Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Written for linux by Johan Myreen as a translation from |
3 | * the assembly version by Linus (with diacriticals added) | |
4 | * | |
5 | * Some additional features added by Christoph Niemann (ChN), March 1993 | |
6 | * | |
7 | * Loadable keymaps by Risto Kankkunen, May 1993 | |
8 | * | |
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. | |
13 | * | |
14 | * 11-11-96: SAK should now work in the raw mode (Martin Mares) | |
fe1e8604 | 15 | * |
1da177e4 LT |
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 | |
19 | * | |
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) | |
23 | */ | |
24 | ||
9272e9a2 DT |
25 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
26 | ||
759448f4 | 27 | #include <linux/consolemap.h> |
1da177e4 LT |
28 | #include <linux/module.h> |
29 | #include <linux/sched.h> | |
30 | #include <linux/tty.h> | |
31 | #include <linux/tty_flip.h> | |
32 | #include <linux/mm.h> | |
33 | #include <linux/string.h> | |
34 | #include <linux/init.h> | |
35 | #include <linux/slab.h> | |
36 | ||
37 | #include <linux/kbd_kern.h> | |
38 | #include <linux/kbd_diacr.h> | |
39 | #include <linux/vt_kern.h> | |
1da177e4 | 40 | #include <linux/input.h> |
83cc5ed3 | 41 | #include <linux/reboot.h> |
41ab4396 | 42 | #include <linux/notifier.h> |
b39b0440 | 43 | #include <linux/jiffies.h> |
6623d640 | 44 | #include <linux/uaccess.h> |
1da177e4 | 45 | |
98c2b373 GU |
46 | #include <asm/irq_regs.h> |
47 | ||
1da177e4 LT |
48 | extern void ctrl_alt_del(void); |
49 | ||
50 | /* | |
51 | * Exported functions/variables | |
52 | */ | |
53 | ||
54 | #define KBD_DEFMODE ((1 << VC_REPEAT) | (1 << VC_META)) | |
55 | ||
56 | /* | |
57 | * Some laptops take the 789uiojklm,. keys as number pad when NumLock is on. | |
58 | * This seems a good reason to start with NumLock off. On HIL keyboards | |
6aeed479 AC |
59 | * of PARISC machines however there is no NumLock key and everyone expects the |
60 | * keypad to be used for numbers. | |
1da177e4 LT |
61 | */ |
62 | ||
63 | #if defined(CONFIG_PARISC) && (defined(CONFIG_KEYBOARD_HIL) || defined(CONFIG_KEYBOARD_HIL_OLD)) | |
64 | #define KBD_DEFLEDS (1 << VC_NUMLOCK) | |
65 | #else | |
66 | #define KBD_DEFLEDS 0 | |
67 | #endif | |
68 | ||
69 | #define KBD_DEFLOCK 0 | |
70 | ||
1da177e4 LT |
71 | /* |
72 | * Handler Tables. | |
73 | */ | |
74 | ||
75 | #define K_HANDLERS\ | |
76 | k_self, k_fn, k_spec, k_pad,\ | |
77 | k_dead, k_cons, k_cur, k_shift,\ | |
78 | k_meta, k_ascii, k_lock, k_lowercase,\ | |
b9ec4e10 | 79 | k_slock, k_dead2, k_brl, k_ignore |
1da177e4 | 80 | |
fe1e8604 | 81 | typedef void (k_handler_fn)(struct vc_data *vc, unsigned char value, |
7d12e780 | 82 | char up_flag); |
1da177e4 | 83 | static k_handler_fn K_HANDLERS; |
97f5f0cd | 84 | static k_handler_fn *k_handler[16] = { K_HANDLERS }; |
1da177e4 LT |
85 | |
86 | #define FN_HANDLERS\ | |
fe1e8604 DT |
87 | fn_null, fn_enter, fn_show_ptregs, fn_show_mem,\ |
88 | fn_show_state, fn_send_intr, fn_lastcons, fn_caps_toggle,\ | |
89 | fn_num, fn_hold, fn_scroll_forw, fn_scroll_back,\ | |
90 | fn_boot_it, fn_caps_on, fn_compose, fn_SAK,\ | |
91 | fn_dec_console, fn_inc_console, fn_spawn_con, fn_bare_num | |
1da177e4 | 92 | |
7d12e780 | 93 | typedef void (fn_handler_fn)(struct vc_data *vc); |
1da177e4 LT |
94 | static fn_handler_fn FN_HANDLERS; |
95 | static fn_handler_fn *fn_handler[] = { FN_HANDLERS }; | |
96 | ||
97 | /* | |
98 | * Variables exported for vt_ioctl.c | |
99 | */ | |
100 | ||
81af8d67 | 101 | struct vt_spawn_console vt_spawn_con = { |
ccc94256 | 102 | .lock = __SPIN_LOCK_UNLOCKED(vt_spawn_con.lock), |
81af8d67 EB |
103 | .pid = NULL, |
104 | .sig = 0, | |
105 | }; | |
1da177e4 | 106 | |
1da177e4 LT |
107 | |
108 | /* | |
109 | * Internal Data. | |
110 | */ | |
111 | ||
079c9534 AC |
112 | static struct kbd_struct kbd_table[MAX_NR_CONSOLES]; |
113 | static struct kbd_struct *kbd = kbd_table; | |
114 | ||
115 | /* maximum values each key_handler can handle */ | |
116 | static const int max_vals[] = { | |
117 | 255, ARRAY_SIZE(func_table) - 1, ARRAY_SIZE(fn_handler) - 1, NR_PAD - 1, | |
118 | NR_DEAD - 1, 255, 3, NR_SHIFT - 1, 255, NR_ASCII - 1, NR_LOCK - 1, | |
119 | 255, NR_LOCK - 1, 255, NR_BRL - 1 | |
120 | }; | |
121 | ||
122 | static const int NR_TYPES = ARRAY_SIZE(max_vals); | |
123 | ||
1da177e4 | 124 | static struct input_handler kbd_handler; |
21cea58e | 125 | static DEFINE_SPINLOCK(kbd_event_lock); |
7b19ada2 | 126 | static unsigned long key_down[BITS_TO_LONGS(KEY_CNT)]; /* keyboard key bitmap */ |
1da177e4 | 127 | static unsigned char shift_down[NR_SHIFT]; /* shift state counters.. */ |
e0785572 | 128 | static bool dead_key_next; |
1da177e4 | 129 | static int npadch = -1; /* -1 or number assembled on pad */ |
b9ec4e10 | 130 | static unsigned int diacr; |
1da177e4 LT |
131 | static char rep; /* flag telling character repeat */ |
132 | ||
079c9534 AC |
133 | static int shift_state = 0; |
134 | ||
1da177e4 LT |
135 | static unsigned char ledstate = 0xff; /* undefined */ |
136 | static unsigned char ledioctl; | |
137 | ||
138 | static struct ledptr { | |
139 | unsigned int *addr; | |
140 | unsigned int mask; | |
141 | unsigned char valid:1; | |
142 | } ledptrs[3]; | |
143 | ||
41ab4396 ST |
144 | /* |
145 | * Notifier list for console keyboard events | |
146 | */ | |
147 | static ATOMIC_NOTIFIER_HEAD(keyboard_notifier_list); | |
148 | ||
149 | int register_keyboard_notifier(struct notifier_block *nb) | |
150 | { | |
151 | return atomic_notifier_chain_register(&keyboard_notifier_list, nb); | |
152 | } | |
153 | EXPORT_SYMBOL_GPL(register_keyboard_notifier); | |
154 | ||
155 | int unregister_keyboard_notifier(struct notifier_block *nb) | |
156 | { | |
157 | return atomic_notifier_chain_unregister(&keyboard_notifier_list, nb); | |
158 | } | |
159 | EXPORT_SYMBOL_GPL(unregister_keyboard_notifier); | |
160 | ||
1da177e4 | 161 | /* |
c8e4c772 MR |
162 | * Translation of scancodes to keycodes. We set them on only the first |
163 | * keyboard in the list that accepts the scancode and keycode. | |
164 | * Explanation for not choosing the first attached keyboard anymore: | |
165 | * USB keyboards for example have two event devices: one for all "normal" | |
166 | * keys and one for extra function keys (like "volume up", "make coffee", | |
167 | * etc.). So this means that scancodes for the extra function keys won't | |
168 | * be valid for the first event device, but will be for the second. | |
1da177e4 | 169 | */ |
66d2a595 DT |
170 | |
171 | struct getset_keycode_data { | |
8613e4c2 | 172 | struct input_keymap_entry ke; |
66d2a595 DT |
173 | int error; |
174 | }; | |
175 | ||
176 | static int getkeycode_helper(struct input_handle *handle, void *data) | |
177 | { | |
178 | struct getset_keycode_data *d = data; | |
179 | ||
8613e4c2 | 180 | d->error = input_get_keycode(handle->dev, &d->ke); |
66d2a595 DT |
181 | |
182 | return d->error == 0; /* stop as soon as we successfully get one */ | |
183 | } | |
184 | ||
079c9534 | 185 | static int getkeycode(unsigned int scancode) |
1da177e4 | 186 | { |
8613e4c2 MCC |
187 | struct getset_keycode_data d = { |
188 | .ke = { | |
189 | .flags = 0, | |
190 | .len = sizeof(scancode), | |
191 | .keycode = 0, | |
192 | }, | |
193 | .error = -ENODEV, | |
194 | }; | |
195 | ||
196 | memcpy(d.ke.scancode, &scancode, sizeof(scancode)); | |
c8e4c772 | 197 | |
66d2a595 | 198 | input_handler_for_each_handle(&kbd_handler, &d, getkeycode_helper); |
1da177e4 | 199 | |
8613e4c2 | 200 | return d.error ?: d.ke.keycode; |
66d2a595 DT |
201 | } |
202 | ||
203 | static int setkeycode_helper(struct input_handle *handle, void *data) | |
204 | { | |
205 | struct getset_keycode_data *d = data; | |
206 | ||
8613e4c2 | 207 | d->error = input_set_keycode(handle->dev, &d->ke); |
66d2a595 DT |
208 | |
209 | return d->error == 0; /* stop as soon as we successfully set one */ | |
1da177e4 LT |
210 | } |
211 | ||
079c9534 | 212 | static int setkeycode(unsigned int scancode, unsigned int keycode) |
1da177e4 | 213 | { |
8613e4c2 MCC |
214 | struct getset_keycode_data d = { |
215 | .ke = { | |
216 | .flags = 0, | |
217 | .len = sizeof(scancode), | |
218 | .keycode = keycode, | |
219 | }, | |
220 | .error = -ENODEV, | |
221 | }; | |
222 | ||
223 | memcpy(d.ke.scancode, &scancode, sizeof(scancode)); | |
c8e4c772 | 224 | |
66d2a595 | 225 | input_handler_for_each_handle(&kbd_handler, &d, setkeycode_helper); |
1da177e4 | 226 | |
66d2a595 | 227 | return d.error; |
1da177e4 LT |
228 | } |
229 | ||
230 | /* | |
18f7ad59 DT |
231 | * Making beeps and bells. Note that we prefer beeps to bells, but when |
232 | * shutting the sound off we do both. | |
1da177e4 | 233 | */ |
66d2a595 DT |
234 | |
235 | static int kd_sound_helper(struct input_handle *handle, void *data) | |
1da177e4 | 236 | { |
66d2a595 DT |
237 | unsigned int *hz = data; |
238 | struct input_dev *dev = handle->dev; | |
1da177e4 | 239 | |
66d2a595 | 240 | if (test_bit(EV_SND, dev->evbit)) { |
18f7ad59 | 241 | if (test_bit(SND_TONE, dev->sndbit)) { |
66d2a595 | 242 | input_inject_event(handle, EV_SND, SND_TONE, *hz); |
18f7ad59 DT |
243 | if (*hz) |
244 | return 0; | |
245 | } | |
246 | if (test_bit(SND_BELL, dev->sndbit)) | |
66d2a595 | 247 | input_inject_event(handle, EV_SND, SND_BELL, *hz ? 1 : 0); |
1da177e4 | 248 | } |
66d2a595 DT |
249 | |
250 | return 0; | |
