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 extern void ctrl_alt_del(void);
51 * Exported functions/variables
54 #define KBD_DEFMODE ((1 << VC_REPEAT) | (1 << VC_META))
56 #if defined(CONFIG_X86) || defined(CONFIG_PARISC)
57 #include <asm/kbdleds.h>
59 static inline int kbd_defleds(void)
72 k_self, k_fn, k_spec, k_pad,\
73 k_dead, k_cons, k_cur, k_shift,\
74 k_meta, k_ascii, k_lock, k_lowercase,\
75 k_slock, k_dead2, k_brl, k_ignore
77 typedef void (k_handler_fn)(struct vc_data *vc, unsigned char value,
79 static k_handler_fn K_HANDLERS;
80 static k_handler_fn *k_handler[16] = { K_HANDLERS };
83 fn_null, fn_enter, fn_show_ptregs, fn_show_mem,\
84 fn_show_state, fn_send_intr, fn_lastcons, fn_caps_toggle,\
85 fn_num, fn_hold, fn_scroll_forw, fn_scroll_back,\
86 fn_boot_it, fn_caps_on, fn_compose, fn_SAK,\
87 fn_dec_console, fn_inc_console, fn_spawn_con, fn_bare_num
89 typedef void (fn_handler_fn)(struct vc_data *vc);
90 static fn_handler_fn FN_HANDLERS;
91 static fn_handler_fn *fn_handler[] = { FN_HANDLERS };
94 * Variables exported for vt_ioctl.c
97 struct vt_spawn_console vt_spawn_con = {
98 .lock = __SPIN_LOCK_UNLOCKED(vt_spawn_con.lock),
108 static struct kbd_struct kbd_table[MAX_NR_CONSOLES];
109 static struct kbd_struct *kbd = kbd_table;
111 /* maximum values each key_handler can handle */
112 static const int max_vals[] = {
113 255, ARRAY_SIZE(func_table) - 1, ARRAY_SIZE(fn_handler) - 1, NR_PAD - 1,
114 NR_DEAD - 1, 255, 3, NR_SHIFT - 1, 255, NR_ASCII - 1, NR_LOCK - 1,
115 255, NR_LOCK - 1, 255, NR_BRL - 1
118 static const int NR_TYPES = ARRAY_SIZE(max_vals);
120 static struct input_handler kbd_handler;
121 static DEFINE_SPINLOCK(kbd_event_lock);
122 static unsigned long key_down[BITS_TO_LONGS(KEY_CNT)]; /* keyboard key bitmap */
123 static unsigned char shift_down[NR_SHIFT]; /* shift state counters.. */
124 static bool dead_key_next;
125 static int npadch = -1; /* -1 or number assembled on pad */
126 static unsigned int diacr;
127 static char rep; /* flag telling character repeat */
129 static int shift_state = 0;
131 static unsigned char ledstate = 0xff; /* undefined */
132 static unsigned char ledioctl;
134 static struct ledptr {
137 unsigned char valid:1;
141 * Notifier list for console keyboard events
143 static ATOMIC_NOTIFIER_HEAD(keyboard_notifier_list);
145 int register_keyboard_notifier(struct notifier_block *nb)
147 return atomic_notifier_chain_register(&keyboard_notifier_list, nb);
149 EXPORT_SYMBOL_GPL(register_keyboard_notifier);
151 int unregister_keyboard_notifier(struct notifier_block *nb)
153 return atomic_notifier_chain_unregister(&keyboard_notifier_list, nb);
155 EXPORT_SYMBOL_GPL(unregister_keyboard_notifier);
158 * Translation of scancodes to keycodes. We set them on only the first
159 * keyboard in the list that accepts the scancode and keycode.
160 * Explanation for not choosing the first attached keyboard anymore:
161 * USB keyboards for example have two event devices: one for all "normal"
162 * keys and one for extra function keys (like "volume up", "make coffee",
163 * etc.). So this means that scancodes for the extra function keys won't
164 * be valid for the first event device, but will be for the second.
167 struct getset_keycode_data {
168 struct input_keymap_entry ke;
172 static int getkeycode_helper(struct input_handle *handle, void *data)
174 struct getset_keycode_data *d = data;
176 d->error = input_get_keycode(handle->dev, &d->ke);
178 return d->error == 0; /* stop as soon as we successfully get one */
181 static int getkeycode(unsigned int scancode)
183 struct getset_keycode_data d = {
186 .len = sizeof(scancode),
192 memcpy(d.ke.scancode, &scancode, sizeof(scancode));
194 input_handler_for_each_handle(&kbd_handler, &d, getkeycode_helper);
196 return d.error ?: d.ke.keycode;
199 static int setkeycode_helper(struct input_handle *handle, void *data)
201 struct getset_keycode_data *d = data;
203 d->error = input_set_keycode(handle->dev, &d->ke);
205 return d->error == 0; /* stop as soon as we successfully set one */
208 static int setkeycode(unsigned int scancode, unsigned int keycode)
210 struct getset_keycode_data d = {
213 .len = sizeof(scancode),
219 memcpy(d.ke.scancode, &scancode, sizeof(scancode));
221 input_handler_for_each_handle(&kbd_handler, &d, setkeycode_helper);
227 * Making beeps and bells. Note that we prefer beeps to bells, but when
228 * shutting the sound off we do both.
231 static int kd_sound_helper(struct input_handle *handle, void *data)
233 unsigned int *hz = data;
234 struct input_dev *dev = handle->dev;
236 if (test_bit(EV_SND, dev->evbit)) {
237 if (test_bit(SND_TONE, dev->sndbit)) {
238 input_inject_event(handle, EV_SND, SND_TONE, *hz);
242 if (test_bit(SND_BELL, dev->sndbit))
243 input_inject_event(handle, EV_SND, SND_BELL, *hz ? 1 : 0);
249 static void kd_nosound(unsigned long ignored)
251 static unsigned int zero;
253 input_handler_for_each_handle(&kbd_handler, &zero, kd_sound_helper);
256 static DEFINE_TIMER(kd_mksound_timer, kd_nosound, 0, 0);
258 void kd_mksound(unsigned int hz, unsigned int ticks)
260 del_timer_sync(&kd_mksound_timer);
262 input_handler_for_each_handle(&kbd_handler, &hz, kd_sound_helper);
265 mod_timer(&kd_mksound_timer, jiffies + ticks);
267 EXPORT_SYMBOL(kd_mksound);
270 * Setting the keyboard rate.
