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Commit 996e34cc authored by James Simmons's avatar James Simmons
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Started to enforce a one to one relationship between struct tty_struct and... 

Started to enforce a one to one relationship between struct tty_struct and struct vc_data. It will make it easier to handle things.
parent e08ae34d
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Showing with 399 additions and 378 deletions
drivers/char/console.c
View file @ 996e34cc
......@@ -2382,6 +2382,7 @@ static int con_open(struct tty_struct *tty, struct file * filp)
vt_cons[currcons]->vc_num = currcons;
tty->driver_data = vt_cons[currcons];
vc_cons[currcons].d->vc_tty = tty;
if (!tty->winsize.ws_row && !tty->winsize.ws_col) {
tty->winsize.ws_row = video_num_lines;
......
drivers/char/keyboard.c
View file @ 996e34cc
......@@ -36,6 +36,7 @@
#include <asm/keyboard.h>
#include <asm/bitops.h>
#include <linux/console_struct.h>
#include <linux/kbd_kern.h>
#include <linux/kbd_diacr.h>
#include <linux/vt_kern.h>
......@@ -43,8 +44,14 @@
#include <linux/sysrq.h>
#include <linux/pm.h>
extern void ctrl_alt_del(void);
#define SIZE(x) (sizeof(x)/sizeof((x)[0]))
/*
* Exported functions/variables
*/
#ifndef KBD_DEFMODE
#define KBD_DEFMODE ((1 << VC_REPEAT) | (1 << VC_META))
#endif
......@@ -64,277 +71,121 @@
void (*kbd_ledfunc)(unsigned int led);
EXPORT_SYMBOL(handle_scancode);
EXPORT_SYMBOL(kbd_ledfunc);
extern void ctrl_alt_del(void);
struct console;
/* kbd_pt_regs - set by keyboard_interrupt(), used by show_ptregs() */
struct pt_regs * kbd_pt_regs;
void compute_shiftstate(void);
/*
* global state includes the following, and various static variables
* in this module: prev_scancode, shift_state, diacr, npadch, dead_key_next.
* (last_console is now a global variable)
* Handler Tables.
*/
/* shift state counters.. */
static unsigned char k_down[NR_SHIFT];
/* keyboard key bitmap */
static unsigned long key_down[256/BITS_PER_LONG];
static int dead_key_next;
/*
* In order to retrieve the shift_state (for the mouse server), either
* the variable must be global, or a new procedure must be created to
* return the value. I chose the former way.
*/
int shift_state;
static int npadch = -1; /* -1 or number assembled on pad */
static unsigned char diacr;
static char rep; /* flag telling character repeat */
struct kbd_struct kbd_table[MAX_NR_CONSOLES];
static struct tty_struct **ttytab;
static struct kbd_struct * kbd = kbd_table;
static struct tty_struct * tty;
void compute_shiftstate(void);
typedef void (*k_hand)(unsigned char value, char up_flag);
typedef void (k_handfn)(unsigned char value, char up_flag);
static k_handfn
do_self, do_fn, do_spec, do_pad, do_dead, do_cons, do_cur, do_shift,
do_meta, do_ascii, do_lock, do_lowercase, do_slock, do_dead2,
do_ignore;
static k_hand key_handler[16] = {
do_self, do_fn, do_spec, do_pad, do_dead, do_cons, do_cur, do_shift,
do_meta, do_ascii, do_lock, do_lowercase, do_slock, do_dead2,
do_ignore, do_ignore
};
/* Key types processed even in raw modes */
#define TYPES_ALLOWED_IN_RAW_MODE ((1 << KT_SPEC) | (1 << KT_SHIFT))
#define SPECIALS_ALLOWED_IN_RAW_MODE (1 << KVAL(K_SAK))
typedef void (*void_fnp)(void);
typedef void (void_fn)(void);
#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
