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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [drivers/] [char/] [keyb_m68k.c] - Blame information for rev 1777

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/*
 * linux/drivers/char/keyboard.c
 *
 * Keyboard driver for Linux v0.99 using Latin-1.
 *
 * Written for linux by Johan Myreen as a translation from
 * the assembly version by Linus (with diacriticals added)
 *
 * Some additional features added by Christoph Niemann (ChN), March 1993
 *
 * Loadable keymaps by Risto Kankkunen, May 1993
 *
 * Diacriticals redone & other small changes, aeb@cwi.nl, June 1993
 * Added decr/incr_console, dynamic keymaps, Unicode support,
 * dynamic function/string keys, led setting,  Sept 1994
 * `Sticky' modifier keys, 951006.
 *
 */
 
/*
 * modified to provide 'generic' keyboard support by Hamish Macdonald
 */
 
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/mm.h>
#include <linux/random.h>
 
#include <asm/bitops.h>
#include <asm/machdep.h>
 
#include "kbd_kern.h"
#include "diacr.h"
#include "vt_kern.h"
 
#define SIZE(x) (sizeof(x)/sizeof((x)[0]))
 
#define KBD_REPORT_ERR
#define KBD_REPORT_UNKN
/* #define KBD_IS_FOCUS_9000 */
 
#ifndef KBD_DEFMODE
#define KBD_DEFMODE ((1 << VC_REPEAT) | (1 << VC_META))
#endif
 
#ifndef KBD_DEFLEDS
/*
 * Some laptops take the 789uiojklm,. keys as number pad when NumLock
 * is on. This seems a good reason to start with NumLock off.
 */
#define KBD_DEFLEDS 0
#endif
 
#ifndef KBD_DEFLOCK
#define KBD_DEFLOCK 0
#endif
 
/*
 * The default IO slowdown is doing 'inb()'s from 0x61, which should be
 * safe. But as that is the keyboard controller chip address, we do our
 * slowdowns here by doing short jumps: the keyboard controller should
 * be able to keep up
 */
#define REALLY_SLOW_IO
#define SLOW_IO_BY_JUMPING
#include <asm/io.h>
#include <asm/system.h>
 
extern void poke_blanked_console(void);
extern void ctrl_alt_del(void);
extern void reset_vc(unsigned int new_console);
extern void scrollback(int);
extern void scrollfront(int);
extern int vc_cons_allocated(unsigned int);
 
unsigned char kbd_read_mask = 0x01;     /* modified by psaux.c */
 
/*
 * global state includes the following, and various static variables
 * in this module: prev_scancode, shift_state, diacr, npadch, dead_key_next.
 * (last_console is now a global variable)
 */
 
/* shift state counters.. */
static unsigned char k_down[NR_SHIFT] = {0, };
/* keyboard key bitmap */
#define BITS_PER_LONG (8*sizeof(unsigned long))
static unsigned long key_down[256/BITS_PER_LONG] = { 0, };
 
static int dead_key_next = 0;
/*
 * In order to retrieve the shift_state (for the mouse server), either
 * the variable must be global, or a new procedure must be created to
 * return the value. I chose the former way.
 */
/*static*/ int shift_state = 0;
static int npadch = -1;                 /* -1 or number assembled on pad */
static unsigned char diacr = 0;
static char rep = 0;                     /* flag telling character repeat */
struct kbd_struct kbd_table[MAX_NR_CONSOLES];
static struct tty_struct **ttytab;
static struct kbd_struct *kbd = kbd_table;
static struct tty_struct *tty = NULL;
 
extern void compute_shiftstate(void);
 
typedef void (*k_hand)(unsigned char value, char up_flag);
typedef void (k_handfn)(unsigned char value, char up_flag);
 
static k_handfn
        do_self, do_fn, do_spec, do_pad, do_dead, do_cons, do_cur, do_shift,
        do_meta, do_ascii, do_lock, do_lowercase, do_slock, do_ignore;
 
static k_hand key_handler[16] = {
        do_self, do_fn, do_spec, do_pad, do_dead, do_cons, do_cur, do_shift,
        do_meta, do_ascii, do_lock, do_lowercase, do_slock,
        do_ignore, do_ignore, do_ignore
};
 
typedef void (*void_fnp)(void);
typedef void (void_fn)(void);
 
static void_fn do_null, enter, show_ptregs, send_intr, lastcons, caps_toggle,
        num, hold, scroll_forw, scroll_back, boot_it, caps_on, compose,
        SAK, decr_console, incr_console, spawn_console, bare_num;
 
static void_fnp spec_fn_table[] = {
        do_null,        enter,          show_ptregs,    show_mem,
        show_state,     send_intr,      lastcons,       caps_toggle,
        num,            hold,           scroll_forw,    scroll_back,
        boot_it,        caps_on,        compose,        SAK,
        decr_console,   incr_console,   spawn_console,  bare_num
};
 
