Attachment #211610 for bug #233884

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#define	UKBD_EMULATE_ATSCANCODE	       1
#define	UKBD_DRIVER_NAME          "ukbd"
#define	UKBD_NKEYCODE                 256 /* units */
#define	UKBD_IN_BUF_SIZE  (4 * UKBD_NKEYCODE) /* scancodes */
#define	UKBD_IN_BUF_FULL  ((UKBD_IN_BUF_SIZE / 2) - 1)	/* scancodes */
#define	UKBD_IN_BUF_FULL  ((UKBD_IN_BUF_SIZE / 2) - 1)	/* bytes */
#define	UKBD_NFKEY        (sizeof(fkey_tab)/sizeof(fkey_tab[0]))	/* units */
#define	UKBD_BUFFER_SIZE	      64	/* bytes */
#define	UKBD_KEY_PRESSED(map, key) \
	((map)[(key) / 64] & (1ULL << ((key) % 64)))

#define	MOD_EJECT	0x01
#define	MOD_FN		0x02

struct ukbd_data {
	uint64_t bitmap[howmany(UKBD_NKEYCODE, 64)];
#define	MOD_CONTROL_L	0x01
#define	MOD_CONTROL_R	0x10
#define	MOD_SHIFT_L	0x02
#define	MOD_SHIFT_R	0x20
#define	MOD_ALT_L	0x04
#define	MOD_ALT_R	0x40
#define	MOD_WIN_L	0x08
#define	MOD_WIN_R	0x80
/* internal */
#define	MOD_EJECT	0x0100
#define	MOD_FN		0x0200
	uint8_t	keycode[UKBD_NKEYCODE];
};

enum {

	keymap_t sc_keymap;
	accentmap_t sc_accmap;
	fkeytab_t sc_fkeymap[UKBD_NFKEY];
	uint64_t sc_loc_key_valid[howmany(UKBD_NKEYCODE, 64)];
	struct hid_location sc_loc_apple_eject;
	struct hid_location sc_loc_apple_fn;
	struct hid_location sc_loc_key[UKBD_NKEYCODE];
	struct hid_location sc_loc_ctrl_r;
	struct hid_location sc_loc_shift_l;
	struct hid_location sc_loc_shift_r;
	struct hid_location sc_loc_alt_l;
	struct hid_location sc_loc_alt_r;
	struct hid_location sc_loc_win_l;
	struct hid_location sc_loc_win_r;
	struct hid_location sc_loc_events;
	struct hid_location sc_loc_numlock;
	struct hid_location sc_loc_capslock;
	struct hid_location sc_loc_scrolllock;


	sbintime_t sc_co_basetime;
	int	sc_delay;
	uint32_t sc_repeat_time;
	uint32_t sc_otime[UKBD_NKEYCODE];
	uint32_t sc_input[UKBD_IN_BUF_SIZE];	/* input buffer */
	uint32_t sc_time_ms;
	uint32_t sc_composed_char;	/* composed char code, if non-zero */

#define	UKBD_FLAG_APPLE_EJECT	0x00000040
#define	UKBD_FLAG_APPLE_FN	0x00000080
#define	UKBD_FLAG_APPLE_SWAP	0x00000100
#define	UKBD_FLAG_CTRL_L	0x00000400
#define	UKBD_FLAG_CTRL_R	0x00000800
#define	UKBD_FLAG_SHIFT_L	0x00001000
#define	UKBD_FLAG_SHIFT_R	0x00002000
#define	UKBD_FLAG_ALT_L		0x00004000
#define	UKBD_FLAG_ALT_R		0x00008000
#define	UKBD_FLAG_WIN_L		0x00010000
#define	UKBD_FLAG_WIN_R		0x00020000
#define	UKBD_FLAG_EVENTS	0x00040000
#define	UKBD_FLAG_NUMLOCK	0x00080000
#define	UKBD_FLAG_CAPSLOCK	0x00100000
#define	UKBD_FLAG_SCROLLLOCK 	0x00200000

