diff options
Diffstat (limited to 'drivers/char/keyboard.c')
| -rw-r--r-- | drivers/char/keyboard.c | 1454 |
1 files changed, 0 insertions, 1454 deletions
diff --git a/drivers/char/keyboard.c b/drivers/char/keyboard.c deleted file mode 100644 index e95d7876ca6..00000000000 --- a/drivers/char/keyboard.c +++ /dev/null @@ -1,1454 +0,0 @@ -/* - * linux/drivers/char/keyboard.c - * - * Written for linux by Johan Myreen as a translation from - * the assembly version by Linus (with diacriticals added) - * - * Some additional features added by Christoph Niemann (ChN), March 1993 - * - * Loadable keymaps by Risto Kankkunen, May 1993 - * - * Diacriticals redone & other small changes, aeb@cwi.nl, June 1993 - * Added decr/incr_console, dynamic keymaps, Unicode support, - * dynamic function/string keys, led setting, Sept 1994 - * `Sticky' modifier keys, 951006. - * - * 11-11-96: SAK should now work in the raw mode (Martin Mares) - * - * Modified to provide 'generic' keyboard support by Hamish Macdonald - * Merge with the m68k keyboard driver and split-off of the PC low-level - * parts by Geert Uytterhoeven, May 1997 - * - * 27-05-97: Added support for the Magic SysRq Key (Martin Mares) - * 30-07-98: Dead keys redone, aeb@cwi.nl. - * 21-08-02: Converted to input API, major cleanup. (Vojtech Pavlik) - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/consolemap.h> -#include <linux/module.h> -#include <linux/sched.h> -#include <linux/tty.h> -#include <linux/tty_flip.h> -#include <linux/mm.h> -#include <linux/string.h> -#include <linux/init.h> -#include <linux/slab.h> -#include <linux/irq.h> - -#include <linux/kbd_kern.h> -#include <linux/kbd_diacr.h> -#include <linux/vt_kern.h> -#include <linux/input.h> -#include <linux/reboot.h> -#include <linux/notifier.h> -#include <linux/jiffies.h> - -extern void ctrl_alt_del(void); - -/* - * Exported functions/variables - */ - -#define KBD_DEFMODE ((1 << VC_REPEAT) | (1 << VC_META)) - -/* - * Some laptops take the 789uiojklm,. keys as number pad when NumLock is on. - * This seems a good reason to start with NumLock off. On HIL keyboards - * of PARISC machines however there is no NumLock key and everyone expects the keypad - * to be used for numbers. - */ - -#if defined(CONFIG_PARISC) && (defined(CONFIG_KEYBOARD_HIL) || defined(CONFIG_KEYBOARD_HIL_OLD)) -#define KBD_DEFLEDS (1 << VC_NUMLOCK) -#else -#define KBD_DEFLEDS 0 -#endif - -#define KBD_DEFLOCK 0 - -void compute_shiftstate(void); - -/* - * Handler Tables. - */ - -#define K_HANDLERS\ - k_self, k_fn, k_spec, k_pad,\ - k_dead, k_cons, k_cur, k_shift,\ - k_meta, k_ascii, k_lock, k_lowercase,\ - k_slock, k_dead2, k_brl, k_ignore - -typedef void (k_handler_fn)(struct vc_data *vc, unsigned char value, - char up_flag); -static k_handler_fn K_HANDLERS; -static k_handler_fn *k_handler[16] = { K_HANDLERS }; - -#define FN_HANDLERS\ - fn_null, fn_enter, fn_show_ptregs, fn_show_mem,\ - fn_show_state, fn_send_intr, fn_lastcons, fn_caps_toggle,\ - fn_num, fn_hold, fn_scroll_forw, fn_scroll_back,\ - fn_boot_it, fn_caps_on, fn_compose, fn_SAK,\ - fn_dec_console, fn_inc_console, fn_spawn_con, fn_bare_num - -typedef void (fn_handler_fn)(struct vc_data *vc); -static fn_handler_fn FN_HANDLERS; -static fn_handler_fn *fn_handler[] = { FN_HANDLERS }; - -/* - * Variables exported for vt_ioctl.c - */ - -/* maximum values each key_handler can handle */ -const int max_vals[] = { - 255, ARRAY_SIZE(func_table) - 1, ARRAY_SIZE(fn_handler) - 1, NR_PAD - 1, - NR_DEAD - 1, 255, 3, NR_SHIFT - 1, 255, NR_ASCII - 1, NR_LOCK - 1, - 255, NR_LOCK - 1, 255, NR_BRL - 1 -}; - -const int NR_TYPES = ARRAY_SIZE(max_vals); - -struct kbd_struct kbd_table[MAX_NR_CONSOLES]; -EXPORT_SYMBOL_GPL(kbd_table); -static struct kbd_struct *kbd = kbd_table; - -struct vt_spawn_console vt_spawn_con = { - .lock = __SPIN_LOCK_UNLOCKED(vt_spawn_con.lock), - .pid = NULL, - .sig = 0, -}; - -/* - * Variables exported for vt.c - */ - -int shift_state = 0; - -/* - * Internal Data. - */ - -static struct input_handler kbd_handler; -static DEFINE_SPINLOCK(kbd_event_lock); -static unsigned long key_down[BITS_TO_LONGS(KEY_CNT)]; /* keyboard key bitmap */ -static unsigned char shift_down[NR_SHIFT]; /* shift state counters.. */ -static bool dead_key_next; -static int npadch = -1; /* -1 or number assembled on pad */ -static unsigned int diacr; -static