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 * FIXME: We eventually need to hold the kbd lock here to protect
1092 * the LED updating. We can't do it yet because fn_hold calls stop_tty
1093 * and start_tty under the kbd_event_lock, while normal tty paths
1094 * don't hold the lock. We probably need to split out an LED lock
1095 * but not during an -rc release!
1097 void vt_kbd_con_start(int console)
1099 struct kbd_struct * kbd = kbd_table + console;
1100 /* unsigned long flags; */
1101 /* spin_lock_irqsave(&kbd_event_lock, flags); */
1102 clr_vc_kbd_led(kbd, VC_SCROLLOCK);
1104 /* spin_unlock_irqrestore(&kbd_event_lock, flags); */
1108 * vt_kbd_con_stop - Keyboard side of console stop
1111 * Handle console stop. This is a wrapper for the VT layer
1112 * so that we can keep kbd knowledge internal
1114 * FIXME: We eventually need to hold the kbd lock here to protect
1115 * the LED updating. We can't do it yet because fn_hold calls stop_tty
1116 * and start_tty under the kbd_event_lock, while normal tty paths
1117 * don't hold the lock. We probably need to split out an LED lock
1118 * but not during an -rc release!
1120 void vt_kbd_con_stop(int console)
1122 struct kbd_struct * kbd = kbd_table + console;
1123 /* unsigned long flags; */
1124 /* spin_lock_irqsave(&kbd_event_lock, flags); */
1125 set_vc_kbd_led(kbd, VC_SCROLLOCK);
1127 /* spin_unlock_irqrestore(&kbd_event_lock, flags); */
1131 * This is the tasklet that updates LED state on all keyboards
1132 * attached to the box. The reason we use tasklet is that we
1133 * need to handle the scenario when keyboard handler is not
1134 * registered yet but we already getting updates from the VT to
1137 static void kbd_bh(unsigned long dummy)
1139 unsigned char leds = getleds();
1141 if (leds != ledstate) {
1142 input_handler_for_each_handle(&kbd_handler, &leds,
1143 kbd_update_leds_helper);
1148 DECLARE_TASKLET_DISABLED(keyboard_tasklet, kbd_bh, 0);
1150 #if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_ALPHA) ||\
1151 defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_SPARC) ||\
1152 defined(CONFIG_PARISC) || defined(CONFIG_SUPERH) ||\
1153 (defined(CONFIG_ARM) && defined(CONFIG_KEYBOARD_ATKBD) && !defined(CONFIG_ARCH_RPC)) ||\
1154 defined(CONFIG_AVR32)
1156 #define HW_RAW(dev) (test_bit(EV_MSC, dev->evbit) && test_bit(MSC_RAW, dev->mscbit) &&\
1157 ((dev)->id.bustype == BUS_I8042) && ((dev)->id.vendor == 0x0001) && ((dev)->id.product == 0x0001))
1159 static const unsigned short x86_keycodes[256] =
1160 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
1161 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
1162 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
1163 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
1164 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
1165 80, 81, 82, 83, 84,118, 86, 87, 88,115,120,119,121,112,123, 92,
1166 284,285,309, 0,312, 91,327,328,329,331,333,335,336,337,338,339,
1167 367,288,302,304,350, 89,334,326,267,126,268,269,125,347,348,349,
1168 360,261,262,263,268,376,100,101,321,316,373,286,289,102,351,355,
1169 103,104,105,275,287,279,258,106,274,107,294,364,358,363,362,361,
1170 291,108,381,281,290,272,292,305,280, 99,112,257,306,359,113,114,
1171 264,117,271,374,379,265,266, 93, 94, 95, 85,259,375,260, 90,116,
1172 377,109,111,277,278,282,283,295,296,297,299,300,301,293,303,307,
1173 308,310,313,314,315,317,318,319,320,357,322,323,324,325,276,330,
1174 332,340,365,342,343,344,345,346,356,270,341,368,369,370,371,372 };
1177 static int sparc_l1_a_state;
1178 extern void sun_do_break(void);
1181 static int emulate_raw(struct vc_data *vc, unsigned int keycode,
1182 unsigned char up_flag)
1189 put_queue(vc, 0xe1);
1190 put_queue(vc, 0x1d | up_flag);
1191 put_queue(vc, 0x45 | up_flag);
1196 put_queue(vc, 0xf2);
1201 put_queue(vc, 0xf1);
1206 * Real AT keyboards (that's what we're trying
1207 * to emulate here emit 0xe0 0x2a 0xe0 0x37 when
1208 * pressing PrtSc/SysRq alone, but simply 0x54
1209 * when pressing Alt+PrtSc/SysRq.
