Keyboard input routines. More...

#include <core.h>
#include <libc/string.h>
#include <kernel/x86/cpu.h>
#include <kernel/device/keyboard.h>
#include <kernel/interrupt/interrupt.h>

Data Structures
struct	kbstate_t
	Keyboard state. More...

Macros
#define	KB_PORT_DATA 0x60
	Keyboard I/O data port. More...

#define	MAX_BUFSIZ 32
	Keyboard input buffer size. More...

#define	BSP KEY_BACKSPACE

#define	TAB KEY_TAB

#define	ENT KEY_ENTER

#define	ESC KEY_ESCAPE

#define	CTL KEY_CTRL

#define	SHF KEY_SHIFT

#define	ALT KEY_ALT

#define	PSC KEY_PRTSCR

#define	CLK KEY_CAPSLOCK

#define	NLK KEY_NUMLOCK

#define	SLK KEY_SCRLOCK

#define	KIN KEY_INSERT

#define	KEN KEY_END

#define	KDN KEY_DOWN

#define	KPD KEY_PGDN

#define	KLT KEY_LEFT

#define	KCT KEY_CENTER

#define	KRT KEY_RIGHT

#define	KHM KEY_HOME

#define	KUP KEY_UP

#define	KPU KEY_PGUP

#define	KDL KEY_DEL

#define	KMI KEY_MINUS

#define	KPL KEY_PLUS

#define	F_1 KEY_F1

#define	F_2 KEY_F2

#define	F_3 KEY_F3

#define	F_4 KEY_F4

#define	F_5 KEY_F5

#define	F_6 KEY_F6

#define	F_7 KEY_F7

#define	F_8 KEY_F8

#define	F_9 KEY_F9

#define	F10 KEY_F10

#define	F11 KEY_F11

#define	F12 KEY_F12

#define	SES KEY_SCANESC

#define	INV KEY_INVALID

#define	APO '\''

#define	BSL '\\'

Functions
static void	toggle (uint8_t flag)

static void	addkey (uint8_t brk, uint8_t meta, uint8_t code, uint8_t ch)

static void	isr_keyboard (const interrupt_context_t *context)

void	kb_init ()
	Initialize the keyboard so that it can provide input to the kernel. More...

void	kb_setlayout (keylayout_t *layout)
	Install a new keyboard layout. More...

char	kb_getchar ()
	Return the next available character from the keyboard's input buffer. More...

bool	kb_getkey (key_t *key)
	Return the available next key from the keyboard's input buffer. More...

uint8_t	kb_meta ()
	Return the current meta-key bit mask. More...

Variables
static const keylayout_t	ps2_layout
	US English PSC/2 keyboard scan map (default setting) More...

static kbstate_t	state
	Current keyboard state. More...

Detailed Description

Keyboard input routines.

Definition in file keyboard.c.

Data Structure Documentation

struct kbstate

Keyboard state.

Definition at line 108 of file keyboard.c.

Data Fields
keylayout_t	layout	The installed keyboard layout.
uint8_t	meta	Mask of meta keys currently pressed.
uint8_t	buf_head	Index of oldest key in buf.
uint8_t	buf_tail	Index of next empty slot in buf.
atomic_uchar	buf_size	Number of keys in the buf.
key_t	buf[MAX_BUFSIZ]	Buffer holding unconsumed keys.

Macro Definition Documentation

#define KB_PORT_DATA 0x60

Keyboard I/O data port.

Definition at line 17 of file keyboard.c.

Referenced by isr_keyboard().

#define MAX_BUFSIZ 32

Keyboard input buffer size.

Definition at line 20 of file keyboard.c.

Referenced by addkey(), kb_getchar(), and kb_getkey().

#define BSP KEY_BACKSPACE

Definition at line 23 of file keyboard.c.

#define TAB KEY_TAB

Definition at line 24 of file keyboard.c.

#define ENT KEY_ENTER

Definition at line 25 of file keyboard.c.

#define ESC KEY_ESCAPE

Definition at line 26 of file keyboard.c.

#define CTL KEY_CTRL

Definition at line 27 of file keyboard.c.

#define SHF KEY_SHIFT

Definition at line 28 of file keyboard.c.

#define ALT KEY_ALT

Definition at line 29 of file keyboard.c.

#define PSC KEY_PRTSCR

Definition at line 30 of file keyboard.c.

#define CLK KEY_CAPSLOCK

Definition at line 31 of file keyboard.c.

#define NLK KEY_NUMLOCK

Definition at line 32 of file keyboard.c.