char rep; /* flag telling character repeat */ - -static unsigned char ledstate = 0xff; /* undefined */ -static unsigned char ledioctl; - -static struct ledptr { - unsigned int *addr; - unsigned int mask; - unsigned char valid:1; -} ledptrs[3]; - -/* - * Notifier list for console keyboard events - */ -static ATOMIC_NOTIFIER_HEAD(keyboard_notifier_list); - -int register_keyboard_notifier(struct notifier_block *nb) -{ - return atomic_notifier_chain_register(&keyboard_notifier_list, nb); -} -EXPORT_SYMBOL_GPL(register_keyboard_notifier); - -int unregister_keyboard_notifier(struct notifier_block *nb) -{ - return atomic_notifier_chain_unregister(&keyboard_notifier_list, nb); -} -EXPORT_SYMBOL_GPL(unregister_keyboard_notifier); - -/* - * Translation of scancodes to keycodes. We set them on only the first - * keyboard in the list that accepts the scancode and keycode. - * Explanation for not choosing the first attached keyboard anymore: - * USB keyboards for example have two event devices: one for all "normal" - * keys and one for extra function keys (like "volume up", "make coffee", - * etc.). So this means that scancodes for the extra function keys won't - * be valid for the first event device, but will be for the second. - */ - -struct getset_keycode_data { - struct input_keymap_entry ke; - int error; -}; - -static int getkeycode_helper(struct input_handle *handle, void *data) -{ - struct getset_keycode_data *d = data; - - d->error = input_get_keycode(handle->dev, &d->ke); - - return d->error == 0; /* stop as soon as we successfully get one */ -} - -int getkeycode(unsigned int scancode) -{ - struct getset_keycode_data d = { - .ke = { - .flags = 0, - .len = sizeof(scancode), - .keycode = 0, - }, - .error = -ENODEV, - }; - - memcpy(d.ke.scancode, &scancode, sizeof(scancode)); - - input_handler_for_each_handle(&kbd_handler, &d, getkeycode_helper); - - return d.error ?: d.ke.keycode; -} - -static int setkeycode_helper(struct input_handle *handle, void *data) -{ - struct getset_keycode_data *d = data; - - d->error = input_set_keycode(handle->dev, &d->ke); - - return d->error == 0; /* stop as soon as we successfully set one */ -} - -int setkeycode(unsigned int scancode, unsigned int keycode) -{ - struct getset_keycode_data d = { - .ke = { - .flags = 0, - .len = sizeof(scancode), - .keycode = keycode, - }, - .error = -ENODEV, - }; - - memcpy(d.ke.scancode, &scancode, sizeof(scancode)); - - input_handler_for_each_handle(&kbd_handler, &d, setkeycode_helper); - - return d.error; -} - -/* - * Making beeps and bells. Note that we prefer beeps to bells, but when - * shutting the sound off we do both. - */ - -static int kd_sound_helper(struct input_handle *handle, void *data) -{ - unsigned int *hz = data; - struct input_dev *dev = handle->dev; - - if (test_bit(EV_SND, dev->evbit)) { - if (test_bit(SND_TONE, dev->sndbit)) { - input_inject_event(handle, EV_SND, SND_TONE, *hz); - if (*hz) - return 0; - } - if (test_bit(SND_BELL, dev->sndbit)) - input_inject_event(handle, EV_SND, SND_BELL, *hz ? 1 : 0); - } - - return 0; -} - -static void kd_nosound(unsigned long ignored) -{ - static unsigned int zero; - - input_handler_for_each_handle(&kbd_handler, &zero, kd_sound_helper); -} - -static DEFINE_TIMER(kd_mksound_timer, kd_nosound, 0, 0); - -void kd_mksound(unsigned int hz, unsigned int ticks) -{ - del_timer_sync(&kd_mksound_timer); - - input_handler_for_each_handle(&kbd_handler, &hz, kd_sound_helper); - - if (hz && ticks) - mod_timer(&kd_mksound_timer, jiffies + ticks); -} -EXPORT_SYMBOL(kd_mksound); - -/* - * Setting the keyboard rate. - */ - -static int kbd_rate_helper(struct input_handle *handle, void *data) -{ - struct input_dev *dev = handle->dev; - struct kbd_repeat *rep = data; - - if (test_bit(EV_REP, dev->evbit)) { - - if (rep[0].delay > 0) - input_inject_event(handle, - EV_REP, REP_DELAY, rep[0].delay); - if (rep[0].period > 0) - input_inject_event(handle, - EV_REP, REP_PERIOD, rep[0].period); - - rep[1].delay = dev->rep[REP_DELAY]; - rep[1].period = dev->rep[REP_PERIOD]; - } - - return 0; -} - -int kbd_rate(struct kbd_repeat *rep) -{ - struct kbd_repeat data[2] = { *rep }; - - input_handler_for_each_handle(&kbd_handler, data, kbd_rate_helper); - *rep = data[1]; /* Copy currently used settings */ - - return 0; -} - -/* - * Helper Functions. - */ -static void put_queue(struct vc_data *vc, int ch) -{ - struct tty_struct *tty = vc->port.tty; - - if (tty) { - tty_insert_flip_char(tty, ch, 0); - con_schedule_flip(tty); - } -} - -static void puts_queue(struct vc_data *vc, char *cp) -{ - struct tty_struct *tty = vc->port.tty; - - if (!tty) - return; - - while (*cp) { - tty_insert_flip_char(tty, *cp, 0); - cp++; - } - con_schedule_flip(tty); -} - -static void applkey(struct vc_data *vc, int key, char mode) -{ - static char buf[] = { 0x1b, 'O', 0x00, 0x00 }; - - buf[1] = (mode ? 