static void_fn do_null, enter, show_ptregs, send_intr, lastcons, caps_toggle,
num, hold, scroll_forw, scroll_back, boot_it, caps_on, compose,
SAK, decr_console, incr_console, spawn_console, bare_num;
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 };
static void_fnp spec_fn_table[] = {
do_null, enter, show_ptregs, show_mem,
show_state, send_intr, lastcons, caps_toggle,
num, hold, scroll_forw, scroll_back,
boot_it, caps_on, compose, SAK,
decr_console, incr_console, spawn_console, bare_num
};
#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
#define SPECIALS_ALLOWED_IN_RAW_MODE (1 << KVAL(K_SAK))
typedef void (fn_handler_fn)(struct vc_data *vc);
static fn_handler_fn FN_HANDLERS;
static fn_handler_fn *fn_handler[] = { FN_HANDLERS };
/*
* Variables/functions exported for vt.c
*/
/* maximum values each key_handler can handle */
const int max_vals[] = {
255, SIZE(func_table) - 1, SIZE(spec_fn_table) - 1, NR_PAD - 1,
NR_DEAD - 1, 255, 3, NR_SHIFT - 1,
255, NR_ASCII - 1, NR_LOCK - 1, 255,
NR_LOCK - 1, 255
255, SIZE(func_table) - 1, 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 = SIZE(max_vals);
/* N.B. drivers/macintosh/mac_keyb.c needs to call put_queue */
void put_queue(int);
static unsigned char handle_diacr(unsigned char);
/* kbd_pt_regs - set by keyboard_interrupt(), used by show_ptregs() */
struct pt_regs * kbd_pt_regs;
#ifdef CONFIG_MAGIC_SYSRQ
static int sysrq_pressed;
#endif
static struct pm_dev *pm_kbd;
/*
* 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.
*/
void to_utf8(ushort c) {
if (c < 0x80)
put_queue(c); /* 0******* */
else if (c < 0x800) {
put_queue(0xc0 | (c >> 6)); /* 110***** 10****** */
put_queue(0x80 | (c & 0x3f));
} else {
put_queue(0xe0 | (c >> 12)); /* 1110**** 10****** 10****** */
put_queue(0x80 | ((c >> 6) & 0x3f));
put_queue(0x80 | (c & 0x3f));
}
/* UTF-8 is defined for words of up to 31 bits,
but we need only 16 bits here */
}
int spawnpid, spawnsig;
/*
* Translation of escaped scancodes to keycodes.
* This is now user-settable (for machines were it makes sense).
*/
int setkeycode(unsigned int scancode, unsigned int keycode)
{
return kbd_setkeycode(scancode, keycode);
}
int getkeycode(unsigned int scancode)
{
return kbd_getkeycode(scancode);
}
void handle_scancode(unsigned char scancode, int down)
int setkeycode(unsigned int scancode, unsigned int keycode)
{
unsigned char keycode;
char up_flag = down ? 0 : 0200;
char raw_mode;
pm_access(pm_kbd);
add_keyboard_randomness(scancode | up_flag);
tty = ttytab? ttytab[fg_console]: NULL;
if (tty && (!tty->driver_data)) {
/*
* We touch the tty structure via the ttytab array
* without knowing whether or not tty is open, which
* is inherently dangerous. We currently rely on that
* fact that console_open sets tty->driver_data when
* it opens it, and clears it when it closes it.
*/
tty = NULL;
}
kbd = kbd_table + fg_console;
if ((raw_mode = (kbd->kbdmode == VC_RAW))) {
put_queue(scancode | up_flag);
/* we do not return yet, because we want to maintain
the key_down array, so that we have the correct
values when finishing RAW mode or when changing VT's */
}
/*
* Convert scancode to keycode
*/
if (!kbd_translate(scancode, &keycode, raw_mode))
goto out;
return kbd_setkeycode(scancode, keycode);
}
/*
* At this point the variable `keycode' contains the keycode.
