5 /*-
6  * SPDX-License-Identifier: BSD-2-Clause
90  * Note that callout is initialized as not MP-safe to make sure
98 	mtx_init(&(s)->ks_lock, "kbdmux", NULL, MTX_DEF|MTX_RECURSE)
100 	mtx_destroy(&(s)->ks_lock)
102 	mtx_lock(&(s)->ks_lock)
104 	mtx_unlock(&(s)->ks_lock)
106 	mtx_assert(&(s)->ks_lock, (w))
182 	if (state->ks_inq_length == KBDMUX_Q_SIZE)  in kbdmux_kbd_putc()
185 	p = (state->ks_inq_start + state->ks_inq_length) % KBDMUX_Q_SIZE;  in kbdmux_kbd_putc()
186 	state->ks_inq[p] = c;  in kbdmux_kbd_putc()
187 	state->ks_inq_length++;  in kbdmux_kbd_putc()
195 	if (state->ks_inq_length == 0)  in kbdmux_kbd_getc()
196 		return (-1);  in kbdmux_kbd_getc()
198 	c = state->ks_inq[state->ks_inq_start];  in kbdmux_kbd_getc()
199 	state->ks_inq_start = (state->ks_inq_start + 1) % KBDMUX_Q_SIZE;  in kbdmux_kbd_getc()
200 	state->ks_inq_length--;  in kbdmux_kbd_getc()
225 	if (state->ks_inq_length > 0)  in kbdmux_kbd_intr_timo()
226 		taskqueue_enqueue(taskqueue_swi_giant, &state->ks_task);  in kbdmux_kbd_intr_timo()
228 	/* re-schedule timeout */  in kbdmux_kbd_intr_timo()
229 	callout_schedule(&state->ks_timo, TICKS);  in kbdmux_kbd_intr_timo()
263 				continue; /* not open - discard the input */  in kbdmux_kbd_event()
269 		if (state->ks_inq_length > 0)  in kbdmux_kbd_event()
270 			taskqueue_enqueue(taskqueue_swi_giant, &state->ks_task);  in kbdmux_kbd_event()
280 		SLIST_FOREACH(k, &state->ks_kbds, next)  in kbdmux_kbd_event()
281 			if (k->kbd == kbd)  in kbdmux_kbd_event()
285 			kbd_release(k->kbd, &k->kbd);  in kbdmux_kbd_event()
286 			SLIST_REMOVE(&state->ks_kbds, k, kbdmux_kbd, next);  in kbdmux_kbd_event()
288 			k->kbd = NULL;  in kbdmux_kbd_event()
412 		TASK_INIT(&state->ks_task, 0, kbdmux_kbd_intr, (void *) kbd);  in kbdmux_init()
413 		callout_init(&state->ks_timo, 1);  in kbdmux_init()
414 		SLIST_INIT(&state->ks_kbds);  in kbdmux_init()
419 		state = (kbdmux_state_t *) kbd->kb_data;  in kbdmux_init()
420 		keymap = kbd->kb_keymap;  in kbdmux_init()
421 		accmap = kbd->kb_accentmap;  in kbdmux_init()
422 		fkeymap = kbd->kb_fkeytab;  in kbdmux_init()
423 		fkeymap_size = kbd->kb_fkeytab_size;  in kbdmux_init()
435 		kbd->kb_data = (void *)state;  in kbdmux_init()
442 		state->ks_mode = K_XLATE;  in kbdmux_init()
447 		kbd->kb_config = flags & ~KB_CONF_PROBE_ONLY;  in kbdmux_init()
449 		kbdmux_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state);  in kbdmux_init()
451 		delay[0] = kbd->kb_delay1;  in kbdmux_init()
452 		delay[1] = kbd->kb_delay2;  in kbdmux_init()
475 			state->ks_evdev = evdev;  in kbdmux_init()
476 		state->ks_evdev_state = 0;  in kbdmux_init()
490 		callout_reset(&state->ks_timo, TICKS, kbdmux_kbd_intr_timo, state);  in kbdmux_init()
