1e9564df7SGuo Ren /* SPDX-License-Identifier: GPL-2.0 */ 2e9564df7SGuo Ren 3e9564df7SGuo Ren #ifndef __ASM_CSKY_MMU_CONTEXT_H 4e9564df7SGuo Ren #define __ASM_CSKY_MMU_CONTEXT_H 5e9564df7SGuo Ren 6e9564df7SGuo Ren #include <asm-generic/mm_hooks.h> 7e9564df7SGuo Ren #include <asm/setup.h> 8e9564df7SGuo Ren #include <asm/page.h> 9e9564df7SGuo Ren #include <asm/cacheflush.h> 10e9564df7SGuo Ren #include <asm/tlbflush.h> 11e9564df7SGuo Ren 12e9564df7SGuo Ren #include <linux/errno.h> 13e9564df7SGuo Ren #include <linux/sched.h> 14e9564df7SGuo Ren #include <abi/ckmmu.h> 15e9564df7SGuo Ren 1622d55f02SGuo Ren #define ASID_MASK ((1 << CONFIG_CPU_ASID_BITS) - 1) 1722d55f02SGuo Ren #define cpu_asid(mm) (atomic64_read(&mm->context.asid) & ASID_MASK) 1822d55f02SGuo Ren 1922d55f02SGuo Ren #define init_new_context(tsk,mm) ({ atomic64_set(&(mm)->context.asid, 0); 0; }) 20e9564df7SGuo Ren 2122d55f02SGuo Ren void check_and_switch_context(struct mm_struct *mm, unsigned int cpu); 2222d55f02SGuo Ren 23e9564df7SGuo Ren static inline void switch_mm(struct mm_struct * prev,struct mm_struct * next,struct task_struct * tsk)249d35dc30SGuo Renswitch_mm(struct mm_struct *prev, struct mm_struct *next, 25e9564df7SGuo Ren struct task_struct *tsk) 26e9564df7SGuo Ren { 2722d55f02SGuo Ren unsigned int cpu = smp_processor_id(); 2822d55f02SGuo Ren 299d35dc30SGuo Ren if (prev != next) 3022d55f02SGuo Ren check_and_switch_context(next, cpu); 31e9564df7SGuo Ren 32*3b756ccdSGuo Ren setup_pgd(next->pgd, next->context.asid.counter); 33997153b9SGuo Ren 34997153b9SGuo Ren flush_icache_deferred(next); 35e9564df7SGuo Ren } 36746192ffSNicholas Piggin 37746192ffSNicholas Piggin #include <asm-generic/mmu_context.h> 38746192ffSNicholas Piggin 39e9564df7SGuo Ren #endif /* __ASM_CSKY_MMU_CONTEXT_H */ 40