251 | } | |
252 | ||
253 | static void kd_nosound(unsigned long ignored) | |
254 | { | |
255 | static unsigned int zero; | |
256 | ||
257 | input_handler_for_each_handle(&kbd_handler, &zero, kd_sound_helper); | |
1da177e4 LT |
258 | } |
259 | ||
8d06afab | 260 | static DEFINE_TIMER(kd_mksound_timer, kd_nosound, 0, 0); |
1da177e4 LT |
261 | |
262 | void kd_mksound(unsigned int hz, unsigned int ticks) | |
263 | { | |
66d2a595 | 264 | del_timer_sync(&kd_mksound_timer); |
1da177e4 | 265 | |
66d2a595 | 266 | input_handler_for_each_handle(&kbd_handler, &hz, kd_sound_helper); |
1da177e4 | 267 | |
66d2a595 DT |
268 | if (hz && ticks) |
269 | mod_timer(&kd_mksound_timer, jiffies + ticks); | |
1da177e4 | 270 | } |
f7511d5f | 271 | EXPORT_SYMBOL(kd_mksound); |
1da177e4 LT |
272 | |
273 | /* | |
274 | * Setting the keyboard rate. | |
275 | */ | |
276 | ||
66d2a595 | 277 | static int kbd_rate_helper(struct input_handle *handle, void *data) |
1da177e4 | 278 | { |
66d2a595 DT |
279 | struct input_dev *dev = handle->dev; |
280 | struct kbd_repeat *rep = data; | |
281 | ||
282 | if (test_bit(EV_REP, dev->evbit)) { | |
283 | ||
284 | if (rep[0].delay > 0) | |
285 | input_inject_event(handle, | |
286 | EV_REP, REP_DELAY, rep[0].delay); | |
287 | if (rep[0].period > 0) | |
288 | input_inject_event(handle, | |
289 | EV_REP, REP_PERIOD, rep[0].period); | |
290 | ||
291 | rep[1].delay = dev->rep[REP_DELAY]; | |
292 | rep[1].period = dev->rep[REP_PERIOD]; | |
1da177e4 | 293 | } |
66d2a595 DT |
294 | |
295 | return 0; | |
296 | } | |
297 | ||
298 | int kbd_rate(struct kbd_repeat *rep) | |
299 | { | |
300 | struct kbd_repeat data[2] = { *rep }; | |
301 | ||
302 | input_handler_for_each_handle(&kbd_handler, data, kbd_rate_helper); | |
303 | *rep = data[1]; /* Copy currently used settings */ | |
304 | ||
1da177e4 LT |
305 | return 0; |
306 | } | |
307 | ||
308 | /* | |
309 | * Helper Functions. | |
310 | */ | |
311 | static void put_queue(struct vc_data *vc, int ch) | |
312 | { | |
8ce73264 | 313 | struct tty_struct *tty = vc->port.tty; |
1da177e4 LT |
314 | |
315 | if (tty) { | |
316 | tty_insert_flip_char(tty, ch, 0); | |
317 | con_schedule_flip(tty); | |
318 | } | |
319 | } | |
320 | ||
321 | static void puts_queue(struct vc_data *vc, char *cp) | |
322 | { | |
8ce73264 | 323 | struct tty_struct *tty = vc->port.tty; |
1da177e4 LT |
324 | |
325 | if (!tty) | |
326 | return; | |
327 | ||
328 | while (*cp) { | |
329 | tty_insert_flip_char(tty, *cp, 0); | |
330 | cp++; | |
331 | } | |
332 | con_schedule_flip(tty); | |
333 | } | |
334 | ||
335 | static void applkey(struct vc_data *vc, int key, char mode) | |
336 | { | |
337 | static char buf[] = { 0x1b, 'O', 0x00, 0x00 }; | |
338 | ||
339 | buf[1] = (mode ? 'O' : '['); | |
340 | buf[2] = key; | |
341 | puts_queue(vc, buf); | |
342 | } | |
343 | ||
344 | /* | |
345 | * Many other routines do put_queue, but I think either | |
346 | * they produce ASCII, or they produce some user-assigned | |
347 | * string, and in both cases we might assume that it is | |
759448f4 | 348 | * in utf-8 already. |
1da177e4 | 349 | */ |
759448f4 | 350 | static void to_utf8(struct vc_data *vc, uint c) |
1da177e4 LT |
351 | { |
352 | if (c < 0x80) | |
353 | /* 0******* */ | |
354 | put_queue(vc, c); | |
fe1e8604 | 355 | else if (c < 0x800) { |
1da177e4 | 356 | /* 110***** 10****** */ |
fe1e8604 | 357 | put_queue(vc, 0xc0 | (c >> 6)); |
1da177e4 | 358 | put_queue(vc, 0x80 | (c & 0x3f)); |
e0785572 DT |
359 | } else if (c < 0x10000) { |
360 | if (c >= 0xD800 && c < 0xE000) | |
759448f4 JE |
361 | return; |
362 | if (c == 0xFFFF) | |
363 | return; | |
1da177e4 LT |
364 | /* 1110**** 10****** 10****** */ |
365 | put_queue(vc, 0xe0 | (c >> 12)); | |
366 | put_queue(vc, 0x80 | ((c >> 6) & 0x3f)); | |
367 | put_queue(vc, 0x80 | (c & 0x3f)); | |
e0785572 | 368 | } else if (c < 0x110000) { |
759448f4 JE |
369 | /* 11110*** 10****** 10****** 10****** */ |
370 | put_queue(vc, 0xf0 | (c >> 18)); | |
371 | put_queue(vc, 0x80 | ((c >> 12) & 0x3f)); | |
372 | put_queue(vc, 0x80 | ((c >> 6) & 0x3f)); | |
373 | put_queue(vc, 0x80 | (c & 0x3f)); | |
fe1e8604 | 374 | } |
1da177e4 LT |
375 | } |
376 | ||
fe1e8604 | 377 | /* |
1da177e4 LT |
378 | * Called after returning from RAW mode or when changing consoles - recompute |
379 | * shift_down[] and shift_state from key_down[] maybe called when keymap is | |
079c9534 AC |
380 | * undefined, so that shiftkey release is seen. The caller must hold the |
381 | * kbd_event_lock. | |
1da177e4 | 382 | */ |
079c9534 AC |
383 | |
384 | static void do_compute_shiftstate(void) | |
1da177e4 LT |
385 | { |
386 | unsigned int i, j, k, sym, val; | |
387 | ||
388 | shift_state = 0; | |
389 | memset(shift_down, 0, sizeof(shift_down)); | |
fe1e8604 | 390 | |
1da177e4 LT |
391 | for (i = 0; i < ARRAY_SIZE(key_down); i++) { |
392 | ||
393 | if (!key_down[i]) | |
394 | continue; | |
395 | ||
396 | k = i * BITS_PER_LONG; | |
397 | ||
398 | for (j = 0; j < BITS_PER_LONG; j++, k++) { | |
399 | ||
400 | if (!test_bit(k, key_down)) | |
401 | continue; | |
402 | ||
403 | sym = U(key_maps[0][k]); | |
404 | if (KTYP(sym) != KT_SHIFT && KTYP(sym) != KT_SLOCK) | |
405 | continue; | |
406 | ||
407 | val = KVAL(sym); | |
408 | if (val == KVAL(K_CAPSSHIFT)) | |
409 | val = KVAL(K_SHIFT); | |
410 | ||
411 | shift_down[val]++; | |
412 | shift_state |= (1 << val); | |
413 | } | |
414 | } | |
415 | } | |
416 | ||
079c9534 AC |
417 | /* We still have to export this method to vt.c */ |
418 | void compute_shiftstate(void) | |
419 | { | |
420 | unsigned long flags; | |
421 | spin_lock_irqsave(&kbd_event_lock, flags); | |
422 | do_compute_shiftstate(); | |
423 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
424 | } | |
425 | ||
1da177e4 LT |
426 | /* |
427 | * We have a combining character DIACR here, followed by the character CH. | |
428 | * If the combination occurs in the table, return the corresponding value. | |
429 | * Otherwise, if CH is a space or equals DIACR, return DIACR. | |
430 | * Otherwise, conclude that DIACR was not combining after all, | |
431 | * queue it and return CH. | |
432 | */ | |
b9ec4e10 | 433 | static unsigned int handle_diacr(struct vc_data *vc, unsigned int ch) |
1da177e4 | 434 | { |
b9ec4e10 | 435 | unsigned int d = diacr; |
1da177e4 LT |
436 | unsigned int i; |
437 | ||
438 | diacr = 0; | |
439 | ||
b9ec4e10 ST |
440 | if ((d & ~0xff) == BRL_UC_ROW) { |
441 | if ((ch & ~0xff) == BRL_UC_ROW) | |
442 | return d | ch; | |
443 | } else { | |
444 | for (i = 0; i < accent_table_size; i++) | |
445 | if (accent_table[i].diacr == d && accent_table[i].base == ch) | |
446 | return accent_table[i].result; | |
1da177e4 LT |
447 | } |
448 | ||
b9ec4e10 | 449 | if (ch == ' ' || ch == (BRL_UC_ROW|0) || ch == d) |
1da177e4 LT |
450 | return d; |
451 | ||
b9ec4e10 | 452 | if (kbd->kbdmode == VC_UNICODE) |
04c71976 ST |
453 | to_utf8(vc, d); |
454 | else { | |
455 | int c = conv_uni_to_8bit(d); | |
456 | if (c != -1) | |
457 | put_queue(vc, c); | |
458 | } | |
b9ec4e10 | 459 | |
1da177e4 LT |
460 | return ch; |
461 | } | |
462 | ||
463 | /* | |
464 | * Special function handlers | |
465 | */ | |
7d12e780 | 466 | static void fn_enter(struct vc_data *vc) |
1da177e4 LT |
467 | { |
468 | if (diacr) { | |
b9ec4e10 | 469 | if (kbd->kbdmode == VC_UNICODE) |
04c71976 ST |
470 | to_utf8(vc, diacr); |
471 | else { | |
472 | int c = conv_uni_to_8bit(diacr); | |
473 | if (c != -1) | |
474 | put_queue(vc, c); | |
475 | } | |
1da177e4 LT |
476 | diacr = 0; |
477 | } | |
e0785572 | 478 | |
1da177e4 LT |
479 | put_queue(vc, 13); |
480 | if (vc_kbd_mode(kbd, VC_CRLF)) | |
481 | put_queue(vc, 10); | |
482 | } | |
483 | ||
7d12e780 | 484 | static void fn_caps_toggle(struct vc_data *vc) |
1da177e4 LT |
485 | { |
486 | if (rep) | |
487 | return; | |
e0785572 | 488 | |
1da177e4 LT |
489 | chg_vc_kbd_led(kbd, VC_CAPSLOCK); |
490 | } | |
491 | ||
7d12e780 | 492 | static void fn_caps_on(struct vc_data *vc) |
1da177e4 LT |
493 | { |
494 | if (rep) | |
495 | return; | |
e0785572 | 496 | |
1da177e4 LT |
497 | set_vc_kbd_led(kbd, VC_CAPSLOCK); |
498 | } | |
499 | ||
7d12e780 | 500 | static void fn_show_ptregs(struct vc_data *vc) |
1da177e4 | 501 | { |
7d12e780 | 502 | struct pt_regs *regs = get_irq_regs(); |
e0785572 | 503 | |
1da177e4 LT |
504 | if (regs) |
505 | show_regs(regs); | |
506 | } | |
507 | ||
7d12e780 | 508 | static void fn_hold(struct vc_data *vc) |
1da177e4 | 509 | { |
8ce73264 | 510 | struct tty_struct *tty = vc->port.tty; |
1da177e4 LT |
511 | |
512 | if (rep || !tty) | |
513 | return; | |
514 | ||
515 | /* | |
516 | * Note: SCROLLOCK will be set (cleared) by stop_tty (start_tty); | |
517 | * these routines are also activated by ^S/^Q. | |
518 | * (And SCROLLOCK can also be set by the ioctl KDSKBLED.) | |
519 | */ | |
520 | if (tty->stopped) | |
521 | start_tty(tty); | |
522 | else | |
523 | stop_tty(tty); | |
524 | } | |
525 | ||
7d12e780 | 526 | static void fn_num(struct vc_data *vc) |
1da177e4 | 527 | { |
e0785572 | 528 | if (vc_kbd_mode(kbd, VC_APPLIC)) |
1da177e4 LT |
529 | applkey(vc, 'P', 1); |
530 | else | |
7d12e780 | 531 | fn_bare_num(vc); |
1da177e4 LT |
532 | } |
533 | ||
534 | /* | |
535 | * Bind this to Shift-NumLock if you work in application keypad mode | |
536 | * but want to be able to change the NumLock flag. | |
537 | * Bind this to NumLock if you prefer that the NumLock key always | |
