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
41typedef kern_return_t (*IOIteratePageableMapsCallback)(vm_map_t map, void * ref);
42
43void IOLibInit(void);
44kern_return_t IOIteratePageableMaps(vm_size_t size,
45                    IOIteratePageableMapsCallback callback, void * ref);
46vm_map_t IOPageableMapForAddress(vm_address_t address);
47
48kern_return_t
49IOMemoryDescriptorMapMemEntry(vm_map_t map, ipc_port_t entry, IOOptionBits options, bool pageable,
50				mach_vm_size_t offset, mach_vm_address_t * address, mach_vm_size_t length);
51
52SInt32 OSKernelStackRemaining( void );
53
54mach_vm_address_t
55IOKernelAllocateContiguous(mach_vm_size_t size, mach_vm_size_t alignment);
56void
57IOKernelFreeContiguous(mach_vm_address_t address, mach_vm_size_t size);
58
59extern vm_size_t debug_iomallocpageable_size;
60
61// osfmk/device/iokit_rpc.c
62extern kern_return_t IOMapPages(vm_map_t map, mach_vm_address_t va, mach_vm_address_t pa,
63                                 mach_vm_size_t length, unsigned int mapFlags);
64extern kern_return_t IOUnmapPages(vm_map_t map, mach_vm_address_t va, mach_vm_size_t length);
65
66extern kern_return_t IOProtectCacheMode(vm_map_t map, mach_vm_address_t va,
67					mach_vm_size_t length, unsigned int mapFlags);
68
69extern ppnum_t IOGetLastPageNumber(void);
70
71extern ppnum_t gIOLastPage;
72
73/* Physical to physical copy (ints must be disabled) */
74extern void bcopy_phys(addr64_t from, addr64_t to, int size);
75
76__END_DECLS
77
78// Used for dedicated communications for IODMACommand
79enum  {
80    kIOMDWalkSegments         = 0x00000001,
81    kIOMDFirstSegment	      = 0x00000002 | kIOMDWalkSegments,
82    kIOMDGetCharacteristics   = 0x00000004,
83    kIOMDLastDMACommandOperation
84};
85struct IOMDDMACharacteristics {
86    UInt64 fLength;
87    UInt32 fSGCount;
88    UInt32 fPages;
89    UInt32 fPageAlign;
90    ppnum_t fHighestPage;
91    IODirection fDirection;
92    UInt8 fIsMapped, fIsPrepared;
93};
94struct IOMDDMAWalkSegmentArgs {
95    UInt64 fOffset;			// Input/Output offset
96    UInt64 fIOVMAddr, fLength;		// Output variables
97    UInt8 fMapped;			// Input Variable, Require mapped IOVMA
98};
99typedef UInt8 IOMDDMAWalkSegmentState[128];
100
101struct IODMACommandInternal
102{
103    IOMDDMAWalkSegmentState fState;
104    IOMDDMACharacteristics  fMDSummary;
105
106    UInt64 fPreparedOffset;
107    UInt64 fPreparedLength;
108
109    UInt8  fCursor;
110    UInt8  fCheckAddressing;
111    UInt8  fIterateOnly;
112    UInt8  fMisaligned;
113    UInt8  fCopyContig;
114    UInt8  fPrepared;
115    UInt8  fDoubleBuffer;
116    UInt8  fNewMD;
117
118    ppnum_t  fCopyPageAlloc;
119    ppnum_t  fCopyPageCount;
120    ppnum_t  fNextRemapIndex;
121    addr64_t fCopyNext;
122
123    class IOBufferMemoryDescriptor * fCopyMD;
124
125    // IODMAEventSource use
126    IOReturn fStatus;
127    UInt64   fActualByteCount;
128};
129
130extern "C" struct timeval gIOLastSleepTime;
131extern "C" struct timeval gIOLastWakeTime;
132
133extern "C" void IOKitResetTime( void );
134extern "C" void IOKitInitializeTime( void );
135
136extern "C" OSString * IOCopyLogNameForPID(int pid);
137
138#endif /* ! _IOKIT_KERNELINTERNAL_H */
139