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Annotation of XNU/iokit/Kernel/IODeviceMemory.cpp, revision 1.1.1.1

1.1       root        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.
                     27:  * 30 Sep 99 sdouglas, merged IODeviceMemory into IOMemoryDescriptor.
                     28:  */
                     29: 
                     30: #include <IOKit/IODeviceMemory.h>
                     31: 
                     32: /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
                     33: 
                     34: IODeviceMemory * IODeviceMemory::withRange( 
                     35:        IOPhysicalAddress       start,
                     36:        IOPhysicalLength        length )
                     37: {
                     38:     return( (IODeviceMemory *) IOMemoryDescriptor::withPhysicalAddress(
                     39:                        start, length, kIODirectionNone ));
                     40: }
                     41: 
                     42: 
                     43: IODeviceMemory * IODeviceMemory::withSubRange( 
                     44:        IODeviceMemory *        of,
                     45:        IOPhysicalAddress       offset,
                     46:        IOPhysicalLength        length )
                     47: {
                     48:     return( (IODeviceMemory *) IOMemoryDescriptor::withSubRange(
                     49:                of, offset, length, kIODirectionNone ));
                     50: }
                     51: 
                     52: 
                     53: OSArray * IODeviceMemory::arrayFromList(
                     54:        InitElement             list[],
                     55:        IOItemCount             count )
                     56: {
                     57:     OSArray *          array;
                     58:     IODeviceMemory *   range;
                     59:     IOItemCount                i;
                     60: 
                     61:     array = OSArray::withCapacity( count );
                     62:     if( 0 == array )
                     63:        return( 0);
                     64: 
                     65:     for( i = 0; i < count; i++) {
                     66:        range = IODeviceMemory::withRange( list[i].start, list[i].length );
                     67:        if( range) {
                     68:            range->setTag( list[i].tag );
                     69:            array->setObject( range);
                     70:            range->release();
                     71:        } else {
                     72:            array->release();
                     73:            array = 0;
                     74:            break;
                     75:        }
                     76:     }
                     77: 
                     78:     return( array );
                     79: }
                     80: 

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