LXR linux/arch/csky/include/asm/mmu

   1/* SPDX-License-Identifier: GPL-2.0 */
   2
   3#ifndef __ASM_CSKY_MMU_CONTEXT_H
   4#define __ASM_CSKY_MMU_CONTEXT_H
   5
   6#include <asm-generic/mm_hooks.h>
   7#include <asm/setup.h>
   8#include <asm/page.h>
   9#include <asm/cacheflush.h>
  10#include <asm/tlbflush.h>
  11
  12#include <linux/errno.h>
  13#include <linux/sched.h>
  14#include <abi/ckmmu.h>
  15
  16#define ASID_MASK               ((1 << CONFIG_CPU_ASID_BITS) - 1)
  17#define cpu_asid(mm)            (atomic64_read(&mm->context.asid) & ASID_MASK)
  18
  19#define init_new_context(tsk,mm)        ({ atomic64_set(&(mm)->context.asid, 0); 0; })
  20
  21void check_and_switch_context(struct mm_struct *mm, unsigned int cpu);
  22
  23static inline void
  24switch_mm(struct mm_struct *prev, struct mm_struct *next,
  25          struct task_struct *tsk)
  26{
  27        unsigned int cpu = smp_processor_id();
  28
  29        if (prev != next)
  30                check_and_switch_context(next, cpu);
  31
  32        setup_pgd(next->pgd, next->context.asid.counter);
  33
  34        flush_icache_deferred(next);
  35}
  36
  37#include <asm-generic/mmu_context.h>
  38
  39#endif /* __ASM_CSKY_MMU_CONTEXT_H */
  40