/* maximum values each key_handler can handle */
const int max_vals[] = {
        255, SIZE(func_table) - 1, SIZE(spec_fn_table) - 1, NR_PAD - 1,
        NR_DEAD - 1, 255, 3, NR_SHIFT - 1,
        255, NR_ASCII - 1, NR_LOCK - 1, 255,
        NR_LOCK - 1
};
 
const int NR_TYPES = SIZE(max_vals);
 
static void put_queue(int);
static unsigned char handle_diacr(unsigned char);
 
/*
 * Many other routines do put_queue, but I think either
 * they produce ASCII, or they produce some user-assigned
 * string, and in both cases we might assume that it is
 * in utf-8 already.
 */
void to_utf8(ushort c) {
    if (c < 0x80)
        put_queue(c);                   /*  0*******  */
    else if (c < 0x800) {
        put_queue(0xc0 | (c >> 6));     /*  110***** 10******  */
        put_queue(0x80 | (c & 0x3f));
    } else {
        put_queue(0xe0 | (c >> 12));    /*  1110**** 10****** 10******  */
        put_queue(0x80 | ((c >> 6) & 0x3f));
        put_queue(0x80 | (c & 0x3f));
    }
    /* UTF-8 is defined for words of up to 31 bits,
       but we need only 16 bits here */
}
 
void process_keycode (int keycode)
{
        char up_flag;                            /* 0 or 0200 */
        char raw_mode;
 
        do_poke_blanked_console = 1;
        mark_bh(KEYBOARD_BH);
        add_keyboard_randomness(keycode);
 
        tty = ttytab[fg_console];
        kbd = kbd_table + fg_console;
        if ((raw_mode = (kbd->kbdmode == VC_RAW))) {
                put_queue(keycode);
                /* we do not return yet, because we want to maintain
                   the key_down array, so that we have the correct
                   values when finishing RAW mode or when changing VT's */
        }
 
        /*
         * At this point the variable `keycode' contains the keycode.
         * Note: the keycode must not be 0.
         * We keep track of the up/down status of the key, and
         * return the keycode if in MEDIUMRAW mode.
         */
 
        up_flag = (keycode & 0200);
        keycode &= 0x7f;
        if (up_flag) {
                rep = 0;
                if(!clear_bit(keycode, key_down)) {
                    /* unexpected, but this can happen:
                       maybe this was a key release for a FOCUS 9000
                       PF key; if we want to see it, we have to clear
                       up_flag */
#ifndef __mc68000__
                    if (keycode >= SC_LIM || keycode == 85)
                      up_flag = 0;
#endif
                }
        } else
                rep = set_bit(keycode, key_down);
 
        if (raw_mode)
                return;
 
        if (kbd->kbdmode == VC_MEDIUMRAW) {
                /* soon keycodes will require more than one byte */
                put_queue(keycode + up_flag);
                return;
        }
 
        /*
         * Small change in philosophy: earlier we defined repetition by
         *       rep = keycode == prev_keycode;
         *       prev_keycode = keycode;
         * but now by the fact that the depressed key was down already.
         * Does this ever make a difference? Yes.
         */
 
        /*
         *  Repeat a key only if the input buffers are empty or the
         *  characters get echoed locally. This makes key repeat usable
         *  with slow applications and under heavy loads.
         */
        if (!rep ||
            (vc_kbd_mode(kbd,VC_REPEAT) && tty &&
             (L_ECHO(tty) || (tty->driver.chars_in_buffer(tty) == 0)))) {
                u_short keysym;
                u_char type;
 
                /* the XOR below used to be an OR */
                int shift_final = shift_state ^ kbd->lockstate ^ kbd->slockstate;
                ushort *key_map = key_maps[shift_final];
 
                if (key_map != NULL) {
                        keysym = key_map[keycode];
                        type = KTYP(keysym);
 
