user controllable element within a UI container */
+#define	KEY_NEXT_ELEMENT		0x27b
+#define	KEY_PREVIOUS_ELEMENT		0x27c
+
+/* Toggle Autopilot engagement */
+#define	KEY_AUTOPILOT_ENGAGE_TOGGLE	0x27d
+
+/* Shortcut Keys */
+#define	KEY_MARK_WAYPOINT		0x27e
+#define	KEY_SOS				0x27f
+#define	KEY_NAV_CHART			0x280
+#define	KEY_FISHING_CHART		0x281
+#define	KEY_SINGLE_RANGE_RADAR		0x282
+#define	KEY_DUAL_RANGE_RADAR		0x283
+#define	KEY_RADAR_OVERLAY		0x284
+#define	KEY_TRADITIONAL_SONAR		0x285
+#define	KEY_CLEARVU_SONAR		0x286
+#define	KEY_SIDEVU_SONAR		0x287
+#define	KEY_NAV_INFO			0x288
+#define	KEY_BRIGHTNESS_MENU		0x289
+
+/*
+ * Some keyboards have keys which do not have a defined meaning, these keys
+ * are intended to be programmed / bound to macros by the user. For most
+ * keyboards with these macro-keys the key-sequence to inject, or action to
+ * take, is all handled by software on the host side. So from the kernel's
+ * point of view these are just normal keys.
+ *
+ * The KEY_MACRO# codes below are intended for such keys, which may be labeled
+ * e.g. G1-G18, or S1 - S30. The KEY_MACRO# codes MUST NOT be used for keys
+ * where the marking on the key does indicate a defined meaning / purpose.
+ *
+ * The KEY_MACRO# codes MUST also NOT be used as fallback for when no existing
+ * KEY_FOO define matches the marking / purpose. In this case a new KEY_FOO
+ * define MUST be added.
+ */
+#define	KEY_MACRO1			0x290
+#define	KEY_MACRO2			0x291
+#define	KEY_MACRO3			0x292
+#define	KEY_MACRO4			0x293
+#define	KEY_MACRO5			0x294
+#define	KEY_MACRO6			0x295
+#define	KEY_MACRO7			0x296
+#define	KEY_MACRO8			0x297
+#define	KEY_MACRO9			0x298
+#define	KEY_MACRO10			0x299
+#define	KEY_MACRO11			0x29a
+#define	KEY_MACRO12			0x29b
+#define	KEY_MACRO13			0x29c
+#define	KEY_MACRO14			0x29d
+#define	KEY_MACRO15			0x29e
+#define	KEY_MACRO16			0x29f
+#define	KEY_MACRO17			0x2a0
+#define	KEY_MACRO18			0x2a1
+#define	KEY_MACRO19			0x2a2
+#define	KEY_MACRO20			0x2a3
+#define	KEY_MACRO21			0x2a4
+#define	KEY_MACRO22			0x2a5
+#define	KEY_MACRO23			0x2a6
+#define	KEY_MACRO24			0x2a7
+#define	KEY_MACRO25			0x2a8
+#define	KEY_MACRO26			0x2a9
+#define	KEY_MACRO27			0x2aa
+#define	KEY_MACRO28			0x2ab
+#define	KEY_MACRO29			0x2ac
+#define	KEY_MACRO30			0x2ad
+
+/*
+ * Some keyboards with the macro-keys described above have some extra keys
+ * for controlling the host-side software responsible for the macro handling:
+ * -A macro recording start/stop key. Note that not all keyboards which emit
+ *  KEY_MACRO_RECORD_START will also emit KEY_MACRO_RECORD_STOP if
+ *  KEY_MACRO_RECORD_STOP is not advertised, then KEY_MACRO_RECORD_START
+ *  should be interpreted as a recording start/stop toggle;
+ * -Keys for switching between different macro (pre)sets, either a key for
+ *  cycling through the configured presets or keys to directly select a preset.
