+++ /dev/null
-/*
- * Copyright (c) 2006 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. 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
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * 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_OSREFERENCE_LICENSE_HEADER_END@
- */
-// 45678901234567890123456789012345678901234567890123456789012345678901234567890
-
-#include <libkern/OSAtomic.h>
-
-#include <IOKit/IOLocks.h>
-#include <IOKit/IOPlatformExpert.h>
-#include <IOKit/IODeviceTreeSupport.h>
-#include <IOKit/IOMapper.h>
-
-// General constants about all VART/DART style Address Re-Mapping Tables
-#define kMapperPage (4 * 1024)
-#define kTransPerPage (kMapperPage / sizeof(ppnum_t))
-
-#define kMinZoneSize 4 // Minimum Zone size in pages
-#define kMaxNumZones (31 - 14) // 31 bit mapped in 16K super pages
-
-class IOCopyMapper : public IOMapper
-{
- OSDeclareDefaultStructors(IOCopyMapper);
-
-// alias the fTable variable into our mappings table
-#define fMappings ((ActiveDARTEntry *) super::fTable)
-
-private:
-
- UInt32 fFreeLists[kMaxNumZones];
-
- IOLock *fTableLock;
-
- void *fDummyPage;
-
- UInt32 fNumZones;
- UInt32 fMapperRegionSize;
- UInt32 fMapperRegionUsed;
- UInt32 fMapperRegionMaxUsed;
- UInt32 fFreeSleepers;
- ppnum_t fDummyPageNumber;
- ppnum_t fBufferPage;
-
- // Internal functions
-
- void breakUp(unsigned start, unsigned end, unsigned freeInd);
- void invalidateDART(ppnum_t pnum, IOItemCount size);
- void tlbInvalidate(ppnum_t pnum, IOItemCount size);
-
- virtual void free();
-
- virtual bool initHardware(IOService * provider);
-public:
- virtual ppnum_t iovmAlloc(IOItemCount pages);
- virtual void iovmFree(ppnum_t addr, IOItemCount pages);
-
- virtual void iovmInsert(ppnum_t addr, IOItemCount offset, ppnum_t page);
- virtual void iovmInsert(ppnum_t addr, IOItemCount offset,
- ppnum_t *pageList, IOItemCount pageCount);
- virtual void iovmInsert(ppnum_t addr, IOItemCount offset,
- upl_page_info_t *pageList, IOItemCount pageCount);
-
- virtual addr64_t mapAddr(IOPhysicalAddress addr);
-};
-
-extern IOCopyMapper * gIOCopyMapper;