'O' : '['); - buf[2] = key; - puts_queue(vc, buf); -} - -/* - * Many other routines do put_queue, but I think either - * they produce ASCII, or they produce some user-assigned - * string, and in both cases we might assume that it is - * in utf-8 already. - */ -static void to_utf8(struct vc_data *vc, uint c) -{ - if (c < 0x80) - /* 0******* */ - put_queue(vc, c); - else if (c < 0x800) { - /* 110***** 10****** */ - put_queue(vc, 0xc0 | (c >> 6)); - put_queue(vc, 0x80 | (c & 0x3f)); - } else if (c < 0x10000) { - if (c >= 0xD800 && c < 0xE000) - return; - if (c == 0xFFFF) - return; - /* 1110**** 10****** 10****** */ - put_queue(vc, 0xe0 | (c >> 12)); - put_queue(vc, 0x80 | ((c >> 6) & 0x3f)); - put_queue(vc, 0x80 | (c & 0x3f)); - } else if (c < 0x110000) { - /* 11110*** 10****** 10****** 10****** */ - put_queue(vc, 0xf0 | (c >> 18)); - put_queue(vc, 0x80 | ((c >> 12) & 0x3f)); - put_queue(vc, 0x80 | ((c >> 6) & 0x3f)); - put_queue(vc, 0x80 | (c & 0x3f)); - } -} - -/* - * Called after returning from RAW mode or when changing consoles - recompute - * shift_down[] and shift_state from key_down[] maybe called when keymap is - * undefined, so that shiftkey release is seen - */ -void compute_shiftstate(void) -{ - unsigned int i, j, k, sym, val; - - shift_state = 0; - memset(shift_down, 0, sizeof(shift_down)); - - for (i = 0; i < ARRAY_SIZE(key_down); i++) { - - if (!key_down[i]) - continue; - - k = i * BITS_PER_LONG; - - for (j = 0; j < BITS_PER_LONG; j++, k++) { - - if (!test_bit(k, key_down)) - continue; - - sym = U(key_maps[0][k]); - if (KTYP(sym) != KT_SHIFT && KTYP(sym) != KT_SLOCK) - continue; - - val = KVAL(sym); - if (val == KVAL(K_CAPSSHIFT)) - val = KVAL(K_SHIFT); - - shift_down[val]++; - shift_state |= (1 << val); - } - } -} - -/* - * We have a combining character DIACR here, followed by the character CH. - * If the combination occurs in the table, return the corresponding value. - * Otherwise, if CH is a space or equals DIACR, return DIACR. - * Otherwise, conclude that DIACR was not combining after all, - * queue it and return CH. - */ -static unsigned int handle_diacr(struct vc_data *vc, unsigned int ch) -{ - unsigned int d = diacr; - unsigned int i; - - diacr = 0; - - if ((d & ~0xff) == BRL_UC_ROW) { - if ((ch & ~0xff) == BRL_UC_ROW) - return d | ch; - } else { - for (i = 0; i < accent_table_size; i++) - if (accent_table[i].diacr == d && accent_table[i].base == ch) - return accent_table[i].result; - } - - if (ch == ' ' || ch == (BRL_UC_ROW|0) || ch == d) - return d; - - if (kbd->kbdmode == VC_UNICODE) - to_utf8(vc, d); - else { - int c = conv_uni_to_8bit(d); - if (c != -1) - put_queue(vc, c); - } - - return ch; -} - -/* - * Special function handlers - */ -static void fn_enter(struct vc_data *vc) -{ - if (diacr) { - if (kbd->kbdmode == VC_UNICODE) - to_utf8(vc, diacr); - else { - int c = conv_uni_to_8bit(diacr); - if (c != -1) - put_queue(vc, c); - } - diacr = 0; - } - - put_queue(vc, 13); - if (vc_kbd_mode(kbd, VC_CRLF)) - put_queue(vc, 10); -} - -static void fn_caps_toggle(struct vc_data *vc) -{ - if (rep) - return; - - chg_vc_kbd_led(kbd, VC_CAPSLOCK); -} - -static void fn_caps_on(struct vc_data *vc) -{ - if (rep) - return; - - set_vc_kbd_led(kbd, VC_CAPSLOCK); -} - -static void fn_show_ptregs(struct vc_data *vc) -{ - struct pt_regs *regs = get_irq_regs(); - - if (regs) - show_regs(regs); -} - -static void fn_hold(struct vc_data *vc) -{ - struct tty_struct *tty = vc->port.tty; - - if (rep || !tty) - return; - - /* - * Note: SCROLLOCK will be set (cleared) by stop_tty (start_tty); - * these routines are also activated by ^S/^Q. - * (And SCROLLOCK can also be set by the ioctl KDSKBLED.) - */ - if (tty->stopped) - start_tty(tty); - else - stop_tty(tty); -} - -static void fn_num(struct vc_data *vc) -{ - if (vc_kbd_mode(kbd, VC_APPLIC)) - applkey(vc, 