+ */
+#define	KEY_MACRO_RECORD_START		0x2b0
+#define	KEY_MACRO_RECORD_STOP		0x2b1
+#define	KEY_MACRO_PRESET_CYCLE		0x2b2
+#define	KEY_MACRO_PRESET1		0x2b3
+#define	KEY_MACRO_PRESET2		0x2b4
+#define	KEY_MACRO_PRESET3		0x2b5
+
+/*
+ * Some keyboards have a buildin LCD panel where the contents are controlled
+ * by the host. Often these have a number of keys directly below the LCD
+ * intended for controlling a menu shown on the LCD. These keys often don't
+ * have any labeling so we just name them KEY_KBD_LCD_MENU#
+ */
+#define	KEY_KBD_LCD_MENU1		0x2b8
+#define	KEY_KBD_LCD_MENU2		0x2b9
+#define	KEY_KBD_LCD_MENU3		0x2ba
+#define	KEY_KBD_LCD_MENU4		0x2bb
+#define	KEY_KBD_LCD_MENU5		0x2bc
+
+#define	BTN_TRIGGER_HAPPY		0x2c0
+#define	BTN_TRIGGER_HAPPY1		0x2c0
+#define	BTN_TRIGGER_HAPPY2		0x2c1
+#define	BTN_TRIGGER_HAPPY3		0x2c2
+#define	BTN_TRIGGER_HAPPY4		0x2c3
+#define	BTN_TRIGGER_HAPPY5		0x2c4
+#define	BTN_TRIGGER_HAPPY6		0x2c5
+#define	BTN_TRIGGER_HAPPY7		0x2c6
+#define	BTN_TRIGGER_HAPPY8		0x2c7
+#define	BTN_TRIGGER_HAPPY9		0x2c8
+#define	BTN_TRIGGER_HAPPY10		0x2c9
+#define	BTN_TRIGGER_HAPPY11		0x2ca
+#define	BTN_TRIGGER_HAPPY12		0x2cb
+#define	BTN_TRIGGER_HAPPY13		0x2cc
+#define	BTN_TRIGGER_HAPPY14		0x2cd
+#define	BTN_TRIGGER_HAPPY15		0x2ce
+#define	BTN_TRIGGER_HAPPY16		0x2cf
+#define	BTN_TRIGGER_HAPPY17		0x2d0
+#define	BTN_TRIGGER_HAPPY18		0x2d1
+#define	BTN_TRIGGER_HAPPY19		0x2d2
+#define	BTN_TRIGGER_HAPPY20		0x2d3
+#define	BTN_TRIGGER_HAPPY21		0x2d4
+#define	BTN_TRIGGER_HAPPY22		0x2d5
+#define	BTN_TRIGGER_HAPPY23		0x2d6
+#define	BTN_TRIGGER_HAPPY24		0x2d7
+#define	BTN_TRIGGER_HAPPY25		0x2d8
+#define	BTN_TRIGGER_HAPPY26		0x2d9
+#define	BTN_TRIGGER_HAPPY27		0x2da
+#define	BTN_TRIGGER_HAPPY28		0x2db
+#define	BTN_TRIGGER_HAPPY29		0x2dc
+#define	BTN_TRIGGER_HAPPY30		0x2dd
+#define	BTN_TRIGGER_HAPPY31		0x2de
+#define	BTN_TRIGGER_HAPPY32		0x2df
+#define	BTN_TRIGGER_HAPPY33		0x2e0
+#define	BTN_TRIGGER_HAPPY34		0x2e1
+#define	BTN_TRIGGER_HAPPY35		0x2e2
+#define	BTN_TRIGGER_HAPPY36		0x2e3
+#define	BTN_TRIGGER_HAPPY37		0x2e4
+#define	BTN_TRIGGER_HAPPY38		0x2e5
+#define	BTN_TRIGGER_HAPPY39		0x2e6
+#define	BTN_TRIGGER_HAPPY40		0x2e7
+
+/* We avoid low common keys in module aliases so they don't get huge. */
+#define	KEY_MIN_INTERESTING	KEY_MUTE
+#define	KEY_MAX			0x2ff
+#define	KEY_CNT			(KEY_MAX+1)
+
+/*
+ * Relative axes
+ */
+
+#define	REL_X			0x00
+#define	REL_Y			0x01
+#define	REL_Z			0x02
+#define	REL_RX			0x03
+#define	REL_RY			0x04
+#define	REL_RZ			0x05
+#define	REL_HWHEEL		0x06
+#define	REL_DIAL		0x07
+#define	REL_WHEEL		0x08
+#define	REL_MISC		0x09
+/*
+ * 0x0a is reserved and should not be used in input drivers.
+ * It was used by HID as REL_MISC+1 and userspace needs to detect if
+ * the next REL_* event is correct or is just REL_MISC + n.
+ * We define here REL_RESERVED so userspace can rely on it and detect
+ * the situation described above.
+ */
+#define	REL_RESERVED		0x0a
+#define	REL_WHEEL_HI_RES	0x0b
+#define	REL_HWHEEL_HI_RES	0x0c
+#define	REL_MAX			0x0f
+#define	REL_CNT			(REL_MAX+1)
+
+/*
+ * Absolute axes
+ */
+
+#define	ABS_X			0x00
+#define	ABS_Y			0x01
+#define	ABS_Z			0x02
+#define	ABS_RX			0x03
+#define	ABS_RY			0x04
+#define	ABS_RZ			0x05
+#define	ABS_THROTTLE		0x06
+#define	ABS_RUDDER		0x07
+#define	ABS_WHEEL		0x08
+#define	ABS_GAS			0x09
+#define	ABS_BRAKE		0x0a
+#define	ABS_HAT0X		0x10
+#define	ABS_HAT0Y		0x11
+#define	ABS_HAT1X		0x12
+#define	ABS_HAT1Y		0x13
+#define	ABS_HAT2X		0x14
+#define	ABS_HAT2Y		0x15
+#define	ABS_HAT3X		0x16
+#define	ABS_HAT3Y		0x17
+#define	ABS_PRESSURE		0x18
+#define	ABS_DISTANCE		0x19
+#define	ABS_TILT_X		0x1a
+#define	ABS_TILT_Y		0x1b
+#define	ABS_TOOL_WIDTH		0x1c
+
+#define	ABS_VOLUME		0x20
+#define	ABS_PROFILE		0x21
+
+#define	ABS_MISC		0x28
+
+/*
+ * 0x2e is reserved and should not be used in input drivers.
+ * It was used by HID as ABS_MISC+6 and userspace needs to detect if
+ * the next ABS_* event is correct or is just ABS_MISC + n.
+ * We define here ABS_RESERVED so userspace can rely on it and detect
+ * the situation described above.