	uint16_t sc_inputs;
	uint16_t sc_inputhead;
	uint16_t sc_inputtail;
	uint16_t sc_modifiers;

	uint8_t	sc_leds;		/* store for async led requests */
	uint8_t	sc_iface_index;

	uint8_t	sc_iface_no;
	uint8_t sc_id_apple_eject;
	uint8_t sc_id_apple_fn;
	uint8_t sc_id_loc_key[UKBD_NKEYCODE];
	uint8_t sc_id_ctrl_r;
	uint8_t sc_id_shift_l;
	uint8_t sc_id_shift_r;
	uint8_t sc_id_alt_l;
	uint8_t sc_id_alt_r;
	uint8_t sc_id_win_l;
	uint8_t sc_id_win_r;
	uint8_t sc_id_event;
	uint8_t sc_id_numlock;
	uint8_t sc_id_capslock;
	uint8_t sc_id_scrolllock;
	uint8_t sc_id_events;
	uint8_t sc_kbd_id;
	uint8_t sc_repeat_key;

	uint8_t sc_buffer[UKBD_BUFFER_SIZE];
};

#define	KEY_NONE	  0x00
#define	KEY_ERROR	  0x01

#define	KEY_PRESS	  0

#define	UKBD_UNLOCK()	USB_MTX_UNLOCK(&Giant)
#define	UKBD_LOCK_ASSERT()	USB_MTX_ASSERT(&Giant, MA_OWNED)

#define	NN 0				/* no translation */
	uint32_t mask, key;
};

static const struct ukbd_mods ukbd_mods[UKBD_NMOD] = {
	{MOD_CONTROL_L, 0xe0},
	{MOD_CONTROL_R, 0xe4},
	{MOD_SHIFT_L, 0xe1},
	{MOD_SHIFT_R, 0xe5},
	{MOD_ALT_L, 0xe2},
	{MOD_ALT_R, 0xe6},
	{MOD_WIN_L, 0xe3},
	{MOD_WIN_R, 0xe7},
};

#define	NN 0				/* no translation */
/*
 * Translate USB keycodes to AT keyboard scancodes.
 */

static void	ukbd_set_leds(struct ukbd_softc *, uint8_t);
static int	ukbd_set_typematic(keyboard_t *, int);
#ifdef UKBD_EMULATE_ATSCANCODE
static uint32_t	ukbd_atkeycode(int, const uint64_t *);
static int	ukbd_key2scan(struct ukbd_softc *, int, const uint64_t *, int);
#endif
static uint32_t	ukbd_read_char(keyboard_t *, int);
static void	ukbd_clear_state(keyboard_t *);

};
#endif

static bool
ukbd_any_key_pressed(struct ukbd_softc *sc)
{
	bool ret = false;
	unsigned i;

	for (i = 0; i != howmany(UKBD_NKEYCODE, 64); i++)
		ret |= (sc->sc_odata.bitmap[i] != 0);
	return (ret);
}

static bool
ukbd_any_key_valid(struct ukbd_softc *sc)
{
	bool ret = false;
	unsigned i;

	for (i = 0; i != howmany(UKBD_NKEYCODE, 64); i++)
		ret |= (sc->sc_loc_key_valid[i] != 0);
	return (ret);
}

static void

static void
ukbd_interrupt(struct ukbd_softc *sc)
{
	const uint32_t now = sc->sc_time_ms;
	unsigned key;
	bool old_keys;
	int32_t dtime;
	uint8_t key;
	uint8_t i;
	uint8_t j;

	UKBD_LOCK_ASSERT();

	old_keys = ukbd_any_key_pressed(sc);
		return;

