iokit/Families/IOPCIBus/IOPCIDevicePPC.cpp

   1 /*
   2  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (c) 1998 Apple Computer, Inc.  All rights reserved.
  24  *
  25  * HISTORY
  26  * 23 Nov 98 sdouglas created from objc version.
  27  */
  28
  29 #include <IOKit/system.h>
  30
  31 #include <IOKit/pci/IOPCIBridge.h>
  32 #include <IOKit/pci/IOPCIDevice.h>
  33
  34 #include <IOKit/IOLib.h>
  35 #include <IOKit/assert.h>
  36
  37 #include <libkern/OSByteOrder.h>
  38 #include <libkern/c++/OSContainers.h>
  39
  40
  41 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  42
  43 UInt32 IOPCIDevice::ioRead32( UInt16 offset, IOMemoryMap * map = 0 )
  44 {
  45     UInt32      value;
  46
  47     if( 0 == map) {
  48         map = ioMap;
  49         if( 0 == map)
  50             return( 0 );
  51     }
  52
  53     value = OSReadSwapInt32( (volatile void *)map->getVirtualAddress(), offset);
  54     eieio();
  55
  56     return( value );
  57 }
  58
  59 UInt16 IOPCIDevice::ioRead16( UInt16 offset, IOMemoryMap * map = 0 )
  60 {
  61     UInt16      value;
  62
  63     if( 0 == map) {
  64         map = ioMap;
  65         if( 0 == map)
  66             return( 0 );
  67     }
  68
  69     value = OSReadSwapInt16( (volatile void *)map->getVirtualAddress(), offset);
  70     eieio();
  71
  72     return( value );
  73 }
  74
  75 UInt8 IOPCIDevice::ioRead8( UInt16 offset, IOMemoryMap * map = 0 )
  76 {
  77     UInt32      value;
  78
  79     if( 0 == map) {
  80         map = ioMap;
  81         if( 0 == map)
  82             return( 0 );
  83     }
  84
  85     value = ((volatile UInt8 *) map->getVirtualAddress())[ offset ];
  86     eieio();
  87
  88     return( value );
  89 }
  90
  91 void IOPCIDevice::ioWrite32( UInt16 offset, UInt32 value,
  92                                 IOMemoryMap * map = 0 )
  93 {
  94     if( 0 == map) {
  95         map = ioMap;
  96         if( 0 == map)
  97             return;
  98     }
  99
 100     OSWriteSwapInt32( (volatile void *)map->getVirtualAddress(), offset, value);
 101     eieio();
 102 }
 103
 104 void IOPCIDevice::ioWrite16( UInt16 offset, UInt16 value,
 105                                 IOMemoryMap * map = 0 )
 106 {
 107     if( 0 == map) {
 108         map = ioMap;
 109         if( 0 == map)
 110             return;
 111     }
 112
 113     OSWriteSwapInt16( (volatile void *)map->getVirtualAddress(), offset, value);
 114     eieio();
 115 }
 116
 117 void IOPCIDevice::ioWrite8( UInt16 offset, UInt8 value,
 118                                 IOMemoryMap * map = 0 )
 119 {
 120     if( 0 == map) {
 121         map = ioMap;
 122         if( 0 == map)
 123             return;
 124     }
 125
 126     ((volatile UInt8 *) map->getVirtualAddress())[ offset ] = value;
 127     eieio();
 128
 129 }
 130