patch-1.3.96 linux/drivers/sbus/char/sunkbd.c
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- Lines: 1318
- Date:
Thu Apr 25 13:27:42 1996
- Orig file:
v1.3.95/linux/drivers/sbus/char/sunkbd.c
- Orig date:
Thu Jan 1 02:00:00 1970
diff -u --recursive --new-file v1.3.95/linux/drivers/sbus/char/sunkbd.c linux/drivers/sbus/char/sunkbd.c
@@ -0,0 +1,1317 @@
+/* keyboard.c: Sun keyboard driver.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Added vuid event generation and /dev/kbd device for SunOS
+ * compatibility - Miguel (miguel@nuclecu.unam.mx)
+ */
+
+#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 <asm/kbio.h>
+#include <asm/vuid_event.h>
+#include <asm/delay.h>
+#include <asm/bitops.h>
+#include <asm/oplib.h>
+
+#include "../../char/kbd_kern.h"
+#include "../../char/diacr.h"
+#include "../../char/vt_kern.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);
+
+unsigned char kbd_read_mask = 0x01; /* modified by psaux.c */
+
+/*
+ * 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] = {0, };
+/* keyboard key bitmap */
+#define BITS_PER_LONG (8*sizeof(unsigned long))
+static unsigned long key_down[256/BITS_PER_LONG] = { 0, };
+
+void push_kbd (int scan);
+int kbd_redirected = 0;
+
+static int dead_key_next = 0;
+/*
+ * 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.
+ */
+/*static*/ int shift_state = 0;
+static int npadch = -1; /* -1 or number assembled on pad */
+static unsigned char diacr = 0;
+static char rep = 0; /* 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 = NULL;
+
+extern 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_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 */
+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
+};
+
+const int NR_TYPES = SIZE(max_vals);
+
+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;
+
+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 0x22
+
+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
+
+extern void kbd_put_char(unsigned char ch);
+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;
+ 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 */
+};
+
+int 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 getkeycode(unsigned int scancode)
+{
+ return
+ (scancode < SC_LIM || scancode > 255) ? -EINVAL :
+ (scancode < 128) ? high_keys[scancode - SC_LIM] :
+ e0_keys[scancode - 128];
+}
+
+void sunkbd_inchar(unsigned char ch, unsigned char status, struct pt_regs *regs);
+static void keyboard_timer (unsigned long ignored);
+
+static struct timer_list
+auto_repeat_timer = { NULL, NULL, 0, 0, keyboard_timer };
+
+/* Keeps track of the last pressed key */
+static unsigned char last_keycode;
+
+static void
+keyboard_timer (unsigned long ignored)
+{
+ unsigned long flags;
+
+ save_flags(flags); cli();
+
+ /* Auto repeat: send regs = 0 to indicate autorepeat */
+ sunkbd_inchar (last_keycode, 0, 0);
+ del_timer (&auto_repeat_timer);
+ auto_repeat_timer.expires = jiffies + HZ/20;
+ add_timer (&auto_repeat_timer);
+ restore_flags(flags);
+}
+
+/* #define SKBD_DEBUG */
+/* This is our keyboard 'interrupt' routine. */
+void sunkbd_inchar(unsigned char ch, unsigned char status, 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;
+ return;
+ }
+ if(ch == SKBD_LYOUT) {
+ kbd_layout_pending = 1;
+ return;
+ }
+ if(kbd_reset_pending) {
+ sunkbd_type = ch;
+ kbd_reset_pending = 0;
+ if(ch == SUNKBD_TYPE4)
+ send_cmd(SKBDCMD_GLAYOUT);
+ return;
+ } else if(kbd_layout_pending) {
+ sunkbd_layout = ch;
+ kbd_layout_pending = 0;
+ return;