	/* Check for key changes */
	for (key = 0; key < UKBD_NKEYCODE; key++) {
		const uint64_t delta =
		    sc->sc_odata.bitmap[key / 64] ^
		    sc->sc_ndata.bitmap[key / 64];
		const uint64_t mask =
		    1ULL << (key % 64);
				    ((n_mod & ukbd_mods[i].mask) ?
				    KEY_PRESS : KEY_RELEASE));
			}
		}
	}
	/* Check for released keys. */
	for (i = 0; i < UKBD_NKEYCODE; i++) {
		key = sc->sc_odata.keycode[i];
		if (key == 0) {
			continue;
		}
		for (j = 0; j < UKBD_NKEYCODE; j++) {
			if (sc->sc_ndata.keycode[j] == 0) {
				continue;
			}
			if (key == sc->sc_ndata.keycode[j]) {
				goto rfound;
			}
		}
		ukbd_put_key(sc, key | KEY_RELEASE);
rfound:	;
	}

		if (mask == 1 && delta == 0) {
			key += 63;
			continue;	/* skip empty areas */
		} else if (delta & mask) {
			if (sc->sc_odata.bitmap[key / 64] & mask) {
				ukbd_put_key(sc, key | KEY_RELEASE);
		sc->sc_ntime[i] = now + sc->sc_kbd.kb_delay1;
		for (j = 0; j < UKBD_NKEYCODE; j++) {
			if (sc->sc_odata.keycode[j] == 0) {
				continue;
			}
			if (key == sc->sc_odata.keycode[j]) {

				/* clear repeating key, if any */
				if (sc->sc_repeat_key == key)
					sc->sc_repeat_key = 0;
			} else {
				ukbd_put_key(sc, key | KEY_PRESS);

				/* set repeat time for last key */
				sc->sc_repeat_time = now + sc->sc_kbd.kb_delay1;
				sc->sc_repeat_key = key;
				if (dtime > 0) {
					/* time has not elapsed */
					goto pfound;
				}
				sc->sc_ntime[i] = now + sc->sc_kbd.kb_delay2;
				break;
			}
		}
	}
			/* New key - set initial delay and [re]start timer */
			sc->sc_co_basetime = sbinuptime();
			sc->sc_delay = sc->sc_kbd.kb_delay1;
			ukbd_start_timer(sc);
		}
		ukbd_put_key(sc, key | KEY_PRESS);

	/* synchronize old data with new data */
	sc->sc_odata = sc->sc_ndata;
	
	/* check if last key is still pressed */
	if (sc->sc_repeat_key != 0) {
		const int32_t dtime = (sc->sc_repeat_time - now);

		/* check if time has elapsed */
		if (dtime < 0) {
			ukbd_put_key(sc, sc->sc_repeat_key | KEY_PRESS);
			sc->sc_repeat_time = now + sc->sc_kbd.kb_delay2;
		}
pfound:	;
	}

	/* check for first new key and set initial delay and [re]start timer */
	if (old_keys == false && ukbd_any_key_pressed(sc) == true) {
		sc->sc_co_basetime = sbinuptime();
		sc->sc_delay = sc->sc_kbd.kb_delay1;
		ukbd_start_timer(sc);
	}

	/* wakeup keyboard system */

	ukbd_event_keyinput(sc);
}


	}
}

static uint32_t
ukbd_apple_fn(uint32_t keycode)
{
	switch (keycode) {
	case 0x28: return 0x49; /* RETURN -> INSERT */
	case 0x2a: return 0x4c; /* BACKSPACE -> DEL */

	}
}

static uint32_t
ukbd_apple_swap(uint32_t keycode)
{
	switch (keycode) {
	case 0x35: return 0x64;
	case 0x64: return 0x35;

{
	struct ukbd_softc *sc = usbd_xfer_softc(xfer);
	struct usb_page_cache *pc;
	uint32_t i;
	uint8_t offset;
	uint8_t id;
	uint8_t modifiers;
	int offset;
	int len;

	UKBD_LOCK_ASSERT();

		/* clear temporary storage */
		memset(&sc->sc_ndata, 0, sizeof(sc->sc_ndata));

