/* keyboard.c: Sun keyboard driver.
*
* Copyright (C) 1995, 1996, 1997 David S. Miller (davem@caip.rutgers.edu)
*
* Added vuid event generation and /dev/kbd device for SunOS
* compatibility - Miguel (miguel@nuclecu.unam.mx)
*
* Added PCI 8042 controller support -DaveM
* Added Magic SysRq support -MJ
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/mm.h>
#include <linux/ptrace.h>
#include <linux/signal.h>
#include <linux/string.h>
#include <linux/fcntl.h>
#include <linux/poll.h>
#include <linux/random.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/sysrq.h>
#include <linux/spinlock.h>
#include <linux/smp_lock.h>
#include <linux/devfs_fs_kernel.h>
#include <asm/kbio.h>
#include <asm/vuid_event.h>
#include <asm/bitops.h>
#include <asm/oplib.h>
#include <asm/uaccess.h>
#include <linux/kbd_kern.h>
#include <linux/kbd_diacr.h>
#include <linux/vt_kern.h>
#ifdef CONFIG_PCI
#include <linux/pci.h>
#include <asm/pbm.h>
#include <asm/ebus.h>
#endif
#include "sunkbd.h"
#define SIZE(x) (sizeof(x)/sizeof((x)[0]))
/* Define this one if you are making a new frame buffer driver */
/* it will not block the keyboard */
/* #define CODING_NEW_DRIVER */
/* KBD device number, temporal */
#define KBD_MAJOR 11
#define KBD_REPORT_ERR
#define KBD_REPORT_UNKN
#ifndef KBD_DEFMODE
#define KBD_DEFMODE ((1 << VC_REPEAT) | (1 << VC_META))
#endif
#ifndef KBD_DEFLEDS
/*
* Some laptops take the 789uiojklm,. keys as number pad when NumLock
* is on. This seems a good reason to start with NumLock off.
*/
#define KBD_DEFLEDS 0
#endif
#ifndef KBD_DEFLOCK
#define KBD_DEFLOCK 0
#endif
extern void poke_blanked_console(void);
extern void ctrl_alt_del(void);
extern void reset_vc(unsigned int new_console);
extern void scrollback(int);
extern void scrollfront(int);
struct l1a_kbd_state l1a_state;
static spinlock_t sunkbd_lock = SPIN_LOCK_UNLOCKED;
/*
* 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)
*/
/* shift state counters.. */
static unsigned char k_down[NR_SHIFT];
/* keyboard key bitmap */
static unsigned long key_down[256/BITS_PER_LONG];
void push_kbd (int scan);
int kbd_redirected;
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.
*/
#ifndef CONFIG_PCI
int shift_state;
struct kbd_struct kbd_table[MAX_NR_CONSOLES];
#endif
static int npadch = -1; /* -1 or number assembled on pad */
static unsigned char diacr;
static char rep; /* flag telling character repeat */
static struct tty_struct **ttytab;
static struct kbd_struct * kbd = kbd_table;
static struct tty_struct * tty;
static int compose_led_on;
static int kbd_delay_ticks = HZ / 5;
static int kbd_rate_ticks = HZ / 20;
void sun_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_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_ignore, do_ignore, do_ignore, do_ignore
};
typedef void (*void_fnp)(void);
typedef void (void_fn)(void);
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;
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
};
/* maximum values each key_handler can handle */
#ifndef CONFIG_PCI
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
};
const int NR_TYPES = SIZE(max_vals);
#endif
static void put_queue(int);
static unsigned char handle_diacr(unsigned char);
/* pt_regs - set by keyboard_interrupt(), used by show_ptregs() */
static struct pt_regs * pt_regs;
#ifdef CONFIG_MAGIC_SYSRQ
unsigned char sun_sysrq_xlate[128] =
"\0\0\0\0\0\201\202\212\203\213\204\214\205\0\206\0" /* 0x00 - 0x0f */
"\207\210\211\0\0\0\0\0\0\0\0\0\0\03312" /* 0x10 - 0x1f */
"34567890-=`\177\0=/*" /* 0x20 - 0x2f */
"\0\0.\0\0\011qwertyuiop" /* 0x30 - 0x3f */
"[]\177\000789-\0\0\0\0\0asd" /* 0x40 - 0x4f */
"fghjkl;'\\\015\0154560\0" /* 0x50 - 0x5f */
"\0\0\0\0zxcvbnm,./\0\012" /* 0x60 - 0x6f */
"123\0\0\0\0\0\0 \0\0\0\0\0\0"; /* 0x70 - 0x7f */
#endif
volatile unsigned char sunkbd_layout;
volatile unsigned char sunkbd_type;
#define SUNKBD_TYPE2 0x02
#define SUNKBD_TYPE3 0x03
#define SUNKBD_TYPE4 0x04
#define SUNKBD_LOUT_TYP4 0x00
#define SUNKBD_LOUT_TYP5_MASK 0x20
volatile int kbd_reset_pending;
volatile int kbd_layout_pending;
/* commands */
#define SKBDCMD_RESET 0x1
#define SKBDCMD_GLAYOUT 0xf
#define SKBDCMD_BELLON 0x2
#define SKBDCMD_BELLOFF 0x3
#define SKBDCMD_SETLED 0xe
#define SKBDCMD_NOCLICK 0xb
#define SKBDCMD_CLICK 0xa
static unsigned char sunkbd_clickp;
/* The led set commands require sending the SETLED byte then
* a byte encoding which led's to have set. Here are the bit
* values, a bit set = led-on.
