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38 * @(#)tty.h 8.6 (Berkeley) 1/21/94
39 * $FreeBSD: src/sys/sys/tty.h,v 1.53.2.1 2001/02/26 04:23:21 jlemon Exp $
40 * $DragonFly: src/sys/sys/tty.h,v 1.5 2003/08/20 07:31:21 rob Exp $
46 #include <sys/termios.h>
47 #include <sys/select.h> /* For struct selinfo. */
48 #include <sys/queue.h>
51 * Clists are character lists, which is a variable length linked list
52 * of cblocks, with a count of the number of characters in the list.
55 int c_cc; /* Number of characters in the clist. */
56 int c_cbcount; /* Number of cblocks. */
57 int c_cbmax; /* Max # cblocks allowed for this clist. */
58 int c_cbreserved; /* # cblocks reserved for this clist. */
59 char *c_cf; /* Pointer to the first cblock. */
60 char *c_cl; /* Pointer to the last cblock. */
66 * Should be split in two, into device and tty drivers.
67 * Glue could be masks of what to echo and circular buffer
68 * (low, high, timeout).
71 struct clist t_rawq; /* Device raw input queue. */
72 long t_rawcc; /* Raw input queue statistics. */
73 struct clist t_canq; /* Device canonical queue. */
74 long t_cancc; /* Canonical queue statistics. */
75 struct clist t_outq; /* Device output queue. */
76 long t_outcc; /* Output queue statistics. */
77 int t_line; /* Interface to device drivers. */
78 dev_t t_dev; /* Device. */
79 int t_state; /* Device and driver (TS*) state. */
80 int t_flags; /* Tty flags. */
81 int t_timeout; /* Timeout for ttywait() */
82 struct pgrp *t_pgrp; /* Foreground process group. */
83 struct session *t_session; /* Enclosing session. */
84 struct sigio *t_sigio; /* Information for async I/O. */
85 struct selinfo t_rsel; /* Tty read/oob select. */
86 struct selinfo t_wsel; /* Tty write select. */
87 struct termios t_termios; /* Termios state. */
88 struct winsize t_winsize; /* Window size. */
90 void (*t_oproc) (struct tty *);
92 void (*t_stop) (struct tty *, int);
93 /* Set hardware state. */
94 int (*t_param) (struct tty *, struct termios *);
95 void *t_sc; /* XXX: net/if_sl.c:sl_softc. */
96 int t_column; /* Tty output column. */
97 int t_rocount, t_rocol; /* Tty. */
98 int t_ififosize; /* Total size of upstream fifos. */
99 int t_ihiwat; /* High water mark for input. */
100 int t_ilowat; /* Low water mark for input. */
101 speed_t t_ispeedwat; /* t_ispeed override for watermarks. */
102 int t_ohiwat; /* High water mark for output. */
103 int t_olowat; /* Low water mark for output. */
104 speed_t t_ospeedwat; /* t_ospeed override for watermarks. */
105 int t_gen; /* Generation number. */
106 SLIST_ENTRY(tty) t_list; /* Global chain of ttys for pstat(8) */
109 #define t_cc t_termios.c_cc
110 #define t_cflag t_termios.c_cflag
111 #define t_iflag t_termios.c_iflag
112 #define t_ispeed t_termios.c_ispeed
113 #define t_lflag t_termios.c_lflag
114 #define t_min t_termios.c_min
115 #define t_oflag t_termios.c_oflag
116 #define t_ospeed t_termios.c_ospeed
117 #define t_time t_termios.c_time
120 * User data unfortunately has to be copied through buffers on the way to
121 * and from clists. The buffers are on the stack so their sizes must be
124 #define IBUFSIZ 384 /* Should be >= max value of MIN. */
132 #define TTMAXHIWAT roundup(2048, CBSIZE)
133 #define TTMINHIWAT roundup(100, CBSIZE)
134 #define TTMAXLOWAT 256
135 #define TTMINLOWAT 32
138 /* These flags are kept in t_state. */
139 #define TS_SO_OLOWAT 0x00001 /* Wake up when output <= low water. */
140 #define TS_ASYNC 0x00002 /* Tty in async I/O mode. */
141 #define TS_BUSY 0x00004 /* Draining output. */
142 #define TS_CARR_ON 0x00008 /* Carrier is present. */
143 #define TS_FLUSH 0x00010 /* Outq has been flushed during DMA. */
144 #define TS_ISOPEN 0x00020 /* Open has completed. */
145 #define TS_TBLOCK 0x00040 /* Further input blocked. */
146 #define TS_TIMEOUT 0x00080 /* Wait for output char processing. */
147 #define TS_TTSTOP 0x00100 /* Output paused. */
149 #define TS_WOPEN 0x00200 /* Open in progress. */
151 #define TS_XCLUDE 0x00400 /* Tty requires exclusivity. */
153 /* State for intra-line fancy editing work. */
154 #define TS_BKSL 0x00800 /* State for lowercase \ work. */
155 #define TS_CNTTB 0x01000 /* Counting tab width, ignore FLUSHO. */
156 #define TS_ERASE 0x02000 /* Within a \.../ for PRTRUB. */