273 static int kbd_rate_helper(struct input_handle *handle, void *data)
275 struct input_dev *dev = handle->dev;
276 struct kbd_repeat *rep = data;
278 if (test_bit(EV_REP, dev->evbit)) {
280 if (rep[0].delay > 0)
281 input_inject_event(handle,
282 EV_REP, REP_DELAY, rep[0].delay);
283 if (rep[0].period > 0)
284 input_inject_event(handle,
285 EV_REP, REP_PERIOD, rep[0].period);
287 rep[1].delay = dev->rep[REP_DELAY];
288 rep[1].period = dev->rep[REP_PERIOD];
294 int kbd_rate(struct kbd_repeat *rep)
296 struct kbd_repeat data[2] = { *rep };
298 input_handler_for_each_handle(&kbd_handler, data, kbd_rate_helper);
299 *rep = data[1]; /* Copy currently used settings */
307 static void put_queue(struct vc_data *vc, int ch)
309 struct tty_struct *tty = vc->port.tty;
312 tty_insert_flip_char(tty, ch, 0);
313 tty_schedule_flip(tty);
317 static void puts_queue(struct vc_data *vc, char *cp)
319 struct tty_struct *tty = vc->port.tty;
325 tty_insert_flip_char(tty, *cp, 0);
328 tty_schedule_flip(tty);
331 static void applkey(struct vc_data *vc, int key, char mode)
333 static char buf[] = { 0x1b, 'O', 0x00, 0x00 };
335 buf[1] = (mode ? 'O' : '[');
341 * Many other routines do put_queue, but I think either
342 * they produce ASCII, or they produce some user-assigned
343 * string, and in both cases we might assume that it is
346 static void to_utf8(struct vc_data *vc, uint c)
351 else if (c < 0x800) {
352 /* 110***** 10****** */
353 put_queue(vc, 0xc0 | (c >> 6));
354 put_queue(vc, 0x80 | (c & 0x3f));
355 } else if (c < 0x10000) {
356 if (c >= 0xD800 && c < 0xE000)
360 /* 1110**** 10****** 10****** */
361 put_queue(vc, 0xe0 | (c >> 12));
362 put_queue(vc, 0x80 | ((c >> 6) & 0x3f));
363 put_queue(vc, 0x80 | (c & 0x3f));
364 } else if (c < 0x110000) {
365 /* 11110*** 10****** 10****** 10****** */
366 put_queue(vc, 0xf0 | (c >> 18));
367 put_queue(vc, 0x80 | ((c >> 12) & 0x3f));
368 put_queue(vc, 0x80 | ((c >> 6) & 0x3f));
369 put_queue(vc, 0x80 | (c & 0x3f));
374 * Called after returning from RAW mode or when changing consoles - recompute
375 * shift_down[] and shift_state from key_down[] maybe called when keymap is
376 * undefined, so that shiftkey release is seen. The caller must hold the
380 static void do_compute_shiftstate(void)
382 unsigned int i, j, k, sym, val;
385 memset(shift_down, 0, sizeof(shift_down));
387 for (i = 0; i < ARRAY_SIZE(key_down); i++) {
392 k = i * BITS_PER_LONG;
394 for (j = 0; j < BITS_PER_LONG; j++, k++) {
396 if (!test_bit(k, key_down))
399 sym = U(key_maps[0][k]);
400 if (KTYP(sym) != KT_SHIFT && KTYP(sym) != KT_SLOCK)
404 if (val == KVAL(K_CAPSSHIFT))
408 shift_state |= (1 << val);
413 /* We still have to export this method to vt.c */
414 void compute_shiftstate(void)
417 spin_lock_irqsave(&kbd_event_lock, flags);
418 do_compute_shiftstate();
419 spin_unlock_irqrestore(&kbd_event_lock, flags);
423 * We have a combining character DIACR here, followed by the character CH.
424 * If the combination occurs in the table, return the corresponding value.
425 * Otherwise, if CH is a space or equals DIACR, return DIACR.
426 * Otherwise, conclude that DIACR was not combining after all,
427 * queue it and return CH.
429 static unsigned int handle_diacr(struct vc_data *vc, unsigned int ch)
431 unsigned int d = diacr;
436 if ((d & ~0xff) == BRL_UC_ROW) {
437 if ((ch & ~0xff) == BRL_UC_ROW)
440 for (i = 0; i < accent_table_size; i++)
441 if (accent_table[i].diacr == d && accent_table[i].base == ch)
442 return accent_table[i].result;
445 if (ch == ' ' || ch == (BRL_UC_ROW|0) || ch == d)
448 if (kbd->kbdmode == VC_UNICODE)
451 int c = conv_uni_to_8bit(d);
460 * Special function handlers
462 static void fn_enter(struct vc_data *vc)
465 if (kbd->kbdmode == VC_UNICODE)
468 int c = conv_uni_to_8bit(diacr);
476 if (vc_kbd_mode(kbd, VC_CRLF))
480 static void fn_caps_toggle(struct vc_data *vc)
485 chg_vc_kbd_led(kbd, VC_CAPSLOCK);
488 static void fn_caps_on(struct vc_data *vc)
493 set_vc_kbd_led(kbd, VC_CAPSLOCK);
496 static void fn_show_ptregs(struct vc_data *vc)
498 struct pt_regs *regs = get_irq_regs();
504 static void fn_hold(struct vc_data *vc)
506 struct tty_struct *tty = vc->port.tty;
512 * Note: SCROLLOCK will be set (cleared) by stop_tty (start_tty);
513 * these routines are also activated by ^S/^Q.
514 * (And SCROLLOCK can also be set by the ioctl KDSKBLED.)
522 static void fn_num(struct vc_data *vc)
524 if (vc_kbd_mode(kbd, VC_APPLIC))
531 * Bind this to Shift-NumLock if you work in application keypad mode
532 * but want to be able to change the NumLock flag.
533 * Bind this to NumLock if you prefer that the NumLock key always
534 * changes the NumLock flag.
