2 * Written for linux by Johan Myreen as a translation from
3 * the assembly version by Linus (with diacriticals added)
5 * Some additional features added by Christoph Niemann (ChN), March 1993
7 * Loadable keymaps by Risto Kankkunen, May 1993
9 * Diacriticals redone & other small changes, aeb@cwi.nl, June 1993
10 * Added decr/incr_console, dynamic keymaps, Unicode support,
11 * dynamic function/string keys, led setting, Sept 1994
12 * `Sticky' modifier keys, 951006.
14 * 11-11-96: SAK should now work in the raw mode (Martin Mares)
16 * Modified to provide 'generic' keyboard support by Hamish Macdonald
17 * Merge with the m68k keyboard driver and split-off of the PC low-level
18 * parts by Geert Uytterhoeven, May 1997
20 * 27-05-97: Added support for the Magic SysRq Key (Martin Mares)
21 * 30-07-98: Dead keys redone, aeb@cwi.nl.
22 * 21-08-02: Converted to input API, major cleanup. (Vojtech Pavlik)
25 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
27 #include <linux/consolemap.h>
28 #include <linux/module.h>
29 #include <linux/sched.h>
30 #include <linux/tty.h>
31 #include <linux/tty_flip.h>
33 #include <linux/string.h>
34 #include <linux/init.h>
35 #include <linux/slab.h>
37 #include <linux/kbd_kern.h>
38 #include <linux/kbd_diacr.h>
39 #include <linux/vt_kern.h>
40 #include <linux/input.h>
41 #include <linux/reboot.h>
42 #include <linux/notifier.h>
43 #include <linux/jiffies.h>
44 #include <linux/uaccess.h>
46 #include <asm/irq_regs.h>
48 #include <linux/bootsplash.h>
50 extern void ctrl_alt_del(void);
53 * Exported functions/variables
56 #define KBD_DEFMODE ((1 << VC_REPEAT) | (1 << VC_META))
59 * Some laptops take the 789uiojklm,. keys as number pad when NumLock is on.
60 * This seems a good reason to start with NumLock off. On HIL keyboards
61 * of PARISC machines however there is no NumLock key and everyone expects the
62 * keypad to be used for numbers.
65 #if defined(CONFIG_PARISC) && (defined(CONFIG_KEYBOARD_HIL) || defined(CONFIG_KEYBOARD_HIL_OLD))
66 #define KBD_DEFLEDS (1 << VC_NUMLOCK)
78 k_self, k_fn, k_spec, k_pad,\
79 k_dead, k_cons, k_cur, k_shift,\
80 k_meta, k_ascii, k_lock, k_lowercase,\
81 k_slock, k_dead2, k_brl, k_ignore
83 typedef void (k_handler_fn)(struct vc_data *vc, unsigned char value,
85 static k_handler_fn K_HANDLERS;
86 static k_handler_fn *k_handler[16] = { K_HANDLERS };
89 fn_null, fn_enter, fn_show_ptregs, fn_show_mem,\
90 fn_show_state, fn_send_intr, fn_lastcons, fn_caps_toggle,\
91 fn_num, fn_hold, fn_scroll_forw, fn_scroll_back,\
92 fn_boot_it, fn_caps_on, fn_compose, fn_SAK,\
93 fn_dec_console, fn_inc_console, fn_spawn_con, fn_bare_num
95 typedef void (fn_handler_fn)(struct vc_data *vc);
96 static fn_handler_fn FN_HANDLERS;
97 static fn_handler_fn *fn_handler[] = { FN_HANDLERS };
100 * Variables exported for vt_ioctl.c
103 struct vt_spawn_console vt_spawn_con = {
104 .lock = __SPIN_LOCK_UNLOCKED(vt_spawn_con.lock),
114 static struct kbd_struct kbd_table[MAX_NR_CONSOLES];
115 static struct kbd_struct *kbd = kbd_table;
117 /* maximum values each key_handler can handle */
118 static const int max_vals[] = {
119 255, ARRAY_SIZE(func_table) - 1, ARRAY_SIZE(fn_handler) - 1, NR_PAD - 1,
120 NR_DEAD - 1, 255, 3, NR_SHIFT - 1, 255, NR_ASCII - 1, NR_LOCK - 1,
121 255, NR_LOCK - 1, 255, NR_BRL - 1
124 static const int NR_TYPES = ARRAY_SIZE(max_vals);
126 static struct input_handler kbd_handler;
127 static DEFINE_SPINLOCK(kbd_event_lock);
128 static unsigned long key_down[BITS_TO_LONGS(KEY_CNT)]; /* keyboard key bitmap */
129 static unsigned char shift_down[NR_SHIFT]; /* shift state counters.. */
130 static bool dead_key_next;
131 static int npadch = -1; /* -1 or number assembled on pad */
132 static unsigned int diacr;
133 static char rep; /* flag telling character repeat */
135 static int shift_state = 0;
137 static unsigned char ledstate = 0xff; /* undefined */
138 static unsigned char ledioctl;
140 static struct ledptr {
143 unsigned char valid:1;
147 * Notifier list for console keyboard events
149 static ATOMIC_NOTIFIER_HEAD(keyboard_notifier_list);
151 int register_keyboard_notifier(struct notifier_block *nb)
153 return atomic_notifier_chain_register(&keyboard_notifier_list, nb);
155 EXPORT_SYMBOL_GPL(register_keyboard_notifier);
157 int unregister_keyboard_notifier(struct notifier_block *nb)
159 return atomic_notifier_chain_unregister(&keyboard_notifier_list, nb);
161 EXPORT_SYMBOL_GPL(unregister_keyboard_notifier);
164 * Translation of scancodes to keycodes. We set them on only the first
165 * keyboard in the list that accepts the scancode and keycode.
166 * Explanation for not choosing the first attached keyboard anymore:
167 * USB keyboards for example have two event devices: one for all "normal"
168 * keys and one for extra function keys (like "volume up", "make coffee",
169 * etc.). So this means that scancodes for the extra function keys won't
170 * be valid for the first event device, but will be for the second.
173 struct getset_keycode_data {
174 struct input_keymap_entry ke;
178 static int getkeycode_helper(struct input_handle *handle, void *data)
180 struct getset_keycode_data *d = data;
182 d->error = input_get_keycode(handle->dev, &d->ke);
184 return d->error == 0; /* stop as soon as we successfully get one */
187 static int getkeycode(unsigned int scancode)
189 struct getset_keycode_data d = {
192 .len = sizeof(scancode),
198 memcpy(d.ke.scancode, &scancode, sizeof(scancode));
200 input_handler_for_each_handle(&kbd_handler, &d, getkeycode_helper);
202 return d.error ?: d.ke.keycode;
205 static int setkeycode_helper(struct input_handle *handle, void *data)
207 struct getset_keycode_data *d = data;
209 d->error = input_set_keycode(handle->dev, &d->ke);
211 return d->error == 0; /* stop as soon as we successfully set one */
214 static int setkeycode(unsigned int scancode, unsigned int keycode)
216 struct getset_keycode_data d = {
219 .len = sizeof(scancode),
225 memcpy(d.ke.scancode, &scancode, sizeof(scancode));
227 input_handler_for_each_handle(&kbd_handler, &d, setkeycode_helper);
233 * Making beeps and bells. Note that we prefer beeps to bells, but when
234 * shutting the sound off we do both.
