xref: /freebsd/sys/dev/uart/uart_dev_ns8250.h (revision 9f44a47fd07924afc035991af15d84e6585dea4f)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
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  */
37 struct 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 
48 extern struct uart_ops uart_ns8250_ops;
49 
50 int ns8250_bus_attach(struct uart_softc *);
51 int ns8250_bus_detach(struct uart_softc *);
52 int ns8250_bus_flush(struct uart_softc *, int);
53 int ns8250_bus_getsig(struct uart_softc *);
54 int ns8250_bus_ioctl(struct uart_softc *, int, intptr_t);
55 int ns8250_bus_ipend(struct uart_softc *);
56 int ns8250_bus_param(struct uart_softc *, int, int, int, int);
57 int ns8250_bus_probe(struct uart_softc *);
58 int ns8250_bus_receive(struct uart_softc *);
59 int ns8250_bus_setsig(struct uart_softc *, int);
60 int ns8250_bus_transmit(struct uart_softc *);
61 void ns8250_bus_grab(struct uart_softc *);
62 void ns8250_bus_ungrab(struct uart_softc *);
63 
64 #endif /* _DEV_UART_DEV_NS8250_H_ */
65