536 static void fn_bare_num(struct vc_data *vc)
539 chg_vc_kbd_led(kbd, VC_NUMLOCK);
542 static void fn_lastcons(struct vc_data *vc)
544 /* switch to the last used console, ChN */
545 set_console(last_console);
548 static void fn_dec_console(struct vc_data *vc)
550 int i, cur = fg_console;
552 /* Currently switching? Queue this next switch relative to that. */
553 if (want_console != -1)
556 for (i = cur - 1; i != cur; i--) {
558 i = MAX_NR_CONSOLES - 1;
559 if (vc_cons_allocated(i))
565 static void fn_inc_console(struct vc_data *vc)
567 int i, cur = fg_console;
569 /* Currently switching? Queue this next switch relative to that. */
570 if (want_console != -1)
573 for (i = cur+1; i != cur; i++) {
574 if (i == MAX_NR_CONSOLES)
576 if (vc_cons_allocated(i))
582 static void fn_send_intr(struct vc_data *vc)
584 struct tty_struct *tty = vc->port.tty;
588 tty_insert_flip_char(tty, 0, TTY_BREAK);
589 tty_schedule_flip(tty);
592 static void fn_scroll_forw(struct vc_data *vc)
597 static void fn_scroll_back(struct vc_data *vc)
602 static void fn_show_mem(struct vc_data *vc)
607 static void fn_show_state(struct vc_data *vc)
612 static void fn_boot_it(struct vc_data *vc)
617 static void fn_compose(struct vc_data *vc)
619 dead_key_next = true;
622 static void fn_spawn_con(struct vc_data *vc)
624 spin_lock(&vt_spawn_con.lock);
625 if (vt_spawn_con.pid)
626 if (kill_pid(vt_spawn_con.pid, vt_spawn_con.sig, 1)) {
627 put_pid(vt_spawn_con.pid);
628 vt_spawn_con.pid = NULL;
630 spin_unlock(&vt_spawn_con.lock);
633 static void fn_SAK(struct vc_data *vc)
635 struct work_struct *SAK_work = &vc_cons[fg_console].SAK_work;
636 schedule_work(SAK_work);
639 static void fn_null(struct vc_data *vc)
641 do_compute_shiftstate();
645 * Special key handlers
647 static void k_ignore(struct vc_data *vc, unsigned char value, char up_flag)
651 static void k_spec(struct vc_data *vc, unsigned char value, char up_flag)
655 if (value >= ARRAY_SIZE(fn_handler))
657 if ((kbd->kbdmode == VC_RAW ||
658 kbd->kbdmode == VC_MEDIUMRAW ||
659 kbd->kbdmode == VC_OFF) &&
660 value != KVAL(K_SAK))
661 return; /* SAK is allowed even in raw mode */
662 fn_handler[value](vc);
665 static void k_lowercase(struct vc_data *vc, unsigned char value, char up_flag)
667 pr_err("k_lowercase was called - impossible\n");
670 static void k_unicode(struct vc_data *vc, unsigned int value, char up_flag)
673 return; /* no action, if this is a key release */
676 value = handle_diacr(vc, value);
679 dead_key_next = false;
683 if (kbd->kbdmode == VC_UNICODE)
686 int c = conv_uni_to_8bit(value);
693 * Handle dead key. Note that we now may have several
694 * dead keys modifying the same character. Very useful
697 static void k_deadunicode(struct vc_data *vc, unsigned int value, char up_flag)
702 diacr = (diacr ? handle_diacr(vc, value) : value);
705 static void k_self(struct vc_data *vc, unsigned char value, char up_flag)
707 k_unicode(vc, conv_8bit_to_uni(value), up_flag);
710 static void k_dead2(struct vc_data *vc, unsigned char value, char up_flag)
712 k_deadunicode(vc, value, up_flag);
716 * Obsolete - for backwards compatibility only
718 static void k_dead(struct vc_data *vc, unsigned char value, char up_flag)
720 static const unsigned char ret_diacr[NR_DEAD] = {'`', '\'', '^', '~', '"', ',' };
722 k_deadunicode(vc, ret_diacr[value], up_flag);
725 static void k_cons(struct vc_data *vc, unsigned char value, char up_flag)
733 static void k_fn(struct vc_data *vc, unsigned char value, char up_flag)
738 if ((unsigned)value < ARRAY_SIZE(func_table)) {
739 if (func_table[value])
740 puts_queue(vc, func_table[value]);
742 pr_err("k_fn called with value=%d\n", value);
745 static void k_cur(struct vc_data *vc, unsigned char value, char up_flag)
747 static const char cur_chars[] = "BDCA";
752 applkey(vc, cur_chars[value], vc_kbd_mode(kbd, VC_CKMODE));
755 static void k_pad(struct vc_data *vc, unsigned char value, char up_flag)
757 static const char pad_chars[] = "0123456789+-*/\015,.?()#";
758 static const char app_map[] = "pqrstuvwxylSRQMnnmPQS";
761 return; /* no action, if this is a key release */
763 /* kludge... shift forces cursor/number keys */
764 if (vc_kbd_mode(kbd, VC_APPLIC) && !shift_down[KG_SHIFT]) {
765 applkey(vc, app_map[value], 1);
769 if (!vc_kbd_led(kbd, VC_NUMLOCK)) {
774 k_fn(vc, KVAL(K_REMOVE), 0);
777 k_fn(vc, KVAL(K_INSERT), 0);
780 k_fn(vc, KVAL(K_SELECT), 0);
783 k_cur(vc, KVAL(K_DOWN), 0);
786 k_fn(vc, KVAL(K_PGDN), 0);
789 k_cur(vc, KVAL(K_LEFT), 0);
792 k_cur(vc, KVAL(K_RIGHT), 0);
795 k_fn(vc, KVAL(K_FIND), 0);
798 k_cur(vc, KVAL(K_UP), 0);
801 k_fn(vc, KVAL(K_PGUP), 0);
804 applkey(vc, 'G', vc_kbd_mode(kbd, VC_APPLIC));
809 put_queue(vc, pad_chars[value]);
810 if (value == KVAL(K_PENTER) && vc_kbd_mode(kbd, VC_CRLF))
814 static void k_shift(struct vc_data *vc, unsigned char value, char up_flag)
816 int old_state = shift_state;
822 * a CapsShift key acts like Shift but undoes CapsLock
824 if (value == KVAL(K_CAPSSHIFT)) {
825 value = KVAL(K_SHIFT);
827 clr_vc_kbd_led(kbd, VC_CAPSLOCK);
832 * handle the case that two shift or control
833 * keys are depressed simultaneously
835 if (shift_down[value])
840 if (shift_down[value])
841 shift_state |= (1 << value);
843 shift_state &= ~(1 << value);
846 if (up_flag && shift_state != old_state && npadch != -1) {
