sys/dev/wsfont/wsfontdev.c

   1 /* $NetBSD: wsfontdev.c,v 1.13 2006/11/16 01:33:31 christos Exp $ */
   2
   3 /*
   4  * Copyright (c) 2001
   5  *      Matthias Drochner.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions, and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 __KERNEL_RCSID(0, "$NetBSD: wsfontdev.c,v 1.13 2006/11/16 01:33:31 christos Exp $");
  31
  32 #include <sys/param.h>
  33 #include <sys/systm.h>
  34 #include <sys/conf.h>
  35 #include <sys/ioctl.h>
  36 #include <sys/malloc.h>
  37 #include <sys/event.h>
  38
  39 #include <dev/wsfont/wsfont.h>
  40 #include <dev/wscons/wsconsio.h> /* XXX */
  41
  42 void wsfontattach(int);
  43
  44 static int wsfont_isopen;
  45
  46 void
  47 wsfontattach(int n)
  48 {
  49
  50         wsfont_init();
  51 }
  52
  53 static int
  54 wsfontopen(dev_t dev, int flag, int mode,
  55     struct lwp *l)
  56 {
  57
  58         if (wsfont_isopen)
  59                 return (EBUSY);
  60         wsfont_isopen = 1;
  61         return (0);
  62 }
  63
  64 static int
  65 wsfontclose(dev_t dev, int flag, int mode,
  66     struct lwp *l)
  67 {
  68
  69         wsfont_isopen = 0;
  70         return (0);
  71 }
  72
  73 static int
  74 wsfontioctl(dev_t dev, u_long cmd, void *data, int flag,
  75     struct lwp *l)
  76 {
  77         char nbuf[16];
  78         void *buf;
  79         int res;
  80
  81         switch (cmd) {
  82         case WSDISPLAYIO_LDFONT:
  83 #define d ((struct wsdisplay_font *)data)
  84                 if (d->name) {
  85                         res = copyinstr(d->name, nbuf, sizeof(nbuf), 0);
  86                         if (res)
  87                                 return (res);
  88                         d->name = nbuf;
  89                 } else
  90                         d->name = "loaded"; /* ??? */
  91                 buf = malloc(d->fontheight * d->stride * d->numchars,
  92                              M_DEVBUF, M_WAITOK);
  93                 res = copyin(d->data, buf,
  94                              d->fontheight * d->stride * d->numchars);
  95                 if (res) {
  96                         free(buf, M_DEVBUF);
  97                         return (res);
  98                 }
  99                 d->data = buf;
 100                 res = wsfont_add(d, 1);
 101                 free(buf, M_DEVBUF);
 102 #undef d
 103                 return (res);
 104         default:
 105                 return (EINVAL);
 106         }
 107 }
 108
 109 const struct cdevsw wsfont_cdevsw = {
 110         wsfontopen, wsfontclose, noread, nowrite, wsfontioctl,
 111             nostop, notty, nopoll, nommap, nokqfilter, D_OTHER,
 112 };