FreeBSD/Linux Kernel Cross Reference
sys/iokit/Kernel/IOKitKernelInternal.h

     /*
      * Copyright (c) 1998-2000 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@
     */
    
    
    #ifndef _IOKIT_KERNELINTERNAL_H
    #define _IOKIT_KERNELINTERNAL_H
    
    #include <sys/cdefs.h>
    
    __BEGIN_DECLS
    
    #include <vm/pmap.h>
    #include <mach/memory_object_types.h>
    #include <device/device_port.h>
    
    typedef kern_return_t (*IOIteratePageableMapsCallback)(vm_map_t map, void * ref);
    
    void IOLibInit(void);
    kern_return_t IOIteratePageableMaps(vm_size_t size,
                        IOIteratePageableMapsCallback callback, void * ref);
    vm_map_t IOPageableMapForAddress(vm_address_t address);
    
    kern_return_t 
    IOMemoryDescriptorMapMemEntry(vm_map_t map, ipc_port_t entry, IOOptionBits options, bool pageable,
                                    mach_vm_size_t offset, mach_vm_address_t * address, mach_vm_size_t length);
    
    SInt32 OSKernelStackRemaining( void );
    
    mach_vm_address_t
    IOKernelAllocateContiguous(mach_vm_size_t size, mach_vm_size_t alignment);
    void
    IOKernelFreeContiguous(mach_vm_address_t address, mach_vm_size_t size);
    
    extern vm_size_t debug_iomallocpageable_size;
    
    // osfmk/device/iokit_rpc.c
    extern kern_return_t IOMapPages(vm_map_t map, mach_vm_address_t va, mach_vm_address_t pa,
                                     mach_vm_size_t length, unsigned int mapFlags);
    extern kern_return_t IOUnmapPages(vm_map_t map, mach_vm_address_t va, mach_vm_size_t length);
    
    extern kern_return_t IOProtectCacheMode(vm_map_t map, mach_vm_address_t va,
                                            mach_vm_size_t length, unsigned int mapFlags);
    
    extern ppnum_t IOGetLastPageNumber(void);
    
    extern ppnum_t gIOLastPage;
    
    /* Physical to physical copy (ints must be disabled) */
    extern void bcopy_phys(addr64_t from, addr64_t to, int size);
    
    __END_DECLS
    
    // Used for dedicated communications for IODMACommand
    enum  {
        kIOMDWalkSegments         = 0x00000001,
        kIOMDFirstSegment         = 0x00000002 | kIOMDWalkSegments,
        kIOMDGetCharacteristics   = 0x00000004,
        kIOMDLastDMACommandOperation
    };
    struct IOMDDMACharacteristics {
        UInt64 fLength;
        UInt32 fSGCount;
        UInt32 fPages;
        UInt32 fPageAlign;
        ppnum_t fHighestPage;
        IODirection fDirection;
        UInt8 fIsMapped, fIsPrepared;
    };
    struct IOMDDMAWalkSegmentArgs {
        UInt64 fOffset;                     // Input/Output offset
        UInt64 fIOVMAddr, fLength;          // Output variables
        UInt8 fMapped;                      // Input Variable, Require mapped IOVMA
    };
    typedef UInt8 IOMDDMAWalkSegmentState[128];
   
   struct IODMACommandInternal
   {
       IOMDDMAWalkSegmentState fState;
       IOMDDMACharacteristics  fMDSummary;
   
       UInt64 fPreparedOffset;
       UInt64 fPreparedLength;
   
       UInt8  fCursor;
       UInt8  fCheckAddressing;
       UInt8  fIterateOnly;
       UInt8  fMisaligned;
       UInt8  fCopyContig;
       UInt8  fPrepared;
       UInt8  fDoubleBuffer;
       UInt8  __pad[1];
   
       ppnum_t  fCopyPageAlloc;
       ppnum_t  fCopyPageCount;
       ppnum_t  fNextRemapIndex;
       addr64_t fCopyNext;
   
       class IOBufferMemoryDescriptor * fCopyMD;
   
       // IODMAEventSource use
       IOReturn fStatus;
       UInt64   fActualByteCount;
   };
   
   extern "C" struct timeval gIOLastSleepTime;
   extern "C" struct timeval gIOLastWakeTime;
   
   extern "C" void IOKitResetTime( void );
   extern "C" void IOKitInitializeTime( void );
   
   extern "C" OSString * IOCopyLogNameForPID(int pid);
   
   #endif /* ! _IOKIT_KERNELINTERNAL_H */

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