iokit/Kernel/IOKitKernelInternal.h

   1 /*
   2  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28
  29
  30 #ifndef _IOKIT_KERNELINTERNAL_H
  31 #define _IOKIT_KERNELINTERNAL_H
  32
  33 #include <sys/cdefs.h>
  34
  35 __BEGIN_DECLS
  36
  37 #include <vm/pmap.h>
  38 #include <mach/memory_object_types.h>
  39 #include <device/device_port.h>
  40
  41 typedef kern_return_t (*IOIteratePageableMapsCallback)(vm_map_t map, void * ref);
  42
  43 void IOLibInit(void);
  44 kern_return_t IOIteratePageableMaps(vm_size_t size,
  45                     IOIteratePageableMapsCallback callback, void * ref);
  46 vm_map_t IOPageableMapForAddress( vm_address_t address );
  47 SInt32 OSKernelStackRemaining( void );
  48
  49 mach_vm_address_t
  50 IOKernelAllocateContiguous(mach_vm_size_t size, mach_vm_size_t alignment);
  51 void
  52 IOKernelFreeContiguous(mach_vm_address_t address, mach_vm_size_t size);
  53
  54 extern vm_size_t debug_iomallocpageable_size;
  55
  56 // osfmk/device/iokit_rpc.c
  57 // LP64todo - these need to expand
  58 extern kern_return_t IOMapPages(vm_map_t map, mach_vm_address_t va, mach_vm_address_t pa,
  59                         mach_vm_size_t length, unsigned int options);
  60 extern kern_return_t IOUnmapPages(vm_map_t map, mach_vm_address_t va, mach_vm_size_t length);
  61
  62 extern kern_return_t IOProtectCacheMode(vm_map_t map, mach_vm_address_t va,
  63                                         mach_vm_size_t length, unsigned int mapFlags);
  64
  65 extern ppnum_t IOGetLastPageNumber(void);
  66
  67 extern ppnum_t gIOLastPage;
  68
  69 /* Physical to physical copy (ints must be disabled) */
  70 extern void bcopy_phys(addr64_t from, addr64_t to, int size);
  71
  72 __END_DECLS
  73
  74 // Used for dedicated communications for IODMACommand
  75 enum  {
  76     kIOMDWalkSegments         = 0x00000001,
  77     kIOMDFirstSegment         = 0x00000002 | kIOMDWalkSegments,
  78     kIOMDGetCharacteristics   = 0x00000004,
  79     kIOMDLastDMACommandOperation
  80 };
  81 struct IOMDDMACharacteristics {
  82     UInt64 fLength;
  83     UInt32 fSGCount;
  84     UInt32 fPages;
  85     UInt32 fPageAlign;
  86     ppnum_t fHighestPage;
  87     IODirection fDirection;
  88     UInt8 fIsMapped, fIsPrepared;
  89 };
  90 struct IOMDDMAWalkSegmentArgs {
  91     UInt64 fOffset;                     // Input/Output offset
  92     UInt64 fIOVMAddr, fLength;          // Output variables
  93     UInt8 fMapped;                      // Input Variable, Require mapped IOVMA
  94 };
  95 typedef UInt8 IOMDDMAWalkSegmentState[128];
  96
  97 #endif /* ! _IOKIT_KERNELINTERNAL_H */