519 	kbdmux_state_t	*state = (kbdmux_state_t *) kbd->kb_data;  in kbdmux_term()
524 	while ((k = SLIST_FIRST(&state->ks_kbds)) != NULL) {  in kbdmux_term()
525 		kbd_release(k->kbd, &k->kbd);  in kbdmux_term()
526 		SLIST_REMOVE_HEAD(&state->ks_kbds, next);  in kbdmux_term()
528 		k->kbd = NULL;  in kbdmux_term()
534 	callout_drain(&state->ks_timo);  in kbdmux_term()
535 	taskqueue_drain(taskqueue_swi_giant, &state->ks_task);  in kbdmux_term()
540 	evdev_free(state->ks_evdev);  in kbdmux_term()
547 	free(kbd->kb_keymap, M_KBDMUX);  in kbdmux_term()
548 	free(kbd->kb_accentmap, M_KBDMUX);  in kbdmux_term()
549 	free(kbd->kb_fkeytab, M_KBDMUX);  in kbdmux_term()
565 		(*kbd->kb_callback.kc_func)(kbd, KBDIO_KEYINPUT,  in kbdmux_intr()
566 					    kbd->kb_callback.kc_arg);  in kbdmux_intr()
613 	kbdmux_state_t	*state = (kbdmux_state_t *) kbd->kb_data;  in kbdmux_read()
620 	if (c != -1)  in kbdmux_read()
621 		kbd->kb_count ++;  in kbdmux_read()
623 	return (KBD_IS_ACTIVE(kbd)? c : -1);  in kbdmux_read()
632 	kbdmux_state_t	*state = (kbdmux_state_t *) kbd->kb_data;  in kbdmux_check()
639 	ready = (state->ks_inq_length > 0) ? TRUE : FALSE;  in kbdmux_check()
651 	kbdmux_state_t	*state = (kbdmux_state_t *) kbd->kb_data;  in kbdmux_read_char()
660 	if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) {  in kbdmux_read_char()
661 		action = state->ks_composed_char;  in kbdmux_read_char()
662 		state->ks_composed_char = 0;  in kbdmux_read_char()
676 	if (scancode == -1) {  in kbdmux_read_char()
677 		if (state->ks_polling != 0) {  in kbdmux_read_char()
680 			SLIST_FOREACH(k, &state->ks_kbds, next) {  in kbdmux_read_char()
681 				while (kbdd_check_char(k->kbd)) {  in kbdmux_read_char()
682 					scancode = kbdd_read_char(k->kbd, 0);  in kbdmux_read_char()
687 					if (!KBD_IS_BUSY(k->kbd))  in kbdmux_read_char()
694 			if (state->ks_inq_length > 0)  in kbdmux_read_char()
701 	/* XXX FIXME: check for -1 if wait == 1! */  in kbdmux_read_char()
703 	kbd->kb_count ++;  in kbdmux_read_char()
707 	if (evdev_rcpt_mask & EVDEV_RCPT_KBDMUX && state->ks_evdev != NULL) {  in kbdmux_read_char()
708 		uint16_t key = evdev_scancode2key(&state->ks_evdev_state,  in kbdmux_read_char()
712 			evdev_push_event(state->ks_evdev, EV_KEY,  in kbdmux_read_char()
714 			evdev_sync(state->ks_evdev);  in kbdmux_read_char()
718 	if (state->ks_evdev != NULL && evdev_is_grabbed(state->ks_evdev))  in kbdmux_read_char()
722 	/* return the byte as is for the K_RAW mode */  in kbdmux_read_char()
723 	if (state->ks_mode == K_RAW) {  in kbdmux_read_char()
730 	switch (state->ks_prefix) {  in kbdmux_read_char()
734 			if (state->ks_flags & COMPOSE) {  in kbdmux_read_char()