* Note: the keycode must not be 0 (++Geert: on m68k 0 is valid).
* We keep track of the up/down status of the key, and
* return the keycode if in MEDIUMRAW mode.
/*
* Variables/function exported for console.c
*/
int shift_state = 0;
if (up_flag) {
rep = 0;
if(!test_and_clear_bit(keycode, key_down))
up_flag = kbd_unexpected_up(keycode);
} else
rep = test_and_set_bit(keycode, key_down);
#ifdef CONFIG_MAGIC_SYSRQ /* Handle the SysRq Hack */
if (keycode == SYSRQ_KEY) {
sysrq_pressed = !up_flag;
goto out;
} else if (sysrq_pressed) {
if (!up_flag) {
handle_sysrq(kbd_sysrq_xlate[keycode], kbd_pt_regs, tty);
goto out;
}
}
#endif
if (kbd->kbdmode == VC_MEDIUMRAW) {
/* soon keycodes will require more than one byte */
put_queue(keycode + up_flag);
raw_mode = 1; /* Most key classes will be ignored */
}
/*
* Small change in philosophy: earlier we defined repetition by
* rep = keycode == prev_keycode;
* prev_keycode = keycode;
* but now by the fact that the depressed key was down already.
* Does this ever make a difference? Yes.
/*
* Internal Data.
*/
/*
* Repeat a key only if the input buffers are empty or the
* characters get echoed locally. This makes key repeat usable
* with slow applications and under heavy loads.
*/
if (!rep ||
(vc_kbd_mode(kbd,VC_REPEAT) && tty &&
(L_ECHO(tty) || (tty->driver.chars_in_buffer(tty) == 0)))) {
u_short keysym;
u_char type;
static unsigned long key_down[256/BITS_PER_LONG]; /* 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 */
pm_callback pm_kbd_request_override = NULL;
typedef void (pm_kbd_func) (void);
static struct pm_dev *pm_kbd;
/* the XOR below used to be an OR */
int shift_final = (shift_state | kbd->slockstate) ^
kbd->lockstate;
ushort *key_map = key_maps[shift_final];
static unsigned char ledstate = 0xff; /* undefined */
static unsigned char ledioctl;
if (key_map != NULL) {
keysym = key_map[keycode];
type = KTYP(keysym);
static struct ledptr {
unsigned int *addr;
unsigned int mask;
unsigned char valid:1;
} ledptrs[3];
if (type >= 0xf0) {
type -= 0xf0;
if (raw_mode && ! (TYPES_ALLOWED_IN_RAW_MODE & (1 << type)))
goto out;
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];
}
}
(*key_handler[type])(keysym & 0xff, up_flag);
if (type != KT_SLOCK)
kbd->slockstate = 0;
} else {
/* maybe only if (kbd->kbdmode == VC_UNICODE) ? */
if (!up_flag && !raw_mode)
to_utf8(keysym);
}
} else {
/* maybe beep? */
/* we have at least to update shift_state */
#if 1 /* how? two almost equivalent choices follow */
compute_shiftstate();
kbd->slockstate = 0; /* play it safe */
#else
keysym = U(plain_map[keycode]);
type = KTYP(keysym);
if (type == KT_SHIFT)
(*key_handler[type])(keysym & 0xff, up_flag);
struct kbd_struct kbd_table[MAX_NR_CONSOLES];
static struct kbd_struct *kbd = kbd_table;
#ifdef CONFIG_MAGIC_SYSRQ
static int sysrq_pressed;
#endif
}
}
out:
do_poke_blanked_console = 1;
schedule_console_callback();
}
void put_queue(int ch)
/*
* Helper Functions.
