xorg-server-1.4/hw/xfree86/common/xf86isaBus.c

   1 /*
   2  * Copyright (c) 1997-2000 by The XFree86 Project, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Except as contained in this notice, the name of the copyright holder(s)
  23  * and author(s) shall not be used in advertising or otherwise to promote
  24  * the sale, use or other dealings in this Software without prior written
  25  * authorization from the copyright holder(s) and author(s).
  26  */
  27
  28
  29 /*
  30  * This file contains the interfaces to the bus-specific code
  31  */
  32
  33 #ifdef HAVE_XORG_CONFIG_H
  34 #include <xorg-config.h>
  35 #endif
  36
  37 #include <ctype.h>
  38 #include <stdlib.h>
  39 #include <unistd.h>
  40 #include <X11/X.h>
  41 #include "os.h"
  42 #include "xf86.h"
  43 #include "xf86Priv.h"
  44 #include "xf86Resources.h"
  45
  46 #include "xf86Bus.h"
  47
  48 #define XF86_OS_PRIVS
  49 #define NEED_OS_RAC_PROTOS
  50 #include "xf86_OSproc.h"
  51
  52 #include "xf86RAC.h"
  53
  54 Bool isaSlotClaimed = FALSE;
  55
  56 /*
  57  * If the slot requested is already in use, return FALSE.
  58  * Otherwise, claim the slot for the screen requesting it.
  59  */
  60
  61 _X_EXPORT int
  62 xf86ClaimIsaSlot(DriverPtr drvp, int chipset, GDevPtr dev, Bool active)
  63 {
  64     EntityPtr p;
  65     BusAccPtr pbap = xf86BusAccInfo;
  66     int num;
  67
  68     num = xf86AllocateEntity();
  69     p = xf86Entities[num];
  70     p->driver = drvp;
  71     p->chipset = chipset;
  72     p->busType = BUS_ISA;
  73     p->active = active;
  74     p->inUse = FALSE;
  75     xf86AddDevToEntity(num, dev);
  76     p->access = xnfcalloc(1,sizeof(EntityAccessRec));
  77     p->access->fallback = &AccessNULL;
  78     p->access->pAccess = &AccessNULL;
  79     p->busAcc = NULL;
  80     while (pbap) {
  81         if (pbap->type == BUS_ISA)
  82             p->busAcc = pbap;
  83         pbap = pbap->next;
  84     }
  85     isaSlotClaimed = TRUE;
  86     return num;
  87 }
  88
  89 /*
  90  * Get the list of ISA "slots" claimed by a screen
  91  *
  92  * Note: The ISA implementation here assumes that only one ISA "slot" type
  93  * can be claimed by any one screen.  That means a return value other than
  94  * 0 or 1 isn't useful.
  95  */
  96 int
  97 xf86GetIsaInfoForScreen(int scrnIndex)
  98 {
  99     int num = 0;
 100     int i;
 101     EntityPtr p;
 102
 103     for (i = 0; i < xf86Screens[scrnIndex]->numEntities; i++) {
 104         p = xf86Entities[xf86Screens[scrnIndex]->entityList[i]];
 105         if (p->busType == BUS_ISA) {
 106             num++;
 107         }
 108     }
 109     return num;
 110 }
 111
 112 /*
 113  * Parse a BUS ID string, and return True if it is a ISA bus id.
 114  */
 115
 116 _X_EXPORT Bool
 117 xf86ParseIsaBusString(const char *busID)
 118 {
 119     /*
 120      * The format assumed to be "isa" or "isa:"
 121      */
 122     return (StringToBusType(busID,NULL) == BUS_ISA);
 123 }
 124
 125
 126 /*
 127  * xf86IsPrimaryIsa() -- return TRUE if primary device
 128  * is ISA.
 129  */
 130
 131 _X_EXPORT Bool
 132 xf86IsPrimaryIsa(void)
 133 {
 134     return ( primaryBus.type == BUS_ISA );
 135 }
 136
 137 void
 138 isaConvertRange2Host(resRange *pRange)
 139 {
 140     return;
 141 }