sh: Move in the SH-5 mmu_context headers.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 0 insertions, 208 deletions

diff --git a/include/asm-sh64/mmu_context.h b/include/asm-sh64/mmu_context.h
deleted file mode 100644
index 507bf72bb8e..00000000000
--- a/include/asm-sh64/mmu_context.h
+++ /dev/null
@@ -1,208 +0,0 @@
-#ifndef __ASM_SH64_MMU_CONTEXT_H
-#define __ASM_SH64_MMU_CONTEXT_H
-
-/*
- * 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.
- *
- * include/asm-sh64/mmu_context.h
- *
- * Copyright (C) 2000, 2001  Paolo Alberelli
- * Copyright (C) 2003  Paul Mundt
- *
- * ASID handling idea taken from MIPS implementation.
- *
- */
-
-#ifndef __ASSEMBLY__
-
-/*
- * Cache of MMU context last used.
- *
- * The MMU "context" consists of two things:
- *   (a) TLB cache version (or cycle, top 24 bits of mmu_context_cache)
- *   (b) ASID (Address Space IDentifier, bottom 8 bits of mmu_context_cache)
- */
-extern unsigned long mmu_context_cache;
-
-#include <asm/page.h>
-#include <asm-generic/mm_hooks.h>
-
-/* Current mm's pgd */
-extern pgd_t *mmu_pdtp_cache;
-
-#define SR_ASID_MASK		0xffffffffff00ffffULL
-#define SR_ASID_SHIFT		16
-
-#define MMU_CONTEXT_ASID_MASK		0x000000ff
-#define MMU_CONTEXT_VERSION_MASK	0xffffff00
-#define MMU_CONTEXT_FIRST_VERSION	0x00000100
-#define NO_CONTEXT			0
-
-/* ASID is 8-bit value, so it can't be 0x100 */
-#define MMU_NO_ASID			0x100
-
-
-/*
- * Virtual Page Number mask
- */
-#define MMU_VPN_MASK	0xfffff000
-
-static inline void
-get_new_mmu_context(struct mm_struct *mm)
-{
-	extern void flush_tlb_all(void);
-	extern void flush_cache_all(void);
-
-	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. */
-		flush_tlb_all();
-		/* We have to flush all caches as ASIDs are
-                   used in cache */
-		flush_cache_all();
-		/* Fix version if needed.
-		   Note that we avoid version #0/asid #0 to distingush NO_CONTEXT. */
-		if (!mc)
-			mmu_context_cache = mc = MMU_CONTEXT_FIRST_VERSION;
-	}
-	mm->context = 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 ^ 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)
-{
-	mm->context = NO_CONTEXT;
-
-	return 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)
-{
-	extern void flush_tlb_mm(struct mm_struct *mm);
-
-	/* Well, at least free TLB entries */
-	flush_tlb_mm(mm);
-}
-
-#endif	/* __ASSEMBLY__ */
-
-/* Common defines */
-#define TLB_STEP	0x00000010
-#define TLB_PTEH	0x00000000
-#define TLB_PTEL	0x00000008
-
-/* PTEH defines */
-#define PTEH_ASID_SHIFT	2
-#define PTEH_VALID	0x0000000000000001
-#define PTEH_SHARED	0x0000000000000002
-#define PTEH_MATCH_ASID	0x00000000000003ff
-
-#ifndef __ASSEMBLY__
-/* This has to be a common function because the next location to fill
- * information is shared. */
-extern void __do_tlb_refill(unsigned long address, unsigned long long is_text_not_data, pte_t *pte);
-
-/* Profiling counter. */
-#ifdef CONFIG_SH64_PROC_TLB
-extern unsigned long long calls_to_do_fast_page_fault;
-#endif
-
-static inline unsigned long get_asid(void)
-{
-	unsigned long long sr;
-
-	asm volatile ("getcon   " __SR ", %0\n\t"
-		      : "=r" (sr));
-
-	sr = (sr >> SR_ASID_SHIFT) & MMU_CONTEXT_ASID_MASK;
-	return (unsigned long) sr;
-}
-
-/* Set ASID into SR */
-static inline void set_asid(unsigned long asid)
-{
-	unsigned long long sr, pc;
-
-	asm volatile ("getcon	" __SR ", %0" : "=r" (sr));
-
-	sr = (sr & SR_ASID_MASK) | (asid << SR_ASID_SHIFT);
-
-	/*
-	 * It is possible that this function may be inlined and so to avoid
-	 * the assembler reporting duplicate symbols we make use of the gas trick
-	 * of generating symbols using numerics and forward reference.
-	 */
-	asm volatile ("movi	1, %1\n\t"
-		      "shlli	%1, 28, %1\n\t"
-		      "or	%0, %1, %1\n\t"
-		      "putcon	%1, " __SR "\n\t"
-		      "putcon	%0, " __SSR "\n\t"
-		      "movi	1f, %1\n\t"
-		      "ori	%1, 1 , %1\n\t"
-		      "putcon	%1, " __SPC "\n\t"
-		      "rte\n"
-		      "1:\n\t"
-		      : "=r" (sr), "=r" (pc) : "0" (sr));
-}
-
-/*
- * 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 & MMU_CONTEXT_ASID_MASK);
-}
-
-
-static __inline__ void switch_mm(struct mm_struct *prev,
-				 struct mm_struct *next,
-				 struct task_struct *tsk)
-{
-	if (prev != next) {
-		mmu_pdtp_cache = next->pgd;
-		activate_context(next);
-	}
-}
-
-#define deactivate_mm(tsk,mm)	do { } while (0)
-
-#define activate_mm(prev, next) \
-	switch_mm((prev),(next),NULL)
-
-static inline void
-enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
-{
-}
-
-#endif	/* __ASSEMBLY__ */
-
-#endif /* __ASM_SH64_MMU_CONTEXT_H */