xsrc/xfree/xc/programs/Xserver/hw/netbsd/ews4800mips/ews4800mipsScreen.c

/* $XConsortium: sunFbs.c,v 1.8 94/08/16 13:45:30 dpw Exp $ */
/*
Copyright (c) 1990, 1993  X Consortium

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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The above copyright notice and this permission notice shall be included in
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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Except as contained in this notice, the name of the X Consortium shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from the X Consortium.
 */

/************************************************************
Copyright 1987 by Sun Microsystems, Inc. Mountain View, CA.

                    All Rights Reserved

Permission  to  use,  copy,  modify,  and  distribute   this
software  and  its documentation for any purpose and without
fee is hereby granted, provided that the above copyright no-
tice  appear  in all copies and that both that copyright no-
tice and this permission notice appear in  supporting  docu-
mentation,  and  that the names of Sun or X Consortium
not be used in advertising or publicity pertaining to
distribution  of  the software  without specific prior
written permission. Sun and X Consortium make no
representations about the suitability of this software for
any purpose. It is provided "as is" without any express or
implied warranty.

SUN DISCLAIMS ALL WARRANTIES WITH REGARD TO  THIS  SOFTWARE,
INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FIT-
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ABLE  FOR  ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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********************************************************/

/*
 * Copyright (c) 1987 by the Regents of the University of California
 * Copyright (c) 1987 by Adam de Boor, UC Berkeley
 *
 * Permission to use, copy, modify, and distribute this
 * software and its documentation for any purpose and without
 * fee is hereby granted, provided that the above copyright
 * notice appear in all copies.  The University of California
 * makes no representations about the suitability of this
 * software for any purpose.  It is provided "as is" without
 * express or implied warranty.
 */

/****************************************************************/
/* Modified from  sunCG4C.c for X11R3 by Tom Jarmolowski	*/
/****************************************************************/

#include "ews4800mips.h"
#include <sys/mman.h>
#include <stdio.h>

static int ews4800mipsScreenIndex;
static unsigned long generation = 0;

Bool
ews4800mipsAllocateScreenPrivate(ScreenPtr pScreen)
{
	ews4800mipsScreenPtr    pPrivate;
	extern int AllocateScreenPrivateIndex();

	if (generation != serverGeneration) {
		ews4800mipsScreenIndex = AllocateScreenPrivateIndex();
		if (ews4800mipsScreenIndex < 0)
			return FALSE;
		generation = serverGeneration;
	}
	pPrivate = (ews4800mipsScreenPtr)xalloc(sizeof(ews4800mipsScreenRec));
	if (!pPrivate)
		return FALSE;

	pScreen->devPrivates[ews4800mipsScreenIndex].ptr = (pointer) pPrivate;
	return TRUE;
}

ews4800mipsScreenPtr
ews4800mipsGetScreenPrivate(ScreenPtr pScreen)
{

	return ((ews4800mipsScreenPtr)
	    ((pScreen)->devPrivates[ews4800mipsScreenIndex].ptr));
}

pointer
ews4800mipsMemoryMap (size_t len, off_t off, int fd)
{
	caddr_t	addr;
	pointer	mapaddr;

	len += off;
	addr = 0;
	/*
	 * try and make it private first, that way once we get it, an
	 * interloper, e.g. another server, can't get this frame buffer,
	 * and if another server already has it, this one won't.
	 */
	mapaddr = (pointer)mmap(addr, len, PROT_READ | PROT_WRITE, MAP_SHARED,
	    fd, 0);
	if (mapaddr == (pointer)-1) {
		ews4800mipsError("mapping frame buffer memory");
		(void) close(fd);
		return NULL;
	}

	return mapaddr + off;
}

static Bool
ews4800mipsSaveScreen (ScreenPtr pScreen, int on)
{
	int state;
	ews4800mipsFbPtr pFb = ews4800mipsGetScreenFb(pScreen);

	if (on != SCREEN_SAVER_FORCER) {
		if (on == SCREEN_SAVER_ON)
			state = WSDISPLAYIO_VIDEO_OFF;
		else
			state = WSDISPLAYIO_VIDEO_ON;
		ioctl(pFb->fd, WSDISPLAYIO_SVIDEO, &state);
	}

	return TRUE;
}

static Bool
ews4800mipsCloseScreen(int i, ScreenPtr pScreen)
{
	Bool    ret;
	ews4800mipsScreenPtr pPrivate = ews4800mipsGetScreenPrivate(pScreen);
	ews4800mipsFbPtr pFb = ews4800mipsGetScreenFb(pScreen);
	int mode = WSDISPLAYIO_MODE_EMUL;

	(void) OsSignal(SIGIO, SIG_IGN);
	pScreen->CloseScreen = pPrivate->CloseScreen;
	ret = (*pScreen->CloseScreen)(i, pScreen);
	(void) (*pScreen->SaveScreen)(pScreen, SCREEN_SAVER_OFF);
	ioctl(pFb->fd, WSDISPLAYIO_SMODE, &mode);
	xfree((pointer) pPrivate);

	return ret;
}

Bool
ews4800mipsScreenInit(ScreenPtr pScreen)
{
	extern miPointerScreenFuncRec ews4800mipsPointerScreenFuncs;
	ews4800mipsScreenPtr pPrivate;

	pPrivate = ews4800mipsGetScreenPrivate(pScreen);
	pPrivate->installedMap = 0;
	pPrivate->CloseScreen = pScreen->CloseScreen;
	pScreen->CloseScreen = ews4800mipsCloseScreen;
	pScreen->SaveScreen = ews4800mipsSaveScreen;
	miDCInitialize(pScreen, &ews4800mipsPointerScreenFuncs);

	return TRUE;
}