iokit/Kernel/IOKitKernelInternal.h

   1 /*
   2  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_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
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30
  31
  32 #ifndef _IOKIT_KERNELINTERNAL_H
  33 #define _IOKIT_KERNELINTERNAL_H
  34
  35 #include <sys/cdefs.h>
  36
  37 __BEGIN_DECLS
  38
  39 #include <vm/pmap.h>
  40 #include <mach/memory_object_types.h>
  41 #include <device/device_port.h>
  42
  43 typedef kern_return_t (*IOIteratePageableMapsCallback)(vm_map_t map, void * ref);
  44
  45 void IOLibInit(void);
  46 kern_return_t IOIteratePageableMaps(vm_size_t size,
  47                     IOIteratePageableMapsCallback callback, void * ref);
  48 vm_map_t IOPageableMapForAddress( vm_address_t address );
  49 SInt32 OSKernelStackRemaining( void );
  50
  51 mach_vm_address_t
  52 IOKernelAllocateContiguous(mach_vm_size_t size, mach_vm_size_t alignment);
  53 void
  54 IOKernelFreeContiguous(mach_vm_address_t address, mach_vm_size_t size);
  55
  56 extern vm_size_t debug_iomallocpageable_size;
  57
  58 // osfmk/device/iokit_rpc.c
  59 // LP64todo - these need to expand
  60 extern kern_return_t IOMapPages(vm_map_t map, mach_vm_address_t va, mach_vm_address_t pa,
  61                         mach_vm_size_t length, unsigned int options);
  62 extern kern_return_t IOUnmapPages(vm_map_t map, mach_vm_address_t va, mach_vm_size_t length);
  63
  64 extern kern_return_t IOProtectCacheMode(vm_map_t map, mach_vm_address_t va,
  65                                         mach_vm_size_t length, unsigned int mapFlags);
  66
  67 extern ppnum_t IOGetLastPageNumber(void);
  68
  69 extern ppnum_t gIOLastPage;
  70
  71 /* Physical to physical copy (ints must be disabled) */
  72 extern void bcopy_phys(addr64_t from, addr64_t to, int size);
  73
  74 __END_DECLS
  75
  76 // Used for dedicated communications for IODMACommand
  77 enum  {
  78     kIOMDWalkSegments         = 0x00000001,
  79     kIOMDFirstSegment         = 0x00000002 | kIOMDWalkSegments,
  80     kIOMDGetCharacteristics   = 0x00000004,
  81     kIOMDLastDMACommandOperation
  82 };
  83 struct IOMDDMACharacteristics {
  84     UInt64 fLength;
  85     UInt32 fSGCount;
  86     UInt32 fPages;
  87     UInt32 fPageAlign;
  88     ppnum_t fHighestPage;
  89     IODirection fDirection;
  90     UInt8 fIsMapped, fIsPrepared;
  91 };
  92 struct IOMDDMAWalkSegmentArgs {
  93     UInt64 fOffset;                     // Input/Output offset
  94     UInt64 fIOVMAddr, fLength;          // Output variables
  95     UInt8 fMapped;                      // Input Variable, Require mapped IOVMA
  96 };
  97 typedef UInt8 IOMDDMAWalkSegmentState[128];
  98
  99 #endif /* ! _IOKIT_KERNELINTERNAL_H */