'P', 1); - else - fn_bare_num(vc); -} - -/* - * Bind this to Shift-NumLock if you work in application keypad mode - * but want to be able to change the NumLock flag. - * Bind this to NumLock if you prefer that the NumLock key always - * changes the NumLock flag. - */ -static void fn_bare_num(struct vc_data *vc) -{ - if (!rep) - chg_vc_kbd_led(kbd, VC_NUMLOCK); -} - -static void fn_lastcons(struct vc_data *vc) -{ - /* switch to the last used console, ChN */ - set_console(last_console); -} - -static void fn_dec_console(struct vc_data *vc) -{ - int i, cur = fg_console; - - /* Currently switching? Queue this next switch relative to that. */ - if (want_console != -1) - cur = want_console; - - for (i = cur - 1; i != cur; i--) { - if (i == -1) - i = MAX_NR_CONSOLES - 1; - if (vc_cons_allocated(i)) - break; - } - set_console(i); -} - -static void fn_inc_console(struct vc_data *vc) -{ - int i, cur = fg_console; - - /* Currently switching? Queue this next switch relative to that. */ - if (want_console != -1) - cur = want_console; - - for (i = cur+1; i != cur; i++) { - if (i == MAX_NR_CONSOLES) - i = 0; - if (vc_cons_allocated(i)) - break; - } - set_console(i); -} - -static void fn_send_intr(struct vc_data *vc) -{ - struct tty_struct *tty = vc->port.tty; - - if (!tty) - return; - tty_insert_flip_char(tty, 0, TTY_BREAK); - con_schedule_flip(tty); -} - -static void fn_scroll_forw(struct vc_data *vc) -{ - scrollfront(vc, 0); -} - -static void fn_scroll_back(struct vc_data *vc) -{ - scrollback(vc, 0); -} - -static void fn_show_mem(struct vc_data *vc) -{ - show_mem(); -} - -static void fn_show_state(struct vc_data *vc) -{ - show_state(); -} - -static void fn_boot_it(struct vc_data *vc) -{ - ctrl_alt_del(); -} - -static void fn_compose(struct vc_data *vc) -{ - dead_key_next = true; -} - -static void fn_spawn_con(struct vc_data *vc) -{ - spin_lock(&vt_spawn_con.lock); - if (vt_spawn_con.pid) - if (kill_pid(vt_spawn_con.pid, vt_spawn_con.sig, 1)) { - put_pid(vt_spawn_con.pid); - vt_spawn_con.pid = NULL; - } - spin_unlock(&vt_spawn_con.lock); -} - -static void fn_SAK(struct vc_data *vc) -{ - struct work_struct *SAK_work = &vc_cons[fg_console].SAK_work; - schedule_work(SAK_work); -} - -static void fn_null(struct vc_data *vc) -{ - compute_shiftstate(); -} - -/* - * Special key handlers - */ -static void k_ignore(struct vc_data *vc, unsigned char value, char up_flag) -{ -} - -static void k_spec(struct vc_data *vc, unsigned char value, char up_flag) -{ - if (up_flag) - return; - if (value >= ARRAY_SIZE(fn_handler)) - return; - if ((kbd->kbdmode == VC_RAW || - kbd->kbdmode == VC_MEDIUMRAW) && - value != KVAL(K_SAK)) - return; /* SAK is allowed even in raw mode */ - fn_handler[value](vc); -} - -static void k_lowercase(struct vc_data *vc, unsigned char value, char up_flag) -{ - pr_err("k_lowercase was called - impossible\n"); -} - -static void k_unicode(struct vc_data *vc, unsigned int value, char up_flag) -{ - if (up_flag) - return; /* no action, if this is a key release */ - - if (diacr) - value = handle_diacr(vc, value); - - if (dead_key_next) { - dead_key_next = false; - diacr = value; - return; - } - if (kbd->kbdmode == VC_UNICODE) - to_utf8(vc, value); - else { - int c = conv_uni_to_8bit(value); - if (c != -1) - put_queue(vc, c); - } -} - -/* - * Handle dead key. Note that we now may have several - * dead keys modifying the same character. Very useful - * for Vietnamese. - */ -static void k_deadunicode(struct vc_data *vc, unsigned int value, char up_flag) -{ - if (up_flag) - return; - - diacr = (diacr ? handle_diacr(vc, value) : value); -} - -static void k_self(struct vc_data *vc, unsigned char value, char up_flag) -{ - k_unicode(vc, conv_8bit_to_uni(value), up_flag); -} - -static void k_dead2(struct vc_data *vc, unsigned char value, char up_flag) -{ - k_deadunicode(vc, value, up_flag); -} - -/* - * Obsolete - for backwards compatibility only - */ -static void k_dead(struct vc_data *vc, unsigned char value, char up_flag) -{ - static const unsigned char ret_diacr[NR_DEAD] = {'`', '\'', '^', '~', '"', ',' }; - - k_deadunicode(vc, ret_diacr[value], up_flag); -} - -static void k_cons(struct vc_data *vc, unsigned char value, char up_flag) -{ - if (up_flag) - return; - - set_console(value); -} - -static void k_fn(struct vc_data *vc, unsigned char value, char up_flag) -{ - if (up_flag) - return; - - if ((unsigned)value < ARRAY_SIZE(func_table)) { - if (func_table[value]) - puts_queue(vc, func_table[value]); - } else - pr_err("k_fn called with value=%d\n", value); -} - -static void k_cur(struct vc_data *vc, unsigned char value, char up_flag) -{ - static const char cur_chars[] = "BDCA"; - - if (up_flag) - return; - - applkey(vc, cur_chars[value], vc_kbd_mode(kbd, VC_CKMODE)); -} - -static void k_pad(struct vc_data *vc, unsigned char value, char up_flag) -{ - static const char pad_chars[] = "0123456789+-*/\015,.?