847 if (kbd->kbdmode == VC_UNICODE)
850 put_queue(vc, npadch & 0xff);
855 static void k_meta(struct vc_data *vc, unsigned char value, char up_flag)
860 if (vc_kbd_mode(kbd, VC_META)) {
861 put_queue(vc, '\033');
862 put_queue(vc, value);
864 put_queue(vc, value | 0x80);
867 static void k_ascii(struct vc_data *vc, unsigned char value, char up_flag)
875 /* decimal input of code, while Alt depressed */
878 /* hexadecimal input of code, while AltGr depressed */
886 npadch = npadch * base + value;
889 static void k_lock(struct vc_data *vc, unsigned char value, char up_flag)
894 chg_vc_kbd_lock(kbd, value);
897 static void k_slock(struct vc_data *vc, unsigned char value, char up_flag)
899 k_shift(vc, value, up_flag);
903 chg_vc_kbd_slock(kbd, value);
904 /* try to make Alt, oops, AltGr and such work */
905 if (!key_maps[kbd->lockstate ^ kbd->slockstate]) {
907 chg_vc_kbd_slock(kbd, value);
911 /* by default, 300ms interval for combination release */
912 static unsigned brl_timeout = 300;
913 MODULE_PARM_DESC(brl_timeout, "Braille keys release delay in ms (0 for commit on first key release)");
914 module_param(brl_timeout, uint, 0644);
916 static unsigned brl_nbchords = 1;
917 MODULE_PARM_DESC(brl_nbchords, "Number of chords that produce a braille pattern (0 for dead chords)");
918 module_param(brl_nbchords, uint, 0644);
920 static void k_brlcommit(struct vc_data *vc, unsigned int pattern, char up_flag)
922 static unsigned long chords;
923 static unsigned committed;
926 k_deadunicode(vc, BRL_UC_ROW | pattern, up_flag);
928 committed |= pattern;
930 if (chords == brl_nbchords) {
931 k_unicode(vc, BRL_UC_ROW | committed, up_flag);
938 static void k_brl(struct vc_data *vc, unsigned char value, char up_flag)
940 static unsigned pressed, committing;
941 static unsigned long releasestart;
943 if (kbd->kbdmode != VC_UNICODE) {
945 pr_warning("keyboard mode must be unicode for braille patterns\n");
950 k_unicode(vc, BRL_UC_ROW, up_flag);
958 pressed |= 1 << (value - 1);
960 committing = pressed;
961 } else if (brl_timeout) {
964 releasestart + msecs_to_jiffies(brl_timeout))) {
965 committing = pressed;
966 releasestart = jiffies;
968 pressed &= ~(1 << (value - 1));
969 if (!pressed && committing) {
970 k_brlcommit(vc, committing, 0);
975 k_brlcommit(vc, committing, 0);
978 pressed &= ~(1 << (value - 1));
983 * The leds display either (i) the status of NumLock, CapsLock, ScrollLock,
984 * or (ii) whatever pattern of lights people want to show using KDSETLED,
985 * or (iii) specified bits of specified words in kernel memory.
987 unsigned char getledstate(void)
992 void setledstate(struct kbd_struct *kbd, unsigned int led)
995 spin_lock_irqsave(&kbd_event_lock, flags);
998 kbd->ledmode = LED_SHOW_IOCTL;
1000 kbd->ledmode = LED_SHOW_FLAGS;
1003 spin_unlock_irqrestore(&kbd_event_lock, flags);
1006 static inline unsigned char getleds(void)
1008 struct kbd_struct *kbd = kbd_table + fg_console;
1012 if (kbd->ledmode == LED_SHOW_IOCTL)
1015 leds = kbd->ledflagstate;
1017 if (kbd->ledmode == LED_SHOW_MEM) {
1018 for (i = 0; i < 3; i++)
1019 if (ledptrs[i].valid) {
1020 if (*ledptrs[i].addr & ledptrs[i].mask)
1029 static int kbd_update_leds_helper(struct input_handle *handle, void *data)
1031 unsigned char leds = *(unsigned char *)data;
1033 if (test_bit(EV_LED, handle->dev->evbit)) {
1034 input_inject_event(handle, EV_LED, LED_SCROLLL, !!(leds & 0x01));
1035 input_inject_event(handle, EV_LED, LED_NUML, !!(leds & 0x02));
1036 input_inject_event(handle, EV_LED, LED_CAPSL, !!(leds & 0x04));
1037 input_inject_event(handle, EV_SYN, SYN_REPORT, 0);
1044 * vt_get_leds - helper for braille console
1045 * @console: console to read
1046 * @flag: flag we want to check
1048 * Check the status of a keyboard led flag and report it back
1050 int vt_get_leds(int console, int flag)
1052 unsigned long flags;
1053 struct kbd_struct * kbd = kbd_table + console;
1056 spin_lock_irqsave(&kbd_event_lock, flags);
1057 ret = vc_kbd_led(kbd, flag);
1058 spin_unlock_irqrestore(&kbd_event_lock, flags);
1062 EXPORT_SYMBOL_GPL(vt_get_leds);
1065 * vt_set_led_state - set LED state of a console
1066 * @console: console to set
1069 * Set the LEDs on a console. This is a wrapper for the VT layer
1070 * so that we can keep kbd knowledge internal
1072 void vt_set_led_state(int console, int leds)
1074 struct kbd_struct * kbd = kbd_table + console;
1075 setledstate(kbd, leds);
1079 * vt_kbd_con_start - Keyboard side of console start
1082 * Handle console start. This is a wrapper for the VT layer
1083 * so that we can keep kbd knowledge internal
1085 * FIXME: We eventually need to hold the kbd lock here to protect
1086 * the LED updating. We can't do it yet because fn_hold calls stop_tty
1087 * and start_tty under the kbd_event_lock, while normal tty paths
1088 * don't hold the lock. We probably need to split out an LED lock
1089 * but not during an -rc release!
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 * FIXME: We eventually need to hold the kbd lock here to protect
1109 * the LED updating. We can't do it yet because fn_hold calls stop_tty
1110 * and start_tty under the kbd_event_lock, while normal tty paths
1111 * don't hold the lock. We probably need to split out an LED lock
1112 * but not during an -rc release!
