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