*/
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(char *cp)
static void puts_queue(struct vc_data *vc, char *cp)
{
struct tty_struct *tty = vc->vc_tty;
if (!tty)
return;
......@@ -345,48 +196,137 @@ static void puts_queue(char *cp)
con_schedule_flip(tty);
}
static void applkey(int key, char mode)
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(buf);
puts_queue(vc, buf);
}
static void enter(void)
/*
* 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
*/
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)
{
int i, j, sym, val;
shift_state = 0;
memset(shift_down, 0, sizeof(shift_down));
for (i = 0; i < SIZE(key_down); i += BITS_PER_LONG) {
if (!key_down[i / BITS_PER_LONG])
continue;
for (j = 0; j < BITS_PER_LONG; j++) {
if (!test_bit(i + j, key_down))
continue;
sym = U(plain_map[i + j]);
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.
*/
unsigned char handle_diacr(struct vc_data *vc, unsigned char ch)
{
int d = diacr;
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)
{
if (diacr) {
put_queue(diacr);
put_queue(vc, diacr);
diacr = 0;
}
put_queue(13);
if (vc_kbd_mode(kbd,VC_CRLF))
put_queue(10);
put_queue(vc, 13);
if (vc_kbd_mode(kbd, VC_CRLF))
put_queue(vc, 10);
}
static void caps_toggle(void)
static void fn_caps_toggle(struct vc_data *vc)
{
if (rep)
return;
chg_vc_kbd_led(kbd, VC_CAPSLOCK);
}
static void caps_on(void)
static void fn_caps_on(struct vc_data *vc)
{
if (rep)
return;
set_vc_kbd_led(kbd, VC_CAPSLOCK);
}
static void show_ptregs(void)
static void fn_show_ptregs(struct vc_data *vc)
{
if (kbd_pt_regs)
show_regs(kbd_pt_regs);
}
static void hold(void)
static void fn_hold(struct vc_data *vc)
{
struct tty_struct *tty = vc->vc_tty;
if (rep || !tty)
return;
......@@ -401,12 +341,12 @@ static void hold(void)
stop_tty(tty);
}
static void num(void)
static void fn_num(struct vc_data *vc)
{
if (vc_kbd_mode(kbd,VC_APPLIC))
applkey('P', 1);
applkey(vc, 'P', 1);
else
bare_num();
fn_bare_num(vc);
}
/*
......@@ -415,19 +355,19 @@ static void num(void)
* Bind this to NumLock if you prefer that the NumLock key always
* changes the NumLock flag.
*/
static void bare_num(void)
static void fn_bare_num(struct vc_data *vc)
{
if (!rep)
chg_vc_kbd_led(kbd,VC_NUMLOCK);
}
static void lastcons(void)
static void fn_lastcons(struct vc_data *vc)
{
/* switch to the last used console, ChN */
set_console(last_console);
}
static void decr_console(void)
static void fn_dec_console(struct vc_data *vc)
{
int i;
......@@ -440,7 +380,7 @@ static void decr_console(void)
set_console(i);
}
static void incr_console(void)
static void fn_inc_console(struct vc_data *vc)
{
int i;
......@@ -453,50 +393,62 @@ static void incr_console(void)
set_console(i);
}
static void send_intr(void)
static void fn_send_intr(struct vc_data *vc)
{
struct tty_struct *tty = vc->vc_tty;
if (!tty)
return;
tty_insert_flip_char(tty, 0, TTY_BREAK);
con_schedule_flip(tty);
}
static void scroll_forw(void)
static void fn_scroll_forw(struct vc_data *vc)
{
scrollfront(0);
}
static void scroll_back(void)
static void fn_scroll_back(struct vc_data *vc)
{
scrollback(0);
}
static void boot_it(void)
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 compose(void)
static void fn_compose(struct vc_data *vc)
