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[apple/xnu.git] / iokit / IOKit / IONVRAM.h
diff --git a/iokit/IOKit/IONVRAM.h b/iokit/IOKit/IONVRAM.h
index b83e7840054d2ea5ee6841730a56f1f59dd96bf1..ef2e533e8ba6c9a02beba7a3c2e17da9b5c1c0eb 100644 (file)
--- a/iokit/IOKit/IONVRAM.h
+++ b/iokit/IOKit/IONVRAM.h
@@ -1,168 +1,188 @@
 /*
 /*
- * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1998-2006 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2007-2012 Apple Inc. All rights reserved.
  *
  *
- * @APPLE_LICENSE_OSREFERENCE_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.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  *
  *
- * Please obtain a copy of the License at 
- * http://www.opensource.apple.com/apsl/ and read it before using this 
- * file.
+ * 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.
  *
  *
- * 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 
+ * 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.
  *
  * limitations under the License.
  *
- * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 
 #ifndef _IOKIT_IONVRAM_H
 #define _IOKIT_IONVRAM_H
 
  */
 
 #ifndef _IOKIT_IONVRAM_H
 #define _IOKIT_IONVRAM_H
 
+#ifdef __cplusplus
 #include <IOKit/IOKitKeys.h>
 #include <IOKit/IOService.h>
 #include <IOKit/IODeviceTreeSupport.h>
 #include <IOKit/nvram/IONVRAMController.h>
 #include <IOKit/IOKitKeys.h>
 #include <IOKit/IOService.h>
 #include <IOKit/IODeviceTreeSupport.h>
 #include <IOKit/nvram/IONVRAMController.h>
-
+#endif /* __cplusplus */
 
 #define kIODTNVRAMOFPartitionName       "common"
 #define kIODTNVRAMXPRAMPartitionName    "APL,MacOS75"
 #define kIODTNVRAMPanicInfoPartitonName "APL,OSXPanic"
 #define kIODTNVRAMFreePartitionName     "wwwwwwwwwwww"
 
 
 #define kIODTNVRAMOFPartitionName       "common"
 #define kIODTNVRAMXPRAMPartitionName    "APL,MacOS75"
 #define kIODTNVRAMPanicInfoPartitonName "APL,OSXPanic"
 #define kIODTNVRAMFreePartitionName     "wwwwwwwwwwww"
 
+#define MIN_SYNC_NOW_INTERVAL 15*60 /* Minimum 15 Minutes interval mandated */
+
 enum {
 enum {
-  kIODTNVRAMImageSize        = 0x2000,
-  kIODTNVRAMXPRAMSize        = 0x0100,
-  kIODTNVRAMNameRegistrySize = 0x0400
+       kIODTNVRAMImageSize        = 0x2000,
+       kIODTNVRAMXPRAMSize        = 0x0100,
+       kIODTNVRAMNameRegistrySize = 0x0400
 };
 
 enum {
 };
 
 enum {
-  kOFVariableTypeBoolean = 1,
-  kOFVariableTypeNumber,
-  kOFVariableTypeString,
-  kOFVariableTypeData
+       kOFVariableTypeBoolean = 1,
+       kOFVariableTypeNumber,
+       kOFVariableTypeString,
+       kOFVariableTypeData
 };
 
 enum {
 };
 
 enum {
-  kOFVariablePermRootOnly = 0,
-  kOFVariablePermUserRead,
-  kOFVariablePermUserWrite
+       kOFVariablePermRootOnly = 0,
+       kOFVariablePermUserRead,
+       kOFVariablePermUserWrite,
+       kOFVariablePermKernelOnly
 };
 
 };
 
