diff options
Diffstat (limited to 'sys/dev/fb/splash.c')
| -rw-r--r-- | sys/dev/fb/splash.c | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/sys/dev/fb/splash.c b/sys/dev/fb/splash.c new file mode 100644 index 0000000..6f27f08 --- /dev/null +++ b/sys/dev/fb/splash.c @@ -0,0 +1,210 @@ +/*- + * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer as + * the first lines of this file unmodified. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include "opt_splash.h" + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/malloc.h> +#include <sys/linker.h> +#include <sys/fbio.h> +#include <sys/kernel.h> + +#include <dev/fb/fbreg.h> +#include <dev/fb/splashreg.h> + +MODULE_VERSION(splash, 1); + +/* video adapter and image decoder */ +static video_adapter_t *splash_adp; +static splash_decoder_t *splash_decoder; + +/* decoder candidates */ +static int decoders; +static splash_decoder_t **decoder_set; +#define DECODER_ARRAY_DELTA 4 + +/* console driver callback */ +static int (*splash_callback)(int, void *); +static void *splash_arg; + +static int +splash_find_data(splash_decoder_t *decoder) +{ + caddr_t image_module; + caddr_t p; + + if (decoder->data_type == NULL) + return 0; + image_module = preload_search_by_type(decoder->data_type); + if (image_module == NULL) + return ENOENT; + p = preload_search_info(image_module, MODINFO_ADDR); + if (p == NULL) + return ENOENT; + decoder->data = *(void **)p; + p = preload_search_info(image_module, MODINFO_SIZE); + if (p == NULL) + return ENOENT; + decoder->data_size = *(size_t *)p; + if (bootverbose) + printf("splash: image@%p, size:%lu\n", + (void *)decoder->data, (long)decoder->data_size); + return 0; +} + +static int +splash_test(splash_decoder_t *decoder) +{ + if (splash_find_data(decoder)) + return ENOENT; /* XXX */ + if (*decoder->init && (*decoder->init)(splash_adp)) { + decoder->data = NULL; + decoder->data_size = 0; + return ENODEV; /* XXX */ + } + if (bootverbose) + printf("splash: image decoder found: %s\n", decoder->name); + return 0; +} + +static void +splash_new(splash_decoder_t *decoder) +{ + splash_decoder = decoder; + if (splash_callback != NULL) + (*splash_callback)(SPLASH_INIT, splash_arg); +} + +int +splash_register(splash_decoder_t *decoder) +{ + splash_decoder_t **p; + int error; + int i; + + if (splash_adp != NULL) { + /* + * If the video card has aleady been initialized, test + * this decoder immediately. + */ + error = splash_test(decoder); + if (error == 0) { + /* replace the current decoder with new one */ + if (splash_decoder != NULL) + error = splash_term(splash_adp); + if (error == 0) + splash_new(decoder); + } + return error; + } else { + /* register the decoder for later use */ + for (i = 0; i < decoders; ++i) { + if (decoder_set[i] == NULL) + break; + } + if ((i >= decoders) && (decoders % DECODER_ARRAY_DELTA) == 0) { + p = malloc(sizeof(*p)*(decoders + DECODER_ARRAY_DELTA), + M_DEVBUF, M_NOWAIT); + if (p == NULL) + return ENOMEM; + if (decoder_set != NULL) { + bcopy(decoder_set, p, sizeof(*p)*decoders); + free(decoder_set, M_DEVBUF); + } + decoder_set = p; + i = decoders++; + } + decoder_set[i] = decoder; + } + + return 0; +} + +int +splash_unregister(splash_decoder_t *decoder) +{ + int error; + + if (splash_decoder == decoder) { + if ((error = splash_term(splash_adp)) != 0) + return error; + } + return 0; +} + +int +splash_init(video_adapter_t *adp, int (*callback)(int, void *), void *arg) +{ + int i; + + splash_adp = adp; + splash_callback = callback; + splash_arg = arg; + + splash_decoder = NULL; + for (i = 0; i < decoders; ++i) { + if (decoder_set[i] == NULL) + continue; + if (splash_test(decoder_set[i]) == 0) { + splash_new(decoder_set[i]); + break; + } + decoder_set[i] = NULL; + } + for (++i; i < decoders; ++i) { + decoder_set[i] = NULL; + } + return 0; +} + +int +splash_term(video_adapter_t *adp) +{ + int error = 0; + + if (splash_adp != adp) + return EINVAL; + if (splash_decoder != NULL) { + if (splash_callback != NULL) + error = (*splash_callback)(SPLASH_TERM, splash_arg); + if (error == 0 && splash_decoder->term) + error = (*splash_decoder->term)(adp); + if (error == 0) + splash_decoder = NULL; + } + return error; +} + +int +splash(video_adapter_t *adp, int on) +{ + if (splash_decoder != NULL) + return (*splash_decoder->splash)(adp, on); + return ENODEV; +} |
