1 #ifndef _LINUX_TTY_H
2 #define _LINUX_TTY_H
3
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11
12 #define MIN_NR_CONSOLES 1
13 #define MAX_NR_CONSOLES 63
14 #define MAX_NR_USER_CONSOLES 63
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16
17
18 #ifdef __KERNEL__
19 #include <linux/fs.h>
20 #include <linux/termios.h>
21 #include <linux/tqueue.h>
22 #include <linux/tty_driver.h>
23 #include <linux/tty_ldisc.h>
24
25 #include <asm/system.h>
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32
33
34 #define NR_PTYS 256
35 #define NR_LDISCS 16
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40
41 struct screen_info {
42 unsigned char orig_x;
43 unsigned char orig_y;
44 unsigned char unused1[2];
45 unsigned short orig_video_page;
46 unsigned char orig_video_mode;
47 unsigned char orig_video_cols;
48 unsigned short unused2;
49 unsigned short orig_video_ega_bx;
50 unsigned short unused3;
51 unsigned char orig_video_lines;
52 unsigned char orig_video_isVGA;
53 unsigned short orig_video_points;
54 };
55
56 extern struct screen_info screen_info;
57
58 #define ORIG_X (screen_info.orig_x)
59 #define ORIG_Y (screen_info.orig_y)
60 #define ORIG_VIDEO_MODE (screen_info.orig_video_mode)
61 #define ORIG_VIDEO_COLS (screen_info.orig_video_cols)
62 #define ORIG_VIDEO_EGA_BX (screen_info.orig_video_ega_bx)
63 #define ORIG_VIDEO_LINES (screen_info.orig_video_lines)
64 #define ORIG_VIDEO_ISVGA (screen_info.orig_video_isVGA)
65 #define ORIG_VIDEO_POINTS (screen_info.orig_video_points)
66
67 #define VIDEO_TYPE_MDA 0x10
68 #define VIDEO_TYPE_CGA 0x11
69 #define VIDEO_TYPE_EGAM 0x20
70 #define VIDEO_TYPE_EGAC 0x21
71 #define VIDEO_TYPE_VGAC 0x22
72
73 #define VIDEO_TYPE_TGAC 0x40
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79
80 #define __DISABLED_CHAR '\0'
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86
87 #define TTY_FLIPBUF_SIZE 512
88
89 struct tty_flip_buffer {
90 struct tq_struct tqueue;
91 unsigned char char_buf[2*TTY_FLIPBUF_SIZE];
92 char flag_buf[2*TTY_FLIPBUF_SIZE];
93 char *char_buf_ptr;
94 unsigned char *flag_buf_ptr;
95 int count;
96 int buf_num;
97 };
98
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100
101
102
103 #define TTY_NORMAL 0
104 #define TTY_BREAK 1
105 #define TTY_FRAME 2
106 #define TTY_PARITY 3
107 #define TTY_OVERRUN 4
108
109 #define INTR_CHAR(tty) ((tty)->termios->c_cc[VINTR])
110 #define QUIT_CHAR(tty) ((tty)->termios->c_cc[VQUIT])
111 #define ERASE_CHAR(tty) ((tty)->termios->c_cc[VERASE])
112 #define KILL_CHAR(tty) ((tty)->termios->c_cc[VKILL])
113 #define EOF_CHAR(tty) ((tty)->termios->c_cc[VEOF])
114 #define TIME_CHAR(tty) ((tty)->termios->c_cc[VTIME])
115 #define MIN_CHAR(tty) ((tty)->termios->c_cc[VMIN])
116 #define SWTC_CHAR(tty) ((tty)->termios->c_cc[VSWTC])
117 #define START_CHAR(tty) ((tty)->termios->c_cc[VSTART])
118 #define STOP_CHAR(tty) ((tty)->termios->c_cc[VSTOP])
119 #define SUSP_CHAR(tty) ((tty)->termios->c_cc[VSUSP])
120 #define EOL_CHAR(tty) ((tty)->termios->c_cc[VEOL])
121 #define REPRINT_CHAR(tty) ((tty)->termios->c_cc[VREPRINT])
122 #define DISCARD_CHAR(tty) ((tty)->termios->c_cc[VDISCARD])
123 #define WERASE_CHAR(tty) ((tty)->termios->c_cc[VWERASE])
124 #define LNEXT_CHAR(tty) ((tty)->termios->c_cc[VLNEXT])
125 #define EOL2_CHAR(tty) ((tty)->termios->c_cc[VEOL2])
126
127 #define _I_FLAG(tty,f) ((tty)->termios->c_iflag & (f))
128 #define _O_FLAG(tty,f) ((tty)->termios->c_oflag & (f))
129 #define _C_FLAG(tty,f) ((tty)->termios->c_cflag & (f))
