The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/dev/fb/splash.c

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
SearchContext: -  none  -  3  -  10 

    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 AUTHOR ``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 AUTHOR 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  */
   27 
   28 #include <sys/cdefs.h>
   29 __FBSDID("$FreeBSD: releng/6.4/sys/dev/fb/splash.c 129879 2004-05-30 20:08:47Z phk $");
   30 
   31 #include "opt_splash.h"
   32 
   33 #include <sys/param.h>
   34 #include <sys/systm.h>
   35 #include <sys/malloc.h>
   36 #include <sys/linker.h>
   37 #include <sys/fbio.h>
   38 #include <sys/kernel.h>
   39 #include <sys/module.h>
   40 
   41 #include <dev/fb/fbreg.h>
   42 #include <dev/fb/splashreg.h>
   43 
   44 MODULE_VERSION(splash, 1);
   45 
   46 /* video adapter and image decoder */
   47 static video_adapter_t  *splash_adp;
   48 static splash_decoder_t *splash_decoder;
   49 
   50 /* decoder candidates */
   51 static int              decoders;
   52 static splash_decoder_t **decoder_set;
   53 #define DECODER_ARRAY_DELTA 4
   54 
   55 /* console driver callback */
   56 static int              (*splash_callback)(int, void *);
   57 static void             *splash_arg;
   58 
   59 static int
   60 splash_find_data(splash_decoder_t *decoder)
   61 {
   62         caddr_t image_module;
   63         caddr_t p;
   64 
   65         if (decoder->data_type == NULL)
   66                 return 0;
   67         image_module = preload_search_by_type(decoder->data_type);
   68         if (image_module == NULL)
   69                 return ENOENT;
   70         p = preload_search_info(image_module, MODINFO_ADDR);
   71         if (p == NULL)
   72                 return ENOENT;
   73         decoder->data = *(void **)p;
   74         p = preload_search_info(image_module, MODINFO_SIZE);
   75         if (p == NULL)
   76                 return ENOENT;
   77         decoder->data_size = *(size_t *)p;
   78         if (bootverbose)
   79                 printf("splash: image@%p, size:%lu\n",
   80                        (void *)decoder->data, (long)decoder->data_size);
   81         return 0;
   82 }
   83 
   84 static int
   85 splash_test(splash_decoder_t *decoder)
   86 {
   87         if (splash_find_data(decoder))
   88                 return ENOENT;  /* XXX */
   89         if (*decoder->init && (*decoder->init)(splash_adp)) {
   90                 decoder->data = NULL;
   91                 decoder->data_size = 0;
   92                 return ENODEV;  /* XXX */
   93         }
   94         if (bootverbose)
   95                 printf("splash: image decoder found: %s\n", decoder->name);
   96         return 0;
   97 }
   98 
   99 static void
  100 splash_new(splash_decoder_t *decoder)
  101 {
  102         splash_decoder = decoder;
  103         if (splash_callback != NULL)
  104                 (*splash_callback)(SPLASH_INIT, splash_arg);
  105 }
  106 
  107 int
  108 splash_register(splash_decoder_t *decoder)
  109 {
  110         splash_decoder_t **p;
  111         int error;
  112         int i;
  113 
  114         if (splash_adp != NULL) {
  115                 /*
  116                  * If the video card has aleady been initialized, test
  117                  * this decoder immediately.
  118                  */
  119                 error = splash_test(decoder);
  120                 if (error == 0) {
  121                         /* replace the current decoder with new one */
  122                         if (splash_decoder != NULL)
  123                                 error = splash_term(splash_adp);
  124                         if (error == 0)
  125                                 splash_new(decoder);
  126                 }
  127                 return error;
  128         } else {
  129                 /* register the decoder for later use */
  130                 for (i = 0; i < decoders; ++i) {
  131                         if (decoder_set[i] == NULL)
  132                                 break;
  133                 }
  134                 if ((i >= decoders) && (decoders % DECODER_ARRAY_DELTA) == 0) {
  135                         p = malloc(sizeof(*p)*(decoders + DECODER_ARRAY_DELTA),
  136                                 M_DEVBUF, M_NOWAIT);
  137                         if (p == NULL)
  138                                 return ENOMEM;
  139                         if (decoder_set != NULL) {
  140                                 bcopy(decoder_set, p, sizeof(*p)*decoders);
  141                                 free(decoder_set, M_DEVBUF);
  142                         }
  143                         decoder_set = p;
  144                         i = decoders++;
  145                 }
  146                 decoder_set[i] = decoder;
  147         }
  148 
  149         return 0;
  150 }
  151 
  152 int
  153 splash_unregister(splash_decoder_t *decoder)
  154 {
  155         int error;
  156 
  157         if (splash_decoder == decoder) {
  158                 if ((error = splash_term(splash_adp)) != 0)
  159                         return error;
  160         }
  161         return 0;
  162 }
  163 
  164 int
  165 splash_init(video_adapter_t *adp, int (*callback)(int, void *), void *arg)
  166 {
  167         int i;
  168 
  169         splash_adp = adp;
  170         splash_callback = callback;
  171         splash_arg = arg;
  172 
  173         splash_decoder = NULL;
  174         for (i = 0; i < decoders; ++i) {
  175                 if (decoder_set[i] == NULL)
  176                         continue;
  177                 if (splash_test(decoder_set[i]) == 0) {
  178                         splash_new(decoder_set[i]);
  179                         break;
  180                 }
  181                 decoder_set[i] = NULL;
  182         }
  183         for (++i; i < decoders; ++i) {
  184                 decoder_set[i] = NULL;
  185         }
  186         return 0;
  187 }
  188 
  189 int
  190 splash_term(video_adapter_t *adp)
  191 {
  192         int error = 0;
  193 
  194         if (splash_adp != adp)
  195                 return EINVAL;
  196         if (splash_decoder != NULL) {
  197                 if (splash_callback != NULL)
  198                         error = (*splash_callback)(SPLASH_TERM, splash_arg);
  199                 if (error == 0 && splash_decoder->term)
  200                         error = (*splash_decoder->term)(adp);
  201                 if (error == 0)
  202                         splash_decoder = NULL;
  203         }
  204         return error;
  205 }
  206 
  207 int
  208 splash(video_adapter_t *adp, int on)
  209 {
  210         if (splash_decoder != NULL)
  211                 return (*splash_decoder->splash)(adp, on);
  212         return ENODEV;
  213 }

Cache object: 0216c5ac64e0fa2a0a4c7ffa6958ff7e


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.