()#"; - static const char app_map[] = "pqrstuvwxylSRQMnnmPQS"; - - if (up_flag) - return; /* no action, if this is a key release */ - - /* kludge... shift forces cursor/number keys */ - if (vc_kbd_mode(kbd, VC_APPLIC) && !shift_down[KG_SHIFT]) { - applkey(vc, app_map[value], 1); - return; - } - - if (!vc_kbd_led(kbd, VC_NUMLOCK)) { - - switch (value) { - case KVAL(K_PCOMMA): - case KVAL(K_PDOT): - k_fn(vc, KVAL(K_REMOVE), 0); - return; - case KVAL(K_P0): - k_fn(vc, KVAL(K_INSERT), 0); - return; - case KVAL(K_P1): - k_fn(vc, KVAL(K_SELECT), 0); - return; - case KVAL(K_P2): - k_cur(vc, KVAL(K_DOWN), 0); - return; - case KVAL(K_P3): - k_fn(vc, KVAL(K_PGDN), 0); - return; - case KVAL(K_P4): - k_cur(vc, KVAL(K_LEFT), 0); - return; - case KVAL(K_P6): - k_cur(vc, KVAL(K_RIGHT), 0); - return; - case KVAL(K_P7): - k_fn(vc, KVAL(K_FIND), 0); - return; - case KVAL(K_P8): - k_cur(vc, KVAL(K_UP), 0); - return; - case KVAL(K_P9): - k_fn(vc, KVAL(K_PGUP), 0); - return; - case KVAL(K_P5): - applkey(vc, 'G', vc_kbd_mode(kbd, VC_APPLIC)); - return; - } - } - - put_queue(vc, pad_chars[value]); - if (value == KVAL(K_PENTER) && vc_kbd_mode(kbd, VC_CRLF)) - put_queue(vc, 10); -} - -static void k_shift(struct vc_data *vc, unsigned char value, char up_flag) -{ - int old_state = shift_state; - - if (rep) - return; - /* - * Mimic typewriter: - * a CapsShift key acts like Shift but undoes CapsLock - */ - if (value == KVAL(K_CAPSSHIFT)) { - value = KVAL(K_SHIFT); - if (!up_flag) - clr_vc_kbd_led(kbd, VC_CAPSLOCK); - } - - if (up_flag) { - /* - * handle the case that two shift or control - * keys are depressed simultaneously - */ - if (shift_down[value]) - shift_down[value]--; - } else - shift_down[value]++; - - if (shift_down[value]) - shift_state |= (1 << value); - else - shift_state &= ~(1 << value); - - /* kludge */ - if (up_flag && shift_state != old_state && npadch != -1) { - if (kbd->kbdmode == VC_UNICODE) - to_utf8(vc, npadch); - else - put_queue(vc, npadch & 0xff); - npadch = -1; - } -} - -static void k_meta(struct vc_data *vc, unsigned char value, char up_flag) -{ - if (up_flag) - return; - - if (vc_kbd_mode(kbd, VC_META)) { - put_queue(vc, '\033'); - put_queue(vc, value); - } else - put_queue(vc, value | 0x80); -} - -static void k_ascii(struct vc_data *vc, unsigned char value, char up_flag) -{ - int base; - - if (up_flag) - return; - - if (value < 10) { - /* decimal input of code, while Alt depressed */ - base = 10; - } else { - /* hexadecimal input of code, while AltGr depressed */ - value -= 10; - base = 16; - } - - if (npadch == -1) - npadch = value; - else - npadch = npadch * base + value; -} - -static void k_lock(struct vc_data *vc, unsigned char value, char up_flag) -{ - if (up_flag || rep) - return; - - chg_vc_kbd_lock(kbd, value); -} - -static void k_slock(struct vc_data *vc, unsigned char value, char up_flag) -{ - k_shift(vc, value, up_flag); - if (up_flag || rep) - return; - - chg_vc_kbd_slock(kbd, value); - /* try to make Alt, oops, AltGr and such work */ - if (!key_maps[kbd->lockstate ^ kbd->slockstate]) { - kbd->slockstate = 0; - chg_vc_kbd_slock(kbd, value); - } -} - -/* by default, 300ms interval for combination release */ -static unsigned brl_timeout = 300; -MODULE_PARM_DESC(brl_timeout, "Braille keys release delay in ms (0 for commit on first key release)"); -module_param(brl_timeout, uint, 0644); - -static unsigned brl_nbchords = 1; -MODULE_PARM_DESC(brl_nbchords, "Number of chords that produce a braille pattern (0 for dead chords)"); -module_param(brl_nbchords, uint, 0644); - -static void k_brlcommit(struct vc_data *vc, unsigned int pattern, char up_flag) -{ - static unsigned long chords; - static unsigned committed; - - if (!brl_nbchords) - k_deadunicode(vc, BRL_UC_ROW | pattern, up_flag); - else { - committed |= pattern; - chords++; - if (chords == brl_nbchords) { - k_unicode(vc, BRL_UC_ROW | committed, up_flag); - chords = 0; - committed = 0; - } - } -} - -static void k_brl(struct vc_data *vc, unsigned char value, char up_flag) -{ - static unsigned pressed, committing; - static unsigned long releasestart; - - if (kbd->kbdmode != VC_UNICODE) { - if (!up_flag) - pr_warning("keyboard mode must be unicode for braille patterns\n"); - return; - } - - if (!value) { - k_unicode(vc, BRL_UC_ROW, up_flag); - return; - } - - if (value > 8) - return; - - if (!up_flag) { - pressed |= 1 << (value - 1); - if (!brl_timeout) - committing = pressed; - } else if (brl_timeout) { - if (!committing || - time_after(jiffies, - releasestart + msecs_to_jiffies(brl_timeout))) { - committing = pressed; - releasestart = jiffies; - } - pressed &= ~(1 << (value - 1)); - if (!pressed && committing) { - k_brlcommit(vc, committing, 0); - committing = 0; - } - } else { - if (committing) { - k_brlcommit(vc, committing, 0); - committing = 0; - } - pressed &= ~(1 << (value - 1)); - } -} - -/* - * The leds display either (i) the status of NumLock, CapsLock, ScrollLock, - * or (ii) whatever pattern of lights people want to show using KDSETLED, - * or (iii) specified bits of specified words in kernel memory. - */ -unsigned char getledstate(void) -{ - return ledstate; -} - -void setledstate(struct kbd_struct *kbd, unsigned int led) -{ - if (!(led & ~7)) { - ledioctl = led; - kbd->ledmode = LED_SHOW_IOCTL; - } else - kbd->ledmode = LED_SHOW_FLAGS; - - set_leds(); -} - -static inline unsigned char getleds(void) -{ - struct kbd_struct *kbd = kbd_table + fg_console; - unsigned char leds; - int i; - - if (kbd->ledmode == LED_SHOW_IOCTL) - return ledioctl; - - leds = kbd->ledflagstate; - - if (kbd->ledmode == LED_SHOW_MEM) { - for (i = 0; i < 3; i++) - if (ledptrs[i].valid) { - if (*ledptrs[i].addr & ledptrs[i].mask) - leds |= (1 << i); - else - leds &= ~(1 << i); - } - } - return leds; -} - -static int kbd_update_leds_helper(struct input_handle *handle, void *data) -{ - unsigned char leds = *(unsigned char *)data; - - if (test_bit(EV_LED, handle->dev->evbit)) { - input_inject_event(handle, EV_LED, LED_SCROLLL, !!(leds & 0x01)); - input_inject_event(handle, EV_LED, LED_NUML, !!(leds & 0x02)); - input_inject_event(handle, EV_LED, LED_CAPSL, !!(leds & 0x04)); - input_inject_event(handle, EV_SYN, SYN_REPORT, 0); - } - - return 0; -} - -/* - * This is the tasklet that updates LED state on all keyboards - * attached to the box. The reason we use tasklet is that we - * need to handle the scenario when keyboard handler is not - * registered yet but we already getting updates form VT to - * update led state. - */ -static void kbd_bh(unsigned long dummy) -{ - unsigned char leds = getleds(); - - if (leds != ledstate) { - input_handler_for_each_handle(&kbd_handler, &leds, - kbd_update_leds_helper); - ledstate = leds; - } -} - -DECLARE_TASKLET_DISABLED(keyboard_tasklet, kbd_bh, 0); - -#if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_ALPHA) ||\ - defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_SPARC) ||\ - defined(CONFIG_PARISC) || defined(CONFIG_SUPERH) ||\ - (defined(CONFIG_ARM) && defined(CONFIG_KEYBOARD_ATKBD) && !defined(CONFIG_ARCH_RPC)) ||\ - defined(CONFIG_AVR32) - -#define HW_RAW(dev) (test_bit(EV_MSC, dev->evbit) && test_bit(MSC_RAW, dev->mscbit) &&\ - ((dev)->id.bustype == BUS_I8042) && ((dev)->id.vendor == 0x0001) && ((dev)->id.product == 0x0001)) - -static const unsigned short x86_keycodes[256] = - { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, - 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, - 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, - 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, - 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, - 80, 81, 82, 83, 84,118, 86, 87, 88,115,120,119,121,112,123, 92, - 284,285,309, 0,312, 91,327,328,329,331,333,335,336,337,338,339, - 367,288,302,304,350, 89,334,326,267,126,268,269,125,347,348,349, - 360,261,262,263,268,376,100,101,321,316,373,286,289,102,351,355, - 103,104,105,275,287,279,258,106,274,107,294,364,358,363,362,361, - 291,108,381,281,290,272,292,305,280, 99,112,257,306,359,113,114, - 264,117,271,374,379,265,266, 93, 94, 95, 85,259,375,260, 90,116, - 377,109,111,277,278,282,283,295,296,297,299,300,301,293,303,307, - 