538 | * changes the NumLock flag. | |
539 | */ | |
7d12e780 | 540 | static void fn_bare_num(struct vc_data *vc) |
1da177e4 LT |
541 | { |
542 | if (!rep) | |
543 | chg_vc_kbd_led(kbd, VC_NUMLOCK); | |
544 | } | |
545 | ||
7d12e780 | 546 | static void fn_lastcons(struct vc_data *vc) |
1da177e4 LT |
547 | { |
548 | /* switch to the last used console, ChN */ | |
549 | set_console(last_console); | |
550 | } | |
551 | ||
7d12e780 | 552 | static void fn_dec_console(struct vc_data *vc) |
1da177e4 LT |
553 | { |
554 | int i, cur = fg_console; | |
555 | ||
556 | /* Currently switching? Queue this next switch relative to that. */ | |
557 | if (want_console != -1) | |
558 | cur = want_console; | |
559 | ||
fe1e8604 | 560 | for (i = cur - 1; i != cur; i--) { |
1da177e4 | 561 | if (i == -1) |
fe1e8604 | 562 | i = MAX_NR_CONSOLES - 1; |
1da177e4 LT |
563 | if (vc_cons_allocated(i)) |
564 | break; | |
565 | } | |
566 | set_console(i); | |
567 | } | |
568 | ||
7d12e780 | 569 | static void fn_inc_console(struct vc_data *vc) |
1da177e4 LT |
570 | { |
571 | int i, cur = fg_console; | |
572 | ||
573 | /* Currently switching? Queue this next switch relative to that. */ | |
574 | if (want_console != -1) | |
575 | cur = want_console; | |
576 | ||
577 | for (i = cur+1; i != cur; i++) { | |
578 | if (i == MAX_NR_CONSOLES) | |
579 | i = 0; | |
580 | if (vc_cons_allocated(i)) | |
581 | break; | |
582 | } | |
583 | set_console(i); | |
584 | } | |
585 | ||
7d12e780 | 586 | static void fn_send_intr(struct vc_data *vc) |
1da177e4 | 587 | { |
8ce73264 | 588 | struct tty_struct *tty = vc->port.tty; |
1da177e4 LT |
589 | |
590 | if (!tty) | |
591 | return; | |
592 | tty_insert_flip_char(tty, 0, TTY_BREAK); | |
593 | con_schedule_flip(tty); | |
594 | } | |
595 | ||
7d12e780 | 596 | static void fn_scroll_forw(struct vc_data *vc) |
1da177e4 LT |
597 | { |
598 | scrollfront(vc, 0); | |
599 | } | |
600 | ||
7d12e780 | 601 | static void fn_scroll_back(struct vc_data *vc) |
1da177e4 LT |
602 | { |
603 | scrollback(vc, 0); | |
604 | } | |
605 | ||
7d12e780 | 606 | static void fn_show_mem(struct vc_data *vc) |
1da177e4 | 607 | { |
b2b755b5 | 608 | show_mem(0); |
1da177e4 LT |
609 | } |
610 | ||
7d12e780 | 611 | static void fn_show_state(struct vc_data *vc) |
1da177e4 LT |
612 | { |
613 | show_state(); | |
614 | } | |
615 | ||
7d12e780 | 616 | static void fn_boot_it(struct vc_data *vc) |
1da177e4 LT |
617 | { |
618 | ctrl_alt_del(); | |
619 | } | |
620 | ||
7d12e780 | 621 | static void fn_compose(struct vc_data *vc) |
1da177e4 | 622 | { |
e0785572 | 623 | dead_key_next = true; |
1da177e4 LT |
624 | } |
625 | ||
7d12e780 | 626 | static void fn_spawn_con(struct vc_data *vc) |
1da177e4 | 627 | { |
81af8d67 EB |
628 | spin_lock(&vt_spawn_con.lock); |
629 | if (vt_spawn_con.pid) | |
630 | if (kill_pid(vt_spawn_con.pid, vt_spawn_con.sig, 1)) { | |
631 | put_pid(vt_spawn_con.pid); | |
632 | vt_spawn_con.pid = NULL; | |
633 | } | |
634 | spin_unlock(&vt_spawn_con.lock); | |
1da177e4 LT |
635 | } |
636 | ||
7d12e780 | 637 | static void fn_SAK(struct vc_data *vc) |
1da177e4 | 638 | { |
8b6312f4 | 639 | struct work_struct *SAK_work = &vc_cons[fg_console].SAK_work; |
8b6312f4 | 640 | schedule_work(SAK_work); |
1da177e4 LT |
641 | } |
642 | ||
7d12e780 | 643 | static void fn_null(struct vc_data *vc) |
1da177e4 | 644 | { |
079c9534 | 645 | do_compute_shiftstate(); |
1da177e4 LT |
646 | } |
647 | ||
648 | /* | |
649 | * Special key handlers | |
650 | */ | |
7d12e780 | 651 | static void k_ignore(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 LT |
652 | { |
653 | } | |
654 | ||
7d12e780 | 655 | static void k_spec(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 LT |
656 | { |
657 | if (up_flag) | |
658 | return; | |
659 | if (value >= ARRAY_SIZE(fn_handler)) | |
660 | return; | |
fe1e8604 | 661 | if ((kbd->kbdmode == VC_RAW || |
9fc3de9c AT |
662 | kbd->kbdmode == VC_MEDIUMRAW || |
663 | kbd->kbdmode == VC_OFF) && | |
1da177e4 LT |
664 | value != KVAL(K_SAK)) |
665 | return; /* SAK is allowed even in raw mode */ | |
7d12e780 | 666 | fn_handler[value](vc); |
1da177e4 LT |
667 | } |
668 | ||
7d12e780 | 669 | static void k_lowercase(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 | 670 | { |
9272e9a2 | 671 | pr_err("k_lowercase was called - impossible\n"); |
1da177e4 LT |
672 | } |
673 | ||
7d12e780 | 674 | static void k_unicode(struct vc_data *vc, unsigned int value, char up_flag) |
1da177e4 LT |
675 | { |
676 | if (up_flag) | |
677 | return; /* no action, if this is a key release */ | |
678 | ||
679 | if (diacr) | |
680 | value = handle_diacr(vc, value); | |
681 | ||
682 | if (dead_key_next) { | |
e0785572 | 683 | dead_key_next = false; |
1da177e4 LT |
684 | diacr = value; |
685 | return; | |
686 | } | |
b9ec4e10 | 687 | if (kbd->kbdmode == VC_UNICODE) |
04c71976 ST |
688 | to_utf8(vc, value); |
689 | else { | |
690 | int c = conv_uni_to_8bit(value); | |
691 | if (c != -1) | |
692 | put_queue(vc, c); | |
693 | } | |
1da177e4 LT |
694 | } |
695 | ||
696 | /* | |
697 | * Handle dead key. Note that we now may have several | |
698 | * dead keys modifying the same character. Very useful | |
699 | * for Vietnamese. | |
700 | */ | |
7d12e780 | 701 | static void k_deadunicode(struct vc_data *vc, unsigned int value, char up_flag) |
1da177e4 LT |
702 | { |
703 | if (up_flag) | |
704 | return; | |
e0785572 | 705 | |
1da177e4 LT |
706 | diacr = (diacr ? handle_diacr(vc, value) : value); |
707 | } | |
708 | ||
7d12e780 | 709 | static void k_self(struct vc_data *vc, unsigned char value, char up_flag) |
b9ec4e10 | 710 | { |
d2187ebd | 711 | k_unicode(vc, conv_8bit_to_uni(value), up_flag); |
b9ec4e10 ST |
712 | } |
713 | ||
7d12e780 | 714 | static void k_dead2(struct vc_data *vc, unsigned char value, char up_flag) |
b9ec4e10 | 715 | { |
7d12e780 | 716 | k_deadunicode(vc, value, up_flag); |
b9ec4e10 ST |
717 | } |
718 | ||
1da177e4 LT |
719 | /* |
720 | * Obsolete - for backwards compatibility only | |
721 | */ | |
7d12e780 | 722 | static void k_dead(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 | 723 | { |
0f5e560e | 724 | static const unsigned char ret_diacr[NR_DEAD] = {'`', '\'', '^', '~', '"', ',' }; |
e0785572 DT |
725 | |
726 | k_deadunicode(vc, ret_diacr[value], up_flag); | |
1da177e4 LT |
727 | } |
728 | ||
7d12e780 | 729 | static void k_cons(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 LT |
730 | { |
731 | if (up_flag) | |
732 | return; | |
e0785572 | 733 | |
1da177e4 LT |
734 | set_console(value); |
735 | } | |
736 | ||
7d12e780 | 737 | static void k_fn(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 | 738 | { |
1da177e4 LT |
739 | if (up_flag) |
740 | return; | |
e0785572 DT |
741 | |
742 | if ((unsigned)value < ARRAY_SIZE(func_table)) { | |
1da177e4 LT |
743 | if (func_table[value]) |
744 | puts_queue(vc, func_table[value]); | |
745 | } else | |
9272e9a2 | 746 | pr_err("k_fn called with value=%d\n", value); |
1da177e4 LT |
747 | } |
748 | ||
7d12e780 | 749 | static void k_cur(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 | 750 | { |
e52b29c2 | 751 | static const char cur_chars[] = "BDCA"; |
1da177e4 LT |
752 | |
753 | if (up_flag) | |
754 | return; | |
e0785572 | 755 | |
1da177e4 LT |
756 | applkey(vc, cur_chars[value], vc_kbd_mode(kbd, VC_CKMODE)); |
757 | } | |
758 | ||
7d12e780 | 759 | static void k_pad(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 | 760 | { |
0f5e560e AM |
761 | static const char pad_chars[] = "0123456789+-*/\015,.?()#"; |
762 | static const char app_map[] = "pqrstuvwxylSRQMnnmPQS"; | |
1da177e4 LT |
763 | |
764 | if (up_flag) | |
765 | return; /* no action, if this is a key release */ | |
766 | ||
767 | /* kludge... shift forces cursor/number keys */ | |
768 | if (vc_kbd_mode(kbd, VC_APPLIC) && !shift_down[KG_SHIFT]) { | |
769 | applkey(vc, app_map[value], 1); | |
770 | return; | |
771 | } | |
772 | ||
e0785572 DT |
773 | if (!vc_kbd_led(kbd, VC_NUMLOCK)) { |
774 | ||
1da177e4 | 775 | switch (value) { |
e0785572 DT |
776 | case KVAL(K_PCOMMA): |
777 | case KVAL(K_PDOT): | |
778 | k_fn(vc, KVAL(K_REMOVE), 0); | |
779 | return; | |
780 | case KVAL(K_P0): | |
781 | k_fn(vc, KVAL(K_INSERT), 0); | |
782 | return; | |
783 | case KVAL(K_P1): | |
784 | k_fn(vc, KVAL(K_SELECT), 0); | |
785 | return; | |
786 | case KVAL(K_P2): | |
787 | k_cur(vc, KVAL(K_DOWN), 0); | |
788 | return; | |
789 | case KVAL(K_P3): | |
790 | k_fn(vc, KVAL(K_PGDN), 0); | |
791 | return; | |
792 | case KVAL(K_P4): | |
793 | k_cur(vc, KVAL(K_LEFT), 0); | |
794 | return; | |
795 | case KVAL(K_P6): | |
796 | k_cur(vc, KVAL(K_RIGHT), 0); | |
797 | return; | |
798 | case KVAL(K_P7): | |
799 | k_fn(vc, KVAL(K_FIND), 0); | |
800 | return; | |
801 | case KVAL(K_P8): | |
802 | k_cur(vc, KVAL(K_UP), 0); | |
803 | return; | |
804 | case KVAL(K_P9): | |
805 | k_fn(vc, KVAL(K_PGUP), 0); | |
806 | return; | |
807 | case KVAL(K_P5): | |
808 | applkey(vc, 'G', vc_kbd_mode(kbd, VC_APPLIC)); | |
809 | return; | |
1da177e4 | 810 | } |
e0785572 | 811 | } |
1da177e4 LT |
812 | |
813 | put_queue(vc, pad_chars[value]); | |
814 | if (value == KVAL(K_PENTER) && vc_kbd_mode(kbd, VC_CRLF)) | |
815 | put_queue(vc, 10); | |
816 | } | |
817 | ||
7d12e780 | 818 | static void k_shift(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 LT |
819 | { |
820 | int old_state = shift_state; | |
821 | ||
822 | if (rep) | |
823 | return; | |
