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Commit | Line | Data |
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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> | |
52355522 | 36 | #include <linux/leds.h> |
1da177e4 LT |
37 | |
38 | #include <linux/kbd_kern.h> | |
39 | #include <linux/kbd_diacr.h> | |
40 | #include <linux/vt_kern.h> | |
1da177e4 | 41 | #include <linux/input.h> |
83cc5ed3 | 42 | #include <linux/reboot.h> |
41ab4396 | 43 | #include <linux/notifier.h> |
b39b0440 | 44 | #include <linux/jiffies.h> |
6623d640 | 45 | #include <linux/uaccess.h> |
1da177e4 | 46 | |
98c2b373 GU |
47 | #include <asm/irq_regs.h> |
48 | ||
1da177e4 LT |
49 | extern void ctrl_alt_del(void); |
50 | ||
51 | /* | |
52 | * Exported functions/variables | |
53 | */ | |
54 | ||
55 | #define KBD_DEFMODE ((1 << VC_REPEAT) | (1 << VC_META)) | |
56 | ||
b2d0b7a0 JC |
57 | #if defined(CONFIG_X86) || defined(CONFIG_PARISC) |
58 | #include <asm/kbdleds.h> | |
1da177e4 | 59 | #else |
b2d0b7a0 JC |
60 | static inline int kbd_defleds(void) |
61 | { | |
62 | return 0; | |
63 | } | |
1da177e4 LT |
64 | #endif |
65 | ||
66 | #define KBD_DEFLOCK 0 | |
67 | ||
1da177e4 LT |
68 | /* |
69 | * Handler Tables. | |
70 | */ | |
71 | ||
72 | #define K_HANDLERS\ | |
73 | k_self, k_fn, k_spec, k_pad,\ | |
74 | k_dead, k_cons, k_cur, k_shift,\ | |
75 | k_meta, k_ascii, k_lock, k_lowercase,\ | |
b9ec4e10 | 76 | k_slock, k_dead2, k_brl, k_ignore |
1da177e4 | 77 | |
fe1e8604 | 78 | typedef void (k_handler_fn)(struct vc_data *vc, unsigned char value, |
7d12e780 | 79 | char up_flag); |
1da177e4 | 80 | static k_handler_fn K_HANDLERS; |
97f5f0cd | 81 | static k_handler_fn *k_handler[16] = { K_HANDLERS }; |
1da177e4 LT |
82 | |
83 | #define FN_HANDLERS\ | |
fe1e8604 DT |
84 | fn_null, fn_enter, fn_show_ptregs, fn_show_mem,\ |
85 | fn_show_state, fn_send_intr, fn_lastcons, fn_caps_toggle,\ | |
86 | fn_num, fn_hold, fn_scroll_forw, fn_scroll_back,\ | |
87 | fn_boot_it, fn_caps_on, fn_compose, fn_SAK,\ | |
88 | fn_dec_console, fn_inc_console, fn_spawn_con, fn_bare_num | |
1da177e4 | 89 | |
7d12e780 | 90 | typedef void (fn_handler_fn)(struct vc_data *vc); |
1da177e4 LT |
91 | static fn_handler_fn FN_HANDLERS; |
92 | static fn_handler_fn *fn_handler[] = { FN_HANDLERS }; | |
93 | ||
94 | /* | |
95 | * Variables exported for vt_ioctl.c | |
96 | */ | |
97 | ||
81af8d67 | 98 | struct vt_spawn_console vt_spawn_con = { |
ccc94256 | 99 | .lock = __SPIN_LOCK_UNLOCKED(vt_spawn_con.lock), |
81af8d67 EB |
100 | .pid = NULL, |
101 | .sig = 0, | |
102 | }; | |
1da177e4 | 103 | |
1da177e4 LT |
104 | |
105 | /* | |
106 | * Internal Data. | |
107 | */ | |
108 | ||
079c9534 AC |
109 | static struct kbd_struct kbd_table[MAX_NR_CONSOLES]; |
110 | static struct kbd_struct *kbd = kbd_table; | |
111 | ||
112 | /* maximum values each key_handler can handle */ | |
113 | static const int max_vals[] = { | |
114 | 255, ARRAY_SIZE(func_table) - 1, ARRAY_SIZE(fn_handler) - 1, NR_PAD - 1, | |
115 | NR_DEAD - 1, 255, 3, NR_SHIFT - 1, 255, NR_ASCII - 1, NR_LOCK - 1, | |
116 | 255, NR_LOCK - 1, 255, NR_BRL - 1 | |
117 | }; | |
118 | ||
119 | static const int NR_TYPES = ARRAY_SIZE(max_vals); | |
120 | ||
1da177e4 | 121 | static struct input_handler kbd_handler; |
21cea58e | 122 | static DEFINE_SPINLOCK(kbd_event_lock); |
3db1ddb7 | 123 | static DEFINE_SPINLOCK(led_lock); |
7b19ada2 | 124 | static unsigned long key_down[BITS_TO_LONGS(KEY_CNT)]; /* keyboard key bitmap */ |
1da177e4 | 125 | static unsigned char shift_down[NR_SHIFT]; /* shift state counters.. */ |
e0785572 | 126 | static bool dead_key_next; |
1da177e4 | 127 | static int npadch = -1; /* -1 or number assembled on pad */ |
b9ec4e10 | 128 | static unsigned int diacr; |
1da177e4 LT |
129 | static char rep; /* flag telling character repeat */ |
130 | ||
079c9534 AC |
131 | static int shift_state = 0; |
132 | ||
eeb64c14 | 133 | static unsigned int ledstate = -1U; /* undefined */ |
1da177e4 LT |
134 | static unsigned char ledioctl; |
135 | ||
41ab4396 ST |
136 | /* |
137 | * Notifier list for console keyboard events | |
138 | */ | |
139 | static ATOMIC_NOTIFIER_HEAD(keyboard_notifier_list); | |
140 | ||
141 | int register_keyboard_notifier(struct notifier_block *nb) | |
142 | { | |
143 | return atomic_notifier_chain_register(&keyboard_notifier_list, nb); | |
144 | } | |
145 | EXPORT_SYMBOL_GPL(register_keyboard_notifier); | |
146 | ||
147 | int unregister_keyboard_notifier(struct notifier_block *nb) | |
148 | { | |
149 | return atomic_notifier_chain_unregister(&keyboard_notifier_list, nb); | |
150 | } | |
151 | EXPORT_SYMBOL_GPL(unregister_keyboard_notifier); | |
152 | ||
1da177e4 | 153 | /* |
c8e4c772 MR |
154 | * Translation of scancodes to keycodes. We set them on only the first |
155 | * keyboard in the list that accepts the scancode and keycode. | |
156 | * Explanation for not choosing the first attached keyboard anymore: | |
157 | * USB keyboards for example have two event devices: one for all "normal" | |
158 | * keys and one for extra function keys (like "volume up", "make coffee", | |
159 | * etc.). So this means that scancodes for the extra function keys won't | |
160 | * be valid for the first event device, but will be for the second. | |
1da177e4 | 161 | */ |
66d2a595 DT |
162 | |
163 | struct getset_keycode_data { | |
8613e4c2 | 164 | struct input_keymap_entry ke; |
66d2a595 DT |
165 | int error; |
166 | }; | |
167 | ||
168 | static int getkeycode_helper(struct input_handle *handle, void *data) | |
169 | { | |
170 | struct getset_keycode_data *d = data; | |
171 | ||
8613e4c2 | 172 | d->error = input_get_keycode(handle->dev, &d->ke); |
66d2a595 DT |
173 | |
174 | return d->error == 0; /* stop as soon as we successfully get one */ | |
175 | } | |
176 | ||
079c9534 | 177 | static int getkeycode(unsigned int scancode) |
1da177e4 | 178 | { |
8613e4c2 MCC |
179 | struct getset_keycode_data d = { |
180 | .ke = { | |
181 | .flags = 0, | |
182 | .len = sizeof(scancode), | |
183 | .keycode = 0, | |
184 | }, | |
185 | .error = -ENODEV, | |
186 | }; | |
187 | ||
188 | memcpy(d.ke.scancode, &scancode, sizeof(scancode)); | |
c8e4c772 | 189 | |
66d2a595 | 190 | input_handler_for_each_handle(&kbd_handler, &d, getkeycode_helper); |
1da177e4 | 191 | |
8613e4c2 | 192 | return d.error ?: d.ke.keycode; |
66d2a595 DT |
193 | } |
194 | ||
195 | static int setkeycode_helper(struct input_handle *handle, void *data) | |
196 | { | |
197 | struct getset_keycode_data *d = data; | |
198 | ||
8613e4c2 | 199 | d->error = input_set_keycode(handle->dev, &d->ke); |
66d2a595 DT |
200 | |
201 | return d->error == 0; /* stop as soon as we successfully set one */ | |
1da177e4 LT |
202 | } |
203 | ||
079c9534 | 204 | static int setkeycode(unsigned int scancode, unsigned int keycode) |
1da177e4 | 205 | { |
8613e4c2 MCC |
206 | struct getset_keycode_data d = { |
207 | .ke = { | |
208 | .flags = 0, | |
209 | .len = sizeof(scancode), | |
210 | .keycode = keycode, | |
211 | }, | |
212 | .error = -ENODEV, | |
213 | }; | |
214 | ||
215 | memcpy(d.ke.scancode, &scancode, sizeof(scancode)); | |
c8e4c772 | 216 | |
66d2a595 | 217 | input_handler_for_each_handle(&kbd_handler, &d, setkeycode_helper); |
1da177e4 | 218 | |
66d2a595 | 219 | return d.error; |
1da177e4 LT |
220 | } |
221 | ||
222 | /* | |
18f7ad59 DT |
223 | * Making beeps and bells. Note that we prefer beeps to bells, but when |
224 | * shutting the sound off we do both. | |
1da177e4 | 225 | */ |
66d2a595 DT |
226 | |
227 | static int kd_sound_helper(struct input_handle *handle, void *data) | |
1da177e4 | 228 | { |
66d2a595 DT |
229 | unsigned int *hz = data; |
230 | struct input_dev *dev = handle->dev; | |
1da177e4 | 231 | |
66d2a595 | 232 | if (test_bit(EV_SND, dev->evbit)) { |
18f7ad59 | 233 | if (test_bit(SND_TONE, dev->sndbit)) { |
66d2a595 | 234 | input_inject_event(handle, EV_SND, SND_TONE, *hz); |
18f7ad59 DT |
235 | if (*hz) |
236 | return 0; | |
237 | } | |
238 | if (test_bit(SND_BELL, dev->sndbit)) | |
66d2a595 | 239 | input_inject_event(handle, EV_SND, SND_BELL, *hz ? 1 : 0); |
1da177e4 | 240 | } |
66d2a595 DT |
241 | |
242 | return 0; | |
243 | } | |
244 | ||
245 | static void kd_nosound(unsigned long ignored) | |
246 | { | |
247 | static unsigned int zero; | |
248 | ||
249 | input_handler_for_each_handle(&kbd_handler, &zero, kd_sound_helper); | |
1da177e4 LT |
250 | } |
251 | ||
8d06afab | 252 | static DEFINE_TIMER(kd_mksound_timer, kd_nosound, 0, 0); |
1da177e4 LT |
253 | |
254 | void kd_mksound(unsigned int hz, unsigned int ticks) | |
255 | { | |
66d2a595 | 256 | del_timer_sync(&kd_mksound_timer); |
1da177e4 | 257 | |
66d2a595 | 258 | input_handler_for_each_handle(&kbd_handler, &hz, kd_sound_helper); |
1da177e4 | 259 | |
66d2a595 DT |
260 | if (hz && ticks) |
261 | mod_timer(&kd_mksound_timer, jiffies + ticks); | |
1da177e4 | 262 | } |
f7511d5f | 263 | EXPORT_SYMBOL(kd_mksound); |
1da177e4 LT |
264 | |
265 | /* | |
266 | * Setting the keyboard rate. | |
267 | */ | |
268 | ||
66d2a595 | 269 | static int kbd_rate_helper(struct input_handle *handle, void *data) |
1da177e4 | 270 | { |
66d2a595 | 271 | struct input_dev *dev = handle->dev; |
9d329c1c | 272 | struct kbd_repeat *rpt = data; |
66d2a595 DT |
273 | |
274 | if (test_bit(EV_REP, dev->evbit)) { | |
275 | ||
9d329c1c | 276 | if (rpt[0].delay > 0) |
66d2a595 | 277 | input_inject_event(handle, |
9d329c1c MR |
278 | EV_REP, REP_DELAY, rpt[0].delay); |
279 | if (rpt[0].period > 0) | |
66d2a595 | 280 | input_inject_event(handle, |
9d329c1c | 281 | EV_REP, REP_PERIOD, rpt[0].period); |
66d2a595 | 282 | |
9d329c1c MR |
283 | rpt[1].delay = dev->rep[REP_DELAY]; |
284 | rpt[1].period = dev->rep[REP_PERIOD]; | |
1da177e4 | 285 | } |
66d2a595 DT |
286 | |
287 | return 0; | |
288 | } | |
289 | ||
9d329c1c | 290 | int kbd_rate(struct kbd_repeat *rpt) |
66d2a595 | 291 | { |
