1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2003 Marcel Moolenaar
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 */
30
31#ifndef _DEV_UART_DEV_NS8250_H_
32#define _DEV_UART_DEV_NS8250_H_
33
34/*
35 * High-level UART interface.
36 */
37struct ns8250_softc {
38	struct uart_softc base;
39	uint8_t		fcr;
40	uint8_t		ier;
41	uint8_t		mcr;
42
43	uint8_t		ier_mask;
44	uint8_t		ier_rxbits;
45	uint8_t		busy_detect;
46};
47
48extern struct uart_ops uart_ns8250_ops;
49
50int ns8250_bus_attach(struct uart_softc *);
51int ns8250_bus_detach(struct uart_softc *);
52int ns8250_bus_flush(struct uart_softc *, int);
53int ns8250_bus_getsig(struct uart_softc *);
54int ns8250_bus_ioctl(struct uart_softc *, int, intptr_t);
55int ns8250_bus_ipend(struct uart_softc *);
56int ns8250_bus_param(struct uart_softc *, int, int, int, int);
57int ns8250_bus_probe(struct uart_softc *);
58int ns8250_bus_receive(struct uart_softc *);
59int ns8250_bus_setsig(struct uart_softc *, int);
60int ns8250_bus_transmit(struct uart_softc *);
61void ns8250_bus_grab(struct uart_softc *);
62void ns8250_bus_ungrab(struct uart_softc *);
63
64#endif /* _DEV_UART_DEV_NS8250_H_ */
65