/* 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 */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef CONFIG_PCI #include #include #include #include #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 = { 0, 0 }; unsigned char kbd_read_mask = 0x01; /* modified by psaux.c */ unsigned char aux_device_present = 0x00; /* To make kernel/ksyms.c happy */ struct wait_queue * keypress_wait = NULL; void keyboard_wait_for_keypress(void) { sleep_on(&keypress_wait); } /* * 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; static int compose_led_on = 0; static int kbd_delay_ticks = HZ / 5; static int kbd_rate_ticks = HZ / 20; 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_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 /* Do to kbd_init() being called before rs_init(), and kbd_init() doing: * * init_bh(KEYBOARD_BH, kbd_bh); * mark_bh(KEYBOARD_BH); * * 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. * * Otherwise this would lead to the following (DaveM might want to look at): * * sparc64_dtlb_refbit_catch(), * do_sparc64_fault(), * kernel NULL pointer dereference at do_sparc64_fault + 0x2c0 ;-( */ static void nop_kbd_put_char(unsigned char c) { } static void (*kbd_put_char)(unsigned char) = nop_kbd_put_char; 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< 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, 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); del_timer (&auto_repeat_timer); if (kbd_rate_ticks) { auto_repeat_timer.expires = jiffies + kbd_rate_ticks; add_timer (&auto_repeat_timer); } restore_flags(flags); } /* #define SKBD_DEBUG */ /* This is our keyboard 'interrupt' routine. */ 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)); compute_shiftstate(); goto out; } #ifdef SKBD_DEBUG if(ch == 0x7f) printk("KBD"); 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; mark_bh(CONSOLE_BH); add_keyboard_randomness(keycode); 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 { 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); } 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; 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<slockstate = 0; } } else { /* maybe beep? */ /* we have at least to update shift_state */ compute_shiftstate(); } } out: mark_bh(KEYBOARD_BH); } 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.. attempt to prevent multiple entry */ last_keycode=1; rep = 0; } static void compose(void) { dead_key_next = 1; compose_led_on = 1; set_leds(); } 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); 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 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; jledmode = 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(); unsigned char 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); } } /* Support for keyboard "beeps". */ /* Timer routine to turn off the beep after the interval expires. */ static void sunkbd_kd_nosound(unsigned long __unused) { send_cmd(SKBDCMD_BELLOFF); } /* * 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 = { NULL, NULL, 0, 0, sunkbd_kd_nosound }; save_flags(flags); cli(); 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); restore_flags(flags); } extern void (*kd_mksound)(unsigned int hz, unsigned int ticks); __initfunc(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; 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; } 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 int kbd_active = 0; 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 long kbd_read (struct inode *inode, struct file *f, char *buffer, unsigned long 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 && !signal_pending(current)) { 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)){ copy_to_user_ret((Firm_event *)p, &kbd_queue [kbd_tail], sizeof(Firm_event), -EFAULT); #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 unsigned int kbd_poll (struct file *f, poll_table *wait) { poll_wait(&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 */ put_user_ret(sunkbd_type, (int *) arg, -EFAULT); break; case KIOCGTRANS: put_user_ret(TR_UNTRANS_EVENT, (int *) arg, -EFAULT); break; case KIOCTRANS: get_user_ret(value, (int *) arg, -EFAULT); if (value != TR_UNTRANS_EVENT) return -EINVAL; break; case KIOCLAYOUT: put_user_ret(sunkbd_layout, (int *) arg, -EFAULT); break; case KIOCSDIRECT: #ifndef CODING_NEW_DRIVER get_user_ret(value, (int *) arg, -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: get_user_ret(value, (int *) arg, -EFAULT); c = (unsigned char) value; switch (c) { case SKBDCMD_CLICK: case SKBDCMD_NOCLICK: send_cmd(c); 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: get_user_ret(c, (unsigned char *) arg, -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); setledstate(kbd_table + fg_console, leds); break; case KIOCGLED: put_user_ret(vcleds_to_sunkbd(getleds()), (unsigned char *) arg, -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; copy_to_user_ret((struct kbd_rate *)arg, &rate, sizeof(struct kbd_rate), -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; put_user_ret((count < 0) ? KBD_QSIZE - count : count, (int *) arg, -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) { kbd_active++; if (kbd_opened) return 0; kbd_opened = fg_console + 1; kbd_head = kbd_tail = 0; return 0; } static int kbd_close (struct inode *i, struct file *f) { if (--kbd_active) return 0; if (kbd_redirected) kbd_table [kbd_opened-1].kbdmode = VC_XLATE; kbd_redirected = 0; kbd_opened = 0; kbd_fasync (i, f, 0); return 0; } static struct file_operations kbd_fops = { NULL, /* seek */ kbd_read, /* read */ NULL, /* write */ NULL, /* readdir */ kbd_poll, /* poll */ kbd_ioctl, /* ioctl */ NULL, /* mmap */ kbd_open, /* open */ kbd_close, /* close */ NULL, /* fsync */ kbd_fasync, /* fasync */ NULL, /* check_media_change */ NULL, /* revalidate */ }; __initfunc(void 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; send_cmd(SKBDCMD_RESET); 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_MASK) ? 5 : 4)); } if(sunkbd_type == SUNKBD_TYPE2) sunkbd_clickp = 0; 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 */ /* Register the /dev/kbd interface */ if (register_chrdev (KBD_MAJOR, "kbd", &kbd_fops)){ printk ("Could not register /dev/kbd device\n"); return; } return; }