9d329c1c | 292 | struct kbd_repeat data[2] = { *rpt }; |
66d2a595 DT |
293 | |
294 | input_handler_for_each_handle(&kbd_handler, data, kbd_rate_helper); | |
9d329c1c | 295 | *rpt = data[1]; /* Copy currently used settings */ |
66d2a595 | 296 | |
1da177e4 LT |
297 | return 0; |
298 | } | |
299 | ||
300 | /* | |
301 | * Helper Functions. | |
302 | */ | |
303 | static void put_queue(struct vc_data *vc, int ch) | |
304 | { | |
92a19f9c | 305 | tty_insert_flip_char(&vc->port, ch, 0); |
6732c8bb | 306 | tty_schedule_flip(&vc->port); |
1da177e4 LT |
307 | } |
308 | ||
309 | static void puts_queue(struct vc_data *vc, char *cp) | |
310 | { | |
1da177e4 | 311 | while (*cp) { |
92a19f9c | 312 | tty_insert_flip_char(&vc->port, *cp, 0); |
1da177e4 LT |
313 | cp++; |
314 | } | |
6732c8bb | 315 | tty_schedule_flip(&vc->port); |
1da177e4 LT |
316 | } |
317 | ||
318 | static void applkey(struct vc_data *vc, int key, char mode) | |
319 | { | |
320 | static char buf[] = { 0x1b, 'O', 0x00, 0x00 }; | |
321 | ||
322 | buf[1] = (mode ? 'O' : '['); | |
323 | buf[2] = key; | |
324 | puts_queue(vc, buf); | |
325 | } | |
326 | ||
327 | /* | |
328 | * Many other routines do put_queue, but I think either | |
329 | * they produce ASCII, or they produce some user-assigned | |
330 | * string, and in both cases we might assume that it is | |
759448f4 | 331 | * in utf-8 already. |
1da177e4 | 332 | */ |
759448f4 | 333 | static void to_utf8(struct vc_data *vc, uint c) |
1da177e4 LT |
334 | { |
335 | if (c < 0x80) | |
336 | /* 0******* */ | |
337 | put_queue(vc, c); | |
fe1e8604 | 338 | else if (c < 0x800) { |
1da177e4 | 339 | /* 110***** 10****** */ |
fe1e8604 | 340 | put_queue(vc, 0xc0 | (c >> 6)); |
1da177e4 | 341 | put_queue(vc, 0x80 | (c & 0x3f)); |
e0785572 DT |
342 | } else if (c < 0x10000) { |
343 | if (c >= 0xD800 && c < 0xE000) | |
759448f4 JE |
344 | return; |
345 | if (c == 0xFFFF) | |
346 | return; | |
1da177e4 LT |
347 | /* 1110**** 10****** 10****** */ |
348 | put_queue(vc, 0xe0 | (c >> 12)); | |
349 | put_queue(vc, 0x80 | ((c >> 6) & 0x3f)); | |
350 | put_queue(vc, 0x80 | (c & 0x3f)); | |
e0785572 | 351 | } else if (c < 0x110000) { |
759448f4 JE |
352 | /* 11110*** 10****** 10****** 10****** */ |
353 | put_queue(vc, 0xf0 | (c >> 18)); | |
354 | put_queue(vc, 0x80 | ((c >> 12) & 0x3f)); | |
355 | put_queue(vc, 0x80 | ((c >> 6) & 0x3f)); | |
356 | put_queue(vc, 0x80 | (c & 0x3f)); | |
fe1e8604 | 357 | } |
1da177e4 LT |
358 | } |
359 | ||
fe1e8604 | 360 | /* |
1da177e4 LT |
361 | * Called after returning from RAW mode or when changing consoles - recompute |
362 | * shift_down[] and shift_state from key_down[] maybe called when keymap is | |
079c9534 AC |
363 | * undefined, so that shiftkey release is seen. The caller must hold the |
364 | * kbd_event_lock. | |
1da177e4 | 365 | */ |
079c9534 AC |
366 | |
367 | static void do_compute_shiftstate(void) | |
1da177e4 LT |
368 | { |
369 | unsigned int i, j, k, sym, val; | |
370 | ||
371 | shift_state = 0; | |
372 | memset(shift_down, 0, sizeof(shift_down)); | |
fe1e8604 | 373 | |
1da177e4 LT |
374 | for (i = 0; i < ARRAY_SIZE(key_down); i++) { |
375 | ||
376 | if (!key_down[i]) | |
377 | continue; | |
378 | ||
379 | k = i * BITS_PER_LONG; | |
380 | ||
381 | for (j = 0; j < BITS_PER_LONG; j++, k++) { | |
382 | ||
383 | if (!test_bit(k, key_down)) | |
384 | continue; | |
385 | ||
386 | sym = U(key_maps[0][k]); | |
387 | if (KTYP(sym) != KT_SHIFT && KTYP(sym) != KT_SLOCK) | |
388 | continue; | |
389 | ||
390 | val = KVAL(sym); | |
391 | if (val == KVAL(K_CAPSSHIFT)) | |
392 | val = KVAL(K_SHIFT); | |
393 | ||
394 | shift_down[val]++; | |
395 | shift_state |= (1 << val); | |
396 | } | |
397 | } | |
398 | } | |
399 | ||
079c9534 AC |
400 | /* We still have to export this method to vt.c */ |
401 | void compute_shiftstate(void) | |
402 | { | |
403 | unsigned long flags; | |
404 | spin_lock_irqsave(&kbd_event_lock, flags); | |
405 | do_compute_shiftstate(); | |
406 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
407 | } | |
408 | ||
1da177e4 LT |
409 | /* |
410 | * We have a combining character DIACR here, followed by the character CH. | |
411 | * If the combination occurs in the table, return the corresponding value. | |
412 | * Otherwise, if CH is a space or equals DIACR, return DIACR. | |
413 | * Otherwise, conclude that DIACR was not combining after all, | |
414 | * queue it and return CH. | |
415 | */ | |
b9ec4e10 | 416 | static unsigned int handle_diacr(struct vc_data *vc, unsigned int ch) |
1da177e4 | 417 | { |
b9ec4e10 | 418 | unsigned int d = diacr; |
1da177e4 LT |
419 | unsigned int i; |
420 | ||
421 | diacr = 0; | |
422 | ||
b9ec4e10 ST |
423 | if ((d & ~0xff) == BRL_UC_ROW) { |
424 | if ((ch & ~0xff) == BRL_UC_ROW) | |
425 | return d | ch; | |
426 | } else { | |
427 | for (i = 0; i < accent_table_size; i++) | |
428 | if (accent_table[i].diacr == d && accent_table[i].base == ch) | |
429 | return accent_table[i].result; | |
1da177e4 LT |
430 | } |
431 | ||
b9ec4e10 | 432 | if (ch == ' ' || ch == (BRL_UC_ROW|0) || ch == d) |
1da177e4 LT |
433 | return d; |
434 | ||
b9ec4e10 | 435 | if (kbd->kbdmode == VC_UNICODE) |
04c71976 ST |
436 | to_utf8(vc, d); |
437 | else { | |
438 | int c = conv_uni_to_8bit(d); | |
439 | if (c != -1) | |
440 | put_queue(vc, c); | |
441 | } | |
b9ec4e10 | 442 | |
1da177e4 LT |
443 | return ch; |
444 | } | |
445 | ||
446 | /* | |
447 | * Special function handlers | |
448 | */ | |
7d12e780 | 449 | static void fn_enter(struct vc_data *vc) |
1da177e4 LT |
450 | { |
451 | if (diacr) { | |
b9ec4e10 | 452 | if (kbd->kbdmode == VC_UNICODE) |
04c71976 ST |
453 | to_utf8(vc, diacr); |
454 | else { | |
455 | int c = conv_uni_to_8bit(diacr); | |
456 | if (c != -1) | |
457 | put_queue(vc, c); | |
458 | } | |
1da177e4 LT |
459 | diacr = 0; |
460 | } | |
e0785572 | 461 | |
1da177e4 LT |
462 | put_queue(vc, 13); |
463 | if (vc_kbd_mode(kbd, VC_CRLF)) | |
464 | put_queue(vc, 10); | |
465 | } | |
466 | ||
7d12e780 | 467 | static void fn_caps_toggle(struct vc_data *vc) |
1da177e4 LT |
468 | { |
469 | if (rep) | |
470 | return; | |
e0785572 | 471 | |
1da177e4 LT |
472 | chg_vc_kbd_led(kbd, VC_CAPSLOCK); |
473 | } | |
474 | ||
7d12e780 | 475 | static void fn_caps_on(struct vc_data *vc) |
1da177e4 LT |
476 | { |
477 | if (rep) | |
478 | return; | |
e0785572 | 479 | |
1da177e4 LT |
480 | set_vc_kbd_led(kbd, VC_CAPSLOCK); |
481 | } | |
482 | ||
7d12e780 | 483 | static void fn_show_ptregs(struct vc_data *vc) |
1da177e4 | 484 | { |
7d12e780 | 485 | struct pt_regs *regs = get_irq_regs(); |
e0785572 | 486 | |
1da177e4 LT |
487 | if (regs) |
488 | show_regs(regs); | |
489 | } | |
490 | ||
7d12e780 | 491 | static void fn_hold(struct vc_data *vc) |
1da177e4 | 492 | { |
8ce73264 | 493 | struct tty_struct *tty = vc->port.tty; |
1da177e4 LT |
494 | |
495 | if (rep || !tty) | |
496 | return; | |
497 | ||
498 | /* | |
499 | * Note: SCROLLOCK will be set (cleared) by stop_tty (start_tty); | |
500 | * these routines are also activated by ^S/^Q. | |
501 | * (And SCROLLOCK can also be set by the ioctl KDSKBLED.) | |
502 | */ | |
503 | if (tty->stopped) | |
504 | start_tty(tty); | |
505 | else | |
506 | stop_tty(tty); | |
507 | } | |
508 | ||
7d12e780 | 509 | static void fn_num(struct vc_data *vc) |
1da177e4 | 510 | { |
e0785572 | 511 | if (vc_kbd_mode(kbd, VC_APPLIC)) |
1da177e4 LT |
512 | applkey(vc, 'P', 1); |
513 | else | |
7d12e780 | 514 | fn_bare_num(vc); |
1da177e4 LT |
515 | } |
516 | ||
517 | /* | |
518 | * Bind this to Shift-NumLock if you work in application keypad mode | |
519 | * but want to be able to change the NumLock flag. | |
520 | * Bind this to NumLock if you prefer that the NumLock key always | |
521 | * changes the NumLock flag. | |
522 | */ | |
7d12e780 | 523 | static void fn_bare_num(struct vc_data *vc) |
1da177e4 LT |
524 | { |
525 | if (!rep) | |
526 | chg_vc_kbd_led(kbd, VC_NUMLOCK); | |
527 | } | |
528 | ||
7d12e780 | 529 | static void fn_lastcons(struct vc_data *vc) |
1da177e4 LT |
530 | { |
531 | /* switch to the last used console, ChN */ | |
532 | set_console(last_console); | |
533 | } | |
534 | ||
7d12e780 | 535 | static void fn_dec_console(struct vc_data *vc) |
1da177e4 LT |
536 | { |
537 | int i, cur = fg_console; | |
538 | ||
539 | /* Currently switching? Queue this next switch relative to that. */ | |
540 | if (want_console != -1) | |
541 | cur = want_console; | |
542 | ||
fe1e8604 | 543 | for (i = cur - 1; i != cur; i--) { |
1da177e4 | 544 | if (i == -1) |
fe1e8604 | 545 | i = MAX_NR_CONSOLES - 1; |
1da177e4 LT |
546 | if (vc_cons_allocated(i)) |
547 | break; | |
548 | } | |
549 | set_console(i); | |
550 | } | |
551 | ||
7d12e780 | 552 | static void fn_inc_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 | ||
560 | for (i = cur+1; i != cur; i++) { | |
561 | if (i == MAX_NR_CONSOLES) | |
562 | i = 0; | |
563 | if (vc_cons_allocated(i)) | |
564 | break; | |
565 | } | |
566 | set_console(i); | |
567 | } | |
568 | ||
7d12e780 | 569 | static void fn_send_intr(struct vc_data *vc) |
1da177e4 | 570 | { |
92a19f9c | 571 | tty_insert_flip_char(&vc->port, 0, TTY_BREAK); |
6732c8bb | 572 | tty_schedule_flip(&vc->port); |
1da177e4 LT |
573 | } |
574 | ||
7d12e780 | 575 | static void fn_scroll_forw(struct vc_data *vc) |
1da177e4 LT |
576 | { |
577 | scrollfront(vc, 0); | |
578 | } | |
579 | ||
7d12e780 | 580 | static void fn_scroll_back(struct vc_data *vc) |
1da177e4 LT |
581 | { |
582 | scrollback(vc, 0); | |
583 | } | |
584 | ||
7d12e780 | 585 | static void fn_show_mem(struct vc_data *vc) |
1da177e4 | 586 | { |
b2b755b5 | 587 | show_mem(0); |
1da177e4 LT |
588 | } |
589 | ||
7d12e780 | 590 | static void fn_show_state(struct vc_data *vc) |
1da177e4 LT |
591 | { |
592 | show_state(); | |
593 | } | |
594 | ||
7d12e780 | 595 | static void fn_boot_it(struct vc_data *vc) |
1da177e4 LT |
596 | { |
597 | ctrl_alt_del(); | |
598 | } | |
