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Annotation of coherent/d/kernel/USRSRC/ttydrv/ct.c, revision 1.1.1.1

1.1       root        1: /* $Header: /usr/src/sys/drv/RCS/ct.c,v 1.1 88/03/24 16:18:09 src Exp $ */
                      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                     12:  *     An unpublished work by Mark Williams Company, Chicago.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:       /usr/src/sys/drv/RCS/ct.c,v $
                     20:  * Revision 1.1        88/03/24  16:18:09      src
                     21:  * Initial revision
                     22:  * 
                     23:  * 86/11/19    Allan Cornish           /usr/src/sys/drv/ct.c
                     24:  * Added support for System V.3 compatible polls.
                     25:  */
                     26: #include <sys/coherent.h>
                     27: #include <sys/con.h>
                     28: #include <errno.h>
                     29: #include <sys/proc.h>
                     30: #include <sys/stat.h>
                     31: #include <sys/uproc.h>
                     32: 
                     33: /*
                     34:  * Functions for configuration.
                     35:  */
                     36: int    ctopen();
                     37: int    ctclose();
                     38: int    ctread();
                     39: int    ctwrite();
                     40: int    ctioctl();
                     41: int    ctpoll();
                     42: int    nulldev();
                     43: int    nonedev();
                     44: 
                     45: /*
                     46:  * Configuration table.
                     47:  */
                     48: CON ctcon ={
                     49:        DFCHR|DFPOL,                    /* Flags */
                     50:        1,                              /* Major index */
                     51:        ctopen,                         /* Open */
                     52:        ctclose,                        /* Close */
                     53:        nulldev,                        /* Block */
                     54:        ctread,                         /* Read */
                     55:        ctwrite,                        /* Write */
                     56:        ctioctl,                        /* Ioctl */
                     57:        nulldev,                        /* Powerfail */
                     58:        nulldev,                        /* Timeout */
                     59:        nulldev,                        /* Load */
                     60:        nulldev,                        /* Unload */
                     61:        ctpoll                          /* Poll */
                     62: };
                     63: 
                     64: /*
                     65:  * Open.
                     66:  */
                     67: ctopen(dev, m)
                     68: dev_t dev;
                     69: {
                     70:        register dev_t ttdev;
                     71: 
                     72:        if ((ttdev=SELF->p_ttdev) == NODEV) {
                     73:                u.u_error = ENXIO;
                     74:                return;
                     75:        }
                     76:        dopen(ttdev, m, DFCHR);
                     77: }
                     78: 
                     79: /*
                     80:  * Close.
                     81:  */
                     82: ctclose(dev)
                     83: dev_t dev;
                     84: {
                     85:        dclose(SELF->p_ttdev);
                     86: }
                     87: 
                     88: /*
                     89:  * Read.
                     90:  */
                     91: ctread(dev, iop)
                     92: dev_t dev;
                     93: IO *iop;
                     94: {
                     95:        dread(SELF->p_ttdev, iop);
                     96: }
                     97: 
                     98: /*
                     99:  * Write.
                    100:  */
                    101: ctwrite(dev, iop)
                    102: dev_t dev;
                    103: IO *iop;
                    104: {
                    105:        dwrite(SELF->p_ttdev, iop);
                    106: }
                    107: 
                    108: /*
                    109:  * Ioctl.
                    110:  */
                    111: ctioctl(dev, com, vec)
                    112: dev_t dev;
                    113: struct sgttyb *vec;
                    114: {
                    115:        dioctl(SELF->p_ttdev, com, vec);
                    116: }
                    117: 
                    118: /*
                    119:  * Poll.
                    120:  */
                    121: ctpoll(dev, ev)
                    122: dev_t dev;
                    123: int ev;
                    124: {
                    125:        return dpoll(SELF->p_ttdev, ev);
                    126: }

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