130 #define _L_FLAG(tty,f) ((tty)->termios->c_lflag & (f))
131
132 #define I_IGNBRK(tty) _I_FLAG((tty),IGNBRK)
133 #define I_BRKINT(tty) _I_FLAG((tty),BRKINT)
134 #define I_IGNPAR(tty) _I_FLAG((tty),IGNPAR)
135 #define I_PARMRK(tty) _I_FLAG((tty),PARMRK)
136 #define I_INPCK(tty) _I_FLAG((tty),INPCK)
137 #define I_ISTRIP(tty) _I_FLAG((tty),ISTRIP)
138 #define I_INLCR(tty) _I_FLAG((tty),INLCR)
139 #define I_IGNCR(tty) _I_FLAG((tty),IGNCR)
140 #define I_ICRNL(tty) _I_FLAG((tty),ICRNL)
141 #define I_IUCLC(tty) _I_FLAG((tty),IUCLC)
142 #define I_IXON(tty) _I_FLAG((tty),IXON)
143 #define I_IXANY(tty) _I_FLAG((tty),IXANY)
144 #define I_IXOFF(tty) _I_FLAG((tty),IXOFF)
145 #define I_IMAXBEL(tty) _I_FLAG((tty),IMAXBEL)
146
147 #define O_OPOST(tty) _O_FLAG((tty),OPOST)
148 #define O_OLCUC(tty) _O_FLAG((tty),OLCUC)
149 #define O_ONLCR(tty) _O_FLAG((tty),ONLCR)
150 #define O_OCRNL(tty) _O_FLAG((tty),OCRNL)
151 #define O_ONOCR(tty) _O_FLAG((tty),ONOCR)
152 #define O_ONLRET(tty) _O_FLAG((tty),ONLRET)
153 #define O_OFILL(tty) _O_FLAG((tty),OFILL)
154 #define O_OFDEL(tty) _O_FLAG((tty),OFDEL)
155 #define O_NLDLY(tty) _O_FLAG((tty),NLDLY)
156 #define O_CRDLY(tty) _O_FLAG((tty),CRDLY)
157 #define O_TABDLY(tty) _O_FLAG((tty),TABDLY)
158 #define O_BSDLY(tty) _O_FLAG((tty),BSDLY)
159 #define O_VTDLY(tty) _O_FLAG((tty),VTDLY)
160 #define O_FFDLY(tty) _O_FLAG((tty),FFDLY)
161
162 #define C_BAUD(tty) _C_FLAG((tty),CBAUD)
163 #define C_CSIZE(tty) _C_FLAG((tty),CSIZE)
164 #define C_CSTOPB(tty) _C_FLAG((tty),CSTOPB)
165 #define C_CREAD(tty) _C_FLAG((tty),CREAD)
166 #define C_PARENB(tty) _C_FLAG((tty),PARENB)
167 #define C_PARODD(tty) _C_FLAG((tty),PARODD)
168 #define C_HUPCL(tty) _C_FLAG((tty),HUPCL)
169 #define C_CLOCAL(tty) _C_FLAG((tty),CLOCAL)
170 #define C_CIBAUD(tty) _C_FLAG((tty),CIBAUD)
171 #define C_CRTSCTS(tty) _C_FLAG((tty),CRTSCTS)
172
173 #define L_ISIG(tty) _L_FLAG((tty),ISIG)
174 #define L_ICANON(tty) _L_FLAG((tty),ICANON)
175 #define L_XCASE(tty) _L_FLAG((tty),XCASE)
176 #define L_ECHO(tty) _L_FLAG((tty),ECHO)
177 #define L_ECHOE(tty) _L_FLAG((tty),ECHOE)
178 #define L_ECHOK(tty) _L_FLAG((tty),ECHOK)
179 #define L_ECHONL(tty) _L_FLAG((tty),ECHONL)
180 #define L_NOFLSH(tty) _L_FLAG((tty),NOFLSH)
181 #define L_TOSTOP(tty) _L_FLAG((tty),TOSTOP)
182 #define L_ECHOCTL(tty) _L_FLAG((tty),ECHOCTL)
183 #define L_ECHOPRT(tty) _L_FLAG((tty),ECHOPRT)
184 #define L_ECHOKE(tty) _L_FLAG((tty),ECHOKE)
185 #define L_FLUSHO(tty) _L_FLAG((tty),FLUSHO)
186 #define L_PENDIN(tty) _L_FLAG((tty),PENDIN)
187 #define L_IEXTEN(tty) _L_FLAG((tty),IEXTEN)
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202
203 struct tty_struct {
204 int magic;
205 struct tty_driver driver;
206 struct tty_ldisc ldisc;
207 struct termios *termios, *termios_locked;
208 int pgrp;
209 int session;
210 kdev_t device;
211 unsigned long flags;
212 int count;
213 struct winsize winsize;
214 unsigned char stopped:1, hw_stopped:1, packet:1;
215 unsigned char ctrl_status;
216
217 struct tty_struct *link;
218 struct fasync_struct *fasync;
219 struct tty_flip_buffer flip;
220 int max_flip_cnt;
221 struct wait_queue *write_wait;
222 struct wait_queue *read_wait;
223 void *disc_data;
224 void *driver_data;
225
226 #define N_TTY_BUF_SIZE 4096
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231
232 unsigned int column;
233 unsigned char lnext:1, erasing:1, raw:1, real_raw:1, icanon:1;
234 unsigned char closing:1;
235 unsigned short minimum_to_wake;
236 unsigned overrun_time;