*/
#define LED_NLOCK 0x1 /* Num-lock */
#define LED_CMPOSE 0x2 /* Compose */
#define LED_SCRLCK 0x4 /* Scroll-lock */
#define LED_CLOCK 0x8 /* Caps-lock */
/* Special state characters */
#define SKBD_RESET 0xff
#define SKBD_ALLUP 0x7f
#define SKBD_LYOUT 0xfe
/* On the Sparc the keyboard could be one of two things.
* It could be a real keyboard speaking over one of the
* channels of the second zs8530 chip (other channel is
* used by the Sun mouse). Else we have serial console
* going, and thus the other zs8530 chip is who we speak
* to. Either way, we communicate through the zs8530
* driver for all our I/O.
*/
#define SUNKBD_UBIT 0x80 /* If set, key went up */
#define SUNKBD_KMASK 0x7f /* Other bits are the keycode */
#define KEY_LSHIFT 0x81
#define KEY_RSHIFT 0x82
#define KEY_CONTROL 0x83
#define KEY_NILL 0x84
#define KEY_CAPSLOCK 0x85
#define KEY_ALT 0x86
#define KEY_L1 0x87
/* Due to sun_kbd_init() being called before rs_init(), and sun_kbd_init() doing:
*
* tasklet_enable(&keyboard_tasklet);
* tasklet_schedule(&keyboard_tasklet);
*
* this might well be called before some driver has claimed interest in
* handling the keyboard input/output. So we need to assign an initial nop.
*/
static void nop_kbd_put_char(unsigned char c) { }
static void (*kbd_put_char)(unsigned char) = nop_kbd_put_char;
/* Must be invoked under sunkbd_lock. */
static inline void send_cmd(unsigned char c)
{
kbd_put_char(c);
}
/* kbd_bh() calls this to send the SKBDCMD_SETLED to the sun keyboard
* with the proper bit pattern for the leds to be set. It basically
* converts the kbd->ledflagstate values to corresponding sun kbd led
* bit value.
*/
static inline unsigned char vcleds_to_sunkbd(unsigned char vcleds)
{
unsigned char retval = 0;
if(vcleds & (1<<VC_SCROLLOCK))
retval |= LED_SCRLCK;
if(vcleds & (1<<VC_NUMLOCK))
retval |= LED_NLOCK;
if(vcleds & (1<<VC_CAPSLOCK))
retval |= LED_CLOCK;
if(compose_led_on)
retval |= LED_CMPOSE;
return retval;
}
/*
* Translation of escaped scancodes to keycodes.
* This is now user-settable.
* The keycodes 1-88,96-111,119 are fairly standard, and
* should probably not be changed - changing might confuse X.
* X also interprets scancode 0x5d (KEY_Begin).
*
* For 1-88 keycode equals scancode.
*/
#define E0_KPENTER 96
#define E0_RCTRL 97
#define E0_KPSLASH 98
#define E0_PRSCR 99
#define E0_RALT 100
#define E0_BREAK 101 /* (control-pause) */
#define E0_HOME 102
#define E0_UP 103
#define E0_PGUP 104
#define E0_LEFT 105
#define E0_RIGHT 106
#define E0_END 107
#define E0_DOWN 108
#define E0_PGDN 109
#define E0_INS 110
#define E0_DEL 111
#define E1_PAUSE 119
/*
* The keycodes below are randomly located in 89-95,112-118,120-127.
* They could be thrown away (and all occurrences below replaced by 0),
* but that would force many users to use the `setkeycodes' utility, where
* they needed not before. It does not matter that there are duplicates, as
* long as no duplication occurs for any single keyboard.
*/
#define SC_LIM 89
#define FOCUS_PF1 85 /* actual code! */
#define FOCUS_PF2 89
#define FOCUS_PF3 90
#define FOCUS_PF4 91
#define FOCUS_PF5 92
#define FOCUS_PF6 93
#define FOCUS_PF7 94
#define FOCUS_PF8 95
#define FOCUS_PF9 120
#define FOCUS_PF10 121
#define FOCUS_PF11 122
#define FOCUS_PF12 123
#define JAP_86 124
/* tfj@olivia.ping.dk:
* The four keys are located over the numeric keypad, and are
* labelled A1-A4. It's an rc930 keyboard, from
* Regnecentralen/RC International, Now ICL.
* Scancodes: 59, 5a, 5b, 5c.
