xtensa: move headers files to arch/xtensa/include

[safe/jmp/linux-2.6] / include / asm-xtensa / mmu_context.h

diff --git a/include/asm-xtensa/mmu_context.h b/include/asm-xtensa/mmu_context.h
deleted file mode 100644 (file)
index c0fd8e5..0000000
--- a/include/asm-xtensa/mmu_context.h
+++ /dev/null
@@ -1,136 +0,0 @@
-/*
- * include/asm-xtensa/mmu_context.h
- *
- * Switch an MMU context.
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2001 - 2005 Tensilica Inc.
- */
-
-#ifndef _XTENSA_MMU_CONTEXT_H
-#define _XTENSA_MMU_CONTEXT_H
-
-#include <linux/stringify.h>
-#include <linux/sched.h>
-
-#include <asm/pgtable.h>
-#include <asm/cacheflush.h>
-#include <asm/tlbflush.h>
-#include <asm-generic/mm_hooks.h>
-
-#define XCHAL_MMU_ASID_BITS    8
-
-#if (XCHAL_HAVE_TLBS != 1)
-# error "Linux must have an MMU!"
-#endif
-
-extern unsigned long asid_cache;
-
-/*
- * NO_CONTEXT is the invalid ASID value that we don't ever assign to
- * any user or kernel context.
- *
- * 0 invalid
- * 1 kernel
- * 2 reserved
- * 3 reserved
- * 4...255 available
- */
-
-#define NO_CONTEXT     0
-#define ASID_USER_FIRST        4
-#define ASID_MASK      ((1 << XCHAL_MMU_ASID_BITS) - 1)
-#define ASID_INSERT(x) (0x03020001 | (((x) & ASID_MASK) << 8))
-
-static inline void set_rasid_register (unsigned long val)
-{
-       __asm__ __volatile__ (" wsr %0, "__stringify(RASID)"\n\t"
-                             " isync\n" : : "a" (val));
-}
-
-static inline unsigned long get_rasid_register (void)
-{
-       unsigned long tmp;
-       __asm__ __volatile__ (" rsr %0,"__stringify(RASID)"\n\t" : "=a" (tmp));
-       return tmp;
-}
-
-static inline void
-__get_new_mmu_context(struct mm_struct *mm)
-{
-       extern void flush_tlb_all(void);
-       if (! (++asid_cache & ASID_MASK) ) {
-               flush_tlb_all(); /* start new asid cycle */
-               asid_cache += ASID_USER_FIRST;
-       }
-       mm->context = asid_cache;
-}
-
-static inline void
-__load_mmu_context(struct mm_struct *mm)
-{
-       set_rasid_register(ASID_INSERT(mm->context));
-       invalidate_page_directory();
-}
-
-/*
- * 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)
-{
-       mm->context = NO_CONTEXT;
-       return 0;
-}
-
-/*
- * 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_mm(struct mm_struct *prev, struct mm_struct *next)
-{
-       /* Unconditionally get a new ASID.  */
-
-       __get_new_mmu_context(next);
-       __load_mmu_context(next);
-}
-
-
-static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
-                             struct task_struct *tsk)
-{
-       unsigned long asid = asid_cache;
-
-       /* Check if our ASID is of an older version and thus invalid */
-
-       if (next->context == NO_CONTEXT || ((next->context^asid) & ~ASID_MASK))
-               __get_new_mmu_context(next);
-
-       __load_mmu_context(next);
-}
-
-#define deactivate_mm(tsk, mm) do { } while(0)
-
-/*
- * Destroy context related info for an mm_struct that is about
- * to be put to rest.
- */
-static inline void destroy_context(struct mm_struct *mm)
-{
-       invalidate_page_directory();
-}
-
-
-static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
-{
-       /* Nothing to do. */
-
-}
-
-#endif /* _XTENSA_MMU_CONTEXT_H */