+#ifdef __cplusplus
+
 class IODTNVRAM : public IOService
 {
 class IODTNVRAM : public IOService
 {
-  OSDeclareDefaultStructors(IODTNVRAM);
-  
+       OSDeclareDefaultStructors(IODTNVRAM);
+
 private:
 private:
-  IONVRAMController *_nvramController;
-  const OSSymbol    *_registryPropertiesKey;
-  UInt8             *_nvramImage;
-  bool              _nvramImageDirty;
-  UInt32            _ofPartitionOffset;
-  UInt32            _ofPartitionSize;
-  UInt8             *_ofImage;
-  bool              _ofImageDirty;
-  OSDictionary      *_ofDict;
-  OSDictionary      *_nvramPartitionOffsets;
-  OSDictionary      *_nvramPartitionLengths;
-  UInt32            _xpramPartitionOffset;
-  UInt32            _xpramPartitionSize;
-  UInt8             *_xpramImage;
-  UInt32            _nrPartitionOffset;
-  UInt32            _nrPartitionSize;
-  UInt8             *_nrImage;
-  UInt32            _piPartitionOffset;
-  UInt32            _piPartitionSize;
-  UInt8             *_piImage;
-  bool              _systemPaniced;
-  
-  virtual UInt8 calculatePartitionChecksum(UInt8 *partitionHeader);
-  virtual IOReturn initOFVariables(void);
+       IONVRAMController *_nvramController;
+       const OSSymbol    *_registryPropertiesKey;
+       UInt8             *_nvramImage;
+       __unused bool     _nvramImageDirty;
+       UInt32            _ofPartitionOffset;
+       UInt32            _ofPartitionSize;
+       UInt8             *_ofImage;
+       __unused bool     _ofImageDirty;
+       OSDictionary      *_ofDict;
+       OSDictionary      *_nvramPartitionOffsets;
+       OSDictionary      *_nvramPartitionLengths;
+       UInt32            _resv0 __unused;
+       UInt32            _resv1 __unused;
+       IOLock            *_ofLock;
+       UInt32            _resv2 __unused;
+       UInt32            _resv3 __unused;
+       UInt8             *_resv4 __unused;
+       UInt32            _piPartitionOffset;
+       UInt32            _piPartitionSize;
+       UInt8             *_piImage;
+       bool              _systemPaniced;
+       SInt32            _lastDeviceSync;
+       bool              _freshInterval;
+       bool              _isProxied;
+
+       virtual UInt8 calculatePartitionChecksum(UInt8 *partitionHeader);
+       virtual IOReturn initOFVariables(void);
 public:
 public:
-  virtual IOReturn syncOFVariables(void);
+       virtual IOReturn syncOFVariables(void);
 private:
 private:
-  virtual UInt32 getOFVariableType(const OSSymbol *propSymbol) const;
-  virtual UInt32 getOFVariablePerm(const OSSymbol *propSymbol) const;
-  virtual bool getOWVariableInfo(UInt32 variableNumber, const OSSymbol **propSymbol,
-                                UInt32 *propType, UInt32 *propOffset);
-  virtual bool convertPropToObject(UInt8 *propName, UInt32 propNameLength,
-                                  UInt8 *propData, UInt32 propDataLength,
-                                  const OSSymbol **propSymbol,
-                                  OSObject **propObject);
-  virtual bool convertObjectToProp(UInt8 *buffer, UInt32 *length,
-                                  const OSSymbol *propSymbol, OSObject *propObject);
-  virtual UInt16 generateOWChecksum(UInt8 *buffer);
-  virtual bool validateOWChecksum(UInt8 *buffer);
-  virtual void updateOWBootArgs(const OSSymbol *key, OSObject *value);
-  virtual bool searchNVRAMProperty(struct IONVRAMDescriptor *hdr,
-                                  UInt32 *where);
-  
-  virtual IOReturn readNVRAMPropertyType0(IORegistryEntry *entry,
-                                         const OSSymbol **name,
-                                         OSData **value);
-  virtual IOReturn writeNVRAMPropertyType0(IORegistryEntry *entry,
-                                          const OSSymbol *name,
-                                          OSData * value);
-  
-  virtual OSData *unescapeBytesToData(const UInt8 *bytes, UInt32 length);
-  virtual OSData *escapeDataToData(OSData * value);
-
-  virtual IOReturn readNVRAMPropertyType1(IORegistryEntry *entry,
-                                         const OSSymbol **name,
-                                         OSData **value);
-  virtual IOReturn writeNVRAMPropertyType1(IORegistryEntry *entry,
-                                          const OSSymbol *name,
-                                          OSData *value);
-  
+       virtual UInt32 getOFVariableType(const OSSymbol *propSymbol) const;
+       virtual UInt32 getOFVariablePerm(const OSSymbol *propSymbol) const;
+       virtual bool getOWVariableInfo(UInt32 variableNumber, const OSSymbol **propSymbol,
+           UInt32 *propType, UInt32 *propOffset);
+       virtual bool convertPropToObject(UInt8 *propName, UInt32 propNameLength,
+           UInt8 *propData, UInt32 propDataLength,
+           LIBKERN_RETURNS_RETAINED const OSSymbol **propSymbol,
+           LIBKERN_RETURNS_RETAINED OSObject **propObject);
+       virtual bool convertObjectToProp(UInt8 *buffer, UInt32 *length,