1211 if (test_bit(KEY_LEFTALT, key_down) ||
1212 test_bit(KEY_RIGHTALT, key_down)) {
1213 put_queue(vc, 0x54 | up_flag);
1215 put_queue(vc, 0xe0);
1216 put_queue(vc, 0x2a | up_flag);
1217 put_queue(vc, 0xe0);
1218 put_queue(vc, 0x37 | up_flag);
1226 code = x86_keycodes[keycode];
1231 put_queue(vc, 0xe0);
1232 put_queue(vc, (code & 0x7f) | up_flag);
1242 #define HW_RAW(dev) 0
1244 static int emulate_raw(struct vc_data *vc, unsigned int keycode, unsigned char up_flag)
1249 put_queue(vc, keycode | up_flag);
1254 static void kbd_rawcode(unsigned char data)
1256 struct vc_data *vc = vc_cons[fg_console].d;
1258 kbd = kbd_table + vc->vc_num;
1259 if (kbd->kbdmode == VC_RAW)
1260 put_queue(vc, data);
1263 static void kbd_keycode(unsigned int keycode, int down, int hw_raw)
1265 struct vc_data *vc = vc_cons[fg_console].d;
1266 unsigned short keysym, *key_map;
1269 struct tty_struct *tty;
1271 struct keyboard_notifier_param param = { .vc = vc, .value = keycode, .down = down };
1276 if (tty && (!tty->driver_data)) {
1277 /* No driver data? Strange. Okay we fix it then. */
1278 tty->driver_data = vc;
1281 kbd = kbd_table + vc->vc_num;
1284 if (keycode == KEY_STOP)
1285 sparc_l1_a_state = down;
1290 raw_mode = (kbd->kbdmode == VC_RAW);
1291 if (raw_mode && !hw_raw)
1292 if (emulate_raw(vc, keycode, !down << 7))
1293 if (keycode < BTN_MISC && printk_ratelimit())
1294 pr_warning("can't emulate rawmode for keycode %d\n",
1297 /* This code has to be redone for some non-x86 platforms */
1298 if (down == 1 && (keycode == 0x3c || keycode == 0x01)) {
1299 /* F2 and ESC on PC keyboard */
1300 if (splash_verbose())
1305 if (keycode == KEY_A && sparc_l1_a_state) {
1306 sparc_l1_a_state = false;
1311 if (kbd->kbdmode == VC_MEDIUMRAW) {
1313 * This is extended medium raw mode, with keys above 127
1314 * encoded as 0, high 7 bits, low 7 bits, with the 0 bearing
1315 * the 'up' flag if needed. 0 is reserved, so this shouldn't
1316 * interfere with anything else. The two bytes after 0 will
1317 * always have the up flag set not to interfere with older
1318 * applications. This allows for 16384 different keycodes,
1319 * which should be enough.
1321 if (keycode < 128) {
1322 put_queue(vc, keycode | (!down << 7));
1324 put_queue(vc, !down << 7);
1325 put_queue(vc, (keycode >> 7) | 0x80);
1326 put_queue(vc, keycode | 0x80);
1332 set_bit(keycode, key_down);
1334 clear_bit(keycode, key_down);
1337 (!vc_kbd_mode(kbd, VC_REPEAT) ||
1338 (tty && !L_ECHO(tty) && tty_chars_in_buffer(tty)))) {
1340 * Don't repeat a key if the input buffers are not empty and the
1341 * characters get aren't echoed locally. This makes key repeat
1342 * usable with slow applications and under heavy loads.
