X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/0c530ab8987f0ae6a1a3d9284f40182b88852816..ebb1b9f42b62218f29061826217bb0f71cd375a6:/iokit/Kernel/IOMultiMemoryDescriptor.cpp diff --git a/iokit/Kernel/IOMultiMemoryDescriptor.cpp b/iokit/Kernel/IOMultiMemoryDescriptor.cpp index 257a3aadb..262680dc8 100644 --- a/iokit/Kernel/IOMultiMemoryDescriptor.cpp +++ b/iokit/Kernel/IOMultiMemoryDescriptor.cpp @@ -1,23 +1,29 @@ /* * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * - * The contents of this file constitute Original Code as defined in and - * are subject to the Apple Public Source License Version 1.1 (the - * "License"). You may not use this file except in compliance with the - * License. Please obtain a copy of the License at - * http://www.apple.com/publicsource and read it before using this file. + * 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. 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. * - * This Original Code and all software distributed under the License are - * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * 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 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the - * License for the specific language governing rights and limitations - * under the License. + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * 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 @@ -26,63 +32,6 @@ #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, @@ -112,8 +61,6 @@ IOMultiMemoryDescriptor * IOMultiMemoryDescriptor::withDescriptors( return me; } -// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - bool IOMultiMemoryDescriptor::initWithDescriptors( IOMemoryDescriptor ** descriptors, UInt32 withCount, @@ -149,7 +96,10 @@ bool IOMultiMemoryDescriptor::initWithDescriptors( _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; @@ -179,8 +129,6 @@ bool IOMultiMemoryDescriptor::initWithDescriptors( return true; } -// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - void IOMultiMemoryDescriptor::free() { // @@ -199,8 +147,6 @@ void IOMultiMemoryDescriptor::free() super::free(); } -// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - IOReturn IOMultiMemoryDescriptor::prepare(IODirection forDirection) { // @@ -217,7 +163,7 @@ IOReturn IOMultiMemoryDescriptor::prepare(IODirection forDirection) if ( forDirection == kIODirectionNone ) { - forDirection = _direction; + forDirection = getDirection(); } for ( index = 0; index < _descriptorsCount; index++ ) @@ -238,8 +184,6 @@ IOReturn IOMultiMemoryDescriptor::prepare(IODirection forDirection) return status; } -// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - IOReturn IOMultiMemoryDescriptor::complete(IODirection forDirection) { // @@ -255,7 +199,7 @@ IOReturn IOMultiMemoryDescriptor::complete(IODirection forDirection) if ( forDirection == kIODirectionNone ) { - forDirection = _direction; + forDirection = getDirection(); } for ( unsigned index = 0; index < _descriptorsCount; index++ ) @@ -268,65 +212,10 @@ IOReturn IOMultiMemoryDescriptor::complete(IODirection forDirection) return statusFinal; } -// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -addr64_t IOMultiMemoryDescriptor::getPhysicalSegment64( - 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]->getPhysicalSegment64(offset, length); - } - offset -= _descriptors[index]->getLength(); - } - - if ( length ) *length = 0; - - return 0; -} - -// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -IOPhysicalAddress IOMultiMemoryDescriptor::getPhysicalSegment( - 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]->getPhysicalSegment(offset, length); - } - offset -= _descriptors[index]->getLength(); - } - - if ( length ) *length = 0; - - return 0; -} - -// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -IOPhysicalAddress IOMultiMemoryDescriptor::getSourceSegment( +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 @@ -340,7 +229,7 @@ IOPhysicalAddress IOMultiMemoryDescriptor::getSourceSegment( { if ( offset < _descriptors[index]->getLength() ) { - return _descriptors[index]->getSourceSegment(offset, length); + return _descriptors[index]->getPhysicalSegment(offset, length, options); } offset -= _descriptors[index]->getLength(); } @@ -349,83 +238,3 @@ IOPhysicalAddress IOMultiMemoryDescriptor::getSourceSegment( 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; -}