                        if (type >= 0xf0) {
                            type -= 0xf0;
                            if (type == KT_LETTER) {
                                type = KT_LATIN;
                                if (vc_kbd_led(kbd, VC_CAPSLOCK)) {
                                    key_map = key_maps[shift_final ^ (1<<KG_SHIFT)];
                                    if (key_map)
                                      keysym = key_map[keycode];
                                }
                            }
                            (*key_handler[type])(keysym & 0xff, up_flag);
                            if (type != KT_SLOCK)
                              kbd->slockstate = 0;
                        } else {
                            /* maybe only if (kbd->kbdmode == VC_UNICODE) ? */
                            if (!up_flag)
                              to_utf8(keysym);
                        }
                } else {
                        /* maybe beep? */
                        /* we have at least to update shift_state */
#if 1                   /* how? two almost equivalent choices follow */
                        compute_shiftstate();
#else
                        keysym = U(plain_map[keycode]);
                        type = KTYP(keysym);
                        if (type == KT_SHIFT)
                          (*key_handler[type])(keysym & 0xff, up_flag);
#endif
                }
        }
}
 
static void put_queue(int ch)
{
        wake_up(&keypress_wait);
        if (tty) {
                tty_insert_flip_char(tty, ch, 0);
                tty_schedule_flip(tty);
        }
}
 
static void puts_queue(char *cp)
{
        wake_up(&keypress_wait);
        if (!tty)
                return;
 
        while (*cp) {
                tty_insert_flip_char(tty, *cp, 0);
                cp++;
        }
        tty_schedule_flip(tty);
}
 
static void applkey(int key, char mode)
{
        static char buf[] = { 0x1b, 'O', 0x00, 0x00 };
 
        buf[1] = (mode ? 'O' : '[');
        buf[2] = key;
        puts_queue(buf);
}
 
static void enter(void)
{
        put_queue(13);
        if (vc_kbd_mode(kbd,VC_CRLF))
                put_queue(10);
}
 
static void caps_toggle(void)
{
        if (rep)
                return;
        chg_vc_kbd_led(kbd, VC_CAPSLOCK);
}
 
static void caps_on(void)
{
        if (rep)
                return;
        set_vc_kbd_led(kbd, VC_CAPSLOCK);
}
 
struct pt_regs *pt_regs;
 
static void show_ptregs(void)
{
        if (pt_regs)
                show_regs(pt_regs);
        return;
}
 
static void hold(void)
{
        if (rep || !tty)
                return;
 
        /*
         * Note: SCROLLOCK will be set (cleared) by stop_tty (start_tty);
         * these routines are also activated by ^S/^Q.
         * (And SCROLLOCK can also be set by the ioctl KDSKBLED.)
         */
        if (tty->stopped)
                start_tty(tty);
        else
                stop_tty(tty);
}
 
static void num(void)
{
        if (vc_kbd_mode(kbd,VC_APPLIC))
                applkey('P', 1);
        else
                bare_num();
}
 
/*
 * Bind this to Shift-NumLock if you work in application keypad mode
 * but want to be able to change the NumLock flag.
 * Bind this to NumLock if you prefer that the NumLock key always
 * changes the NumLock flag.
 */
static void bare_num(void)
{
        if (!rep)
                chg_vc_kbd_led(kbd,VC_NUMLOCK);
}
 
static void lastcons(void)
{
        /* switch to the last used console, ChN */
        set_console(last_console);
}
 
static void decr_console(void)
{
        int i;
 
        for (i = fg_console-1; i != fg_console; i--) {
                if (i == -1)
                        i = MAX_NR_CONSOLES-1;
                if (vc_cons_allocated(i))
                        break;
        }
        set_console(i);
}
 
static void incr_console(void)
{
        int i;
 
        for (i = fg_console+1; i != fg_console; i++) {
                if (i == MAX_NR_CONSOLES)
                        i = 0;
                if (vc_cons_allocated(i))
                        break;
        }
        set_console(i);
}
 
static void send_intr(void)
{
        if (!tty)
                return;
        tty_insert_flip_char(tty, 0, TTY_BREAK);
        tty_schedule_flip(tty);
}
 
static void scroll_forw(void)
{
        scrollfront(0);
}
 
static void scroll_back(void)
{
        scrollback(0);
}
 
static void boot_it(void)
{
        ctrl_alt_del();
}
 
static void compose(void)
{
        dead_key_next = 1;
}
 
int spawnpid, spawnsig;
 
static void spawn_console(void)
{
        if (spawnpid)
           if(kill_proc(spawnpid, spawnsig, 1))
             spawnpid = 0;
}
 
