sys/dev/rcons/rcons_kern.c

   1 /*      $NetBSD: rcons_kern.c,v 1.21 2007/11/19 18:51:50 ad Exp $ */
   2
   3 /*
   4  * Copyright (c) 1991, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This software was developed by the Computer Systems Engineering group
   8  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
   9  * contributed to Berkeley.
  10  *
  11  * All advertising materials mentioning features or use of this software
  12  * must display the following acknowledgement:
  13  *      This product includes software developed by the University of
  14  *      California, Lawrence Berkeley Laboratory.
  15  *
  16  * Redistribution and use in source and binary forms, with or without
  17  * modification, are permitted provided that the following conditions
  18  * are met:
  19  * 1. Redistributions of source code must retain the above copyright
  20  *    notice, this list of conditions and the following disclaimer.
  21  * 2. Redistributions in binary form must reproduce the above copyright
  22  *    notice, this list of conditions and the following disclaimer in the
  23  *    documentation and/or other materials provided with the distribution.
  24  * 3. Neither the name of the University nor the names of its contributors
  25  *    may be used to endorse or promote products derived from this software
  26  *    without specific prior written permission.
  27  *
  28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  38  * SUCH DAMAGE.
  39  *
  40  *      @(#)rcons_kern.c        8.1 (Berkeley) 6/11/93
  41  */
  42
  43 #include <sys/cdefs.h>
  44 __KERNEL_RCSID(0, "$NetBSD: rcons_kern.c,v 1.21 2007/11/19 18:51:50 ad Exp $");
  45
  46 #include <sys/param.h>
  47 #include <sys/device.h>
  48 #include <sys/kernel.h>
  49 #include <sys/systm.h>
  50 #include <sys/ioctl.h>
  51 #include <sys/tty.h>
  52 #include <sys/proc.h>
  53
  54 #include <dev/rcons/raster.h>
  55 #include <dev/rcons/rcons.h>
  56
  57 static void rcons_belltmr(void *);
  58
  59 static struct rconsole *mydevicep; /* XXX */
  60 static void rcons_output(struct tty *);
  61
  62 void
  63 rcons_cnputc(int c)
  64 {
  65         char buf[1];
  66         long attr;
  67
  68         /* Swap in kernel attribute */
  69         attr = mydevicep->rc_attr;
  70         mydevicep->rc_attr = mydevicep->rc_kern_attr;
  71
  72         if (c == '\n')
  73                 rcons_puts(mydevicep, "\r\n", 2);
  74         else {
  75                 buf[0] = c;
  76                 rcons_puts(mydevicep, buf, 1);
  77         }
  78
  79         /* Swap out kernel attribute */
  80         mydevicep->rc_attr = attr;
  81 }
  82
  83 static void
  84 rcons_output(struct tty *tp)
  85 {
  86         int s, n;
  87         char buf[OBUFSIZ];
  88
  89         s = spltty();
  90         if (tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP)) {
  91                 splx(s);
  92                 return;
  93         }
  94         tp->t_state |= TS_BUSY;
  95         splx(s);
  96         n = q_to_b(&tp->t_outq, buf, sizeof(buf));
  97         rcons_puts(mydevicep, buf, n);
  98
  99         s = spltty();
 100         tp->t_state &= ~TS_BUSY;
 101         /* Come back if there's more to do */
 102         if (ttypull(tp)) {
 103                 tp->t_state |= TS_TIMEOUT;
 104                 callout_schedule(&tp->t_rstrt_ch, 1);
 105         }
 106         splx(s);
 107 }
 108
 109 /* Ring the console bell */
 110 void
 111 rcons_bell(struct rconsole *rc)
 112 {
 113         int i, s;
 114
 115         if (rc->rc_bits & FB_VISBELL) {
 116                 /* invert the screen twice */
 117                 i = ((rc->rc_bits & FB_INVERT) == 0);
 118                 rcons_invert(rc, i);
 119                 rcons_invert(rc, i ^ 1);
 120         }
 121
 122         s = splhigh();
 123         if (rc->rc_belldepth++) {
 124                 if (rc->rc_belldepth > 3)
 125                         rc->rc_belldepth = 3;
 126                 splx(s);
 127         } else {
 128                 rc->rc_ringing = 1;
 129                 splx(s);
 130                 (*rc->rc_bell)(1);
 131                 /* XXX Chris doesn't like the following divide */
 132                 callout_reset(&rc->rc_belltmr_ch, hz / 10,
 133                     rcons_belltmr, rc);
 134         }
 135 }
 136
 137 /* Bell timer service routine */
 138 static void
 139 rcons_belltmr(void *p)
 140 {
 141         struct rconsole *rc = p;
 142         int s = splhigh(), i;
 143
 144         if (rc->rc_ringing) {
 145                 rc->rc_ringing = 0;
 146                 i = --rc->rc_belldepth;
 147                 splx(s);
 148                 (*rc->rc_bell)(0);
 149                 if (i != 0)
 150                         /* XXX Chris doesn't like the following divide */
 151                         callout_reset(&rc->rc_belltmr_ch, hz / 30,
 152                             rcons_belltmr, rc);
 153         } else {
 154                 rc->rc_ringing = 1;
 155                 splx(s);
 156                 (*rc->rc_bell)(1);
 157                 callout_reset(&rc->rc_belltmr_ch, hz / 10,
 158                     rcons_belltmr, rc);
 159         }
 160 }
 161
 162 void
 163 rcons_init(struct rconsole *rc, int clear)
 164 {
 165         mydevicep = rc;
 166
 167         callout_init(&rc->rc_belltmr_ch, 0);
 168
 169         /* Initialize operations set, clear screen and turn cursor on */
 170         rcons_init_ops(rc);
 171         if (clear) {
 172                 rc->rc_col = 0;
 173                 rc->rc_row = 0;
 174                 rcons_clear2eop(rc);
 175         }
 176         rcons_cursor(rc);
 177 }
 178
 179 void
 180 rcons_ttyinit(struct tty *tp)
 181 {
 182         /* XXX this should go away */
 183         struct rconsole *rc = mydevicep;
 184         struct winsize *ws;
 185
 186         if (rc == NULL)
 187                 return;
 188
 189         /* Let the system know how big the console is */
 190         ws = &tp->t_winsize;
 191         ws->ws_row = rc->rc_maxrow;
 192         ws->ws_col = rc->rc_maxcol;
 193         ws->ws_xpixel = rc->rc_width;
 194         ws->ws_ypixel = rc->rc_height;
 195
 196         /* Initialization done; hook us up */
 197         tp->t_oproc = rcons_output;
 198         /*tp->t_stop = (void (*)()) nullop;*/
 199 }