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1.1 root 1: /* tty.h 6.1 83/07/29 */
2:
3: #ifdef KERNEL
4: #include "../h/ttychars.h"
5: #include "../h/ttydev.h"
6: #else
7: #include <sys/ttychars.h>
8: #include <sys/ttydev.h>
9: #endif
10:
11: /*
12: * A clist structure is the head of a linked list queue
13: * of characters. The characters are stored in blocks
14: * containing a link and CBSIZE (param.h) characters.
15: * The routines in tty_subr.c manipulate these structures.
16: */
17: struct clist {
18: int c_cc; /* character count */
19: char *c_cf; /* pointer to first char */
20: char *c_cl; /* pointer to last char */
21: };
22:
23: /*
24: * Per-tty structure.
25: *
26: * Should be split in two, into device and tty drivers.
27: * Glue could be masks of what to echo and circular buffer
28: * (low, high, timeout).
29: */
30: struct tty {
31: union {
32: struct {
33: struct clist T_rawq;
34: struct clist T_canq;
35: } t_t;
36: #define t_rawq t_nu.t_t.T_rawq /* raw characters or partial line */
37: #define t_canq t_nu.t_t.T_canq /* raw characters or partial line */
38: struct {
39: struct buf *T_bufp;
40: char *T_cp;
41: int T_inbuf;
42: int T_rec;
43: } t_n;
44: #define t_bufp t_nu.t_n.T_bufp /* buffer allocated to protocol */
45: #define t_cp t_nu.t_n.T_cp /* pointer into the ripped off buffer */
46: #define t_inbuf t_nu.t_n.T_inbuf /* number chars in the buffer */
47: #define t_rec t_nu.t_n.T_rec /* have a complete record */
48: } t_nu;
49: struct clist t_outq; /* device */
50: int (*t_oproc)(); /* device */
51: struct proc *t_rsel; /* tty */
52: struct proc *t_wsel;
53: caddr_t T_LINEP; /* ### */
54: caddr_t t_addr; /* ??? */
55: dev_t t_dev; /* device */
56: int t_flags; /* some of both */
57: int t_state; /* some of both */
58: short t_pgrp; /* tty */
59: char t_delct; /* tty */
60: char t_line; /* glue */
61: char t_col; /* tty */
62: char t_ispeed, t_ospeed; /* device */
63: char t_rocount, t_rocol; /* tty */
64: struct ttychars t_chars; /* tty */
65: /* be careful of tchars & co. */
66: #define t_erase t_chars.tc_erase
67: #define t_kill t_chars.tc_kill
68: #define t_intrc t_chars.tc_intrc
69: #define t_quitc t_chars.tc_quitc
70: #define t_startc t_chars.tc_startc
71: #define t_stopc t_chars.tc_stopc
72: #define t_eofc t_chars.tc_eofc
73: #define t_brkc t_chars.tc_brkc
74: #define t_suspc t_chars.tc_suspc
75: #define t_dsuspc t_chars.tc_dsuspc
76: #define t_rprntc t_chars.tc_rprntc
77: #define t_flushc t_chars.tc_flushc
78: #define t_werasc t_chars.tc_werasc
79: #define t_lnextc t_chars.tc_lnextc
80: };
81:
82: #define TTIPRI 28
83: #define TTOPRI 29
84:
85: /* limits */
86: #define NSPEEDS 16
87: #define TTMASK 15
88: #define OBUFSIZ 100
89: #define TTYHOG 255
90: #ifdef KERNEL
91: short tthiwat[NSPEEDS], ttlowat[NSPEEDS];
92: #define TTHIWAT(tp) tthiwat[(tp)->t_ospeed&TTMASK]
93: #define TTLOWAT(tp) ttlowat[(tp)->t_ospeed&TTMASK]
94: extern struct ttychars ttydefaults;
95: #endif
96:
97: /* internal state bits */
98: #define TS_TIMEOUT 0x000001 /* delay timeout in progress */
99: #define TS_WOPEN 0x000002 /* waiting for open to complete */
100: #define TS_ISOPEN 0x000004 /* device is open */
101: #define TS_FLUSH 0x000008 /* outq has been flushed during DMA */
102: #define TS_CARR_ON 0x000010 /* software copy of carrier-present */
103: #define TS_BUSY 0x000020 /* output in progress */
104: #define TS_ASLEEP 0x000040 /* wakeup when output done */
105: #define TS_XCLUDE 0x000080 /* exclusive-use flag against open */
106: #define TS_TTSTOP 0x000100 /* output stopped by ctl-s */
107: #define TS_HUPCLS 0x000200 /* hang up upon last close */
108: #define TS_TBLOCK 0x000400 /* tandem queue blocked */
109: #define TS_RCOLL 0x000800 /* collision in read select */
110: #define TS_WCOLL 0x001000 /* collision in write select */
111: #define TS_NBIO 0x002000 /* tty in non-blocking mode */
112: #define TS_ASYNC 0x004000 /* tty in async i/o mode */
113: /* state for intra-line fancy editing work */
114: #define TS_BKSL 0x010000 /* state for lowercase \ work */
115: #define TS_QUOT 0x020000 /* last character input was \ */
116: #define TS_ERASE 0x040000 /* within a \.../ for PRTRUB */
117: #define TS_LNCH 0x080000 /* next character is literal */
118: #define TS_TYPEN 0x100000 /* retyping suspended input (PENDIN) */
119: #define TS_CNTTB 0x200000 /* counting tab width; leave FLUSHO alone */
120:
121: #define TS_LOCAL (TS_BKSL|TS_QUOT|TS_ERASE|TS_LNCH|TS_TYPEN|TS_CNTTB)
122:
123: /* define partab character types */
124: #define ORDINARY 0
125: #define CONTROL 1
126: #define BACKSPACE 2
127: #define NEWLINE 3
128: #define TAB 4
129: #define VTAB 5
130: #define RETURN 6
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