735 				state->ks_flags &= ~COMPOSE;  in kbdmux_read_char()
736 				if (state->ks_composed_char > UCHAR_MAX)  in kbdmux_read_char()
737 					state->ks_composed_char = 0;  in kbdmux_read_char()
741 			if (!(state->ks_flags & COMPOSE)) {  in kbdmux_read_char()
742 				state->ks_flags |= COMPOSE;  in kbdmux_read_char()
743 				state->ks_composed_char = 0;  in kbdmux_read_char()
748 			state->ks_prefix = scancode;  in kbdmux_read_char()
753 		state->ks_prefix = 0;  in kbdmux_read_char()
770 		case 0x46:	/* ctrl-pause/break on AT 101 (see below) */  in kbdmux_read_char()
832 		 * E1-1D-45 E1-9D-C5  in kbdmux_read_char()
833 		 * Ctrl-pause/break produces:  in kbdmux_read_char()
834 		 * E0-46 E0-C6 (See above.)  in kbdmux_read_char()
836 		state->ks_prefix = 0;  in kbdmux_read_char()
838 			state->ks_prefix = 0x1D;  in kbdmux_read_char()
842 		state->ks_prefix = 0;  in kbdmux_read_char()
852 		if (state->ks_flags & ALTS)  in kbdmux_read_char()
856 		if (state->ks_flags & CTLS)  in kbdmux_read_char()
861 	/* return the key code in the K_CODE mode */  in kbdmux_read_char()
862 	if (state->ks_mode == K_CODE) {  in kbdmux_read_char()
868 	if (state->ks_flags & COMPOSE) {  in kbdmux_read_char()
872 			state->ks_composed_char *= 10;  in kbdmux_read_char()
873 			state->ks_composed_char += keycode - 0x40;  in kbdmux_read_char()
874 			if (state->ks_composed_char > UCHAR_MAX) {  in kbdmux_read_char()
880 			state->ks_composed_char *= 10;  in kbdmux_read_char()
881 			state->ks_composed_char += keycode - 0x47;  in kbdmux_read_char()
882 			if (state->ks_composed_char > UCHAR_MAX) {  in kbdmux_read_char()
888 			state->ks_composed_char *= 10;  in kbdmux_read_char()
889 			state->ks_composed_char += keycode - 0x4E;  in kbdmux_read_char()
890 			if (state->ks_composed_char > UCHAR_MAX) {  in kbdmux_read_char()
896 			state->ks_composed_char *= 10;  in kbdmux_read_char()
897 			if (state->ks_composed_char > UCHAR_MAX) {  in kbdmux_read_char()
914 			if (state->ks_composed_char > 0) {  in kbdmux_read_char()
915 				state->ks_flags &= ~COMPOSE;  in kbdmux_read_char()
916 				state->ks_composed_char = 0;  in kbdmux_read_char()
926 			&state->ks_state, &state->ks_accents);  in kbdmux_read_char()
941 	kbdmux_state_t	*state = (kbdmux_state_t *) kbd->kb_data;  in kbdmux_check_char()
949 	if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char != 0))  in kbdmux_check_char()
952 		ready = (state->ks_inq_length > 0) ? TRUE : FALSE;  in kbdmux_check_char()
965 	kbdmux_state_t	*state = (kbdmux_state_t *) kbd->kb_data;  in kbdmux_ioctl()
968 	int		 error = 0, mode;  in kbdmux_ioctl()  local
980 		if (ki == NULL || ki->kb_unit < 0 || ki->kb_name[0] == '\0' ||  in kbdmux_ioctl()
