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 * $FreeBSD$ 27 */ 28 29 #include "opt_splash.h" 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/malloc.h> 34 #include <sys/linker.h> 35 #include <sys/fbio.h> 36 #include <sys/kernel.h> 37 38 #include <dev/fb/fbreg.h> 39 #include <dev/fb/splashreg.h> 40 41 MODULE_VERSION(splash, 1); 42 43 /* video adapter and image decoder */ 44 static video_adapter_t *splash_adp; 45 static splash_decoder_t *splash_decoder; 46 47 /* decoder candidates */ 48 static int decoders; 49 static splash_decoder_t **decoder_set; 50 #define DECODER_ARRAY_DELTA 4 51 52 /* console driver callback */ 53 static int (*splash_callback)(int, void *); 54 static void *splash_arg; 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:%lu\n", 77 (void *)decoder->data, (long)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 && (*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, splash_arg); 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 } 140 decoder_set = p; 141 i = decoders++; 142 } 143 decoder_set[i] = decoder; 144 } 145 146 return 0; 147 } 148 149 int 150 splash_unregister(splash_decoder_t *decoder) 151 { 152 int error; 153 154 if (splash_decoder == decoder) { 155 if ((error = splash_term(splash_adp)) != 0) 156 return error; 157 } 158 return 0; 159 } 160 161 int 162 splash_init(video_adapter_t *adp, int (*callback)(int, void *), void *arg) 163 { 164 int i; 165 166 splash_adp = adp; 167 splash_callback = callback; 168 splash_arg = arg; 169 170 splash_decoder = NULL; 171 for (i = 0; i < decoders; ++i) { 172 if (decoder_set[i] == NULL) 173 continue; 174 if (splash_test(decoder_set[i]) == 0) { 175 splash_new(decoder_set[i]); 176 break; 177 } 178 decoder_set[i] = NULL; 179 } 180 for (++i; i < decoders; ++i) { 181 decoder_set[i] = NULL; 182 } 183 return 0; 184 } 185 186 int 187 splash_term(video_adapter_t *adp) 188 { 189 int error = 0; 190 191 if (splash_adp != adp) 192 return EINVAL; 193 if (splash_decoder != NULL) { 194 if (splash_callback != NULL) 195 error = (*splash_callback)(SPLASH_TERM, splash_arg); 196 if (error == 0 && splash_decoder->term) 197 error = (*splash_decoder->term)(adp); 198 if (error == 0) 199 splash_decoder = NULL; 200 } 201 return error; 202 } 203 204 int 205 splash(video_adapter_t *adp, int on) 206 { 207 if (splash_decoder != NULL) 208 return (*splash_decoder->splash)(adp, on); 209 return ENODEV; 210 } 211