+ */
+#define	ABS_RESERVED		0x2e
+
+#define	ABS_MT_SLOT		0x2f	/* MT slot being modified */
+#define	ABS_MT_TOUCH_MAJOR	0x30	/* Major axis of touching ellipse */
+#define	ABS_MT_TOUCH_MINOR	0x31	/* Minor axis (omit if circular) */
+#define	ABS_MT_WIDTH_MAJOR	0x32	/* Major axis of approaching ellipse */
+#define	ABS_MT_WIDTH_MINOR	0x33	/* Minor axis (omit if circular) */
+#define	ABS_MT_ORIENTATION	0x34	/* Ellipse orientation */
+#define	ABS_MT_POSITION_X	0x35	/* Center X touch position */
+#define	ABS_MT_POSITION_Y	0x36	/* Center Y touch position */
+#define	ABS_MT_TOOL_TYPE	0x37	/* Type of touching device */
+#define	ABS_MT_BLOB_ID		0x38	/* Group a set of packets as a blob */
+#define	ABS_MT_TRACKING_ID	0x39	/* Unique ID of initiated contact */
+#define	ABS_MT_PRESSURE		0x3a	/* Pressure on contact area */
+#define	ABS_MT_DISTANCE		0x3b	/* Contact hover distance */
+#define	ABS_MT_TOOL_X		0x3c	/* Center X tool position */
+#define	ABS_MT_TOOL_Y		0x3d	/* Center Y tool position */
+
+#define	ABS_MAX			0x3f
+#define	ABS_CNT			(ABS_MAX+1)
+
+/*
+ * Switch events
+ */
+
+#define	SW_LID			0x00  /* set = lid shut */
+#define	SW_TABLET_MODE		0x01  /* set = tablet mode */
+#define	SW_HEADPHONE_INSERT	0x02  /* set = inserted */
+#define	SW_RFKILL_ALL		0x03  /* rfkill master switch, type "any"
+					 set = radio enabled */
+#define	SW_RADIO		SW_RFKILL_ALL	/* deprecated */
+#define	SW_MICROPHONE_INSERT	0x04  /* set = inserted */
+#define	SW_DOCK			0x05  /* set = plugged into dock */
+#define	SW_LINEOUT_INSERT	0x06  /* set = inserted */
+#define	SW_JACK_PHYSICAL_INSERT 0x07  /* set = mechanical switch set */
+#define	SW_VIDEOOUT_INSERT	0x08  /* set = inserted */
+#define	SW_CAMERA_LENS_COVER	0x09  /* set = lens covered */
+#define	SW_KEYPAD_SLIDE		0x0a  /* set = keypad slide out */
+#define	SW_FRONT_PROXIMITY	0x0b  /* set = front proximity sensor active */
+#define	SW_ROTATE_LOCK		0x0c  /* set = rotate locked/disabled */
+#define	SW_LINEIN_INSERT	0x0d  /* set = inserted */
+#define	SW_MUTE_DEVICE		0x0e  /* set = device disabled */
+#define	SW_PEN_INSERTED		0x0f  /* set = pen inserted */
+#define	SW_MACHINE_COVER	0x10  /* set = cover closed */
+#define	SW_MAX			0x10
+#define	SW_CNT			(SW_MAX+1)
+
+/*
+ * Misc events
+ */
+
+#define	MSC_SERIAL		0x00
+#define	MSC_PULSELED		0x01
+#define	MSC_GESTURE		0x02
+#define	MSC_RAW			0x03
+#define	MSC_SCAN		0x04
+#define	MSC_TIMESTAMP		0x05
+#define	MSC_MAX			0x07
+#define	MSC_CNT			(MSC_MAX+1)
+
+/*
+ * LEDs
+ */
+
+#define	LED_NUML		0x00
+#define	LED_CAPSL		0x01
+#define	LED_SCROLLL		0x02
+#define	LED_COMPOSE		0x03
+#define	LED_KANA		0x04
+#define	LED_SLEEP		0x05
+#define	LED_SUSPEND		0x06
+#define	LED_MUTE		0x07
+#define	LED_MISC		0x08
+#define	LED_MAIL		0x09
+#define	LED_CHARGING		0x0a
+#define	LED_MAX			0x0f
+#define	LED_CNT			(LED_MAX+1)
+
+/*
+ * Autorepeat values
+ */
+
+#define	REP_DELAY		0x00
+#define	REP_PERIOD		0x01
+#define	REP_MAX			0x01
+#define	REP_CNT			(REP_MAX+1)
+
+/*
+ * Sounds
+ */
+
+#define	SND_CLICK		0x00
+#define	SND_BELL		0x01
+#define	SND_TONE		0x02
+#define	SND_MAX			0x07
+#define	SND_CNT			(SND_MAX+1)
+
+#endif /* _EVDEV_INPUT_EVENT_CODES_H */

Kernel/Devices/HID/VirtIO/Input.cpp

@@ -0,0 +1,446 @@
+/*
+ * Copyright (c) 2024, Sönke Holz <sholz8530@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <AK/Span.h>
+#include <AK/String.h>
+#include <Kernel/Bus/VirtIO/Transport/PCIe/TransportLink.h>
+#include <Kernel/Devices/HID/Management.h>
+#include <Kernel/Devices/HID/VirtIO/EvDevDefinitions.h>
+#include <Kernel/Devices/HID/VirtIO/Input.h>
+#include <Kernel/Sections.h>
+
+namespace Kernel::VirtIO {
+
+struct VirtIOInputEvent {
+    LittleEndian<u16> type;
+    LittleEndian<u16> code;
+    LittleEndian<u32> value;
+};
+static_assert(AssertSize<VirtIOInputEvent, 8>());
+
+struct VirtIOInputConfig {
+    enum class Select : u8 {
+        Unset = 0x00,
+        IDName = 0x01,
+        IDSerial = 0x02,
+        IDDevIDs = 0x03,
+        PropBits = 0x10,
+        EvBits = 0x11,
+        AbsInfo = 0x12,
+    };
+
+    struct AbsInfo {
+        LittleEndian<u32> min;
+        LittleEndian<u32> max;
+        LittleEndian<u32> fuzz;
+        LittleEndian<u32> flat;
+        LittleEndian<u32> res;
+    };
+    static_assert(AssertSize<AbsInfo, 20>());
+
+    struct DevIDs {
+        LittleEndian<u16> bustype;
+        LittleEndian<u16> vendor;
+        LittleEndian<u16> product;
