LXR linux/arch/mips/include/asm/bugs.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * This is included by init/main.c to check for architecture-dependent bugs.
   4 *
   5 * Copyright (C) 2007  Maciej W. Rozycki
   6 *
   7 * Needs:
   8 *      void check_bugs(void);
   9 */
  10#ifndef _ASM_BUGS_H
  11#define _ASM_BUGS_H
  12
  13#include <linux/bug.h>
  14#include <linux/delay.h>
  15#include <linux/smp.h>
  16
  17#include <asm/cpu.h>
  18#include <asm/cpu-info.h>
  19
  20extern int daddiu_bug;
  21
  22extern void check_bugs64_early(void);
  23
  24extern void check_bugs32(void);
  25extern void check_bugs64(void);
  26
  27static inline void check_bugs_early(void)
  28{
  29        if (IS_ENABLED(CONFIG_CPU_R4X00_BUGS64))
  30                check_bugs64_early();
  31}
  32
  33static inline void check_bugs(void)
  34{
  35        unsigned int cpu = smp_processor_id();
  36
  37        cpu_data[cpu].udelay_val = loops_per_jiffy;
  38        check_bugs32();
  39
  40        if (IS_ENABLED(CONFIG_CPU_R4X00_BUGS64))
  41                check_bugs64();
  42}
  43
  44static inline int r4k_daddiu_bug(void)
  45{
  46        if (!IS_ENABLED(CONFIG_CPU_R4X00_BUGS64))
  47                return 0;
  48
  49        WARN_ON(daddiu_bug < 0);
  50        return daddiu_bug != 0;
  51}
  52
  53#endif /* _ASM_BUGS_H */
  54