599 | ||
7d12e780 | 600 | static void fn_compose(struct vc_data *vc) |
1da177e4 | 601 | { |
e0785572 | 602 | dead_key_next = true; |
1da177e4 LT |
603 | } |
604 | ||
7d12e780 | 605 | static void fn_spawn_con(struct vc_data *vc) |
1da177e4 | 606 | { |
81af8d67 EB |
607 | spin_lock(&vt_spawn_con.lock); |
608 | if (vt_spawn_con.pid) | |
609 | if (kill_pid(vt_spawn_con.pid, vt_spawn_con.sig, 1)) { | |
610 | put_pid(vt_spawn_con.pid); | |
611 | vt_spawn_con.pid = NULL; | |
612 | } | |
613 | spin_unlock(&vt_spawn_con.lock); | |
1da177e4 LT |
614 | } |
615 | ||
7d12e780 | 616 | static void fn_SAK(struct vc_data *vc) |
1da177e4 | 617 | { |
8b6312f4 | 618 | struct work_struct *SAK_work = &vc_cons[fg_console].SAK_work; |
8b6312f4 | 619 | schedule_work(SAK_work); |
1da177e4 LT |
620 | } |
621 | ||
7d12e780 | 622 | static void fn_null(struct vc_data *vc) |
1da177e4 | 623 | { |
079c9534 | 624 | do_compute_shiftstate(); |
1da177e4 LT |
625 | } |
626 | ||
627 | /* | |
628 | * Special key handlers | |
629 | */ | |
7d12e780 | 630 | static void k_ignore(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 LT |
631 | { |
632 | } | |
633 | ||
7d12e780 | 634 | static void k_spec(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 LT |
635 | { |
636 | if (up_flag) | |
637 | return; | |
638 | if (value >= ARRAY_SIZE(fn_handler)) | |
639 | return; | |
fe1e8604 | 640 | if ((kbd->kbdmode == VC_RAW || |
9fc3de9c AT |
641 | kbd->kbdmode == VC_MEDIUMRAW || |
642 | kbd->kbdmode == VC_OFF) && | |
1da177e4 LT |
643 | value != KVAL(K_SAK)) |
644 | return; /* SAK is allowed even in raw mode */ | |
7d12e780 | 645 | fn_handler[value](vc); |
1da177e4 LT |
646 | } |
647 | ||
7d12e780 | 648 | static void k_lowercase(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 | 649 | { |
9272e9a2 | 650 | pr_err("k_lowercase was called - impossible\n"); |
1da177e4 LT |
651 | } |
652 | ||
7d12e780 | 653 | static void k_unicode(struct vc_data *vc, unsigned int value, char up_flag) |
1da177e4 LT |
654 | { |
655 | if (up_flag) | |
656 | return; /* no action, if this is a key release */ | |
657 | ||
658 | if (diacr) | |
659 | value = handle_diacr(vc, value); | |
660 | ||
661 | if (dead_key_next) { | |
e0785572 | 662 | dead_key_next = false; |
1da177e4 LT |
663 | diacr = value; |
664 | return; | |
665 | } | |
b9ec4e10 | 666 | if (kbd->kbdmode == VC_UNICODE) |
04c71976 ST |
667 | to_utf8(vc, value); |
668 | else { | |
669 | int c = conv_uni_to_8bit(value); | |
670 | if (c != -1) | |
671 | put_queue(vc, c); | |
672 | } | |
1da177e4 LT |
673 | } |
674 | ||
675 | /* | |
676 | * Handle dead key. Note that we now may have several | |
677 | * dead keys modifying the same character. Very useful | |
678 | * for Vietnamese. | |
679 | */ | |
7d12e780 | 680 | static void k_deadunicode(struct vc_data *vc, unsigned int value, char up_flag) |
1da177e4 LT |
681 | { |
682 | if (up_flag) | |
683 | return; | |
e0785572 | 684 | |
1da177e4 LT |
685 | diacr = (diacr ? handle_diacr(vc, value) : value); |
686 | } | |
687 | ||
7d12e780 | 688 | static void k_self(struct vc_data *vc, unsigned char value, char up_flag) |
b9ec4e10 | 689 | { |
d2187ebd | 690 | k_unicode(vc, conv_8bit_to_uni(value), up_flag); |
b9ec4e10 ST |
691 | } |
692 | ||
7d12e780 | 693 | static void k_dead2(struct vc_data *vc, unsigned char value, char up_flag) |
b9ec4e10 | 694 | { |
7d12e780 | 695 | k_deadunicode(vc, value, up_flag); |
b9ec4e10 ST |
696 | } |
697 | ||
1da177e4 LT |
698 | /* |
699 | * Obsolete - for backwards compatibility only | |
700 | */ | |
7d12e780 | 701 | static void k_dead(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 | 702 | { |
0f5e560e | 703 | static const unsigned char ret_diacr[NR_DEAD] = {'`', '\'', '^', '~', '"', ',' }; |
e0785572 DT |
704 | |
705 | k_deadunicode(vc, ret_diacr[value], up_flag); | |
1da177e4 LT |
706 | } |
707 | ||
7d12e780 | 708 | static void k_cons(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 LT |
709 | { |
710 | if (up_flag) | |
711 | return; | |
e0785572 | 712 | |
1da177e4 LT |
713 | set_console(value); |
714 | } | |
715 | ||
7d12e780 | 716 | static void k_fn(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 | 717 | { |
1da177e4 LT |
718 | if (up_flag) |
719 | return; | |
e0785572 DT |
720 | |
721 | if ((unsigned)value < ARRAY_SIZE(func_table)) { | |
1da177e4 LT |
722 | if (func_table[value]) |
723 | puts_queue(vc, func_table[value]); | |
724 | } else | |
9272e9a2 | 725 | pr_err("k_fn called with value=%d\n", value); |
1da177e4 LT |
726 | } |
727 | ||
7d12e780 | 728 | static void k_cur(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 | 729 | { |
e52b29c2 | 730 | static const char cur_chars[] = "BDCA"; |
1da177e4 LT |
731 | |
732 | if (up_flag) | |
733 | return; | |
e0785572 | 734 | |
1da177e4 LT |
735 | applkey(vc, cur_chars[value], vc_kbd_mode(kbd, VC_CKMODE)); |
736 | } | |
737 | ||
7d12e780 | 738 | static void k_pad(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 | 739 | { |
0f5e560e AM |
740 | static const char pad_chars[] = "0123456789+-*/\015,.?()#"; |
741 | static const char app_map[] = "pqrstuvwxylSRQMnnmPQS"; | |
1da177e4 LT |
742 | |
743 | if (up_flag) | |
744 | return; /* no action, if this is a key release */ | |
745 | ||
746 | /* kludge... shift forces cursor/number keys */ | |
747 | if (vc_kbd_mode(kbd, VC_APPLIC) && !shift_down[KG_SHIFT]) { | |
748 | applkey(vc, app_map[value], 1); | |
749 | return; | |
750 | } | |
751 | ||
e0785572 DT |
752 | if (!vc_kbd_led(kbd, VC_NUMLOCK)) { |
753 | ||
1da177e4 | 754 | switch (value) { |
e0785572 DT |
755 | case KVAL(K_PCOMMA): |
756 | case KVAL(K_PDOT): | |
757 | k_fn(vc, KVAL(K_REMOVE), 0); | |
758 | return; | |
759 | case KVAL(K_P0): | |
760 | k_fn(vc, KVAL(K_INSERT), 0); | |
761 | return; | |
762 | case KVAL(K_P1): | |
763 | k_fn(vc, KVAL(K_SELECT), 0); | |
764 | return; | |
765 | case KVAL(K_P2): | |
766 | k_cur(vc, KVAL(K_DOWN), 0); | |
767 | return; | |
768 | case KVAL(K_P3): | |
769 | k_fn(vc, KVAL(K_PGDN), 0); | |
770 | return; | |
771 | case KVAL(K_P4): | |
772 | k_cur(vc, KVAL(K_LEFT), 0); | |
773 | return; | |
774 | case KVAL(K_P6): | |
775 | k_cur(vc, KVAL(K_RIGHT), 0); | |
776 | return; | |
777 | case KVAL(K_P7): | |
778 | k_fn(vc, KVAL(K_FIND), 0); | |
779 | return; | |
780 | case KVAL(K_P8): | |
781 | k_cur(vc, KVAL(K_UP), 0); | |
782 | return; | |
783 | case KVAL(K_P9): | |
784 | k_fn(vc, KVAL(K_PGUP), 0); | |
785 | return; | |
786 | case KVAL(K_P5): | |
787 | applkey(vc, 'G', vc_kbd_mode(kbd, VC_APPLIC)); | |
788 | return; | |
1da177e4 | 789 | } |
e0785572 | 790 | } |
1da177e4 LT |
791 | |
792 | put_queue(vc, pad_chars[value]); | |
793 | if (value == KVAL(K_PENTER) && vc_kbd_mode(kbd, VC_CRLF)) | |
794 | put_queue(vc, 10); | |
795 | } | |
796 | ||
7d12e780 | 797 | static void k_shift(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 LT |
798 | { |
799 | int old_state = shift_state; | |
800 | ||
801 | if (rep) | |
802 | return; | |
803 | /* | |
804 | * Mimic typewriter: | |
805 | * a CapsShift key acts like Shift but undoes CapsLock | |
806 | */ | |
807 | if (value == KVAL(K_CAPSSHIFT)) { | |
808 | value = KVAL(K_SHIFT); | |
809 | if (!up_flag) | |
810 | clr_vc_kbd_led(kbd, VC_CAPSLOCK); | |
811 | } | |
812 | ||
813 | if (up_flag) { | |
814 | /* | |
815 | * handle the case that two shift or control | |
816 | * keys are depressed simultaneously | |
817 | */ | |
818 | if (shift_down[value]) | |
819 | shift_down[value]--; | |
820 | } else | |
821 | shift_down[value]++; | |
822 | ||
823 | if (shift_down[value]) | |
824 | shift_state |= (1 << value); | |
825 | else | |
826 | shift_state &= ~(1 << value); | |
827 | ||
828 | /* kludge */ | |
829 | if (up_flag && shift_state != old_state && npadch != -1) { | |
830 | if (kbd->kbdmode == VC_UNICODE) | |
759448f4 | 831 | to_utf8(vc, npadch); |
1da177e4 LT |
832 | else |
833 | put_queue(vc, npadch & 0xff); | |
834 | npadch = -1; | |
835 | } | |
836 | } | |
837 | ||
7d12e780 | 838 | static void k_meta(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 LT |
839 | { |
840 | if (up_flag) | |
841 | return; | |
842 | ||
843 | if (vc_kbd_mode(kbd, VC_META)) { | |
844 | put_queue(vc, '\033'); | |
845 | put_queue(vc, value); | |
846 | } else | |
847 | put_queue(vc, value | 0x80); | |
848 | } | |
849 | ||
7d12e780 | 850 | static void k_ascii(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 LT |
851 | { |
852 | int base; | |
853 | ||
854 | if (up_flag) | |
855 | return; | |
856 | ||
857 | if (value < 10) { | |
858 | /* decimal input of code, while Alt depressed */ | |
859 | base = 10; | |
860 | } else { | |
861 | /* hexadecimal input of code, while AltGr depressed */ | |
862 | value -= 10; | |
863 | base = 16; | |
864 | } | |
865 | ||
866 | if (npadch == -1) | |
867 | npadch = value; | |
868 | else | |
869 | npadch = npadch * base + value; | |
870 | } | |
871 | ||
7d12e780 | 872 | static void k_lock(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 LT |
873 | { |
874 | if (up_flag || rep) | |
875 | return; | |
e0785572 | 876 | |
1da177e4 LT |
877 | chg_vc_kbd_lock(kbd, value); |
878 | } | |
879 | ||
7d12e780 | 880 | static void k_slock(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 | 881 | { |
7d12e780 | 882 | k_shift(vc, value, up_flag); |
1da177e4 LT |
883 | if (up_flag || rep) |
884 | return; | |
e0785572 | 885 | |
1da177e4 LT |
886 | chg_vc_kbd_slock(kbd, value); |
887 | /* try to make Alt, oops, AltGr and such work */ | |
888 | if (!key_maps[kbd->lockstate ^ kbd->slockstate]) { | |
889 | kbd->slockstate = 0; | |
890 | chg_vc_kbd_slock(kbd, value); | |
891 | } | |
892 | } | |
893 | ||
b9ec4e10 | 894 | /* by default, 300ms interval for combination release */ |
77426d72 ST |
895 | static unsigned brl_timeout = 300; |
896 | MODULE_PARM_DESC(brl_timeout, "Braille keys release delay in ms (0 for commit on first key release)"); | |
897 | module_param(brl_timeout, uint, 0644); | |