+        LittleEndian<u16> version;
+    };
+    static_assert(AssertSize<DevIDs, 8>());
+
+    Select select;
+    u8 subsel;
+    u8 size;
+    u8 reserved[5];
+    union {
+        char string[128];
+        u8 bitmap[128];
+        AbsInfo abs;
+        DevIDs ids;
+    } u;
+};
+static_assert(AssertSize<VirtIOInputConfig, 136>());
+
+// clang-format off
+static constexpr auto unshifted_evdev_key_map = to_array<KeyCodeEntry const>({
+    // 0x00-0x0f
+    { Key_Invalid, 0xff },           { Key_Escape, 0x01 },            { Key_1, 0x02 },                 { Key_2, 0x03 },
+    { Key_3, 0x04 },                 { Key_4, 0x05 },                 { Key_5, 0x06 },                 { Key_6, 0x07 },
+    { Key_7, 0x08 },                 { Key_8, 0x09 },                 { Key_9, 0x0a },                 { Key_0, 0x0b },
+    { Key_Minus, 0x0c },             { Key_Equal, 0x0d },             { Key_Backspace, 0x0e },         { Key_Tab, 0x0f },
+
+    // 0x10-0x1f
+    { Key_Q, 0x10 },                 { Key_W, 0x11 },                 { Key_E, 0x12 },                 { Key_R, 0x13 },
+    { Key_T, 0x14 },                 { Key_Y, 0x15 },                 { Key_U, 0x16 },                 { Key_I, 0x17 },
+    { Key_O, 0x18 },                 { Key_P, 0x19 },                 { Key_LeftBracket, 0x1a },       { Key_RightBracket, 0x1b },
+    { Key_Return, 0x1c },            { Key_Control, 0x1d },           { Key_A, 0x1e },                 { Key_S, 0x1f },
+
+    // 0x20-0x2f
+    { Key_D, 0x20 },                 { Key_F, 0x21 },                 { Key_G, 0x22 },                 { Key_H, 0x23 },
+    { Key_J, 0x24 },                 { Key_K, 0x25 },                 { Key_L, 0x26 },                 { Key_Semicolon, 0x27 },
+    { Key_Apostrophe, 0x28 },        { Key_Backtick, 0x29 },          { Key_LeftShift, 0xff },         { Key_Backslash, 0x2b },
+    { Key_Z, 0x2c },                 { Key_X, 0x2d },                 { Key_C, 0x2e },                 { Key_V, 0x2f },
+
+    // 0x30-0x3f
+    { Key_B, 0x30 },                 { Key_N, 0x31 },                 { Key_M, 0x32 },                 { Key_Comma, 0x33 },
+    { Key_Period, 0x34 },            { Key_Slash, 0x35 },             { Key_RightShift, 0xff },        { Key_Asterisk, 0x37 },
+    { Key_Alt, 0xff },               { Key_Space, 0x39 },             { Key_CapsLock, 0xff },          { Key_F1, 0xff },
+    { Key_F2, 0xff },                { Key_F3, 0xff },                { Key_F4, 0xff },                { Key_F5, 0xff },
+
+    // 0x40-0x4f
+    { Key_F6, 0xff },                { Key_F7, 0xff },                { Key_F8, 0xff },                { Key_F9, 0xff },
+    { Key_F10, 0xff },               { Key_NumLock, 0x45 },           { Key_ScrollLock, 0xff },        { Key_Home, 0xff },
+    { Key_Up, 0xff },                { Key_PageUp, 0xff },            { Key_Minus, 0x4a },             { Key_Left, 0xff },
+    { Key_Invalid, 0xff },           { Key_Right, 0xff },             { Key_Plus, 0x4e },              { Key_End, 0xff },
+
+    // 0x50-0x5f
+    { Key_Down, 0xff },              { Key_PageDown, 0xff },          { Key_Insert, 0xff },            { Key_Delete, 0xff },
+    { Key_Invalid, 0xff },           { Key_Invalid, 0xff },           { Key_Backslash, 0x56 },         { Key_F11, 0xff },
+    { Key_F12, 0xff },               { Key_Invalid, 0xff },           { Key_Invalid, 0xff },           { Key_Invalid, 0xff },
+    { Key_Invalid, 0xff },           { Key_Invalid, 0xff },           { Key_Invalid, 0xff },           { Key_Invalid, 0xff },
+
+    // 0x60-0x6f
+    // FIXME: Add Numpad "/" key to character map for key code 0x62
+    { Key_Return, 0xff },            { Key_RightControl, 0xff },      { Key_Slash, 0xff },             { Key_SysRq, 0xff },
+    { Key_RightAlt, 0xff },          { Key_Invalid, 0xff },           { Key_Home, 0xff },              { Key_Up, 0xff },
+    { Key_PageUp, 0xff },            { Key_Left, 0xff },              { Key_Right, 0xff },             { Key_End, 0xff },
+    { Key_Down, 0xff },              { Key_PageDown, 0xff },          { Key_Insert, 0xff },            { Key_Delete, 0xff },
+
+    // 0x70-0x7f
+    { Key_Invalid, 0xff },           { Key_Mute, 0xff },              { Key_VolumeDown, 0xff },        { Key_VolumeUp, 0xff },
+    { Key_Power, 0xff },             { Key_Equal, 0xff },             { Key_Invalid, 0xff },           { Key_PauseBreak, 0xff },