1347 param.shift = shift_final = (shift_state | kbd->slockstate) ^ kbd->lockstate;
1348 param.ledstate = kbd->ledflagstate;
1349 key_map = key_maps[shift_final];
1351 rc = atomic_notifier_call_chain(&keyboard_notifier_list,
1352 KBD_KEYCODE, ¶m);
1353 if (rc == NOTIFY_STOP || !key_map) {
1354 atomic_notifier_call_chain(&keyboard_notifier_list,
1355 KBD_UNBOUND_KEYCODE, ¶m);
1356 do_compute_shiftstate();
1357 kbd->slockstate = 0;
1361 if (keycode < NR_KEYS)
1362 keysym = key_map[keycode];
1363 else if (keycode >= KEY_BRL_DOT1 && keycode <= KEY_BRL_DOT8)
1364 keysym = U(K(KT_BRL, keycode - KEY_BRL_DOT1 + 1));
1368 type = KTYP(keysym);
1371 param.value = keysym;
1372 rc = atomic_notifier_call_chain(&keyboard_notifier_list,
1373 KBD_UNICODE, ¶m);
1374 if (rc != NOTIFY_STOP)
1375 if (down && !raw_mode)
1376 to_utf8(vc, keysym);
1382 if (type == KT_LETTER) {
1384 if (vc_kbd_led(kbd, VC_CAPSLOCK)) {
1385 key_map = key_maps[shift_final ^ (1 << KG_SHIFT)];
1387 keysym = key_map[keycode];
1391 param.value = keysym;
1392 rc = atomic_notifier_call_chain(&keyboard_notifier_list,
1393 KBD_KEYSYM, ¶m);
1394 if (rc == NOTIFY_STOP)
1397 if ((raw_mode || kbd->kbdmode == VC_OFF) && type != KT_SPEC && type != KT_SHIFT)
1400 (*k_handler[type])(vc, keysym & 0xff, !down);
1402 param.ledstate = kbd->ledflagstate;
1403 atomic_notifier_call_chain(&keyboard_notifier_list, KBD_POST_KEYSYM, ¶m);
1405 if (type != KT_SLOCK)
1406 kbd->slockstate = 0;
1409 static void kbd_event(struct input_handle *handle, unsigned int event_type,
1410 unsigned int event_code, int value)
1412 /* We are called with interrupts disabled, just take the lock */
1413 spin_lock(&kbd_event_lock);
1415 if (event_type == EV_MSC && event_code == MSC_RAW && HW_RAW(handle->dev))
1417 if (event_type == EV_KEY)
1418 kbd_keycode(event_code, value, HW_RAW(handle->dev));
1420 spin_unlock(&kbd_event_lock);
1422 tasklet_schedule(&keyboard_tasklet);
1423 do_poke_blanked_console = 1;
1424 schedule_console_callback();
1427 static bool kbd_match(struct input_handler *handler, struct input_dev *dev)
1431 if (test_bit(EV_SND, dev->evbit))
1434 if (test_bit(EV_KEY, dev->evbit)) {
1435 for (i = KEY_RESERVED; i < BTN_MISC; i++)
1436 if (test_bit(i, dev->keybit))
1438 for (i = KEY_BRL_DOT1; i <= KEY_BRL_DOT10; i++)
1439 if (test_bit(i, dev->keybit))
1447 * When a keyboard (or other input device) is found, the kbd_connect
1448 * function is called. The function then looks at the device, and if it
1449 * likes it, it can open it and get events from it. In this (kbd_connect)
1450 * function, we should decide which VT to bind that keyboard to initially.
1452 static int kbd_connect(struct input_handler *handler, struct input_dev *dev,
1453 const struct input_device_id *id)
1455 struct input_handle *handle;
1458 handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
1463 handle->handler = handler;
1464 handle->name = "kbd";
1466 error = input_register_handle(handle);
1468 goto err_free_handle;
1470 error = input_open_device(handle);
1472 goto err_unregister_handle;
1476 err_unregister_handle:
1477 input_unregister_handle(handle);
1483 static void kbd_disconnect(struct input_handle *handle)
1485 input_close_device(handle);
1486 input_unregister_handle(handle);
1491 * Start keyboard handler on the new keyboard by refreshing LED state to
1492 * match the rest of the system.