237 static int kd_sound_helper(struct input_handle *handle, void *data)
239 unsigned int *hz = data;
240 struct input_dev *dev = handle->dev;
242 if (test_bit(EV_SND, dev->evbit)) {
243 if (test_bit(SND_TONE, dev->sndbit)) {
244 input_inject_event(handle, EV_SND, SND_TONE, *hz);
248 if (test_bit(SND_BELL, dev->sndbit))
249 input_inject_event(handle, EV_SND, SND_BELL, *hz ? 1 : 0);
255 static void kd_nosound(unsigned long ignored)
257 static unsigned int zero;
259 input_handler_for_each_handle(&kbd_handler, &zero, kd_sound_helper);
262 static DEFINE_TIMER(kd_mksound_timer, kd_nosound, 0, 0);
264 void kd_mksound(unsigned int hz, unsigned int ticks)
266 del_timer_sync(&kd_mksound_timer);
268 input_handler_for_each_handle(&kbd_handler, &hz, kd_sound_helper);
271 mod_timer(&kd_mksound_timer, jiffies + ticks);
273 EXPORT_SYMBOL(kd_mksound);
276 * Setting the keyboard rate.
279 static int kbd_rate_helper(struct input_handle *handle, void *data)
281 struct input_dev *dev = handle->dev;
282 struct kbd_repeat *rep = data;
284 if (test_bit(EV_REP, dev->evbit)) {
286 if (rep[0].delay > 0)
287 input_inject_event(handle,
288 EV_REP, REP_DELAY, rep[0].delay);
289 if (rep[0].period > 0)
290 input_inject_event(handle,
291 EV_REP, REP_PERIOD, rep[0].period);
293 rep[1].delay = dev->rep[REP_DELAY];
294 rep[1].period = dev->rep[REP_PERIOD];
300 int kbd_rate(struct kbd_repeat *rep)
302 struct kbd_repeat data[2] = { *rep };
304 input_handler_for_each_handle(&kbd_handler, data, kbd_rate_helper);
305 *rep = data[1]; /* Copy currently used settings */
313 static void put_queue(struct vc_data *vc, int ch)
315 struct tty_struct *tty = vc->port.tty;
318 tty_insert_flip_char(tty, ch, 0);
319 con_schedule_flip(tty);
323 static void puts_queue(struct vc_data *vc, char *cp)
325 struct tty_struct *tty = vc->port.tty;
331 tty_insert_flip_char(tty, *cp, 0);
334 con_schedule_flip(tty);
337 static void applkey(struct vc_data *vc, int key, char mode)
339 static char buf[] = { 0x1b, 'O', 0x00, 0x00 };
341 buf[1] = (mode ? 'O' : '[');
347 * Many other routines do put_queue, but I think either
348 * they produce ASCII, or they produce some user-assigned
349 * string, and in both cases we might assume that it is
352 static void to_utf8(struct vc_data *vc, uint c)
357 else if (c < 0x800) {
358 /* 110***** 10****** */
359 put_queue(vc, 0xc0 | (c >> 6));
360 put_queue(vc, 0x80 | (c & 0x3f));
361 } else if (c < 0x10000) {
362 if (c >= 0xD800 && c < 0xE000)
366 /* 1110**** 10****** 10****** */
367 put_queue(vc, 0xe0 | (c >> 12));
368 put_queue(vc, 0x80 | ((c >> 6) & 0x3f));
369 put_queue(vc, 0x80 | (c & 0x3f));
370 } else if (c < 0x110000) {
371 /* 11110*** 10****** 10****** 10****** */
372 put_queue(vc, 0xf0 | (c >> 18));
373 put_queue(vc, 0x80 | ((c >> 12) & 0x3f));
374 put_queue(vc, 0x80 | ((c >> 6) & 0x3f));
375 put_queue(vc, 0x80 | (c & 0x3f));
380 * Called after returning from RAW mode or when changing consoles - recompute
381 * shift_down[] and shift_state from key_down[] maybe called when keymap is
382 * undefined, so that shiftkey release is seen. The caller must hold the
386 static void do_compute_shiftstate(void)
388 unsigned int i, j, k, sym, val;
391 memset(shift_down, 0, sizeof(shift_down));
393 for (i = 0; i < ARRAY_SIZE(key_down); i++) {
398 k = i * BITS_PER_LONG;
400 for (j = 0; j < BITS_PER_LONG; j++, k++) {
402 if (!test_bit(k, key_down))
405 sym = U(key_maps[0][k]);
406 if (KTYP(sym) != KT_SHIFT && KTYP(sym) != KT_SLOCK)
410 if (val == KVAL(K_CAPSSHIFT))
414 shift_state |= (1 << val);
419 /* We still have to export this method to vt.c */
420 void compute_shiftstate(void)
423 spin_lock_irqsave(&kbd_event_lock, flags);
424 do_compute_shiftstate();
425 spin_unlock_irqrestore(&kbd_event_lock, flags);
429 * We have a combining character DIACR here, followed by the character CH.
430 * If the combination occurs in the table, return the corresponding value.
431 * Otherwise, if CH is a space or equals DIACR, return DIACR.
432 * Otherwise, conclude that DIACR was not combining after all,
433 * queue it and return CH.
435 static unsigned int handle_diacr(struct vc_data *vc, unsigned int ch)
437 unsigned int d = diacr;
442 if ((d & ~0xff) == BRL_UC_ROW) {
443 if ((ch & ~0xff) == BRL_UC_ROW)
446 for (i = 0; i < accent_table_size; i++)
447 if (accent_table[i].diacr == d && accent_table[i].base == ch)
448 return accent_table[i].result;
451 if (ch == ' ' || ch == (BRL_UC_ROW|0) || ch == d)
454 if (kbd->kbdmode == VC_UNICODE)
457 int c = conv_uni_to_8bit(d);
466 * Special function handlers
468 static void fn_enter(struct vc_data *vc)
471 if (kbd->kbdmode == VC_UNICODE)
474 int c = conv_uni_to_8bit(diacr);
482 if (vc_kbd_mode(kbd, VC_CRLF))
486 static void fn_caps_toggle(struct vc_data *vc)
491 chg_vc_kbd_led(kbd, VC_CAPSLOCK);
494 static void fn_caps_on(struct vc_data *vc)
499 set_vc_kbd_led(kbd, VC_CAPSLOCK);
502 static void fn_show_ptregs(struct vc_data *vc)
504 struct pt_regs *regs = get_irq_regs();
510 static void fn_hold(struct vc_data *vc)
512 struct tty_struct *tty = vc->port.tty;
518 * Note: SCROLLOCK will be set (cleared) by stop_tty (start_tty);
519 * these routines are also activated by ^S/^Q.