		/* clear modifiers */
		modifiers = 0;

		/* scan through HID data */
		if ((sc->sc_flags & UKBD_FLAG_APPLE_EJECT) &&
		    (id == sc->sc_id_apple_eject)) {
			if (hid_get_data(sc->sc_buffer, len, &sc->sc_loc_apple_eject))
				modifiers |= MOD_EJECT;
			else
				sc->sc_modifiers &= ~MOD_EJECT;
		}
		if ((sc->sc_flags & UKBD_FLAG_APPLE_FN) &&
		    (id == sc->sc_id_apple_fn)) {
			if (hid_get_data(sc->sc_buffer, len, &sc->sc_loc_apple_fn))
				modifiers |= MOD_FN;
			else
				sc->sc_modifiers &= ~MOD_FN;
		}
		if ((sc->sc_flags & UKBD_FLAG_CTRL_L) &&
		    (id == sc->sc_id_ctrl_l)) {
			if (hid_get_data(sc->sc_buffer, len, &sc->sc_loc_ctrl_l))
			  sc->	sc_modifiers |= MOD_CONTROL_L;
			else
			  sc->	sc_modifiers &= ~MOD_CONTROL_L;
		}
		if ((sc->sc_flags & UKBD_FLAG_CTRL_R) &&
		    (id == sc->sc_id_ctrl_r)) {
			if (hid_get_data(sc->sc_buffer, len, &sc->sc_loc_ctrl_r))
				sc->sc_modifiers |= MOD_CONTROL_R;
			else
				sc->sc_modifiers &= ~MOD_CONTROL_R;
		}
		if ((sc->sc_flags & UKBD_FLAG_SHIFT_L) &&
		    (id == sc->sc_id_shift_l)) {
			if (hid_get_data(sc->sc_buffer, len, &sc->sc_loc_shift_l))
				sc->sc_modifiers |= MOD_SHIFT_L;
			else
				sc->sc_modifiers &= ~MOD_SHIFT_L;
		}
		if ((sc->sc_flags & UKBD_FLAG_SHIFT_R) &&
		    (id == sc->sc_id_shift_r)) {
			if (hid_get_data(sc->sc_buffer, len, &sc->sc_loc_shift_r))
				sc->sc_modifiers |= MOD_SHIFT_R;
			else
				sc->sc_modifiers &= ~MOD_SHIFT_R;
		}
		if ((sc->sc_flags & UKBD_FLAG_ALT_L) &&
		    (id == sc->sc_id_alt_l)) {
			if (hid_get_data(sc->sc_buffer, len, &sc->sc_loc_alt_l))
				sc->sc_modifiers |= MOD_ALT_L;
			else
				sc->sc_modifiers &= ~MOD_ALT_L;
		}
		if ((sc->sc_flags & UKBD_FLAG_ALT_R) &&
		    (id == sc->sc_id_alt_r)) {
			if (hid_get_data(sc->sc_buffer, len, &sc->sc_loc_alt_r))
				sc->sc_modifiers |= MOD_ALT_R;
			else
				sc->sc_modifiers &= ~MOD_ALT_R;
		}
		if ((sc->sc_flags & UKBD_FLAG_WIN_L) &&
		    (id == sc->sc_id_win_l)) {
			if (hid_get_data(sc->sc_buffer, len, &sc->sc_loc_win_l))
				sc->sc_modifiers |= MOD_WIN_L;
			else
				sc->sc_modifiers &= ~MOD_WIN_L;
		}
		if ((sc->sc_flags & UKBD_FLAG_WIN_R) &&
		    (id == sc->sc_id_win_r)) {
			if (hid_get_data(sc->sc_buffer, len, &sc->sc_loc_win_r))
				sc->sc_modifiers |= MOD_WIN_R;
			else
				sc->sc_modifiers &= ~MOD_WIN_R;
		}

