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