520 * (And SCROLLOCK can also be set by the ioctl KDSKBLED.)
528 static void fn_num(struct vc_data *vc)
530 if (vc_kbd_mode(kbd, VC_APPLIC))
537 * Bind this to Shift-NumLock if you work in application keypad mode
538 * but want to be able to change the NumLock flag.
539 * Bind this to NumLock if you prefer that the NumLock key always
540 * changes the NumLock flag.
542 static void fn_bare_num(struct vc_data *vc)
545 chg_vc_kbd_led(kbd, VC_NUMLOCK);
548 static void fn_lastcons(struct vc_data *vc)
550 /* switch to the last used console, ChN */
551 set_console(last_console);
554 static void fn_dec_console(struct vc_data *vc)
556 int i, cur = fg_console;
558 /* Currently switching? Queue this next switch relative to that. */
559 if (want_console != -1)
562 for (i = cur - 1; i != cur; i--) {
564 i = MAX_NR_CONSOLES - 1;
565 if (vc_cons_allocated(i))
571 static void fn_inc_console(struct vc_data *vc)
573 int i, cur = fg_console;
575 /* Currently switching? Queue this next switch relative to that. */
576 if (want_console != -1)
579 for (i = cur+1; i != cur; i++) {
580 if (i == MAX_NR_CONSOLES)
582 if (vc_cons_allocated(i))
588 static void fn_send_intr(struct vc_data *vc)
590 struct tty_struct *tty = vc->port.tty;
594 tty_insert_flip_char(tty, 0, TTY_BREAK);
595 con_schedule_flip(tty);
598 static void fn_scroll_forw(struct vc_data *vc)
603 static void fn_scroll_back(struct vc_data *vc)
608 static void fn_show_mem(struct vc_data *vc)
613 static void fn_show_state(struct vc_data *vc)
618 static void fn_boot_it(struct vc_data *vc)
623 static void fn_compose(struct vc_data *vc)
625 dead_key_next = true;
628 static void fn_spawn_con(struct vc_data *vc)
630 spin_lock(&vt_spawn_con.lock);
631 if (vt_spawn_con.pid)
632 if (kill_pid(vt_spawn_con.pid, vt_spawn_con.sig, 1)) {
633 put_pid(vt_spawn_con.pid);
634 vt_spawn_con.pid = NULL;
636 spin_unlock(&vt_spawn_con.lock);
639 static void fn_SAK(struct vc_data *vc)
641 struct work_struct *SAK_work = &vc_cons[fg_console].SAK_work;
642 schedule_work(SAK_work);
645 static void fn_null(struct vc_data *vc)
647 do_compute_shiftstate();
651 * Special key handlers
653 static void k_ignore(struct vc_data *vc, unsigned char value, char up_flag)
657 static void k_spec(struct vc_data *vc, unsigned char value, char up_flag)
661 if (value >= ARRAY_SIZE(fn_handler))
663 if ((kbd->kbdmode == VC_RAW ||
664 kbd->kbdmode == VC_MEDIUMRAW ||
665 kbd->kbdmode == VC_OFF) &&
666 value != KVAL(K_SAK))
667 return; /* SAK is allowed even in raw mode */
668 fn_handler[value](vc);
671 static void k_lowercase(struct vc_data *vc, unsigned char value, char up_flag)
673 pr_err("k_lowercase was called - impossible\n");
676 static void k_unicode(struct vc_data *vc, unsigned int value, char up_flag)
679 return; /* no action, if this is a key release */
682 value = handle_diacr(vc, value);
685 dead_key_next = false;
689 if (kbd->kbdmode == VC_UNICODE)
692 int c = conv_uni_to_8bit(value);
699 * Handle dead key. Note that we now may have several
700 * dead keys modifying the same character. Very useful
703 static void k_deadunicode(struct vc_data *vc, unsigned int value, char up_flag)
708 diacr = (diacr ? handle_diacr(vc, value) : value);
711 static void k_self(struct vc_data *vc, unsigned char value, char up_flag)
713 k_unicode(vc, conv_8bit_to_uni(value), up_flag);
716 static void k_dead2(struct vc_data *vc, unsigned char value, char up_flag)
718 k_deadunicode(vc, value, up_flag);
722 * Obsolete - for backwards compatibility only
724 static void k_dead(struct vc_data *vc, unsigned char value, char up_flag)
726 static const unsigned char ret_diacr[NR_DEAD] = {'`', '\'', '^', '~', '"', ',' };
728 k_deadunicode(vc, ret_diacr[value], up_flag);
731 static void k_cons(struct vc_data *vc, unsigned char value, char up_flag)
739 static void k_fn(struct vc_data *vc, unsigned char value, char up_flag)
744 if ((unsigned)value < ARRAY_SIZE(func_table)) {
745 if (func_table[value])
746 puts_queue(vc, func_table[value]);
748 pr_err("k_fn called with value=%d\n", value);
751 static void k_cur(struct vc_data *vc, unsigned char value, char up_flag)
753 static const char cur_chars[] = "BDCA";
758 applkey(vc, cur_chars[value], vc_kbd_mode(kbd, VC_CKMODE));
761 static void k_pad(struct vc_data *vc, unsigned char value, char up_flag)
763 static const char pad_chars[] = "0123456789+-*/\015,.?()#";
764 static const char app_map[] = "pqrstuvwxylSRQMnnmPQS";
767 return; /* no action, if this is a key release */
769 /* kludge... shift forces cursor/number keys */
770 if (vc_kbd_mode(kbd, VC_APPLIC) && !shift_down[KG_SHIFT]) {
771 applkey(vc, app_map[value], 1);
775 if (!vc_kbd_led(kbd, VC_NUMLOCK)) {
780 k_fn(vc, KVAL(K_REMOVE), 0);
783 k_fn(vc, KVAL(K_INSERT), 0);
786 k_fn(vc, KVAL(K_SELECT), 0);
789 k_cur(vc, KVAL(K_DOWN), 0);
792 k_fn(vc, KVAL(K_PGDN), 0);
795 k_cur(vc, KVAL(K_LEFT), 0);
798 k_cur(vc, KVAL(K_RIGHT), 0);
801 k_fn(vc, KVAL(K_FIND), 0);
804 k_cur(vc, KVAL(K_UP), 0);
807 k_fn(vc, KVAL(K_PGUP), 0);
810 applkey(vc, 'G', vc_kbd_mode(kbd, VC_APPLIC));
815 put_queue(vc, pad_chars[value]);
816 if (value == KVAL(K_PENTER) && vc_kbd_mode(kbd, VC_CRLF))
820 static void k_shift(struct vc_data *vc, unsigned char value, char up_flag)
822 int old_state = shift_state;
828 * a CapsShift key acts like Shift but undoes CapsLock
830 if (value == KVAL(K_CAPSSHIFT)) {
831 value = KVAL(K_SHIFT);
833 clr_vc_kbd_led(kbd, VC_CAPSLOCK);