824 | /* | |
825 | * Mimic typewriter: | |
826 | * a CapsShift key acts like Shift but undoes CapsLock | |
827 | */ | |
828 | if (value == KVAL(K_CAPSSHIFT)) { | |
829 | value = KVAL(K_SHIFT); | |
830 | if (!up_flag) | |
831 | clr_vc_kbd_led(kbd, VC_CAPSLOCK); | |
832 | } | |
833 | ||
834 | if (up_flag) { | |
835 | /* | |
836 | * handle the case that two shift or control | |
837 | * keys are depressed simultaneously | |
838 | */ | |
839 | if (shift_down[value]) | |
840 | shift_down[value]--; | |
841 | } else | |
842 | shift_down[value]++; | |
843 | ||
844 | if (shift_down[value]) | |
845 | shift_state |= (1 << value); | |
846 | else | |
847 | shift_state &= ~(1 << value); | |
848 | ||
849 | /* kludge */ | |
850 | if (up_flag && shift_state != old_state && npadch != -1) { | |
851 | if (kbd->kbdmode == VC_UNICODE) | |
759448f4 | 852 | to_utf8(vc, npadch); |
1da177e4 LT |
853 | else |
854 | put_queue(vc, npadch & 0xff); | |
855 | npadch = -1; | |
856 | } | |
857 | } | |
858 | ||
7d12e780 | 859 | static void k_meta(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 LT |
860 | { |
861 | if (up_flag) | |
862 | return; | |
863 | ||
864 | if (vc_kbd_mode(kbd, VC_META)) { | |
865 | put_queue(vc, '\033'); | |
866 | put_queue(vc, value); | |
867 | } else | |
868 | put_queue(vc, value | 0x80); | |
869 | } | |
870 | ||
7d12e780 | 871 | static void k_ascii(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 LT |
872 | { |
873 | int base; | |
874 | ||
875 | if (up_flag) | |
876 | return; | |
877 | ||
878 | if (value < 10) { | |
879 | /* decimal input of code, while Alt depressed */ | |
880 | base = 10; | |
881 | } else { | |
882 | /* hexadecimal input of code, while AltGr depressed */ | |
883 | value -= 10; | |
884 | base = 16; | |
885 | } | |
886 | ||
887 | if (npadch == -1) | |
888 | npadch = value; | |
889 | else | |
890 | npadch = npadch * base + value; | |
891 | } | |
892 | ||
7d12e780 | 893 | static void k_lock(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 LT |
894 | { |
895 | if (up_flag || rep) | |
896 | return; | |
e0785572 | 897 | |
1da177e4 LT |
898 | chg_vc_kbd_lock(kbd, value); |
899 | } | |
900 | ||
7d12e780 | 901 | static void k_slock(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 | 902 | { |
7d12e780 | 903 | k_shift(vc, value, up_flag); |
1da177e4 LT |
904 | if (up_flag || rep) |
905 | return; | |
e0785572 | 906 | |
1da177e4 LT |
907 | chg_vc_kbd_slock(kbd, value); |
908 | /* try to make Alt, oops, AltGr and such work */ | |
909 | if (!key_maps[kbd->lockstate ^ kbd->slockstate]) { | |
910 | kbd->slockstate = 0; | |
911 | chg_vc_kbd_slock(kbd, value); | |
912 | } | |
913 | } | |
914 | ||
b9ec4e10 | 915 | /* by default, 300ms interval for combination release */ |
77426d72 ST |
916 | static unsigned brl_timeout = 300; |
917 | MODULE_PARM_DESC(brl_timeout, "Braille keys release delay in ms (0 for commit on first key release)"); | |
918 | module_param(brl_timeout, uint, 0644); | |
919 | ||
920 | static unsigned brl_nbchords = 1; | |
921 | MODULE_PARM_DESC(brl_nbchords, "Number of chords that produce a braille pattern (0 for dead chords)"); | |
922 | module_param(brl_nbchords, uint, 0644); | |
923 | ||
7d12e780 | 924 | static void k_brlcommit(struct vc_data *vc, unsigned int pattern, char up_flag) |
77426d72 ST |
925 | { |
926 | static unsigned long chords; | |
927 | static unsigned committed; | |
928 | ||
929 | if (!brl_nbchords) | |
7d12e780 | 930 | k_deadunicode(vc, BRL_UC_ROW | pattern, up_flag); |
77426d72 ST |
931 | else { |
932 | committed |= pattern; | |
933 | chords++; | |
934 | if (chords == brl_nbchords) { | |
7d12e780 | 935 | k_unicode(vc, BRL_UC_ROW | committed, up_flag); |
77426d72 ST |
936 | chords = 0; |
937 | committed = 0; | |
938 | } | |
939 | } | |
940 | } | |
941 | ||
7d12e780 | 942 | static void k_brl(struct vc_data *vc, unsigned char value, char up_flag) |
b9ec4e10 | 943 | { |
e0785572 | 944 | static unsigned pressed, committing; |
b9ec4e10 ST |
945 | static unsigned long releasestart; |
946 | ||
947 | if (kbd->kbdmode != VC_UNICODE) { | |
948 | if (!up_flag) | |
9272e9a2 | 949 | pr_warning("keyboard mode must be unicode for braille patterns\n"); |
b9ec4e10 ST |
950 | return; |
951 | } | |
952 | ||
953 | if (!value) { | |
7d12e780 | 954 | k_unicode(vc, BRL_UC_ROW, up_flag); |
b9ec4e10 ST |
955 | return; |
956 | } | |
957 | ||
958 | if (value > 8) | |
959 | return; | |
960 | ||
e0785572 | 961 | if (!up_flag) { |
b9ec4e10 ST |
962 | pressed |= 1 << (value - 1); |
963 | if (!brl_timeout) | |
964 | committing = pressed; | |
e0785572 DT |
965 | } else if (brl_timeout) { |
966 | if (!committing || | |
967 | time_after(jiffies, | |
968 | releasestart + msecs_to_jiffies(brl_timeout))) { | |
969 | committing = pressed; | |
970 | releasestart = jiffies; | |
971 | } | |
972 | pressed &= ~(1 << (value - 1)); | |
973 | if (!pressed && committing) { | |
974 | k_brlcommit(vc, committing, 0); | |
975 | committing = 0; | |
976 | } | |
977 | } else { | |
978 | if (committing) { | |
979 | k_brlcommit(vc, committing, 0); | |
980 | committing = 0; | |
981 | } | |
982 | pressed &= ~(1 << (value - 1)); | |
b9ec4e10 ST |
983 | } |
984 | } | |
985 | ||
1da177e4 LT |
986 | /* |
987 | * The leds display either (i) the status of NumLock, CapsLock, ScrollLock, | |
988 | * or (ii) whatever pattern of lights people want to show using KDSETLED, | |
989 | * or (iii) specified bits of specified words in kernel memory. | |
990 | */ | |
991 | unsigned char getledstate(void) | |
992 | { | |
993 | return ledstate; | |
994 | } | |
995 | ||
996 | void setledstate(struct kbd_struct *kbd, unsigned int led) | |
997 | { | |
079c9534 AC |
998 | unsigned long flags; |
999 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1da177e4 LT |
1000 | if (!(led & ~7)) { |
1001 | ledioctl = led; | |
1002 | kbd->ledmode = LED_SHOW_IOCTL; | |
1003 | } else | |
1004 | kbd->ledmode = LED_SHOW_FLAGS; | |
e0785572 | 1005 | |
1da177e4 | 1006 | set_leds(); |
079c9534 | 1007 | spin_unlock_irqrestore(&kbd_event_lock, flags); |
1da177e4 LT |
1008 | } |
1009 | ||
1010 | static inline unsigned char getleds(void) | |
1011 | { | |
1012 | struct kbd_struct *kbd = kbd_table + fg_console; | |
1013 | unsigned char leds; | |
1014 | int i; | |
1015 | ||
1016 | if (kbd->ledmode == LED_SHOW_IOCTL) | |
1017 | return ledioctl; | |
1018 | ||
1019 | leds = kbd->ledflagstate; | |
1020 | ||
1021 | if (kbd->ledmode == LED_SHOW_MEM) { | |
1022 | for (i = 0; i < 3; i++) | |
1023 | if (ledptrs[i].valid) { | |
1024 | if (*ledptrs[i].addr & ledptrs[i].mask) | |
1025 | leds |= (1 << i); | |
1026 | else | |
1027 | leds &= ~(1 << i); | |
1028 | } | |
1029 | } | |
1030 | return leds; | |
1031 | } | |
1032 | ||
66d2a595 DT |
1033 | static int kbd_update_leds_helper(struct input_handle *handle, void *data) |
1034 | { | |
1035 | unsigned char leds = *(unsigned char *)data; | |
1036 | ||
1037 | if (test_bit(EV_LED, handle->dev->evbit)) { | |
1038 | input_inject_event(handle, EV_LED, LED_SCROLLL, !!(leds & 0x01)); | |
1039 | input_inject_event(handle, EV_LED, LED_NUML, !!(leds & 0x02)); | |
1040 | input_inject_event(handle, EV_LED, LED_CAPSL, !!(leds & 0x04)); | |
1041 | input_inject_event(handle, EV_SYN, SYN_REPORT, 0); | |
1042 | } | |
1043 | ||
1044 | return 0; | |
1045 | } | |
1046 | ||
079c9534 AC |
1047 | /** |
1048 | * vt_get_leds - helper for braille console | |
1049 | * @console: console to read | |
1050 | * @flag: flag we want to check | |
1051 | * | |
1052 | * Check the status of a keyboard led flag and report it back | |
1053 | */ | |
1054 | int vt_get_leds(int console, int flag) | |
1055 | { | |
1056 | unsigned long flags; | |
1057 | struct kbd_struct * kbd = kbd_table + console; | |
1058 | int ret; | |
1059 | ||
1060 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1061 | ret = vc_kbd_led(kbd, flag); | |
1062 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1063 | ||
1064 | return ret; | |
1065 | } | |
1066 | EXPORT_SYMBOL_GPL(vt_get_leds); | |
1067 | ||
1068 | /** | |
1069 | * vt_set_led_state - set LED state of a console | |
1070 | * @console: console to set | |
1071 | * @leds: LED bits | |
1072 | * | |
1073 | * Set the LEDs on a console. This is a wrapper for the VT layer | |
1074 | * so that we can keep kbd knowledge internal | |
1075 | */ | |
1076 | void vt_set_led_state(int console, int leds) | |
1077 | { | |
1078 | struct kbd_struct * kbd = kbd_table + console; | |
1079 | setledstate(kbd, leds); | |
1080 | } | |
1081 | ||
1082 | /** | |
1083 | * vt_kbd_con_start - Keyboard side of console start | |
1084 | * @console: console | |
1085 | * | |
1086 | * Handle console start. This is a wrapper for the VT layer | |
1087 | * so that we can keep kbd knowledge internal | |
1088 | */ | |
1089 | void vt_kbd_con_start(int console) | |
1090 | { | |
1091 | struct kbd_struct * kbd = kbd_table + console; | |
1092 | unsigned long flags; | |
1093 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1094 | clr_vc_kbd_led(kbd, VC_SCROLLOCK); | |
1095 | set_leds(); | |
1096 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1097 | } | |
1098 | ||
1099 | /** | |
1100 | * vt_kbd_con_stop - Keyboard side of console stop | |
1101 | * @console: console | |
1102 | * | |
1103 | * Handle console stop. This is a wrapper for the VT layer | |
1104 | * so that we can keep kbd knowledge internal | |
1105 | */ | |
1106 | void vt_kbd_con_stop(int console) | |
