/*
* Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* Please see the License for the specific language governing rights and
* limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#include <IOKit/IOLib.h>
#define super IOMemoryDescriptor
OSDefineMetaClassAndStructors(IOMultiMemoryDescriptor, IOMemoryDescriptor)
-// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-
-bool IOMultiMemoryDescriptor::initWithAddress(
- void * /* address */ ,
- IOByteCount /* withLength */ ,
- IODirection /* withDirection */ )
-{
- return false;
-}
-
-// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-
-bool IOMultiMemoryDescriptor::initWithAddress(
- vm_address_t /* address */ ,
- IOByteCount /* withLength */ ,
- IODirection /* withDirection */ ,
- task_t /* withTask */ )
-{
- return false;
-}
-
-// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-
-bool IOMultiMemoryDescriptor::initWithPhysicalAddress(
- IOPhysicalAddress /* address */ ,
- IOByteCount /* withLength */ ,
- IODirection /* withDirection */ )
-{
- return false;
-}
-
-
-// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-
-bool IOMultiMemoryDescriptor::initWithPhysicalRanges(
- IOPhysicalRange * /* ranges */ ,
- UInt32 /* withCount */ ,
- IODirection /* withDirection */ ,
- bool /* asReference */ )
-{
- return false;
-}
-
-// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-
-bool IOMultiMemoryDescriptor::initWithRanges(
- IOVirtualRange * /* ranges */ ,
- UInt32 /* withCount */ ,
- IODirection /* withDirection */ ,
- task_t /* withTask */ ,
- bool /* asReference */ )
-{
- return false;
-}
-
-// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-
IOMultiMemoryDescriptor * IOMultiMemoryDescriptor::withDescriptors(
IOMemoryDescriptor ** descriptors,
UInt32 withCount,
IODirection withDirection,
- bool asReference = false )
+ bool asReference )
{
//
// Create a new IOMultiMemoryDescriptor. The "buffer" is made up of several
return me;
}
-// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-
bool IOMultiMemoryDescriptor::initWithDescriptors(
IOMemoryDescriptor ** descriptors,
UInt32 withCount,
IODirection withDirection,
- bool asReference = false )
+ bool asReference )
{
//
// Initialize an IOMultiMemoryDescriptor. The "buffer" is made up of several
assert(descriptors);
assert(withCount);
- // Ask our superclass' opinion.
-
- if ( super::init() == false ) return false;
+ // Release existing descriptors, if any
+ if ( _descriptors )
+ {
+ for ( unsigned index = 0; index < _descriptorsCount; index++ )
+ _descriptors[index]->release();
+ if ( _descriptorsIsAllocated )
+ IODelete(_descriptors, IOMemoryDescriptor *, _descriptorsCount);
+ } else {
+ // Ask our superclass' opinion.
+ if ( super::init() == false ) return false;
+ }
+
// Initialize our minimal state.
_descriptors = 0;
_descriptorsCount = withCount;
_descriptorsIsAllocated = asReference ? false : true;
- _direction = withDirection;
+ _flags = withDirection;
+#ifndef __LP64__
+ _direction = (IODirection) (_flags & kIOMemoryDirectionMask);
+#endif /* !__LP64__ */
_length = 0;
_mappings = 0;
_tag = 0;
return true;
}
-// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-
void IOMultiMemoryDescriptor::free()
{
//
super::free();
}
-// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-
IOReturn IOMultiMemoryDescriptor::prepare(IODirection forDirection)
{
//
if ( forDirection == kIODirectionNone )
{
- forDirection = _direction;
+ forDirection = getDirection();
}
for ( index = 0; index < _descriptorsCount; index++ )
return status;
}
-// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-
IOReturn IOMultiMemoryDescriptor::complete(IODirection forDirection)
{
//
if ( forDirection == kIODirectionNone )
{
- forDirection = _direction;
+ forDirection = getDirection();
}
for ( unsigned index = 0; index < _descriptorsCount; index++ )
return statusFinal;
}
-// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-
-IOPhysicalAddress IOMultiMemoryDescriptor::getPhysicalSegment(
+addr64_t IOMultiMemoryDescriptor::getPhysicalSegment(
IOByteCount offset,
- IOByteCount * length )
+ IOByteCount * length,
+ IOOptionBits options )
{
//
// This method returns the physical address of the byte at the given offset
{
if ( offset < _descriptors[index]->getLength() )
{
- return _descriptors[index]->getPhysicalSegment(offset, length);
+ return _descriptors[index]->getPhysicalSegment(offset, length, options);
}
offset -= _descriptors[index]->getLength();
}
return 0;
}
-
-// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-
-IOPhysicalAddress IOMultiMemoryDescriptor::getSourceSegment(
- IOByteCount offset,
- IOByteCount * length )
-{
- //
- // This method returns the physical address of the byte at the given offset
- // into the memory, and optionally the length of the physically contiguous
- // segment from that offset.
- //
-
- assert(offset <= _length);
-
- for ( unsigned index = 0; index < _descriptorsCount; index++ )
- {
- if ( offset < _descriptors[index]->getLength() )
- {
- return _descriptors[index]->getSourceSegment(offset, length);
- }
- offset -= _descriptors[index]->getLength();
- }
-
- if ( length ) *length = 0;
-
- return 0;
-}
-
-// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-
-void * IOMultiMemoryDescriptor::getVirtualSegment( IOByteCount /* offset */ ,
- IOByteCount * /* length */ )
-{
- return 0;
-}
-
-// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-
-IOByteCount IOMultiMemoryDescriptor::readBytes( IOByteCount offset,
- void * bytes,
- IOByteCount withLength )
-{
- //
- // Copies data from the memory descriptor's buffer at the given offset, to
- // the specified buffer. Returns the number of bytes copied.
- //
-
- IOByteCount bytesCopied = 0;
- unsigned index;
-
- for ( index = 0; index < _descriptorsCount; index++ )
- {
- if ( offset < _descriptors[index]->getLength() ) break;
- offset -= _descriptors[index]->getLength();
- }
-
- for ( ; index < _descriptorsCount && withLength; index++)
- {
- IOByteCount copy = min(_descriptors[index]->getLength(), withLength);
- IOByteCount copied = _descriptors[index]->readBytes(offset,bytes,copy);
-
- bytesCopied += copied;
- if ( copied != copy ) break;
-
- bytes = ((UInt8 *) bytes) + copied;
- withLength -= copied;
- offset = 0;
- }
-
- return bytesCopied;
-}
-
-// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-
-IOByteCount IOMultiMemoryDescriptor::writeBytes( IOByteCount offset,
- const void * bytes,
- IOByteCount withLength )
-{
- //
- // Copies data to the memory descriptor's buffer at the given offset, from
- // the specified buffer. Returns the number of bytes copied.
- //
-
- IOByteCount bytesCopied = 0;
- unsigned index;
-
- for ( index = 0; index < _descriptorsCount; index++ )
- {
- if ( offset < _descriptors[index]->getLength() ) break;
- offset -= _descriptors[index]->getLength();
- }
-
- for ( ; index < _descriptorsCount && withLength; index++)
- {
- IOByteCount copy = min(_descriptors[index]->getLength(), withLength);
- IOByteCount copied = _descriptors[index]->writeBytes(offset,bytes,copy);
-
- bytesCopied += copied;
- if ( copied != copy ) break;
-
- bytes = ((UInt8 *) bytes) + copied;
- withLength -= copied;
- offset = 0;
- }
-
- return bytesCopied;
-}
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