#define SLK KEY_SCRLOCK

Definition at line 33 of file keyboard.c.

#define KIN KEY_INSERT

Definition at line 34 of file keyboard.c.

#define KEN KEY_END

Definition at line 35 of file keyboard.c.

#define KDN KEY_DOWN

Definition at line 36 of file keyboard.c.

#define KPD KEY_PGDN

Definition at line 37 of file keyboard.c.

#define KLT KEY_LEFT

Definition at line 38 of file keyboard.c.

#define KCT KEY_CENTER

Definition at line 39 of file keyboard.c.

#define KRT KEY_RIGHT

Definition at line 40 of file keyboard.c.

#define KHM KEY_HOME

Definition at line 41 of file keyboard.c.

#define KUP KEY_UP

Definition at line 42 of file keyboard.c.

#define KPU KEY_PGUP

Definition at line 43 of file keyboard.c.

#define KDL KEY_DEL

Definition at line 44 of file keyboard.c.

#define KMI KEY_MINUS

Definition at line 45 of file keyboard.c.

#define KPL KEY_PLUS

Definition at line 46 of file keyboard.c.

#define F_1 KEY_F1

Definition at line 47 of file keyboard.c.

#define F_2 KEY_F2

Definition at line 48 of file keyboard.c.

#define F_3 KEY_F3

Definition at line 49 of file keyboard.c.

#define F_4 KEY_F4

Definition at line 50 of file keyboard.c.

#define F_5 KEY_F5

Definition at line 51 of file keyboard.c.

#define F_6 KEY_F6

Definition at line 52 of file keyboard.c.

#define F_7 KEY_F7

Definition at line 53 of file keyboard.c.

#define F_8 KEY_F8

Definition at line 54 of file keyboard.c.

#define F_9 KEY_F9

Definition at line 55 of file keyboard.c.

#define F10 KEY_F10

Definition at line 56 of file keyboard.c.

#define F11 KEY_F11

Definition at line 57 of file keyboard.c.

#define F12 KEY_F12

Definition at line 58 of file keyboard.c.

#define SES KEY_SCANESC

Definition at line 59 of file keyboard.c.

#define INV KEY_INVALID

Definition at line 60 of file keyboard.c.

#define APO '\''

Definition at line 61 of file keyboard.c.

#define BSL '\\'

Definition at line 62 of file keyboard.c.

Function Documentation

static void toggle ( uint8_t flag )

inlinestatic

Definition at line 124 of file keyboard.c.

Referenced by isr_keyboard().

static void addkey	(	uint8_t	brk,
		uint8_t	meta,
		uint8_t	code,
		uint8_t	ch
	)

static

Definition at line 133 of file keyboard.c.

Referenced by isr_keyboard().

static void isr_keyboard ( const interrupt_context_t * context )

static

Definition at line 164 of file keyboard.c.

Referenced by kb_init().

void kb_init ( )

Initialize the keyboard so that it can provide input to the kernel.

kb_init installs the default US English PS/2 keyboard layout.

Definition at line 268 of file keyboard.c.

Referenced by kmain().

void kb_setlayout ( keylayout_t * layout )

Install a new keyboard layout.

Parameters

[in] layout The keyboard layout to install.

Definition at line 288 of file keyboard.c.

char kb_getchar ( )

Return the next available character from the keyboard's input buffer.

Returns: The ascii value of the next character in the input buffer, or 0 if there are no characters available.

Definition at line 294 of file keyboard.c.

bool kb_getkey ( key_t * key )

Return the available next key from the keyboard's input buffer.

Parameters

[out] key The key record of the next key in the buffer.

Returns: true if there is a key in the buffer, false otherwise.

Definition at line 318 of file keyboard.c.

Referenced by command_run(), and keycode_run().

uint8_t kb_meta ( )

Return the current meta-key bit mask.

Returns: The meta-key bitmask.

Definition at line 340 of file keyboard.c.

Variable Documentation

const keylayout_t ps2_layout

static

US English PSC/2 keyboard scan map (default setting)

Definition at line 65 of file keyboard.c.

Referenced by kb_init().

kbstate_t state

static

Current keyboard state.

Definition at line 121 of file keyboard.c.

Referenced by addkey(), isr_keyboard(), kb_getchar(), kb_getkey(), kb_init(), kb_meta(), kb_setlayout(), and toggle().

Data Structures

Macros

Functions

Variables

Detailed Description

Data Structure Documentation

Macro Definition Documentation

Function Documentation

Variable Documentation