1494 static void kbd_start(struct input_handle *handle)
1496 tasklet_disable(&keyboard_tasklet);
1498 if (ledstate != 0xff)
1499 kbd_update_leds_helper(handle, &ledstate);
1501 tasklet_enable(&keyboard_tasklet);
1504 static const struct input_device_id kbd_ids[] = {
1506 .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
1507 .evbit = { BIT_MASK(EV_KEY) },
1511 .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
1512 .evbit = { BIT_MASK(EV_SND) },
1515 { }, /* Terminating entry */
1518 MODULE_DEVICE_TABLE(input, kbd_ids);
1520 static struct input_handler kbd_handler = {
1523 .connect = kbd_connect,
1524 .disconnect = kbd_disconnect,
1527 .id_table = kbd_ids,
1530 int __init kbd_init(void)
1535 for (i = 0; i < MAX_NR_CONSOLES; i++) {
1536 kbd_table[i].ledflagstate = KBD_DEFLEDS;
1537 kbd_table[i].default_ledflagstate = KBD_DEFLEDS;
1538 kbd_table[i].ledmode = LED_SHOW_FLAGS;
1539 kbd_table[i].lockstate = KBD_DEFLOCK;
1540 kbd_table[i].slockstate = 0;
1541 kbd_table[i].modeflags = KBD_DEFMODE;
1542 kbd_table[i].kbdmode = default_utf8 ? VC_UNICODE : VC_XLATE;
1545 error = input_register_handler(&kbd_handler);
1549 tasklet_enable(&keyboard_tasklet);
1550 tasklet_schedule(&keyboard_tasklet);
1555 /* Ioctl support code */
1558 * vt_do_diacrit - diacritical table updates
1559 * @cmd: ioctl request
1560 * @up: pointer to user data for ioctl
1561 * @perm: permissions check computed by caller
1563 * Update the diacritical tables atomically and safely. Lock them
1564 * against simultaneous keypresses
1566 int vt_do_diacrit(unsigned int cmd, void __user *up, int perm)
1568 struct kbdiacrs __user *a = up;
1569 unsigned long flags;
1576 struct kbdiacr *diacr;
1579 diacr = kmalloc(MAX_DIACR * sizeof(struct kbdiacr),
1584 /* Lock the diacriticals table, make a copy and then
1585 copy it after we unlock */
1586 spin_lock_irqsave(&kbd_event_lock, flags);
1588 asize = accent_table_size;
1589 for (i = 0; i < asize; i++) {
1590 diacr[i].diacr = conv_uni_to_8bit(
1591 accent_table[i].diacr);
1592 diacr[i].base = conv_uni_to_8bit(
1593 accent_table[i].base);
1594 diacr[i].result = conv_uni_to_8bit(
1595 accent_table[i].result);
1597 spin_unlock_irqrestore(&kbd_event_lock, flags);
1599 if (put_user(asize, &a->kb_cnt))
1601 else if (copy_to_user(a->kbdiacr, diacr,
1602 asize * sizeof(struct kbdiacr)))
1609 struct kbdiacrsuc __user *a = up;
1612 buf = kmalloc(MAX_DIACR * sizeof(struct kbdiacruc),
1617 /* Lock the diacriticals table, make a copy and then
1618 copy it after we unlock */
1619 spin_lock_irqsave(&kbd_event_lock, flags);
1621 asize = accent_table_size;
1622 memcpy(buf, accent_table, asize * sizeof(struct kbdiacruc));
1624 spin_unlock_irqrestore(&kbd_event_lock, flags);
1626 if (put_user(asize, &a->kb_cnt))
1628 else if (copy_to_user(a->kbdiacruc, buf,
1629 asize*sizeof(struct kbdiacruc)))
1637 struct kbdiacrs __user *a = up;
1638 struct kbdiacr *diacr = NULL;
1644 if (get_user(ct, &a->kb_cnt))
1646 if (ct >= MAX_DIACR)
1650 diacr = kmalloc(sizeof(struct kbdiacr) * ct,
1655 if (copy_from_user(diacr, a->kbdiacr,
1656 sizeof(struct kbdiacr) * ct)) {
1662 spin_lock_irqsave(&kbd_event_lock, flags);
1663 accent_table_size = ct;
1664 for (i = 0; i < ct; i++) {
1665 accent_table[i].diacr =
1666 conv_8bit_to_uni(diacr[i].diacr);
1667 accent_table[i].base =
1668 conv_8bit_to_uni(diacr[i].base);
1669 accent_table[i].result =
1670 conv_8bit_to_uni(diacr[i].result);
1672 spin_unlock_irqrestore(&kbd_event_lock, flags);
1679 struct kbdiacrsuc __user *a = up;
1686 if (get_user(ct, &a->kb_cnt))
1689 if (ct >= MAX_DIACR)
1693 buf = kmalloc(ct * sizeof(struct kbdiacruc),
1698 if (copy_from_user(buf, a->kbdiacruc,
1699 ct * sizeof(struct kbdiacruc))) {
1704 spin_lock_irqsave(&kbd_event_lock, flags);
1706 memcpy(accent_table, buf,
1707 ct * sizeof(struct kbdiacruc));
1708 accent_table_size = ct;
1709 spin_unlock_irqrestore(&kbd_event_lock, flags);
1718 * vt_do_kdskbmode - set keyboard mode ioctl
1719 * @console: the console to use
1720 * @arg: the requested mode
1722 * Update the keyboard mode bits while holding the correct locks.