981 		    strcmp(ki->kb_name, "*") == 0)  in kbdmux_ioctl()
986 		SLIST_FOREACH(k, &state->ks_kbds, next)  in kbdmux_ioctl()
987 			if (k->kbd->kb_unit == ki->kb_unit &&  in kbdmux_ioctl()
988 			    strcmp(k->kbd->kb_name, ki->kb_name) == 0)  in kbdmux_ioctl()
1004 		k->kbd = kbd_get_keyboard(  in kbdmux_ioctl()
1006 					ki->kb_name,  in kbdmux_ioctl()
1007 					ki->kb_unit,  in kbdmux_ioctl()
1008 					(void *) &k->kbd,  in kbdmux_ioctl()
1010 		if (k->kbd == NULL) {  in kbdmux_ioctl()
1017 		kbdd_enable(k->kbd);  in kbdmux_ioctl()
1018 		kbdd_clear_state(k->kbd);  in kbdmux_ioctl()
1020 		/* set K_RAW mode on slave keyboard */  in kbdmux_ioctl()
1021 		mode = K_RAW;  in kbdmux_ioctl()
1022 		error = kbdd_ioctl(k->kbd, KDSKBMODE, (caddr_t)&mode);  in kbdmux_ioctl()
1025 			mode = state->ks_state & LOCK_MASK;  in kbdmux_ioctl()
1026 			error = kbdd_ioctl(k->kbd, KDSKBSTATE, (caddr_t)&mode);  in kbdmux_ioctl()
1032 			kbd_release(k->kbd, &k->kbd);  in kbdmux_ioctl()
1033 			k->kbd = NULL;  in kbdmux_ioctl()
1037 			return (error); /* could not set mode */  in kbdmux_ioctl()
1040 		SLIST_INSERT_HEAD(&state->ks_kbds, k, next);  in kbdmux_ioctl()
1048 		if (ki == NULL || ki->kb_unit < 0 || ki->kb_name[0] == '\0' ||  in kbdmux_ioctl()
1049 		    strcmp(ki->kb_name, "*") == 0)  in kbdmux_ioctl()
1054 		SLIST_FOREACH(k, &state->ks_kbds, next)  in kbdmux_ioctl()
1055 			if (k->kbd->kb_unit == ki->kb_unit &&  in kbdmux_ioctl()
1056 			    strcmp(k->kbd->kb_name, ki->kb_name) == 0)  in kbdmux_ioctl()
1060 			error = kbd_release(k->kbd, &k->kbd);  in kbdmux_ioctl()
1062 				SLIST_REMOVE(&state->ks_kbds, k, kbdmux_kbd, next);  in kbdmux_ioctl()
1064 				k->kbd = NULL;  in kbdmux_ioctl()
1074 	case KDGKBMODE: /* get kyboard mode */  in kbdmux_ioctl()
1076 		*(int *)arg = state->ks_mode;  in kbdmux_ioctl()
1086 	case KDSKBMODE: /* set keyboard mode */  in kbdmux_ioctl()
1091 			if (state->ks_mode != K_XLATE) {  in kbdmux_ioctl()
1093 				state->ks_state &= ~LOCK_MASK;  in kbdmux_ioctl()
1094 				state->ks_state |= KBD_LED_VAL(kbd);  in kbdmux_ioctl()
1100 			if (state->ks_mode != *(int *)arg) {  in kbdmux_ioctl()
1102 				state->ks_mode = *(int *)arg;  in kbdmux_ioctl()
1138 		if (state->ks_evdev != NULL &&  in kbdmux_ioctl()
1140 			evdev_push_leds(state->ks_evdev, *(int *)arg);  in kbdmux_ioctl()
1143 		SLIST_FOREACH(k, &state->ks_kbds, next)  in kbdmux_ioctl()
1144 			(void)kbdd_ioctl(k->kbd, KDSETLED, arg);  in kbdmux_ioctl()
1151 		*(int *)arg = state->ks_state & LOCK_MASK;  in kbdmux_ioctl()
1170 		state->ks_state &= ~LOCK_MASK;  in kbdmux_ioctl()
1171 		state->ks_state |= *(int *)arg;  in kbdmux_ioctl()