		for (i = 0; i < UKBD_NKEYCODE; i++) {
			const uint64_t valid = sc->sc_loc_key_valid[i / 64];
			const uint64_t mask = 1ULL << (i % 64);

			if (mask == 1 && valid == 0) {
				i += 63;
				continue;	/* skip empty areas */
			} else if (id != sc->sc_id_loc_key[i]) {
				continue;	/* invalid HID ID */
			} else if (~valid & mask) {
				continue;	/* location is not valid */
			} else if (i == 0) {
				offset = sc->sc_loc_key[0].count;
				if (offset < 0 || offset > len)
					offset = len;
				while (offset--) {
					uint32_t key =
					    hid_get_data(sc->sc_buffer + offset, len - offset,
					    &sc->sc_loc_key[i]);
					if (modifiers & MOD_FN)
						key = ukbd_apple_fn(key);
					if (sc->sc_flags & UKBD_FLAG_APPLE_SWAP)
						key = ukbd_apple_swap(key);
					if (key == KEY_NONE || key == KEY_ERROR || key >= UKBD_NKEYCODE)
						continue;
					/* set key in bitmap */
					sc->sc_ndata.bitmap[key / 64] |= 1ULL << (key % 64);
				}
			} else if (hid_get_data(sc->sc_buffer, len, &sc->sc_loc_key[i])) {
				uint32_t key = i;

				if (modifiers & MOD_FN)
					key = ukbd_apple_fn(key);
				if (sc->sc_flags & UKBD_FLAG_APPLE_SWAP)
					key = ukbd_apple_swap(key);
				if (key == KEY_NONE || key == KEY_ERROR || key >= UKBD_NKEYCODE)
					continue;
				/* set key in bitmap */
				sc->sc_ndata.bitmap[key / 64] |= 1ULL << (key % 64);
			}
		}

#ifdef USB_DEBUG
		DPRINTF("modifiers = 0x%04x\n", modifiers);
		for (i = 0; i < UKBD_NKEYCODE; i++) {
			const uint64_t valid = sc->sc_ndata.bitmap[i / 64];
			const uint64_t mask = 1ULL << (i % 64);

			if (valid & mask)
				DPRINTF("Key 0x%02x pressed\n", i);
		}
#endif
		if (sc->sc_modifiers & MOD_FN) {
			for (i = 0; i < UKBD_NKEYCODE; i++) {
				sc->sc_ndata.keycode[i] = 
				    ukbd_apple_fn(sc->sc_ndata.keycode[i]);
			}
		}

		if (sc->sc_flags & UKBD_FLAG_APPLE_SWAP) {
			for (i = 0; i < UKBD_NKEYCODE; i++) {
				sc->sc_ndata.keycode[i] = 
				    ukbd_apple_swap(sc->sc_ndata.keycode[i]);
			}
		}

		ukbd_interrupt(sc);

	case USB_ST_SETUP:

ukbd_parse_hid(struct ukbd_softc *sc, const uint8_t *ptr, uint32_t len)
{
	uint32_t flags;
	uint32_t key;

	/* reset detected bits */
	sc->sc_flags &= ~UKBD_FLAG_HID_MASK;

	/* reset detected keys */
	memset(sc->sc_loc_key_valid, 0, sizeof(sc->sc_loc_key_valid));

	/* check if there is an ID byte */
	sc->sc_kbd_size = hid_report_size(ptr, len,
	    hid_input, &sc->sc_kbd_id);