838 * handle the case that two shift or control
839 * keys are depressed simultaneously
841 if (shift_down[value])
846 if (shift_down[value])
847 shift_state |= (1 << value);
849 shift_state &= ~(1 << value);
852 if (up_flag && shift_state != old_state && npadch != -1) {
853 if (kbd->kbdmode == VC_UNICODE)
856 put_queue(vc, npadch & 0xff);
861 static void k_meta(struct vc_data *vc, unsigned char value, char up_flag)
866 if (vc_kbd_mode(kbd, VC_META)) {
867 put_queue(vc, '\033');
868 put_queue(vc, value);
870 put_queue(vc, value | 0x80);
873 static void k_ascii(struct vc_data *vc, unsigned char value, char up_flag)
881 /* decimal input of code, while Alt depressed */
884 /* hexadecimal input of code, while AltGr depressed */
892 npadch = npadch * base + value;
895 static void k_lock(struct vc_data *vc, unsigned char value, char up_flag)
900 chg_vc_kbd_lock(kbd, value);
903 static void k_slock(struct vc_data *vc, unsigned char value, char up_flag)
905 k_shift(vc, value, up_flag);
909 chg_vc_kbd_slock(kbd, value);
910 /* try to make Alt, oops, AltGr and such work */
911 if (!key_maps[kbd->lockstate ^ kbd->slockstate]) {
913 chg_vc_kbd_slock(kbd, value);
917 /* by default, 300ms interval for combination release */
918 static unsigned brl_timeout = 300;
919 MODULE_PARM_DESC(brl_timeout, "Braille keys release delay in ms (0 for commit on first key release)");
920 module_param(brl_timeout, uint, 0644);
922 static unsigned brl_nbchords = 1;
923 MODULE_PARM_DESC(brl_nbchords, "Number of chords that produce a braille pattern (0 for dead chords)");
924 module_param(brl_nbchords, uint, 0644);
926 static void k_brlcommit(struct vc_data *vc, unsigned int pattern, char up_flag)
928 static unsigned long chords;
929 static unsigned committed;
932 k_deadunicode(vc, BRL_UC_ROW | pattern, up_flag);
934 committed |= pattern;
936 if (chords == brl_nbchords) {
937 k_unicode(vc, BRL_UC_ROW | committed, up_flag);
944 static void k_brl(struct vc_data *vc, unsigned char value, char up_flag)
946 static unsigned pressed, committing;
947 static unsigned long releasestart;
949 if (kbd->kbdmode != VC_UNICODE) {
951 pr_warning("keyboard mode must be unicode for braille patterns\n");
956 k_unicode(vc, BRL_UC_ROW, up_flag);
964 pressed |= 1 << (value - 1);
966 committing = pressed;
967 } else if (brl_timeout) {
970 releasestart + msecs_to_jiffies(brl_timeout))) {
971 committing = pressed;
972 releasestart = jiffies;
974 pressed &= ~(1 << (value - 1));
975 if (!pressed && committing) {
976 k_brlcommit(vc, committing, 0);
981 k_brlcommit(vc, committing, 0);
984 pressed &= ~(1 << (value - 1));
989 * The leds display either (i) the status of NumLock, CapsLock, ScrollLock,
990 * or (ii) whatever pattern of lights people want to show using KDSETLED,
991 * or (iii) specified bits of specified words in kernel memory.
993 unsigned char getledstate(void)
998 void setledstate(struct kbd_struct *kbd, unsigned int led)
1000 unsigned long flags;
1001 spin_lock_irqsave(&kbd_event_lock, flags);
1004 kbd->ledmode = LED_SHOW_IOCTL;
1006 kbd->ledmode = LED_SHOW_FLAGS;
1009 spin_unlock_irqrestore(&kbd_event_lock, flags);
1012 static inline unsigned char getleds(void)
1014 struct kbd_struct *kbd = kbd_table + fg_console;
1018 if (kbd->ledmode == LED_SHOW_IOCTL)
1021 leds = kbd->ledflagstate;
1023 if (kbd->ledmode == LED_SHOW_MEM) {
1024 for (i = 0; i < 3; i++)
1025 if (ledptrs[i].valid) {
1026 if (*ledptrs[i].addr & ledptrs[i].mask)
1035 static int kbd_update_leds_helper(struct input_handle *handle, void *data)
1037 unsigned char leds = *(unsigned char *)data;
1039 if (test_bit(EV_LED, handle->dev->evbit)) {
1040 input_inject_event(handle, EV_LED, LED_SCROLLL, !!(leds & 0x01));
1041 input_inject_event(handle, EV_LED, LED_NUML, !!(leds & 0x02));
1042 input_inject_event(handle, EV_LED, LED_CAPSL, !!(leds & 0x04));
1043 input_inject_event(handle, EV_SYN, SYN_REPORT, 0);
1050 * vt_get_leds - helper for braille console
1051 * @console: console to read
1052 * @flag: flag we want to check
1054 * Check the status of a keyboard led flag and report it back
1056 int vt_get_leds(int console, int flag)
1058 unsigned long flags;
1059 struct kbd_struct * kbd = kbd_table + console;
1062 spin_lock_irqsave(&kbd_event_lock, flags);
1063 ret = vc_kbd_led(kbd, flag);
1064 spin_unlock_irqrestore(&kbd_event_lock, flags);
1068 EXPORT_SYMBOL_GPL(vt_get_leds);
1071 * vt_set_led_state - set LED state of a console
1072 * @console: console to set
1075 * Set the LEDs on a console. This is a wrapper for the VT layer
1076 * so that we can keep kbd knowledge internal
1078 void vt_set_led_state(int console, int leds)
1080 struct kbd_struct * kbd = kbd_table + console;
1081 setledstate(kbd, leds);
1085 * vt_kbd_con_start - Keyboard side of console start
1088 * Handle console start. This is a wrapper for the VT layer
1089 * so that we can keep kbd knowledge internal
1091 void vt_kbd_con_start(int console)
1093 struct kbd_struct * kbd = kbd_table + console;
1094 unsigned long flags;
1095 spin_lock_irqsave(&kbd_event_lock, flags);
1096 clr_vc_kbd_led(kbd, VC_SCROLLOCK);
1098 spin_unlock_irqrestore(&kbd_event_lock, flags);
1102 * vt_kbd_con_stop - Keyboard side of console stop
1105 * Handle console stop. This is a wrapper for the VT layer
1106 * so that we can keep kbd knowledge internal
1108 void vt_kbd_con_stop(int console)
1110 struct kbd_struct * kbd = kbd_table + console;
1111 unsigned long flags;