1174 		SLIST_FOREACH(k, &state->ks_kbds, next)  in kbdmux_ioctl()
1175 			(void)kbdd_ioctl(k->kbd, KDSKBSTATE, arg);  in kbdmux_ioctl()
1197 			for (i = nitems(kbdelays) - 1; i > 0; i--)  in kbdmux_ioctl()
1200 			mode = i << 5;  in kbdmux_ioctl()
1203 			for (i = nitems(kbrates) - 1; i > 0; i--)  in kbdmux_ioctl()
1206 			mode |= i;  in kbdmux_ioctl()
1208 			mode = *(int *)arg;  in kbdmux_ioctl()
1210 		if (mode & ~0x7f) {  in kbdmux_ioctl()
1216 		kbd->kb_delay1 = kbdelays[(mode >> 5) & 3];  in kbdmux_ioctl()
1217 		kbd->kb_delay2 = kbrates[mode & 0x1f];  in kbdmux_ioctl()
1219 		if (state->ks_evdev != NULL &&  in kbdmux_ioctl()
1221 			evdev_push_repeats(state->ks_evdev, kbd);  in kbdmux_ioctl()
1224 		SLIST_FOREACH(k, &state->ks_kbds, next)  in kbdmux_ioctl()
1225 			(void)kbdd_ioctl(k->kbd, cmd, arg);  in kbdmux_ioctl()
1237 		state->ks_accents = 0;  in kbdmux_ioctl()
1241 		SLIST_FOREACH(k, &state->ks_kbds, next)  in kbdmux_ioctl()
1242 			(void)kbdd_ioctl(k->kbd, cmd, arg);  in kbdmux_ioctl()
1272 	state->ks_flags &= ~COMPOSE;  in kbdmux_clear_state_locked()
1273 	state->ks_polling = 0;  in kbdmux_clear_state_locked()
1274 	state->ks_state &= LOCK_MASK;	/* preserve locking key state */  in kbdmux_clear_state_locked()
1275 	state->ks_accents = 0;  in kbdmux_clear_state_locked()
1276 	state->ks_composed_char = 0;  in kbdmux_clear_state_locked()
1277 /*	state->ks_prefix = 0;		XXX */  in kbdmux_clear_state_locked()
1278 	state->ks_inq_length = 0;  in kbdmux_clear_state_locked()
1284 	kbdmux_state_t	*state = (kbdmux_state_t *) kbd->kb_data;  in kbdmux_clear_state()
1300 		return (-1);  in kbdmux_get_state()
1302 	bcopy(kbd->kb_data, buf, sizeof(kbdmux_state_t)); /* XXX locking? */  in kbdmux_get_state()
1316 	bcopy(buf, kbd->kb_data, sizeof(kbdmux_state_t)); /* XXX locking? */  in kbdmux_set_state()
1327 	kbdmux_state_t	*state = (kbdmux_state_t *) kbd->kb_data;  in kbdmux_poll()
1333 		state->ks_polling++;  in kbdmux_poll()
1335 		state->ks_polling--;  in kbdmux_poll()
1338 	SLIST_FOREACH(k, &state->ks_kbds, next)  in kbdmux_poll()
1339 		kbdd_poll(k->kbd, on);  in kbdmux_poll()
1373 	keyboard_switch_t	*sw;  in kbdmux_modevent()  local
1382 		if ((sw = kbd_get_switch(KEYBOARD_NAME)) == NULL) {  in kbdmux_modevent()
1389 		if ((error = (*sw->probe)(0, NULL, 0)) != 0 ||  in kbdmux_modevent()
1390 		    (error = (*sw->init)(0, &kbd, NULL, 0)) != 0)  in kbdmux_modevent()
1395 			(*sw->term)(kbd);  in kbdmux_modevent()
1400 		if ((error = (*sw->enable)(kbd)) != 0)  in kbdmux_modevent()
1405 		if ((sw = kbd_get_switch(KEYBOARD_NAME)) == NULL) {  in kbdmux_modevent()
1412 			(*sw->disable)(kbd);  in kbdmux_modevent()
1416 			(*sw->term)(kbd);  in kbdmux_modevent()