898 | ||
899 | static unsigned brl_nbchords = 1; | |
900 | MODULE_PARM_DESC(brl_nbchords, "Number of chords that produce a braille pattern (0 for dead chords)"); | |
901 | module_param(brl_nbchords, uint, 0644); | |
902 | ||
7d12e780 | 903 | static void k_brlcommit(struct vc_data *vc, unsigned int pattern, char up_flag) |
77426d72 ST |
904 | { |
905 | static unsigned long chords; | |
906 | static unsigned committed; | |
907 | ||
908 | if (!brl_nbchords) | |
7d12e780 | 909 | k_deadunicode(vc, BRL_UC_ROW | pattern, up_flag); |
77426d72 ST |
910 | else { |
911 | committed |= pattern; | |
912 | chords++; | |
913 | if (chords == brl_nbchords) { | |
7d12e780 | 914 | k_unicode(vc, BRL_UC_ROW | committed, up_flag); |
77426d72 ST |
915 | chords = 0; |
916 | committed = 0; | |
917 | } | |
918 | } | |
919 | } | |
920 | ||
7d12e780 | 921 | static void k_brl(struct vc_data *vc, unsigned char value, char up_flag) |
b9ec4e10 | 922 | { |
e0785572 | 923 | static unsigned pressed, committing; |
b9ec4e10 ST |
924 | static unsigned long releasestart; |
925 | ||
926 | if (kbd->kbdmode != VC_UNICODE) { | |
927 | if (!up_flag) | |
e620e548 | 928 | pr_warn("keyboard mode must be unicode for braille patterns\n"); |
b9ec4e10 ST |
929 | return; |
930 | } | |
931 | ||
932 | if (!value) { | |
7d12e780 | 933 | k_unicode(vc, BRL_UC_ROW, up_flag); |
b9ec4e10 ST |
934 | return; |
935 | } | |
936 | ||
937 | if (value > 8) | |
938 | return; | |
939 | ||
e0785572 | 940 | if (!up_flag) { |
b9ec4e10 ST |
941 | pressed |= 1 << (value - 1); |
942 | if (!brl_timeout) | |
943 | committing = pressed; | |
e0785572 DT |
944 | } else if (brl_timeout) { |
945 | if (!committing || | |
946 | time_after(jiffies, | |
947 | releasestart + msecs_to_jiffies(brl_timeout))) { | |
948 | committing = pressed; | |
949 | releasestart = jiffies; | |
950 | } | |
951 | pressed &= ~(1 << (value - 1)); | |
952 | if (!pressed && committing) { | |
953 | k_brlcommit(vc, committing, 0); | |
954 | committing = 0; | |
955 | } | |
956 | } else { | |
957 | if (committing) { | |
958 | k_brlcommit(vc, committing, 0); | |
959 | committing = 0; | |
960 | } | |
961 | pressed &= ~(1 << (value - 1)); | |
b9ec4e10 ST |
962 | } |
963 | } | |
964 | ||
52355522 ST |
965 | #if IS_ENABLED(CONFIG_INPUT_LEDS) && IS_ENABLED(CONFIG_LEDS_TRIGGERS) |
966 | ||
967 | struct kbd_led_trigger { | |
968 | struct led_trigger trigger; | |
969 | unsigned int mask; | |
970 | }; | |
971 | ||
972 | static void kbd_led_trigger_activate(struct led_classdev *cdev) | |
973 | { | |
974 | struct kbd_led_trigger *trigger = | |
975 | container_of(cdev->trigger, struct kbd_led_trigger, trigger); | |
976 | ||
977 | tasklet_disable(&keyboard_tasklet); | |
eeb64c14 | 978 | if (ledstate != -1U) |
52355522 ST |
979 | led_trigger_event(&trigger->trigger, |
980 | ledstate & trigger->mask ? | |
981 | LED_FULL : LED_OFF); | |
982 | tasklet_enable(&keyboard_tasklet); | |
983 | } | |
984 | ||
985 | #define KBD_LED_TRIGGER(_led_bit, _name) { \ | |
986 | .trigger = { \ | |
987 | .name = _name, \ | |
988 | .activate = kbd_led_trigger_activate, \ | |
989 | }, \ | |
990 | .mask = BIT(_led_bit), \ | |
991 | } | |
992 | ||
eeb64c14 ST |
993 | #define KBD_LOCKSTATE_TRIGGER(_led_bit, _name) \ |
994 | KBD_LED_TRIGGER((_led_bit) + 8, _name) | |
995 | ||
52355522 ST |
996 | static struct kbd_led_trigger kbd_led_triggers[] = { |
997 | KBD_LED_TRIGGER(VC_SCROLLOCK, "kbd-scrollock"), | |
998 | KBD_LED_TRIGGER(VC_NUMLOCK, "kbd-numlock"), | |
999 | KBD_LED_TRIGGER(VC_CAPSLOCK, "kbd-capslock"), | |
1000 | KBD_LED_TRIGGER(VC_KANALOCK, "kbd-kanalock"), | |
eeb64c14 ST |
1001 | |
1002 | KBD_LOCKSTATE_TRIGGER(VC_SHIFTLOCK, "kbd-shiftlock"), | |
1003 | KBD_LOCKSTATE_TRIGGER(VC_ALTGRLOCK, "kbd-altgrlock"), | |
1004 | KBD_LOCKSTATE_TRIGGER(VC_CTRLLOCK, "kbd-ctrllock"), | |
1005 | KBD_LOCKSTATE_TRIGGER(VC_ALTLOCK, "kbd-altlock"), | |
1006 | KBD_LOCKSTATE_TRIGGER(VC_SHIFTLLOCK, "kbd-shiftllock"), | |
1007 | KBD_LOCKSTATE_TRIGGER(VC_SHIFTRLOCK, "kbd-shiftrlock"), | |
1008 | KBD_LOCKSTATE_TRIGGER(VC_CTRLLLOCK, "kbd-ctrlllock"), | |
1009 | KBD_LOCKSTATE_TRIGGER(VC_CTRLRLOCK, "kbd-ctrlrlock"), | |
52355522 ST |
1010 | }; |
1011 | ||
1012 | static void kbd_propagate_led_state(unsigned int old_state, | |
1013 | unsigned int new_state) | |
1014 | { | |
1015 | struct kbd_led_trigger *trigger; | |
1016 | unsigned int changed = old_state ^ new_state; | |
1017 | int i; | |
1018 | ||
1019 | for (i = 0; i < ARRAY_SIZE(kbd_led_triggers); i++) { | |
1020 | trigger = &kbd_led_triggers[i]; | |
1021 | ||
1022 | if (changed & trigger->mask) | |
1023 | led_trigger_event(&trigger->trigger, | |
1024 | new_state & trigger->mask ? | |
1025 | LED_FULL : LED_OFF); | |
1026 | } | |
1027 | } | |
1028 | ||
1029 | static int kbd_update_leds_helper(struct input_handle *handle, void *data) | |
1030 | { | |
1031 | unsigned int led_state = *(unsigned int *)data; | |
1032 | ||
1033 | if (test_bit(EV_LED, handle->dev->evbit)) | |
1034 | kbd_propagate_led_state(~led_state, led_state); | |
1035 | ||
1036 | return 0; | |
1037 | } | |
1038 | ||
1039 | static void kbd_init_leds(void) | |
1040 | { | |
1041 | int error; | |
1042 | int i; | |
1043 | ||
1044 | for (i = 0; i < ARRAY_SIZE(kbd_led_triggers); i++) { | |
1045 | error = led_trigger_register(&kbd_led_triggers[i].trigger); | |
1046 | if (error) | |
1047 | pr_err("error %d while registering trigger %s\n", | |
1048 | error, kbd_led_triggers[i].trigger.name); | |
1049 | } | |
1050 | } | |
1051 | ||
1052 | #else | |
1053 | ||
1054 | static int kbd_update_leds_helper(struct input_handle *handle, void *data) | |
1055 | { | |
1056 | unsigned int leds = *(unsigned int *)data; | |
1057 | ||
1058 | if (test_bit(EV_LED, handle->dev->evbit)) { | |
1059 | input_inject_event(handle, EV_LED, LED_SCROLLL, !!(leds & 0x01)); | |
1060 | input_inject_event(handle, EV_LED, LED_NUML, !!(leds & 0x02)); | |
1061 | input_inject_event(handle, EV_LED, LED_CAPSL, !!(leds & 0x04)); | |
1062 | input_inject_event(handle, EV_SYN, SYN_REPORT, 0); | |
1063 | } | |
1064 | ||
1065 | return 0; | |
1066 | } | |
1067 | ||
1068 | static void kbd_propagate_led_state(unsigned int old_state, | |
1069 | unsigned int new_state) | |
1070 | { | |
1071 | input_handler_for_each_handle(&kbd_handler, &new_state, | |
1072 | kbd_update_leds_helper); | |
1073 | } | |
1074 | ||
1075 | static void kbd_init_leds(void) | |
1076 | { | |
1077 | } | |
1078 | ||
1079 | #endif | |
1080 | ||
1da177e4 LT |
1081 | /* |
1082 | * The leds display either (i) the status of NumLock, CapsLock, ScrollLock, | |
1083 | * or (ii) whatever pattern of lights people want to show using KDSETLED, | |
1084 | * or (iii) specified bits of specified words in kernel memory. | |
1085 | */ | |
3db1ddb7 | 1086 | static unsigned char getledstate(void) |
1da177e4 | 1087 | { |
eeb64c14 | 1088 | return ledstate & 0xff; |
1da177e4 LT |
1089 | } |
1090 | ||
9d329c1c | 1091 | void setledstate(struct kbd_struct *kb, unsigned int led) |
1da177e4 | 1092 | { |
079c9534 | 1093 | unsigned long flags; |
3db1ddb7 | 1094 | spin_lock_irqsave(&led_lock, flags); |
1da177e4 LT |
1095 | if (!(led & ~7)) { |
1096 | ledioctl = led; | |
9d329c1c | 1097 | kb->ledmode = LED_SHOW_IOCTL; |
1da177e4 | 1098 | } else |
9d329c1c | 1099 | kb->ledmode = LED_SHOW_FLAGS; |
e0785572 | 1100 | |
1da177e4 | 1101 | set_leds(); |
3db1ddb7 | 1102 | spin_unlock_irqrestore(&led_lock, flags); |
1da177e4 LT |
1103 | } |
1104 | ||
1105 | static inline unsigned char getleds(void) | |
1106 | { | |
9d329c1c | 1107 | struct kbd_struct *kb = kbd_table + fg_console; |
1da177e4 | 1108 | |
9d329c1c | 1109 | if (kb->ledmode == LED_SHOW_IOCTL) |
1da177e4 LT |
1110 | return ledioctl; |
1111 | ||
9d329c1c | 1112 | return kb->ledflagstate; |
1da177e4 LT |
1113 | } |
1114 | ||
079c9534 AC |
1115 | /** |
1116 | * vt_get_leds - helper for braille console | |
1117 | * @console: console to read | |
1118 | * @flag: flag we want to check | |
1119 | * | |
1120 | * Check the status of a keyboard led flag and report it back | |
1121 | */ | |
1122 | int vt_get_leds(int console, int flag) | |
1123 | { | |
9d329c1c | 1124 | struct kbd_struct *kb = kbd_table + console; |
079c9534 | 1125 | int ret; |
3db1ddb7 | 1126 | unsigned long flags; |
079c9534 | 1127 | |
3db1ddb7 | 1128 | spin_lock_irqsave(&led_lock, flags); |
9d329c1c | 1129 | ret = vc_kbd_led(kb, flag); |
3db1ddb7 | 1130 | spin_unlock_irqrestore(&led_lock, flags); |
079c9534 AC |
1131 | |
1132 | return ret; | |
1133 | } | |
1134 | EXPORT_SYMBOL_GPL(vt_get_leds); | |
1135 | ||
1136 | /** | |
1137 | * vt_set_led_state - set LED state of a console | |
1138 | * @console: console to set | |
1139 | * @leds: LED bits | |
1140 | * | |
1141 | * Set the LEDs on a console. This is a wrapper for the VT layer | |
1142 | * so that we can keep kbd knowledge internal | |
1143 | */ | |
1144 | void vt_set_led_state(int console, int leds) | |
1145 | { | |
9d329c1c MR |
1146 | struct kbd_struct *kb = kbd_table + console; |
1147 | setledstate(kb, leds); | |
079c9534 AC |
1148 | } |
1149 | ||
1150 | /** | |
1151 | * vt_kbd_con_start - Keyboard side of console start | |
1152 | * @console: console | |
1153 | * | |
1154 | * Handle console start. This is a wrapper for the VT layer | |
1155 | * so that we can keep kbd knowledge internal | |
84f904ec AC |
1156 | * |
1157 | * FIXME: We eventually need to hold the kbd lock here to protect | |
1158 | * the LED updating. We can't do it yet because fn_hold calls stop_tty | |
1159 | * and start_tty under the kbd_event_lock, while normal tty paths | |
1160 | * don't hold the lock. We probably need to split out an LED lock | |
1161 | * but not during an -rc release! | |
079c9534 AC |
1162 | */ |
1163 | void vt_kbd_con_start(int console) | |
1164 | { | |
9d329c1c | 1165 | struct kbd_struct *kb = kbd_table + console; |
3db1ddb7 AC |
1166 | unsigned long flags; |