{
dead_key_next = 1;
}
int spawnpid, spawnsig;
static void spawn_console(void)
static void fn_spawn_con(struct vc_data *vc)
{
if (spawnpid)
if(kill_proc(spawnpid, spawnsig, 1))
spawnpid = 0;
}
static void SAK(void)
static void fn_SAK(struct vc_data *vc)
{
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(fg_console);
#if 0
......@@ -504,47 +456,49 @@ static void SAK(void)
#endif
}
static void do_ignore(unsigned char value, char up_flag)
static void fn_null(struct vc_data *vc)
{
compute_shiftstate();
}
static void do_null()
/*
* Special key handlers
*/
static void k_ignore(struct vc_data *vc, unsigned char value, char up_flag)
{
compute_shiftstate();
}
static void do_spec(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 >= SIZE(spec_fn_table))
if (value >= SIZE(fn_handler))
return;
if ((kbd->kbdmode == VC_RAW || kbd->kbdmode == VC_MEDIUMRAW) &&
!(SPECIALS_ALLOWED_IN_RAW_MODE & (1 << value)))
return;
spec_fn_table[value]();
fn_handler[value](vc);
}
static void do_lowercase(unsigned char value, char up_flag)
static void k_lowercase(struct vc_data *vc, unsigned char value, char up_flag)
{
printk(KERN_ERR "keyboard.c: do_lowercase was called - impossible\n");
}
static void do_self(unsigned char value, char up_flag)
static void k_self(struct vc_data *vc, unsigned char value, char up_flag)
{
if (up_flag)
return; /* no action, if this is a key release */
if (diacr)
value = handle_diacr(value);
value = handle_diacr(vc, value);
if (dead_key_next) {
dead_key_next = 0;
diacr = value;
return;
}
put_queue(value);
put_queue(vc, value);
}
#define A_GRAVE '`'
......@@ -557,10 +511,10 @@ static unsigned char ret_diacr[NR_DEAD] =
{A_GRAVE, A_ACUTE, A_CFLEX, A_TILDE, A_DIAER, A_CEDIL };
/* Obsolete - for backwards compatibility only */
static void do_dead(unsigned char value, char up_flag)
static void k_dead(struct vc_data *vc, unsigned char value, char up_flag)
{
value = ret_diacr[value];
do_dead2(value,up_flag);
k_dead2(vc, value,up_flag);
}
/*
......@@ -568,60 +522,33 @@ static void do_dead(unsigned char value, char up_flag)
* dead keys modifying the same character. Very useful
* for Vietnamese.
*/
static void do_dead2(unsigned char value, char up_flag)
static void k_dead2(struct vc_data *vc, unsigned char value, char up_flag)
{
if (up_flag)
return;
diacr = (diacr ? handle_diacr(value) : value);
}
/*
* 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.
*/
unsigned char handle_diacr(unsigned char ch)
{
int d = diacr;
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(d);
return ch;
diacr = (diacr ? handle_diacr(vc, value) : value);
}
static void do_cons(unsigned char value, char 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 do_fn(unsigned char value, char up_flag)
static void k_fn(struct vc_data *vc, unsigned char value, char up_flag)
{
if (up_flag)
return;
if (value < SIZE(func_table)) {
if (func_table[value])
puts_queue(func_table[value]);
puts_queue(vc, func_table[value]);
} else
printk(KERN_ERR "do_fn called with value=%d\n", value);
printk(KERN_ERR "k_fn called with value=%d\n", value);
}
static void do_pad(unsigned char value, char up_flag)
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 = "pqrstuvwxylSRQMnnmPQ";