static void SAK(void)
{
        do_SAK(tty);
#if 0
        /*
         * Need to fix SAK handling to fix up RAW/MEDIUM_RAW and
         * vt_cons modes before we can enable RAW/MEDIUM_RAW SAK
         * handling.
         *
         * We should do this some day --- the whole point of a secure
         * attention key is that it should be guaranteed to always
         * work.
         */
        reset_vc(fg_console);
        do_unblank_screen();    /* not in interrupt routine? */
#endif
}
 
static void do_ignore(unsigned char value, char up_flag)
{
}
 
static void do_null()
{
        compute_shiftstate();
}
 
static void do_spec(unsigned char value, char up_flag)
{
        if (up_flag)
                return;
        if (value >= SIZE(spec_fn_table))
                return;
        spec_fn_table[value]();
}
 
static void do_lowercase(unsigned char value, char up_flag)
{
        printk("keyboard.c: do_lowercase was called - impossible\n");
}
 
static void do_self(unsigned char value, char up_flag)
{
        if (up_flag)
                return;         /* no action, if this is a key release */
 
        if (diacr)
                value = handle_diacr(value);
 
        if (dead_key_next) {
                dead_key_next = 0;
                diacr = value;
                return;
        }
 
        put_queue(value);
}
 
#define A_GRAVE  '`'
#define A_ACUTE  '\''
#define A_CFLEX  '^'
#define A_TILDE  '~'
#define A_DIAER  '"'
#define A_CEDIL  ','
static unsigned char ret_diacr[NR_DEAD] =
        {A_GRAVE, A_ACUTE, A_CFLEX, A_TILDE, A_DIAER, A_CEDIL };
 
/* If a dead key pressed twice, output a character corresponding to it, */
/* otherwise just remember the dead key.                                */
 
static void do_dead(unsigned char value, char up_flag)
{
        if (up_flag)
                return;
 
        value = ret_diacr[value];
        if (diacr == value) {   /* pressed twice */
                diacr = 0;
                put_queue(value);
                return;
        }
        diacr = value;
}
 
 
/* If space is pressed, return the character corresponding the pending  */
/* dead key, otherwise try to combine the two.                          */
 
unsigned char handle_diacr(unsigned char ch)
{
        int d = diacr;
        int i;
 
        diacr = 0;
        if (ch == ' ')
                return d;
 
        for (i = 0; i < accent_table_size; i++) {
                if (accent_table[i].diacr == d && accent_table[i].base == ch)
                        return accent_table[i].result;
        }
 
        put_queue(d);
        return ch;
}
 
static void do_cons(unsigned char value, char up_flag)
{
        if (up_flag)
                return;
        set_console(value);
}
 
static void do_fn(unsigned char value, char up_flag)
{
        if (up_flag)
                return;
        if (value < SIZE(func_table)) {
                if (func_table[value])
                        puts_queue(func_table[value]);
        } else
                printk("do_fn called with value=%d\n", value);
}
 
static void do_pad(unsigned char value, char up_flag)
{
        static const char *pad_chars = "0123456789+-*/\015,.?";
        static const char *app_map = "pqrstuvwxylSRQMnn?";
 
        if (up_flag)
                return;         /* no action, if this is a key release */
 
        /* kludge... shift forces cursor/number keys */
        if (vc_kbd_mode(kbd,VC_APPLIC) && !k_down[KG_SHIFT]) {
                applkey(app_map[value], 1);
                return;
        }
 
        if (!vc_kbd_led(kbd,VC_NUMLOCK))
                switch (value) {
                        case KVAL(K_PCOMMA):
                        case KVAL(K_PDOT):
                                do_fn(KVAL(K_REMOVE), 0);
                                return;
                        case KVAL(K_P0):
                                do_fn(KVAL(K_INSERT), 0);
                                return;
                        case KVAL(K_P1):
                                do_fn(KVAL(K_SELECT), 0);
                                return;
                        case KVAL(K_P2):
                                do_cur(KVAL(K_DOWN), 0);
                                return;
                        case KVAL(K_P3):
                                do_fn(KVAL(K_PGDN), 0);
                                return;
                        case KVAL(K_P4):
                                do_cur(KVAL(K_LEFT), 0);
                                return;
                        case KVAL(K_P6):
                                do_cur(KVAL(K_RIGHT), 0);
                                return;
                        case KVAL(K_P7):
                                do_fn(KVAL(K_FIND), 0);
                                return;
                        case KVAL(K_P8):
                                do_cur(KVAL(K_UP), 0);
                                return;
                        case KVAL(K_P9):
                                do_fn(KVAL(K_PGUP), 0);
                                return;
                        case KVAL(K_P5):
                                applkey('G', vc_kbd_mode(kbd, VC_APPLIC));
                                return;
                }
 