1723 * Return 0 for success or an error code.
1725 int vt_do_kdskbmode(int console, unsigned int arg)
1727 struct kbd_struct * kbd = kbd_table + console;
1729 unsigned long flags;
1731 spin_lock_irqsave(&kbd_event_lock, flags);
1734 kbd->kbdmode = VC_RAW;
1737 kbd->kbdmode = VC_MEDIUMRAW;
1740 kbd->kbdmode = VC_XLATE;
1741 do_compute_shiftstate();
1744 kbd->kbdmode = VC_UNICODE;
1745 do_compute_shiftstate();
1748 kbd->kbdmode = VC_OFF;
1753 spin_unlock_irqrestore(&kbd_event_lock, flags);
1758 * vt_do_kdskbmeta - set keyboard meta state
1759 * @console: the console to use
1760 * @arg: the requested meta state
1762 * Update the keyboard meta bits while holding the correct locks.
1763 * Return 0 for success or an error code.
1765 int vt_do_kdskbmeta(int console, unsigned int arg)
1767 struct kbd_struct * kbd = kbd_table + console;
1769 unsigned long flags;
1771 spin_lock_irqsave(&kbd_event_lock, flags);
1774 clr_vc_kbd_mode(kbd, VC_META);
1777 set_vc_kbd_mode(kbd, VC_META);
1782 spin_unlock_irqrestore(&kbd_event_lock, flags);
1786 int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc,
1789 struct kbkeycode tmp;
1792 if (copy_from_user(&tmp, user_kbkc, sizeof(struct kbkeycode)))
1796 kc = getkeycode(tmp.scancode);
1798 kc = put_user(kc, &user_kbkc->keycode);
1803 kc = setkeycode(tmp.scancode, tmp.keycode);
1809 #define i (tmp.kb_index)
1810 #define s (tmp.kb_table)
1811 #define v (tmp.kb_value)
1813 int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm,
1816 struct kbd_struct * kbd = kbd_table + console;
1818 ushort *key_map, *new_map, val, ov;
1819 unsigned long flags;
1821 if (copy_from_user(&tmp, user_kbe, sizeof(struct kbentry)))
1824 if (!capable(CAP_SYS_TTY_CONFIG))
1829 /* Ensure another thread doesn't free it under us */
1830 spin_lock_irqsave(&kbd_event_lock, flags);
1831 key_map = key_maps[s];
1833 val = U(key_map[i]);
1834 if (kbd->kbdmode != VC_UNICODE && KTYP(val) >= NR_TYPES)
1837 val = (i ? K_HOLE : K_NOSUCHMAP);
1838 spin_unlock_irqrestore(&kbd_event_lock, flags);
1839 return put_user(val, &user_kbe->kb_value);
1843 if (!i && v == K_NOSUCHMAP) {
1844 spin_lock_irqsave(&kbd_event_lock, flags);
1845 /* deallocate map */
1846 key_map = key_maps[s];
1849 if (key_map[0] == U(K_ALLOCATED)) {
1854 spin_unlock_irqrestore(&kbd_event_lock, flags);
1858 if (KTYP(v) < NR_TYPES) {
1859 if (KVAL(v) > max_vals[KTYP(v)])
1862 if (kbd->kbdmode != VC_UNICODE)
1865 /* ++Geert: non-PC keyboards may generate keycode zero */
1866 #if !defined(__mc68000__) && !defined(__powerpc__)
1867 /* assignment to entry 0 only tests validity of args */
1872 new_map = kmalloc(sizeof(plain_map), GFP_KERNEL);
1875 spin_lock_irqsave(&kbd_event_lock, flags);
1876 key_map = key_maps[s];
1877 if (key_map == NULL) {
1880 if (keymap_count >= MAX_NR_OF_USER_KEYMAPS &&
1881 !capable(CAP_SYS_RESOURCE)) {
1882 spin_unlock_irqrestore(&kbd_event_lock, flags);
1886 key_maps[s] = new_map;
1888 key_map[0] = U(K_ALLOCATED);
1889 for (j = 1; j < NR_KEYS; j++)
1890 key_map[j] = U(K_HOLE);
1901 if (((ov == K_SAK) || (v == K_SAK)) && !capable(CAP_SYS_ADMIN)) {
1902 spin_unlock_irqrestore(&kbd_event_lock, flags);