1107 | { | |
1108 | struct kbd_struct * kbd = kbd_table + console; | |
1109 | unsigned long flags; | |
1110 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1111 | set_vc_kbd_led(kbd, VC_SCROLLOCK); | |
1112 | set_leds(); | |
1113 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1114 | } | |
1115 | ||
1da177e4 | 1116 | /* |
66d2a595 DT |
1117 | * This is the tasklet that updates LED state on all keyboards |
1118 | * attached to the box. The reason we use tasklet is that we | |
1119 | * need to handle the scenario when keyboard handler is not | |
1120 | * registered yet but we already getting updates form VT to | |
1121 | * update led state. | |
1da177e4 | 1122 | */ |
1da177e4 LT |
1123 | static void kbd_bh(unsigned long dummy) |
1124 | { | |
1da177e4 LT |
1125 | unsigned char leds = getleds(); |
1126 | ||
1127 | if (leds != ledstate) { | |
66d2a595 DT |
1128 | input_handler_for_each_handle(&kbd_handler, &leds, |
1129 | kbd_update_leds_helper); | |
1130 | ledstate = leds; | |
1da177e4 | 1131 | } |
1da177e4 LT |
1132 | } |
1133 | ||
1134 | DECLARE_TASKLET_DISABLED(keyboard_tasklet, kbd_bh, 0); | |
1135 | ||
1da177e4 | 1136 | #if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_ALPHA) ||\ |
0b57ee9e AB |
1137 | defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_SPARC) ||\ |
1138 | defined(CONFIG_PARISC) || defined(CONFIG_SUPERH) ||\ | |
3a4e832c HCE |
1139 | (defined(CONFIG_ARM) && defined(CONFIG_KEYBOARD_ATKBD) && !defined(CONFIG_ARCH_RPC)) ||\ |
1140 | defined(CONFIG_AVR32) | |
1da177e4 LT |
1141 | |
1142 | #define HW_RAW(dev) (test_bit(EV_MSC, dev->evbit) && test_bit(MSC_RAW, dev->mscbit) &&\ | |
1143 | ((dev)->id.bustype == BUS_I8042) && ((dev)->id.vendor == 0x0001) && ((dev)->id.product == 0x0001)) | |
1144 | ||
0f5e560e | 1145 | static const unsigned short x86_keycodes[256] = |
1da177e4 LT |
1146 | { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
1147 | 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, | |
1148 | 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, | |
1149 | 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, | |
1150 | 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, | |
1151 | 80, 81, 82, 83, 84,118, 86, 87, 88,115,120,119,121,112,123, 92, | |
896cdc7b | 1152 | 284,285,309, 0,312, 91,327,328,329,331,333,335,336,337,338,339, |
1da177e4 LT |
1153 | 367,288,302,304,350, 89,334,326,267,126,268,269,125,347,348,349, |
1154 | 360,261,262,263,268,376,100,101,321,316,373,286,289,102,351,355, | |
72a42f24 HG |
1155 | 103,104,105,275,287,279,258,106,274,107,294,364,358,363,362,361, |
1156 | 291,108,381,281,290,272,292,305,280, 99,112,257,306,359,113,114, | |
1da177e4 LT |
1157 | 264,117,271,374,379,265,266, 93, 94, 95, 85,259,375,260, 90,116, |
1158 | 377,109,111,277,278,282,283,295,296,297,299,300,301,293,303,307, | |
1159 | 308,310,313,314,315,317,318,319,320,357,322,323,324,325,276,330, | |
1160 | 332,340,365,342,343,344,345,346,356,270,341,368,369,370,371,372 }; | |
1161 | ||
0b57ee9e | 1162 | #ifdef CONFIG_SPARC |
e0785572 | 1163 | static int sparc_l1_a_state; |
1da177e4 LT |
1164 | extern void sun_do_break(void); |
1165 | #endif | |
1166 | ||
fe1e8604 | 1167 | static int emulate_raw(struct vc_data *vc, unsigned int keycode, |
1da177e4 LT |
1168 | unsigned char up_flag) |
1169 | { | |
896cdc7b | 1170 | int code; |
1da177e4 LT |
1171 | |
1172 | switch (keycode) { | |
896cdc7b | 1173 | |
e0785572 DT |
1174 | case KEY_PAUSE: |
1175 | put_queue(vc, 0xe1); | |
1176 | put_queue(vc, 0x1d | up_flag); | |
1177 | put_queue(vc, 0x45 | up_flag); | |
1178 | break; | |
896cdc7b | 1179 | |
e0785572 DT |
1180 | case KEY_HANGEUL: |
1181 | if (!up_flag) | |
1182 | put_queue(vc, 0xf2); | |
1183 | break; | |
1da177e4 | 1184 | |
e0785572 DT |
1185 | case KEY_HANJA: |
1186 | if (!up_flag) | |
1187 | put_queue(vc, 0xf1); | |
1188 | break; | |
896cdc7b | 1189 | |
e0785572 DT |
1190 | case KEY_SYSRQ: |
1191 | /* | |
1192 | * Real AT keyboards (that's what we're trying | |
1193 | * to emulate here emit 0xe0 0x2a 0xe0 0x37 when | |
1194 | * pressing PrtSc/SysRq alone, but simply 0x54 | |
1195 | * when pressing Alt+PrtSc/SysRq. | |
1196 | */ | |
1197 | if (test_bit(KEY_LEFTALT, key_down) || | |
1198 | test_bit(KEY_RIGHTALT, key_down)) { | |
1199 | put_queue(vc, 0x54 | up_flag); | |
1200 | } else { | |
1201 | put_queue(vc, 0xe0); | |
1202 | put_queue(vc, 0x2a | up_flag); | |
1203 | put_queue(vc, 0xe0); | |
1204 | put_queue(vc, 0x37 | up_flag); | |
1205 | } | |
1206 | break; | |
1da177e4 | 1207 | |
e0785572 DT |
1208 | default: |
1209 | if (keycode > 255) | |
1210 | return -1; | |
1da177e4 | 1211 | |
e0785572 DT |
1212 | code = x86_keycodes[keycode]; |
1213 | if (!code) | |
1214 | return -1; | |
1da177e4 | 1215 | |
e0785572 DT |
1216 | if (code & 0x100) |
1217 | put_queue(vc, 0xe0); | |
1218 | put_queue(vc, (code & 0x7f) | up_flag); | |
1219 | ||
1220 | break; | |
1da177e4 LT |
1221 | } |
1222 | ||
1223 | return 0; | |
1224 | } | |
1225 | ||
1226 | #else | |
1227 | ||
1228 | #define HW_RAW(dev) 0 | |
1229 | ||
1da177e4 LT |
1230 | static int emulate_raw(struct vc_data *vc, unsigned int keycode, unsigned char up_flag) |
1231 | { | |
1232 | if (keycode > 127) | |
1233 | return -1; | |
1234 | ||
1235 | put_queue(vc, keycode | up_flag); | |
1236 | return 0; | |
1237 | } | |
1238 | #endif | |
1239 | ||
1240 | static void kbd_rawcode(unsigned char data) | |
1241 | { | |
1242 | struct vc_data *vc = vc_cons[fg_console].d; | |
e0785572 | 1243 | |
0c09b2ac | 1244 | kbd = kbd_table + vc->vc_num; |
1da177e4 LT |
1245 | if (kbd->kbdmode == VC_RAW) |
1246 | put_queue(vc, data); | |
1247 | } | |
1248 | ||
7d12e780 | 1249 | static void kbd_keycode(unsigned int keycode, int down, int hw_raw) |
1da177e4 LT |
1250 | { |
1251 | struct vc_data *vc = vc_cons[fg_console].d; | |
1252 | unsigned short keysym, *key_map; | |
e0785572 DT |
1253 | unsigned char type; |
1254 | bool raw_mode; | |
1da177e4 LT |
1255 | struct tty_struct *tty; |
1256 | int shift_final; | |
41ab4396 | 1257 | struct keyboard_notifier_param param = { .vc = vc, .value = keycode, .down = down }; |
e0785572 | 1258 | int rc; |
1da177e4 | 1259 | |
8ce73264 | 1260 | tty = vc->port.tty; |
1da177e4 LT |
1261 | |
1262 | if (tty && (!tty->driver_data)) { | |
1263 | /* No driver data? Strange. Okay we fix it then. */ | |
1264 | tty->driver_data = vc; | |
1265 | } | |
1266 | ||
0c09b2ac | 1267 | kbd = kbd_table + vc->vc_num; |
1da177e4 | 1268 | |
0b57ee9e | 1269 | #ifdef CONFIG_SPARC |
1da177e4 LT |
1270 | if (keycode == KEY_STOP) |
1271 | sparc_l1_a_state = down; | |
1272 | #endif | |
1273 | ||
1274 | rep = (down == 2); | |
1275 | ||
e0785572 DT |
1276 | raw_mode = (kbd->kbdmode == VC_RAW); |
1277 | if (raw_mode && !hw_raw) | |
1da177e4 | 1278 | if (emulate_raw(vc, keycode, !down << 7)) |
9e35d206 | 1279 | if (keycode < BTN_MISC && printk_ratelimit()) |
9272e9a2 DT |
1280 | pr_warning("can't emulate rawmode for keycode %d\n", |
1281 | keycode); | |
1da177e4 | 1282 | |
0b57ee9e | 1283 | #ifdef CONFIG_SPARC |
1da177e4 | 1284 | if (keycode == KEY_A && sparc_l1_a_state) { |
e0785572 | 1285 | sparc_l1_a_state = false; |
1da177e4 LT |
1286 | sun_do_break(); |
1287 | } | |
1288 | #endif | |
1289 | ||
1290 | if (kbd->kbdmode == VC_MEDIUMRAW) { | |
1291 | /* | |
1292 | * This is extended medium raw mode, with keys above 127 | |
1293 | * encoded as 0, high 7 bits, low 7 bits, with the 0 bearing | |
1294 | * the 'up' flag if needed. 0 is reserved, so this shouldn't | |
1295 | * interfere with anything else. The two bytes after 0 will | |
1296 | * always have the up flag set not to interfere with older | |
1297 | * applications. This allows for 16384 different keycodes, | |
1298 | * which should be enough. | |
1299 | */ | |
1300 | if (keycode < 128) { | |
1301 | put_queue(vc, keycode | (!down << 7)); | |
1302 | } else { | |
1303 | put_queue(vc, !down << 7); | |
1304 | put_queue(vc, (keycode >> 7) | 0x80); | |
1305 | put_queue(vc, keycode | 0x80); | |
1306 | } | |
e0785572 | 1307 | raw_mode = true; |
1da177e4 LT |
1308 | } |
1309 | ||
1310 | if (down) | |
1311 | set_bit(keycode, key_down); | |
1312 | else | |
1313 | clear_bit(keycode, key_down); | |
1314 | ||
fe1e8604 DT |
1315 | if (rep && |
1316 | (!vc_kbd_mode(kbd, VC_REPEAT) || | |
f34d7a5b | 1317 | (tty && !L_ECHO(tty) && tty_chars_in_buffer(tty)))) { |
1da177e4 LT |
1318 | /* |
1319 | * Don't repeat a key if the input buffers are not empty and the | |
fe1e8604 | 1320 | * characters get aren't echoed locally. This makes key repeat |
1da177e4 LT |
1321 | * usable with slow applications and under heavy loads. |
1322 | */ | |
1323 | return; | |
1324 | } | |
1325 | ||
41ab4396 | 1326 | param.shift = shift_final = (shift_state | kbd->slockstate) ^ kbd->lockstate; |
0beb4f6f | 1327 | param.ledstate = kbd->ledflagstate; |
1da177e4 LT |
1328 | key_map = key_maps[shift_final]; |
1329 | ||
e0785572 DT |
1330 | rc = atomic_notifier_call_chain(&keyboard_notifier_list, |
1331 | KBD_KEYCODE, ¶m); | |
1332 | if (rc == NOTIFY_STOP || !key_map) { | |
1333 | atomic_notifier_call_chain(&keyboard_notifier_list, | |
1334 | KBD_UNBOUND_KEYCODE, ¶m); | |
079c9534 | 1335 | do_compute_shiftstate(); |
1da177e4 LT |
1336 | kbd->slockstate = 0; |
1337 | return; | |
1338 | } | |
1339 | ||
e0785572 | 1340 | if (keycode < NR_KEYS) |
b9ec4e10 | 1341 | keysym = key_map[keycode]; |
e0785572 DT |
