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/*-
* 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.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#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 <sys/module.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;
void *ptr;
size_t sz;
if (decoder->data_type == NULL)
return (0);
image_module = preload_search_by_type(decoder->data_type);
if (image_module == NULL)
return (ENOENT);
ptr = preload_fetch_addr(image_module);
sz = preload_fetch_size(image_module);
if (ptr == NULL || sz == 0)
return (ENOENT);
if (bootverbose)
printf("splash: image@%p, size:%zu\n", ptr, sz);
decoder->data = ptr;
decoder->data_size = sz;
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;
}
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