1112 spin_lock_irqsave(&kbd_event_lock, flags);
1113 set_vc_kbd_led(kbd, VC_SCROLLOCK);
1115 spin_unlock_irqrestore(&kbd_event_lock, flags);
1119 * This is the tasklet that updates LED state on all keyboards
1120 * attached to the box. The reason we use tasklet is that we
1121 * need to handle the scenario when keyboard handler is not
1122 * registered yet but we already getting updates form VT to
1125 static void kbd_bh(unsigned long dummy)
1127 unsigned char leds = getleds();
1129 if (leds != ledstate) {
1130 input_handler_for_each_handle(&kbd_handler, &leds,
1131 kbd_update_leds_helper);
1136 DECLARE_TASKLET_DISABLED(keyboard_tasklet, kbd_bh, 0);
1138 #if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_ALPHA) ||\
1139 defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_SPARC) ||\
1140 defined(CONFIG_PARISC) || defined(CONFIG_SUPERH) ||\
1141 (defined(CONFIG_ARM) && defined(CONFIG_KEYBOARD_ATKBD) && !defined(CONFIG_ARCH_RPC)) ||\
1142 defined(CONFIG_AVR32)
1144 #define HW_RAW(dev) (test_bit(EV_MSC, dev->evbit) && test_bit(MSC_RAW, dev->mscbit) &&\
1145 ((dev)->id.bustype == BUS_I8042) && ((dev)->id.vendor == 0x0001) && ((dev)->id.product == 0x0001))
1147 static const unsigned short x86_keycodes[256] =
1148 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
1149 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
1150 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
1151 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
1152 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
1153 80, 81, 82, 83, 84,118, 86, 87, 88,115,120,119,121,112,123, 92,
1154 284,285,309, 0,312, 91,327,328,329,331,333,335,336,337,338,339,
1155 367,288,302,304,350, 89,334,326,267,126,268,269,125,347,348,349,
1156 360,261,262,263,268,376,100,101,321,316,373,286,289,102,351,355,
1157 103,104,105,275,287,279,258,106,274,107,294,364,358,363,362,361,
1158 291,108,381,281,290,272,292,305,280, 99,112,257,306,359,113,114,
1159 264,117,271,374,379,265,266, 93, 94, 95, 85,259,375,260, 90,116,
1160 377,109,111,277,278,282,283,295,296,297,299,300,301,293,303,307,
1161 308,310,313,314,315,317,318,319,320,357,322,323,324,325,276,330,
1162 332,340,365,342,343,344,345,346,356,270,341,368,369,370,371,372 };
1165 static int sparc_l1_a_state;
1166 extern void sun_do_break(void);
1169 static int emulate_raw(struct vc_data *vc, unsigned int keycode,
1170 unsigned char up_flag)
1177 put_queue(vc, 0xe1);
1178 put_queue(vc, 0x1d | up_flag);
1179 put_queue(vc, 0x45 | up_flag);
1184 put_queue(vc, 0xf2);
1189 put_queue(vc, 0xf1);
1194 * Real AT keyboards (that's what we're trying
1195 * to emulate here emit 0xe0 0x2a 0xe0 0x37 when
1196 * pressing PrtSc/SysRq alone, but simply 0x54
1197 * when pressing Alt+PrtSc/SysRq.
1199 if (test_bit(KEY_LEFTALT, key_down) ||
1200 test_bit(KEY_RIGHTALT, key_down)) {
1201 put_queue(vc, 0x54 | up_flag);
1203 put_queue(vc, 0xe0);
1204 put_queue(vc, 0x2a | up_flag);
1205 put_queue(vc, 0xe0);
1206 put_queue(vc, 0x37 | up_flag);
1214 code = x86_keycodes[keycode];
1219 put_queue(vc, 0xe0);
1220 put_queue(vc, (code & 0x7f) | up_flag);
1230 #define HW_RAW(dev) 0
1232 static int emulate_raw(struct vc_data *vc, unsigned int keycode, unsigned char up_flag)
1237 put_queue(vc, keycode | up_flag);
1242 static void kbd_rawcode(unsigned char data)
1244 struct vc_data *vc = vc_cons[fg_console].d;
1246 kbd = kbd_table + vc->vc_num;
1247 if (kbd->kbdmode == VC_RAW)
1248 put_queue(vc, data);
1251 static void kbd_keycode(unsigned int keycode, int down, int hw_raw)
1253 struct vc_data *vc = vc_cons[fg_console].d;
1254 unsigned short keysym, *key_map;
1257 struct tty_struct *tty;
1259 struct keyboard_notifier_param param = { .vc = vc, .value = keycode, .down = down };
1264 if (tty && (!tty->driver_data)) {
1265 /* No driver data? Strange. Okay we fix it then. */
1266 tty->driver_data = vc;
1269 kbd = kbd_table + vc->vc_num;
1272 if (keycode == KEY_STOP)
1273 sparc_l1_a_state = down;
1278 raw_mode = (kbd->kbdmode == VC_RAW);
1279 if (raw_mode && !hw_raw)
1280 if (emulate_raw(vc, keycode, !down << 7))
1281 if (keycode < BTN_MISC && printk_ratelimit())
1282 pr_warning("can't emulate rawmode for keycode %d\n",
1285 /* This code has to be redone for some non-x86 platforms */
1286 if (down == 1 && (keycode == 0x3c || keycode == 0x01)) {
1287 /* F2 and ESC on PC keyboard */
1288 if (splash_verbose())
1293 if (keycode == KEY_A && sparc_l1_a_state) {
1294 sparc_l1_a_state = false;
1299 if (kbd->kbdmode == VC_MEDIUMRAW) {
1301 * This is extended medium raw mode, with keys above 127
1302 * encoded as 0, high 7 bits, low 7 bits, with the 0 bearing
1303 * the 'up' flag if needed. 0 is reserved, so this shouldn't
1304 * interfere with anything else. The two bytes after 0 will
1305 * always have the up flag set not to interfere with older
1306 * applications. This allows for 16384 different keycodes,
1307 * which should be enough.
1309 if (keycode < 128) {
1310 put_queue(vc, keycode | (!down << 7));
1312 put_queue(vc, !down << 7);
1313 put_queue(vc, (keycode >> 7) | 0x80);
1314 put_queue(vc, keycode | 0x80);
1320 set_bit(keycode, key_down);
1322 clear_bit(keycode, key_down);
1325 (!vc_kbd_mode(kbd, VC_REPEAT) ||
1326 (tty && !L_ECHO(tty) && tty_chars_in_buffer(tty)))) {
1328 * Don't repeat a key if the input buffers are not empty and the
1329 * characters get aren't echoed locally. This makes key repeat
1330 * usable with slow applications and under heavy loads.
