1/*
2 * Copyright (c) 2017 Apple 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#ifndef ARM64_MONOTONIC_H
29#define ARM64_MONOTONIC_H
30
31#include <pexpert/arm64/board_config.h>
32
33#if KERNEL_PRIVATE
34
35#include <stdint.h>
36
37#define MT_NDEVS 1
38
39#define MT_CORE_CYCLES 0
40#define MT_CORE_INSTRS 1
41#define MT_CORE_NFIXED 2
42#define MT_CORE_MAXVAL ((UINT64_C(1) << 48) - 1)
43
44#endif /* KERNEL_PRIVATE */
45
46#if MACH_KERNEL_PRIVATE
47
48#include <stdbool.h>
49
50#define PMSR "s3_1_c15_c13_0"
51#define PMSR_PMI(REG) ((REG) & ((1 << CORE_NCTRS) - 1))
52
53
54static inline bool
55mt_pmi_pending(uint64_t * restrict pmsr, uint64_t * restrict upmsr)
56{
57 *pmsr = __builtin_arm_rsr64(PMSR);
58 bool pmi = PMSR_PMI(*pmsr);
59
60#pragma unused(upmsr)
61
62 return pmi;
63}
64
65void mt_fiq(void *cpu, uint64_t pmsr, uint64_t upmsr);
66
67#endif /* MACH_KERNEL_PRIVATE */
68
69#endif /* !defined(ARM64_MONOTONIC_H) */
70