1167 | spin_lock_irqsave(&led_lock, flags); | |
9d329c1c | 1168 | clr_vc_kbd_led(kb, VC_SCROLLOCK); |
079c9534 | 1169 | set_leds(); |
3db1ddb7 | 1170 | spin_unlock_irqrestore(&led_lock, flags); |
079c9534 AC |
1171 | } |
1172 | ||
1173 | /** | |
1174 | * vt_kbd_con_stop - Keyboard side of console stop | |
1175 | * @console: console | |
1176 | * | |
1177 | * Handle console stop. This is a wrapper for the VT layer | |
1178 | * so that we can keep kbd knowledge internal | |
1179 | */ | |
1180 | void vt_kbd_con_stop(int console) | |
1181 | { | |
9d329c1c | 1182 | struct kbd_struct *kb = kbd_table + console; |
3db1ddb7 AC |
1183 | unsigned long flags; |
1184 | spin_lock_irqsave(&led_lock, flags); | |
9d329c1c | 1185 | set_vc_kbd_led(kb, VC_SCROLLOCK); |
079c9534 | 1186 | set_leds(); |
3db1ddb7 | 1187 | spin_unlock_irqrestore(&led_lock, flags); |
079c9534 AC |
1188 | } |
1189 | ||
1da177e4 | 1190 | /* |
52355522 ST |
1191 | * This is the tasklet that updates LED state of LEDs using standard |
1192 | * keyboard triggers. The reason we use tasklet is that we need to | |
1193 | * handle the scenario when keyboard handler is not registered yet | |
1194 | * but we already getting updates from the VT to update led state. | |
1da177e4 | 1195 | */ |
1da177e4 LT |
1196 | static void kbd_bh(unsigned long dummy) |
1197 | { | |
eeb64c14 | 1198 | unsigned int leds; |
3db1ddb7 | 1199 | unsigned long flags; |
52355522 | 1200 | |
3db1ddb7 AC |
1201 | spin_lock_irqsave(&led_lock, flags); |
1202 | leds = getleds(); | |
eeb64c14 | 1203 | leds |= (unsigned int)kbd->lockstate << 8; |
3db1ddb7 | 1204 | spin_unlock_irqrestore(&led_lock, flags); |
1da177e4 LT |
1205 | |
1206 | if (leds != ledstate) { | |
52355522 | 1207 | kbd_propagate_led_state(ledstate, leds); |
66d2a595 | 1208 | ledstate = leds; |
1da177e4 | 1209 | } |
1da177e4 LT |
1210 | } |
1211 | ||
1212 | DECLARE_TASKLET_DISABLED(keyboard_tasklet, kbd_bh, 0); | |
1213 | ||
1da177e4 | 1214 | #if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_ALPHA) ||\ |
0b57ee9e AB |
1215 | defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_SPARC) ||\ |
1216 | defined(CONFIG_PARISC) || defined(CONFIG_SUPERH) ||\ | |
3a4e832c HCE |
1217 | (defined(CONFIG_ARM) && defined(CONFIG_KEYBOARD_ATKBD) && !defined(CONFIG_ARCH_RPC)) ||\ |
1218 | defined(CONFIG_AVR32) | |
1da177e4 LT |
1219 | |
1220 | #define HW_RAW(dev) (test_bit(EV_MSC, dev->evbit) && test_bit(MSC_RAW, dev->mscbit) &&\ | |
1221 | ((dev)->id.bustype == BUS_I8042) && ((dev)->id.vendor == 0x0001) && ((dev)->id.product == 0x0001)) | |
1222 | ||
0f5e560e | 1223 | static const unsigned short x86_keycodes[256] = |
1da177e4 LT |
1224 | { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
1225 | 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, | |
1226 | 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, | |
1227 | 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, | |
1228 | 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, | |
1229 | 80, 81, 82, 83, 84,118, 86, 87, 88,115,120,119,121,112,123, 92, | |
896cdc7b | 1230 | 284,285,309, 0,312, 91,327,328,329,331,333,335,336,337,338,339, |
1da177e4 LT |
1231 | 367,288,302,304,350, 89,334,326,267,126,268,269,125,347,348,349, |
1232 | 360,261,262,263,268,376,100,101,321,316,373,286,289,102,351,355, | |
72a42f24 HG |
1233 | 103,104,105,275,287,279,258,106,274,107,294,364,358,363,362,361, |
1234 | 291,108,381,281,290,272,292,305,280, 99,112,257,306,359,113,114, | |
1da177e4 LT |
1235 | 264,117,271,374,379,265,266, 93, 94, 95, 85,259,375,260, 90,116, |
1236 | 377,109,111,277,278,282,283,295,296,297,299,300,301,293,303,307, | |
1237 | 308,310,313,314,315,317,318,319,320,357,322,323,324,325,276,330, | |
1238 | 332,340,365,342,343,344,345,346,356,270,341,368,369,370,371,372 }; | |
1239 | ||
0b57ee9e | 1240 | #ifdef CONFIG_SPARC |
e0785572 | 1241 | static int sparc_l1_a_state; |
1da177e4 LT |
1242 | extern void sun_do_break(void); |
1243 | #endif | |
1244 | ||
fe1e8604 | 1245 | static int emulate_raw(struct vc_data *vc, unsigned int keycode, |
1da177e4 LT |
1246 | unsigned char up_flag) |
1247 | { | |
896cdc7b | 1248 | int code; |
1da177e4 LT |
1249 | |
1250 | switch (keycode) { | |
896cdc7b | 1251 | |
e0785572 DT |
1252 | case KEY_PAUSE: |
1253 | put_queue(vc, 0xe1); | |
1254 | put_queue(vc, 0x1d | up_flag); | |
1255 | put_queue(vc, 0x45 | up_flag); | |
1256 | break; | |
896cdc7b | 1257 | |
e0785572 DT |
1258 | case KEY_HANGEUL: |
1259 | if (!up_flag) | |
1260 | put_queue(vc, 0xf2); | |
1261 | break; | |
1da177e4 | 1262 | |
e0785572 DT |
1263 | case KEY_HANJA: |
1264 | if (!up_flag) | |
1265 | put_queue(vc, 0xf1); | |
1266 | break; | |
896cdc7b | 1267 | |
e0785572 DT |
1268 | case KEY_SYSRQ: |
1269 | /* | |
1270 | * Real AT keyboards (that's what we're trying | |
1271 | * to emulate here emit 0xe0 0x2a 0xe0 0x37 when | |
1272 | * pressing PrtSc/SysRq alone, but simply 0x54 | |
1273 | * when pressing Alt+PrtSc/SysRq. | |
1274 | */ | |
1275 | if (test_bit(KEY_LEFTALT, key_down) || | |
1276 | test_bit(KEY_RIGHTALT, key_down)) { | |
1277 | put_queue(vc, 0x54 | up_flag); | |
1278 | } else { | |
1279 | put_queue(vc, 0xe0); | |
1280 | put_queue(vc, 0x2a | up_flag); | |
1281 | put_queue(vc, 0xe0); | |
1282 | put_queue(vc, 0x37 | up_flag); | |
1283 | } | |
1284 | break; | |
1da177e4 | 1285 | |
e0785572 DT |
1286 | default: |
1287 | if (keycode > 255) | |
1288 | return -1; | |
1da177e4 | 1289 | |
e0785572 DT |
1290 | code = x86_keycodes[keycode]; |
1291 | if (!code) | |
1292 | return -1; | |
1da177e4 | 1293 | |
e0785572 DT |
1294 | if (code & 0x100) |
1295 | put_queue(vc, 0xe0); | |
1296 | put_queue(vc, (code & 0x7f) | up_flag); | |
1297 | ||
1298 | break; | |
1da177e4 LT |
1299 | } |
1300 | ||
1301 | return 0; | |
1302 | } | |
1303 | ||
1304 | #else | |
1305 | ||
1306 | #define HW_RAW(dev) 0 | |
1307 | ||
1da177e4 LT |
1308 | static int emulate_raw(struct vc_data *vc, unsigned int keycode, unsigned char up_flag) |
1309 | { | |
1310 | if (keycode > 127) | |
1311 | return -1; | |
1312 | ||
1313 | put_queue(vc, keycode | up_flag); | |
1314 | return 0; | |
1315 | } | |
1316 | #endif | |
1317 | ||
1318 | static void kbd_rawcode(unsigned char data) | |
1319 | { | |
1320 | struct vc_data *vc = vc_cons[fg_console].d; | |
e0785572 | 1321 | |
0c09b2ac | 1322 | kbd = kbd_table + vc->vc_num; |
1da177e4 LT |
1323 | if (kbd->kbdmode == VC_RAW) |
1324 | put_queue(vc, data); | |
1325 | } | |
1326 | ||
7d12e780 | 1327 | static void kbd_keycode(unsigned int keycode, int down, int hw_raw) |
1da177e4 LT |
1328 | { |
1329 | struct vc_data *vc = vc_cons[fg_console].d; | |
1330 | unsigned short keysym, *key_map; | |
e0785572 DT |
1331 | unsigned char type; |
1332 | bool raw_mode; | |
1da177e4 LT |
1333 | struct tty_struct *tty; |
1334 | int shift_final; | |
41ab4396 | 1335 | struct keyboard_notifier_param param = { .vc = vc, .value = keycode, .down = down }; |
e0785572 | 1336 | int rc; |
1da177e4 | 1337 | |
8ce73264 | 1338 | tty = vc->port.tty; |
1da177e4 LT |
1339 | |
1340 | if (tty && (!tty->driver_data)) { | |
1341 | /* No driver data? Strange. Okay we fix it then. */ | |
1342 | tty->driver_data = vc; | |
1343 | } | |
1344 | ||
0c09b2ac | 1345 | kbd = kbd_table + vc->vc_num; |
1da177e4 | 1346 | |
0b57ee9e | 1347 | #ifdef CONFIG_SPARC |
1da177e4 LT |
1348 | if (keycode == KEY_STOP) |
1349 | sparc_l1_a_state = down; | |
1350 | #endif | |
1351 | ||
1352 | rep = (down == 2); | |
1353 | ||
e0785572 DT |
1354 | raw_mode = (kbd->kbdmode == VC_RAW); |
1355 | if (raw_mode && !hw_raw) | |
1da177e4 | 1356 | if (emulate_raw(vc, keycode, !down << 7)) |
9e35d206 | 1357 | if (keycode < BTN_MISC && printk_ratelimit()) |
e620e548 JP |
1358 | pr_warn("can't emulate rawmode for keycode %d\n", |
1359 | keycode); | |
1da177e4 | 1360 | |
0b57ee9e | 1361 | #ifdef CONFIG_SPARC |
1da177e4 | 1362 | if (keycode == KEY_A && sparc_l1_a_state) { |
e0785572 | 1363 | sparc_l1_a_state = false; |
1da177e4 LT |
1364 | sun_do_break(); |
1365 | } | |
1366 | #endif | |
1367 | ||
1368 | if (kbd->kbdmode == VC_MEDIUMRAW) { | |
1369 | /* | |
1370 | * This is extended medium raw mode, with keys above 127 | |
1371 | * encoded as 0, high 7 bits, low 7 bits, with the 0 bearing | |
1372 | * the 'up' flag if needed. 0 is reserved, so this shouldn't | |
1373 | * interfere with anything else. The two bytes after 0 will | |
1374 | * always have the up flag set not to interfere with older | |
1375 | * applications. This allows for 16384 different keycodes, | |
1376 | * which should be enough. | |
1377 | */ | |
1378 | if (keycode < 128) { | |
1379 | put_queue(vc, keycode | (!down << 7)); | |
1380 | } else { | |
1381 | put_queue(vc, !down << 7); | |
1382 | put_queue(vc, (keycode >> 7) | 0x80); | |
1383 | put_queue(vc, keycode | 0x80); | |
1384 | } | |
e0785572 | 1385 | raw_mode = true; |
1da177e4 LT |
1386 | } |
1387 | ||
1388 | if (down) | |
1389 | set_bit(keycode, key_down); | |
1390 | else | |
1391 | clear_bit(keycode, key_down); | |
1392 | ||
fe1e8604 DT |
1393 | if (rep && |
1394 | (!vc_kbd_mode(kbd, VC_REPEAT) || | |
f34d7a5b | 1395 | (tty && !L_ECHO(tty) && tty_chars_in_buffer(tty)))) { |
1da177e4 LT |
1396 | /* |
1397 | * Don't repeat a key if the input buffers are not empty and the | |
fe1e8604 | 1398 | * characters get aren't echoed locally. This makes key repeat |
1da177e4 LT |
1399 | * usable with slow applications and under heavy loads. |
1400 | */ | |
1401 | return; | |
1402 | } | |
1403 | ||
41ab4396 | 1404 | param.shift = shift_final = (shift_state | kbd->slockstate) ^ kbd->lockstate; |
0beb4f6f | 1405 | param.ledstate = kbd->ledflagstate; |
1da177e4 LT |
1406 | key_map = key_maps[shift_final]; |
1407 | ||
e0785572 DT |
1408 | rc = atomic_notifier_call_chain(&keyboard_notifier_list, |
1409 | KBD_KEYCODE, ¶m); | |
1410 | if (rc == NOTIFY_STOP || !key_map) { | |
