/* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86fbBus.c,v 1.4 2004/02/13 23:58:39 dawes Exp $ */

/*
 * Copyright (c) 2000-2001 by The XFree86 Project, Inc.
 * All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject
 * to the following conditions:
 *
 *   1.  Redistributions of source code must retain the above copyright
 *       notice, this list of conditions, and the following disclaimer.
 *
 *   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, and in the same place and form as other copyright,
 *       license and disclaimer information.
 *
 *   3.  The end-user documentation included with the redistribution,
 *       if any, must include the following acknowledgment: "This product
 *       includes software developed by The XFree86 Project, Inc
 *       (http://www.xfree86.org/) and its contributors", in the same
 *       place and form as other third-party acknowledgments.  Alternately,
 *       this acknowledgment may appear in the software itself, in the
 *       same form and location as other such third-party acknowledgments.
 *
 *   4.  Except as contained in this notice, the name of The XFree86
 *       Project, Inc 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 XFree86 Project, Inc.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 XFREE86 PROJECT, INC OR ITS CONTRIBUTORS 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.
 */

/*
 * This file contains the interfaces to the bus-specific code
 */

#include <ctype.h>
#include <stdlib.h>
#include <unistd.h>
#include "X.h"
#include "os.h"
#include "xf86.h"
#include "xf86Priv.h"
#include "xf86Resources.h"

#include "xf86Bus.h"

#define XF86_OS_PRIVS
#define NEED_OS_RAC_PROTOS
#include "xf86_OSproc.h"

#include "xf86RAC.h"

Bool fbSlotClaimed = FALSE;

int
xf86ClaimFbSlot(DriverPtr drvp, int chipset, GDevPtr dev, Bool active)
{
    EntityPtr p;
    int num;
    
    num = xf86AllocateEntity();
    p = xf86Entities[num];
    p->driver = drvp;
    p->chipset = 0;
    p->busType = BUS_NONE;
    p->active = active;
    p->inUse = FALSE;
    xf86AddDevToEntity(num, dev);
    p->access = xnfcalloc(1,sizeof(EntityAccessRec));
    p->access->fallback = &AccessNULL;
    p->access->pAccess = &AccessNULL;
    p->busAcc = NULL;

    fbSlotClaimed = TRUE;
    return num;
}

/*
 * Get the list of FB "slots" claimed by a screen
 */
int
xf86GetFbInfoForScreen(int scrnIndex)
{
    int num = 0;
    int i;
    EntityPtr p;
    
    for (i = 0; i < xf86Screens[scrnIndex]->numEntities; i++) {
	p = xf86Entities[xf86Screens[scrnIndex]->entityList[i]];
  	if (p->busType == BUS_NONE) {
  	    num++;
  	}
    }
    return num;
}