*/
#define RGN1 124
#define RGN2 125
#define RGN3 126
#define RGN4 127
static unsigned char high_keys[128 - SC_LIM] = {
RGN1, RGN2, RGN3, RGN4, 0, 0, 0, /* 0x59-0x5f */
0, 0, 0, 0, 0, 0, 0, 0, /* 0x60-0x67 */
0, 0, 0, 0, 0, FOCUS_PF11, 0, FOCUS_PF12, /* 0x68-0x6f */
0, 0, 0, FOCUS_PF2, FOCUS_PF9, 0, 0, FOCUS_PF3, /* 0x70-0x77 */
FOCUS_PF4, FOCUS_PF5, FOCUS_PF6, FOCUS_PF7, /* 0x78-0x7b */
FOCUS_PF8, JAP_86, FOCUS_PF10, 0 /* 0x7c-0x7f */
};
/* BTC */
#define E0_MACRO 112
/* LK450 */
#define E0_F13 113
#define E0_F14 114
#define E0_HELP 115
#define E0_DO 116
#define E0_F17 117
#define E0_KPMINPLUS 118
/*
* My OmniKey generates e0 4c for the "OMNI" key and the
* right alt key does nada. [kkoller@nyx10.cs.du.edu]
*/
#define E0_OK 124
/*
* New microsoft keyboard is rumoured to have
* e0 5b (left window button), e0 5c (right window button),
* e0 5d (menu button). [or: LBANNER, RBANNER, RMENU]
* [or: Windows_L, Windows_R, TaskMan]
*/
#define E0_MSLW 125
#define E0_MSRW 126
#define E0_MSTM 127
static unsigned char e0_keys[128] = {
0, 0, 0, 0, 0, 0, 0, 0, /* 0x00-0x07 */
0, 0, 0, 0, 0, 0, 0, 0, /* 0x08-0x0f */
0, 0, 0, 0, 0, 0, 0, 0, /* 0x10-0x17 */
0, 0, 0, 0, E0_KPENTER, E0_RCTRL, 0, 0, /* 0x18-0x1f */
0, 0, 0, 0, 0, 0, 0, 0, /* 0x20-0x27 */
0, 0, 0, 0, 0, 0, 0, 0, /* 0x28-0x2f */
0, 0, 0, 0, 0, E0_KPSLASH, 0, E0_PRSCR, /* 0x30-0x37 */
E0_RALT, 0, 0, 0, 0, E0_F13, E0_F14, E0_HELP, /* 0x38-0x3f */
E0_DO, E0_F17, 0, 0, 0, 0, E0_BREAK, E0_HOME, /* 0x40-0x47 */
E0_UP, E0_PGUP, 0, E0_LEFT, E0_OK, E0_RIGHT, E0_KPMINPLUS, E0_END,/* 0x48-0x4f */
E0_DOWN, E0_PGDN, E0_INS, E0_DEL, 0, 0, 0, 0, /* 0x50-0x57 */
0, 0, 0, E0_MSLW, E0_MSRW, E0_MSTM, 0, 0, /* 0x58-0x5f */
0, 0, 0, 0, 0, 0, 0, 0, /* 0x60-0x67 */
0, 0, 0, 0, 0, 0, 0, E0_MACRO, /* 0x68-0x6f */
0, 0, 0, 0, 0, 0, 0, 0, /* 0x70-0x77 */
0, 0, 0, 0, 0, 0, 0, 0 /* 0x78-0x7f */
};
/* we use this map to determine if a particular key should not be
autorepeated. We don't autorepeat CONTROL, LSHIFT, CAPS,
ALT, LMETA, RSHIFT, RMETA, ALTG and COMPOSE */
static unsigned char norepeat_keys[128] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, /* 0x00-0x0f */
0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x10-0x1f */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x20-0x2f */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x30-0x3f */
0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, /* 0x40-0x4f */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x50-0x5f */
0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, /* 0x60-0x6f */
0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 0, 0, /* 0x70-0x7f */
};
int sun_setkeycode(unsigned int scancode, unsigned int keycode)
{
if (scancode < SC_LIM || scancode > 255 || keycode > 127)
return -EINVAL;
if (scancode < 128)
high_keys[scancode - SC_LIM] = keycode;
else
e0_keys[scancode - 128] = keycode;
return 0;
}
int sun_getkeycode(unsigned int scancode)
{
return
(scancode < SC_LIM || scancode > 255) ? -EINVAL :
(scancode < 128) ? high_keys[scancode - SC_LIM] :
e0_keys[scancode - 128];
}
static void __sunkbd_inchar(unsigned char ch, struct pt_regs *regs);
void sunkbd_inchar(unsigned char ch, struct pt_regs *regs);
static void keyboard_timer (unsigned long ignored);
static struct timer_list
auto_repeat_timer = { function: keyboard_timer };
/* Keeps track of the last pressed key */
static unsigned char last_keycode;
static void
keyboard_timer (unsigned long ignored)
{
unsigned long flags;
spin_lock_irqsave(&sunkbd_lock, flags);
/* Auto repeat: send regs = 0 to indicate autorepeat */
__sunkbd_inchar (last_keycode, 0);
del_timer (&auto_repeat_timer);
if (kbd_rate_ticks) {
auto_repeat_timer.expires = jiffies + kbd_rate_ticks;
add_timer (&auto_repeat_timer);
}
spin_unlock_irqrestore(&sunkbd_lock, flags);
}
#ifndef CONFIG_PCI
DECLARE_TASKLET_DISABLED(keyboard_tasklet, sun_kbd_bh, 0);
#endif
/* #define SKBD_DEBUG */
/* This is our keyboard 'interrupt' routine.
* Must run under sunkbd_lock.
