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-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-2  -  FREEBSD-11-1  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-4  -  FREEBSD-10-3  -  FREEBSD-10-2  -  FREEBSD-10-1  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-3  -  FREEBSD-9-2  -  FREEBSD-9-1  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-4  -  FREEBSD-8-3  -  FREEBSD-8-2  -  FREEBSD-8-1  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-4  -  FREEBSD-7-3  -  FREEBSD-7-2  -  FREEBSD-7-1  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-4  -  FREEBSD-6-3  -  FREEBSD-6-2  -  FREEBSD-6-1  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-5  -  FREEBSD-5-4  -  FREEBSD-5-3  -  FREEBSD-5-2  -  FREEBSD-5-1  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  linux-2.6  -  linux-2.4.22  -  MK83  -  MK84  -  PLAN9  -  DFBSD  -  NETBSD  -  NETBSD5  -  NETBSD4  -  NETBSD3  -  NETBSD20  -  OPENBSD  -  xnu-517  -  xnu-792  -  xnu-792.6.70  -  xnu-1228  -  xnu-1456.1.26  -  xnu-1699.24.8  -  xnu-2050.18.24  -  OPENSOLARIS  -  minix-3-1-1 
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/11.0/sys/dev/fb/splash.c 298955 2016-05-03 03:41:25Z pfg $");
   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         void *ptr;
   64         size_t sz;
   65 
   66         if (decoder->data_type == NULL)
   67                 return (0);
   68 
   69         image_module = preload_search_by_type(decoder->data_type);
   70         if (image_module == NULL)
   71                 return (ENOENT);
   72 
   73         ptr = preload_fetch_addr(image_module);
   74         sz = preload_fetch_size(image_module);
   75         if (ptr == NULL || sz == 0)
   76                 return (ENOENT);
   77 
   78         if (bootverbose)
   79                 printf("splash: image@%p, size:%zu\n", ptr, sz);
   80 
   81         decoder->data = ptr;
   82         decoder->data_size = sz;
   83         return (0);
   84 }
   85 
   86 static int
   87 splash_test(splash_decoder_t *decoder)
   88 {
   89         if (splash_find_data(decoder))
   90                 return ENOENT;  /* XXX */
   91         if (*decoder->init && (*decoder->init)(splash_adp)) {
   92                 decoder->data = NULL;
   93                 decoder->data_size = 0;
   94                 return ENODEV;  /* XXX */
   95         }
   96         if (bootverbose)
   97                 printf("splash: image decoder found: %s\n", decoder->name);
   98         return 0;
   99 }
  100 
  101 static void
  102 splash_new(splash_decoder_t *decoder)
  103 {
  104         splash_decoder = decoder;
  105         if (splash_callback != NULL)
  106                 (*splash_callback)(SPLASH_INIT, splash_arg);
  107 }
  108 
  109 int
  110 splash_register(splash_decoder_t *decoder)
  111 {
  112         splash_decoder_t **p;
  113         int error;
  114         int i;
  115 
  116         if (splash_adp != NULL) {
  117                 /*
  118                  * If the video card has already been initialized, test
  119                  * this decoder immediately.
  120                  */
  121                 error = splash_test(decoder);
  122                 if (error == 0) {
  123                         /* replace the current decoder with new one */
  124                         if (splash_decoder != NULL)
  125                                 error = splash_term(splash_adp);
  126                         if (error == 0)
  127                                 splash_new(decoder);
  128                 }
  129                 return error;
  130         } else {
  131                 /* register the decoder for later use */
  132                 for (i = 0; i < decoders; ++i) {
  133                         if (decoder_set[i] == NULL)
  134                                 break;
  135                 }
  136                 if ((i >= decoders) && (decoders % DECODER_ARRAY_DELTA) == 0) {
  137                         p = malloc(sizeof(*p)*(decoders + DECODER_ARRAY_DELTA),
  138                                 M_DEVBUF, M_NOWAIT);
  139                         if (p == NULL)
  140                                 return ENOMEM;
  141                         if (decoder_set != NULL) {
  142                                 bcopy(decoder_set, p, sizeof(*p)*decoders);
  143                                 free(decoder_set, M_DEVBUF);
  144                         }
  145                         decoder_set = p;
  146                         i = decoders++;
  147                 }
  148                 decoder_set[i] = decoder;
  149         }
  150 
  151         return 0;
  152 }
  153 
  154 int
  155 splash_unregister(splash_decoder_t *decoder)
  156 {
  157         int error;
  158 
  159         if (splash_decoder == decoder) {
  160                 if ((error = splash_term(splash_adp)) != 0)
  161                         return error;
  162         }
  163         return 0;
  164 }
  165 
  166 int
  167 splash_init(video_adapter_t *adp, int (*callback)(int, void *), void *arg)
  168 {
  169         int i;
  170 
  171         splash_adp = adp;
  172         splash_callback = callback;
  173         splash_arg = arg;
  174 
  175         splash_decoder = NULL;
  176         for (i = 0; i < decoders; ++i) {
  177                 if (decoder_set[i] == NULL)
  178                         continue;
  179                 if (splash_test(decoder_set[i]) == 0) {
  180                         splash_new(decoder_set[i]);
  181                         break;
  182                 }
  183                 decoder_set[i] = NULL;
  184         }
  185         for (++i; i < decoders; ++i) {
  186                 decoder_set[i] = NULL;
  187         }
  188         return 0;
  189 }
  190 
  191 int
  192 splash_term(video_adapter_t *adp)
  193 {
  194         int error = 0;
  195 
  196         if (splash_adp != adp)
  197                 return EINVAL;
  198         if (splash_decoder != NULL) {
  199                 if (splash_callback != NULL)
  200                         error = (*splash_callback)(SPLASH_TERM, splash_arg);
  201                 if (error == 0 && splash_decoder->term)
  202                         error = (*splash_decoder->term)(adp);
  203                 if (error == 0)
  204                         splash_decoder = NULL;
  205         }
  206         return error;
  207 }
  208 
  209 int
  210 splash(video_adapter_t *adp, int on)
  211 {
  212         if (splash_decoder != NULL)
  213                 return (*splash_decoder->splash)(adp, on);
  214         return ENODEV;
  215 }

Cache object: aa25fccc88b7bb88c40a11dc723f5752


[ 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.