sys/dev/misc/syscons/scterm-dumb.c

   1 /*-
   2  * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer as
  10  *    the first lines of this file unmodified.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  *
  26  * $FreeBSD: src/sys/dev/syscons/scterm-dumb.c,v 1.2 2000/01/29 15:08:45 peter Exp $
  27  * $DragonFly: src/sys/dev/misc/syscons/scterm-dumb.c,v 1.5 2006/07/28 04:17:36 dillon Exp $
  28  */
  29
  30 #include "opt_syscons.h"
  31
  32 #include <sys/param.h>
  33 #include <sys/systm.h>
  34 #include <sys/kernel.h>
  35 #include <sys/consio.h>
  36
  37 #include <machine/pc/display.h>
  38
  39 #include "syscons.h"
  40 #include "sctermvar.h"
  41
  42 #ifdef SC_DUMB_TERMINAL
  43
  44 /* dumb terminal emulator */
  45
  46 static sc_term_init_t   dumb_init;
  47 static sc_term_term_t   dumb_term;
  48 static sc_term_puts_t   dumb_puts;
  49 static sc_term_ioctl_t  dumb_ioctl;
  50 static sc_term_clear_t  dumb_clear;
  51 static sc_term_input_t  dumb_input;
  52 static void             dumb_nop(void);
  53
  54 static sc_term_sw_t sc_term_dumb = {
  55         { NULL, NULL },
  56         "dumb",                         /* emulator name */
  57         "dumb terminal",                /* description */
  58         "*",                            /* matching renderer */
  59         0,                              /* softc size */
  60         0,
  61         dumb_init,
  62         dumb_term,
  63         dumb_puts,
  64         dumb_ioctl,
  65         (sc_term_reset_t *)dumb_nop,
  66         (sc_term_default_attr_t *)dumb_nop,
  67         dumb_clear,
  68         (sc_term_notify_t *)dumb_nop,
  69         dumb_input,
  70 };
  71
  72 SCTERM_MODULE(dumb, sc_term_dumb);
  73
  74 static int
  75 dumb_init(scr_stat *scp, void **softc, int code)
  76 {
  77         switch (code) {
  78         case SC_TE_COLD_INIT:
  79                 ++sc_term_dumb.te_refcount;
  80                 break;
  81         case SC_TE_WARM_INIT:
  82                 break;
  83         }
  84         return 0;
  85 }
  86
  87 static int
  88 dumb_term(scr_stat *scp, void **softc)
  89 {
  90         --sc_term_dumb.te_refcount;
  91         return 0;
  92 }
  93
  94 static void
  95 dumb_puts(scr_stat *scp, u_char *buf, int len)
  96 {
  97         while (len > 0) {
  98                 ++scp->sc->write_in_progress;
  99                 sc_term_gen_print(scp, &buf, &len, SC_NORM_ATTR << 8);
 100                 sc_term_gen_scroll(scp, scp->sc->scr_map[0x20],
 101                                    SC_NORM_ATTR << 8);
 102                 --scp->sc->write_in_progress;
 103         }
 104 }
 105
 106 static int
 107 dumb_ioctl(scr_stat *scp, struct tty *tp, u_long cmd, caddr_t data,
 108            int flag)
 109 {
 110         vid_info_t *vi;
 111
 112         switch (cmd) {
 113         case GIO_ATTR:          /* get current attributes */
 114                 *(int*)data = SC_NORM_ATTR;
 115                 return 0;
 116         case CONS_GETINFO:      /* get current (virtual) console info */
 117                 vi = (vid_info_t *)data;
 118                 if (vi->size != sizeof(struct vid_info))
 119                         return EINVAL;
 120                 vi->mv_norm.fore = SC_NORM_ATTR & 0x0f;
 121                 vi->mv_norm.back = (SC_NORM_ATTR >> 4) & 0x0f;
 122                 vi->mv_rev.fore = SC_NORM_ATTR & 0x0f;
 123                 vi->mv_rev.back = (SC_NORM_ATTR >> 4) & 0x0f;
 124                 /*
 125                  * The other fields are filled by the upper routine. XXX
 126                  */
 127                 return ENOIOCTL;
 128         }
 129         return ENOIOCTL;
 130 }
 131
 132 static void
 133 dumb_clear(scr_stat *scp)
 134 {
 135         sc_move_cursor(scp, 0, 0);
 136         sc_vtb_clear(&scp->vtb, scp->sc->scr_map[0x20], SC_NORM_ATTR << 8);
 137         mark_all(scp);
 138 }
 139
 140 static int
 141 dumb_input(scr_stat *scp, int c, struct tty *tp)
 142 {
 143         return FALSE;
 144 }
 145
 146 static void
 147 dumb_nop(void)
 148 {
 149         /* nothing */
 150 }
 151
 152 #endif /* SC_DUMB_TERMINAL */