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Annotation of coherent/d/PS2_KERNEL/coh.286/ct.c, revision 1.1.1.1

1.1       root        1: /* $Header: /kernel/kersrc/coh.286/RCS/ct.c,v 1.1 92/07/17 15:18:00 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                     12:  *     An unpublished work by Mark Williams Company, Chicago.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 1.1  92/07/17  15:18:00  bin
                     21:  * Initial revision
                     22:  * 
                     23:  * Revision 1.1        88/03/24  16:18:09      src
                     24:  * Initial revision
                     25:  * 
                     26:  * 86/11/19    Allan Cornish           /usr/src/sys/drv/ct.c
                     27:  * Added support for System V.3 compatible polls.
                     28:  */
                     29: #include <sys/coherent.h>
                     30: #include <sys/con.h>
                     31: #include <errno.h>
                     32: #include <sys/proc.h>
                     33: #include <sys/stat.h>
                     34: 
                     35: /*
                     36:  * Functions for configuration.
                     37:  */
                     38: int    ctopen();
                     39: int    ctclose();
                     40: int    ctread();
                     41: int    ctwrite();
                     42: int    ctioctl();
                     43: int    ctpoll();
                     44: int    nulldev();
                     45: int    nonedev();
                     46: 
                     47: /*
                     48:  * Configuration table.
                     49:  */
                     50: CON ctcon ={
                     51:        DFCHR|DFPOL,                    /* Flags */
                     52:        1,                              /* Major index */
                     53:        ctopen,                         /* Open */
                     54:        ctclose,                        /* Close */
                     55:        nulldev,                        /* Block */
                     56:        ctread,                         /* Read */
                     57:        ctwrite,                        /* Write */
                     58:        ctioctl,                        /* Ioctl */
                     59:        nulldev,                        /* Powerfail */
                     60:        nulldev,                        /* Timeout */
                     61:        nulldev,                        /* Load */
                     62:        nulldev,                        /* Unload */
                     63:        ctpoll                          /* Poll */
                     64: };
                     65: 
                     66: /*
                     67:  * Open.
                     68:  */
                     69: ctopen(dev, m)
                     70: dev_t dev;
                     71: {
                     72:        register dev_t ttdev;
                     73: 
                     74:        if ((ttdev=SELF->p_ttdev) == NODEV) {
                     75:                u.u_error = ENXIO;
                     76:                return;
                     77:        }
                     78:        dopen(ttdev, m, DFCHR);
                     79: }
                     80: 
                     81: /*
                     82:  * Close.
                     83:  */
                     84: ctclose(dev)
                     85: dev_t dev;
                     86: {
                     87:        dclose(SELF->p_ttdev);
                     88: }
                     89: 
                     90: /*
                     91:  * Read.
                     92:  */
                     93: ctread(dev, iop)
                     94: dev_t dev;
                     95: IO *iop;
                     96: {
                     97:        dread(SELF->p_ttdev, iop);
                     98: }
                     99: 
                    100: /*
                    101:  * Write.
                    102:  */
                    103: ctwrite(dev, iop)
                    104: dev_t dev;
                    105: IO *iop;
                    106: {
                    107:        dwrite(SELF->p_ttdev, iop);
                    108: }
                    109: 
                    110: /*
                    111:  * Ioctl.
                    112:  */
                    113: ctioctl(dev, com, vec)
                    114: dev_t dev;
                    115: struct sgttyb *vec;
                    116: {
                    117:        dioctl(SELF->p_ttdev, com, vec);
                    118: }
                    119: 
                    120: /*
                    121:  * Poll.
                    122:  */
                    123: ctpoll(dev, ev)
                    124: dev_t dev;
                    125: int ev;
                    126: {
                    127:        return dpoll(SELF->p_ttdev, ev);
                    128: }

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