1335 param.shift = shift_final = (shift_state | kbd->slockstate) ^ kbd->lockstate;
1336 param.ledstate = kbd->ledflagstate;
1337 key_map = key_maps[shift_final];
1339 rc = atomic_notifier_call_chain(&keyboard_notifier_list,
1340 KBD_KEYCODE, ¶m);
1341 if (rc == NOTIFY_STOP || !key_map) {
1342 atomic_notifier_call_chain(&keyboard_notifier_list,
1343 KBD_UNBOUND_KEYCODE, ¶m);
1344 do_compute_shiftstate();
1345 kbd->slockstate = 0;
1349 if (keycode < NR_KEYS)
1350 keysym = key_map[keycode];
1351 else if (keycode >= KEY_BRL_DOT1 && keycode <= KEY_BRL_DOT8)
1352 keysym = U(K(KT_BRL, keycode - KEY_BRL_DOT1 + 1));
1356 type = KTYP(keysym);
1359 param.value = keysym;
1360 rc = atomic_notifier_call_chain(&keyboard_notifier_list,
1361 KBD_UNICODE, ¶m);
1362 if (rc != NOTIFY_STOP)
1363 if (down && !raw_mode)
1364 to_utf8(vc, keysym);
1370 if (type == KT_LETTER) {
1372 if (vc_kbd_led(kbd, VC_CAPSLOCK)) {
1373 key_map = key_maps[shift_final ^ (1 << KG_SHIFT)];
1375 keysym = key_map[keycode];
1379 param.value = keysym;
1380 rc = atomic_notifier_call_chain(&keyboard_notifier_list,
1381 KBD_KEYSYM, ¶m);
1382 if (rc == NOTIFY_STOP)
1385 if ((raw_mode || kbd->kbdmode == VC_OFF) && type != KT_SPEC && type != KT_SHIFT)
1388 (*k_handler[type])(vc, keysym & 0xff, !down);
1390 param.ledstate = kbd->ledflagstate;
1391 atomic_notifier_call_chain(&keyboard_notifier_list, KBD_POST_KEYSYM, ¶m);
1393 if (type != KT_SLOCK)
1394 kbd->slockstate = 0;
1397 static void kbd_event(struct input_handle *handle, unsigned int event_type,
1398 unsigned int event_code, int value)
1400 /* We are called with interrupts disabled, just take the lock */
1401 spin_lock(&kbd_event_lock);
1403 if (event_type == EV_MSC && event_code == MSC_RAW && HW_RAW(handle->dev))
1405 if (event_type == EV_KEY)
1406 kbd_keycode(event_code, value, HW_RAW(handle->dev));
1408 spin_unlock(&kbd_event_lock);
1410 tasklet_schedule(&keyboard_tasklet);
1411 do_poke_blanked_console = 1;
1412 schedule_console_callback();
1415 static bool kbd_match(struct input_handler *handler, struct input_dev *dev)
1419 if (test_bit(EV_SND, dev->evbit))
1422 if (test_bit(EV_KEY, dev->evbit)) {
1423 for (i = KEY_RESERVED; i < BTN_MISC; i++)
1424 if (test_bit(i, dev->keybit))
1426 for (i = KEY_BRL_DOT1; i <= KEY_BRL_DOT10; i++)
1427 if (test_bit(i, dev->keybit))
1435 * When a keyboard (or other input device) is found, the kbd_connect
1436 * function is called. The function then looks at the device, and if it
1437 * likes it, it can open it and get events from it. In this (kbd_connect)
1438 * function, we should decide which VT to bind that keyboard to initially.
1440 static int kbd_connect(struct input_handler *handler, struct input_dev *dev,
1441 const struct input_device_id *id)
1443 struct input_handle *handle;
1446 handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
1451 handle->handler = handler;
1452 handle->name = "kbd";
1454 error = input_register_handle(handle);
1456 goto err_free_handle;
1458 error = input_open_device(handle);
1460 goto err_unregister_handle;
1464 err_unregister_handle:
1465 input_unregister_handle(handle);
1471 static void kbd_disconnect(struct input_handle *handle)
1473 input_close_device(handle);
1474 input_unregister_handle(handle);
1479 * Start keyboard handler on the new keyboard by refreshing LED state to
1480 * match the rest of the system.
1482 static void kbd_start(struct input_handle *handle)
1484 tasklet_disable(&keyboard_tasklet);
1486 if (ledstate != 0xff)
1487 kbd_update_leds_helper(handle, &ledstate);
1489 tasklet_enable(&keyboard_tasklet);
1492 static const struct input_device_id kbd_ids[] = {
1494 .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
1495 .evbit = { BIT_MASK(EV_KEY) },
1499 .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
1500 .evbit = { BIT_MASK(EV_SND) },
1503 { }, /* Terminating entry */
1506 MODULE_DEVICE_TABLE(input, kbd_ids);
1508 static struct input_handler kbd_handler = {
1511 .connect = kbd_connect,
1512 .disconnect = kbd_disconnect,
1515 .id_table = kbd_ids,
1518 int __init kbd_init(void)
1523 for (i = 0; i < MAX_NR_CONSOLES; i++) {
1524 kbd_table[i].ledflagstate = KBD_DEFLEDS;
1525 kbd_table[i].default_ledflagstate = KBD_DEFLEDS;
1526 kbd_table[i].ledmode = LED_SHOW_FLAGS;
1527 kbd_table[i].lockstate = KBD_DEFLOCK;
1528 kbd_table[i].slockstate = 0;
1529 kbd_table[i].modeflags = KBD_DEFMODE;
1530 kbd_table[i].kbdmode = default_utf8 ? VC_UNICODE : VC_XLATE;
1533 error = input_register_handler(&kbd_handler);
1537 tasklet_enable(&keyboard_tasklet);
1538 tasklet_schedule(&keyboard_tasklet);
1543 /* Ioctl support code */
1546 * vt_do_diacrit - diacritical table updates
1547 * @cmd: ioctl request
1548 * @up: pointer to user data for ioctl
1549 * @perm: permissions check computed by caller
1551 * Update the diacritical tables atomically and safely. Lock them
1552 * against simultaneous keypresses
1554 int vt_do_diacrit(unsigned int cmd, void __user *up, int perm)
1556 struct kbdiacrs __user *a = up;
1557 unsigned long flags;
1564 struct kbdiacr *diacr;
1567 diacr = kmalloc(MAX_DIACR * sizeof(struct kbdiacr),
1572 /* Lock the diacriticals table, make a copy and then
1573 copy it after we unlock */
1574 spin_lock_irqsave(&kbd_event_lock, flags);
1576 asize = accent_table_size;
1577 for (i = 0; i < asize; i++) {
1578 diacr[i].diacr = conv_uni_to_8bit(
1579 accent_table[i].diacr);
1580 diacr[i].base = conv_uni_to_8bit(
1581 accent_table[i].base);
1582 diacr[i].result = conv_uni_to_8bit(
1583 accent_table[i].result);
1585 spin_unlock_irqrestore(&kbd_event_lock, flags);
1587 if (put_user(asize, &a->kb_cnt))
1589 else if (copy_to_user(a->kbdiacr, diacr,
1590 asize * sizeof(struct kbdiacr)))
1597 struct kbdiacrsuc __user *a = up;
1600 buf = kmalloc(MAX_DIACR * sizeof(struct kbdiacruc),
1605 /* Lock the diacriticals table, make a copy and then
1606 copy it after we unlock */
1607 spin_lock_irqsave(&kbd_event_lock, flags);
1609 asize = accent_table_size;
1610 memcpy(buf, accent_table, asize * sizeof(struct kbdiacruc));
1612 spin_unlock_irqrestore(&kbd_event_lock, flags);
1614 if (put_user(asize, &a->kb_cnt))
1616 else if (copy_to_user(a->kbdiacruc, buf,
1617 asize*sizeof(struct kbdiacruc)))
1625 struct kbdiacrs __user *a = up;
1626 struct kbdiacr *diacr = NULL;
1632 if (get_user(ct, &a->kb_cnt))
1634 if (ct >= MAX_DIACR)
1638 diacr = kmalloc(sizeof(struct kbdiacr) * ct,
1643 if (copy_from_user(diacr, a->kbdiacr,
1644 sizeof(struct kbdiacr) * ct)) {
1650 spin_lock_irqsave(&kbd_event_lock, flags);
1651 accent_table_size = ct;
1652 for (i = 0; i < ct; i++) {
1653 accent_table[i].diacr =
1654 conv_8bit_to_uni(diacr[i].diacr);
1655 accent_table[i].base =
1656 conv_8bit_to_uni(diacr[i].base);
1657 accent_table[i].result =
1658 conv_8bit_to_uni(diacr[i].result);
1660 spin_unlock_irqrestore(&kbd_event_lock, flags);
1667 struct kbdiacrsuc __user *a = up;
1674 if (get_user(ct, &a->kb_cnt))
1677 if (ct >= MAX_DIACR)
1681 buf = kmalloc(ct * sizeof(struct kbdiacruc),
1686 if (copy_from_user(buf, a->kbdiacruc,
1687 ct * sizeof(struct kbdiacruc))) {
1692 spin_lock_irqsave(&kbd_event_lock, flags);
1694 memcpy(accent_table, buf,
1695 ct * sizeof(struct kbdiacruc));
1696 accent_table_size = ct;
1697 spin_unlock_irqrestore(&kbd_event_lock, flags);
1706 * vt_do_kdskbmode - set keyboard mode ioctl
1707 * @console: the console to use
1708 * @arg: the requested mode
1710 * Update the keyboard mode bits while holding the correct locks.