......@@ -630,8 +557,8 @@ static void do_pad(unsigned char value, char up_flag)
return; /* no action, if this is a key release */
/* kludge... shift forces cursor/number keys */
if (vc_kbd_mode(kbd,VC_APPLIC) && !k_down[KG_SHIFT]) {
applkey(app_map[value], 1);
if (vc_kbd_mode(kbd,VC_APPLIC) && !shift_down[KG_SHIFT]) {
applkey(vc, app_map[value], 1);
return;
}
......@@ -639,55 +566,55 @@ static void do_pad(unsigned char value, char up_flag)
switch (value) {
case KVAL(K_PCOMMA):
case KVAL(K_PDOT):
do_fn(KVAL(K_REMOVE), 0);
k_fn(vc, KVAL(K_REMOVE), 0);
return;
case KVAL(K_P0):
do_fn(KVAL(K_INSERT), 0);
k_fn(vc, KVAL(K_INSERT), 0);
return;
case KVAL(K_P1):
do_fn(KVAL(K_SELECT), 0);
k_fn(vc, KVAL(K_SELECT), 0);
return;
case KVAL(K_P2):
do_cur(KVAL(K_DOWN), 0);
k_cur(vc, KVAL(K_DOWN), 0);
return;
case KVAL(K_P3):
do_fn(KVAL(K_PGDN), 0);
k_fn(vc, KVAL(K_PGDN), 0);
return;
case KVAL(K_P4):
do_cur(KVAL(K_LEFT), 0);
k_cur(vc, KVAL(K_LEFT), 0);
return;
case KVAL(K_P6):
do_cur(KVAL(K_RIGHT), 0);
k_cur(vc, KVAL(K_RIGHT), 0);
return;
case KVAL(K_P7):
do_fn(KVAL(K_FIND), 0);
k_fn(vc, KVAL(K_FIND), 0);
return;
case KVAL(K_P8):
do_cur(KVAL(K_UP), 0);
k_cur(vc, KVAL(K_UP), 0);
return;
case KVAL(K_P9):
do_fn(KVAL(K_PGUP), 0);
k_fn(vc, KVAL(K_PGUP), 0);
return;
case KVAL(K_P5):
applkey('G', vc_kbd_mode(kbd, VC_APPLIC));
applkey(vc, 'G', vc_kbd_mode(kbd, VC_APPLIC));
return;
}
put_queue(pad_chars[value]);
put_queue(vc, pad_chars[value]);
if (value == KVAL(K_PENTER) && vc_kbd_mode(kbd, VC_CRLF))
put_queue(10);
put_queue(vc, 10);
}
static void do_cur(unsigned char value, char up_flag)
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(cur_chars[value], vc_kbd_mode(kbd,VC_CKMODE));
applkey(vc, cur_chars[value], vc_kbd_mode(kbd,VC_CKMODE));
}
static void do_shift(unsigned char value, char up_flag)
static void k_shift(struct vc_data *vc, unsigned char value, char up_flag)
{
int old_state = shift_state;
......@@ -705,12 +632,12 @@ static void do_shift(unsigned char value, char up_flag)
if (up_flag) {
/* handle the case that two shift or control
keys are depressed simultaneously */
if (k_down[value])
k_down[value]--;
if (shift_down[value])
shift_down[value]--;
} else
k_down[value]++;
shift_down[value]++;
if (k_down[value])
if (shift_down[value])
shift_state |= (1 << value);
else
shift_state &= ~ (1 << value);
......@@ -718,54 +645,26 @@ static void do_shift(unsigned char value, char up_flag)
/* kludge */
if (up_flag && shift_state != old_state && npadch != -1) {
if (kbd->kbdmode == VC_UNICODE)
to_utf8(npadch & 0xffff);
to_utf8(vc, npadch & 0xffff);
else
put_queue(npadch & 0xff);
put_queue(vc, npadch & 0xff);
npadch = -1;
}
}
/* called after returning from RAW mode or when changing consoles -
recompute k_down[] and shift_state from key_down[] */
/* maybe called when keymap is undefined, so that shiftkey release is seen */
void compute_shiftstate(void)
{
int i, j, k, sym, val;
shift_state = 0;
for(i=0; i < SIZE(k_down); i++)
k_down[i] = 0;
for(i=0; i < SIZE(key_down); i++)
if(key_down[i]) { /* skip this word if not a single bit on */
k = i*BITS_PER_LONG;
for(j=0; j<BITS_PER_LONG; j++,k++)
if(test_bit(k, key_down)) {
sym = U(plain_map[k]);
if(KTYP(sym) == KT_SHIFT || KTYP(sym) == KT_SLOCK) {