1114 void vt_kbd_con_stop(int console)
1116 struct kbd_struct * kbd = kbd_table + console;
1117 /* unsigned long flags; */
1118 /* spin_lock_irqsave(&kbd_event_lock, flags); */
1119 set_vc_kbd_led(kbd, VC_SCROLLOCK);
1121 /* spin_unlock_irqrestore(&kbd_event_lock, flags); */
1125 * This is the tasklet that updates LED state on all keyboards
1126 * attached to the box. The reason we use tasklet is that we
1127 * need to handle the scenario when keyboard handler is not
1128 * registered yet but we already getting updates from the VT to
1131 static void kbd_bh(unsigned long dummy)
1133 unsigned char leds = getleds();
1135 if (leds != ledstate) {
1136 input_handler_for_each_handle(&kbd_handler, &leds,
1137 kbd_update_leds_helper);
1142 DECLARE_TASKLET_DISABLED(keyboard_tasklet, kbd_bh, 0);
1144 #if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_ALPHA) ||\
1145 defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_SPARC) ||\
1146 defined(CONFIG_PARISC) || defined(CONFIG_SUPERH) ||\
1147 (defined(CONFIG_ARM) && defined(CONFIG_KEYBOARD_ATKBD) && !defined(CONFIG_ARCH_RPC)) ||\
1148 defined(CONFIG_AVR32)
1150 #define HW_RAW(dev) (test_bit(EV_MSC, dev->evbit) && test_bit(MSC_RAW, dev->mscbit) &&\
1151 ((dev)->id.bustype == BUS_I8042) && ((dev)->id.vendor == 0x0001) && ((dev)->id.product == 0x0001))
1153 static const unsigned short x86_keycodes[256] =
1154 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
1155 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
1156 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
1157 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
1158 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
1159 80, 81, 82, 83, 84,118, 86, 87, 88,115,120,119,121,112,123, 92,
1160 284,285,309, 0,312, 91,327,328,329,331,333,335,336,337,338,339,
1161 367,288,302,304,350, 89,334,326,267,126,268,269,125,347,348,349,
1162 360,261,262,263,268,376,100,101,321,316,373,286,289,102,351,355,
1163 103,104,105,275,287,279,258,106,274,107,294,364,358,363,362,361,
1164 291,108,381,281,290,272,292,305,280, 99,112,257,306,359,113,114,
1165 264,117,271,374,379,265,266, 93, 94, 95, 85,259,375,260, 90,116,
1166 377,109,111,277,278,282,283,295,296,297,299,300,301,293,303,307,
1167 308,310,313,314,315,317,318,319,320,357,322,323,324,325,276,330,
1168 332,340,365,342,343,344,345,346,356,270,341,368,369,370,371,372 };
1171 static int sparc_l1_a_state;
1172 extern void sun_do_break(void);
1175 static int emulate_raw(struct vc_data *vc, unsigned int keycode,
1176 unsigned char up_flag)
1183 put_queue(vc, 0xe1);
1184 put_queue(vc, 0x1d | up_flag);
1185 put_queue(vc, 0x45 | up_flag);
1190 put_queue(vc, 0xf2);
1195 put_queue(vc, 0xf1);
1200 * Real AT keyboards (that's what we're trying
1201 * to emulate here emit 0xe0 0x2a 0xe0 0x37 when
1202 * pressing PrtSc/SysRq alone, but simply 0x54
1203 * when pressing Alt+PrtSc/SysRq.
1205 if (test_bit(KEY_LEFTALT, key_down) ||
1206 test_bit(KEY_RIGHTALT, key_down)) {
1207 put_queue(vc, 0x54 | up_flag);
1209 put_queue(vc, 0xe0);
1210 put_queue(vc, 0x2a | up_flag);
1211 put_queue(vc, 0xe0);
1212 put_queue(vc, 0x37 | up_flag);
1220 code = x86_keycodes[keycode];
1225 put_queue(vc, 0xe0);
1226 put_queue(vc, (code & 0x7f) | up_flag);
1236 #define HW_RAW(dev) 0
1238 static int emulate_raw(struct vc_data *vc, unsigned int keycode, unsigned char up_flag)
1243 put_queue(vc, keycode | up_flag);
1248 static void kbd_rawcode(unsigned char data)
1250 struct vc_data *vc = vc_cons[fg_console].d;
1252 kbd = kbd_table + vc->vc_num;
1253 if (kbd->kbdmode == VC_RAW)
1254 put_queue(vc, data);
1257 static void kbd_keycode(unsigned int keycode, int down, int hw_raw)
1259 struct vc_data *vc = vc_cons[fg_console].d;
1260 unsigned short keysym, *key_map;
1263 struct tty_struct *tty;
1265 struct keyboard_notifier_param param = { .vc = vc, .value = keycode, .down = down };
1270 if (tty && (!tty->driver_data)) {
1271 /* No driver data? Strange. Okay we fix it then. */
1272 tty->driver_data = vc;
1275 kbd = kbd_table + vc->vc_num;
1278 if (keycode == KEY_STOP)
1279 sparc_l1_a_state = down;
1284 raw_mode = (kbd->kbdmode == VC_RAW);
1285 if (raw_mode && !hw_raw)
1286 if (emulate_raw(vc, keycode, !down << 7))
1287 if (keycode < BTN_MISC && printk_ratelimit())
1288 pr_warning("can't emulate rawmode for keycode %d\n",
1292 if (keycode == KEY_A && sparc_l1_a_state) {
1293 sparc_l1_a_state = false;
1298 if (kbd->kbdmode == VC_MEDIUMRAW) {
1300 * This is extended medium raw mode, with keys above 127
1301 * encoded as 0, high 7 bits, low 7 bits, with the 0 bearing
1302 * the 'up' flag if needed. 0 is reserved, so this shouldn't
1303 * interfere with anything else. The two bytes after 0 will
1304 * always have the up flag set not to interfere with older
1305 * applications. This allows for 16384 different keycodes,
1306 * which should be enough.
1308 if (keycode < 128) {
1309 put_queue(vc, keycode | (!down << 7));
1311 put_queue(vc, !down << 7);
1312 put_queue(vc, (keycode >> 7) | 0x80);
1313 put_queue(vc, keycode | 0x80);
1319 set_bit(keycode, key_down);
1321 clear_bit(keycode, key_down);
1324 (!vc_kbd_mode(kbd, VC_REPEAT) ||
1325 (tty && !L_ECHO(tty) && tty_chars_in_buffer(tty)))) {
1327 * Don't repeat a key if the input buffers are not empty and the
1328 * characters get aren't echoed locally. This makes key repeat
1329 * usable with slow applications and under heavy loads.