1411 | atomic_notifier_call_chain(&keyboard_notifier_list, | |
1412 | KBD_UNBOUND_KEYCODE, ¶m); | |
079c9534 | 1413 | do_compute_shiftstate(); |
1da177e4 LT |
1414 | kbd->slockstate = 0; |
1415 | return; | |
1416 | } | |
1417 | ||
e0785572 | 1418 | if (keycode < NR_KEYS) |
b9ec4e10 | 1419 | keysym = key_map[keycode]; |
e0785572 DT |
1420 | else if (keycode >= KEY_BRL_DOT1 && keycode <= KEY_BRL_DOT8) |
1421 | keysym = U(K(KT_BRL, keycode - KEY_BRL_DOT1 + 1)); | |
1422 | else | |
1423 | return; | |
1da177e4 | 1424 | |
1da177e4 LT |
1425 | type = KTYP(keysym); |
1426 | ||
1427 | if (type < 0xf0) { | |
41ab4396 | 1428 | param.value = keysym; |
e0785572 DT |
1429 | rc = atomic_notifier_call_chain(&keyboard_notifier_list, |
1430 | KBD_UNICODE, ¶m); | |
1431 | if (rc != NOTIFY_STOP) | |
1432 | if (down && !raw_mode) | |
1433 | to_utf8(vc, keysym); | |
1da177e4 LT |
1434 | return; |
1435 | } | |
1436 | ||
1437 | type -= 0xf0; | |
1438 | ||
1da177e4 LT |
1439 | if (type == KT_LETTER) { |
1440 | type = KT_LATIN; | |
1441 | if (vc_kbd_led(kbd, VC_CAPSLOCK)) { | |
1442 | key_map = key_maps[shift_final ^ (1 << KG_SHIFT)]; | |
1443 | if (key_map) | |
1444 | keysym = key_map[keycode]; | |
1445 | } | |
1446 | } | |
41ab4396 | 1447 | |
e0785572 DT |
1448 | param.value = keysym; |
1449 | rc = atomic_notifier_call_chain(&keyboard_notifier_list, | |
1450 | KBD_KEYSYM, ¶m); | |
1451 | if (rc == NOTIFY_STOP) | |
41ab4396 ST |
1452 | return; |
1453 | ||
9fc3de9c | 1454 | if ((raw_mode || kbd->kbdmode == VC_OFF) && type != KT_SPEC && type != KT_SHIFT) |
41ab4396 | 1455 | return; |
1da177e4 | 1456 | |
7d12e780 | 1457 | (*k_handler[type])(vc, keysym & 0xff, !down); |
1da177e4 | 1458 | |
0beb4f6f | 1459 | param.ledstate = kbd->ledflagstate; |
41ab4396 ST |
1460 | atomic_notifier_call_chain(&keyboard_notifier_list, KBD_POST_KEYSYM, ¶m); |
1461 | ||
1da177e4 LT |
1462 | if (type != KT_SLOCK) |
1463 | kbd->slockstate = 0; | |
1464 | } | |
1465 | ||
fe1e8604 | 1466 | static void kbd_event(struct input_handle *handle, unsigned int event_type, |
1da177e4 LT |
1467 | unsigned int event_code, int value) |
1468 | { | |
21cea58e DT |
1469 | /* We are called with interrupts disabled, just take the lock */ |
1470 | spin_lock(&kbd_event_lock); | |
1471 | ||
1da177e4 LT |
1472 | if (event_type == EV_MSC && event_code == MSC_RAW && HW_RAW(handle->dev)) |
1473 | kbd_rawcode(value); | |
1474 | if (event_type == EV_KEY) | |
7d12e780 | 1475 | kbd_keycode(event_code, value, HW_RAW(handle->dev)); |
21cea58e DT |
1476 | |
1477 | spin_unlock(&kbd_event_lock); | |
1478 | ||
1da177e4 LT |
1479 | tasklet_schedule(&keyboard_tasklet); |
1480 | do_poke_blanked_console = 1; | |
1481 | schedule_console_callback(); | |
1482 | } | |
1483 | ||
0b7024ac DT |
1484 | static bool kbd_match(struct input_handler *handler, struct input_dev *dev) |
1485 | { | |
1486 | int i; | |
1487 | ||
1488 | if (test_bit(EV_SND, dev->evbit)) | |
1489 | return true; | |
1490 | ||
53c1f764 | 1491 | if (test_bit(EV_KEY, dev->evbit)) { |
0b7024ac DT |
1492 | for (i = KEY_RESERVED; i < BTN_MISC; i++) |
1493 | if (test_bit(i, dev->keybit)) | |
1494 | return true; | |
53c1f764 ST |
1495 | for (i = KEY_BRL_DOT1; i <= KEY_BRL_DOT10; i++) |
1496 | if (test_bit(i, dev->keybit)) | |
1497 | return true; | |
1498 | } | |
0b7024ac DT |
1499 | |
1500 | return false; | |
1501 | } | |
1502 | ||
1da177e4 LT |
1503 | /* |
1504 | * When a keyboard (or other input device) is found, the kbd_connect | |
1505 | * function is called. The function then looks at the device, and if it | |
1506 | * likes it, it can open it and get events from it. In this (kbd_connect) | |
1507 | * function, we should decide which VT to bind that keyboard to initially. | |
1508 | */ | |
5b2a0826 DT |
1509 | static int kbd_connect(struct input_handler *handler, struct input_dev *dev, |
1510 | const struct input_device_id *id) | |
1da177e4 LT |
1511 | { |
1512 | struct input_handle *handle; | |
5b2a0826 | 1513 | int error; |
1da177e4 | 1514 | |
22479e1c DT |
1515 | handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL); |
1516 | if (!handle) | |
5b2a0826 | 1517 | return -ENOMEM; |
1da177e4 LT |
1518 | |
1519 | handle->dev = dev; | |
1520 | handle->handler = handler; | |
fe1e8604 | 1521 | handle->name = "kbd"; |
1da177e4 | 1522 | |
5b2a0826 DT |
1523 | error = input_register_handle(handle); |
1524 | if (error) | |
1525 | goto err_free_handle; | |
1da177e4 | 1526 | |
5b2a0826 DT |
1527 | error = input_open_device(handle); |
1528 | if (error) | |
1529 | goto err_unregister_handle; | |
1530 | ||
1531 | return 0; | |
1532 | ||
1533 | err_unregister_handle: | |
1534 | input_unregister_handle(handle); | |
1535 | err_free_handle: | |
1536 | kfree(handle); | |
1537 | return error; | |
1da177e4 LT |
1538 | } |
1539 | ||
1540 | static void kbd_disconnect(struct input_handle *handle) | |
1541 | { | |
1542 | input_close_device(handle); | |
5b2a0826 | 1543 | input_unregister_handle(handle); |
1da177e4 LT |
1544 | kfree(handle); |
1545 | } | |
1546 | ||
c7e8dc6e DT |
1547 | /* |
1548 | * Start keyboard handler on the new keyboard by refreshing LED state to | |
1549 | * match the rest of the system. | |
1550 | */ | |
1551 | static void kbd_start(struct input_handle *handle) | |
1552 | { | |
c7e8dc6e | 1553 | tasklet_disable(&keyboard_tasklet); |
66d2a595 | 1554 | |
eeb64c14 ST |
1555 | if (ledstate != -1U) |
1556 | kbd_update_leds_helper(handle, &ledstate); | |
66d2a595 | 1557 | |
c7e8dc6e DT |
1558 | tasklet_enable(&keyboard_tasklet); |
1559 | } | |
1560 | ||
66e66118 | 1561 | static const struct input_device_id kbd_ids[] = { |
1da177e4 | 1562 | { |
6aeed479 AC |
1563 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT, |
1564 | .evbit = { BIT_MASK(EV_KEY) }, | |
1565 | }, | |
fe1e8604 | 1566 | |
1da177e4 | 1567 | { |
6aeed479 AC |
1568 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT, |
1569 | .evbit = { BIT_MASK(EV_SND) }, | |
1570 | }, | |
1da177e4 LT |
1571 | |
1572 | { }, /* Terminating entry */ | |
1573 | }; | |
1574 | ||
1575 | MODULE_DEVICE_TABLE(input, kbd_ids); | |
1576 | ||
1577 | static struct input_handler kbd_handler = { | |
1578 | .event = kbd_event, | |
0b7024ac | 1579 | .match = kbd_match, |
1da177e4 LT |
1580 | .connect = kbd_connect, |
1581 | .disconnect = kbd_disconnect, | |
c7e8dc6e | 1582 | .start = kbd_start, |
1da177e4 LT |
1583 | .name = "kbd", |
1584 | .id_table = kbd_ids, | |
1585 | }; | |
1586 | ||
1587 | int __init kbd_init(void) | |
1588 | { | |
1589 | int i; | |
4263cf0f | 1590 | int error; |
1da177e4 | 1591 | |
6aeed479 | 1592 | for (i = 0; i < MAX_NR_CONSOLES; i++) { |
b2d0b7a0 JC |
1593 | kbd_table[i].ledflagstate = kbd_defleds(); |
1594 | kbd_table[i].default_ledflagstate = kbd_defleds(); | |
2b192908 DT |
1595 | kbd_table[i].ledmode = LED_SHOW_FLAGS; |
1596 | kbd_table[i].lockstate = KBD_DEFLOCK; | |
1597 | kbd_table[i].slockstate = 0; | |
1598 | kbd_table[i].modeflags = KBD_DEFMODE; | |
2e8ecb9d | 1599 | kbd_table[i].kbdmode = default_utf8 ? VC_UNICODE : VC_XLATE; |
2b192908 | 1600 | } |
1da177e4 | 1601 | |
52355522 ST |
1602 | kbd_init_leds(); |
1603 | ||
4263cf0f DT |
1604 | error = input_register_handler(&kbd_handler); |
1605 | if (error) | |
1606 | return error; | |
1da177e4 LT |
1607 | |
1608 | tasklet_enable(&keyboard_tasklet); | |
1609 | tasklet_schedule(&keyboard_tasklet); | |
1610 | ||
1611 | return 0; | |
1612 | } | |
247ff8e6 AC |
1613 | |
1614 | /* Ioctl support code */ | |
1615 | ||
1616 | /** | |
1617 | * vt_do_diacrit - diacritical table updates | |
1618 | * @cmd: ioctl request | |
9d329c1c | 1619 | * @udp: pointer to user data for ioctl |
247ff8e6 AC |
1620 | * @perm: permissions check computed by caller |
1621 | * | |
1622 | * Update the diacritical tables atomically and safely. Lock them | |
1623 | * against simultaneous keypresses | |
1624 | */ | |
9d329c1c | 1625 | int vt_do_diacrit(unsigned int cmd, void __user *udp, int perm) |
247ff8e6 | 1626 | { |
247ff8e6 AC |
1627 | unsigned long flags; |
1628 | int asize; | |
1629 | int ret = 0; | |
1630 | ||
1631 | switch (cmd) { | |
1632 | case KDGKBDIACR: | |
1633 | { | |
9d329c1c MR |
1634 | struct kbdiacrs __user *a = udp; |
1635 | struct kbdiacr *dia; | |
247ff8e6 AC |
1636 | int i; |
1637 | ||
9d329c1c | 1638 | dia = kmalloc(MAX_DIACR * sizeof(struct kbdiacr), |
247ff8e6 | 1639 | GFP_KERNEL); |
9d329c1c | 1640 | if (!dia) |
247ff8e6 AC |
1641 | return -ENOMEM; |
1642 | ||
1643 | /* Lock the diacriticals table, make a copy and then | |
1644 | copy it after we unlock */ | |
1645 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1646 | ||
1647 | asize = accent_table_size; | |
1648 | for (i = 0; i < asize; i++) { | |
9d329c1c | 1649 | dia[i].diacr = conv_uni_to_8bit( |
247ff8e6 | 1650 | accent_table[i].diacr); |
9d329c1c | 1651 | dia[i].base = conv_uni_to_8bit( |
247ff8e6 | 1652 | accent_table[i].base); |
9d329c1c | 1653 | dia[i].result = conv_uni_to_8bit( |
247ff8e6 AC |
1654 | accent_table[i].result); |
1655 | } | |
1656 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1657 | ||
1658 | if (put_user(asize, &a->kb_cnt)) | |
1659 | ret = -EFAULT; | |
9d329c1c | 1660 | else if (copy_to_user(a->kbdiacr, dia, |
247ff8e6 AC |
1661 | asize * sizeof(struct kbdiacr))) |
1662 | ret = -EFAULT; | |
9d329c1c | 1663 | kfree(dia); |
247ff8e6 AC |
1664 | return ret; |
1665 | } | |
1666 | case KDGKBDIACRUC: | |
1667 | { | |
9d329c1c | 1668 | struct kbdiacrsuc __user *a = udp; |
247ff8e6 AC |
1669 | void *buf; |
1670 | ||
1671 | buf = kmalloc(MAX_DIACR * sizeof(struct kbdiacruc), | |
1672 | GFP_KERNEL); | |
1673 | if (buf == NULL) | |
1674 | return -ENOMEM; | |
1675 | ||
1676 | /* Lock the diacriticals table, make a copy and then | |
1677 | copy it after we unlock */ | |
1678 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1679 | ||
1680 | asize = accent_table_size; | |
1681 | memcpy(buf, accent_table, asize * sizeof(struct kbdiacruc)); | |