val = KVAL(sym);
if (val == KVAL(K_CAPSSHIFT))
val = KVAL(K_SHIFT);
k_down[val]++;
shift_state |= (1<<val);
}
}
}
}
static void do_meta(unsigned char value, char up_flag)
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('\033');
put_queue(value);
put_queue(vc, '\033');
put_queue(vc, value);
} else
put_queue(value | 0x80);
put_queue(vc, value | 0x80);
}
static void do_ascii(unsigned char value, char up_flag)
static void k_ascii(struct vc_data *vc, unsigned char value, char up_flag)
{
int base;
......@@ -785,16 +684,16 @@ static void do_ascii(unsigned char value, char up_flag)
npadch = npadch * base + value;
}
static void do_lock(unsigned char value, char up_flag)
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 do_slock(unsigned char value, char up_flag)
static void k_slock(struct vc_data *vc, unsigned char value, char up_flag)
{
do_shift(value,up_flag);
k_shift(vc, value,up_flag);
if (up_flag || rep)
return;
chg_vc_kbd_slock(kbd, value);
......@@ -810,10 +709,6 @@ static void do_slock(unsigned char value, char up_flag)
* or (ii) whatever pattern of lights people want to show using KDSETLED,
* or (iii) specified bits of specified words in kernel memory.
*/
static unsigned char ledstate = 0xff; /* undefined */
static unsigned char ledioctl;
unsigned char getledstate(void) {
return ledstate;
}
......@@ -827,12 +722,6 @@ void setledstate(struct kbd_struct *kbd, unsigned int led) {
set_leds();
}
static struct ledptr {
unsigned int *addr;
unsigned int mask;
unsigned char valid:1;
} ledptrs[3];
void register_leds(int console, unsigned int led,
unsigned int *addr, unsigned int mask) {
struct kbd_struct *kbd = kbd_table + console;
......@@ -888,6 +777,7 @@ static inline unsigned char getleds(void){
* used, but this allows for easy and efficient race-condition
* prevention later on.
*/
static void kbd_bh(unsigned long dummy)
{
unsigned char leds = getleds();
......@@ -902,15 +792,146 @@ static void kbd_bh(unsigned long dummy)
EXPORT_SYMBOL(keyboard_tasklet);
DECLARE_TASKLET_DISABLED(keyboard_tasklet, kbd_bh, 0);
typedef void (pm_kbd_func) (void);
void handle_scancode(unsigned char scancode, int down)
{
struct vc_data *vc = vc_cons[fg_console].d;
char up_flag = down ? 0 : 0200;
struct tty_struct *tty;
unsigned char keycode;
char raw_mode;
pm_callback pm_kbd_request_override = NULL;
pm_access(pm_kbd);
add_keyboard_randomness(scancode | up_flag);
tty = vc->vc_tty;
if (tty && (!tty->driver_data)) {
/*
* We touch the tty structure via the ttytab array
* without knowing whether or not tty is open, which
* is inherently dangerous. We currently rely on that
* fact that console_open sets tty->driver_data when
* it opens it, and clears it when it closes it.
*/
tty = NULL;
}
kbd = kbd_table + fg_console;
if ((raw_mode = (kbd->kbdmode == VC_RAW))) {
put_queue(vc, scancode | up_flag);
/* we do not return yet, because we want to maintain
the key_down array, so that we have the correct
values when finishing RAW mode or when changing VT's */
}
/*
* Convert scancode to keycode
*/
if (!kbd_translate(scancode, &keycode, raw_mode))
goto out;
/*
* At this point the variable `keycode' contains the keycode.
* Note: the keycode must not be 0 (++Geert: on m68k 0 is valid).
