projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 6601e61a | 1 | /* |
| 2d21ac55 | 2 | * Copyright (c) 2004-2007 Apple Inc. All rights reserved. |
| 6601e61a | 3 | * |
| 2d21ac55 | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| 6601e61a | 5 | * |
| 2d21ac55 A |
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. | |
| 6601e61a | 14 | * |
| 2d21ac55 A |
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 | |
| 6601e61a A |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 2d21ac55 A |
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. | |
| 6601e61a | 25 | * |
| 2d21ac55 | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| 6601e61a A |
27 | */ |
| 28 | /* | |
| 29 | * @OSF_COPYRIGHT@ | |
| 30 | */ | |
| 0c530ab8 A |
31 | /* |
| 32 | * @APPLE_FREE_COPYRIGHT@ | |
| 33 | */ | |
| 34 | /* | |
| 35 | * File: tsc.h | |
| 36 | * Purpose: Contains the TSC initialization and conversion | |
| 37 | * factors. | |
| 38 | */ | |
| 39 | #ifdef KERNEL_PRIVATE | |
| 40 | #ifndef _I386_TSC_H_ | |
| 41 | #define _I386_TSC_H_ | |
| 42 | ||
| b0d623f7 | 43 | #define BASE_NHM_CLOCK_SOURCE 133333333ULL |
| 593a1d5f | 44 | #define IA32_PERF_STS 0x198 |
| 6d2010ae | 45 | #define SLOW_TSC_THRESHOLD 1000067800 /* TSC is too slow for regular nanotime() algorithm */ |
| 0c530ab8 | 46 | |
| 6d2010ae | 47 | #ifndef ASSEMBLER |
| 0c530ab8 A |
48 | extern uint64_t busFCvtt2n; |
| 49 | extern uint64_t busFCvtn2t; | |
| 50 | extern uint64_t tscFreq; | |
| 51 | extern uint64_t tscFCvtt2n; | |
| 52 | extern uint64_t tscFCvtn2t; | |
| 53 | extern uint64_t tscGranularity; | |
| 54 | extern uint64_t bus2tsc; | |
| 2d21ac55 | 55 | extern uint64_t busFreq; |
| 593a1d5f A |
56 | extern uint32_t flex_ratio; |
| 57 | extern uint32_t flex_ratio_min; | |
| 58 | extern uint32_t flex_ratio_max; | |
| 0c530ab8 A |
59 | |
| 60 | struct tscInfo | |
| 61 | { | |
| 593a1d5f A |
62 | uint64_t busFCvtt2n; |
| 63 | uint64_t busFCvtn2t; | |
| 64 | uint64_t tscFreq; | |
| 65 | uint64_t tscFCvtt2n; | |
| 66 | uint64_t tscFCvtn2t; | |
| 67 | uint64_t tscGranularity; | |
| 68 | uint64_t bus2tsc; | |
| 69 | uint64_t busFreq; | |
| 70 | uint32_t flex_ratio; | |
| 71 | uint32_t flex_ratio_min; | |
| 72 | uint32_t flex_ratio_max; | |
| 0c530ab8 A |
73 | }; |
| 74 | typedef struct tscInfo tscInfo_t; | |
| 75 | ||
| 76 | extern void tsc_get_info(tscInfo_t *info); | |
| 6601e61a | 77 | |
| 0c530ab8 | 78 | extern void tsc_init(void); |
| 6d2010ae | 79 | #endif /* ASSEMBLER */ |
| 0c530ab8 A |
80 | #endif /* _I386_TSC_H_ */ |
| 81 | #endif /* KERNEL_PRIVATE */ |