+    { Key_Invalid, 0xff },           { Key_Invalid, 0xff },           { Key_Invalid, 0xff },           { Key_Invalid, 0xff },
+    { Key_Invalid, 0xff },           { Key_Super, 0xff },             { Key_Super, 0xff },             { Key_Menu, 0xff },
+
+    // 0x80-0x8f
+    { Key_Stop, 0xff },              { Key_Invalid, 0xff },           { Key_Invalid, 0xff },           { Key_Invalid, 0xff },
+    { Key_Invalid, 0xff },           { Key_Invalid, 0xff },           { Key_Invalid, 0xff },           { Key_Invalid, 0xff },
+    { Key_Invalid, 0xff },           { Key_Invalid, 0xff },           { Key_Invalid, 0xff },           { Key_Invalid, 0xff },
+    { Key_Calculator, 0xff },        { Key_Invalid, 0xff },           { Key_Sleep, 0xff },             { Key_Wake, 0xff },
+});
+// clang-format on
+
+// clang-format off
+static constexpr auto shifted_evdev_key_map = to_array<KeyCodeEntry const>({
+    // 0x00-0x0f
+    { Key_Invalid, 0xff },           { Key_Escape, 0x01 },            { Key_ExclamationPoint, 0x02 },  { Key_AtSign, 0x03 },
+    { Key_Hashtag, 0x04 },           { Key_Dollar, 0x05 },            { Key_Percent, 0x06 },           { Key_Circumflex, 0x07 },
+    { Key_Ampersand, 0x08 },         { Key_Asterisk, 0x09 },          { Key_LeftParen, 0x0a },         { Key_RightParen, 0x0b },
+    { Key_Underscore, 0x0c },        { Key_Plus, 0x0d },              { Key_Backspace, 0x0e },         { Key_Tab, 0x0f },
+
+    // 0x10-0x1f
+    { Key_Q, 0x10 },                 { Key_W, 0x11 },                 { Key_E, 0x12 },                 { Key_R, 0x13 },
+    { Key_T, 0x14 },                 { Key_Y, 0x15 },                 { Key_U, 0x16 },                 { Key_I, 0x17 },
+    { Key_O, 0x18 },                 { Key_P, 0x19 },                 { Key_LeftBrace, 0x1a },         { Key_RightBrace, 0x1b },
+    { Key_Return, 0x1c },            { Key_Control, 0x1d },           { Key_A, 0x1e },                 { Key_S, 0x1f },
+
+    // 0x20-0x2f
+    { Key_D, 0x20 },                 { Key_F, 0x21 },                 { Key_G, 0x22 },                 { Key_H, 0x23 },
+    { Key_J, 0x24 },                 { Key_K, 0x25 },                 { Key_L, 0x26 },                 { Key_Colon, 0x27 },
+    { Key_DoubleQuote, 0x28 },       { Key_Tilde, 0x29 },             { Key_LeftShift, 0xff },         { Key_Pipe, 0x2b },
+    { Key_Z, 0x2c },                 { Key_X, 0x2d },                 { Key_C, 0x2e },                 { Key_V, 0x2f },
+
+    // 0x30-0x3f
+    { Key_B, 0x30 },                 { Key_N, 0x31 },                 { Key_M, 0x32 },                 { Key_LessThan, 0x33 },
+    { Key_GreaterThan, 0x34 },       { Key_QuestionMark, 0x35 },      { Key_RightShift, 0xff },        { Key_Asterisk, 0x37 },
+    { Key_Alt, 0xff },               { Key_Space, 0x39 },             { Key_CapsLock, 0xff },          { Key_F1, 0xff },
+    { Key_F2, 0xff },                { Key_F3, 0xff },                { Key_F4, 0xff },                { Key_F5, 0xff },
+
+    // 0x40-0x4f
+    { Key_F6, 0xff },                { Key_F7, 0xff },                { Key_F8, 0xff },                { Key_F9, 0xff },
+    { Key_F10, 0xff },               { Key_NumLock, 0xff },           { Key_ScrollLock, 0xff },        { Key_Home, 0xff },
+    { Key_Up, 0xff },                { Key_PageUp, 0xff },            { Key_Minus, 0x4a },             { Key_Left, 0xff },
+    { Key_Invalid, 0xff },           { Key_Right, 0xff },             { Key_Plus, 0x4e },              { Key_End, 0xff },
+
+    // 0x50-0x5f
+    { Key_Down, 0xff },              { Key_PageDown, 0xff },          { Key_Insert, 0xff },            { Key_Delete, 0xff },
+    { Key_Invalid, 0xff },           { Key_Invalid, 0xff },           { Key_Pipe, 0x56 },              { Key_F11, 0xff },
+    { Key_F12, 0xff },               { Key_Invalid, 0xff },           { Key_Invalid, 0xff },           { Key_Invalid, 0xff },
+    { Key_Invalid, 0xff },           { Key_Invalid, 0xff },           { Key_Invalid, 0xff },           { Key_Invalid, 0xff },
+});
+// clang-format on
+
+UNMAP_AFTER_INIT NonnullLockRefPtr<Input> Input::must_create_for_pci_instance(PCI::DeviceIdentifier const& device_identifier)
+{
+    auto pci_transport_link = MUST(PCIeTransportLink::create(device_identifier));
+    return adopt_lock_ref_if_nonnull(new Input(move(pci_transport_link))).release_nonnull();
+}
+
+UNMAP_AFTER_INIT ErrorOr<void> Input::initialize_virtio_resources()
+{