*/
static void __sunkbd_inchar(unsigned char ch, struct pt_regs *regs)
{
unsigned char keycode;
char up_flag; /* 0 or SUNKBD_UBIT */
char raw_mode;
if(ch == SKBD_RESET) {
kbd_reset_pending = 1;
goto out;
}
if(ch == SKBD_LYOUT) {
kbd_layout_pending = 1;
goto out;
}
if(kbd_reset_pending) {
sunkbd_type = ch;
kbd_reset_pending = 0;
if(ch == SUNKBD_TYPE4)
send_cmd(SKBDCMD_GLAYOUT);
goto out;
} else if(kbd_layout_pending) {
sunkbd_layout = ch;
kbd_layout_pending = 0;
goto out;
} else if(ch == SKBD_ALLUP) {
del_timer (&auto_repeat_timer);
memset(key_down, 0, sizeof(key_down));
sun_compute_shiftstate();
goto out;
}
#ifdef SKBD_DEBUG
if(ch == 0x7f)
printk("KBD<ALL KEYS UP>");
else
printk("KBD<%x %s>", ch,
((ch&0x80) ? "UP" : "DOWN"));
#endif
/* Whee, a real character. */
if(regs) {
pt_regs = regs;
last_keycode = keycode = ch;
} else {
keycode = ch;
}
do_poke_blanked_console = 1;
schedule_console_callback();
add_keyboard_randomness(keycode);
tty = ttytab? ttytab[fg_console]: NULL;
if (tty && (!tty->driver_data)) {
/* This is to workaround ugly bug in tty_io.c, which
does not do locking when it should */
tty = NULL;
}
kbd = kbd_table + fg_console;
if((raw_mode = (kbd->kbdmode == VC_RAW))) {
if (kbd_redirected == fg_console+1)
push_kbd (keycode);
else
put_queue(keycode);
/* 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.
*/
}
up_flag = (keycode & SUNKBD_UBIT); /* The 'up' bit */
keycode &= SUNKBD_KMASK; /* all the rest */
del_timer (&auto_repeat_timer);
if(up_flag) {
rep = 0;
clear_bit(keycode, key_down);
} else {
if (!norepeat_keys[keycode]) {
if (kbd_rate_ticks) {
auto_repeat_timer.expires =
jiffies + kbd_delay_ticks;
add_timer (&auto_repeat_timer);
}
}
rep = test_and_set_bit(keycode, key_down);
}
#ifdef CONFIG_MAGIC_SYSRQ /* Handle the SysRq hack */
if (l1a_state.l1_down) {
if (!up_flag)
handle_sysrq(sun_sysrq_xlate[keycode], pt_regs, kbd, tty);
goto out;
}
#endif
if(raw_mode)
goto out;
if(kbd->kbdmode == VC_MEDIUMRAW) {
put_queue(keycode + up_flag);
goto out;
}
/*
* 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->lockstate ^ kbd->slockstate;
ushort *key_map = key_maps[shift_final];
if (key_map != NULL) {
keysym = key_map[keycode];
type = KTYP(keysym);
if (type >= 0xf0) {
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];
}
}
(*key_handler[type])(keysym & 0xff, up_flag);
if (type != KT_SLOCK)
kbd->slockstate = 0;
}
} else {
/* maybe beep? */
/* we have at least to update shift_state */
sun_compute_shiftstate();
}
}
out:
tasklet_schedule(&keyboard_tasklet);
}
void sunkbd_inchar(unsigned char ch, struct pt_regs *regs)
{
unsigned long flags;
spin_lock_irqsave(&sunkbd_lock, flags);
__sunkbd_inchar(ch, regs);
spin_unlock_irqrestore(&sunkbd_lock, flags);
}
static void put_queue(int ch)
{
if (tty) {
tty_insert_flip_char(tty, ch, 0);
con_schedule_flip(tty);
}
}
static void puts_queue(char *cp)
{
if (!tty)
return;
while (*cp) {
tty_insert_flip_char(tty, *cp, 0);
cp++;
}
con_schedule_flip(tty);
}
static void applkey(int key, char mode)
{
static char buf[] = { 0x1b, 'O', 0x00, 0x00 };
buf[1] = (mode ? 'O' : '[');
buf[2] = key;
puts_queue(buf);
}
static void enter(void)
{
put_queue(13);
if (vc_kbd_mode(kbd,VC_CRLF))
put_queue(10);
}
static void caps_toggle(void)
{
if (rep)
return;
chg_vc_kbd_led(kbd, VC_CAPSLOCK);
}
static void caps_on(void)
{
if (rep)
return;
set_vc_kbd_led(kbd, VC_CAPSLOCK);
}
static void show_ptregs(void)
{
if (pt_regs)
show_regs(pt_regs);
}
static void hold(void)
{
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 num(void)
{
if (vc_kbd_mode(kbd,VC_APPLIC))
applkey('P', 1);
else
bare_num();
}
/*
* 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 bare_num(void)
{
if (!rep)
chg_vc_kbd_led(kbd,VC_NUMLOCK);
}
static void lastcons(void)
{
/* switch to the last used console, ChN */
set_console(last_console);
}
static void decr_console(void)
{
int i;
for (i = fg_console-1; i != fg_console; i--) {
if (i == -1)
i = MAX_NR_CONSOLES-1;
if (vc_cons_allocated(i))
break;
}
set_console(i);
}
static void incr_console(void)
{
int i;
for (i = fg_console+1; i != fg_console; i++) {
if (i == MAX_NR_CONSOLES)
i = 0;
if (vc_cons_allocated(i))
break;
}
set_console(i);
}
static void send_intr(void)
{
if (!tty)
return;
tty_insert_flip_char(tty, 0, TTY_BREAK);
con_schedule_flip(tty);
}
static void scroll_forw(void)
{
scrollfront(0);
}
static void scroll_back(void)
{
scrollback(0);
}
static void boot_it(void)
{
extern int obp_system_intr(void);
if (!obp_system_intr())
ctrl_alt_del();
/* sigh.. attempt to prevent multiple entry */
last_keycode=1;
rep = 0;
}
static void compose(void)
{
dead_key_next = 1;
compose_led_on = 1;
set_leds();
}
#ifdef CONFIG_PCI
extern int spawnpid, spawnsig;
#else
int spawnpid, spawnsig;
#endif
static void spawn_console(void)
{
if (spawnpid)
if(kill_proc(spawnpid, spawnsig, 1))
spawnpid = 0;
}
static void SAK(void)
{
do_SAK(tty);
#if 0
/*
* Need to fix SAK handling to fix up RAW/MEDIUM_RAW and
* vt_cons modes before we can enable RAW/MEDIUM_RAW SAK
* handling.