1334 param.shift = shift_final = (shift_state | kbd->slockstate) ^ kbd->lockstate;
1335 param.ledstate = kbd->ledflagstate;
1336 key_map = key_maps[shift_final];
1338 rc = atomic_notifier_call_chain(&keyboard_notifier_list,
1339 KBD_KEYCODE, ¶m);
1340 if (rc == NOTIFY_STOP || !key_map) {
1341 atomic_notifier_call_chain(&keyboard_notifier_list,
1342 KBD_UNBOUND_KEYCODE, ¶m);
1343 do_compute_shiftstate();
1344 kbd->slockstate = 0;
1348 if (keycode < NR_KEYS)
1349 keysym = key_map[keycode];
1350 else if (keycode >= KEY_BRL_DOT1 && keycode <= KEY_BRL_DOT8)
1351 keysym = U(K(KT_BRL, keycode - KEY_BRL_DOT1 + 1));
1355 type = KTYP(keysym);
1358 param.value = keysym;
1359 rc = atomic_notifier_call_chain(&keyboard_notifier_list,
1360 KBD_UNICODE, ¶m);
1361 if (rc != NOTIFY_STOP)
1362 if (down && !raw_mode)
1363 to_utf8(vc, keysym);
1369 if (type == KT_LETTER) {
1371 if (vc_kbd_led(kbd, VC_CAPSLOCK)) {
1372 key_map = key_maps[shift_final ^ (1 << KG_SHIFT)];
1374 keysym = key_map[keycode];
1378 param.value = keysym;
1379 rc = atomic_notifier_call_chain(&keyboard_notifier_list,
1380 KBD_KEYSYM, ¶m);
1381 if (rc == NOTIFY_STOP)
1384 if ((raw_mode || kbd->kbdmode == VC_OFF) && type != KT_SPEC && type != KT_SHIFT)
1387 (*k_handler[type])(vc, keysym & 0xff, !down);
1389 param.ledstate = kbd->ledflagstate;
1390 atomic_notifier_call_chain(&keyboard_notifier_list, KBD_POST_KEYSYM, ¶m);
1392 if (type != KT_SLOCK)
1393 kbd->slockstate = 0;
1396 static void kbd_event(struct input_handle *handle, unsigned int event_type,
1397 unsigned int event_code, int value)
1399 /* We are called with interrupts disabled, just take the lock */
1400 spin_lock(&kbd_event_lock);
1402 if (event_type == EV_MSC && event_code == MSC_RAW && HW_RAW(handle->dev))
1404 if (event_type == EV_KEY)
1405 kbd_keycode(event_code, value, HW_RAW(handle->dev));
1407 spin_unlock(&kbd_event_lock);
1409 tasklet_schedule(&keyboard_tasklet);
1410 do_poke_blanked_console = 1;
1411 schedule_console_callback();
1414 static bool kbd_match(struct input_handler *handler, struct input_dev *dev)
1418 if (test_bit(EV_SND, dev->evbit))
1421 if (test_bit(EV_KEY, dev->evbit)) {
1422 for (i = KEY_RESERVED; i < BTN_MISC; i++)
1423 if (test_bit(i, dev->keybit))
1425 for (i = KEY_BRL_DOT1; i <= KEY_BRL_DOT10; i++)
1426 if (test_bit(i, dev->keybit))
1434 * When a keyboard (or other input device) is found, the kbd_connect
1435 * function is called. The function then looks at the device, and if it
1436 * likes it, it can open it and get events from it. In this (kbd_connect)
1437 * function, we should decide which VT to bind that keyboard to initially.
1439 static int kbd_connect(struct input_handler *handler, struct input_dev *dev,
1440 const struct input_device_id *id)
1442 struct input_handle *handle;
1445 handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
1450 handle->handler = handler;
1451 handle->name = "kbd";
1453 error = input_register_handle(handle);
1455 goto err_free_handle;
1457 error = input_open_device(handle);
1459 goto err_unregister_handle;
1463 err_unregister_handle:
1464 input_unregister_handle(handle);
1470 static void kbd_disconnect(struct input_handle *handle)
1472 input_close_device(handle);
1473 input_unregister_handle(handle);
1478 * Start keyboard handler on the new keyboard by refreshing LED state to
1479 * match the rest of the system.
1481 static void kbd_start(struct input_handle *handle)
1483 tasklet_disable(&keyboard_tasklet);
1485 if (ledstate != 0xff)
1486 kbd_update_leds_helper(handle, &ledstate);
1488 tasklet_enable(&keyboard_tasklet);
1491 static const struct input_device_id kbd_ids[] = {
1493 .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
1494 .evbit = { BIT_MASK(EV_KEY) },
1498 .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
1499 .evbit = { BIT_MASK(EV_SND) },
1502 { }, /* Terminating entry */
1505 MODULE_DEVICE_TABLE(input, kbd_ids);
1507 static struct input_handler kbd_handler = {
1510 .connect = kbd_connect,
1511 .disconnect = kbd_disconnect,
1514 .id_table = kbd_ids,
1517 int __init kbd_init(void)
1522 for (i = 0; i < MAX_NR_CONSOLES; i++) {
1523 kbd_table[i].ledflagstate = kbd_defleds();
1524 kbd_table[i].default_ledflagstate = kbd_defleds();
1525 kbd_table[i].ledmode = LED_SHOW_FLAGS;
1526 kbd_table[i].lockstate = KBD_DEFLOCK;
1527 kbd_table[i].slockstate = 0;
1528 kbd_table[i].modeflags = KBD_DEFMODE;
1529 kbd_table[i].kbdmode = default_utf8 ? VC_UNICODE : VC_XLATE;
1532 error = input_register_handler(&kbd_handler);
1536 tasklet_enable(&keyboard_tasklet);
1537 tasklet_schedule(&keyboard_tasklet);
1542 /* Ioctl support code */
1545 * vt_do_diacrit - diacritical table updates
1546 * @cmd: ioctl request
1547 * @up: pointer to user data for ioctl
1548 * @perm: permissions check computed by caller
1550 * Update the diacritical tables atomically and safely. Lock them
1551 * against simultaneous keypresses
1553 int vt_do_diacrit(unsigned int cmd, void __user *up, int perm)
1555 struct kbdiacrs __user *a = up;
1556 unsigned long flags;
1563 struct kbdiacr *diacr;
1566 diacr = kmalloc(MAX_DIACR * sizeof(struct kbdiacr),
1571 /* Lock the diacriticals table, make a copy and then
1572 copy it after we unlock */
1573 spin_lock_irqsave(&kbd_event_lock, flags);
1575 asize = accent_table_size;
1576 for (i = 0; i < asize; i++) {
1577 diacr[i].diacr = conv_uni_to_8bit(
1578 accent_table[i].diacr);
1579 diacr[i].base = conv_uni_to_8bit(
1580 accent_table[i].base);
1581 diacr[i].result = conv_uni_to_8bit(
1582 accent_table[i].result);
1584 spin_unlock_irqrestore(&kbd_event_lock, flags);
1586 if (put_user(asize, &a->kb_cnt))
1588 else if (copy_to_user(a->kbdiacr, diacr,
1589 asize * sizeof(struct kbdiacr)))
1596 struct kbdiacrsuc __user *a = up;
1599 buf = kmalloc(MAX_DIACR * sizeof(struct kbdiacruc),
1604 /* Lock the diacriticals table, make a copy and then
1605 copy it after we unlock */
1606 spin_lock_irqsave(&kbd_event_lock, flags);
1608 asize = accent_table_size;
1609 memcpy(buf, accent_table, asize * sizeof(struct kbdiacruc));
1611 spin_unlock_irqrestore(&kbd_event_lock, flags);
1613 if (put_user(asize, &a->kb_cnt))
1615 else if (copy_to_user(a->kbdiacruc, buf,
1616 asize*sizeof(struct kbdiacruc)))
1624 struct kbdiacrs __user *a = up;
1625 struct kbdiacr *diacr = NULL;
1631 if (get_user(ct, &a->kb_cnt))
1633 if (ct >= MAX_DIACR)
1637 diacr = kmalloc(sizeof(struct kbdiacr) * ct,
1642 if (copy_from_user(diacr, a->kbdiacr,
1643 sizeof(struct kbdiacr) * ct)) {
1649 spin_lock_irqsave(&kbd_event_lock, flags);
1650 accent_table_size = ct;
1651 for (i = 0; i < ct; i++) {
1652 accent_table[i].diacr =
1653 conv_8bit_to_uni(diacr[i].diacr);
1654 accent_table[i].base =
1655 conv_8bit_to_uni(diacr[i].base);
1656 accent_table[i].result =
1657 conv_8bit_to_uni(diacr[i].result);
1659 spin_unlock_irqrestore(&kbd_event_lock, flags);
1666 struct kbdiacrsuc __user *a = up;
1673 if (get_user(ct, &a->kb_cnt))
1676 if (ct >= MAX_DIACR)
1680 buf = kmalloc(ct * sizeof(struct kbdiacruc),
1685 if (copy_from_user(buf, a->kbdiacruc,
1686 ct * sizeof(struct kbdiacruc))) {
1691 spin_lock_irqsave(&kbd_event_lock, flags);
1693 memcpy(accent_table, buf,
1694 ct * sizeof(struct kbdiacruc));
1695 accent_table_size = ct;
1696 spin_unlock_irqrestore(&kbd_event_lock, flags);
1705 * vt_do_kdskbmode - set keyboard mode ioctl
1706 * @console: the console to use
1707 * @arg: the requested mode
1709 * Update the keyboard mode bits while holding the correct locks.