+ } else if(ch == SKBD_ALLUP) {
+ /* eat it */
+ return;
+ }
+#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;
+
+ mark_bh(KEYBOARD_BH);
+ do_poke_blanked_console = 1;
+ mark_bh(CONSOLE_BH);
+ kbd = kbd_table + fg_console;
+ tty = ttytab[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 {
+ auto_repeat_timer.expires = jiffies+HZ/5;
+ add_timer (&auto_repeat_timer);
+ rep = set_bit(keycode, key_down);
+ }
+
+ if(raw_mode)
+ return;
+
+ if(kbd->kbdmode == VC_MEDIUMRAW) {
+ put_queue(keycode + up_flag);
+ return;
+ }
+
+ /*
+ * 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;
+ 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 */
+ compute_shiftstate();
+ }
+ }
+}
+
+static void put_queue(int ch)
+{
+ wake_up(&keypress_wait);
+ if (tty) {
+ tty_insert_flip_char(tty, ch, 0);
+ tty_schedule_flip(tty);
+ }
+}
+
+static void puts_queue(char *cp)
+{
+ wake_up(&keypress_wait);
+ if (!tty)
+ return;
+
+ while (*cp) {
+ tty_insert_flip_char(tty, *cp, 0);
+ cp++;
+ }
+ tty_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);
+ tty_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.. atempt to prevent multiple entry */
+ last_keycode=1;
+ rep = 0;
+}
+
+static void compose(void)
+{
+ dead_key_next = 1;
+}
+
+int spawnpid, spawnsig;
+
+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()
+{
+ 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);
+
+ 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 '"'
+static unsigned char ret_diacr[] =
+ {A_GRAVE, A_ACUTE, A_CFLEX, A_TILDE, A_DIAER };
+
+/* 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;
+ want_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 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 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 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 void kbd_bh(void)
+{
+ unsigned char leds = getleds();
+
+ if (leds != ledstate) {
+ ledstate = leds;
+ send_cmd(SKBDCMD_SETLED);
+ send_cmd(vcleds_to_sunkbd(leds));
+ }
+}
+
+int 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.modeflags = KBD_DEFMODE;
+ kbd0.kbdmode = VC_XLATE;
+
+ for (i = 0 ; i < MAX_NR_CONSOLES ; i++)
+ kbd_table[i] = kbd0;
+
+ ttytab = console_driver.table;
+
+ /* 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;
+ }
+ init_bh(KEYBOARD_BH, kbd_bh);
+ mark_bh(KEYBOARD_BH);
+ return 0;
+}
+
+/* /dev/kbd support */
+
+#define KBD_QSIZE 32
+static Firm_event kbd_queue [KBD_QSIZE];
+static int kbd_head, kbd_tail;
+char kbd_opened;
+static struct wait_queue *kbd_wait;
+static struct fasync_struct *kb_fasync;
+
+void
+push_kbd (int scan)
+{
+ int next = (kbd_head + 1) % KBD_QSIZE;
+
+ if (scan == KBD_IDLE)
+ return;
+ 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;
+ }
+ if (kb_fasync)
+ kill_fasync (kb_fasync, SIGIO);
+ wake_up_interruptible (&kbd_wait);
+}
+
+static int
+kbd_read (struct inode *inode, struct file *f, char *buffer, int count)
+{
+ struct wait_queue wait = { current, NULL };
+ 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);
+ while (kbd_head == kbd_tail && !(current->signal & ~current->blocked)){
+ current->state = TASK_INTERRUPTIBLE;
+ schedule ();
+ }
+ 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;
+ for (; p < end && kbd_head != kbd_tail; p += sizeof (Firm_event)){
+ *(Firm_event *)p = kbd_queue [kbd_tail];
+#ifdef KBD_DEBUG
+ printk ("[%s]", kbd_queue [kbd_tail].value == VKEY_UP ? "UP" : "DOWN");
+#endif
+ kbd_tail++;
+ kbd_tail %= KBD_QSIZE;
+ }
+ return p-buffer;
+}
+
+/* Needed by X */
+static int