*
* We should do this some day --- the whole point of a secure
* attention key is that it should be guaranteed to always
* work.
*/
reset_vc(fg_console);
do_unblank_screen(); /* not in interrupt routine? */
#endif
}
static void do_ignore(unsigned char value, char up_flag)
{
}
static void do_null()
{
sun_compute_shiftstate();
}
static void do_spec(unsigned char value, char up_flag)
{
if (up_flag)
return;
if (value >= SIZE(spec_fn_table))
return;
spec_fn_table[value]();
}
static void do_lowercase(unsigned char value, char up_flag)
{
printk("keyboard.c: do_lowercase was called - impossible\n");
}
static void do_self(unsigned char value, char up_flag)
{
if (up_flag)
return; /* no action, if this is a key release */
if (diacr) {
value = handle_diacr(value);
compose_led_on = 0;
set_leds();
}
if (dead_key_next) {
dead_key_next = 0;
diacr = value;
return;
}
put_queue(value);
}
#define A_GRAVE '`'
#define A_ACUTE '\''
#define A_CFLEX '^'
#define A_TILDE '~'
#define A_DIAER '"'
#define A_CEDIL ','
static unsigned char ret_diacr[NR_DEAD] =
{A_GRAVE, A_ACUTE, A_CFLEX, A_TILDE, A_DIAER, A_CEDIL };
/* If a dead key pressed twice, output a character corresponding to it, */
/* otherwise just remember the dead key. */
static void do_dead(unsigned char value, char up_flag)
{
if (up_flag)
return;
value = ret_diacr[value];
if (diacr == value) { /* pressed twice */
diacr = 0;
put_queue(value);
return;
}
diacr = value;
}
/* If space is pressed, return the character corresponding the pending */
/* dead key, otherwise try to combine the two. */
unsigned char handle_diacr(unsigned char ch)
{
int d = diacr;
int i;
diacr = 0;
if (ch == ' ')
return d;
for (i = 0; i < accent_table_size; i++) {
if (accent_table[i].diacr == d && accent_table[i].base == ch)
return accent_table[i].result;
}
put_queue(d);
return ch;
}
static void do_cons(unsigned char value, char up_flag)
{
if (up_flag)
return;
set_console(value);
}
static void do_fn(unsigned char value, char up_flag)
{
if (up_flag)
return;
if (value < SIZE(func_table)) {
if (func_table[value])
puts_queue(func_table[value]);
} else
printk("do_fn called with value=%d\n", value);
}
static void do_pad(unsigned char value, char up_flag)
{
static const char *pad_chars = "0123456789+-*/\015,.?";
static const char *app_map = "pqrstuvwxylSRQMnn?";
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) && !k_down[KG_SHIFT]) {
applkey(app_map[value], 1);
return;
}
if (!vc_kbd_led(kbd,VC_NUMLOCK))
switch (value) {
case KVAL(K_PCOMMA):
case KVAL(K_PDOT):
do_fn(KVAL(K_REMOVE), 0);
return;
case KVAL(K_P0):
do_fn(KVAL(K_INSERT), 0);
return;
case KVAL(K_P1):
do_fn(KVAL(K_SELECT), 0);
return;
case KVAL(K_P2):
do_cur(KVAL(K_DOWN), 0);
return;
case KVAL(K_P3):
do_fn(KVAL(K_PGDN), 0);
return;
case KVAL(K_P4):
do_cur(KVAL(K_LEFT), 0);
return;
case KVAL(K_P6):
do_cur(KVAL(K_RIGHT), 0);
return;
case KVAL(K_P7):
do_fn(KVAL(K_FIND), 0);
return;
case KVAL(K_P8):
do_cur(KVAL(K_UP), 0);
return;
case KVAL(K_P9):
do_fn(KVAL(K_PGUP), 0);
return;
case KVAL(K_P5):
applkey('G', vc_kbd_mode(kbd, VC_APPLIC));
return;
}
put_queue(pad_chars[value]);
if (value == KVAL(K_PENTER) && vc_kbd_mode(kbd, VC_CRLF))
put_queue(10);
}
static void do_cur(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));
}
static void do_shift(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 (k_down[value])
k_down[value]--;
} else
k_down[value]++;
if (k_down[value])
shift_state |= (1 << value);
else
shift_state &= ~ (1 << value);
/* kludge, no joke... */
if (up_flag && shift_state != old_state && npadch != -1) {
put_queue(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 sun_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) {
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)
{
if (up_flag)
return;
if (vc_kbd_mode(kbd, VC_META)) {
put_queue('\033');
put_queue(value);
} else
put_queue(value | 0x80);
}
static void do_ascii(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 do_lock(unsigned char value, char up_flag)
{
if (up_flag || rep)
return;
chg_vc_kbd_lock(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.
