diff options
Diffstat (limited to 'drivers/char/keyboard.c')
| -rw-r--r-- | drivers/char/keyboard.c | 1255 |
1 files changed, 0 insertions, 1255 deletions
diff --git a/drivers/char/keyboard.c b/drivers/char/keyboard.c deleted file mode 100644 index 8b603b2d1c4..00000000000 --- a/drivers/char/keyboard.c +++ /dev/null @@ -1,1255 +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) - */ - -#include <linux/config.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/kbd_kern.h> -#include <linux/kbd_diacr.h> -#include <linux/vt_kern.h> -#include <linux/sysrq.h> -#include <linux/input.h> - -static void kbd_disconnect(struct input_handle *handle); -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_ignore, k_ignore - -typedef void (k_handler_fn)(struct vc_data *vc, unsigned char value, - char up_flag, struct pt_regs *regs); -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, struct pt_regs *regs); -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 -}; - -const int NR_TYPES = ARRAY_SIZE(max_vals); - -struct kbd_struct kbd_table[MAX_NR_CONSOLES]; -static struct kbd_struct *kbd = kbd_table; -static struct kbd_struct kbd0; - -int spawnpid, spawnsig; - -/* - * Variables exported for vt.c - */ - -int shift_state = 0; - -/* - * Internal Data. - */ - -static struct input_handler kbd_handler; -static unsigned long key_down[NBITS(KEY_MAX)]; /* keyboard key bitmap */ -static unsigned char shift_down[NR_SHIFT]; /* shift state counters.. */ -static int dead_key_next; -static int npadch = -1; /* -1 or number assembled on pad */ -static unsigned char 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]; - -/* Simple translation table for the SysRq keys */ - -#ifdef CONFIG_MAGIC_SYSRQ -unsigned char kbd_sysrq_xlate[KEY_MAX + 1] = - "\000\0331234567890-=\177\t" /* 0x00 - 0x0f */ - "qwertyuiop[]\r\000as" /* 0x10 - 0x1f */ - "dfghjkl;'`\000\\zxcv" /* 0x20 - 0x2f */ - "bnm,./\000*\000 \000\201\202\203\204\205" /* 0x30 - 0x3f */ - "\206\207\210\211\212\000\000789-456+1" /* 0x40 - 0x4f */ - "230\177\000\000\213\214\000\000\000\000\000\000\000\000\000\000" /* 0x50 - 0x5f */ - "\r\000/"; /* 0x60 - 0x6f */ -static int sysrq_down; -#endif -static int sysrq_alt; - -/* - * Translation of scancodes to keycodes. We set them on only the first attached - * keyboard - for per-keyboard setting, /dev/input/event is more useful. - */ -int getkeycode(unsigned int scancode) -{ - struct list_head *node; - struct input_dev *dev = NULL; - - list_for_each(node, &kbd_handler.h_list) { - struct input_handle *handle = to_handle_h(node); - if (handle->dev->keycodesize) { - dev = handle->dev; - break; - } - } - - if (!dev) - return -ENODEV; - - if (scancode >= dev->keycodemax) - return -EINVAL; - - return INPUT_KEYCODE(dev, scancode); -} - -int setkeycode(unsigned int scancode, unsigned int keycode) -{ - struct list_head *node; - struct input_dev *dev = NULL; - unsigned int i, oldkey; - - list_for_each(node, &kbd_handler.h_list) { - struct input_handle *handle = to_handle_h(node); - if (handle->dev->keycodesize) { - dev = handle->dev; - break; - } - } - - if (!dev) - return -ENODEV; - - if (scancode >= dev->keycodemax) - return -EINVAL; - if (keycode < 0 || keycode > KEY_MAX) - return -EINVAL; - if (dev->keycodesize < sizeof(keycode) && (keycode >> (dev->keycodesize * 8))) - return -EINVAL; - - oldkey = SET_INPUT_KEYCODE(dev, scancode, keycode); - - clear_bit(oldkey, dev->keybit); - set_bit(keycode, dev->keybit); - - for (i = 0; i < dev->keycodemax; i++) - if (INPUT_KEYCODE(dev,i) == oldkey) - set_bit(oldkey, dev->keybit); - - return 0; -} - -/* - * Making beeps and bells. - */ -static void kd_nosound(unsigned long ignored) -{ - struct list_head *node; - - list_for_each(node,&kbd_handler.h_list) { - struct input_handle *handle = to_handle_h(node); - if (test_bit(EV_SND, handle->dev->evbit)) { - if (test_bit(SND_TONE, handle->dev->sndbit)) - input_event(handle->dev, EV_SND, SND_TONE, 0); - if (test_bit(SND_BELL, handle->dev->sndbit)) - input_event(handle->dev, EV_SND, SND_BELL, 0); - } - } -} - -static DEFINE_TIMER(kd_mksound_timer, kd_nosound, 0, 0); - -void kd_mksound(unsigned int hz, unsigned int ticks) -{ - struct list_head *node; - - del_timer(&kd_mksound_timer); - - if (hz) { - list_for_each_prev(node, &kbd_handler.h_list) { - struct input_handle *handle = to_handle_h(node); - if (test_bit(EV_SND, handle->dev->evbit)) { - if (test_bit(SND_TONE, handle->dev->sndbit)) { - input_event(handle->dev, EV_SND, SND_TONE, hz); - break; - } - if (test_bit(SND_BELL, handle->dev->sndbit)) { - input_event(handle->dev, EV_SND, SND_BELL, 1); - break; - } - } - } - if (ticks) - mod_timer(&kd_mksound_timer, jiffies + ticks); - } else - kd_nosound(0); -} - -/* - * Setting the keyboard rate. - */ - -int kbd_rate(struct kbd_repeat *rep) -{ - struct list_head *node; - unsigned int d = 0; - unsigned int p = 0; - - list_for_each(node,&kbd_handler.h_list) { - struct input_handle *handle = to_handle_h(node); - struct input_dev *dev = handle->dev; - - if (test_bit(EV_REP, dev->evbit)) { - if (rep->delay > 0) - input_event(dev, EV_REP, REP_DELAY, rep->delay); - if (rep->period > 0) - input_event(dev, EV_REP, REP_PERIOD, rep->period); - d = dev->rep[REP_DELAY]; - p = dev->rep[REP_PERIOD]; - } - } - rep->delay = d; - rep->period = p; - return 0; -} - -/* - * Helper Functions. - */ -static void put_queue(struct vc_data *vc, int ch) -{ - struct tty_struct *tty = vc->vc_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->vc_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. UTF-8 is defined for words of up to 31 bits, - * but we need only 16 bits here - */ -static void to_utf8(struct vc_data *vc, ushort 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 { - /* 1110**** 10****** 10****** */ - put_queue(vc, 0xe0 | (c >> 12)); - 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 char handle_diacr(struct vc_data *vc, unsigned char ch) -{ - int d = diacr; - unsigned int i; - - diacr = 0; - - 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 == d) - return d; - - put_queue(vc, d); - return ch; -} - -/* - * Special function handlers - */ -static void fn_enter(struct vc_data *vc, struct pt_regs *regs) -{ - if (diacr) { - put_queue(vc, diacr); - 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, struct pt_regs *regs) -{ - if (rep) - return; - chg_vc_kbd_led(kbd, VC_CAPSLOCK); -} - -static void fn_caps_on(struct vc_data *vc, struct pt_regs *regs) -{ - if (rep) - return; - set_vc_kbd_led(kbd, VC_CAPSLOCK); -} - -static void fn_show_ptregs(struct vc_data *vc, struct pt_regs *regs) -{ - if (regs) - show_regs(regs); -} - -static void fn_hold(struct vc_data *vc, struct pt_regs *regs) -{ - struct tty_struct *tty = vc->vc_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, struct pt_regs *regs) -{ - if (vc_kbd_mode(kbd,VC_APPLIC)) - applkey(vc, 'P', 1); - else - fn_bare_num(vc, regs); -} - -/* - * 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, struct pt_regs *regs) -{ - if (!rep) - chg_vc_kbd_led(kbd, VC_NUMLOCK); -} - -static void fn_lastcons(struct vc_data *vc, struct pt_regs *regs) -{ - /* switch to the last used console, ChN */ - set_console(last_console); -} - -static void fn_dec_console(struct vc_data *vc, struct pt_regs *regs) -{ - 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, struct pt_regs *regs) -{ - 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 pt_regs *regs) -{ - struct tty_struct *tty = vc->vc_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, struct pt_regs *regs) -{ - scrollfront(vc, 0); -} - -static void fn_scroll_back(struct vc_data *vc, struct pt_regs *regs) -{ - scrollback(vc, 0); -} - -static void fn_show_mem(struct vc_data *vc, struct pt_regs *regs) -{ - show_mem(); -} - -static void fn_show_state(struct vc_data *vc, struct pt_regs *regs) -{ - show_state(); -} - -static void fn_boot_it(struct vc_data *vc, struct pt_regs *regs) -{ - ctrl_alt_del(); -} - -static void fn_compose(struct vc_data *vc, struct pt_regs *regs) -{ - dead_key_next = 1; -} - -static void fn_spawn_con(struct vc_data *vc, struct pt_regs *regs) -{ - if (spawnpid) - if (kill_proc(spawnpid, spawnsig, 1)) - spawnpid = 0; -} - -static void fn_SAK(struct vc_data *vc, struct pt_regs *regs) -{ - struct tty_struct *tty = vc->vc_tty; - - /* - * SAK should also work in all raw modes and reset - * them properly. - */ - if (tty) - do_SAK(tty); - reset_vc(vc); -} - -static void fn_null(struct vc_data *vc, struct pt_regs *regs) -{ - compute_shiftstate(); -} - -/* - * Special key handlers - */ -static void k_ignore(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs) -{ -} - -static void k_spec(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs) -{ - 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, regs); -} - -static void k_lowercase(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs) -{ - printk(KERN_ERR "keyboard.c: k_lowercase was called - impossible\n"); -} - -static void k_self(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs) -{ - 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 = 0; - diacr = value; - return; - } - put_queue(vc, value); -} - -/* - * Handle dead key. Note that we now may have several - * dead keys modifying the same character. Very useful - * for Vietnamese. - */ -static void k_dead2(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs) -{ - if (up_flag) - return; - diacr = (diacr ? handle_diacr(vc, value) : value); -} - -/* - * Obsolete - for backwards compatibility only - */ -static void k_dead(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs) -{ - static unsigned char ret_diacr[NR_DEAD] = {'`', '\'', '^', '~', '"', ',' }; - value = ret_diacr[value]; - k_dead2(vc, value, up_flag, regs); -} - -static void k_cons(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs) -{ - if (up_flag) - return; - set_console(value); -} - -static void k_fn(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs) -{ - unsigned v; - - if (up_flag) - return; - v = value; - if (v < ARRAY_SIZE(func_table)) { - if (func_table[value]) - puts_queue(vc, func_table[value]); - } else - printk(KERN_ERR "k_fn called with value=%d\n", value); -} - -static void k_cur(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs) -{ - 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, struct pt_regs *regs) -{ - 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, regs); - return; - case KVAL(K_P0): - k_fn(vc, KVAL(K_INSERT), 0, regs); - return; - case KVAL(K_P1): - k_fn(vc, KVAL(K_SELECT), 0, regs); - return; - case KVAL(K_P2): - k_cur(vc, KVAL(K_DOWN), 0, regs); - return; - case KVAL(K_P3): - k_fn(vc, KVAL(K_PGDN), 0, regs); - return; - case KVAL(K_P4): - k_cur(vc, KVAL(K_LEFT), 0, regs); - return; - case KVAL(K_P6): - k_cur(vc, KVAL(K_RIGHT), 0, regs); - return; - case KVAL(K_P7): - k_fn(vc, KVAL(K_FIND), 0, regs); - return; - case KVAL(K_P8): - k_cur(vc, KVAL(K_UP), 0, regs); - return; - case KVAL(K_P9): - k_fn(vc, KVAL(K_PGUP), 0, regs); - 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, struct pt_regs *regs) -{ - 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 & 0xffff); - else - put_queue(vc, npadch & 0xff); - npadch = -1; - } -} - -static void k_meta(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs) -{ - 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, struct pt_regs *regs) -{ - 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, struct pt_regs *regs) -{ - 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, struct pt_regs *regs) -{ - k_shift(vc, value, up_flag, regs); - 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); - } -} - -/* - * 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; -} - -/* - * This routine is the bottom half of the keyboard interrupt - * routine, and runs with all interrupts enabled. It does - * console changing, led setting and copy_to_cooked, which can - * take a reasonably long time. - * - * Aside from timing (which isn't really that important for - * keyboard interrupts as they happen often), using the software - * interrupt routines for this thing allows us to easily mask - * this when we don't want any of the above to happen. - * This allows for easy and efficient race-condition prevention - * for kbd_refresh_leds => input_event(dev, EV_LED, ...) => ... - */ - -static void kbd_bh(unsigned long dummy) -{ - struct list_head *node; - unsigned char leds = getleds(); - - if (leds != ledstate) { - list_for_each(node, &kbd_handler.h_list) { - struct input_handle * handle = to_handle_h(node); - input_event(handle->dev, EV_LED, LED_SCROLLL, !!(leds & 0x01)); - input_event(handle->dev, EV_LED, LED_NUML, !!(leds & 0x02)); - input_event(handle->dev, EV_LED, LED_CAPSL, !!(leds & 0x04)); - input_sync(handle->dev); - } - } - - ledstate = leds; -} - -DECLARE_TASKLET_DISABLED(keyboard_tasklet, kbd_bh, 0); - -/* - * This allows a newly plugged keyboard to pick the LED state. - */ -static void kbd_refresh_leds(struct input_handle *handle) -{ - unsigned char leds = ledstate; - - tasklet_disable(&keyboard_tasklet); - if (leds != 0xff) { - input_event(handle->dev, EV_LED, LED_SCROLLL, !!(leds & 0x01)); - input_event(handle->dev, EV_LED, LED_NUML, !!(leds & 0x02)); - input_event(handle->dev, EV_LED, LED_CAPSL, !!(leds & 0x04)); - input_sync(handle->dev); - } - tasklet_enable(&keyboard_tasklet); -} - -#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)) - -#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 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, - 284,285,309,298,312, 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, - 103,104,105,275,287,279,306,106,274,107,294,364,358,363,362,361, - 291,108,381,281,290,272,292,305,280, 99,112,257,258,359,113,114, - 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_MAC_EMUMOUSEBTN -extern int mac_hid_mouse_emulate_buttons(int, int, int); -#endif /* CONFIG_MAC_EMUMOUSEBTN */ - -#ifdef CONFIG_SPARC -static int sparc_l1_a_state = 0; -extern void sun_do_break(void); -#endif - -static int emulate_raw(struct vc_data *vc, unsigned int keycode, - unsigned char up_flag) -{ - if (keycode > 255 || !x86_keycodes[keycode]) - return -1; - - switch (keycode) { - case KEY_PAUSE: - put_queue(vc, 0xe1); - put_queue(vc, 0x1d | up_flag); - put_queue(vc, 0x45 | up_flag); - return 0; - case KEY_HANGUEL: - if (!up_flag) put_queue(vc, 0xf1); - return 0; - case KEY_HANJA: - if (!up_flag) put_queue(vc, 0xf2); - return 0; - } - - if (keycode == KEY_SYSRQ && sysrq_alt) { - put_queue(vc, 0x54 | up_flag); - return 0; - } - - if (x86_keycodes[keycode] & 0x100) - put_queue(vc, 0xe0); - - put_queue(vc, (x86_keycodes[keycode] & 0x7f) | up_flag); - - if (keycode == KEY_SYSRQ) { - put_queue(vc, 0xe0); - put_queue(vc, 0x37 | up_flag); - } - - return 0; -} - -#else - -#define HW_RAW(dev) 0 - -#warning "Cannot generate rawmode keyboard for your architecture yet." - -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 + fg_console; - if (kbd->kbdmode == VC_RAW) - put_queue(vc, data); -} - -static void kbd_keycode(unsigned int keycode, int down, - int hw_raw, struct pt_regs *regs) -{ - struct vc_data *vc = vc_cons[fg_console].d; - unsigned short keysym, *key_map; - unsigned char type, raw_mode; - struct tty_struct *tty; - int