1710 * Return 0 for success or an error code.
1712 int vt_do_kdskbmode(int console, unsigned int arg)
1714 struct kbd_struct * kbd = kbd_table + console;
1716 unsigned long flags;
1718 spin_lock_irqsave(&kbd_event_lock, flags);
1721 kbd->kbdmode = VC_RAW;
1724 kbd->kbdmode = VC_MEDIUMRAW;
1727 kbd->kbdmode = VC_XLATE;
1728 do_compute_shiftstate();
1731 kbd->kbdmode = VC_UNICODE;
1732 do_compute_shiftstate();
1735 kbd->kbdmode = VC_OFF;
1740 spin_unlock_irqrestore(&kbd_event_lock, flags);
1745 * vt_do_kdskbmeta - set keyboard meta state
1746 * @console: the console to use
1747 * @arg: the requested meta state
1749 * Update the keyboard meta bits while holding the correct locks.
1750 * Return 0 for success or an error code.
1752 int vt_do_kdskbmeta(int console, unsigned int arg)
1754 struct kbd_struct * kbd = kbd_table + console;
1756 unsigned long flags;
1758 spin_lock_irqsave(&kbd_event_lock, flags);
1761 clr_vc_kbd_mode(kbd, VC_META);
1764 set_vc_kbd_mode(kbd, VC_META);
1769 spin_unlock_irqrestore(&kbd_event_lock, flags);
1773 int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc,
1776 struct kbkeycode tmp;
1779 if (copy_from_user(&tmp, user_kbkc, sizeof(struct kbkeycode)))
1783 kc = getkeycode(tmp.scancode);
1785 kc = put_user(kc, &user_kbkc->keycode);
1790 kc = setkeycode(tmp.scancode, tmp.keycode);
1796 #define i (tmp.kb_index)
1797 #define s (tmp.kb_table)
1798 #define v (tmp.kb_value)
1800 int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm,
1803 struct kbd_struct * kbd = kbd_table + console;
1805 ushort *key_map, *new_map, val, ov;
1806 unsigned long flags;
1808 if (copy_from_user(&tmp, user_kbe, sizeof(struct kbentry)))
1811 if (!capable(CAP_SYS_TTY_CONFIG))
1816 /* Ensure another thread doesn't free it under us */
1817 spin_lock_irqsave(&kbd_event_lock, flags);
1818 key_map = key_maps[s];
1820 val = U(key_map[i]);
1821 if (kbd->kbdmode != VC_UNICODE && KTYP(val) >= NR_TYPES)
1824 val = (i ? K_HOLE : K_NOSUCHMAP);
1825 spin_unlock_irqrestore(&kbd_event_lock, flags);
1826 return put_user(val, &user_kbe->kb_value);
1830 if (!i && v == K_NOSUCHMAP) {
1831 spin_lock_irqsave(&kbd_event_lock, flags);
1832 /* deallocate map */
1833 key_map = key_maps[s];
1836 if (key_map[0] == U(K_ALLOCATED)) {
1841 spin_unlock_irqrestore(&kbd_event_lock, flags);
1845 if (KTYP(v) < NR_TYPES) {
1846 if (KVAL(v) > max_vals[KTYP(v)])
1849 if (kbd->kbdmode != VC_UNICODE)
1852 /* ++Geert: non-PC keyboards may generate keycode zero */
1853 #if !defined(__mc68000__) && !defined(__powerpc__)
1854 /* assignment to entry 0 only tests validity of args */
1859 new_map = kmalloc(sizeof(plain_map), GFP_KERNEL);
1862 spin_lock_irqsave(&kbd_event_lock, flags);
1863 key_map = key_maps[s];
1864 if (key_map == NULL) {
1867 if (keymap_count >= MAX_NR_OF_USER_KEYMAPS &&
1868 !capable(CAP_SYS_RESOURCE)) {
1869 spin_unlock_irqrestore(&kbd_event_lock, flags);
1873 key_maps[s] = new_map;
1875 key_map[0] = U(K_ALLOCATED);
1876 for (j = 1; j < NR_KEYS; j++)
1877 key_map[j] = U(K_HOLE);
1888 if (((ov == K_SAK) || (v == K_SAK)) && !capable(CAP_SYS_ADMIN)) {
1889 spin_unlock_irqrestore(&kbd_event_lock, flags);
1893 if (!s && (KTYP(ov) == KT_SHIFT || KTYP(v) == KT_SHIFT))
1894 do_compute_shiftstate();
1896 spin_unlock_irqrestore(&kbd_event_lock, flags);
1905 /* FIXME: This one needs untangling and locking */
1906 int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm)
1908 struct kbsentry *kbs;
1914 char *first_free, *fj, *fnw;
1918 if (!capable(CAP_SYS_TTY_CONFIG))
1921 kbs = kmalloc(sizeof(*kbs), GFP_KERNEL);
1927 /* we mostly copy too much here (512bytes), but who cares ;) */
1928 if (copy_from_user(kbs, user_kdgkb, sizeof(struct kbsentry))) {
1932 kbs->kb_string[sizeof(kbs->kb_string)-1] = '\0';
1937 sz = sizeof(kbs->kb_string) - 1; /* sz should have been
1939 up = user_kdgkb->kb_string;
1942 for ( ; *p && sz; p++, sz--)
1943 if (put_user(*p, up++)) {
1947 if (put_user('\0', up)) {
1952 return ((p && *p) ? -EOVERFLOW : 0);
1960 first_free = funcbufptr + (funcbufsize - funcbufleft);
1961 for (j = i+1; j < MAX_NR_FUNC && !func_table[j]; j++)
1963 if (j < MAX_NR_FUNC)
1968 delta = (q ? -strlen(q) : 1) + strlen(kbs->kb_string);
1969 if (delta <= funcbufleft) { /* it fits in current buf */
1970 if (j < MAX_NR_FUNC) {
1971 memmove(fj + delta, fj, first_free - fj);
1972 for (k = j; k < MAX_NR_FUNC; k++)
1974 func_table[k] += delta;
1978 funcbufleft -= delta;
1979 } else { /* allocate a larger buffer */
1981 while (sz < funcbufsize - funcbufleft + delta)
1983 fnw = kmalloc(sz, GFP_KERNEL);
1991 if (fj > funcbufptr)
1992 memmove(fnw, funcbufptr, fj - funcbufptr);
1993 for (k = 0; k < j; k++)
1995 func_table[k] = fnw + (func_table[k] - funcbufptr);