157 #define TS_LNCH 0x04000 /* Next character is literal. */
158 #define TS_TYPEN 0x08000 /* Retyping suspended input (PENDIN). */
159 #define TS_LOCAL (TS_BKSL | TS_CNTTB | TS_ERASE | TS_LNCH | TS_TYPEN)
162 #define TS_CAN_BYPASS_L_RINT 0x010000 /* Device in "raw" mode. */
163 #define TS_CONNECTED 0x020000 /* Connection open. */
164 #define TS_SNOOP 0x040000 /* Device is being snooped on. */
165 #define TS_SO_OCOMPLETE 0x080000 /* Wake up when output completes. */
166 #define TS_ZOMBIE 0x100000 /* Connection lost. */
168 /* Hardware flow-control-invoked bits. */
169 #define TS_CAR_OFLOW 0x200000 /* For MDMBUF (XXX handle in driver). */
171 #define TS_CTS_OFLOW 0x400000 /* For CCTS_OFLOW. */
172 #define TS_DSR_OFLOW 0x800000 /* For CDSR_OFLOW. */
175 /* Character type information. */
185 int sp_speed; /* Speed. */
186 int sp_code; /* Code. */
189 /* Modem control commands (driver). */
195 /* Flags on a character passed to ttyinput. */
196 #define TTY_CHARMASK 0x000000ff /* Character mask */
197 #define TTY_QUOTE 0x00000100 /* Character quoted */
198 #define TTY_ERRORMASK 0xff000000 /* Error mask */
199 #define TTY_FE 0x01000000 /* Framing error */
200 #define TTY_PE 0x02000000 /* Parity error */
201 #define TTY_OE 0x04000000 /* Overrun error */
202 #define TTY_BI 0x08000000 /* Break condition */
204 /* Is tp controlling terminal for p? */
205 #define isctty(p, tp) \
206 ((p)->p_session == (tp)->t_session && (p)->p_flag & P_CONTROLT)
208 /* Is p in background of tp? */
209 #define isbackground(p, tp) \
210 (isctty((p), (tp)) && (p)->p_pgrp != (tp)->t_pgrp)
212 /* Unique sleep addresses. */
213 #define TSA_CARR_ON(tp) ((void *)&(tp)->t_rawq)
214 #define TSA_HUP_OR_INPUT(tp) ((void *)&(tp)->t_rawq.c_cf)
215 #define TSA_OCOMPLETE(tp) ((void *)&(tp)->t_outq.c_cl)
216 #define TSA_OLOWAT(tp) ((void *)&(tp)->t_outq)
217 #define TSA_PTC_READ(tp) ((void *)&(tp)->t_outq.c_cf)
218 #define TSA_PTC_WRITE(tp) ((void *)&(tp)->t_rawq.c_cl)
219 #define TSA_PTS_READ(tp) ((void *)&(tp)->t_canq)
222 #ifdef MALLOC_DECLARE
223 MALLOC_DECLARE(M_TTYS);
225 extern struct tty *constty; /* Temporary virtual console. */
227 int b_to_q (char *cp, int cc, struct clist *q);
228 void catq (struct clist *from, struct clist *to);
229 void clist_alloc_cblocks (struct clist *q, int ccmax, int ccres);
230 void clist_free_cblocks (struct clist *q);
231 int getc (struct clist *q);
232 void ndflush (struct clist *q, int cc);
233 char *nextc (struct clist *q, char *cp, int *c);
234 void nottystop (struct tty *tp, int rw);
235 int putc (int c, struct clist *q);
236 int q_to_b (struct clist *q, char *cp, int cc);
237 void termioschars (struct termios *t);
238 int tputchar (int c, struct tty *tp);
239 int ttcompat (struct tty *tp, u_long com, caddr_t data, int flag);
240 int ttioctl (struct tty *tp, u_long com, void *data, int flag);
241 int ttread (struct tty *tp, struct uio *uio, int flag);
242 void ttrstrt (void *tp);
243 int ttsetcompat (struct tty *tp, u_long *com, caddr_t data,
244 struct termios *term);
245 void ttsetwater (struct tty *tp);
246 int ttspeedtab (int speed, struct speedtab *table);
247 int ttstart (struct tty *tp);
248 void ttwakeup (struct tty *tp);
249 int ttwrite (struct tty *tp, struct uio *uio, int flag);
250 void ttwwakeup (struct tty *tp);
251 void ttyblock (struct tty *tp);
252 void ttychars (struct tty *tp);
253 int ttycheckoutq (struct tty *tp, int wait);
254 int ttyclose (struct tty *tp);
255 void ttyflush (struct tty *tp, int rw);
256 void ttyfree (struct tty *tp);
257 void ttyinfo (struct tty *tp);
258 int ttyinput (int c, struct tty *tp);
259 int ttylclose (struct tty *tp, int flag);
260 struct tty *ttymalloc (struct tty *tp);
261 int ttymodem (struct tty *tp, int flag);
262 int ttyopen (dev_t device, struct tty *tp);
263 int ttypoll (dev_t dev, int events, struct thread *td);
264 int ttykqfilter (dev_t dev, struct knote *kn);
265 int ttyread (dev_t dev, struct uio *uio, int flag);
266 void ttyregister (struct tty *tp);
267 int ttysleep (struct tty *tp, void *chan, int slpflags, char *wmesg,
269 int ttywait (struct tty *tp);
270 int ttywrite (dev_t dev, struct uio *uio, int flag);
271 int unputc (struct clist *q);
275 #endif /* !_SYS_TTY_H_ */