1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer as 12 * the first lines of this file unmodified. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include "opt_splash.h" 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/malloc.h> 38 #include <sys/linker.h> 39 #include <sys/fbio.h> 40 #include <sys/kernel.h> 41 #include <sys/module.h> 42 43 #include <dev/fb/fbreg.h> 44 #include <dev/fb/splashreg.h> 45 46 MODULE_VERSION(splash, 1); 47 48 /* video adapter and image decoder */ 49 static video_adapter_t *splash_adp; 50 static splash_decoder_t *splash_decoder; 51 52 /* decoder candidates */ 53 static int decoders; 54 static splash_decoder_t **decoder_set; 55 #define DECODER_ARRAY_DELTA 4 56 57 /* console driver callback */ 58 static int (*splash_callback)(int, void *); 59 static void *splash_arg; 60 61 static int 62 splash_find_data(splash_decoder_t *decoder) 63 { 64 caddr_t image_module; 65 void *ptr; 66 size_t sz; 67 68 if (decoder->data_type == NULL) 69 return (0); 70 71 image_module = preload_search_by_type(decoder->data_type); 72 if (image_module == NULL) 73 return (ENOENT); 74 75 ptr = preload_fetch_addr(image_module); 76 sz = preload_fetch_size(image_module); 77 if (ptr == NULL || sz == 0) 78 return (ENOENT); 79 80 if (bootverbose) 81 printf("splash: image@%p, size:%zu\n", ptr, sz); 82 83 decoder->data = ptr; 84 decoder->data_size = sz; 85 return (0); 86 } 87 88 static int 89 splash_test(splash_decoder_t *decoder) 90 { 91 if (splash_find_data(decoder)) 92 return ENOENT; /* XXX */ 93 if (*decoder->init && (*decoder->init)(splash_adp)) { 94 decoder->data = NULL; 95 decoder->data_size = 0; 96 return ENODEV; /* XXX */ 97 } 98 if (bootverbose) 99 printf("splash: image decoder found: %s\n", decoder->name); 100 return 0; 101 } 102 103 static void 104 splash_new(splash_decoder_t *decoder) 105 { 106 splash_decoder = decoder; 107 if (splash_callback != NULL) 108 (*splash_callback)(SPLASH_INIT, splash_arg); 109 } 110 111 int 112 splash_register(splash_decoder_t *decoder) 113 { 114 splash_decoder_t **p; 115 int error; 116 int i; 117 118 if (splash_adp != NULL) { 119 /* 120 * If the video card has already been initialized, test 121 * this decoder immediately. 122 */ 123 error = splash_test(decoder); 124 if (error == 0) { 125 /* replace the current decoder with new one */ 126 if (splash_decoder != NULL) 127 error = splash_term(splash_adp); 128 if (error == 0) 129 splash_new(decoder); 130 } 131 return error; 132 } else { 133 /* register the decoder for later use */ 134 for (i = 0; i < decoders; ++i) { 135 if (decoder_set[i] == NULL) 136 break; 137 } 138 if ((i >= decoders) && (decoders % DECODER_ARRAY_DELTA) == 0) { 139 p = malloc(sizeof(*p)*(decoders + DECODER_ARRAY_DELTA), 140 M_DEVBUF, M_NOWAIT); 141 if (p == NULL) 142 return ENOMEM; 143 if (decoder_set != NULL) { 144 bcopy(decoder_set, p, sizeof(*p)*decoders); 145 free(decoder_set, M_DEVBUF); 146 } 147 decoder_set = p; 148 i = decoders++; 149 } 150 decoder_set[i] = decoder; 151 } 152 153 return 0; 154 } 155 156 int 157 splash_unregister(splash_decoder_t *decoder) 158 { 159 int error; 160 161 if (splash_decoder == decoder) { 162 if ((error = splash_term(splash_adp)) != 0) 163 return error; 164 } 165 return 0; 166 } 167 168 int 169 splash_init(video_adapter_t *adp, int (*callback)(int, void *), void *arg) 170 { 171 int i; 172 173 splash_adp = adp; 174 splash_callback = callback; 175 splash_arg = arg; 176 177 splash_decoder = NULL; 178 for (i = 0; i < decoders; ++i) { 179 if (decoder_set[i] == NULL) 180 continue; 181 if (splash_test(decoder_set[i]) == 0) { 182 splash_new(decoder_set[i]); 183 break; 184 } 185 decoder_set[i] = NULL; 186 } 187 for (++i; i < decoders; ++i) { 188 decoder_set[i] = NULL; 189 } 190 return 0; 191 } 192 193 int 194 splash_term(video_adapter_t *adp) 195 { 196 int error = 0; 197 198 if (splash_adp != adp) 199 return EINVAL; 200 if (splash_decoder != NULL) { 201 if (splash_callback != NULL) 202 error = (*splash_callback)(SPLASH_TERM, splash_arg); 203 if (error == 0 && splash_decoder->term) 204 error = (*splash_decoder->term)(adp); 205 if (error == 0) 206 splash_decoder = NULL; 207 } 208 return error; 209 } 210 211 int 212 splash(video_adapter_t *adp, int on) 213 { 214 if (splash_decoder != NULL) 215 return (*splash_decoder->splash)(adp, on); 216 return ENODEV; 217 } 218