1#ifndef _ALPHA_TERMIOS_H
2#define _ALPHA_TERMIOS_H
3
4#include <asm/ioctls.h>
5#include <asm/termbits.h>
6
7struct sgttyb {
8	char	sg_ispeed;
9	char	sg_ospeed;
10	char	sg_erase;
11	char	sg_kill;
12	short	sg_flags;
13};
14
15struct tchars {
16	char	t_intrc;
17	char	t_quitc;
18	char	t_startc;
19	char	t_stopc;
20	char	t_eofc;
21	char	t_brkc;
22};
23
24struct ltchars {
25	char	t_suspc;
26	char	t_dsuspc;
27	char	t_rprntc;
28	char	t_flushc;
29	char	t_werasc;
30	char	t_lnextc;
31};
32
33struct winsize {
34	unsigned short ws_row;
35	unsigned short ws_col;
36	unsigned short ws_xpixel;
37	unsigned short ws_ypixel;
38};
39
40#define NCC 8
41struct termio {
42	unsigned short c_iflag;		/* input mode flags */
43	unsigned short c_oflag;		/* output mode flags */
44	unsigned short c_cflag;		/* control mode flags */
45	unsigned short c_lflag;		/* local mode flags */
46	unsigned char c_line;		/* line discipline */
47	unsigned char c_cc[NCC];	/* control characters */
48};
49
50/*
51 * c_cc characters in the termio structure.  Oh, how I love being
52 * backwardly compatible.  Notice that character 4 and 5 are
53 * interpreted differently depending on whether ICANON is set in
54 * c_lflag.  If it's set, they are used as _VEOF and _VEOL, otherwise
55 * as _VMIN and V_TIME.  This is for compatibility with OSF/1 (which
56 * is compatible with sysV)...
57 */
58#define _VINTR	0
59#define _VQUIT	1
60#define _VERASE	2
61#define _VKILL	3
62#define _VEOF	4
63#define _VMIN	4
64#define _VEOL	5
65#define _VTIME	5
66#define _VEOL2	6
67#define _VSWTC	7
68
69#ifdef __KERNEL__
70/*	eof=^D		eol=\0		eol2=\0		erase=del
71	werase=^W	kill=^U		reprint=^R	sxtc=\0
72	intr=^C		quit=^\		susp=^Z		<OSF/1 VDSUSP>
73	start=^Q	stop=^S		lnext=^V	discard=^U
74	vmin=\1		vtime=\0
75*/
76#define INIT_C_CC "\004\000\000\177\027\025\022\000\003\034\032\000\021\023\026\025\001\000"
77
78/*
79 * Translate a "termio" structure into a "termios". Ugh.
80 */
81
82#define user_termio_to_kernel_termios(a_termios, u_termio)			\
83({										\
84	struct termios *k_termios = (a_termios);				\
85	struct termio k_termio;							\
86	int canon, ret;								\
87										\
88	ret = copy_from_user(&k_termio, u_termio, sizeof(k_termio));		\
89	if (!ret) {								\
90		/* Overwrite only the low bits.  */				\
91		*(unsigned short *)&k_termios->c_iflag = k_termio.c_iflag;	\
92		*(unsigned short *)&k_termios->c_oflag = k_termio.c_oflag;	\
93		*(unsigned short *)&k_termios->c_cflag = k_termio.c_cflag;	\
94		*(unsigned short *)&k_termios->c_lflag = k_termio.c_lflag;	\
95		canon = k_termio.c_lflag & ICANON;				\
96										\
97		k_termios->c_cc[VINTR]  = k_termio.c_cc[_VINTR];		\
98		k_termios->c_cc[VQUIT]  = k_termio.c_cc[_VQUIT];		\
99		k_termios->c_cc[VERASE] = k_termio.c_cc[_VERASE];		\
100		k_termios->c_cc[VKILL]  = k_termio.c_cc[_VKILL];		\
101		k_termios->c_cc[VEOL2]  = k_termio.c_cc[_VEOL2];		\
102		k_termios->c_cc[VSWTC]  = k_termio.c_cc[_VSWTC];		\
103		k_termios->c_cc[canon ? VEOF : VMIN]  = k_termio.c_cc[_VEOF];	\
104		k_termios->c_cc[canon ? VEOL : VTIME] = k_termio.c_cc[_VEOL];	\
105	}									\
106	ret;									\
107})
108
109/*
110 * Translate a "termios" structure into a "termio". Ugh.
111 *
112 * Note the "fun" _VMIN overloading.
113 */
114#define kernel_termios_to_user_termio(u_termio, a_termios)		\
115({									\
116	struct termios *k_termios = (a_termios);			\
117	struct termio k_termio;						\
118	int canon;							\
119									\
120	k_termio.c_iflag = k_termios->c_iflag;				\
121	k_termio.c_oflag = k_termios->c_oflag;				\
122	k_termio.c_cflag = k_termios->c_cflag;				\
123	canon = (k_termio.c_lflag = k_termios->c_lflag) & ICANON;	\
124									\
125	k_termio.c_line = k_termios->c_line;				\
126	k_termio.c_cc[_VINTR]  = k_termios->c_cc[VINTR];		\
127	k_termio.c_cc[_VQUIT]  = k_termios->c_cc[VQUIT];		\
128	k_termio.c_cc[_VERASE] = k_termios->c_cc[VERASE];		\
129	k_termio.c_cc[_VKILL]  = k_termios->c_cc[VKILL];		\
130	k_termio.c_cc[_VEOF]   = k_termios->c_cc[canon ? VEOF : VMIN];	\
131	k_termio.c_cc[_VEOL]   = k_termios->c_cc[canon ? VEOL : VTIME];	\
132	k_termio.c_cc[_VEOL2]  = k_termios->c_cc[VEOL2];		\
133	k_termio.c_cc[_VSWTC]  = k_termios->c_cc[VSWTC];		\
134									\
135	copy_to_user(u_termio, &k_termio, sizeof(k_termio));		\
136})
137
138#define user_termios_to_kernel_termios(k, u) \
139	copy_from_user(k, u, sizeof(struct termios))
140
141#define kernel_termios_to_user_termios(u, k) \
142	copy_to_user(u, k, sizeof(struct termios))
143
144#endif	/* __KERNEL__ */
145
146#endif	/* _ALPHA_TERMIOS_H */
147