308,310,313,314,315,317,318,319,320,357,322,323,324,325,276,330, - 332,340,365,342,343,344,345,346,356,270,341,368,369,370,371,372 }; - -#ifdef CONFIG_SPARC -static int sparc_l1_a_state; -extern void sun_do_break(void); -#endif - -static int emulate_raw(struct vc_data *vc, unsigned int keycode, - unsigned char up_flag) -{ - int code; - - switch (keycode) { - - case KEY_PAUSE: - put_queue(vc, 0xe1); - put_queue(vc, 0x1d | up_flag); - put_queue(vc, 0x45 | up_flag); - break; - - case KEY_HANGEUL: - if (!up_flag) - put_queue(vc, 0xf2); - break; - - case KEY_HANJA: - if (!up_flag) - put_queue(vc, 0xf1); - break; - - case KEY_SYSRQ: - /* - * Real AT keyboards (that's what we're trying - * to emulate here emit 0xe0 0x2a 0xe0 0x37 when - * pressing PrtSc/SysRq alone, but simply 0x54 - * when pressing Alt+PrtSc/SysRq. - */ - if (test_bit(KEY_LEFTALT, key_down) || - test_bit(KEY_RIGHTALT, key_down)) { - put_queue(vc, 0x54 | up_flag); - } else { - put_queue(vc, 0xe0); - put_queue(vc, 0x2a | up_flag); - put_queue(vc, 0xe0); - put_queue(vc, 0x37 | up_flag); - } - break; - - default: - if (keycode > 255) - return -1; - - code = x86_keycodes[keycode]; - if (!code) - return -1; - - if (code & 0x100) - put_queue(vc, 0xe0); - put_queue(vc, (code & 0x7f) | up_flag); - - break; - } - - return 0; -} - -#else - -#define HW_RAW(dev) 0 - -static int emulate_raw(struct vc_data *vc, unsigned int keycode, unsigned char up_flag) -{ - if (keycode > 127) - return -1; - - put_queue(vc, keycode | up_flag); - return 0; -} -#endif - -static void kbd_rawcode(unsigned char data) -{ - struct vc_data *vc = vc_cons[fg_console].d; - - kbd = kbd_table + vc->vc_num; - if (kbd->kbdmode == VC_RAW) - put_queue(vc, data); -} - -static void kbd_keycode(unsigned int keycode, int down, int hw_raw) -{ - struct vc_data *vc = vc_cons[fg_console].d; - unsigned short keysym, *key_map; - unsigned char type; - bool raw_mode; - struct tty_struct *tty; - int shift_final; - struct keyboard_notifier_param param = { .vc = vc, .value = keycode, .down = down }; - int rc; - - tty = vc->port.tty; - - if (tty && (!tty->driver_data)) { - /* No driver data? Strange. Okay we fix it then. */ - tty->driver_data = vc; - } - - kbd = kbd_table + vc->vc_num; - -#ifdef CONFIG_SPARC - if (keycode == KEY_STOP) - sparc_l1_a_state = down; -#endif - - rep = (down == 2); - - raw_mode = (kbd->kbdmode == VC_RAW); - if (raw_mode && !hw_raw) - if (emulate_raw(vc, keycode, !down << 7)) - if (keycode < BTN_MISC && printk_ratelimit()) - pr_warning("can't emulate rawmode for keycode %d\n", - keycode); - -#ifdef CONFIG_SPARC - if (keycode == KEY_A && sparc_l1_a_state) { - sparc_l1_a_state = false; - sun_do_break(); - } -#endif - - if (kbd->kbdmode == VC_MEDIUMRAW) { - /* - * This is extended medium raw mode, with keys above 127 - * encoded as 0, high 7 bits, low 7 bits, with the 0 bearing - * the 'up' flag if needed. 0 is reserved, so this shouldn't - * interfere with anything else. The two bytes after 0 will - * always have the up flag set not to interfere with older - * applications. This allows for 16384 different keycodes, - * which should be enough. - */ - if (keycode < 128) { - put_queue(vc, keycode | (!down << 7)); - } else { - put_queue(vc, !down << 7); - put_queue(vc, (keycode >> 7) | 0x80); - put_queue(vc, keycode | 0x80); - } - raw_mode = true; - } - - if (down) - set_bit(keycode, key_down); - else - clear_bit(keycode, key_down); - - if (rep && - (!vc_kbd_mode(kbd, VC_REPEAT) || - (tty && !L_ECHO(tty) && tty_chars_in_buffer(tty)))) { - /* - * Don't repeat a key if the input buffers are not empty and the - * characters get aren't echoed locally. This makes key repeat - * usable with slow applications and under heavy loads. - */ - return; - } - - param.shift = shift_final = (shift_state | kbd->slockstate) ^ kbd->lockstate; - param.ledstate = kbd->ledflagstate; - key_map = key_maps[shift_final]; - - rc = atomic_notifier_call_chain(&keyboard_notifier_list, - KBD_KEYCODE, ¶m); - if (rc == NOTIFY_STOP || !key_map) { - atomic_notifier_call_chain(&keyboard_notifier_list, - KBD_UNBOUND_KEYCODE, ¶m); - compute_shiftstate(); - kbd->slockstate = 0; - return; - } - - if (keycode < NR_KEYS) - keysym = key_map[keycode]; - else if (keycode >= KEY_BRL_DOT1 && keycode <= KEY_BRL_DOT8) - keysym = U(K(KT_BRL, keycode - KEY_BRL_DOT1 + 