        put_queue(pad_chars[value]);
        if (value == KVAL(K_PENTER) && vc_kbd_mode(kbd, VC_CRLF))
                put_queue(10);
}
 
static void do_cur(unsigned char value, char up_flag)
{
        static const char *cur_chars = "BDCA";
        if (up_flag)
                return;
 
        applkey(cur_chars[value], vc_kbd_mode(kbd,VC_CKMODE));
}
 
static void do_shift(unsigned char value, char up_flag)
{
        int old_state = shift_state;
 
        if (rep)
                return;
 
        /* Mimic typewriter:
           a CapsShift key acts like Shift but undoes CapsLock */
        if (value == KVAL(K_CAPSSHIFT)) {
                value = KVAL(K_SHIFT);
                if (!up_flag)
                        clr_vc_kbd_led(kbd, VC_CAPSLOCK);
        }
 
        if (up_flag) {
                /* handle the case that two shift or control
                   keys are depressed simultaneously */
                if (k_down[value])
                        k_down[value]--;
        } else
                k_down[value]++;
 
        if (k_down[value])
                shift_state |= (1 << value);
        else
                shift_state &= ~ (1 << value);
 
        /* kludge */
        if (up_flag && shift_state != old_state && npadch != -1) {
                if (kbd->kbdmode == VC_UNICODE)
                  to_utf8(npadch & 0xffff);
                else
                  put_queue(npadch & 0xff);
                npadch = -1;
        }
}
 
/* called after returning from RAW mode or when changing consoles -
   recompute k_down[] and shift_state from key_down[] */
/* maybe called when keymap is undefined, so that shiftkey release is seen */
void compute_shiftstate(void)
{
        int i, j, k, sym, val;
 
        shift_state = 0;
        for(i=0; i < SIZE(k_down); i++)
          k_down[i] = 0;
 
        for(i=0; i < SIZE(key_down); i++)
          if(key_down[i]) {     /* skip this word if not a single bit on */
            k = i*BITS_PER_LONG;
            for(j=0; j<BITS_PER_LONG; j++,k++)
              if(test_bit(k, key_down)) {
                sym = U(plain_map[k]);
                if(KTYP(sym) == KT_SHIFT) {
                  val = KVAL(sym);
                  if (val == KVAL(K_CAPSSHIFT))
                    val = KVAL(K_SHIFT);
                  k_down[val]++;
                  shift_state |= (1<<val);
                }
              }
          }
}
 
static void do_meta(unsigned char value, char up_flag)
{
        if (up_flag)
                return;
 
        if (vc_kbd_mode(kbd, VC_META)) {
                put_queue('\033');
                put_queue(value);
        } else
                put_queue(value | 0x80);
}
 
static void do_ascii(unsigned char value, char up_flag)
{
        int base;
 
        if (up_flag)
                return;
 
        if (value < 10)    /* decimal input of code, while Alt depressed */
            base = 10;
        else {       /* hexadecimal input of code, while AltGr depressed */
            value -= 10;
            base = 16;
        }
 
        if (npadch == -1)
                npadch = value;
        else
                npadch = npadch * base + value;
}
 
static void do_lock(unsigned char value, char up_flag)
{
        if (up_flag || rep)
                return;
        chg_vc_kbd_lock(kbd, value);
}
 
static void do_slock(unsigned char value, char up_flag)
{
        if (up_flag || rep)
                return;
        chg_vc_kbd_slock(kbd, value);
}
 
/*
 * The leds display either (i) the status of NumLock, CapsLock, ScrollLock,
 * or (ii) whatever pattern of lights people want to show using KDSETLED,
 * or (iii) specified bits of specified words in kernel memory.
 */
 
static unsigned char ledstate = 0xff; /* undefined */
static unsigned char ledioctl;
 
unsigned char getledstate(void) {
    return ledstate;
}
 
void setledstate(struct kbd_struct *kbd, unsigned int led) {
    if (!(led & ~7)) {
        ledioctl = led;
        kbd->ledmode = LED_SHOW_IOCTL;
    } else
        kbd->ledmode = LED_SHOW_FLAGS;
    set_leds();
}
 
static struct ledptr {
    unsigned int *addr;
    unsigned int mask;
    unsigned char valid:1;
} ledptrs[3];
 