			sc->sc_flags |= UKBD_FLAG_APPLE_FN;
		DPRINTFN(1, "Found Apple FN-key\n");
	}

	if (hid_locate(ptr, len,
	    HID_USAGE2(HUP_KEYBOARD, 0xE0),
	    hid_input, 0, &sc->sc_loc_ctrl_l, &flags,
	    &sc->sc_id_ctrl_l)) {
		if (flags & HIO_VARIABLE)
			sc->sc_flags |= UKBD_FLAG_CTRL_L;
		DPRINTFN(1, "Found left control\n");
	}
	if (hid_locate(ptr, len,
	    HID_USAGE2(HUP_KEYBOARD, 0xE4),
	    hid_input, 0, &sc->sc_loc_ctrl_r, &flags,
	    &sc->sc_id_ctrl_r)) {
		if (flags & HIO_VARIABLE)
			sc->sc_flags |= UKBD_FLAG_CTRL_R;
		DPRINTFN(1, "Found right control\n");
	}
	if (hid_locate(ptr, len,
	    HID_USAGE2(HUP_KEYBOARD, 0xE1),
	    hid_input, 0, &sc->sc_loc_shift_l, &flags,
	    &sc->sc_id_shift_l)) {
		if (flags & HIO_VARIABLE)
			sc->sc_flags |= UKBD_FLAG_SHIFT_L;
		DPRINTFN(1, "Found left shift\n");
	}
	if (hid_locate(ptr, len,
	    HID_USAGE2(HUP_KEYBOARD, 0xE5),
	    hid_input, 0, &sc->sc_loc_shift_r, &flags,
	    &sc->sc_id_shift_r)) {
		if (flags & HIO_VARIABLE)
			sc->sc_flags |= UKBD_FLAG_SHIFT_R;
		DPRINTFN(1, "Found right shift\n");
	}
	if (hid_locate(ptr, len,
	    HID_USAGE2(HUP_KEYBOARD, 0xE2),
	    hid_input, 0, &sc->sc_loc_alt_l, &flags,
	    &sc->sc_id_alt_l)) {
		if (flags & HIO_VARIABLE)
			sc->sc_flags |= UKBD_FLAG_ALT_L;
		DPRINTFN(1, "Found left alt\n");
	}
	if (hid_locate(ptr, len,
	    HID_USAGE2(HUP_KEYBOARD, 0xE6),
	    hid_input, 0, &sc->sc_loc_alt_r, &flags,
	    &sc->sc_id_alt_r)) {
		if (flags & HIO_VARIABLE)
			sc->sc_flags |= UKBD_FLAG_ALT_R;
		DPRINTFN(1, "Found right alt\n");
	}
	if (hid_locate(ptr, len,
	    HID_USAGE2(HUP_KEYBOARD, 0xE3),
	    hid_input, 0, &sc->sc_loc_win_l, &flags,
	    &sc->sc_id_win_l)) {
		if (flags & HIO_VARIABLE)
			sc->sc_flags |= UKBD_FLAG_WIN_L;
		DPRINTFN(1, "Found left GUI\n");
	}
	if (hid_locate(ptr, len,
	    HID_USAGE2(HUP_KEYBOARD, 0xE7),
	    hid_input, 0, &sc->sc_loc_win_r, &flags,
	    &sc->sc_id_win_r)) {
		if (flags & HIO_VARIABLE)
			sc->sc_flags |= UKBD_FLAG_WIN_R;
		DPRINTFN(1, "Found right GUI\n");
	}
	/* figure out event buffer */
	if (hid_locate(ptr, len,
	    HID_USAGE2(HUP_KEYBOARD, 0x00),
	    hid_input, 0, &sc->sc_loc_key[0], &flags,
	    &sc->sc_id_loc_key[0])) {
		if (flags & HIO_VARIABLE) {
			DPRINTFN(1, "Ignoring keyboard event control\n");
		} else {
			sc->sc_loc_key_valid[0] |= 1;
			DPRINTFN(1, "Found keyboard event array\n");
		}
	}

	/* figure out the keys */
	for (key = 1; key != UKBD_NKEYCODE; key++) {
		if (hid_locate(ptr, len,
		    HID_USAGE2(HUP_KEYBOARD, key),
		    hid_input, 0, &sc->sc_loc_key[key], &flags,
		    &sc->sc_id_loc_key[key])) {
			if (flags & HIO_VARIABLE) {
				sc->sc_loc_key_valid[key / 64] |=
				    1ULL << (key % 64);
				DPRINTFN(1, "Found key 0x%02x\n", key);
			}
		}
	}