+    TRY(Device::initialize_virtio_resources());
+    auto const* cfg = TRY(transport_entity().get_config(VirtIO::ConfigurationType::Device));
+    TRY(negotiate_features([&](auto) { return 0; }));
+
+    transport_entity().config_write8(*cfg, offsetof(VirtIOInputConfig, subsel), 0);
+
+    OwnPtr<KString> name;
+
+    transport_entity().config_write8(*cfg, offsetof(VirtIOInputConfig, select), to_underlying(VirtIOInputConfig::Select::IDName));
+    transport_entity().read_config_atomic([&]() {
+        auto size = transport_entity().config_read8(*cfg, offsetof(VirtIOInputConfig, size));
+        if (size == 0)
+            return;
+
+        VERIFY(size <= sizeof(VirtIOInputConfig::u.string));
+
+        char* name_chars = nullptr;
+        name = MUST(KString::try_create_uninitialized(size, name_chars));
+
+        for (size_t i = 0; i < size; i++)
+            name_chars[i] = static_cast<char>(transport_entity().config_read8(*cfg, offsetof(VirtIOInputConfig, u.string) + i));
+    });
+
+    if (name)
+        dbgln("VirtIO::Input: Device name: {}", name);
+
+    transport_entity().config_write8(*cfg, offsetof(VirtIOInputConfig, select), to_underlying(VirtIOInputConfig::Select::AbsInfo));
+    transport_entity().read_config_atomic([&]() {
+        auto size = transport_entity().config_read8(*cfg, offsetof(VirtIOInputConfig, size));
+        if (size == 0)
+            return;
+
+        VERIFY(size == sizeof(VirtIOInputConfig::u.abs));
+
+        m_abs_min = bit_cast<LittleEndian<u32>>(transport_entity().config_read32(*cfg, offsetof(VirtIOInputConfig, u.abs.min)));
+        m_abs_max = bit_cast<LittleEndian<u32>>(transport_entity().config_read32(*cfg, offsetof(VirtIOInputConfig, u.abs.max)));
+    });
+
+    TRY(setup_queues(2));
+    finish_init();
+
+    auto& event_queue = get_queue(EVENTQ);
+    SpinlockLocker event_queue_lock(event_queue.lock());
+
+    m_event_buffer_region = TRY(MM.allocate_contiguous_kernel_region(TRY(Memory::page_round_up(event_queue.size() * sizeof(VirtIOInputEvent))), "VirtIO::Input eventq"sv, Memory::Region::Access::ReadWrite));
+
+    QueueChain event_queue_chain(event_queue);
+
+    for (size_t queue_idx = 0; queue_idx < event_queue.size(); ++queue_idx) {
+        auto buffer_start = m_event_buffer_region->physical_page(0)->paddr().offset(queue_idx * sizeof(VirtIOInputEvent));
+        auto did_add_buffer = event_queue_chain.add_buffer_to_chain(buffer_start, sizeof(VirtIOInputEvent), BufferType::DeviceWritable);
+        VERIFY(did_add_buffer);
+        supply_chain_and_notify(EVENTQ, event_queue_chain);
+    }
+
+    HIDManagement::the().attach_standalone_hid_device(*m_mouse_device);
+    HIDManagement::the().attach_standalone_hid_device(*m_keyboard_device);
+
+    return {};
+}
+
+UNMAP_AFTER_INIT Input::Input(NonnullOwnPtr<TransportEntity> transport_entity)
+    : VirtIO::Device(move(transport_entity))
+    , m_mouse_device(MouseDevice::try_to_initialize().release_value_but_fixme_should_propagate_errors())
+    , m_keyboard_device(KeyboardDevice::try_to_initialize().release_value_but_fixme_should_propagate_errors())
+{
+}
+
+ErrorOr<void> Input::handle_device_config_change()
+{
+    return {};
+}
+
+void Input::handle_queue_update(u16 queue_index)
+{
+    VERIFY(queue_index == EVENTQ);
+
+    auto& queue = get_queue(EVENTQ);
+    SpinlockLocker queue_lock(queue.lock());
+
+    size_t used;
+    QueueChain popped_chain = queue.pop_used_buffer_chain(used);
+    while (!popped_chain.is_empty()) {
+        popped_chain.for_each([this](PhysicalAddress paddr, size_t) {
+            size_t offset = paddr.get() - m_event_buffer_region->physical_page(0)->paddr().get();
+            auto const& event = *reinterpret_cast<VirtIOInputEvent const*>(m_event_buffer_region->vaddr().offset(offset).as_ptr());
+            handle_event(event);
+        });
+
+        supply_chain_and_notify(EVENTQ, popped_chain);
+        popped_chain = queue.pop_used_buffer_chain(used);
+    }
+}
+
+void Input::handle_event(VirtIOInputEvent const& event)
+{
+    // TODO: Set lock key LEDs
+
+    switch (event.type) {
+    case EV_SYN:
+        switch (event.code) {
+        case SYN_REPORT:
+            m_mouse_device->handle_mouse_packet_input_event(m_current_mouse_packet);
+
+            // Don't reset the x/y values if the last event was an absolute event, as otherwise the mouse would jump to the top left corner on events other than mouse movement.