1342 | else if (keycode >= KEY_BRL_DOT1 && keycode <= KEY_BRL_DOT8) |
1343 | keysym = U(K(KT_BRL, keycode - KEY_BRL_DOT1 + 1)); | |
1344 | else | |
1345 | return; | |
1da177e4 | 1346 | |
1da177e4 LT |
1347 | type = KTYP(keysym); |
1348 | ||
1349 | if (type < 0xf0) { | |
41ab4396 | 1350 | param.value = keysym; |
e0785572 DT |
1351 | rc = atomic_notifier_call_chain(&keyboard_notifier_list, |
1352 | KBD_UNICODE, ¶m); | |
1353 | if (rc != NOTIFY_STOP) | |
1354 | if (down && !raw_mode) | |
1355 | to_utf8(vc, keysym); | |
1da177e4 LT |
1356 | return; |
1357 | } | |
1358 | ||
1359 | type -= 0xf0; | |
1360 | ||
1da177e4 LT |
1361 | if (type == KT_LETTER) { |
1362 | type = KT_LATIN; | |
1363 | if (vc_kbd_led(kbd, VC_CAPSLOCK)) { | |
1364 | key_map = key_maps[shift_final ^ (1 << KG_SHIFT)]; | |
1365 | if (key_map) | |
1366 | keysym = key_map[keycode]; | |
1367 | } | |
1368 | } | |
41ab4396 | 1369 | |
e0785572 DT |
1370 | param.value = keysym; |
1371 | rc = atomic_notifier_call_chain(&keyboard_notifier_list, | |
1372 | KBD_KEYSYM, ¶m); | |
1373 | if (rc == NOTIFY_STOP) | |
41ab4396 ST |
1374 | return; |
1375 | ||
9fc3de9c | 1376 | if ((raw_mode || kbd->kbdmode == VC_OFF) && type != KT_SPEC && type != KT_SHIFT) |
41ab4396 | 1377 | return; |
1da177e4 | 1378 | |
7d12e780 | 1379 | (*k_handler[type])(vc, keysym & 0xff, !down); |
1da177e4 | 1380 | |
0beb4f6f | 1381 | param.ledstate = kbd->ledflagstate; |
41ab4396 ST |
1382 | atomic_notifier_call_chain(&keyboard_notifier_list, KBD_POST_KEYSYM, ¶m); |
1383 | ||
1da177e4 LT |
1384 | if (type != KT_SLOCK) |
1385 | kbd->slockstate = 0; | |
1386 | } | |
1387 | ||
fe1e8604 | 1388 | static void kbd_event(struct input_handle *handle, unsigned int event_type, |
1da177e4 LT |
1389 | unsigned int event_code, int value) |
1390 | { | |
21cea58e DT |
1391 | /* We are called with interrupts disabled, just take the lock */ |
1392 | spin_lock(&kbd_event_lock); | |
1393 | ||
1da177e4 LT |
1394 | if (event_type == EV_MSC && event_code == MSC_RAW && HW_RAW(handle->dev)) |
1395 | kbd_rawcode(value); | |
1396 | if (event_type == EV_KEY) | |
7d12e780 | 1397 | kbd_keycode(event_code, value, HW_RAW(handle->dev)); |
21cea58e DT |
1398 | |
1399 | spin_unlock(&kbd_event_lock); | |
1400 | ||
1da177e4 LT |
1401 | tasklet_schedule(&keyboard_tasklet); |
1402 | do_poke_blanked_console = 1; | |
1403 | schedule_console_callback(); | |
1404 | } | |
1405 | ||
0b7024ac DT |
1406 | static bool kbd_match(struct input_handler *handler, struct input_dev *dev) |
1407 | { | |
1408 | int i; | |
1409 | ||
1410 | if (test_bit(EV_SND, dev->evbit)) | |
1411 | return true; | |
1412 | ||
53c1f764 | 1413 | if (test_bit(EV_KEY, dev->evbit)) { |
0b7024ac DT |
1414 | for (i = KEY_RESERVED; i < BTN_MISC; i++) |
1415 | if (test_bit(i, dev->keybit)) | |
1416 | return true; | |
53c1f764 ST |
1417 | for (i = KEY_BRL_DOT1; i <= KEY_BRL_DOT10; i++) |
1418 | if (test_bit(i, dev->keybit)) | |
1419 | return true; | |
1420 | } | |
0b7024ac DT |
1421 | |
1422 | return false; | |
1423 | } | |
1424 | ||
1da177e4 LT |
1425 | /* |
1426 | * When a keyboard (or other input device) is found, the kbd_connect | |
1427 | * function is called. The function then looks at the device, and if it | |
1428 | * likes it, it can open it and get events from it. In this (kbd_connect) | |
1429 | * function, we should decide which VT to bind that keyboard to initially. | |
1430 | */ | |
5b2a0826 DT |
1431 | static int kbd_connect(struct input_handler *handler, struct input_dev *dev, |
1432 | const struct input_device_id *id) | |
1da177e4 LT |
1433 | { |
1434 | struct input_handle *handle; | |
5b2a0826 | 1435 | int error; |
1da177e4 | 1436 | |
22479e1c DT |
1437 | handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL); |
1438 | if (!handle) | |
5b2a0826 | 1439 | return -ENOMEM; |
1da177e4 LT |
1440 | |
1441 | handle->dev = dev; | |
1442 | handle->handler = handler; | |
fe1e8604 | 1443 | handle->name = "kbd"; |
1da177e4 | 1444 | |
5b2a0826 DT |
1445 | error = input_register_handle(handle); |
1446 | if (error) | |
1447 | goto err_free_handle; | |
1da177e4 | 1448 | |
5b2a0826 DT |
1449 | error = input_open_device(handle); |
1450 | if (error) | |
1451 | goto err_unregister_handle; | |
1452 | ||
1453 | return 0; | |
1454 | ||
1455 | err_unregister_handle: | |
1456 | input_unregister_handle(handle); | |
1457 | err_free_handle: | |
1458 | kfree(handle); | |
1459 | return error; | |
1da177e4 LT |
1460 | } |
1461 | ||
1462 | static void kbd_disconnect(struct input_handle *handle) | |
1463 | { | |
1464 | input_close_device(handle); | |
5b2a0826 | 1465 | input_unregister_handle(handle); |
1da177e4 LT |
1466 | kfree(handle); |
1467 | } | |
1468 | ||
c7e8dc6e DT |
1469 | /* |
1470 | * Start keyboard handler on the new keyboard by refreshing LED state to | |
1471 | * match the rest of the system. | |
1472 | */ | |
1473 | static void kbd_start(struct input_handle *handle) | |
1474 | { | |
c7e8dc6e | 1475 | tasklet_disable(&keyboard_tasklet); |
66d2a595 DT |
1476 | |
1477 | if (ledstate != 0xff) | |
1478 | kbd_update_leds_helper(handle, &ledstate); | |
1479 | ||
c7e8dc6e DT |
1480 | tasklet_enable(&keyboard_tasklet); |
1481 | } | |
1482 | ||
66e66118 | 1483 | static const struct input_device_id kbd_ids[] = { |
1da177e4 | 1484 | { |
6aeed479 AC |
1485 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT, |
1486 | .evbit = { BIT_MASK(EV_KEY) }, | |
1487 | }, | |
fe1e8604 | 1488 | |
1da177e4 | 1489 | { |
6aeed479 AC |
1490 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT, |
1491 | .evbit = { BIT_MASK(EV_SND) }, | |
1492 | }, | |
1da177e4 LT |
1493 | |
1494 | { }, /* Terminating entry */ | |
1495 | }; | |
1496 | ||
1497 | MODULE_DEVICE_TABLE(input, kbd_ids); | |
1498 | ||
1499 | static struct input_handler kbd_handler = { | |
1500 | .event = kbd_event, | |
0b7024ac | 1501 | .match = kbd_match, |
1da177e4 LT |
1502 | .connect = kbd_connect, |
1503 | .disconnect = kbd_disconnect, | |
c7e8dc6e | 1504 | .start = kbd_start, |
1da177e4 LT |
1505 | .name = "kbd", |
1506 | .id_table = kbd_ids, | |
1507 | }; | |
1508 | ||
1509 | int __init kbd_init(void) | |
1510 | { | |
1511 | int i; | |
4263cf0f | 1512 | int error; |
1da177e4 | 1513 | |
6aeed479 | 1514 | for (i = 0; i < MAX_NR_CONSOLES; i++) { |
2b192908 DT |
1515 | kbd_table[i].ledflagstate = KBD_DEFLEDS; |
1516 | kbd_table[i].default_ledflagstate = KBD_DEFLEDS; | |
1517 | kbd_table[i].ledmode = LED_SHOW_FLAGS; | |
1518 | kbd_table[i].lockstate = KBD_DEFLOCK; | |
1519 | kbd_table[i].slockstate = 0; | |
1520 | kbd_table[i].modeflags = KBD_DEFMODE; | |
2e8ecb9d | 1521 | kbd_table[i].kbdmode = default_utf8 ? VC_UNICODE : VC_XLATE; |
2b192908 | 1522 | } |
1da177e4 | 1523 | |
4263cf0f DT |
1524 | error = input_register_handler(&kbd_handler); |
1525 | if (error) | |
1526 | return error; | |
1da177e4 LT |
1527 | |
1528 | tasklet_enable(&keyboard_tasklet); | |
1529 | tasklet_schedule(&keyboard_tasklet); | |
1530 | ||
1531 | return 0; | |
1532 | } | |
247ff8e6 AC |
1533 | |
1534 | /* Ioctl support code */ | |
1535 | ||
1536 | /** | |
1537 | * vt_do_diacrit - diacritical table updates | |
1538 | * @cmd: ioctl request | |
1539 | * @up: pointer to user data for ioctl | |
1540 | * @perm: permissions check computed by caller | |
1541 | * | |
1542 | * Update the diacritical tables atomically and safely. Lock them | |
1543 | * against simultaneous keypresses | |
1544 | */ | |
1545 | int vt_do_diacrit(unsigned int cmd, void __user *up, int perm) | |
1546 | { | |
1547 | struct kbdiacrs __user *a = up; | |
1548 | unsigned long flags; | |
1549 | int asize; | |
1550 | int ret = 0; | |
1551 | ||
1552 | switch (cmd) { | |
1553 | case KDGKBDIACR: | |
1554 | { | |
1555 | struct kbdiacr *diacr; | |
1556 | int i; | |
1557 | ||
1558 | diacr = kmalloc(MAX_DIACR * sizeof(struct kbdiacr), | |
1559 | GFP_KERNEL); | |
1560 | if (diacr == NULL) | |
1561 | return -ENOMEM; | |
1562 | ||
1563 | /* Lock the diacriticals table, make a copy and then | |
1564 | copy it after we unlock */ | |
1565 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1566 | ||
1567 | asize = accent_table_size; | |
1568 | for (i = 0; i < asize; i++) { | |
1569 | diacr[i].diacr = conv_uni_to_8bit( | |
1570 | accent_table[i].diacr); | |
1571 | diacr[i].base = conv_uni_to_8bit( | |
1572 | accent_table[i].base); | |
1573 | diacr[i].result = conv_uni_to_8bit( | |
1574 | accent_table[i].result); | |
1575 | } | |
1576 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1577 | ||
1578 | if (put_user(asize, &a->kb_cnt)) | |
1579 | ret = -EFAULT; | |
1580 | else if (copy_to_user(a->kbdiacr, diacr, | |
1581 | asize * sizeof(struct kbdiacr))) | |
1582 | ret = -EFAULT; | |
1583 | kfree(diacr); | |
1584 | return ret; | |
1585 | } | |
1586 | case KDGKBDIACRUC: | |
1587 | { | |
1588 | struct kbdiacrsuc __user *a = up; | |
1589 | void *buf; | |
1590 | ||
1591 | buf = kmalloc(MAX_DIACR * sizeof(struct kbdiacruc), | |
1592 | GFP_KERNEL); | |
1593 | if (buf == NULL) | |
1594 | return -ENOMEM; | |
1595 | ||
1596 | /* Lock the diacriticals table, make a copy and then | |
1597 | copy it after we unlock */ | |
1598 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1599 | ||
1600 | asize = accent_table_size; | |
1601 | memcpy(buf, accent_table, asize * sizeof(struct kbdiacruc)); | |
1602 | ||
1603 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1604 | ||
