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/* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86isaBus.c,v 3.3 2000/02/08 13:13:06 eich Exp $ */
/*
* Copyright (c) 1997-1999 by The XFree86 Project, Inc.
*/
/*
* 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"
/*
* If the slot requested is already in use, return FALSE.
* Otherwise, claim the slot for the screen requesting it.
*/
int
xf86ClaimIsaSlot(DriverPtr drvp, int chipset, GDevPtr dev, Bool active)
{
EntityPtr p;
BusAccPtr pbap = xf86BusAccInfo;
int num;
num = xf86AllocateEntity();
p = xf86Entities[num];
p->driver = drvp;
p->chipset = chipset;
p->busType = BUS_ISA;
p->device = dev;
p->active = active;
p->inUse = FALSE;
p->access = xnfcalloc(1,sizeof(EntityAccessRec));
p->access->fallback = &AccessNULL;
p->access->pAccess = &AccessNULL;
p->busAcc = NULL;
while (pbap) {
if (pbap->type == BUS_ISA)
p->busAcc = pbap;
pbap = pbap->next;
}
return num;
}
/*
* Get the list of ISA "slots" claimed by a screen
*
* Note: The ISA implementation here assumes that only one ISA "slot" type
* can be claimed by any one screen. That means a return value other than
* 0 or 1 isn't useful.
*/
int
xf86GetIsaInfoForScreen(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_ISA) {
num++;
}
}
return num;
}
/*
* Parse a BUS ID string, and return True if it is a ISA bus id.
*/
Bool
xf86ParseIsaBusString(const char *busID)
{
/*
* The format assumed to be "isa" or "isa:"
*/
return (StringToBusType(busID,NULL) == BUS_ISA);
}
/*
* xf86IsPrimaryIsa() -- return TRUE if primary device
* is ISA.
*/
Bool
xf86IsPrimaryIsa(void)
{
return ( primaryBus.type == BUS_ISA );
}
void
isaConvertRange2Host(resRange *pRange)
{
return;
}
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