src/mesa/drivers/ggi/default/genkgi_visual.c

   1 /* $Id: genkgi_visual.c,v 1.7 2000/06/11 20:11:55 jtaylor Exp $
   2 ******************************************************************************
   3
   4    genkgi_visual.c: visual handling for the generic KGI helper
   5
   6    Copyright (C) 1999 Jon Taylor [taylorj@ggi-project.org]
   7
   8    Permission is hereby granted, free of charge, to any person obtaining a
   9    copy of this software and associated documentation files (the "Software"),
  10    to deal in the Software without restriction, including without limitation
  11    the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12    and/or sell copies of the Software, and to permit persons to whom the
  13    Software is furnished to do so, subject to the following conditions:
  14
  15    The above copyright notice and this permission notice shall be included in
  16    all copies or substantial portions of the Software.
  17
  18    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21    THE AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  22    IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  23    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24
  25 ******************************************************************************
  26 */
  27
  28 #include <ggi/internal/ggi-dl.h>
  29 #include <ggi/mesa/ggimesa_int.h>
  30 #include <ggi/mesa/display_fbdev.h>
  31 #include <ggi/mesa/debug.h>
  32 #include "genkgi.h"
  33
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37 #include <ctype.h>
  38 #include <errno.h>
  39 #include <unistd.h>
  40 #include <fcntl.h>
  41 #include <sys/stat.h>
  42
  43 #ifdef HAVE_SYS_VT_H
  44 #include <sys/vt.h>
  45 #else
  46 #include <linux/vt.h>
  47 #endif
  48 #ifdef HAVE_LINUX_KDEV_T_H
  49 #include <linux/kdev_t.h>
  50 #endif
  51 #include <linux/tty.h>
  52
  53 #define DEFAULT_FBNUM   0
  54
  55 static char accel_prefix[] = "tgt-fbdev-kgicon-";
  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 {
  65         { 0, "d3dim" },         /* Direct3D Immediate Mode              */
  66 };
  67
  68 #define NUM_ACCELS      (sizeof(accel_strings)/sizeof(accel_info))
  69
  70 /* FIXME: These should be defined in the makefile system */
  71 #define CONF_FILE "/usr/local/etc/ggi/mesa/targets/genkgi.conf"
  72 void *_configHandle;
  73 char confstub[512] = CONF_FILE;
  74 char *conffile = confstub;
  75
  76 static int changed(ggi_visual_t vis, int whatchanged)
  77 {
  78         GGIMESADPRINT_CORE("Entered ggimesa_genkgi_changed\n");
  79
  80         switch (whatchanged)
  81         {
  82                 case GGI_CHG_APILIST:
  83                 {
  84                         char api[256];
  85                         char args[256];
  86                         int i;
  87                         const char *fname;
  88                         ggi_dlhandle *lib;
  89
  90                         for (i = 0; ggiGetAPI(vis, i, api, args) == 0; i++)
  91                         {
  92                                 strcat(api, "-mesa");
  93                                 GGIMESADPRINT_CORE("ggimesa_genkgi_changed: api=%s, i=%d\n", api, i);
  94                                 fname = ggMatchConfig(_configHandle, api, NULL);
  95                                 if (fname == NULL)
  96                                 {
  97                                         /* No special implementation for this sublib */
  98                                         continue;
  99                                 }
 100
 101                                 lib = ggiExtensionLoadDL(vis, fname, args, NULL);
 102                         }
 103                 }
 104                 break;
 105         }
 106         return 0;
 107 }
 108
 109 static int GGIdlinit(ggi_visual *vis, struct ggi_dlhandle *dlh,
 110                         const char *args, void *argptr, uint32 *dlret)
 111 {
 112         struct genkgi_priv_mesa *priv;
 113         char libname[256], libargs[256];
 114         int id, err;
 115         struct stat junk;
 116         ggifunc_getapi *oldgetapi;
 117
 118         GGIMESADPRINT_CORE("display-fbdev-kgicon-mesa: GGIdlinit start\n");
 119
 120         GENKGI_PRIV_MESA(vis) = priv = malloc(sizeof(struct genkgi_priv_mesa));
 121         if (priv == NULL)
 122         {
 123                 fprintf(stderr, "Failed to allocate genkgi private data\n");
 124                 return GGI_DL_ERROR;
 125         }
 126
 127         priv->oldpriv = GENKGI_PRIV(vis);
 128 #if 0
 129         err = ggLoadConfig(conffile, &_configHandle);
 130         if (err != GGI_OK)
 131         {
 132                 gl_ggiPrint("display-fbdev-kgicon-mesa: Couldn't open %s\n", conffile);
 133                 return err;
 134         }
 135
 136         /* Hack city here.  We need to probe the KGI driver properly for
 137          * suggest-strings to discover the acceleration type(s).
 138          */
 139         priv->have_accel = 0;
 140
 141         if (stat("/proc/gfx0", &junk) == 0)
 142         {
 143                 sprintf(priv->accel, "%s%s", accel_prefix, "d3dim");
 144                 priv->have_accel = 1;
 145                 GGIMESADPRINT_CORE("display-fbdev-kgicon-mesa: Using accel: \"%s\"\n", priv->accel);
 146         }
 147
 148         /* Mode management */
 149         vis->opdisplay->getapi = GGIMesa_genkgi_getapi;
 150         ggiIndicateChange(vis, GGI_CHG_APILIST);
 151
 152         /* Give the accel sublibs a chance to set up a driver */
 153         if (priv->have_accel == 1)
 154         {
 155                 oldgetapi = vis->opdisplay->getapi;
 156                 vis->opdisplay->getapi = GGIMesa_genkgi_getapi;
 157                 changed(vis, GGI_CHG_APILIST);
 158                 /* If the accel sublibs didn't produce, back up
 159                  * and keep looking */
 160                 if ((LIBGGI_MESAEXT(vis)->update_state == NULL) ||
 161                     (LIBGGI_MESAEXT(vis)->setup_driver == NULL))
 162                   vis->opdisplay->getapi = oldgetapi;
 163         }
 164
 165         LIBGGI_MESAEXT(vis)->update_state = genkgi_update_state;
 166         LIBGGI_MESAEXT(vis)->setup_driver = genkgi_setup_driver;
 167 #endif
 168         GGIMESADPRINT_CORE("display-fbdev-kgicon-mesa: GGIdlinit finished\n");
 169
 170         *dlret = GGI_DL_OPDRAW;
 171         return 0;
 172 }
 173
 174 int MesaGGIdl_fbdev(int func, void **funcptr)
 175 {
 176         switch (func) {
 177                 case GGIFUNC_open:
 178                         *funcptr = GGIopen;
 179                         return 0;
 180                 case GGIFUNC_exit:
 181                 case GGIFUNC_close:
 182                         *funcptr = NULL;
 183                         return 0;
 184                 default:
 185                         *funcptr = NULL;
 186         }
 187         return GGI_ENOTFOUND;
 188 }
 189
 190 #include <ggi/internal/ggidlinit.h>