1906 if (!s && (KTYP(ov) == KT_SHIFT || KTYP(v) == KT_SHIFT))
1907 do_compute_shiftstate();
1909 spin_unlock_irqrestore(&kbd_event_lock, flags);
1918 /* FIXME: This one needs untangling and locking */
1919 int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm)
1921 struct kbsentry *kbs;
1927 char *first_free, *fj, *fnw;
1931 if (!capable(CAP_SYS_TTY_CONFIG))
1934 kbs = kmalloc(sizeof(*kbs), GFP_KERNEL);
1940 /* we mostly copy too much here (512bytes), but who cares ;) */
1941 if (copy_from_user(kbs, user_kdgkb, sizeof(struct kbsentry))) {
1945 kbs->kb_string[sizeof(kbs->kb_string)-1] = '\0';
1950 sz = sizeof(kbs->kb_string) - 1; /* sz should have been
1952 up = user_kdgkb->kb_string;
1955 for ( ; *p && sz; p++, sz--)
1956 if (put_user(*p, up++)) {
1960 if (put_user('\0', up)) {
1965 return ((p && *p) ? -EOVERFLOW : 0);
1973 first_free = funcbufptr + (funcbufsize - funcbufleft);
1974 for (j = i+1; j < MAX_NR_FUNC && !func_table[j]; j++)
1976 if (j < MAX_NR_FUNC)
1981 delta = (q ? -strlen(q) : 1) + strlen(kbs->kb_string);
1982 if (delta <= funcbufleft) { /* it fits in current buf */
1983 if (j < MAX_NR_FUNC) {
1984 memmove(fj + delta, fj, first_free - fj);
1985 for (k = j; k < MAX_NR_FUNC; k++)
1987 func_table[k] += delta;
1991 funcbufleft -= delta;
1992 } else { /* allocate a larger buffer */
1994 while (sz < funcbufsize - funcbufleft + delta)
1996 fnw = kmalloc(sz, GFP_KERNEL);
2004 if (fj > funcbufptr)
2005 memmove(fnw, funcbufptr, fj - funcbufptr);
2006 for (k = 0; k < j; k++)
2008 func_table[k] = fnw + (func_table[k] - funcbufptr);
2010 if (first_free > fj) {
2011 memmove(fnw + (fj - funcbufptr) + delta, fj, first_free - fj);
2012 for (k = j; k < MAX_NR_FUNC; k++)
2014 func_table[k] = fnw + (func_table[k] - funcbufptr) + delta;
2016 if (funcbufptr != func_buf)
2019 funcbufleft = funcbufleft - delta + sz - funcbufsize;
2022 strcpy(func_table[i], kbs->kb_string);
2031 int vt_do_kdskled(int console, int cmd, unsigned long arg, int perm)
2033 struct kbd_struct * kbd = kbd_table + console;
2034 unsigned long flags;
2035 unsigned char ucval;
2038 /* the ioctls below read/set the flags usually shown in the leds */
2039 /* don't use them - they will go away without warning */
2041 spin_lock_irqsave(&kbd_event_lock, flags);
2042 ucval = kbd->ledflagstate | (kbd->default_ledflagstate << 4);
2043 spin_unlock_irqrestore(&kbd_event_lock, flags);
2044 return put_user(ucval, (char __user *)arg);
2051 spin_lock_irqsave(&kbd_event_lock, flags);
2052 kbd->ledflagstate = (arg & 7);
2053 kbd->default_ledflagstate = ((arg >> 4) & 7);
2055 spin_unlock_irqrestore(&kbd_event_lock, flags);
2058 /* the ioctls below only set the lights, not the functions */
2059 /* for those, see KDGKBLED and KDSKBLED above */
2061 ucval = getledstate();
2062 return put_user(ucval, (char __user *)arg);
2067 setledstate(kbd, arg);
2070 return -ENOIOCTLCMD;
2073 int vt_do_kdgkbmode(int console)
2075 struct kbd_struct * kbd = kbd_table + console;
2076 /* This is a spot read so needs no locking */
2077 switch (kbd->kbdmode) {
2092 * vt_do_kdgkbmeta - report meta status