237 int num_overrun;
238 unsigned long process_char_map[256/(8*sizeof(unsigned long))];
239 char *read_buf;
240 int read_head;
241 int read_tail;
242 int read_cnt;
243 unsigned long read_flags[N_TTY_BUF_SIZE/(8*sizeof(unsigned long))];
244 int canon_data;
245 unsigned long canon_head;
246 unsigned int canon_column;
247 };
248
249
250 #define TTY_MAGIC 0x5401
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259
260 #define TTY_THROTTLED 0
261 #define TTY_IO_ERROR 1
262 #define TTY_SLAVE_CLOSED 2
263 #define TTY_EXCLUSIVE 3
264 #define TTY_DEBUG 4
265 #define TTY_DO_WRITE_WAKEUP 5
266 #define TTY_PUSH 6
267 #define TTY_CLOSING 7
268
269 #define TTY_WRITE_FLUSH(tty) tty_write_flush((tty))
270
271 extern void tty_write_flush(struct tty_struct *);
272
273 extern struct termios tty_std_termios;
274 extern struct tty_struct * redirect;
275 extern struct tty_ldisc ldiscs[];
276 extern int fg_console, last_console, want_console;
277
278 extern int kmsg_redirect;
279 extern struct wait_queue * keypress_wait;
280
281 extern unsigned long con_init(unsigned long);
282
283 extern int rs_init(void);
284 extern int lp_init(void);
285 extern int pty_init(void);
286 extern int tty_init(void);
287 extern int pcxe_init(void);
288 extern int vcs_init(void);
289 extern int cy_init(void);
290 extern int stl_init(void);
291 extern int stli_init(void);
292
293 extern int tty_paranoia_check(struct tty_struct *tty, kdev_t device,
294 const char *routine);
295 extern char *_tty_name(struct tty_struct *tty, char *buf);
296 extern char *tty_name(struct tty_struct *tty);
297 extern void tty_wait_until_sent(struct tty_struct * tty, int timeout);
298 extern int tty_check_change(struct tty_struct * tty);
299 extern void stop_tty(struct tty_struct * tty);
300 extern void start_tty(struct tty_struct * tty);
301 extern int tty_register_ldisc(int disc, struct tty_ldisc *new_ldisc);
302 extern int tty_register_driver(struct tty_driver *driver);
303 extern int tty_unregister_driver(struct tty_driver *driver);
304 extern int tty_read_raw_data(struct tty_struct *tty, unsigned char *bufp,
305 int buflen);
306 extern void tty_write_message(struct tty_struct *tty, char *msg);
307
308 extern int is_orphaned_pgrp(int pgrp);
309 extern int is_ignored(int sig);
310 extern int tty_signal(int sig, struct tty_struct *tty);
311 extern void tty_hangup(struct tty_struct * tty);
312 extern void tty_vhangup(struct tty_struct * tty);
313 extern void tty_unhangup(struct file *filp);
314 extern int tty_hung_up_p(struct file * filp);
315 extern void do_SAK(struct tty_struct *tty);
316 extern void disassociate_ctty(int priv);
317
318
319 extern struct tty_ldisc tty_ldisc_N_TTY;
320
321
322 extern int n_tty_ioctl(struct tty_struct * tty, struct file * file,
323 unsigned int cmd, unsigned long arg);
324
325
326
327 extern int rs_open(struct tty_struct * tty, struct file * filp);
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329
330
331 extern int pty_open(struct tty_struct * tty, struct file * filp);
332 extern int pcxe_open(struct tty_struct *tty, struct file *filp);
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334
335
336 extern int con_open(struct tty_struct * tty, struct file * filp);
337 extern void update_screen(int new_console);
338 extern void console_print(const char *);
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341
342 extern int vt_ioctl(struct tty_struct *tty, struct file * file,
343 unsigned int cmd, unsigned long arg);
344
345 #endif
346 #endif