1)); - else - return; - - type = KTYP(keysym); - - if (type < 0xf0) { - param.value = keysym; - rc = atomic_notifier_call_chain(&keyboard_notifier_list, - KBD_UNICODE, ¶m); - if (rc != NOTIFY_STOP) - if (down && !raw_mode) - to_utf8(vc, keysym); - return; - } - - type -= 0xf0; - - if (type == KT_LETTER) { - type = KT_LATIN; - if (vc_kbd_led(kbd, VC_CAPSLOCK)) { - key_map = key_maps[shift_final ^ (1 << KG_SHIFT)]; - if (key_map) - keysym = key_map[keycode]; - } - } - - param.value = keysym; - rc = atomic_notifier_call_chain(&keyboard_notifier_list, - KBD_KEYSYM, ¶m); - if (rc == NOTIFY_STOP) - return; - - if (raw_mode && type != KT_SPEC && type != KT_SHIFT) - return; - - (*k_handler[type])(vc, keysym & 0xff, !down); - - param.ledstate = kbd->ledflagstate; - atomic_notifier_call_chain(&keyboard_notifier_list, KBD_POST_KEYSYM, ¶m); - - if (type != KT_SLOCK) - kbd->slockstate = 0; -} - -static void kbd_event(struct input_handle *handle, unsigned int event_type, - unsigned int event_code, int value) -{ - /* We are called with interrupts disabled, just take the lock */ - spin_lock(&kbd_event_lock); - - if (event_type == EV_MSC && event_code == MSC_RAW && HW_RAW(handle->dev)) - kbd_rawcode(value); - if (event_type == EV_KEY) - kbd_keycode(event_code, value, HW_RAW(handle->dev)); - - spin_unlock(&kbd_event_lock); - - tasklet_schedule(&keyboard_tasklet); - do_poke_blanked_console = 1; - schedule_console_callback(); -} - -static bool kbd_match(struct input_handler *handler, struct input_dev *dev) -{ - int i; - - if (test_bit(EV_SND, dev->evbit)) - return true; - - if (test_bit(EV_KEY, dev->evbit)) { - for (i = KEY_RESERVED; i < BTN_MISC; i++) - if (test_bit(i, dev->keybit)) - return true; - for (i = KEY_BRL_DOT1; i <= KEY_BRL_DOT10; i++) - if (test_bit(i, dev->keybit)) - return true; - } - - return false; -} - -/* - * When a keyboard (or other input device) is found, the kbd_connect - * function is called. The function then looks at the device, and if it - * likes it, it can open it and get events from it. In this (kbd_connect) - * function, we should decide which VT to bind that keyboard to initially. - */ -static int kbd_connect(struct input_handler *handler, struct input_dev *dev, - const struct input_device_id *id) -{ - struct input_handle *handle; - int error; - - handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL); - if (!handle) - return -ENOMEM; - - handle->dev = dev; - handle->handler = handler; - handle->name = "kbd"; - - error = input_register_handle(handle); - if (error) - goto err_free_handle; - - error = input_open_device(handle); - if (error) - goto err_unregister_handle; - - return 0; - - err_unregister_handle: - input_unregister_handle(handle); - err_free_handle: - kfree(handle); - return error; -} - -static void kbd_disconnect(struct input_handle *handle) -{ - input_close_device(handle); - input_unregister_handle(handle); - kfree(handle); -} - -/* - * Start keyboard handler on the new keyboard by refreshing LED state to - * match the rest of the system. - */ -static void kbd_start(struct input_handle *handle) -{ - tasklet_disable(&keyboard_tasklet); - - if (ledstate != 0xff) - kbd_update_leds_helper(handle, &ledstate); - - tasklet_enable(&keyboard_tasklet); -} - -static const struct input_device_id kbd_ids[] = { - { - .flags = INPUT_DEVICE_ID_MATCH_EVBIT, - .evbit = { BIT_MASK(EV_KEY) }, - }, - - { - .flags = INPUT_DEVICE_ID_MATCH_EVBIT, - .evbit = { BIT_MASK(EV_SND) }, - }, - - { }, /* Terminating entry */ -}; - -MODULE_DEVICE_TABLE(input, kbd_ids); - -static struct input_handler kbd_handler = { - .event = kbd_event, - .match = kbd_match, - .connect = kbd_connect, - .disconnect = kbd_disconnect, - .start = kbd_start, - .name = "kbd", - .id_table = kbd_ids, -}; - -int __init kbd_init(void) -{ - int i; - int error; - - for (i = 0; i < MAX_NR_CONSOLES; i++) { - kbd_table[i].ledflagstate = KBD_DEFLEDS; - kbd_table[i].default_ledflagstate = KBD_DEFLEDS; - kbd_table[i].ledmode = LED_SHOW_FLAGS; - kbd_table[i].lockstate = KBD_DEFLOCK; - kbd_table[i].slockstate = 0; - kbd_table[i].modeflags = KBD_DEFMODE; - kbd_table[i].kbdmode = default_utf8 ? VC_UNICODE : VC_XLATE; - } - - error = input_register_handler(&kbd_handler); - if (error) - return error; - - tasklet_enable(&keyboard_tasklet); - tasklet_schedule(&keyboard_tasklet); - - return 0; -} |