osfmk/arm64/monotonic.h

   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
  54 static inline bool
  55 mt_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
  65 void mt_fiq(void *cpu, uint64_t pmsr, uint64_t upmsr);
  66
  67 #endif /* MACH_KERNEL_PRIVATE */
  68
  69 #endif /* !defined(ARM64_MONOTONIC_H) */