1682 | ||
1683 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1684 | ||
1685 | if (put_user(asize, &a->kb_cnt)) | |
1686 | ret = -EFAULT; | |
1687 | else if (copy_to_user(a->kbdiacruc, buf, | |
1688 | asize*sizeof(struct kbdiacruc))) | |
1689 | ret = -EFAULT; | |
1690 | kfree(buf); | |
1691 | return ret; | |
1692 | } | |
1693 | ||
1694 | case KDSKBDIACR: | |
1695 | { | |
9d329c1c MR |
1696 | struct kbdiacrs __user *a = udp; |
1697 | struct kbdiacr *dia = NULL; | |
247ff8e6 AC |
1698 | unsigned int ct; |
1699 | int i; | |
1700 | ||
1701 | if (!perm) | |
1702 | return -EPERM; | |
1703 | if (get_user(ct, &a->kb_cnt)) | |
1704 | return -EFAULT; | |
1705 | if (ct >= MAX_DIACR) | |
1706 | return -EINVAL; | |
1707 | ||
1708 | if (ct) { | |
9d329c1c | 1709 | dia = kmalloc(sizeof(struct kbdiacr) * ct, |
247ff8e6 | 1710 | GFP_KERNEL); |
9d329c1c | 1711 | if (!dia) |
247ff8e6 AC |
1712 | return -ENOMEM; |
1713 | ||
9d329c1c | 1714 | if (copy_from_user(dia, a->kbdiacr, |
247ff8e6 | 1715 | sizeof(struct kbdiacr) * ct)) { |
9d329c1c | 1716 | kfree(dia); |
247ff8e6 AC |
1717 | return -EFAULT; |
1718 | } | |
1719 | } | |
1720 | ||
1721 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1722 | accent_table_size = ct; | |
1723 | for (i = 0; i < ct; i++) { | |
1724 | accent_table[i].diacr = | |
9d329c1c | 1725 | conv_8bit_to_uni(dia[i].diacr); |
247ff8e6 | 1726 | accent_table[i].base = |
9d329c1c | 1727 | conv_8bit_to_uni(dia[i].base); |
247ff8e6 | 1728 | accent_table[i].result = |
9d329c1c | 1729 | conv_8bit_to_uni(dia[i].result); |
247ff8e6 AC |
1730 | } |
1731 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
9d329c1c | 1732 | kfree(dia); |
247ff8e6 AC |
1733 | return 0; |
1734 | } | |
1735 | ||
1736 | case KDSKBDIACRUC: | |
1737 | { | |
9d329c1c | 1738 | struct kbdiacrsuc __user *a = udp; |
247ff8e6 AC |
1739 | unsigned int ct; |
1740 | void *buf = NULL; | |
1741 | ||
1742 | if (!perm) | |
1743 | return -EPERM; | |
1744 | ||
1745 | if (get_user(ct, &a->kb_cnt)) | |
1746 | return -EFAULT; | |
1747 | ||
1748 | if (ct >= MAX_DIACR) | |
1749 | return -EINVAL; | |
1750 | ||
1751 | if (ct) { | |
1752 | buf = kmalloc(ct * sizeof(struct kbdiacruc), | |
1753 | GFP_KERNEL); | |
1754 | if (buf == NULL) | |
1755 | return -ENOMEM; | |
1756 | ||
1757 | if (copy_from_user(buf, a->kbdiacruc, | |
1758 | ct * sizeof(struct kbdiacruc))) { | |
1759 | kfree(buf); | |
1760 | return -EFAULT; | |
1761 | } | |
1762 | } | |
1763 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1764 | if (ct) | |
1765 | memcpy(accent_table, buf, | |
1766 | ct * sizeof(struct kbdiacruc)); | |
1767 | accent_table_size = ct; | |
1768 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1769 | kfree(buf); | |
1770 | return 0; | |
1771 | } | |
1772 | } | |
1773 | return ret; | |
1774 | } | |
079c9534 AC |
1775 | |
1776 | /** | |
1777 | * vt_do_kdskbmode - set keyboard mode ioctl | |
1778 | * @console: the console to use | |
1779 | * @arg: the requested mode | |
1780 | * | |
1781 | * Update the keyboard mode bits while holding the correct locks. | |
1782 | * Return 0 for success or an error code. | |
1783 | */ | |
1784 | int vt_do_kdskbmode(int console, unsigned int arg) | |
1785 | { | |
9d329c1c | 1786 | struct kbd_struct *kb = kbd_table + console; |
079c9534 AC |
1787 | int ret = 0; |
1788 | unsigned long flags; | |
1789 | ||
1790 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1791 | switch(arg) { | |
1792 | case K_RAW: | |
9d329c1c | 1793 | kb->kbdmode = VC_RAW; |
079c9534 AC |
1794 | break; |
1795 | case K_MEDIUMRAW: | |
9d329c1c | 1796 | kb->kbdmode = VC_MEDIUMRAW; |
079c9534 AC |
1797 | break; |
1798 | case K_XLATE: | |
9d329c1c | 1799 | kb->kbdmode = VC_XLATE; |
079c9534 AC |
1800 | do_compute_shiftstate(); |
1801 | break; | |
1802 | case K_UNICODE: | |
9d329c1c | 1803 | kb->kbdmode = VC_UNICODE; |
079c9534 AC |
1804 | do_compute_shiftstate(); |
1805 | break; | |
1806 | case K_OFF: | |
9d329c1c | 1807 | kb->kbdmode = VC_OFF; |
079c9534 AC |
1808 | break; |
1809 | default: | |
1810 | ret = -EINVAL; | |
1811 | } | |
1812 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1813 | return ret; | |
1814 | } | |
1815 | ||
1816 | /** | |
1817 | * vt_do_kdskbmeta - set keyboard meta state | |
1818 | * @console: the console to use | |
1819 | * @arg: the requested meta state | |
1820 | * | |
1821 | * Update the keyboard meta bits while holding the correct locks. | |
1822 | * Return 0 for success or an error code. | |
1823 | */ | |
1824 | int vt_do_kdskbmeta(int console, unsigned int arg) | |
1825 | { | |
9d329c1c | 1826 | struct kbd_struct *kb = kbd_table + console; |
079c9534 AC |
1827 | int ret = 0; |
1828 | unsigned long flags; | |
1829 | ||
1830 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1831 | switch(arg) { | |
1832 | case K_METABIT: | |
9d329c1c | 1833 | clr_vc_kbd_mode(kb, VC_META); |
079c9534 AC |
1834 | break; |
1835 | case K_ESCPREFIX: | |
9d329c1c | 1836 | set_vc_kbd_mode(kb, VC_META); |
079c9534 AC |
1837 | break; |
1838 | default: | |
1839 | ret = -EINVAL; | |
1840 | } | |
1841 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1842 | return ret; | |
1843 | } | |
1844 | ||
1845 | int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc, | |
1846 | int perm) | |
1847 | { | |
1848 | struct kbkeycode tmp; | |
1849 | int kc = 0; | |
1850 | ||
1851 | if (copy_from_user(&tmp, user_kbkc, sizeof(struct kbkeycode))) | |
1852 | return -EFAULT; | |
1853 | switch (cmd) { | |
1854 | case KDGETKEYCODE: | |
1855 | kc = getkeycode(tmp.scancode); | |
1856 | if (kc >= 0) | |
1857 | kc = put_user(kc, &user_kbkc->keycode); | |
1858 | break; | |
1859 | case KDSETKEYCODE: | |
1860 | if (!perm) | |
1861 | return -EPERM; | |
1862 | kc = setkeycode(tmp.scancode, tmp.keycode); | |
1863 | break; | |
1864 | } | |
1865 | return kc; | |
1866 | } | |
1867 | ||
1868 | #define i (tmp.kb_index) | |
1869 | #define s (tmp.kb_table) | |
1870 | #define v (tmp.kb_value) | |
1871 | ||
1872 | int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm, | |
1873 | int console) | |
1874 | { | |
9d329c1c | 1875 | struct kbd_struct *kb = kbd_table + console; |
079c9534 AC |
1876 | struct kbentry tmp; |
1877 | ushort *key_map, *new_map, val, ov; | |
1878 | unsigned long flags; | |
1879 | ||
1880 | if (copy_from_user(&tmp, user_kbe, sizeof(struct kbentry))) | |
1881 | return -EFAULT; | |
1882 | ||
1883 | if (!capable(CAP_SYS_TTY_CONFIG)) | |
1884 | perm = 0; | |
1885 | ||
1886 | switch (cmd) { | |
1887 | case KDGKBENT: | |
1888 | /* Ensure another thread doesn't free it under us */ | |
1889 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1890 | key_map = key_maps[s]; | |
1891 | if (key_map) { | |
1892 | val = U(key_map[i]); | |
9d329c1c | 1893 | if (kb->kbdmode != VC_UNICODE && KTYP(val) >= NR_TYPES) |
079c9534 AC |
1894 | val = K_HOLE; |
1895 | } else | |
1896 | val = (i ? K_HOLE : K_NOSUCHMAP); | |
1897 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1898 | return put_user(val, &user_kbe->kb_value); | |
1899 | case KDSKBENT: | |
1900 | if (!perm) | |
1901 | return -EPERM; | |
1902 | if (!i && v == K_NOSUCHMAP) { | |
1903 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1904 | /* deallocate map */ | |
1905 | key_map = key_maps[s]; | |
1906 | if (s && key_map) { | |
1907 | key_maps[s] = NULL; | |
1908 | if (key_map[0] == U(K_ALLOCATED)) { | |
1909 | kfree(key_map); | |
1910 | keymap_count--; | |
1911 | } | |
1912 | } | |
1913 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1914 | break; | |
1915 | } | |
1916 | ||
1917 | if (KTYP(v) < NR_TYPES) { | |
1918 | if (KVAL(v) > max_vals[KTYP(v)]) | |
1919 | return -EINVAL; | |
1920 | } else | |
9d329c1c | 1921 | if (kb->kbdmode != VC_UNICODE) |
079c9534 AC |
1922 | return -EINVAL; |
1923 | ||
1924 | /* ++Geert: non-PC keyboards may generate keycode zero */ | |
1925 | #if !defined(__mc68000__) && !defined(__powerpc__) | |
1926 | /* assignment to entry 0 only tests validity of args */ | |
1927 | if (!i) | |
1928 | break; | |
1929 | #endif | |
1930 | ||
1931 | new_map = kmalloc(sizeof(plain_map), GFP_KERNEL); | |
1932 | if (!new_map) | |
1933 | return -ENOMEM; | |
1934 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1935 | key_map = key_maps[s]; | |
1936 | if (key_map == NULL) { | |
1937 | int j; | |
1938 | ||
1939 | if (keymap_count >= MAX_NR_OF_USER_KEYMAPS && | |
1940 | !capable(CAP_SYS_RESOURCE)) { | |
1941 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1942 | kfree(new_map); | |
1943 | return -EPERM; | |
1944 | } | |
1945 | key_maps[s] = new_map; | |
82896210 | 1946 | key_map = new_map; |
079c9534 AC |
1947 | key_map[0] = U(K_ALLOCATED); |
1948 | for (j = 1; j < NR_KEYS; j++) | |
1949 | key_map[j] = U(K_HOLE); | |
1950 | keymap_count++; | |
1951 | } else | |
1952 | kfree(new_map); | |
1953 | ||
1954 | ov = U(key_map[i]); | |
1955 | if (v == ov) | |
1956 | goto out; | |
1957 | /* | |
1958 | * Attention Key. | |
1959 | */ | |
1960 | if (((ov == K_SAK) || (v == K_SAK)) && !capable(CAP_SYS_ADMIN)) { | |
1961 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1962 | return -EPERM; | |
1963 | } | |
1964 | key_map[i] = U(v); | |
1965 | if (!s && (KTYP(ov) == KT_SHIFT || KTYP(v) == KT_SHIFT)) | |
1966 | do_compute_shiftstate(); | |
1967 | out: | |
1968 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1969 | break; | |
1970 | } | |
1971 | return 0; | |
1972 | } | |
1973 | #undef i | |
1974 | #undef s | |
1975 | #undef v | |
1976 | ||
1977 | /* FIXME: This one needs untangling and locking */ | |
1978 | int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm) | |
1979 | { | |
1980 | struct kbsentry *kbs; | |
1981 | char *p; | |
1982 | u_char *q; | |
1983 | u_char __user *up; | |
1984 | int sz; | |
1985 | int delta; | |
1986 | char *first_free, *fj, *fnw; | |
1987 | int i, j, k; | |
1988 | int ret; | |
1989 | ||