1711 * Return 0 for success or an error code.
1713 int vt_do_kdskbmode(int console, unsigned int arg)
1715 struct kbd_struct * kbd = kbd_table + console;
1717 unsigned long flags;
1719 spin_lock_irqsave(&kbd_event_lock, flags);
1722 kbd->kbdmode = VC_RAW;
1725 kbd->kbdmode = VC_MEDIUMRAW;
1728 kbd->kbdmode = VC_XLATE;
1729 do_compute_shiftstate();
1732 kbd->kbdmode = VC_UNICODE;
1733 do_compute_shiftstate();
1736 kbd->kbdmode = VC_OFF;
1741 spin_unlock_irqrestore(&kbd_event_lock, flags);
1746 * vt_do_kdskbmeta - set keyboard meta state
1747 * @console: the console to use
1748 * @arg: the requested meta state
1750 * Update the keyboard meta bits while holding the correct locks.
1751 * Return 0 for success or an error code.
1753 int vt_do_kdskbmeta(int console, unsigned int arg)
1755 struct kbd_struct * kbd = kbd_table + console;
1757 unsigned long flags;
1759 spin_lock_irqsave(&kbd_event_lock, flags);
1762 clr_vc_kbd_mode(kbd, VC_META);
1765 set_vc_kbd_mode(kbd, VC_META);
1770 spin_unlock_irqrestore(&kbd_event_lock, flags);
1774 int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc,
1777 struct kbkeycode tmp;
1780 if (copy_from_user(&tmp, user_kbkc, sizeof(struct kbkeycode)))
1784 kc = getkeycode(tmp.scancode);
1786 kc = put_user(kc, &user_kbkc->keycode);
1791 kc = setkeycode(tmp.scancode, tmp.keycode);
1797 #define i (tmp.kb_index)
1798 #define s (tmp.kb_table)
1799 #define v (tmp.kb_value)
1801 int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm,
1804 struct kbd_struct * kbd = kbd_table + console;
1806 ushort *key_map, *new_map, val, ov;
1807 unsigned long flags;
1809 if (copy_from_user(&tmp, user_kbe, sizeof(struct kbentry)))
1812 if (!capable(CAP_SYS_TTY_CONFIG))
1817 /* Ensure another thread doesn't free it under us */
1818 spin_lock_irqsave(&kbd_event_lock, flags);
1819 key_map = key_maps[s];
1821 val = U(key_map[i]);
1822 if (kbd->kbdmode != VC_UNICODE && KTYP(val) >= NR_TYPES)
1825 val = (i ? K_HOLE : K_NOSUCHMAP);
1826 spin_unlock_irqrestore(&kbd_event_lock, flags);
1827 return put_user(val, &user_kbe->kb_value);
1831 if (!i && v == K_NOSUCHMAP) {
1832 spin_lock_irqsave(&kbd_event_lock, flags);
1833 /* deallocate map */
1834 key_map = key_maps[s];
1837 if (key_map[0] == U(K_ALLOCATED)) {
1842 spin_unlock_irqrestore(&kbd_event_lock, flags);
1846 if (KTYP(v) < NR_TYPES) {
1847 if (KVAL(v) > max_vals[KTYP(v)])
1850 if (kbd->kbdmode != VC_UNICODE)
1853 /* ++Geert: non-PC keyboards may generate keycode zero */
1854 #if !defined(__mc68000__) && !defined(__powerpc__)
1855 /* assignment to entry 0 only tests validity of args */
1860 new_map = kmalloc(sizeof(plain_map), GFP_KERNEL);
1863 spin_lock_irqsave(&kbd_event_lock, flags);
1864 key_map = key_maps[s];
1865 if (key_map == NULL) {
1868 if (keymap_count >= MAX_NR_OF_USER_KEYMAPS &&
1869 !capable(CAP_SYS_RESOURCE)) {
1870 spin_unlock_irqrestore(&kbd_event_lock, flags);
1874 key_maps[s] = new_map;
1876 key_map[0] = U(K_ALLOCATED);
1877 for (j = 1; j < NR_KEYS; j++)
1878 key_map[j] = U(K_HOLE);
1889 if (((ov == K_SAK) || (v == K_SAK)) && !capable(CAP_SYS_ADMIN)) {
1890 spin_unlock_irqrestore(&kbd_event_lock, flags);
1894 if (!s && (KTYP(ov) == KT_SHIFT || KTYP(v) == KT_SHIFT))
1895 do_compute_shiftstate();
1897 spin_unlock_irqrestore(&kbd_event_lock, flags);
1906 /* FIXME: This one needs untangling and locking */
1907 int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm)
1909 struct kbsentry *kbs;
1915 char *first_free, *fj, *fnw;
1919 if (!capable(CAP_SYS_TTY_CONFIG))
1922 kbs = kmalloc(sizeof(*kbs), GFP_KERNEL);
1928 /* we mostly copy too much here (512bytes), but who cares ;) */
1929 if (copy_from_user(kbs, user_kdgkb, sizeof(struct kbsentry))) {
1933 kbs->kb_string[sizeof(kbs->kb_string)-1] = '\0';
1938 sz = sizeof(kbs->kb_string) - 1; /* sz should have been
1940 up = user_kdgkb->kb_string;
1943 for ( ; *p && sz; p++, sz--)
1944 if (put_user(*p, up++)) {
1948 if (put_user('\0', up)) {
1953 return ((p && *p) ? -EOVERFLOW : 0);
1961 first_free = funcbufptr + (funcbufsize - funcbufleft);
1962 for (j = i+1; j < MAX_NR_FUNC && !func_table[j]; j++)
1964 if (j < MAX_NR_FUNC)
1969 delta = (q ? -strlen(q) : 1) + strlen(kbs->kb_string);
1970 if (delta <= funcbufleft) { /* it fits in current buf */
1971 if (j < MAX_NR_FUNC) {
1972 memmove(fj + delta, fj, first_free - fj);
1973 for (k = j; k < MAX_NR_FUNC; k++)
1975 func_table[k] += delta;
1979 funcbufleft -= delta;
1980 } else { /* allocate a larger buffer */
1982 while (sz < funcbufsize - funcbufleft + delta)
1984 fnw = kmalloc(sz, GFP_KERNEL);
1992 if (fj > funcbufptr)
1993 memmove(fnw, funcbufptr, fj - funcbufptr);
1994 for (k = 0; k < j; k++)
1996 func_table[k] = fnw + (func_table[k] - funcbufptr);