+            if (m_current_mouse_packet.is_relative) {
+                m_current_mouse_packet.x = 0;
+                m_current_mouse_packet.y = 0;
+            }
+
+            m_current_mouse_packet.z = 0;
+            m_current_mouse_packet.w = 0;
+
+            break;
+
+        default:
+            dbgln_if(VIRTIO_DEBUG, "VirtIO::Input: Unknown EV_SYN event code: {:#x}", event.code);
+            break;
+        }
+        break;
+
+    case EV_KEY:
+        switch (event.code) {
+        case BTN_LEFT:
+            if (event.value == 1)
+                m_current_mouse_packet.buttons |= MousePacket::Button::LeftButton;
+            else
+                m_current_mouse_packet.buttons &= ~MousePacket::Button::LeftButton;
+            break;
+
+        case BTN_RIGHT:
+            if (event.value == 1)
+                m_current_mouse_packet.buttons |= MousePacket::Button::RightButton;
+            else
+                m_current_mouse_packet.buttons &= ~MousePacket::Button::RightButton;
+            break;
+
+        case BTN_MIDDLE:
+            if (event.value == 1)
+                m_current_mouse_packet.buttons |= MousePacket::Button::MiddleButton;
+            else
+                m_current_mouse_packet.buttons &= ~MousePacket::Button::MiddleButton;
+            break;
+
+        default:
+            // NOTE: We only supply entropy from the keyboard device, as each MouseDevice already has a EntropySource attached to it.
+            m_entropy_source.add_random_event(event.code);
+
+            m_keyboard_device->update_modifier(Mod_Keypad, false);
+
+            RawKeyEvent raw_key_event;
+            raw_key_event.is_press_down = event.value == 1;
+            raw_key_event.scancode = event.code;
+
+            switch (event.code) {
+            case KEY_LEFTALT:
+                m_keyboard_device->update_modifier(Mod_Alt, raw_key_event.is_press());
+                break;
+
+            case KEY_LEFTCTRL:
+            case KEY_RIGHTCTRL:
+                m_keyboard_device->update_modifier(Mod_Ctrl, raw_key_event.is_press());
+                break;
+
+            case KEY_LEFTSHIFT:
+            case KEY_RIGHTSHIFT:
+                m_keyboard_device->update_modifier(Mod_Shift, raw_key_event.is_press());
+                break;
+
+            case KEY_LEFTMETA:
+            case KEY_RIGHTMETA:
+                m_keyboard_device->update_modifier(Mod_Super, raw_key_event.is_press());
+                break;
+
+            case KEY_RIGHTALT:
+                m_keyboard_device->update_modifier(Mod_AltGr, raw_key_event.is_press());
+                break;
+
+            default:
+                break;
+            }
+
+            if ((event.code >= KEY_KP7 && event.code <= KEY_KPDOT)
+                || event.code == KEY_KPASTERISK
+                || event.code == KEY_KPENTER
+                || event.code == KEY_KPEQUAL
+                || event.code == KEY_KPSLASH) {
+                m_keyboard_device->update_modifier(Mod_Keypad, true);
+            }
+
+            // The shift key only applies to small key codes, so only use the shifted key map if the event code is small enough.