shift_final; - - tty = vc->vc_tty; - - if (tty && (!tty->driver_data)) { - /* No driver data? Strange. Okay we fix it then. */ - tty->driver_data = vc; - } - - kbd = kbd_table + fg_console; - - if (keycode == KEY_LEFTALT || keycode == KEY_RIGHTALT) - sysrq_alt = down; -#ifdef CONFIG_SPARC - if (keycode == KEY_STOP) - sparc_l1_a_state = down; -#endif - - rep = (down == 2); - -#ifdef CONFIG_MAC_EMUMOUSEBTN - if (mac_hid_mouse_emulate_buttons(1, keycode, down)) - return; -#endif /* CONFIG_MAC_EMUMOUSEBTN */ - - if ((raw_mode = (kbd->kbdmode == VC_RAW)) && !hw_raw) - if (emulate_raw(vc, keycode, !down << 7)) - if (keycode < BTN_MISC) - printk(KERN_WARNING "keyboard.c: can't emulate rawmode for keycode %d\n", keycode); - -#ifdef CONFIG_MAGIC_SYSRQ /* Handle the SysRq Hack */ - if (keycode == KEY_SYSRQ && (sysrq_down || (down == 1 && sysrq_alt))) { - sysrq_down = down; - return; - } - if (sysrq_down && down && !rep) { - handle_sysrq(kbd_sysrq_xlate[keycode], regs, tty); - return; - } -#endif -#ifdef CONFIG_SPARC - if (keycode == KEY_A && sparc_l1_a_state) { - sparc_l1_a_state = 0; - 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 = 1; - } - - 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->driver->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; - } - - shift_final = (shift_state | kbd->slockstate) ^ kbd->lockstate; - key_map = key_maps[shift_final]; - - if (!key_map) { - compute_shiftstate(); - kbd->slockstate = 0; - return; - } - - if (keycode > NR_KEYS) - return; - - keysym = key_map[keycode]; - type = KTYP(keysym); - - if (type < 0xf0) { - if (down && !raw_mode) - to_utf8(vc, keysym); - return; - } - - type -= 0xf0; - - if (raw_mode && type != KT_SPEC && type != KT_SHIFT) - return; - - 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]; - } - } - - (*k_handler[type])(vc, keysym & 0xff, !down, regs); - - 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) -{ - 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), handle->dev->regs); - tasklet_schedule(&keyboard_tasklet); - do_poke_blanked_console = 1; - schedule_console_callback(); -} - -/* - * 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 struct input_handle *kbd_connect(struct input_handler *handler, - struct input_dev *dev, - struct input_device_id *id) -{ - struct input_handle *handle; - int i; - - for (i = KEY_RESERVED; i < BTN_MISC; i++) - if (test_bit(i, dev->keybit)) - break; - - if (i == BTN_MISC && !test_bit(EV_SND, dev->evbit)) - return NULL; - - if (!(handle = kmalloc(sizeof(struct input_handle), GFP_KERNEL))) - return NULL; - memset(handle, 0, sizeof(struct input_handle)); - - handle->dev = dev; - handle->handler = handler; - handle->name = "kbd"; - - input_open_device(handle); - kbd_refresh_leds(handle); - - return handle; -} - -static void kbd_disconnect(struct input_handle *handle) -{ - input_close_device(handle); - kfree(handle); -} - -static struct input_device_id kbd_ids[] = { - { - .flags = INPUT_DEVICE_ID_MATCH_EVBIT, - .evbit = { BIT(EV_KEY) }, - }, - - { - .flags = INPUT_DEVICE_ID_MATCH_EVBIT, - .evbit = { BIT(EV_SND) }, - }, - - { }, /* Terminating entry */ -}; - -MODULE_DEVICE_TABLE(input, kbd_ids); - -static struct input_handler kbd_handler = { - .event = kbd_event, - .connect = kbd_connect, - .disconnect = kbd_disconnect, - .name = "kbd", - .id_table = kbd_ids, -}; - -int __init kbd_init(void) -{ - int i; - - kbd0.ledflagstate = kbd0.default_ledflagstate = KBD_DEFLEDS; - kbd0.ledmode = LED_SHOW_FLAGS; - kbd0.lockstate = KBD_DEFLOCK; - kbd0.slockstate = 0; - kbd0.modeflags = KBD_DEFMODE; - kbd0.kbdmode = VC_XLATE; - - for (i = 0 ; i < MAX_NR_CONSOLES ; i++) - kbd_table[i] = kbd0; - - input_register_handler(&kbd_handler); - - tasklet_enable(&keyboard_tasklet); - tasklet_schedule(&keyboard_tasklet); - - return 0; -} |