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 * $Id: splash.c,v 1.1 1999/01/09 02:44:49 yokota Exp $ 27 */ 28 29 #include "splash.h" 30 31 #if NSPLASH > 0 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/kernel.h> 36 #include <sys/malloc.h> 37 #include <sys/linker.h> 38 39 #include <machine/console.h> 40 41 #include <dev/fb/fbreg.h> 42 #include <dev/fb/splashreg.h> 43 44 /* video adapter and image decoder */ 45 static video_adapter_t *splash_adp; 46 static splash_decoder_t *splash_decoder; 47 48 /* decoder candidates */ 49 static int decoders; 50 static splash_decoder_t **decoder_set; 51 #define DECODER_ARRAY_DELTA 4 52 53 /* console driver callback */ 54 static int (*splash_callback)(int); 55 56 static int 57 splash_find_data(splash_decoder_t *decoder) 58 { 59 caddr_t image_module; 60 caddr_t p; 61 62 if (decoder->data_type == NULL) 63 return 0; 64 image_module = preload_search_by_type(decoder->data_type); 65 if (image_module == NULL) 66 return ENOENT; 67 p = preload_search_info(image_module, MODINFO_ADDR); 68 if (p == NULL) 69 return ENOENT; 70 decoder->data = *(void **)p; 71 p = preload_search_info(image_module, MODINFO_SIZE); 72 if (p == NULL) 73 return ENOENT; 74 decoder->data_size = *(size_t *)p; 75 if (bootverbose) 76 printf("splash: image@%p, size:%u\n", 77 decoder->data, decoder->data_size); 78 return 0; 79 } 80 81 static int 82 splash_test(splash_decoder_t *decoder) 83 { 84 if (splash_find_data(decoder)) 85 return ENOENT; /* XXX */ 86 if ((*decoder->init)(splash_adp)) { 87 decoder->data = NULL; 88 decoder->data_size = 0; 89 return ENODEV; /* XXX */ 90 } 91 if (bootverbose) 92 printf("splash: image decoder found: %s\n", decoder->name); 93 return 0; 94 } 95 96 static void 97 splash_new(splash_decoder_t *decoder) 98 { 99 splash_decoder = decoder; 100 if (splash_callback != NULL) 101 (*splash_callback)(SPLASH_INIT); 102 } 103 104 int 105 splash_register(splash_decoder_t *decoder) 106 { 107 splash_decoder_t **p; 108 int error; 109 int i; 110 111 if (splash_adp != NULL) { 112 /* 113 * If the video card has aleady been initialized, test 114 * this decoder immediately. 115 */ 116 error = splash_test(decoder); 117 if (error == 0) { 118 /* replace the current decoder with new one */ 119 if (splash_decoder != NULL) 120 error = splash_term(splash_adp); 121 if (error == 0) 122 splash_new(decoder); 123 } 124 return error; 125 } else { 126 /* register the decoder for later use */ 127 for (i = 0; i < decoders; ++i) { 128 if (decoder_set[i] == NULL) 129 break; 130 } 131 if ((i >= decoders) && (decoders % DECODER_ARRAY_DELTA) == 0) { 132 p = malloc(sizeof(*p)*(decoders + DECODER_ARRAY_DELTA), 133 M_DEVBUF, M_NOWAIT); 134 if (p == NULL) 135 return ENOMEM; 136 if (decoder_set != NULL) 137 bcopy(decoder_set, p, sizeof(*p)*decoders); 138 free(decoder_set, M_DEVBUF); 139 decoder_set = p; 140 i = decoders++; 141 } 142 decoder_set[i] = decoder; 143 } 144 145 return 0; 146 } 147 148 int 149 splash_unregister(splash_decoder_t *decoder) 150 { 151 int error; 152 153 if (splash_decoder == decoder) { 154 if ((error = splash_term(splash_adp)) != 0) 155 return error; 156 } 157 return 0; 158 } 159 160 int 161 splash_init(video_adapter_t *adp, int (*callback)(int)) 162 { 163 int i; 164 165 splash_adp = adp; 166 splash_callback = callback; 167 168 splash_decoder = NULL; 169 for (i = 0; i < decoders; ++i) { 170 if (decoder_set[i] == NULL) 171 continue; 172 if (splash_test(decoder_set[i]) == 0) { 173 splash_new(decoder_set[i]); 174 break; 175 } 176 decoder_set[i] = NULL; 177 } 178 for (++i; i < decoders; ++i) { 179 decoder_set[i] = NULL; 180 } 181 return 0; 182 } 183 184 int 185 splash_term(video_adapter_t *adp) 186 { 187 int error = 0; 188 189 if (splash_decoder != NULL) { 190 if (splash_callback != NULL) 191 error = (*splash_callback)(SPLASH_TERM); 192 if (error == 0) 193 error = (*splash_decoder->term)(adp); 194 if (error == 0) 195 splash_decoder = NULL; 196 } 197 return error; 198 } 199 200 int 201 splash(video_adapter_t *adp, int on) 202 { 203 if (splash_decoder != NULL) 204 return (*splash_decoder->splash)(adp, on); 205 return ENODEV; 206 } 207 208 #endif /* NSPLASH > 0 */ 209