1990 | if (!capable(CAP_SYS_TTY_CONFIG)) | |
1991 | perm = 0; | |
1992 | ||
1993 | kbs = kmalloc(sizeof(*kbs), GFP_KERNEL); | |
1994 | if (!kbs) { | |
1995 | ret = -ENOMEM; | |
1996 | goto reterr; | |
1997 | } | |
1998 | ||
1999 | /* we mostly copy too much here (512bytes), but who cares ;) */ | |
2000 | if (copy_from_user(kbs, user_kdgkb, sizeof(struct kbsentry))) { | |
2001 | ret = -EFAULT; | |
2002 | goto reterr; | |
2003 | } | |
2004 | kbs->kb_string[sizeof(kbs->kb_string)-1] = '\0'; | |
2005 | i = kbs->kb_func; | |
2006 | ||
2007 | switch (cmd) { | |
2008 | case KDGKBSENT: | |
2009 | sz = sizeof(kbs->kb_string) - 1; /* sz should have been | |
2010 | a struct member */ | |
2011 | up = user_kdgkb->kb_string; | |
2012 | p = func_table[i]; | |
2013 | if(p) | |
2014 | for ( ; *p && sz; p++, sz--) | |
2015 | if (put_user(*p, up++)) { | |
2016 | ret = -EFAULT; | |
2017 | goto reterr; | |
2018 | } | |
2019 | if (put_user('\0', up)) { | |
2020 | ret = -EFAULT; | |
2021 | goto reterr; | |
2022 | } | |
2023 | kfree(kbs); | |
2024 | return ((p && *p) ? -EOVERFLOW : 0); | |
2025 | case KDSKBSENT: | |
2026 | if (!perm) { | |
2027 | ret = -EPERM; | |
2028 | goto reterr; | |
2029 | } | |
2030 | ||
2031 | q = func_table[i]; | |
2032 | first_free = funcbufptr + (funcbufsize - funcbufleft); | |
2033 | for (j = i+1; j < MAX_NR_FUNC && !func_table[j]; j++) | |
2034 | ; | |
2035 | if (j < MAX_NR_FUNC) | |
2036 | fj = func_table[j]; | |
2037 | else | |
2038 | fj = first_free; | |
2039 | ||
2040 | delta = (q ? -strlen(q) : 1) + strlen(kbs->kb_string); | |
2041 | if (delta <= funcbufleft) { /* it fits in current buf */ | |
2042 | if (j < MAX_NR_FUNC) { | |
2043 | memmove(fj + delta, fj, first_free - fj); | |
2044 | for (k = j; k < MAX_NR_FUNC; k++) | |
2045 | if (func_table[k]) | |
2046 | func_table[k] += delta; | |
2047 | } | |
2048 | if (!q) | |
2049 | func_table[i] = fj; | |
2050 | funcbufleft -= delta; | |
2051 | } else { /* allocate a larger buffer */ | |
2052 | sz = 256; | |
2053 | while (sz < funcbufsize - funcbufleft + delta) | |
2054 | sz <<= 1; | |
2055 | fnw = kmalloc(sz, GFP_KERNEL); | |
2056 | if(!fnw) { | |
2057 | ret = -ENOMEM; | |
2058 | goto reterr; | |
2059 | } | |
2060 | ||
2061 | if (!q) | |
2062 | func_table[i] = fj; | |
2063 | if (fj > funcbufptr) | |
2064 | memmove(fnw, funcbufptr, fj - funcbufptr); | |
2065 | for (k = 0; k < j; k++) | |
2066 | if (func_table[k]) | |
2067 | func_table[k] = fnw + (func_table[k] - funcbufptr); | |
2068 | ||
2069 | if (first_free > fj) { | |
2070 | memmove(fnw + (fj - funcbufptr) + delta, fj, first_free - fj); | |
2071 | for (k = j; k < MAX_NR_FUNC; k++) | |
2072 | if (func_table[k]) | |
2073 | func_table[k] = fnw + (func_table[k] - funcbufptr) + delta; | |
2074 | } | |
2075 | if (funcbufptr != func_buf) | |
2076 | kfree(funcbufptr); | |
2077 | funcbufptr = fnw; | |
2078 | funcbufleft = funcbufleft - delta + sz - funcbufsize; | |
2079 | funcbufsize = sz; | |
2080 | } | |
2081 | strcpy(func_table[i], kbs->kb_string); | |
2082 | break; | |
2083 | } | |
2084 | ret = 0; | |
2085 | reterr: | |
2086 | kfree(kbs); | |
2087 | return ret; | |
2088 | } | |
2089 | ||
2090 | int vt_do_kdskled(int console, int cmd, unsigned long arg, int perm) | |
2091 | { | |
9d329c1c | 2092 | struct kbd_struct *kb = kbd_table + console; |
079c9534 AC |
2093 | unsigned long flags; |
2094 | unsigned char ucval; | |
2095 | ||
2096 | switch(cmd) { | |
2097 | /* the ioctls below read/set the flags usually shown in the leds */ | |
2098 | /* don't use them - they will go away without warning */ | |
2099 | case KDGKBLED: | |
2100 | spin_lock_irqsave(&kbd_event_lock, flags); | |
9d329c1c | 2101 | ucval = kb->ledflagstate | (kb->default_ledflagstate << 4); |
079c9534 AC |
2102 | spin_unlock_irqrestore(&kbd_event_lock, flags); |
2103 | return put_user(ucval, (char __user *)arg); | |
2104 | ||
2105 | case KDSKBLED: | |
2106 | if (!perm) | |
2107 | return -EPERM; | |
2108 | if (arg & ~0x77) | |
2109 | return -EINVAL; | |
3db1ddb7 | 2110 | spin_lock_irqsave(&led_lock, flags); |
9d329c1c MR |
2111 | kb->ledflagstate = (arg & 7); |
2112 | kb->default_ledflagstate = ((arg >> 4) & 7); | |
079c9534 | 2113 | set_leds(); |
3db1ddb7 | 2114 | spin_unlock_irqrestore(&led_lock, flags); |
eea41aee | 2115 | return 0; |
079c9534 AC |
2116 | |
2117 | /* the ioctls below only set the lights, not the functions */ | |
2118 | /* for those, see KDGKBLED and KDSKBLED above */ | |
2119 | case KDGETLED: | |
2120 | ucval = getledstate(); | |
2121 | return put_user(ucval, (char __user *)arg); | |
2122 | ||
2123 | case KDSETLED: | |
2124 | if (!perm) | |
2125 | return -EPERM; | |
9d329c1c | 2126 | setledstate(kb, arg); |
079c9534 AC |
2127 | return 0; |
2128 | } | |
2129 | return -ENOIOCTLCMD; | |
2130 | } | |
2131 | ||
2132 | int vt_do_kdgkbmode(int console) | |
2133 | { | |
9d329c1c | 2134 | struct kbd_struct *kb = kbd_table + console; |
079c9534 | 2135 | /* This is a spot read so needs no locking */ |
9d329c1c | 2136 | switch (kb->kbdmode) { |
079c9534 AC |
2137 | case VC_RAW: |
2138 | return K_RAW; | |
2139 | case VC_MEDIUMRAW: | |
2140 | return K_MEDIUMRAW; | |
2141 | case VC_UNICODE: | |
2142 | return K_UNICODE; | |
2143 | case VC_OFF: | |
2144 | return K_OFF; | |
2145 | default: | |
2146 | return K_XLATE; | |
2147 | } | |
2148 | } | |
2149 | ||
2150 | /** | |
2151 | * vt_do_kdgkbmeta - report meta status | |
2152 | * @console: console to report | |
2153 | * | |
2154 | * Report the meta flag status of this console | |
2155 | */ | |
2156 | int vt_do_kdgkbmeta(int console) | |
2157 | { | |
9d329c1c | 2158 | struct kbd_struct *kb = kbd_table + console; |
079c9534 | 2159 | /* Again a spot read so no locking */ |
9d329c1c | 2160 | return vc_kbd_mode(kb, VC_META) ? K_ESCPREFIX : K_METABIT; |
079c9534 AC |
2161 | } |
2162 | ||
2163 | /** | |
2164 | * vt_reset_unicode - reset the unicode status | |
2165 | * @console: console being reset | |
2166 | * | |
2167 | * Restore the unicode console state to its default | |
2168 | */ | |
2169 | void vt_reset_unicode(int console) | |
2170 | { | |
2171 | unsigned long flags; | |
2172 | ||
2173 | spin_lock_irqsave(&kbd_event_lock, flags); | |
2174 | kbd_table[console].kbdmode = default_utf8 ? VC_UNICODE : VC_XLATE; | |
2175 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
2176 | } | |
2177 | ||
2178 | /** | |
2179 | * vt_get_shiftstate - shift bit state | |
2180 | * | |
2181 | * Report the shift bits from the keyboard state. We have to export | |
2182 | * this to support some oddities in the vt layer. | |
2183 | */ | |
2184 | int vt_get_shift_state(void) | |
2185 | { | |
2186 | /* Don't lock as this is a transient report */ | |
2187 | return shift_state; | |
2188 | } | |
2189 | ||
2190 | /** | |
2191 | * vt_reset_keyboard - reset keyboard state | |
2192 | * @console: console to reset | |
2193 | * | |
2194 | * Reset the keyboard bits for a console as part of a general console | |
2195 | * reset event | |
2196 | */ | |
2197 | void vt_reset_keyboard(int console) | |
2198 | { | |
9d329c1c | 2199 | struct kbd_struct *kb = kbd_table + console; |
079c9534 AC |
2200 | unsigned long flags; |
2201 | ||
2202 | spin_lock_irqsave(&kbd_event_lock, flags); | |
9d329c1c MR |
2203 | set_vc_kbd_mode(kb, VC_REPEAT); |
2204 | clr_vc_kbd_mode(kb, VC_CKMODE); | |
2205 | clr_vc_kbd_mode(kb, VC_APPLIC); | |
2206 | clr_vc_kbd_mode(kb, VC_CRLF); | |
2207 | kb->lockstate = 0; | |
2208 | kb->slockstate = 0; | |
3db1ddb7 | 2209 | spin_lock(&led_lock); |
9d329c1c MR |
2210 | kb->ledmode = LED_SHOW_FLAGS; |
2211 | kb->ledflagstate = kb->default_ledflagstate; | |
3db1ddb7 | 2212 | spin_unlock(&led_lock); |
079c9534 AC |
2213 | /* do not do set_leds here because this causes an endless tasklet loop |
2214 | when the keyboard hasn't been initialized yet */ | |
2215 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
2216 | } | |
2217 | ||
2218 | /** | |
2219 | * vt_get_kbd_mode_bit - read keyboard status bits | |
2220 | * @console: console to read from | |
2221 | * @bit: mode bit to read | |
2222 | * | |
2223 | * Report back a vt mode bit. We do this without locking so the | |
2224 | * caller must be sure that there are no synchronization needs | |
2225 | */ | |
2226 | ||
2227 | int vt_get_kbd_mode_bit(int console, int bit) | |
2228 | { | |
9d329c1c MR |
2229 | struct kbd_struct *kb = kbd_table + console; |
2230 | return vc_kbd_mode(kb, bit); | |
079c9534 AC |
2231 | } |
2232 | ||
2233 | /** | |
2234 | * vt_set_kbd_mode_bit - read keyboard status bits | |
2235 | * @console: console to read from | |
2236 | * @bit: mode bit to read | |
2237 | * | |
2238 | * Set a vt mode bit. We do this without locking so the | |
2239 | * caller must be sure that there are no synchronization needs | |
2240 | */ | |
2241 | ||
2242 | void vt_set_kbd_mode_bit(int console, int bit) | |
2243 | { | |
9d329c1c | 2244 | struct kbd_struct *kb = kbd_table + console; |
079c9534 AC |
2245 | unsigned long flags; |
2246 | ||
2247 | spin_lock_irqsave(&kbd_event_lock, flags); | |
9d329c1c | 2248 | set_vc_kbd_mode(kb, bit); |
079c9534 AC |
2249 | spin_unlock_irqrestore(&kbd_event_lock, flags); |
2250 | } | |
2251 | ||
2252 | /** | |
2253 | * vt_clr_kbd_mode_bit - read keyboard status bits | |
2254 | * @console: console to read from | |
2255 | * @bit: mode bit to read | |
2256 | * | |
2257 | * Report back a vt mode bit. We do this without locking so the | |
2258 | * caller must be sure that there are no synchronization needs | |
2259 | */ | |
2260 | ||
2261 | void vt_clr_kbd_mode_bit(int console, int bit) | |
2262 | { | |
9d329c1c | 2263 | struct kbd_struct *kb = kbd_table + console; |
079c9534 AC |
2264 | unsigned long flags; |
2265 | ||
2266 | spin_lock_irqsave(&kbd_event_lock, flags); | |
9d329c1c | 2267 | clr_vc_kbd_mode(kb, bit); |
079c9534 AC |
2268 | spin_unlock_irqrestore(&kbd_event_lock, flags); |
2269 | } |