+            bool use_shifted_key_map = (m_keyboard_device->modifiers() & Mod_Shift) != 0 && event.code < shifted_evdev_key_map.size();
+
+            auto key_map = use_shifted_key_map ? Span<KeyCodeEntry const>(shifted_evdev_key_map) : Span<KeyCodeEntry const>(unshifted_evdev_key_map);
+
+            if (event.code >= key_map.size()) {
+                dbgln_if(VIRTIO_DEBUG, "VirtIO::Input: Unknown EV_KEY event code: {:#x}", event.code);
+                return;
+            }
+
+            raw_key_event.code_entry = key_map[event.code];
+
+            KeyEvent key_event {
+                .key = raw_key_event.code_entry.key_code,
+                .map_entry_index = raw_key_event.code_entry.map_entry_index,
+                .scancode = raw_key_event.scancode,
+                .flags = raw_key_event.is_press() ? static_cast<u8>(Is_Press) : static_cast<u8>(0),
+            };
+
+            if (m_keyboard_device->num_lock_on() && (m_keyboard_device->modifiers() & Mod_Shift) == 0) {
+                if (key_event.scancode >= KEY_KP7 && raw_key_event.scancode <= KEY_KPDOT) {
+                    auto index = key_event.scancode - KEY_KP7;
+                    static constexpr auto numpad_key_map = to_array<KeyCodeEntry>({
+                        { Key_7, 0x08 },
+                        { Key_8, 0x09 },
+                        { Key_9, 0x0a },
+                        { Key_Invalid, 0xff },
+                        { Key_4, 0x05 },
+                        { Key_5, 0x06 },
+                        { Key_6, 0x07 },
+                        { Key_Invalid, 0xff },
+                        { Key_1, 0x02 },
+                        { Key_2, 0x03 },
+                        { Key_3, 0x04 },
+                        { Key_0, 0x0b },
+                        { Key_Period, 0x34 },
+                    });
+
+                    if (numpad_key_map[index].key_code != Key_Invalid) {
+                        key_event.key = numpad_key_map[index].key_code;
+                        key_event.map_entry_index = numpad_key_map[index].map_entry_index;
+                    }
+                }
+            }
+
+            m_keyboard_device->handle_input_event(key_event);
+            break;
+        }
+        break;
+
+    case EV_REL: {
+        if (event.code == REL_X) {
+            m_current_mouse_packet.is_relative = true;
+            m_current_mouse_packet.x = static_cast<int>(event.value);
+        } else if (event.code == REL_Y) {
+            m_current_mouse_packet.is_relative = true;
+            m_current_mouse_packet.y = -static_cast<int>(event.value);
+        } else if (event.code == REL_WHEEL) {
+            m_current_mouse_packet.z = -static_cast<int>(event.value);
+        } else {
+            dbgln_if(VIRTIO_DEBUG, "VirtIO::Input: Unknown EV_REL event code: {:#x}", event.code);
+        }
+        break;
+    }
+
+    case EV_ABS: {
+        if (event.code == ABS_X) {
+            m_current_mouse_packet.is_relative = false;
+            m_current_mouse_packet.x = static_cast<int>((event.value - m_abs_min) * 0xffff / (m_abs_max - m_abs_min));
+        } else if (event.code == ABS_Y) {
+            m_current_mouse_packet.is_relative = false;
+            m_current_mouse_packet.y = static_cast<int>((event.value - m_abs_min) * 0xffff / (m_abs_max - m_abs_min));
+        } else {
+            dbgln_if(VIRTIO_DEBUG, "VirtIO::Input: Unknown EV_ABS event code: {:#x}", event.code);
+        }
+        break;
+    }
+
+    default:
+        dbgln_if(VIRTIO_DEBUG, "VirtIO::Input: Unknown event type: {:#x}", event.type);
+        break;
+    }
+}
+
+}

Kernel/Devices/HID/VirtIO/Input.h

@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2024, Sönke Holz <sholz8530@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/AtomicRefCounted.h>
+#include <Kernel/Bus/VirtIO/Device.h>
+#include <Kernel/Devices/CharacterDevice.h>
+#include <Kernel/Devices/HID/KeyboardDevice.h>
+#include <Kernel/Devices/HID/MouseDevice.h>
+#include <Kernel/Memory/RingBuffer.h>
+#include <Kernel/Security/Random.h>
+
+namespace Kernel::VirtIO {
+
+struct VirtIOInputEvent;
+
+class Input final
+    : public AtomicRefCounted<Input>
+    , public VirtIO::Device {
+public:
+    static NonnullLockRefPtr<Input> must_create_for_pci_instance(PCI::DeviceIdentifier const&);
+    ~Input() override = default;
+
+    ErrorOr<void> initialize_virtio_resources() override;
+
+private:
+    static constexpr u16 EVENTQ = 0;
+    static constexpr u16 STATUSQ = 1;
+
+    StringView class_name() const override { return "VirtIOInput"sv; }
+    explicit Input(NonnullOwnPtr<TransportEntity>);
+    ErrorOr<void> handle_device_config_change() override;
+    void handle_queue_update(u16 queue_index) override;
+
+    void handle_event(VirtIOInputEvent const&);
+
+    OwnPtr<Memory::Region> m_event_buffer_region;
+
+    NonnullRefPtr<MouseDevice> m_mouse_device;
+    MousePacket m_current_mouse_packet;
+
+    NonnullRefPtr<KeyboardDevice> m_keyboard_device;
+
+    EntropySource m_entropy_source;
+
+    u32 m_abs_min { 0 };
+    u32 m_abs_max { 0xffff };
+};
+
+}

Meta/check-style.py

@@ -75,6 +75,8 @@ def should_check_file(filename):
         return False
     if filename.startswith('Base/'):
         return False
+    if filename == 'Kernel/Devices/HID/VirtIO/EvDevDefinitions.h':
+        return False
     if filename == 'Kernel/FileSystem/Ext2FS/Definitions.h':
         return False
     if filename == 'Kernel/FileSystem/FUSE/Definitions.h':

Meta/lint-clang-format.sh

@@ -12,6 +12,7 @@ if [ "$#" -eq "1" ]; then
             '*.h' \
             '*.mm' \
             ':!:Base' \
+            ':!:Kernel/Devices/HID/VirtIO/EvDevDefinitions.h' \
             ':!:Kernel/FileSystem/Ext2FS/Definitions.h' \
             ':!:Userland/Libraries/LibCodeComprehension/Cpp/Tests/*' \
             ':!:Userland/Libraries/LibCpp/Tests/parser/*' \