arch: remove m32r port

[sfrench/cifs-2.6.git] / arch / m32r / include / asm / mmu_context.h

diff --git a/arch/m32r/include/asm/mmu_context.h b/arch/m32r/include/asm/mmu_context.h
deleted file mode 100644 (file)
index 8a499d0..0000000
--- a/arch/m32r/include/asm/mmu_context.h
+++ /dev/null
@@ -1,167 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_M32R_MMU_CONTEXT_H
-#define _ASM_M32R_MMU_CONTEXT_H
-#ifdef __KERNEL__
-
-#include <asm/m32r.h>
-
-#define MMU_CONTEXT_ASID_MASK      (0x000000FF)
-#define MMU_CONTEXT_VERSION_MASK   (0xFFFFFF00)
-#define MMU_CONTEXT_FIRST_VERSION  (0x00000100)
-#define NO_CONTEXT                 (0x00000000)
-
-#ifndef __ASSEMBLY__
-
-#include <linux/atomic.h>
-#include <linux/mm_types.h>
-
-#include <asm/pgalloc.h>
-#include <asm/mmu.h>
-#include <asm/tlbflush.h>
-#include <asm-generic/mm_hooks.h>
-
-/*
- * Cache of MMU context last used.
- */
-#ifndef CONFIG_SMP
-extern unsigned long mmu_context_cache_dat;
-#define mmu_context_cache      mmu_context_cache_dat
-#define mm_context(mm)         mm->context
-#else /* not CONFIG_SMP */
-extern unsigned long mmu_context_cache_dat[];
-#define mmu_context_cache      mmu_context_cache_dat[smp_processor_id()]
-#define mm_context(mm)         mm->context[smp_processor_id()]
-#endif /* not CONFIG_SMP */
-
-#define set_tlb_tag(entry, tag)                (*entry = (tag & PAGE_MASK)|get_asid())
-#define set_tlb_data(entry, data)      (*entry = (data | _PAGE_PRESENT))
-
-#ifdef CONFIG_MMU
-#define enter_lazy_tlb(mm, tsk)        do { } while (0)
-
-static inline void get_new_mmu_context(struct mm_struct *mm)
-{
-       unsigned long mc = ++mmu_context_cache;
-
-       if (!(mc & MMU_CONTEXT_ASID_MASK)) {
-               /* We exhaust ASID of this version.
-                  Flush all TLB and start new cycle. */
-               local_flush_tlb_all();
-               /* Fix version if needed.
-                  Note that we avoid version #0 to distinguish NO_CONTEXT. */
-               if (!mc)
-                       mmu_context_cache = mc = MMU_CONTEXT_FIRST_VERSION;
-       }
-       mm_context(mm) = mc;
-}
-
-/*
- * Get MMU context if needed.
- */
-static inline void get_mmu_context(struct mm_struct *mm)
-{
-       if (mm) {
-               unsigned long mc = mmu_context_cache;
-
-               /* Check if we have old version of context.
-                  If it's old, we need to get new context with new version. */
-               if ((mm_context(mm) ^ mc) & MMU_CONTEXT_VERSION_MASK)
-                       get_new_mmu_context(mm);
-       }
-}
-
-/*
- * Initialize the context related info for a new mm_struct
- * instance.
- */
-static inline int init_new_context(struct task_struct *tsk,
-       struct mm_struct *mm)
-{
-#ifndef CONFIG_SMP
-       mm->context = NO_CONTEXT;
-#else /* CONFIG_SMP */
-       int num_cpus = num_online_cpus();
-       int i;
-
-       for (i = 0 ; i < num_cpus ; i++)
-               mm->context[i] = NO_CONTEXT;
-#endif /* CONFIG_SMP */
-
-       return 0;
-}
-
-/*
- * Destroy context related info for an mm_struct that is about
- * to be put to rest.
- */
-#define destroy_context(mm)    do { } while (0)
-
-static inline void set_asid(unsigned long asid)
-{
-       *(volatile unsigned long *)MASID = (asid & MMU_CONTEXT_ASID_MASK);
-}
-
-static inline unsigned long get_asid(void)
-{
-       unsigned long asid;
-
-       asid = *(volatile long *)MASID;
-       asid &= MMU_CONTEXT_ASID_MASK;
-
-       return asid;
-}
-
-/*
- * After we have set current->mm to a new value, this activates
- * the context for the new mm so we see the new mappings.
- */
-static inline void activate_context(struct mm_struct *mm)
-{
-       get_mmu_context(mm);
-       set_asid(mm_context(mm) & MMU_CONTEXT_ASID_MASK);
-}
-
-static inline void switch_mm(struct mm_struct *prev,
-       struct mm_struct *next, struct task_struct *tsk)
-{
-#ifdef CONFIG_SMP
-       int cpu = smp_processor_id();
-#endif /* CONFIG_SMP */
-
-       if (prev != next) {
-#ifdef CONFIG_SMP
-               cpumask_set_cpu(cpu, mm_cpumask(next));
-#endif /* CONFIG_SMP */
-               /* Set MPTB = next->pgd */
-               *(volatile unsigned long *)MPTB = (unsigned long)next->pgd;
-               activate_context(next);
-       }
-#ifdef CONFIG_SMP
-       else
-               if (!cpumask_test_and_set_cpu(cpu, mm_cpumask(next)))
-                       activate_context(next);
-#endif /* CONFIG_SMP */
-}
-
-#define deactivate_mm(tsk, mm) do { } while (0)
-
-#define activate_mm(prev, next)        \
-       switch_mm((prev), (next), NULL)
-
-#else /* not CONFIG_MMU */
-#define get_mmu_context(mm)             do { } while (0)
-#define init_new_context(tsk,mm)        (0)
-#define destroy_context(mm)             do { } while (0)
-#define set_asid(asid)                  do { } while (0)
-#define get_asid()                      (0)
-#define activate_context(mm)            do { } while (0)
-#define switch_mm(prev,next,tsk)        do { } while (0)
-#define deactivate_mm(mm,tsk)           do { } while (0)
-#define activate_mm(prev,next)          do { } while (0)
-#define enter_lazy_tlb(mm,tsk)          do { } while (0)
-#endif /* not CONFIG_MMU */
-
-#endif /* not __ASSEMBLY__ */
-
-#endif /* __KERNEL__ */
-#endif /* _ASM_M32R_MMU_CONTEXT_H */