*/
static unsigned char ledstate = 0xff; /* undefined */
static unsigned char ledioctl;
unsigned char sun_getledstate(void) {
return ledstate;
}
void sun_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 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;
if (led < 3) {
ledptrs[led].addr = addr;
ledptrs[led].mask = mask;
ledptrs[led].valid = 1;
kbd->ledmode = LED_SHOW_MEM;
} else
kbd->ledmode = LED_SHOW_FLAGS;
}
static inline unsigned char getleds(void){
struct kbd_struct *kbd = kbd_table + fg_console;
unsigned char leds;
if (kbd->ledmode == LED_SHOW_IOCTL)
return ledioctl;
leds = kbd->ledflagstate;
if (kbd->ledmode == LED_SHOW_MEM) {
if (ledptrs[0].valid) {
if (*ledptrs[0].addr & ledptrs[0].mask)
leds |= 1;
else
leds &= ~1;
}
if (ledptrs[1].valid) {
if (*ledptrs[1].addr & ledptrs[1].mask)
leds |= 2;
else
leds &= ~2;
}
if (ledptrs[2].valid) {
if (*ledptrs[2].addr & ledptrs[2].mask)
leds |= 4;
else
leds &= ~4;
}
}
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. Not yet
* used, but this allows for easy and efficient race-condition
* prevention later on.
*/
static unsigned char sunkbd_ledstate = 0xff; /* undefined */
void sun_kbd_bh(unsigned long dummy)
{
unsigned long flags;
unsigned char leds, kbd_leds;
spin_lock_irqsave(&sunkbd_lock, flags);
leds = getleds();
kbd_leds = vcleds_to_sunkbd(leds);
if (kbd_leds != sunkbd_ledstate) {
ledstate = leds;
sunkbd_ledstate = kbd_leds;
send_cmd(SKBDCMD_SETLED);
send_cmd(kbd_leds);
}
spin_unlock_irqrestore(&sunkbd_lock, flags);
}
/* Support for keyboard "beeps". */
/* Timer routine to turn off the beep after the interval expires. */
static void sunkbd_kd_nosound(unsigned long __unused)
{
unsigned long flags;
spin_lock_irqsave(&sunkbd_lock, flags);
send_cmd(SKBDCMD_BELLOFF);
spin_unlock_irqrestore(&sunkbd_lock, flags);
}
/*
* Initiate a keyboard beep. If the frequency is zero, then we stop
* the beep. Any other frequency will start a monotone beep. The beep
* will be stopped by a timer after "ticks" jiffies. If ticks is 0,
* then we do not start a timer.
