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/*
* Mach Operating System
* Copyright (c) 1991,1990,1989 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
* File: screen_switch.c
* Author: Alessandro Forin, Carnegie Mellon University
* Date: 9/90
*
* Autoconfiguration code for the Generic Screen Driver.
*/
#include <platforms.h>
#if defined(DECSTATION) || defined(FLAMINGO)
#include <fb.h>
#include <gx.h>
#include <cfb.h>
#include <mfb.h>
#include <xcfb.h>
#include <sfb.h>
#endif
#ifdef VAXSTATION
#define NGX 0
#define NCFB 0
#define NXCFB 0
#endif
#include <chips/screen_switch.h>
/* When nothing needed */
int screen_noop()
{}
/*
* Vector of graphic interface drivers to probe.
* Zero terminate this list.
*/
#if NGX > 0
extern int gq_probe(), gq_cold_init();
extern unsigned int gq_mem_need();
extern int ga_probe(), ga_cold_init();
extern unsigned int ga_mem_need();
#endif /* NGX > 0 */
#if NCFB > 0
extern int cfb_probe(), cfb_cold_init();
extern unsigned int pm_mem_need();
#endif /* NCFB > 0 */
#if NMFB > 0
extern int fb_probe(), fb_cold_init();
extern unsigned int pm_mem_need();
#endif /* NMFB > 0 */
#if NXCFB > 0
extern int xcfb_probe(), xcfb_cold_init();
extern unsigned int pm_mem_need();
#endif /* NXCFB > 0 */
#if NSFB > 0
extern int sfb_probe(), sfb_cold_init();
extern unsigned int pm_mem_need();
#endif /* NSFB > 0 */
#if NFB > 0
extern int pm_probe(), pm_cold_init();
extern unsigned int pm_mem_need();
#endif /* NFB > 0 */
struct screen_probe_vector screen_probe_vector[] = {
#if NGX > 0
gq_probe, gq_mem_need, gq_cold_init, /* 3max 3D color option */
ga_probe, ga_mem_need, ga_cold_init, /* 3max 2D color option */
#endif /* NGX > 0 */
#if NSFB > 0
sfb_probe, pm_mem_need, sfb_cold_init, /* Smart frame buffer */
#endif /* NSFB > 0 */
#if NMFB > 0
fb_probe, pm_mem_need, fb_cold_init, /* 3max/3min 1D(?) mono option */
#endif /* NMFB > 0 */
#if NCFB > 0
cfb_probe, pm_mem_need, cfb_cold_init, /* 3max 1D(?) color option */
#endif /* NCFB > 0 */
#if NXCFB > 0
xcfb_probe, pm_mem_need, xcfb_cold_init,/* MAXine frame buffer */
#endif /* NXCFB > 0 */
#if NFB > 0
pm_probe, pm_mem_need, pm_cold_init, /* "pm" mono/color (pmax) */
#endif
0,
};
char *screen_data; /* opaque */
int screen_find()
{
struct screen_probe_vector *p = screen_probe_vector;
for (;p->probe; p++)
if ((*p->probe)()) {
(*p->setup)(0/*XXX*/, screen_data);
return 1;
}
return 0;
}
unsigned int
screen_memory_alloc(avail)
char *avail;
{
struct screen_probe_vector *p = screen_probe_vector;
int size;
for (; p->probe; p++)
if ((*p->probe) ()) {
screen_data = avail;
size = (*p->alloc) ();
bzero(screen_data, size);
return size;
}
return 0;
}
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