1997 if (first_free > fj) {
1998 memmove(fnw + (fj - funcbufptr) + delta, fj, first_free - fj);
1999 for (k = j; k < MAX_NR_FUNC; k++)
2001 func_table[k] = fnw + (func_table[k] - funcbufptr) + delta;
2003 if (funcbufptr != func_buf)
2006 funcbufleft = funcbufleft - delta + sz - funcbufsize;
2009 strcpy(func_table[i], kbs->kb_string);
2018 int vt_do_kdskled(int console, int cmd, unsigned long arg, int perm)
2020 struct kbd_struct * kbd = kbd_table + console;
2021 unsigned long flags;
2022 unsigned char ucval;
2025 /* the ioctls below read/set the flags usually shown in the leds */
2026 /* don't use them - they will go away without warning */
2028 spin_lock_irqsave(&kbd_event_lock, flags);
2029 ucval = kbd->ledflagstate | (kbd->default_ledflagstate << 4);
2030 spin_unlock_irqrestore(&kbd_event_lock, flags);
2031 return put_user(ucval, (char __user *)arg);
2038 spin_lock_irqsave(&kbd_event_lock, flags);
2039 kbd->ledflagstate = (arg & 7);
2040 kbd->default_ledflagstate = ((arg >> 4) & 7);
2042 spin_unlock_irqrestore(&kbd_event_lock, flags);
2045 /* the ioctls below only set the lights, not the functions */
2046 /* for those, see KDGKBLED and KDSKBLED above */
2048 ucval = getledstate();
2049 return put_user(ucval, (char __user *)arg);
2054 setledstate(kbd, arg);
2057 return -ENOIOCTLCMD;
2060 int vt_do_kdgkbmode(int console)
2062 struct kbd_struct * kbd = kbd_table + console;
2063 /* This is a spot read so needs no locking */
2064 switch (kbd->kbdmode) {
2079 * vt_do_kdgkbmeta - report meta status
2080 * @console: console to report
2082 * Report the meta flag status of this console
2084 int vt_do_kdgkbmeta(int console)
2086 struct kbd_struct * kbd = kbd_table + console;
2087 /* Again a spot read so no locking */
2088 return vc_kbd_mode(kbd, VC_META) ? K_ESCPREFIX : K_METABIT;
2092 * vt_reset_unicode - reset the unicode status
2093 * @console: console being reset
2095 * Restore the unicode console state to its default
2097 void vt_reset_unicode(int console)
2099 unsigned long flags;
2101 spin_lock_irqsave(&kbd_event_lock, flags);
2102 kbd_table[console].kbdmode = default_utf8 ? VC_UNICODE : VC_XLATE;
2103 spin_unlock_irqrestore(&kbd_event_lock, flags);
2107 * vt_get_shiftstate - shift bit state
2109 * Report the shift bits from the keyboard state. We have to export
2110 * this to support some oddities in the vt layer.
2112 int vt_get_shift_state(void)
2114 /* Don't lock as this is a transient report */
2119 * vt_reset_keyboard - reset keyboard state
2120 * @console: console to reset
2122 * Reset the keyboard bits for a console as part of a general console
2125 void vt_reset_keyboard(int console)
2127 struct kbd_struct * kbd = kbd_table + console;
2128 unsigned long flags;
2130 spin_lock_irqsave(&kbd_event_lock, flags);
2131 set_vc_kbd_mode(kbd, VC_REPEAT);
2132 clr_vc_kbd_mode(kbd, VC_CKMODE);
2133 clr_vc_kbd_mode(kbd, VC_APPLIC);
2134 clr_vc_kbd_mode(kbd, VC_CRLF);
2136 kbd->slockstate = 0;
2137 kbd->ledmode = LED_SHOW_FLAGS;
2138 kbd->ledflagstate = kbd->default_ledflagstate;
2139 /* do not do set_leds here because this causes an endless tasklet loop
2140 when the keyboard hasn't been initialized yet */
2141 spin_unlock_irqrestore(&kbd_event_lock, flags);
2145 * vt_get_kbd_mode_bit - read keyboard status bits
2146 * @console: console to read from
2147 * @bit: mode bit to read
2149 * Report back a vt mode bit. We do this without locking so the
2150 * caller must be sure that there are no synchronization needs
2153 int vt_get_kbd_mode_bit(int console, int bit)
2155 struct kbd_struct * kbd = kbd_table + console;
2156 return vc_kbd_mode(kbd, bit);
2160 * vt_set_kbd_mode_bit - read keyboard status bits
2161 * @console: console to read from
2162 * @bit: mode bit to read
2164 * Set a vt mode bit. We do this without locking so the
2165 * caller must be sure that there are no synchronization needs
2168 void vt_set_kbd_mode_bit(int console, int bit)
2170 struct kbd_struct * kbd = kbd_table + console;
2171 unsigned long flags;
2173 spin_lock_irqsave(&kbd_event_lock, flags);
2174 set_vc_kbd_mode(kbd, bit);
2175 spin_unlock_irqrestore(&kbd_event_lock, flags);
2179 * vt_clr_kbd_mode_bit - read keyboard status bits
2180 * @console: console to read from
2181 * @bit: mode bit to read
2183 * Report back a vt mode bit. We do this without locking so the
2184 * caller must be sure that there are no synchronization needs
2187 void vt_clr_kbd_mode_bit(int console, int bit)
2189 struct kbd_struct * kbd = kbd_table + console;
2190 unsigned long flags;
2192 spin_lock_irqsave(&kbd_event_lock, flags);
2193 clr_vc_kbd_mode(kbd, bit);
2194 spin_unlock_irqrestore(&kbd_event_lock, flags);