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 <sys/param.h> 30 #include <sys/systm.h> 31 #include <sys/malloc.h> 32 #include <sys/linker.h> 33 #include <sys/fbio.h> 34 #include <sys/kernel.h> 35 36 #include <dev/fb/fbreg.h> 37 #include <dev/fb/splashreg.h> 38 39 MODULE_VERSION(splash, 1); 40 41 /* video adapter and image decoder */ 42 static video_adapter_t *splash_adp; 43 static splash_decoder_t *splash_decoder; 44 45 /* decoder candidates */ 46 static int decoders; 47 static splash_decoder_t **decoder_set; 48 #define DECODER_ARRAY_DELTA 4 49 50 /* console driver callback */ 51 static int (*splash_callback)(int, void *); 52 static void *splash_arg; 53 54 static int 55 splash_find_data(splash_decoder_t *decoder) 56 { 57 caddr_t image_module; 58 caddr_t p; 59 60 if (decoder->data_type == NULL) 61 return 0; 62 image_module = preload_search_by_type(decoder->data_type); 63 if (image_module == NULL) 64 return ENOENT; 65 p = preload_search_info(image_module, MODINFO_ADDR); 66 if (p == NULL) 67 return ENOENT; 68 decoder->data = *(void **)p; 69 p = preload_search_info(image_module, MODINFO_SIZE); 70 if (p == NULL) 71 return ENOENT; 72 decoder->data_size = *(size_t *)p; 73 if (bootverbose) 74 printf("splash: image@%p, size:%lu\n", 75 (void *)decoder->data, (long)decoder->data_size); 76 return 0; 77 } 78 79 static int 80 splash_test(splash_decoder_t *decoder) 81 { 82 if (splash_find_data(decoder)) 83 return ENOENT; /* XXX */ 84 if (*decoder->init && (*decoder->init)(splash_adp)) { 85 decoder->data = NULL; 86 decoder->data_size = 0; 87 return ENODEV; /* XXX */ 88 } 89 if (bootverbose) 90 printf("splash: image decoder found: %s\n", decoder->name); 91 return 0; 92 } 93 94 static void 95 splash_new(splash_decoder_t *decoder) 96 { 97 splash_decoder = decoder; 98 if (splash_callback != NULL) 99 (*splash_callback)(SPLASH_INIT, splash_arg); 100 } 101 102 int 103 splash_register(splash_decoder_t *decoder) 104 { 105 splash_decoder_t **p; 106 int error; 107 int i; 108 109 if (splash_adp != NULL) { 110 /* 111 * If the video card has aleady been initialized, test 112 * this decoder immediately. 113 */ 114 error = splash_test(decoder); 115 if (error == 0) { 116 /* replace the current decoder with new one */ 117 if (splash_decoder != NULL) 118 error = splash_term(splash_adp); 119 if (error == 0) 120 splash_new(decoder); 121 } 122 return error; 123 } else { 124 /* register the decoder for later use */ 125 for (i = 0; i < decoders; ++i) { 126 if (decoder_set[i] == NULL) 127 break; 128 } 129 if ((i >= decoders) && (decoders % DECODER_ARRAY_DELTA) == 0) { 130 p = malloc(sizeof(*p)*(decoders + DECODER_ARRAY_DELTA), 131 M_DEVBUF, M_NOWAIT); 132 if (p == NULL) 133 return ENOMEM; 134 if (decoder_set != NULL) { 135 bcopy(decoder_set, p, sizeof(*p)*decoders); 136 free(decoder_set, M_DEVBUF); 137 } 138 decoder_set = p; 139 i = decoders++; 140 } 141 decoder_set[i] = decoder; 142 } 143 144 return 0; 145 } 146 147 int 148 splash_unregister(splash_decoder_t *decoder) 149 { 150 int error; 151 152 if (splash_decoder == decoder) { 153 if ((error = splash_term(splash_adp)) != 0) 154 return error; 155 } 156 return 0; 157 } 158 159 int 160 splash_init(video_adapter_t *adp, int (*callback)(int, void *), void *arg) 161 { 162 int i; 163 164 splash_adp = adp; 165 splash_callback = callback; 166 splash_arg = arg; 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_adp != adp) 190 return EINVAL; 191 if (splash_decoder != NULL) { 192 if (splash_callback != NULL) 193 error = (*splash_callback)(SPLASH_TERM, splash_arg); 194 if (error == 0 && splash_decoder->term) 195 error = (*splash_decoder->term)(adp); 196 if (error == 0) 197 splash_decoder = NULL; 198 } 199 return error; 200 } 201 202 int 203 splash(video_adapter_t *adp, int on) 204 { 205 if (splash_decoder != NULL) 206 return (*splash_decoder->splash)(adp, on); 207 return ENODEV; 208 } 209