116 lines
2.3 KiB
C
116 lines
2.3 KiB
C
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/* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86isaBus.c,v 3.5 2000/12/06 15:35:11 eich Exp $ */
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/*
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* Copyright (c) 1997-1999 by The XFree86 Project, Inc.
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*/
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/*
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* This file contains the interfaces to the bus-specific code
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*/
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#include <ctype.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "X.h"
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#include "os.h"
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#include "xf86.h"
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#include "xf86Priv.h"
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#include "xf86Resources.h"
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#include "xf86Bus.h"
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#define XF86_OS_PRIVS
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#define NEED_OS_RAC_PROTOS
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#include "xf86_OSproc.h"
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#include "xf86RAC.h"
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Bool isaSlotClaimed = FALSE;
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/*
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* If the slot requested is already in use, return FALSE.
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* Otherwise, claim the slot for the screen requesting it.
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*/
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int
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xf86ClaimIsaSlot(DriverPtr drvp, int chipset, GDevPtr dev, Bool active)
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{
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EntityPtr p;
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BusAccPtr pbap = xf86BusAccInfo;
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int num;
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num = xf86AllocateEntity();
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p = xf86Entities[num];
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p->driver = drvp;
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p->chipset = chipset;
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p->busType = BUS_ISA;
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p->active = active;
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p->inUse = FALSE;
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xf86AddDevToEntity(num, dev);
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p->access = xnfcalloc(1,sizeof(EntityAccessRec));
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p->access->fallback = &AccessNULL;
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p->access->pAccess = &AccessNULL;
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p->busAcc = NULL;
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while (pbap) {
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if (pbap->type == BUS_ISA)
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p->busAcc = pbap;
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pbap = pbap->next;
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}
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isaSlotClaimed = TRUE;
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return num;
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}
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/*
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* Get the list of ISA "slots" claimed by a screen
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*
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* Note: The ISA implementation here assumes that only one ISA "slot" type
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* can be claimed by any one screen. That means a return value other than
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* 0 or 1 isn't useful.
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*/
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int
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xf86GetIsaInfoForScreen(int scrnIndex)
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{
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int num = 0;
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int i;
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EntityPtr p;
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for (i = 0; i < xf86Screens[scrnIndex]->numEntities; i++) {
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p = xf86Entities[xf86Screens[scrnIndex]->entityList[i]];
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if (p->busType == BUS_ISA) {
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num++;
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}
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}
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return num;
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}
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/*
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* Parse a BUS ID string, and return True if it is a ISA bus id.
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*/
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Bool
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xf86ParseIsaBusString(const char *busID)
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{
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/*
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* The format assumed to be "isa" or "isa:"
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*/
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return (StringToBusType(busID,NULL) == BUS_ISA);
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}
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/*
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* xf86IsPrimaryIsa() -- return TRUE if primary device
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* is ISA.
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*/
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Bool
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xf86IsPrimaryIsa(void)
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{
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return ( primaryBus.type == BUS_ISA );
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}
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void
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isaConvertRange2Host(resRange *pRange)
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{
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return;
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}
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