*/
static void sunkbd_kd_mksound(unsigned int hz, unsigned int ticks)
{
unsigned long flags;
static struct timer_list sound_timer = { function: sunkbd_kd_nosound };
spin_lock_irqsave(&sunkbd_lock, flags);
del_timer(&sound_timer);
if (hz) {
send_cmd(SKBDCMD_BELLON);
if (ticks) {
sound_timer.expires = jiffies + ticks;
add_timer(&sound_timer);
}
} else
send_cmd(SKBDCMD_BELLOFF);
spin_unlock_irqrestore(&sunkbd_lock, flags);
}
extern void (*kd_mksound)(unsigned int hz, unsigned int ticks);
int __init sun_kbd_init(void)
{
int i, opt_node;
struct kbd_struct kbd0;
extern struct tty_driver console_driver;
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;
ttytab = console_driver.table;
kd_mksound = sunkbd_kd_mksound;
/* XXX Check keyboard-click? property in 'options' PROM node XXX */
if(sparc_cpu_model != sun4) {
opt_node = prom_getchild(prom_root_node);
opt_node = prom_searchsiblings(opt_node, "options");
i = prom_getintdefault(opt_node, "keyboard-click?", -1);
if(i != -1)
sunkbd_clickp = 1;
else
sunkbd_clickp = 0;
} else {
sunkbd_clickp = 0;
}
keyboard_tasklet.func = sun_kbd_bh;
tasklet_enable(&keyboard_tasklet);
tasklet_schedule(&keyboard_tasklet);
return 0;
}
/* /dev/kbd support */
#define KBD_QSIZE 32
static Firm_event kbd_queue [KBD_QSIZE];
static int kbd_head, kbd_tail;
static spinlock_t kbd_queue_lock = SPIN_LOCK_UNLOCKED;
char kbd_opened;
static int kbd_active = 0;
static DECLARE_WAIT_QUEUE_HEAD(kbd_wait);
static struct fasync_struct *kb_fasync;
void
push_kbd (int scan)
{
unsigned long flags;
int next;
if (scan == KBD_IDLE)
return;
spin_lock_irqsave(&kbd_queue_lock, flags);
next = (kbd_head + 1) % KBD_QSIZE;
if (next != kbd_tail){
kbd_queue [kbd_head].id = scan & KBD_KEYMASK;
kbd_queue [kbd_head].value=scan & KBD_UP ? VKEY_UP : VKEY_DOWN;
kbd_queue [kbd_head].time = xtime;
kbd_head = next;
}
spin_unlock_irqrestore(&kbd_queue_lock, flags);
kill_fasync (&kb_fasync, SIGIO, POLL_IN);
wake_up_interruptible (&kbd_wait);
}
static ssize_t
kbd_read (struct file *f, char *buffer, size_t count, loff_t *ppos)
{
DECLARE_WAITQUEUE(wait, current);
unsigned long flags;
char *end, *p;
/* Return EWOULDBLOCK, because this is what the X server expects */
if (kbd_head == kbd_tail){
if (f->f_flags & O_NONBLOCK)
return -EWOULDBLOCK;
add_wait_queue (&kbd_wait, &wait);
repeat:
set_current_state(TASK_INTERRUPTIBLE);
if (kbd_head == kbd_tail && !signal_pending(current)) {
schedule();
goto repeat;
}
current->state = TASK_RUNNING;
remove_wait_queue (&kbd_wait, &wait);
}
/* There is data in the keyboard, fill the user buffer */
end = buffer+count;
p = buffer;
spin_lock_irqsave(&kbd_queue_lock, flags);
for (; p < end && kbd_head != kbd_tail;){
Firm_event this_event = kbd_queue[kbd_tail];
kbd_tail = (kbd_tail + 1) % KBD_QSIZE;
spin_unlock_irqrestore(&kbd_queue_lock, flags);
#ifdef CONFIG_SPARC32_COMPAT
if (current->thread.flags & SPARC_FLAG_32BIT) {
if (copy_to_user((Firm_event *)p, &this_event,
sizeof(Firm_event)-sizeof(struct timeval)))
return -EFAULT;
p += sizeof(Firm_event)-sizeof(struct timeval);
if (__put_user(this_event.time.tv_sec, (u32 *)p))
return -EFAULT;
p += sizeof(u32);
if (__put_user(this_event.time.tv_usec, (u32 *)p))
return -EFAULT;
p += sizeof(u32);
} else
#endif
{
if (copy_to_user((Firm_event *)p, &this_event,
sizeof(Firm_event)))
return -EFAULT;
p += sizeof (Firm_event);
}
#ifdef KBD_DEBUG
printk ("[%s]", this_event.value == VKEY_UP ? "UP" : "DOWN");
#endif
spin_lock_irqsave(&kbd_queue_lock, flags);
}
spin_unlock_irqrestore(&kbd_queue_lock, flags);
return p-buffer;
}
/* Needed by X */
static int kbd_fasync (int fd, struct file *filp, int on)
{
int retval;
retval = fasync_helper (fd, filp, on, &kb_fasync);
if (retval < 0)
return retval;
return 0;
}
static unsigned int kbd_poll (struct file *f, poll_table *wait)
{
poll_wait(f, &kbd_wait, wait);
if (kbd_head != kbd_tail)
return POLLIN | POLLRDNORM;
return 0;
}
static int
kbd_ioctl (struct inode *i, struct file *f, unsigned int cmd, unsigned long arg)
{
unsigned char c;
unsigned char leds = 0;
int value;
switch (cmd){
case KIOCTYPE: /* return keyboard type */
if (put_user(sunkbd_type, (int *) arg))
return -EFAULT;
break;
case KIOCGTRANS:
if (put_user(TR_UNTRANS_EVENT, (int *) arg))
return -EFAULT;
break;
case KIOCTRANS:
