iokit/Kernel/IOKitKernelInternal.h

   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
  24 #ifndef _IOKIT_KERNELINTERNAL_H
  25 #define _IOKIT_KERNELINTERNAL_H
  26
  27 #include <sys/cdefs.h>
  28
  29 __BEGIN_DECLS
  30
  31 #include <vm/pmap.h>
  32 #include <mach/memory_object_types.h>
  33 #include <device/device_port.h>
  34
  35 typedef kern_return_t (*IOIteratePageableMapsCallback)(vm_map_t map, void * ref);
  36
  37 void IOLibInit(void);
  38 kern_return_t IOIteratePageableMaps(vm_size_t size,
  39                     IOIteratePageableMapsCallback callback, void * ref);
  40 vm_map_t IOPageableMapForAddress( vm_address_t address );
  41 SInt32 OSKernelStackRemaining( void );
  42
  43 mach_vm_address_t
  44 IOKernelAllocateContiguous(mach_vm_size_t size, mach_vm_size_t alignment);
  45 void
  46 IOKernelFreeContiguous(mach_vm_address_t address, mach_vm_size_t size);
  47
  48 extern vm_size_t debug_iomallocpageable_size;
  49
  50 // osfmk/device/iokit_rpc.c
  51 // LP64todo - these need to expand
  52 extern kern_return_t IOMapPages(vm_map_t map, mach_vm_address_t va, mach_vm_address_t pa,
  53                         mach_vm_size_t length, unsigned int options);
  54 extern kern_return_t IOUnmapPages(vm_map_t map, mach_vm_address_t va, mach_vm_size_t length);
  55
  56 extern kern_return_t IOProtectCacheMode(vm_map_t map, mach_vm_address_t va,
  57                                         mach_vm_size_t length, unsigned int mapFlags);
  58
  59 extern ppnum_t IOGetLastPageNumber(void);
  60
  61 extern ppnum_t gIOLastPage;
  62
  63 /* Physical to physical copy (ints must be disabled) */
  64 extern void bcopy_phys(addr64_t from, addr64_t to, int size);
  65
  66 __END_DECLS
  67
  68 // Used for dedicated communications for IODMACommand
  69 enum  {
  70     kIOMDWalkSegments         = 0x00000001,
  71     kIOMDFirstSegment         = 0x00000002 | kIOMDWalkSegments,
  72     kIOMDGetCharacteristics   = 0x00000004,
  73     kIOMDLastDMACommandOperation
  74 };
  75 struct IOMDDMACharacteristics {
  76     UInt64 fLength;
  77     UInt32 fSGCount;
  78     UInt32 fPages;
  79     UInt32 fPageAlign;
  80     ppnum_t fHighestPage;
  81     IODirection fDirection;
  82     UInt8 fIsMapped, fIsPrepared;
  83 };
  84 struct IOMDDMAWalkSegmentArgs {
  85     UInt64 fOffset;                     // Input/Output offset
  86     UInt64 fIOVMAddr, fLength;          // Output variables
  87     UInt8 fMapped;                      // Input Variable, Require mapped IOVMA
  88 };
  89 typedef UInt8 IOMDDMAWalkSegmentState[128];
  90
  91 #endif /* ! _IOKIT_KERNELINTERNAL_H */