1605 | if (put_user(asize, &a->kb_cnt)) | |
1606 | ret = -EFAULT; | |
1607 | else if (copy_to_user(a->kbdiacruc, buf, | |
1608 | asize*sizeof(struct kbdiacruc))) | |
1609 | ret = -EFAULT; | |
1610 | kfree(buf); | |
1611 | return ret; | |
1612 | } | |
1613 | ||
1614 | case KDSKBDIACR: | |
1615 | { | |
1616 | struct kbdiacrs __user *a = up; | |
1617 | struct kbdiacr *diacr = NULL; | |
1618 | unsigned int ct; | |
1619 | int i; | |
1620 | ||
1621 | if (!perm) | |
1622 | return -EPERM; | |
1623 | if (get_user(ct, &a->kb_cnt)) | |
1624 | return -EFAULT; | |
1625 | if (ct >= MAX_DIACR) | |
1626 | return -EINVAL; | |
1627 | ||
1628 | if (ct) { | |
1629 | diacr = kmalloc(sizeof(struct kbdiacr) * ct, | |
1630 | GFP_KERNEL); | |
1631 | if (diacr == NULL) | |
1632 | return -ENOMEM; | |
1633 | ||
1634 | if (copy_from_user(diacr, a->kbdiacr, | |
1635 | sizeof(struct kbdiacr) * ct)) { | |
1636 | kfree(diacr); | |
1637 | return -EFAULT; | |
1638 | } | |
1639 | } | |
1640 | ||
1641 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1642 | accent_table_size = ct; | |
1643 | for (i = 0; i < ct; i++) { | |
1644 | accent_table[i].diacr = | |
1645 | conv_8bit_to_uni(diacr[i].diacr); | |
1646 | accent_table[i].base = | |
1647 | conv_8bit_to_uni(diacr[i].base); | |
1648 | accent_table[i].result = | |
1649 | conv_8bit_to_uni(diacr[i].result); | |
1650 | } | |
1651 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1652 | kfree(diacr); | |
1653 | return 0; | |
1654 | } | |
1655 | ||
1656 | case KDSKBDIACRUC: | |
1657 | { | |
1658 | struct kbdiacrsuc __user *a = up; | |
1659 | unsigned int ct; | |
1660 | void *buf = NULL; | |
1661 | ||
1662 | if (!perm) | |
1663 | return -EPERM; | |
1664 | ||
1665 | if (get_user(ct, &a->kb_cnt)) | |
1666 | return -EFAULT; | |
1667 | ||
1668 | if (ct >= MAX_DIACR) | |
1669 | return -EINVAL; | |
1670 | ||
1671 | if (ct) { | |
1672 | buf = kmalloc(ct * sizeof(struct kbdiacruc), | |
1673 | GFP_KERNEL); | |
1674 | if (buf == NULL) | |
1675 | return -ENOMEM; | |
1676 | ||
1677 | if (copy_from_user(buf, a->kbdiacruc, | |
1678 | ct * sizeof(struct kbdiacruc))) { | |
1679 | kfree(buf); | |
1680 | return -EFAULT; | |
1681 | } | |
1682 | } | |
1683 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1684 | if (ct) | |
1685 | memcpy(accent_table, buf, | |
1686 | ct * sizeof(struct kbdiacruc)); | |
1687 | accent_table_size = ct; | |
1688 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1689 | kfree(buf); | |
1690 | return 0; | |
1691 | } | |
1692 | } | |
1693 | return ret; | |
1694 | } | |
079c9534 AC |
1695 | |
1696 | /** | |
1697 | * vt_do_kdskbmode - set keyboard mode ioctl | |
1698 | * @console: the console to use | |
1699 | * @arg: the requested mode | |
1700 | * | |
1701 | * Update the keyboard mode bits while holding the correct locks. | |
1702 | * Return 0 for success or an error code. | |
1703 | */ | |
1704 | int vt_do_kdskbmode(int console, unsigned int arg) | |
1705 | { | |
1706 | struct kbd_struct * kbd = kbd_table + console; | |
1707 | int ret = 0; | |
1708 | unsigned long flags; | |
1709 | ||
1710 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1711 | switch(arg) { | |
1712 | case K_RAW: | |
1713 | kbd->kbdmode = VC_RAW; | |
1714 | break; | |
1715 | case K_MEDIUMRAW: | |
1716 | kbd->kbdmode = VC_MEDIUMRAW; | |
1717 | break; | |
1718 | case K_XLATE: | |
1719 | kbd->kbdmode = VC_XLATE; | |
1720 | do_compute_shiftstate(); | |
1721 | break; | |
1722 | case K_UNICODE: | |
1723 | kbd->kbdmode = VC_UNICODE; | |
1724 | do_compute_shiftstate(); | |
1725 | break; | |
1726 | case K_OFF: | |
1727 | kbd->kbdmode = VC_OFF; | |
1728 | break; | |
1729 | default: | |
1730 | ret = -EINVAL; | |
1731 | } | |
1732 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1733 | return ret; | |
1734 | } | |
1735 | ||
1736 | /** | |
1737 | * vt_do_kdskbmeta - set keyboard meta state | |
1738 | * @console: the console to use | |
1739 | * @arg: the requested meta state | |
1740 | * | |
1741 | * Update the keyboard meta bits while holding the correct locks. | |
1742 | * Return 0 for success or an error code. | |
1743 | */ | |
1744 | int vt_do_kdskbmeta(int console, unsigned int arg) | |
1745 | { | |
1746 | struct kbd_struct * kbd = kbd_table + console; | |
1747 | int ret = 0; | |
1748 | unsigned long flags; | |
1749 | ||
1750 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1751 | switch(arg) { | |
1752 | case K_METABIT: | |
1753 | clr_vc_kbd_mode(kbd, VC_META); | |
1754 | break; | |
1755 | case K_ESCPREFIX: | |
1756 | set_vc_kbd_mode(kbd, VC_META); | |
1757 | break; | |
1758 | default: | |
1759 | ret = -EINVAL; | |
1760 | } | |
1761 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1762 | return ret; | |
1763 | } | |
1764 | ||
1765 | int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc, | |
1766 | int perm) | |
1767 | { | |
1768 | struct kbkeycode tmp; | |
1769 | int kc = 0; | |
1770 | ||
1771 | if (copy_from_user(&tmp, user_kbkc, sizeof(struct kbkeycode))) | |
1772 | return -EFAULT; | |
1773 | switch (cmd) { | |
1774 | case KDGETKEYCODE: | |
1775 | kc = getkeycode(tmp.scancode); | |
1776 | if (kc >= 0) | |
1777 | kc = put_user(kc, &user_kbkc->keycode); | |
1778 | break; | |
1779 | case KDSETKEYCODE: | |
1780 | if (!perm) | |
1781 | return -EPERM; | |
1782 | kc = setkeycode(tmp.scancode, tmp.keycode); | |
1783 | break; | |
1784 | } | |
1785 | return kc; | |
1786 | } | |
1787 | ||
1788 | #define i (tmp.kb_index) | |
1789 | #define s (tmp.kb_table) | |
1790 | #define v (tmp.kb_value) | |
1791 | ||
1792 | int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm, | |
1793 | int console) | |
1794 | { | |
1795 | struct kbd_struct * kbd = kbd_table + console; | |
1796 | struct kbentry tmp; | |
1797 | ushort *key_map, *new_map, val, ov; | |
1798 | unsigned long flags; | |
1799 | ||
1800 | if (copy_from_user(&tmp, user_kbe, sizeof(struct kbentry))) | |
1801 | return -EFAULT; | |
1802 | ||
1803 | if (!capable(CAP_SYS_TTY_CONFIG)) | |
1804 | perm = 0; | |
1805 | ||
1806 | switch (cmd) { | |
1807 | case KDGKBENT: | |
1808 | /* Ensure another thread doesn't free it under us */ | |
1809 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1810 | key_map = key_maps[s]; | |
1811 | if (key_map) { | |
1812 | val = U(key_map[i]); | |
1813 | if (kbd->kbdmode != VC_UNICODE && KTYP(val) >= NR_TYPES) | |
1814 | val = K_HOLE; | |
1815 | } else | |
1816 | val = (i ? K_HOLE : K_NOSUCHMAP); | |
1817 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1818 | return put_user(val, &user_kbe->kb_value); | |
1819 | case KDSKBENT: | |
1820 | if (!perm) | |
1821 | return -EPERM; | |
1822 | if (!i && v == K_NOSUCHMAP) { | |
1823 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1824 | /* deallocate map */ | |
1825 | key_map = key_maps[s]; | |
1826 | if (s && key_map) { | |
1827 | key_maps[s] = NULL; | |
1828 | if (key_map[0] == U(K_ALLOCATED)) { | |
1829 | kfree(key_map); | |
1830 | keymap_count--; | |
1831 | } | |
1832 | } | |
1833 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1834 | break; | |
1835 | } | |
1836 | ||
1837 | if (KTYP(v) < NR_TYPES) { | |
1838 | if (KVAL(v) > max_vals[KTYP(v)]) | |
1839 | return -EINVAL; | |
1840 | } else | |
1841 | if (kbd->kbdmode != VC_UNICODE) | |
1842 | return -EINVAL; | |
1843 | ||
1844 | /* ++Geert: non-PC keyboards may generate keycode zero */ | |
1845 | #if !defined(__mc68000__) && !defined(__powerpc__) | |
1846 | /* assignment to entry 0 only tests validity of args */ | |
1847 | if (!i) | |
1848 | break; | |
1849 | #endif | |
1850 | ||
1851 | new_map = kmalloc(sizeof(plain_map), GFP_KERNEL); | |
1852 | if (!new_map) | |
1853 | return -ENOMEM; | |
1854 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1855 | key_map = key_maps[s]; | |
1856 | if (key_map == NULL) { | |
1857 | int j; | |
1858 | ||
1859 | if (keymap_count >= MAX_NR_OF_USER_KEYMAPS && | |
1860 | !capable(CAP_SYS_RESOURCE)) { | |
1861 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1862 | kfree(new_map); | |
1863 | return -EPERM; | |
1864 | } | |
1865 | key_maps[s] = new_map; | |
82896210 | 1866 | key_map = new_map; |
079c9534 AC |
1867 | key_map[0] = U(K_ALLOCATED); |
1868 | for (j = 1; j < NR_KEYS; j++) | |
1869 | key_map[j] = U(K_HOLE); | |
1870 | keymap_count++; | |
1871 | } else | |
1872 | kfree(new_map); | |
1873 | ||
1874 | ov = U(key_map[i]); | |
1875 | if (v == ov) | |
1876 | goto out; | |
1877 | /* | |
1878 | * Attention Key. | |
1879 | */ | |
1880 | if (((ov == K_SAK) || (v == K_SAK)) && !capable(CAP_SYS_ADMIN)) { | |
1881 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1882 | return -EPERM; | |
1883 | } | |
1884 | key_map[i] = U(v); | |
1885 | if (!s && (KTYP(ov) == KT_SHIFT || KTYP(v) == KT_SHIFT)) | |
1886 | do_compute_shiftstate(); | |
1887 | out: | |
1888 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1889 | break; | |
1890 | } | |
1891 | return 0; | |
1892 | } | |
1893 | #undef i | |
1894 | #undef s | |
1895 | #undef v | |
1896 | ||
1897 | /* FIXME: This one needs untangling and locking */ | |
1898 | int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm) | |
1899 | { | |
1900 | struct kbsentry *kbs; | |
1901 | char *p; | |
1902 | u_char *q; | |
1903 | u_char __user *up; | |
1904 | int sz; | |
1905 | int delta; | |
1906 | char *first_free, *fj, *fnw; | |
1907 | int i, j, k; | |
1908 | int ret; | |
1909 | ||
1910 | if (!capable(CAP_SYS_TTY_CONFIG)) | |
1911 | perm = 0; | |
