1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
|
/*
* Copyright (c) 2003 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _DEV_UART_CPU_H_
#define _DEV_UART_CPU_H_
/*
* Low-level operations for use by console and/or debug port support.
*/
struct uart_ops {
int (*probe)(struct uart_bas *);
void (*init)(struct uart_bas *, int, int, int, int);
void (*term)(struct uart_bas *);
void (*putc)(struct uart_bas *, int);
int (*poll)(struct uart_bas *);
int (*getc)(struct uart_bas *);
};
extern struct uart_ops uart_i8251_ops;
extern struct uart_ops uart_ns8250_ops;
extern struct uart_ops uart_sab82532_ops;
extern struct uart_ops uart_z8530_ops;
/*
* Console and debug port device info.
*/
struct uart_softc;
struct uart_devinfo {
SLIST_ENTRY(uart_devinfo) next;
struct uart_ops ops;
struct uart_bas bas;
int baudrate;
int databits;
int stopbits;
int parity;
int type;
#define UART_DEV_CONSOLE 0
#define UART_DEV_DBGPORT 1
#define UART_DEV_KEYBOARD 2
int (*attach)(struct uart_softc*);
int (*detach)(struct uart_softc*);
void *cookie; /* Type dependent use. */
};
int uart_cpu_eqres(struct uart_bas *, struct uart_bas *);
int uart_cpu_getdev(int, struct uart_devinfo *);
void uart_add_sysdev(struct uart_devinfo*);
/*
* Operations for low-level access to the UART. Primarily for use
* by console and debug port logic.
*/
static __inline int
uart_probe(struct uart_devinfo *di)
{
return (di->ops.probe(&di->bas));
}
static __inline void
uart_init(struct uart_devinfo *di)
{
di->ops.init(&di->bas, di->baudrate, di->databits, di->stopbits,
di->parity);
}
static __inline void
uart_term(struct uart_devinfo *di)
{
di->ops.term(&di->bas);
}
static __inline void
uart_putc(struct uart_devinfo *di, int c)
{
di->ops.putc(&di->bas, c);
}
static __inline int
uart_poll(struct uart_devinfo *di)
{
return (di->ops.poll(&di->bas));
}
static __inline int
uart_getc(struct uart_devinfo *di)
{
return (di->ops.getc(&di->bas));
}
#endif /* _DEV_UART_CPU_H_ */
|
