src/mesa/drivers/ggi/display/fbdev_visual.c

   1 /******************************************************************************
   2
   3    display-fbdev-mesa: visual handling
   4
   5    Copyright (C) 1999 Jon Taylor [taylorj@ggi-project.org]
   6
   7    Permission is hereby granted, free of charge, to any person obtaining a
   8    copy of this software and associated documentation files (the "Software"),
   9    to deal in the Software without restriction, including without limitation
  10    the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11    and/or sell copies of the Software, and to permit persons to whom the
  12    Software is furnished to do so, subject to the following conditions:
  13
  14    The above copyright notice and this permission notice shall be included in
  15    all copies or substantial portions of the Software.
  16
  17    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20    THE AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  21    IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23
  24 ******************************************************************************
  25 */
  26
  27 #include <ggi/internal/ggi-dl.h>
  28 #include <ggi/mesa/ggimesa_int.h>
  29 #include <ggi/mesa/display_fbdev.h>
  30 #include <ggi/mesa/debug.h>
  31
  32 #include <stdio.h>
  33 #include <stdlib.h>
  34 #include <string.h>
  35 #include <ctype.h>
  36 #include <errno.h>
  37 #include <unistd.h>
  38 #include <fcntl.h>
  39 #include <sys/stat.h>
  40
  41
  42 #ifdef HAVE_SYS_VT_H
  43 #include <sys/vt.h>
  44 #else
  45 #include <linux/vt.h>
  46 #endif
  47 #ifdef HAVE_LINUX_KDEV_T_H
  48 #include <linux/kdev_t.h>
  49 #endif
  50 #include <linux/tty.h>
  51
  52 #define MAX_DEV_LEN     63
  53 #define DEFAULT_FBNUM   0
  54
  55 static char accel_prefix[] = "tgt-fbdev-";
  56 #define PREFIX_LEN      (sizeof(accel_prefix))
  57
  58 typedef struct {
  59         int   async;
  60         char *str;
  61 } accel_info;
  62
  63 static accel_info accel_strings[] = {
  64         { 0, "kgicon-generic",},        /* no accel - check for KGIcon  */
  65         { 0, NULL },                    /* Atari Blitter                */
  66 };
  67
  68 #define NUM_ACCELS      (sizeof(accel_strings)/sizeof(accel_info))
  69
  70
  71
  72 static int GGIopen(ggi_visual *vis, struct ggi_dlhandle *dlh,
  73                    const char *args, void *argptr, uint32 *dlret)
  74 {
  75         int err;
  76         struct fbdev_priv_mesa *priv;
  77         ggifunc_getapi *oldgetapi;
  78
  79
  80         priv->oldpriv = LIBGGI_PRIVATE(vis);  /* Hook back */
  81
  82         GGIMESA_PRIV(vis) = priv = malloc(sizeof(struct fbdev_priv_mesa));
  83         if (priv == NULL) {
  84                 fprintf(stderr, "GGIMesa: Failed to allocate fbdev private data\n");
  85                 return GGI_ENOMEM;
  86         }
  87
  88         oldgetapi = vis->opdisplay->getapi;
  89         vis->opdisplay->getapi = GGIMesa_fbdev_getapi;
  90         changed(vis, GGI_CHG_APILIST);
  91
  92         /* If the accel sublibs didn't sucessfuly hook a driver,
  93          * back up and keep looking */
  94         if ((LIBGGI_MESAEXT(vis)->update_state == NULL) ||
  95             (LIBGGI_MESAEXT(vis)->setup_driver == NULL))
  96         {
  97                 vis->opdisplay->getapi = oldgetapi;
  98         }
  99
 100         *dlret = GGI_DL_EXTENSION;
 101         return 0;
 102 }
 103
 104
 105 static int GGIclose(ggi_visual *vis, struct ggi_dlhandle *dlh)
 106 {
 107         struct fbdev_priv_mesa *priv = GGIMESA_PRIV(vis);
 108
 109         if (priv) {
 110                 LIBGGI_PRIVATE(vis) = priv->oldpriv;
 111                 free(priv);
 112         }
 113
 114         return 0;
 115 }
 116
 117
 118 int MesaGGIdl_fbdev_mesa(int func, void **funcptr)
 119 {
 120         switch (func) {
 121         case GGIFUNC_open:
 122                 *funcptr = GGIopen;
 123                 return 0;
 124         case GGIFUNC_exit:
 125                 *funcptr = NULL;
 126                 return 0;
 127         case GGIFUNC_close:
 128                 *funcptr = GGIclose;
 129                 return 0;
 130         default:
 131                 *funcptr = NULL;
 132         }
 133
 134         return GGI_ENOTFOUND;
 135 }
 136
 137
 138 #include <ggi/internal/ggidlinit.h>