void register_leds(int console, unsigned int led,
                   unsigned int *addr, unsigned int mask) {
    struct kbd_struct *kbd = kbd_table + console;
    if (led < 3) {
        ledptrs[led].addr = addr;
        ledptrs[led].mask = mask;
        ledptrs[led].valid = 1;
        kbd->ledmode = LED_SHOW_MEM;
    } else
        kbd->ledmode = LED_SHOW_FLAGS;
}
 
static inline unsigned char getleds(void){
    struct kbd_struct *kbd = kbd_table + fg_console;
    unsigned char leds;
 
    if (kbd->ledmode == LED_SHOW_IOCTL)
      return ledioctl;
    leds = kbd->ledflagstate;
    if (kbd->ledmode == LED_SHOW_MEM) {
        if (ledptrs[0].valid) {
            if (*ledptrs[0].addr & ledptrs[0].mask)
              leds |= 1;
            else
              leds &= ~1;
        }
        if (ledptrs[1].valid) {
            if (*ledptrs[1].addr & ledptrs[1].mask)
              leds |= 2;
            else
              leds &= ~2;
        }
        if (ledptrs[2].valid) {
            if (*ledptrs[2].addr & ledptrs[2].mask)
              leds |= 4;
            else
              leds &= ~4;
        }
    }
    return leds;
}
 
/*
 * This routine is the bottom half of the keyboard interrupt
 * routine, and runs with all interrupts enabled. It does
 * console changing, led setting and copy_to_cooked, which can
 * take a reasonably long time.
 *
 * Aside from timing (which isn't really that important for
 * keyboard interrupts as they happen often), using the software
 * interrupt routines for this thing allows us to easily mask
 * this when we don't want any of the above to happen. Not yet
 * used, but this allows for easy and efficient race-condition
 * prevention later on.
 */
static void kbd_bh(void)
{
        unsigned char leds = getleds();
 
        if (leds != ledstate) {
                ledstate = leds;
                if (mach_kbd_leds)
                        mach_kbd_leds(leds);
        }
}
 
int kbd_init(void)
{
        int i;
        struct kbd_struct kbd0;
        extern struct tty_driver console_driver;
 
        kbd0.ledflagstate = kbd0.default_ledflagstate = KBD_DEFLEDS;
        kbd0.ledmode = LED_SHOW_FLAGS;
        kbd0.lockstate = KBD_DEFLOCK;
        kbd0.slockstate = 0;
        kbd0.modeflags = KBD_DEFMODE;
        kbd0.kbdmode = VC_XLATE;
 
        for (i = 0 ; i < MAX_NR_CONSOLES ; i++)
                kbd_table[i] = kbd0;
 
        ttytab = console_driver.table;
 
        init_bh(KEYBOARD_BH, kbd_bh);
        mark_bh(KEYBOARD_BH);
 
        mach_keyb_init ();
 
        return 0;
}
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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [drivers/] [char/] [keyb_m68k.c] - Blame information for rev 1777

Line No.	Rev	Author	Line
1	1626	jcastillo	`/*`
2			`* linux/drivers/char/keyboard.c`
3			`*`
4			`* Keyboard driver for Linux v0.99 using Latin-1.`
5			`*`
6			`* Written for linux by Johan Myreen as a translation from`
7			`* the assembly version by Linus (with diacriticals added)`
8			`*`
9			`* Some additional features added by Christoph Niemann (ChN), March 1993`
10			`*`
11			`* Loadable keymaps by Risto Kankkunen, May 1993`
12			`*`
13			`* Diacriticals redone & other small changes, aeb@cwi.nl, June 1993`
14			`* Added decr/incr_console, dynamic keymaps, Unicode support,`
15			`* dynamic function/string keys, led setting, Sept 1994`
16			* `Sticky' modifier keys, 951006.
17			`*`
18			`*/`
19
20			`/*`
21			`* modified to provide 'generic' keyboard support by Hamish Macdonald`
22			`*/`
23
24			`#include <linux/sched.h>`
25			`#include <linux/interrupt.h>`
26			`#include <linux/tty.h>`
27			`#include <linux/tty_flip.h>`
28			`#include <linux/mm.h>`
29			`#include <linux/random.h>`
30
31			`#include <asm/bitops.h>`
32			`#include <asm/machdep.h>`
33
34			`#include "kbd_kern.h"`
35			`#include "diacr.h"`
36			`#include "vt_kern.h"`
37
38			`#define SIZE(x) (sizeof(x)/sizeof((x)[0]))`
39
40			`#define KBD_REPORT_ERR`