	/* figure out leds on keyboard */
	sc->sc_led_size = hid_report_size(ptr, len,
	    hid_output, NULL);


	/* check if we should use the boot protocol */
	if (usb_test_quirk(uaa, UQ_KBD_BOOTPROTO) ||
	    (err != 0) || ukbd_any_key_valid(sc) == false) {

		DPRINTF("Forcing boot protocol\n");


	++(kbd->kb_count);

#ifdef UKBD_EMULATE_ATSCANCODE
	keycode = ukbd_atkeycode(usbcode, sc->sc_ndata.bitmap);
	if (keycode == NN) {
		return -1;
	}
	return (ukbd_key2scan(sc, keycode, sc->sc_ndata.bitmap,
	    (usbcode & KEY_RELEASE)));
#else					/* !UKBD_EMULATE_ATSCANCODE */
	return (usbcode);


#ifdef UKBD_EMULATE_ATSCANCODE
	/* USB key index -> key code -> AT scan code */
	keycode = ukbd_atkeycode(usbcode, sc->sc_ndata.bitmap);
	if (keycode == NN) {
		return (NOKEY);
	}
	/* return an AT scan code for the K_RAW mode */
	if (sc->sc_mode == K_RAW) {
		return (ukbd_key2scan(sc, keycode, sc->sc_ndata.bitmap,
		    (usbcode & KEY_RELEASE)));
	}
#else					/* !UKBD_EMULATE_ATSCANCODE */

#endif
	memset(&sc->sc_ndata, 0, sizeof(sc->sc_ndata));
	memset(&sc->sc_odata, 0, sizeof(sc->sc_odata));
	sc->sc_repeat_time = 0;
	sc->sc_repeat_key = 0;
}

/* save the internal state, not used */


#ifdef UKBD_EMULATE_ATSCANCODE
static uint32_t
ukbd_atkeycode(int usbcode, const uint64_t *bitmap)
{
	uint32_t keycode;

	keycode = ukbd_trtab[KEY_INDEX(usbcode)];

	/*
	 * Translate Alt-PrintScreen to SysRq.
	 *

	 * is routine.
	 */
	if ((keycode == 0x5c || keycode == 0x7e) &&
	    (UKBD_KEY_PRESSED(bitmap, 0xe2 /* ALT-L */) ||
	     UKBD_KEY_PRESSED(bitmap, 0xe6 /* ALT-R */)))
		return (0x54);
	return (keycode);
}

static int
ukbd_key2scan(struct ukbd_softc *sc, int code, const uint64_t *bitmap, int up)
{
	static const int scan[] = {
		/* 89 */

		code = scan[code - 89];
	}
	/* PrintScreen */
	if (code == 0x137 && (!(
	    UKBD_KEY_PRESSED(bitmap, 0xe0 /* CTRL-L */) ||
	    UKBD_KEY_PRESSED(bitmap, 0xe4 /* CTRL-R */) ||
	    UKBD_KEY_PRESSED(bitmap, 0xe1 /* SHIFT-L */) ||
	    UKBD_KEY_PRESSED(bitmap, 0xe5 /* SHIFT-R */)))) {
		code |= SCAN_PREFIX_SHIFT;
	}
	/* Pause/Break */
	if ((code == 0x146) && (!(
	    UKBD_KEY_PRESSED(bitmap, 0xe0 /* CTRL-L */) ||
	    UKBD_KEY_PRESSED(bitmap, 0xe4 /* CTRL-R */)))) {
		code = (0x45 | SCAN_PREFIX_E1 | SCAN_PREFIX_CTL);
	}
	code |= (up ? SCAN_RELEASE : SCAN_PRESS);

Return to bug 233884