arch/riscv/include/asm/hwprobe.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 /*
   3  * Copyright 2023 Rivos, Inc
   4  */
   5
   6 #ifndef _ASM_HWPROBE_H
   7 #define _ASM_HWPROBE_H
   8
   9 #include <uapi/asm/hwprobe.h>
  10
  11 #define RISCV_HWPROBE_MAX_KEY 9
  12
  13 static inline bool riscv_hwprobe_key_is_valid(__s64 key)
  14 {
  15         return key >= 0 && key <= RISCV_HWPROBE_MAX_KEY;
  16 }
  17
  18 static inline bool hwprobe_key_is_bitmask(__s64 key)
  19 {
  20         switch (key) {
  21         case RISCV_HWPROBE_KEY_BASE_BEHAVIOR:
  22         case RISCV_HWPROBE_KEY_IMA_EXT_0:
  23         case RISCV_HWPROBE_KEY_CPUPERF_0:
  24                 return true;
  25         }
  26
  27         return false;
  28 }
  29
  30 static inline bool riscv_hwprobe_pair_cmp(struct riscv_hwprobe *pair,
  31                                           struct riscv_hwprobe *other_pair)
  32 {
  33         if (pair->key != other_pair->key)
  34                 return false;
  35
  36         if (hwprobe_key_is_bitmask(pair->key))
  37                 return (pair->value & other_pair->value) == other_pair->value;
  38
  39         return pair->value == other_pair->value;
  40 }
  41
  42 #endif