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/*-
* $Id:$
*/
#include "splash.h"
#if NSPLASH > 0
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/linker.h>
#include <machine/console.h>
#include <dev/fb/fbreg.h>
#include <dev/fb/splashreg.h>
/* 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
/* splash image data file */
static void *splash_image_data;
static size_t splash_image_size;
/* console driver callback */
static int (*splash_callback)(int);
static int
splash_find_image(void)
{
caddr_t image_module;
caddr_t p;
if (splash_image_data == NULL) {
image_module = preload_search_by_type(SPLASH_IMAGE);
if (image_module == NULL)
return ENOENT;
p = preload_search_info(image_module, MODINFO_ADDR);
if (p == NULL)
return ENOENT;
splash_image_data = *(void **)p;
p = preload_search_info(image_module, MODINFO_SIZE);
if (p == NULL)
return ENOENT;
splash_image_size = *(size_t *)p;
}
return 0;
}
static int
splash_test(splash_decoder_t *decoder)
{
if ((*decoder->init)(splash_adp, splash_image_data, splash_image_size))
return ENODEV; /* XXX */
if (bootverbose)
printf("splash: image decoder found: %s\n", decoder->name);
splash_decoder = decoder;
if (splash_callback != NULL)
(*splash_callback)(SPLASH_INIT);
return 0;
}
int
splash_register(splash_decoder_t *decoder)
{
splash_decoder_t **p;
int i;
/* only one decoder can be active */
if (splash_decoder != NULL)
return ENODEV; /* XXX */
/* if the splash image is not in memory, abort */
splash_find_image();
if (bootverbose)
printf("splash: image@%p, size:%u\n",
splash_image_data, splash_image_size);
if (splash_image_data == NULL)
return ENOENT;
/*
* If the video card has aleady been initialized, test this
* decoder immediately.
*/
if (splash_adp != NULL)
return splash_test(decoder);
/* 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;
int i;
if (splash_decoder == decoder) {
if ((error = splash_term(splash_adp)) != 0)
return error;
}
for (i = 0; i < decoders; ++i) {
if (decoder_set[i] == decoder) {
decoder_set[i] = NULL;
break;
}
}
return 0;
}
int
splash_init(video_adapter_t *adp, int (*callback)(int))
{
int i;
splash_adp = adp;
splash_callback = callback;
/* try registered decoders with this adapter and loaded image */
splash_decoder = NULL;
splash_find_image();
if (splash_image_data == NULL)
return 0;
for (i = 0; i < decoders; ++i) {
if (decoder_set[i] == NULL)
continue;
if (splash_test(decoder_set[i]) == 0)
break;
}
return 0;
}
int
splash_term(video_adapter_t *adp)
{
int error = 0;
if (splash_decoder != NULL) {
if (splash_callback != NULL)
error = (*splash_callback)(SPLASH_TERM);
if (error == 0)
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;
}
#endif /* NSPLASH > 0 */
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