* We keep track of the up/down status of the key, and
* return the keycode if in MEDIUMRAW mode.
*/
if (up_flag) {
rep = 0;
if(!test_and_clear_bit(keycode, key_down))
up_flag = kbd_unexpected_up(keycode);
} else
rep = test_and_set_bit(keycode, key_down);
#ifdef CONFIG_MAGIC_SYSRQ /* Handle the SysRq Hack */
if (keycode == SYSRQ_KEY) {
sysrq_pressed = !up_flag;
goto out;
} else if (sysrq_pressed) {
if (!up_flag) {
handle_sysrq(kbd_sysrq_xlate[keycode], kbd_pt_regs, tty);
goto out;
}
}
#endif
if (kbd->kbdmode == VC_MEDIUMRAW) {
/* soon keycodes will require more than one byte */
put_queue(vc, keycode + up_flag);
raw_mode = 1; /* Most key classes will be ignored */
}
/*
* Small change in philosophy: earlier we defined repetition by
* rep = keycode == prev_keycode;
* prev_keycode = keycode;
* but now by the fact that the depressed key was down already.
* Does this ever make a difference? Yes.
*/
/*
* Repeat a key only if the input buffers are empty or the
* characters get echoed locally. This makes key repeat usable
* with slow applications and under heavy loads.
*/
if (!rep ||
(vc_kbd_mode(kbd,VC_REPEAT) && tty &&
(L_ECHO(tty) || (tty->driver.chars_in_buffer(tty) == 0)))) {
u_short keysym;
u_char type;
/* the XOR below used to be an OR */
int shift_final = (shift_state | kbd->slockstate) ^
kbd->lockstate;
ushort *key_map = key_maps[shift_final];
if (key_map != NULL) {
keysym = key_map[keycode];
type = KTYP(keysym);
if (type >= 0xf0) {
type -= 0xf0;
if (raw_mode && ! (TYPES_ALLOWED_IN_RAW_MODE & (1 << type)))
goto out;
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, up_flag);
if (type != KT_SLOCK)
kbd->slockstate = 0;
} else {
/* maybe only if (kbd->kbdmode == VC_UNICODE) ? */
if (!up_flag && !raw_mode)
to_utf8(vc, keysym);
}
} else {
/* maybe beep? */
/* we have at least to update shift_state */
#if 1 /* how? two almost equivalent choices follow */
compute_shiftstate();
kbd->slockstate = 0; /* play it safe */
#else
keysym = U(plain_map[keycode]);
type = KTYP(keysym);
if (type == KT_SHIFT)
(*key_handler[type])(keysym & 0xff, up_flag);
#endif
}
}
out:
do_poke_blanked_console = 1;
schedule_console_callback();
}
int __init kbd_init(void)
{
int i;
struct kbd_struct kbd0;
extern struct tty_driver console_driver;
kbd0.ledflagstate = kbd0.default_ledflagstate = KBD_DEFLEDS;
kbd0.ledmode = LED_SHOW_FLAGS;
......@@ -922,8 +943,6 @@ int __init kbd_init(void)
for (i = 0 ; i < MAX_NR_CONSOLES ; i++)
kbd_table[i] = kbd0;
ttytab = console_driver.table;
kbd_init_hw();
tasklet_enable(&keyboard_tasklet);
......
include/linux/console_struct.h
View file @ 996e34cc
......@@ -33,6 +33,7 @@ struct vc_data {
unsigned int vc_top, vc_bottom; /* Scrolling region */
unsigned int vc_state; /* Escape sequence parser state */
unsigned int vc_npar,vc_par[NPAR]; /* Parameters of current escape sequence */
struct tty_struct *vc_tty; /* TTY we are attached to */
unsigned long vc_origin; /* [!] Start of real screen */
unsigned long vc_scr_end; /* [!] End of real screen */
unsigned long vc_visible_origin; /* [!] Top of visible window */
......
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