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Annotation of coherent/b/kernel/io.386/ct.c, revision 1.1.1.1

1.1       root        1: /* $Header: /src386/kernel/io.386/RCS/ct.c,v 1.6 93/04/16 06:58:37 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                     12:  *     An unpublished work by Mark Williams Company, Chicago.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 1.6  93/04/16  06:58:37  bin
                     21:  * Hal: kernel 76 update
                     22:  * 
                     23:  * Revision 1.2  92/01/06  12:26:48  hal
                     24:  * Compile with cc.mwc.
                     25:  * 
                     26:  * Revision 1.1        88/03/24  16:18:09      src
                     27:  * Initial revision
                     28:  * 
                     29:  * 86/11/19    Allan Cornish           /usr/src/sys/drv/ct.c
                     30:  * Added support for System V.3 compatible polls.
                     31:  */
                     32: #include <sys/coherent.h>
                     33: #include <sys/con.h>
                     34: #include <errno.h>
                     35: #include <sys/proc.h>
                     36: #include <sys/stat.h>
                     37: 
                     38: /*
                     39:  * Functions for configuration.
                     40:  */
                     41: int    ctopen();
                     42: int    ctclose();
                     43: int    ctread();
                     44: int    ctwrite();
                     45: int    ctioctl();
                     46: int    ctpoll();
                     47: int    nulldev();
                     48: int    nonedev();
                     49: 
                     50: /*
                     51:  * Configuration table.
                     52:  */
                     53: CON ctcon ={
                     54:        DFCHR|DFPOL,                    /* Flags */
                     55:        1,                              /* Major index */
                     56:        ctopen,                         /* Open */
                     57:        ctclose,                        /* Close */
                     58:        nulldev,                        /* Block */
                     59:        ctread,                         /* Read */
                     60:        ctwrite,                        /* Write */
                     61:        ctioctl,                        /* Ioctl */
                     62:        nulldev,                        /* Powerfail */
                     63:        nulldev,                        /* Timeout */
                     64:        nulldev,                        /* Load */
                     65:        nulldev,                        /* Unload */
                     66:        ctpoll                          /* Poll */
                     67: };
                     68: 
                     69: /*
                     70:  * Open.
                     71:  */
                     72: ctopen(dev, m)
                     73: dev_t dev;
                     74: {
                     75:        register dev_t ttdev;
                     76: 
                     77:        if ((ttdev=SELF->p_ttdev) == NODEV) {
                     78:                u.u_error = ENXIO;
                     79:                return;
                     80:        }
                     81:        dopen(ttdev, m, DFCHR);
                     82: }
                     83: 
                     84: /*
                     85:  * Close.
                     86:  */
                     87: ctclose(dev)
                     88: dev_t dev;
                     89: {
                     90:        dclose(SELF->p_ttdev);
                     91: }
                     92: 
                     93: /*
                     94:  * Read.
                     95:  */
                     96: ctread(dev, iop)
                     97: dev_t dev;
                     98: IO *iop;
                     99: {
                    100:        dread(SELF->p_ttdev, iop);
                    101: }
                    102: 
                    103: /*
                    104:  * Write.
                    105:  */
                    106: ctwrite(dev, iop)
                    107: dev_t dev;
                    108: IO *iop;
                    109: {
                    110:        dwrite(SELF->p_ttdev, iop);
                    111: }
                    112: 
                    113: /*
                    114:  * Ioctl.
                    115:  */
                    116: ctioctl(dev, com, vec)
                    117: dev_t dev;
                    118: struct sgttyb *vec;
                    119: {
                    120:        dioctl(SELF->p_ttdev, com, vec);
                    121: }
                    122: 
                    123: /*
                    124:  * Poll.
                    125:  */
                    126: ctpoll(dev, ev)
                    127: dev_t dev;
                    128: int ev;
                    129: {
                    130:        return dpoll(SELF->p_ttdev, ev);
                    131: }

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