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1.1 root 1: /* $Header: /src386/STREAMS/io.386/RCS/ct.c,v 2.3 93/08/09 13:44:24 bin Exp Locker: bin $ */
2: /* (lgl-
3: * The information contained herein is a trade secret of Mark Williams
4: * Company, and is confidential information. It is provided under a
5: * license agreement, and may be copied or disclosed only under the
6: * terms of that agreement. Any reproduction or disclosure of this
7: * material without the express written authorization of Mark Williams
8: * Company or persuant to the license agreement is unlawful.
9: *
10: * COHERENT Version 2.3.37
11: * Copyright (c) 1982, 1983, 1984.
12: * An unpublished work by Mark Williams Company, Chicago.
13: * All rights reserved.
14: -lgl) */
15: /*
16: * Coherent
17: * Console terminal driver.
18: *
19: * $Log: ct.c,v $
20: * Revision 2.3 93/08/09 13:44:24 bin
21: * Kernel 82 changes
22: *
23: * Revision 2.2 93/07/26 15:28:02 nigel
24: * Nigel's R80
25: *
26: * Revision 1.2 92/01/06 12:26:48 hal
27: * Compile with cc.mwc.
28: *
29: * Revision 1.1 88/03/24 16:18:09 src
30: * Initial revision
31: *
32: * 86/11/19 Allan Cornish /usr/src/sys/drv/ct.c
33: * Added support for System V.3 compatible polls.
34: */
35: #include <sys/coherent.h>
36: #include <sys/con.h>
37: #include <sys/errno.h>
38: #include <sys/proc.h>
39: #include <sys/stat.h>
40:
41: /*
42: * Functions for configuration.
43: */
44: int ctopen();
45: int ctclose();
46: int ctread();
47: int ctwrite();
48: int ctioctl();
49: int ctpoll();
50: int nulldev();
51: int nonedev();
52:
53: /*
54: * Configuration table.
55: */
56: CON ctcon ={
57: DFCHR|DFPOL, /* Flags */
58: 1, /* Major index */
59: ctopen, /* Open */
60: ctclose, /* Close */
61: nulldev, /* Block */
62: ctread, /* Read */
63: ctwrite, /* Write */
64: ctioctl, /* Ioctl */
65: nulldev, /* Powerfail */
66: nulldev, /* Timeout */
67: nulldev, /* Load */
68: nulldev, /* Unload */
69: ctpoll /* Poll */
70: };
71:
72: /*
73: * Open.
74: */
75: ctopen(dev, m)
76: dev_t dev;
77: {
78: register dev_t ttdev;
79:
80: if ((ttdev=SELF->p_ttdev) == NODEV) {
81: u.u_error = ENXIO;
82: return;
83: }
84: dopen(ttdev, m, DFCHR);
85: }
86:
87: /*
88: * Close.
89: */
90: ctclose(dev)
91: dev_t dev;
92: {
93: dclose(SELF->p_ttdev);
94: }
95:
96: /*
97: * Read.
98: */
99: ctread(dev, iop)
100: dev_t dev;
101: IO *iop;
102: {
103: dread(SELF->p_ttdev, iop);
104: }
105:
106: /*
107: * Write.
108: */
109: ctwrite(dev, iop)
110: dev_t dev;
111: IO *iop;
112: {
113: dwrite(SELF->p_ttdev, iop);
114: }
115:
116: /*
117: * Ioctl.
118: */
119:
120: ctioctl(dev, com, vec, mode)
121: dev_t dev;
122: struct sgttyb *vec;
123: {
124: dioctl (SELF->p_ttdev, com, vec, mode, NULL);
125: }
126:
127:
128: /*
129: * Poll.
130: */
131:
132: ctpoll(dev, ev)
133: dev_t dev;
134: int ev;
135: {
136: return dpoll(SELF->p_ttdev, ev);
137: }
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