2093 * @console: console to report
2095 * Report the meta flag status of this console
2097 int vt_do_kdgkbmeta(int console)
2099 struct kbd_struct * kbd = kbd_table + console;
2100 /* Again a spot read so no locking */
2101 return vc_kbd_mode(kbd, VC_META) ? K_ESCPREFIX : K_METABIT;
2105 * vt_reset_unicode - reset the unicode status
2106 * @console: console being reset
2108 * Restore the unicode console state to its default
2110 void vt_reset_unicode(int console)
2112 unsigned long flags;
2114 spin_lock_irqsave(&kbd_event_lock, flags);
2115 kbd_table[console].kbdmode = default_utf8 ? VC_UNICODE : VC_XLATE;
2116 spin_unlock_irqrestore(&kbd_event_lock, flags);
2120 * vt_get_shiftstate - shift bit state
2122 * Report the shift bits from the keyboard state. We have to export
2123 * this to support some oddities in the vt layer.
2125 int vt_get_shift_state(void)
2127 /* Don't lock as this is a transient report */
2132 * vt_reset_keyboard - reset keyboard state
2133 * @console: console to reset
2135 * Reset the keyboard bits for a console as part of a general console
2138 void vt_reset_keyboard(int console)
2140 struct kbd_struct * kbd = kbd_table + console;
2141 unsigned long flags;
2143 spin_lock_irqsave(&kbd_event_lock, flags);
2144 set_vc_kbd_mode(kbd, VC_REPEAT);
2145 clr_vc_kbd_mode(kbd, VC_CKMODE);
2146 clr_vc_kbd_mode(kbd, VC_APPLIC);
2147 clr_vc_kbd_mode(kbd, VC_CRLF);
2149 kbd->slockstate = 0;
2150 kbd->ledmode = LED_SHOW_FLAGS;
2151 kbd->ledflagstate = kbd->default_ledflagstate;
2152 /* do not do set_leds here because this causes an endless tasklet loop
2153 when the keyboard hasn't been initialized yet */
2154 spin_unlock_irqrestore(&kbd_event_lock, flags);
2158 * vt_get_kbd_mode_bit - read keyboard status bits
2159 * @console: console to read from
2160 * @bit: mode bit to read
2162 * Report back a vt mode bit. We do this without locking so the
2163 * caller must be sure that there are no synchronization needs
2166 int vt_get_kbd_mode_bit(int console, int bit)
2168 struct kbd_struct * kbd = kbd_table + console;
2169 return vc_kbd_mode(kbd, bit);
2173 * vt_set_kbd_mode_bit - read keyboard status bits
2174 * @console: console to read from
2175 * @bit: mode bit to read
2177 * Set a vt mode bit. We do this without locking so the
2178 * caller must be sure that there are no synchronization needs
2181 void vt_set_kbd_mode_bit(int console, int bit)
2183 struct kbd_struct * kbd = kbd_table + console;
2184 unsigned long flags;
2186 spin_lock_irqsave(&kbd_event_lock, flags);
2187 set_vc_kbd_mode(kbd, bit);
2188 spin_unlock_irqrestore(&kbd_event_lock, flags);
2192 * vt_clr_kbd_mode_bit - read keyboard status bits
2193 * @console: console to read from
2194 * @bit: mode bit to read
2196 * Report back a vt mode bit. We do this without locking so the
2197 * caller must be sure that there are no synchronization needs
2200 void vt_clr_kbd_mode_bit(int console, int bit)
2202 struct kbd_struct * kbd = kbd_table + console;
2203 unsigned long flags;
2205 spin_lock_irqsave(&kbd_event_lock, flags);
2206 clr_vc_kbd_mode(kbd, bit);
2207 spin_unlock_irqrestore(&kbd_event_lock, flags);