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 * $FreeBSD: src/sys/dev/fb/splash.c,v 1.8 2000/01/29 14:42:57 peter Exp $ 27 * $DragonFly: src/sys/dev/video/fb/splash.c,v 1.3 2003/08/07 21:17:16 dillon Exp $ 28 */ 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/kernel.h> 33 #include <sys/malloc.h> 34 #include <sys/linker.h> 35 #include <sys/fbio.h> 36 37 #include "fbreg.h" 38 #include "splashreg.h" 39 40 /* video adapter and image decoder */ 41 static video_adapter_t *splash_adp; 42 static splash_decoder_t *splash_decoder; 43 44 /* decoder candidates */ 45 static int decoders; 46 static splash_decoder_t **decoder_set; 47 #define DECODER_ARRAY_DELTA 4 48 49 /* console driver callback */ 50 static int (*splash_callback)(int, void *); 51 static void *splash_arg; 52 53 static int 54 splash_find_data(splash_decoder_t *decoder) 55 { 56 caddr_t image_module; 57 caddr_t p; 58 59 if (decoder->data_type == NULL) 60 return 0; 61 image_module = preload_search_by_type(decoder->data_type); 62 if (image_module == NULL) 63 return ENOENT; 64 p = preload_search_info(image_module, MODINFO_ADDR); 65 if (p == NULL) 66 return ENOENT; 67 decoder->data = *(void **)p; 68 p = preload_search_info(image_module, MODINFO_SIZE); 69 if (p == NULL) 70 return ENOENT; 71 decoder->data_size = *(size_t *)p; 72 if (bootverbose) 73 printf("splash: image@%p, size:%lu\n", 74 (void *)decoder->data, (long)decoder->data_size); 75 return 0; 76 } 77 78 static int 79 splash_test(splash_decoder_t *decoder) 80 { 81 if (splash_find_data(decoder)) 82 return ENOENT; /* XXX */ 83 if (*decoder->init && (*decoder->init)(splash_adp)) { 84 decoder->data = NULL; 85 decoder->data_size = 0; 86 return ENODEV; /* XXX */ 87 } 88 if (bootverbose) 89 printf("splash: image decoder found: %s\n", decoder->name); 90 return 0; 91 } 92 93 static void 94 splash_new(splash_decoder_t *decoder) 95 { 96 splash_decoder = decoder; 97 if (splash_callback != NULL) 98 (*splash_callback)(SPLASH_INIT, splash_arg); 99 } 100 101 int 102 splash_register(splash_decoder_t *decoder) 103 { 104 splash_decoder_t **p; 105 int error; 106 int i; 107 108 if (splash_adp != NULL) { 109 /* 110 * If the video card has aleady been initialized, test 111 * this decoder immediately. 112 */ 113 error = splash_test(decoder); 114 if (error == 0) { 115 /* replace the current decoder with new one */ 116 if (splash_decoder != NULL) 117 error = splash_term(splash_adp); 118 if (error == 0) 119 splash_new(decoder); 120 } 121 return error; 122 } else { 123 /* register the decoder for later use */ 124 for (i = 0; i < decoders; ++i) { 125 if (decoder_set[i] == NULL) 126 break; 127 } 128 if ((i >= decoders) && (decoders % DECODER_ARRAY_DELTA) == 0) { 129 p = malloc(sizeof(*p)*(decoders + DECODER_ARRAY_DELTA), 130 M_DEVBUF, M_NOWAIT); 131 if (p == NULL) 132 return ENOMEM; 133 if (decoder_set != NULL) { 134 bcopy(decoder_set, p, sizeof(*p)*decoders); 135 free(decoder_set, M_DEVBUF); 136 } 137 decoder_set = p; 138 i = decoders++; 139 } 140 decoder_set[i] = decoder; 141 } 142 143 return 0; 144 } 145 146 int 147 splash_unregister(splash_decoder_t *decoder) 148 { 149 int error; 150 151 if (splash_decoder == decoder) { 152 if ((error = splash_term(splash_adp)) != 0) 153 return error; 154 } 155 return 0; 156 } 157 158 int 159 splash_init(video_adapter_t *adp, int (*callback)(int, void *), void *arg) 160 { 161 int i; 162 163 splash_adp = adp; 164 splash_callback = callback; 165 splash_arg = arg; 166 167 splash_decoder = NULL; 168 for (i = 0; i < decoders; ++i) { 169 if (decoder_set[i] == NULL) 170 continue; 171 if (splash_test(decoder_set[i]) == 0) { 172 splash_new(decoder_set[i]); 173 break; 174 } 175 decoder_set[i] = NULL; 176 } 177 for (++i; i < decoders; ++i) { 178 decoder_set[i] = NULL; 179 } 180 return 0; 181 } 182 183 int 184 splash_term(video_adapter_t *adp) 185 { 186 int error = 0; 187 188 if (splash_adp != adp) 189 return EINVAL; 190 if (splash_decoder != NULL) { 191 if (splash_callback != NULL) 192 error = (*splash_callback)(SPLASH_TERM, splash_arg); 193 if (error == 0 && splash_decoder->term) 194 error = (*splash_decoder->term)(adp); 195 if (error == 0) 196 splash_decoder = NULL; 197 } 198 return error; 199 } 200 201 int 202 splash(video_adapter_t *adp, int on) 203 { 204 if (splash_decoder != NULL) 205 return (*splash_decoder->splash)(adp, on); 206 return ENODEV; 207 } 208