+           const OSSymbol *propSymbol, OSObject *propObject);
+       virtual UInt16 generateOWChecksum(UInt8 *buffer);
+       virtual bool validateOWChecksum(UInt8 *buffer);
+       virtual void updateOWBootArgs(const OSSymbol *key, OSObject *value);
+       virtual bool searchNVRAMProperty(struct IONVRAMDescriptor *hdr,
+           UInt32 *where);
+
+       virtual IOReturn readNVRAMPropertyType0(IORegistryEntry *entry,
+           const OSSymbol **name,
+           OSData **value);
+       virtual IOReturn writeNVRAMPropertyType0(IORegistryEntry *entry,
+           const OSSymbol *name,
+           OSData * value);
+
+       virtual OSData *unescapeBytesToData(const UInt8 *bytes, UInt32 length);
+       virtual OSData *escapeDataToData(OSData * value);
+
+       virtual IOReturn readNVRAMPropertyType1(IORegistryEntry *entry,
+           const OSSymbol **name,
+           OSData **value);
+       virtual IOReturn writeNVRAMPropertyType1(IORegistryEntry *entry,
+           const OSSymbol *name,
+           OSData *value);
+
+       void initNVRAMImage(void);
+       void initProxyData(void);
+       IOReturn syncVariables(void);
+       IOReturn setPropertyInternal(const OSSymbol *aKey, OSObject *anObject);
+
+
 public:
 public:
-  virtual bool init(IORegistryEntry *old, const IORegistryPlane *plane);
-  
-  virtual void registerNVRAMController(IONVRAMController *nvram);
-  
-  virtual void sync(void);
-  
-  virtual bool serializeProperties(OSSerialize *s) const;
-  virtual OSObject *getProperty(const OSSymbol *aKey) const;
-  virtual OSObject *getProperty(const char *aKey) const;
-  virtual bool setProperty(const OSSymbol *aKey, OSObject *anObject);
-  virtual void removeProperty(const OSSymbol *aKey);
-  virtual IOReturn setProperties(OSObject *properties);
-  
-  virtual IOReturn readXPRAM(IOByteCount offset, UInt8 *buffer,
-                            IOByteCount length);
-  virtual IOReturn writeXPRAM(IOByteCount offset, UInt8 *buffer,
-                             IOByteCount length);
-  
-  virtual IOReturn readNVRAMProperty(IORegistryEntry *entry,
-                                    const OSSymbol **name,
-                                    OSData **value);
-  virtual IOReturn writeNVRAMProperty(IORegistryEntry *entry,
-                                     const OSSymbol *name,
-                                     OSData *value);
-  
-  virtual OSDictionary *getNVRAMPartitions(void);
-  
-  virtual IOReturn readNVRAMPartition(const OSSymbol *partitionID,
-                                     IOByteCount offset, UInt8 *buffer,
-                                     IOByteCount length);
-  
-  virtual IOReturn writeNVRAMPartition(const OSSymbol *partitionID,
-                                      IOByteCount offset, UInt8 *buffer,
-                                      IOByteCount length);  
-  
-  virtual IOByteCount savePanicInfo(UInt8 *buffer, IOByteCount length);
+       virtual bool init(IORegistryEntry *old, const IORegistryPlane *plane) APPLE_KEXT_OVERRIDE;
+
+       virtual void registerNVRAMController(IONVRAMController *nvram);
+
+       virtual void sync(void);
+
+       virtual bool serializeProperties(OSSerialize *s) const APPLE_KEXT_OVERRIDE;
+       virtual OSObject *copyProperty(const OSSymbol *aKey) const APPLE_KEXT_OVERRIDE;
+       virtual OSObject *copyProperty(const char *aKey) const APPLE_KEXT_OVERRIDE;
+       virtual OSObject *getProperty(const OSSymbol *aKey) const APPLE_KEXT_OVERRIDE;
+       virtual OSObject *getProperty(const char *aKey) const APPLE_KEXT_OVERRIDE;
+       virtual bool setProperty(const OSSymbol *aKey, OSObject *anObject) APPLE_KEXT_OVERRIDE;
+       virtual void removeProperty(const OSSymbol *aKey) APPLE_KEXT_OVERRIDE;
+       virtual IOReturn setProperties(OSObject *properties) APPLE_KEXT_OVERRIDE;
+
+       virtual IOReturn readXPRAM(IOByteCount offset, UInt8 *buffer,
+           IOByteCount length);
+       virtual IOReturn writeXPRAM(IOByteCount offset, UInt8 *buffer,
+           IOByteCount length);
+
+       virtual IOReturn readNVRAMProperty(IORegistryEntry *entry,
+           const OSSymbol **name,
+           OSData **value);
+       virtual IOReturn writeNVRAMProperty(IORegistryEntry *entry,
+           const OSSymbol *name,
+           OSData *value);
+
+       virtual OSDictionary *getNVRAMPartitions(void);
+
+       virtual IOReturn readNVRAMPartition(const OSSymbol *partitionID,
+           IOByteCount offset, UInt8 *buffer,
+           IOByteCount length);
+
+       virtual IOReturn writeNVRAMPartition(const OSSymbol *partitionID,
+           IOByteCount offset, UInt8 *buffer,
+           IOByteCount length);
+
+       virtual IOByteCount savePanicInfo(UInt8 *buffer, IOByteCount length);
+       virtual bool safeToSync(void);
+       void syncInternal(bool rateLimit);
 };
 
 };
 
+#endif /* __cplusplus */
+
 #endif /* !_IOKIT_IONVRAM_H */
 #endif /* !_IOKIT_IONVRAM_H */
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