1998 if (first_free > fj) {
1999 memmove(fnw + (fj - funcbufptr) + delta, fj, first_free - fj);
2000 for (k = j; k < MAX_NR_FUNC; k++)
2002 func_table[k] = fnw + (func_table[k] - funcbufptr) + delta;
2004 if (funcbufptr != func_buf)
2007 funcbufleft = funcbufleft - delta + sz - funcbufsize;
2010 strcpy(func_table[i], kbs->kb_string);
2019 int vt_do_kdskled(int console, int cmd, unsigned long arg, int perm)
2021 struct kbd_struct * kbd = kbd_table + console;
2022 unsigned long flags;
2023 unsigned char ucval;
2026 /* the ioctls below read/set the flags usually shown in the leds */
2027 /* don't use them - they will go away without warning */
2029 spin_lock_irqsave(&kbd_event_lock, flags);
2030 ucval = kbd->ledflagstate | (kbd->default_ledflagstate << 4);
2031 spin_unlock_irqrestore(&kbd_event_lock, flags);
2032 return put_user(ucval, (char __user *)arg);
2039 spin_lock_irqsave(&kbd_event_lock, flags);
2040 kbd->ledflagstate = (arg & 7);
2041 kbd->default_ledflagstate = ((arg >> 4) & 7);
2043 spin_unlock_irqrestore(&kbd_event_lock, flags);
2046 /* the ioctls below only set the lights, not the functions */
2047 /* for those, see KDGKBLED and KDSKBLED above */
2049 ucval = getledstate();
2050 return put_user(ucval, (char __user *)arg);
2055 setledstate(kbd, arg);
2058 return -ENOIOCTLCMD;
2061 int vt_do_kdgkbmode(int console)
2063 struct kbd_struct * kbd = kbd_table + console;
2064 /* This is a spot read so needs no locking */
2065 switch (kbd->kbdmode) {
2080 * vt_do_kdgkbmeta - report meta status
2081 * @console: console to report
2083 * Report the meta flag status of this console
2085 int vt_do_kdgkbmeta(int console)
2087 struct kbd_struct * kbd = kbd_table + console;
2088 /* Again a spot read so no locking */
2089 return vc_kbd_mode(kbd, VC_META) ? K_ESCPREFIX : K_METABIT;
2093 * vt_reset_unicode - reset the unicode status
2094 * @console: console being reset
2096 * Restore the unicode console state to its default
2098 void vt_reset_unicode(int console)
2100 unsigned long flags;
2102 spin_lock_irqsave(&kbd_event_lock, flags);
2103 kbd_table[console].kbdmode = default_utf8 ? VC_UNICODE : VC_XLATE;
2104 spin_unlock_irqrestore(&kbd_event_lock, flags);
2108 * vt_get_shiftstate - shift bit state
2110 * Report the shift bits from the keyboard state. We have to export
2111 * this to support some oddities in the vt layer.
2113 int vt_get_shift_state(void)
2115 /* Don't lock as this is a transient report */
2120 * vt_reset_keyboard - reset keyboard state
2121 * @console: console to reset
2123 * Reset the keyboard bits for a console as part of a general console
2126 void vt_reset_keyboard(int console)
2128 struct kbd_struct * kbd = kbd_table + console;
2129 unsigned long flags;
2131 spin_lock_irqsave(&kbd_event_lock, flags);
2132 set_vc_kbd_mode(kbd, VC_REPEAT);
2133 clr_vc_kbd_mode(kbd, VC_CKMODE);
2134 clr_vc_kbd_mode(kbd, VC_APPLIC);
2135 clr_vc_kbd_mode(kbd, VC_CRLF);
2137 kbd->slockstate = 0;
2138 kbd->ledmode = LED_SHOW_FLAGS;
2139 kbd->ledflagstate = kbd->default_ledflagstate;
2140 /* do not do set_leds here because this causes an endless tasklet loop
2141 when the keyboard hasn't been initialized yet */
2142 spin_unlock_irqrestore(&kbd_event_lock, flags);
2146 * vt_get_kbd_mode_bit - read keyboard status bits
2147 * @console: console to read from
2148 * @bit: mode bit to read
2150 * Report back a vt mode bit. We do this without locking so the
2151 * caller must be sure that there are no synchronization needs
2154 int vt_get_kbd_mode_bit(int console, int bit)
2156 struct kbd_struct * kbd = kbd_table + console;
2157 return vc_kbd_mode(kbd, bit);
2161 * vt_set_kbd_mode_bit - read keyboard status bits
2162 * @console: console to read from
2163 * @bit: mode bit to read
2165 * Set a vt mode bit. We do this without locking so the
2166 * caller must be sure that there are no synchronization needs
2169 void vt_set_kbd_mode_bit(int console, int bit)
2171 struct kbd_struct * kbd = kbd_table + console;
2172 unsigned long flags;
2174 spin_lock_irqsave(&kbd_event_lock, flags);
2175 set_vc_kbd_mode(kbd, bit);
2176 spin_unlock_irqrestore(&kbd_event_lock, flags);
2180 * vt_clr_kbd_mode_bit - read keyboard status bits
2181 * @console: console to read from
2182 * @bit: mode bit to read
2184 * Report back a vt mode bit. We do this without locking so the
2185 * caller must be sure that there are no synchronization needs
2188 void vt_clr_kbd_mode_bit(int console, int bit)
2190 struct kbd_struct * kbd = kbd_table + console;
2191 unsigned long flags;
2193 spin_lock_irqsave(&kbd_event_lock, flags);
2194 clr_vc_kbd_mode(kbd, bit);
2195 spin_unlock_irqrestore(&kbd_event_lock, flags);