1912 | ||
1913 | kbs = kmalloc(sizeof(*kbs), GFP_KERNEL); | |
1914 | if (!kbs) { | |
1915 | ret = -ENOMEM; | |
1916 | goto reterr; | |
1917 | } | |
1918 | ||
1919 | /* we mostly copy too much here (512bytes), but who cares ;) */ | |
1920 | if (copy_from_user(kbs, user_kdgkb, sizeof(struct kbsentry))) { | |
1921 | ret = -EFAULT; | |
1922 | goto reterr; | |
1923 | } | |
1924 | kbs->kb_string[sizeof(kbs->kb_string)-1] = '\0'; | |
1925 | i = kbs->kb_func; | |
1926 | ||
1927 | switch (cmd) { | |
1928 | case KDGKBSENT: | |
1929 | sz = sizeof(kbs->kb_string) - 1; /* sz should have been | |
1930 | a struct member */ | |
1931 | up = user_kdgkb->kb_string; | |
1932 | p = func_table[i]; | |
1933 | if(p) | |
1934 | for ( ; *p && sz; p++, sz--) | |
1935 | if (put_user(*p, up++)) { | |
1936 | ret = -EFAULT; | |
1937 | goto reterr; | |
1938 | } | |
1939 | if (put_user('\0', up)) { | |
1940 | ret = -EFAULT; | |
1941 | goto reterr; | |
1942 | } | |
1943 | kfree(kbs); | |
1944 | return ((p && *p) ? -EOVERFLOW : 0); | |
1945 | case KDSKBSENT: | |
1946 | if (!perm) { | |
1947 | ret = -EPERM; | |
1948 | goto reterr; | |
1949 | } | |
1950 | ||
1951 | q = func_table[i]; | |
1952 | first_free = funcbufptr + (funcbufsize - funcbufleft); | |
1953 | for (j = i+1; j < MAX_NR_FUNC && !func_table[j]; j++) | |
1954 | ; | |
1955 | if (j < MAX_NR_FUNC) | |
1956 | fj = func_table[j]; | |
1957 | else | |
1958 | fj = first_free; | |
1959 | ||
1960 | delta = (q ? -strlen(q) : 1) + strlen(kbs->kb_string); | |
1961 | if (delta <= funcbufleft) { /* it fits in current buf */ | |
1962 | if (j < MAX_NR_FUNC) { | |
1963 | memmove(fj + delta, fj, first_free - fj); | |
1964 | for (k = j; k < MAX_NR_FUNC; k++) | |
1965 | if (func_table[k]) | |
1966 | func_table[k] += delta; | |
1967 | } | |
1968 | if (!q) | |
1969 | func_table[i] = fj; | |
1970 | funcbufleft -= delta; | |
1971 | } else { /* allocate a larger buffer */ | |
1972 | sz = 256; | |
1973 | while (sz < funcbufsize - funcbufleft + delta) | |
1974 | sz <<= 1; | |
1975 | fnw = kmalloc(sz, GFP_KERNEL); | |
1976 | if(!fnw) { | |
1977 | ret = -ENOMEM; | |
1978 | goto reterr; | |
1979 | } | |
1980 | ||
1981 | if (!q) | |
1982 | func_table[i] = fj; | |
1983 | if (fj > funcbufptr) | |
1984 | memmove(fnw, funcbufptr, fj - funcbufptr); | |
1985 | for (k = 0; k < j; k++) | |
1986 | if (func_table[k]) | |
1987 | func_table[k] = fnw + (func_table[k] - funcbufptr); | |
1988 | ||
1989 | if (first_free > fj) { | |
1990 | memmove(fnw + (fj - funcbufptr) + delta, fj, first_free - fj); | |
1991 | for (k = j; k < MAX_NR_FUNC; k++) | |
1992 | if (func_table[k]) | |
1993 | func_table[k] = fnw + (func_table[k] - funcbufptr) + delta; | |
1994 | } | |
1995 | if (funcbufptr != func_buf) | |
1996 | kfree(funcbufptr); | |
1997 | funcbufptr = fnw; | |
1998 | funcbufleft = funcbufleft - delta + sz - funcbufsize; | |
1999 | funcbufsize = sz; | |
2000 | } | |
2001 | strcpy(func_table[i], kbs->kb_string); | |
2002 | break; | |
2003 | } | |
2004 | ret = 0; | |
2005 | reterr: | |
2006 | kfree(kbs); | |
2007 | return ret; | |
2008 | } | |
2009 | ||
2010 | int vt_do_kdskled(int console, int cmd, unsigned long arg, int perm) | |
2011 | { | |
2012 | struct kbd_struct * kbd = kbd_table + console; | |
2013 | unsigned long flags; | |
2014 | unsigned char ucval; | |
2015 | ||
2016 | switch(cmd) { | |
2017 | /* the ioctls below read/set the flags usually shown in the leds */ | |
2018 | /* don't use them - they will go away without warning */ | |
2019 | case KDGKBLED: | |
2020 | spin_lock_irqsave(&kbd_event_lock, flags); | |
2021 | ucval = kbd->ledflagstate | (kbd->default_ledflagstate << 4); | |
2022 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
2023 | return put_user(ucval, (char __user *)arg); | |
2024 | ||
2025 | case KDSKBLED: | |
2026 | if (!perm) | |
2027 | return -EPERM; | |
2028 | if (arg & ~0x77) | |
2029 | return -EINVAL; | |
2030 | spin_lock_irqsave(&kbd_event_lock, flags); | |
2031 | kbd->ledflagstate = (arg & 7); | |
2032 | kbd->default_ledflagstate = ((arg >> 4) & 7); | |
2033 | set_leds(); | |
2034 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
2035 | break; | |
2036 | ||
2037 | /* the ioctls below only set the lights, not the functions */ | |
2038 | /* for those, see KDGKBLED and KDSKBLED above */ | |
2039 | case KDGETLED: | |
2040 | ucval = getledstate(); | |
2041 | return put_user(ucval, (char __user *)arg); | |
2042 | ||
2043 | case KDSETLED: | |
2044 | if (!perm) | |
2045 | return -EPERM; | |
2046 | setledstate(kbd, arg); | |
2047 | return 0; | |
2048 | } | |
2049 | return -ENOIOCTLCMD; | |
2050 | } | |
2051 | ||
2052 | int vt_do_kdgkbmode(int console) | |
2053 | { | |
2054 | struct kbd_struct * kbd = kbd_table + console; | |
2055 | /* This is a spot read so needs no locking */ | |
2056 | switch (kbd->kbdmode) { | |
2057 | case VC_RAW: | |
2058 | return K_RAW; | |
2059 | case VC_MEDIUMRAW: | |
2060 | return K_MEDIUMRAW; | |
2061 | case VC_UNICODE: | |
2062 | return K_UNICODE; | |
2063 | case VC_OFF: | |
2064 | return K_OFF; | |
2065 | default: | |
2066 | return K_XLATE; | |
2067 | } | |
2068 | } | |
2069 | ||
2070 | /** | |
2071 | * vt_do_kdgkbmeta - report meta status | |
2072 | * @console: console to report | |
2073 | * | |
2074 | * Report the meta flag status of this console | |
2075 | */ | |
2076 | int vt_do_kdgkbmeta(int console) | |
2077 | { | |
2078 | struct kbd_struct * kbd = kbd_table + console; | |
2079 | /* Again a spot read so no locking */ | |
2080 | return vc_kbd_mode(kbd, VC_META) ? K_ESCPREFIX : K_METABIT; | |
2081 | } | |
2082 | ||
2083 | /** | |
2084 | * vt_reset_unicode - reset the unicode status | |
2085 | * @console: console being reset | |
2086 | * | |
2087 | * Restore the unicode console state to its default | |
2088 | */ | |
2089 | void vt_reset_unicode(int console) | |
2090 | { | |
2091 | unsigned long flags; | |
2092 | ||
2093 | spin_lock_irqsave(&kbd_event_lock, flags); | |
2094 | kbd_table[console].kbdmode = default_utf8 ? VC_UNICODE : VC_XLATE; | |
2095 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
2096 | } | |
2097 | ||
2098 | /** | |
2099 | * vt_get_shiftstate - shift bit state | |
2100 | * | |
2101 | * Report the shift bits from the keyboard state. We have to export | |
2102 | * this to support some oddities in the vt layer. | |
2103 | */ | |
2104 | int vt_get_shift_state(void) | |
2105 | { | |
2106 | /* Don't lock as this is a transient report */ | |
2107 | return shift_state; | |
2108 | } | |
2109 | ||
2110 | /** | |
2111 | * vt_reset_keyboard - reset keyboard state | |
2112 | * @console: console to reset | |
2113 | * | |
2114 | * Reset the keyboard bits for a console as part of a general console | |
2115 | * reset event | |
2116 | */ | |
2117 | void vt_reset_keyboard(int console) | |
2118 | { | |
2119 | struct kbd_struct * kbd = kbd_table + console; | |
2120 | unsigned long flags; | |
2121 | ||
2122 | spin_lock_irqsave(&kbd_event_lock, flags); | |
2123 | set_vc_kbd_mode(kbd, VC_REPEAT); | |
2124 | clr_vc_kbd_mode(kbd, VC_CKMODE); | |
2125 | clr_vc_kbd_mode(kbd, VC_APPLIC); | |
2126 | clr_vc_kbd_mode(kbd, VC_CRLF); | |
2127 | kbd->lockstate = 0; | |
2128 | kbd->slockstate = 0; | |
2129 | kbd->ledmode = LED_SHOW_FLAGS; | |
2130 | kbd->ledflagstate = kbd->default_ledflagstate; | |
2131 | /* do not do set_leds here because this causes an endless tasklet loop | |
2132 | when the keyboard hasn't been initialized yet */ | |
2133 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
2134 | } | |
2135 | ||
2136 | /** | |
2137 | * vt_get_kbd_mode_bit - read keyboard status bits | |
2138 | * @console: console to read from | |
2139 | * @bit: mode bit to read | |
2140 | * | |
2141 | * Report back a vt mode bit. We do this without locking so the | |
2142 | * caller must be sure that there are no synchronization needs | |
2143 | */ | |
2144 | ||
2145 | int vt_get_kbd_mode_bit(int console, int bit) | |
2146 | { | |
2147 | struct kbd_struct * kbd = kbd_table + console; | |
2148 | return vc_kbd_mode(kbd, bit); | |
2149 | } | |
2150 | ||
2151 | /** | |
2152 | * vt_set_kbd_mode_bit - read keyboard status bits | |
2153 | * @console: console to read from | |
2154 | * @bit: mode bit to read | |
2155 | * | |
2156 | * Set a vt mode bit. We do this without locking so the | |
2157 | * caller must be sure that there are no synchronization needs | |
2158 | */ | |
2159 | ||
2160 | void vt_set_kbd_mode_bit(int console, int bit) | |
2161 | { | |
2162 | struct kbd_struct * kbd = kbd_table + console; | |
2163 | unsigned long flags; | |
2164 | ||
2165 | spin_lock_irqsave(&kbd_event_lock, flags); | |
2166 | set_vc_kbd_mode(kbd, bit); | |
2167 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
2168 | } | |
2169 | ||
2170 | /** | |
2171 | * vt_clr_kbd_mode_bit - read keyboard status bits | |
2172 | * @console: console to read from | |
2173 | * @bit: mode bit to read | |
2174 | * | |
2175 | * Report back a vt mode bit. We do this without locking so the | |
2176 | * caller must be sure that there are no synchronization needs | |
2177 | */ | |
2178 | ||
2179 | void vt_clr_kbd_mode_bit(int console, int bit) | |
2180 | { | |
2181 | struct kbd_struct * kbd = kbd_table + console; | |
2182 | unsigned long flags; | |
2183 | ||
2184 | spin_lock_irqsave(&kbd_event_lock, flags); | |
2185 | clr_vc_kbd_mode(kbd, bit); | |
2186 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
2187 | } |