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Annotation of XNU/iokit/Drivers/platform/drvAppleNVRAM/AppleNVRAM.h, revision 1.1.1.1

1.1       root        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:  * 16 Feb 1999 suurballe  Created.
                     24:  */
                     25: 
                     26: #include <IOKit/nvram/IONVRAMController.h>
                     27: 
                     28: enum {
                     29:         NVRAM_IOMEM,
                     30:         NVRAM_PORT,
                     31:         NVRAM_PMU,
                     32:         NVRAM_NONE
                     33: };
                     34: 
                     35: class AppleNVRAM : public IONVRAMController
                     36: {
                     37:     OSDeclareDefaultStructors(AppleNVRAM)
                     38: 
                     39: private:
                     40: 
                     41:     int nvram_kind;
                     42:     volatile unsigned char *nvram_data;
                     43:     volatile unsigned char *nvram_port;
                     44: 
                     45: public:
                     46: 
                     47:     bool start ( IOService * );
                     48:     IOReturn openNVRAM ( void );
                     49:     IOReturn readNVRAM ( UInt32 Offset, IOByteCount * Length, UInt8 * Buffer );
                     50:     IOReturn writeNVRAM ( UInt32 Offset, IOByteCount * Length, UInt8 * Buffer );
                     51: };

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