| | 1 | /* |
| | 2 | * Copyright (c) 2000-2003 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 | #ifndef _I386_MTRR_H_ |
| | 24 | #define _I386_MTRR_H_ |
| | 25 | |
| | 26 | /* |
| | 27 | * Memory type range register (MTRR) support. |
| | 28 | */ |
| | 29 | |
| | 30 | #include <mach/std_types.h> |
| | 31 | #include <sys/appleapiopts.h> |
| | 32 | #include <sys/cdefs.h> |
| | 33 | |
| | 34 | #ifdef __APPLE_API_PRIVATE |
| | 35 | |
| | 36 | enum { |
| | 37 | MTRR_TYPE_UNCACHEABLE = 0, |
| | 38 | MTRR_TYPE_WRITECOMBINE = 1, |
| | 39 | MTRR_TYPE_WRITETHROUGH = 4, |
| | 40 | MTRR_TYPE_WRITEPROTECT = 5, |
| | 41 | MTRR_TYPE_WRITEBACK = 6 |
| | 42 | }; |
| | 43 | |
| | 44 | __BEGIN_DECLS |
| | 45 | |
| | 46 | extern void mtrr_init(void); |
| | 47 | extern kern_return_t mtrr_update_cpu(void); |
| | 48 | extern kern_return_t mtrr_update_all_cpus(void); |
| | 49 | |
| | 50 | extern kern_return_t mtrr_range_add( addr64_t phys_addr, |
| | 51 | uint64_t length, |
| | 52 | uint32_t mem_type); |
| | 53 | |
| | 54 | extern kern_return_t mtrr_range_remove( addr64_t phys_addr, |
| | 55 | uint64_t length, |
| | 56 | uint32_t mem_type); |
| | 57 | |
| | 58 | extern void pat_init(void); |
| | 59 | |
| | 60 | __END_DECLS |
| | 61 | |
| | 62 | #endif /* __APPLE_API_PRIVATE */ |
| | 63 | |
| | 64 | #endif /* !_I386_MTRR_H_ */ |
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