+kbd_fasync (struct inode *inode, struct file *filp, int on)
+{
+ int retval;
+
+ retval = fasync_helper (inode, filp, on, &kb_fasync);
+ if (retval < 0)
+ return retval;
+ return 0;
+}
+
+static int
+kbd_select (struct inode *i, struct file *f, int sel_type, select_table *wait)
+{
+ if (sel_type != SEL_IN)
+ return 0;
+ if (kbd_head != kbd_tail)
+ return 1;
+ select_wait (&kbd_wait, wait);
+ return 0;
+}
+
+static int
+kbd_ioctl (struct inode *i, struct file *f, unsigned int cmd, unsigned long arg)
+{
+ switch (cmd){
+ case KIOCTYPE: /* return keyboard type */
+ if (verify_area (VERIFY_WRITE, (void *)arg, sizeof (int)))
+ return -EFAULT;
+ *(int *) arg = sunkbd_type;
+ break;
+ case KIOCGTRANS:
+ if (verify_area (VERIFY_WRITE, (void *) arg, sizeof (int)))
+ return -EFAULT;
+ *(int *) arg = TR_UNTRANS_EVENT;
+ break;
+ case KIOCTRANS:
+ if (verify_area (VERIFY_READ, (void *) arg, sizeof (int)))
+ return -EFAULT;
+ if (*(int *) arg != TR_UNTRANS_EVENT)
+ return -EINVAL;
+ break;
+ case KIOCLAYOUT:
+ if (verify_area (VERIFY_WRITE, (void *) arg, sizeof (int)))
+ return -EFAULT;
+ *(int *) arg = sunkbd_layout;
+ break;
+ case KIOCSDIRECT:
+ if (verify_area (VERIFY_WRITE, (void *) arg, sizeof (int)))
+ return -EFAULT;
+#ifndef CODING_NEW_DRIVER
+ if (*(int *) arg)
+ kbd_redirected = fg_console + 1;
+ else
+ kbd_redirected = 0;
+ kbd_table [fg_console].kbdmode = kbd_redirected ? VC_RAW : VC_XLATE;
+#endif
+ break;
+ case KIOCCMD:
+ /* Need to support beep on/off, keyclick on/off */
+ return 0;
+ case FIONREAD: /* return number of bytes in kbd queue */
+ {
+ int count;
+
+ if (verify_area (VERIFY_WRITE, (void *) arg, sizeof (int)))
+ return -EFAULT;
+ count = kbd_head - kbd_tail;
+ * (int *)arg = (count < 0) ? KBD_QSIZE - count : count;
+ 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)
+{
+ if (kbd_opened)
+ return 0;
+ kbd_opened = fg_console + 1;
+ kbd_head = kbd_tail = 0;
+ return 0;
+}
+
+static void
+kbd_close (struct inode *i, struct file *f)
+{
+ if (kbd_redirected)
+ kbd_table [kbd_opened-1].kbdmode = VC_XLATE;
+ kbd_redirected = 0;
+ kbd_opened = 0;
+
+ kbd_fasync (i, f, 0);
+}
+
+static struct
+file_operations kbd_fops =
+{
+ NULL, /* seek */
+ kbd_read, /* read */
+ NULL, /* write */
+ NULL, /* readdir */
+ kbd_select, /* select */
+ kbd_ioctl, /* ioctl */
+ NULL, /* mmap */
+ kbd_open, /* open */
+ kbd_close, /* close */
+ NULL, /* fsync */
+ kbd_fasync, /* fasync */
+ NULL, /* check_media_change */
+ NULL, /* revalidate */
+};
+
+void
+keyboard_zsinit(void)
+{
+ int timeout = 0;
+
+ /* Test out the leds */
+ sunkbd_type = 255;
+ send_cmd(SKBDCMD_RESET);
+ while((sunkbd_type==255) && timeout < 500000) {
+ udelay(100);
+ timeout += 20;
+ }
+
+ if(timeout>=500000) {
+ printk("keyboard: not present\n");
+ return;
+ }
+
+ if(sunkbd_type != SUNKBD_TYPE4) {
+ printk("Sun TYPE %d keyboard detected ", sunkbd_type);
+ } else {
+ udelay(200);
+ timeout=0;
+ while(timeout++ < 500000)
+ barrier();
+ printk("Sun TYPE %d keyboard detected ",
+ ((sunkbd_layout==SUNKBD_LOUT_TYP5) ? 5 : 4));
+ }
+ if(sunkbd_type == SUNKBD_TYPE2)
+ sunkbd_clickp = 0;
+
+ if(sunkbd_clickp)
+ printk("with keyclick\n");
+ else
+ 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 */
+
+ /* Register the /dev/kbd interface */
+ if (register_chrdev (KBD_MAJOR, "kbd", &kbd_fops)){
+ printk ("Could not register /dev/kbd device\n");
+ return;
+ }
+ return;
+}
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen, slshen@lbl.gov
with Sam's (original) version of this