if (get_user(value, (int *) arg))
return -EFAULT;
if (value != TR_UNTRANS_EVENT)
return -EINVAL;
break;
case KIOCLAYOUT:
if (put_user(sunkbd_layout, (int *) arg))
return -EFAULT;
break;
case KIOCSDIRECT:
#ifndef CODING_NEW_DRIVER
if (get_user(value, (int *) arg))
return -EFAULT;
if(value)
kbd_redirected = fg_console + 1;
else
kbd_redirected = 0;
kbd_table [fg_console].kbdmode = kbd_redirected ? VC_RAW : VC_XLATE;
#endif
break;
case KIOCCMD:
if (get_user(value, (int *) arg))
return -EFAULT;
c = (unsigned char) value;
switch (c) {
case SKBDCMD_CLICK:
case SKBDCMD_NOCLICK:
spin_lock_irq(&sunkbd_lock);
send_cmd(c);
spin_unlock_irq(&sunkbd_lock);
return 0;
case SKBDCMD_BELLON:
kd_mksound(1,0);
return 0;
case SKBDCMD_BELLOFF:
kd_mksound(0,0);
return 0;
default:
return -EINVAL;
}
case KIOCSLED:
if (get_user(c, (unsigned char *) arg))
return -EFAULT;
if (c & LED_SCRLCK) leds |= (1 << VC_SCROLLOCK);
if (c & LED_NLOCK) leds |= (1 << VC_NUMLOCK);
if (c & LED_CLOCK) leds |= (1 << VC_CAPSLOCK);
compose_led_on = !!(c & LED_CMPOSE);
sun_setledstate(kbd_table + fg_console, leds);
break;
case KIOCGLED:
if (put_user(vcleds_to_sunkbd(getleds()), (unsigned char *) arg))
return -EFAULT;
break;
case KIOCGRATE:
{
struct kbd_rate rate;
rate.delay = kbd_delay_ticks;
if (kbd_rate_ticks)
rate.rate = HZ / kbd_rate_ticks;
else
rate.rate = 0;
if (copy_to_user((struct kbd_rate *)arg, &rate,
sizeof(struct kbd_rate)))
return -EFAULT;
return 0;
}
case KIOCSRATE:
{
struct kbd_rate rate;
if (verify_area(VERIFY_READ, (void *)arg,
sizeof(struct kbd_rate)))
return -EFAULT;
copy_from_user(&rate, (struct kbd_rate *)arg,
sizeof(struct kbd_rate));
if (rate.rate > 50)
return -EINVAL;
if (rate.rate == 0)
kbd_rate_ticks = 0;
else
kbd_rate_ticks = HZ / rate.rate;
kbd_delay_ticks = rate.delay;
return 0;
}
case FIONREAD: /* return number of bytes in kbd queue */
{
int count;
count = kbd_head - kbd_tail;
if (put_user((count < 0) ? KBD_QSIZE - count : count, (int *) arg))
return -EFAULT;
return 0;
}
default:
printk ("Unknown Keyboard ioctl: %8.8x\n", cmd);
return -EINVAL;
}
return 0;
}
static int
kbd_open (struct inode *i, struct file *f)
{
spin_lock_irq(&kbd_queue_lock);
kbd_active++;
if (kbd_opened)
goto out;
kbd_opened = fg_console + 1;
kbd_head = kbd_tail = 0;
out:
spin_unlock_irq(&kbd_queue_lock);
return 0;
}
static int
kbd_close (struct inode *i, struct file *f)
{
spin_lock_irq(&kbd_queue_lock);
if (!--kbd_active) {
if (kbd_redirected)
kbd_table [kbd_redirected-1].kbdmode = VC_XLATE;
kbd_redirected = 0;
kbd_opened = 0;
kbd_fasync (-1, f, 0);
}
spin_unlock_irq(&kbd_queue_lock);
return 0;
}
static struct file_operations kbd_fops =
{
read: kbd_read,
poll: kbd_poll,
ioctl: kbd_ioctl,
open: kbd_open,
release: kbd_close,
fasync: kbd_fasync,
};
void __init keyboard_zsinit(void (*put_char)(unsigned char))
{
int timeout = 0;
kbd_put_char = put_char;
if (!kbd_put_char)
panic("keyboard_zsinit: no put_char parameter");
/* Test out the leds */
sunkbd_type = 255;
sunkbd_layout = 0;
send_cmd(SKBDCMD_RESET);
send_cmd(SKBDCMD_RESET);
while((sunkbd_type==255) && timeout++ < 25000) {
udelay(100);
barrier();
}
if(timeout>=25000) {
printk("keyboard: not present\n");
return;
}
if(sunkbd_type != SUNKBD_TYPE4) {
printk("Sun TYPE %d keyboard detected ", sunkbd_type);
} else {
timeout=0;
while((sunkbd_layout==0) && timeout++ < 10000) {
udelay(100);
barrier();
}
printk("Sun TYPE %d keyboard detected ",
((sunkbd_layout & SUNKBD_LOUT_TYP5_MASK) ? 5 : 4));
}
if(sunkbd_type == SUNKBD_TYPE2)
sunkbd_clickp = 0;
spin_lock_irq(&sunkbd_lock);
if(sunkbd_clickp) {
send_cmd(SKBDCMD_CLICK);
printk("with keyclick\n");
} else {
send_cmd(SKBDCMD_NOCLICK);
printk("without keyclick\n");
}
/* Dork with led lights, then turn them all off */
send_cmd(SKBDCMD_SETLED); send_cmd(0xf); /* All on */
send_cmd(SKBDCMD_SETLED); send_cmd(0x0); /* All off */
spin_unlock_irq(&sunkbd_lock);
/* Register the /dev/kbd interface */
devfs_register (NULL, "kbd", DEVFS_FL_DEFAULT,
KBD_MAJOR, 0,
S_IFCHR | S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH,
&kbd_fops, NULL);
if (devfs_register_chrdev (KBD_MAJOR, "kbd", &kbd_fops)){
printk ("Could not register /dev/kbd device\n");
return;
}
return;
}
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