1 files changed, 0 insertions, 327 deletions
diff --git a/ANDROID_3.4.5/arch/m68k/include/asm/mmu_context.h b/ANDROID_3.4.5/arch/m68k/include/asm/mmu_context.h
deleted file mode 100644
index dc3be991..00000000
--- a/ANDROID_3.4.5/arch/m68k/include/asm/mmu_context.h
+++ /dev/null
@@ -1,327 +0,0 @@
-#ifndef __M68K_MMU_CONTEXT_H
-#define __M68K_MMU_CONTEXT_H
-
-#include <asm-generic/mm_hooks.h>
-
-static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
-{
-}
-
-#ifdef CONFIG_MMU
-
-#if defined(CONFIG_COLDFIRE)
-
-#include <asm/atomic.h>
-#include <asm/bitops.h>
-#include <asm/mcfmmu.h>
-#include <asm/mmu.h>
-
-#define NO_CONTEXT		256
-#define LAST_CONTEXT		255
-#define FIRST_CONTEXT		1
-
-extern unsigned long context_map[];
-extern mm_context_t next_mmu_context;
-
-extern atomic_t nr_free_contexts;
-extern struct mm_struct *context_mm[LAST_CONTEXT+1];
-extern void steal_context(void);
-
-static inline void get_mmu_context(struct mm_struct *mm)
-{
-	mm_context_t ctx;
-
-	if (mm->context != NO_CONTEXT)
-		return;
-	while (atomic_dec_and_test_lt(&nr_free_contexts)) {
-		atomic_inc(&nr_free_contexts);
-		steal_context();
-	}
-	ctx = next_mmu_context;
-	while (test_and_set_bit(ctx, context_map)) {
-		ctx = find_next_zero_bit(context_map, LAST_CONTEXT+1, ctx);
-		if (ctx > LAST_CONTEXT)
-			ctx = 0;
-	}
-	next_mmu_context = (ctx + 1) & LAST_CONTEXT;
-	mm->context = ctx;
-	context_mm[ctx] = mm;
-}
-
-/*
- * Set up the context for a new address space.
- */
-#define init_new_context(tsk, mm)	(((mm)->context = NO_CONTEXT), 0)
-
-/*
- * We're finished using the context for an address space.
- */
-static inline void destroy_context(struct mm_struct *mm)
-{
-	if (mm->context != NO_CONTEXT) {
-		clear_bit(mm->context, context_map);
-		mm->context = NO_CONTEXT;
-		atomic_inc(&nr_free_contexts);
-	}
-}
-
-static inline void set_context(mm_context_t context, pgd_t *pgd)
-{
-	__asm__ __volatile__ ("movec %0,%%asid" : : "d" (context));
-}
-
-static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
-	struct task_struct *tsk)
-{
-	get_mmu_context(tsk->mm);
-	set_context(tsk->mm->context, next->pgd);
-}
-
-/*
- * 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 *active_mm,
-	struct mm_struct *mm)
-{
-	get_mmu_context(mm);
-	set_context(mm->context, mm->pgd);
-}
-
-#define deactivate_mm(tsk, mm) do { } while (0)
-
-extern void mmu_context_init(void);
-#define prepare_arch_switch(next) load_ksp_mmu(next)
-
-static inline void load_ksp_mmu(struct task_struct *task)
-{
-	unsigned long flags;
-	struct mm_struct *mm;
-	int asid;
-	pgd_t *pgd;
-	pmd_t *pmd;
-	pte_t *pte;
-	unsigned long mmuar;
-
-	local_irq_save(flags);
-	mmuar = task->thread.ksp;
-
-	/* Search for a valid TLB entry, if one is found, don't remap */
-	mmu_write(MMUAR, mmuar);
-	mmu_write(MMUOR, MMUOR_STLB | MMUOR_ADR);
-	if (mmu_read(MMUSR) & MMUSR_HIT)
-		goto end;
-
-	if (mmuar >= PAGE_OFFSET) {
-		mm = &init_mm;
-	} else {
-		pr_info("load_ksp_mmu: non-kernel mm found: 0x%p\n", task->mm);
-		mm = task->mm;
-	}
-
-	if (!mm)
-		goto bug;
-
-	pgd = pgd_offset(mm, mmuar);
-	if (pgd_none(*pgd))
-		goto bug;
-
-	pmd = pmd_offset(pgd, mmuar);
-	if (pmd_none(*pmd))
-		goto bug;
-
-	pte = (mmuar >= PAGE_OFFSET) ? pte_offset_kernel(pmd, mmuar)
-				     : pte_offset_map(pmd, mmuar);
-	if (pte_none(*pte) || !pte_present(*pte))
-		goto bug;
-
-	set_pte(pte, pte_mkyoung(*pte));
-	asid = mm->context & 0xff;
-	if (!pte_dirty(*pte) && mmuar <= PAGE_OFFSET)
-		set_pte(pte, pte_wrprotect(*pte));
-
-	mmu_write(MMUTR, (mmuar & PAGE_MASK) | (asid << MMUTR_IDN) |
-		(((int)(pte->pte) & (int)CF_PAGE_MMUTR_MASK)
-		>> CF_PAGE_MMUTR_SHIFT) | MMUTR_V);
-
-	mmu_write(MMUDR, (pte_val(*pte) & PAGE_MASK) |
-		((pte->pte) & CF_PAGE_MMUDR_MASK) | MMUDR_SZ_8KB | MMUDR_X);
-
-	mmu_write(MMUOR, MMUOR_ACC | MMUOR_UAA);
-
-	goto end;
-
-bug:
-	pr_info("ksp load failed: mm=0x%p ksp=0x08%lx\n", mm, mmuar);
-end:
-	local_irq_restore(flags);
-}
-
-#elif defined(CONFIG_SUN3)
-#include <asm/sun3mmu.h>
-#include <linux/sched.h>
-
-extern unsigned long get_free_context(struct mm_struct *mm);
-extern void clear_context(unsigned long context);
-
-/* set the context for a new task to unmapped */
-static inline int init_new_context(struct task_struct *tsk,
-				   struct mm_struct *mm)
-{
-	mm->context = SUN3_INVALID_CONTEXT;
-	return 0;
-}
-
-/* find the context given to this process, and if it hasn't already
-   got one, go get one for it. */
-static inline void get_mmu_context(struct mm_struct *mm)
-{
-	if (mm->context == SUN3_INVALID_CONTEXT)
-		mm->context = get_free_context(mm);
-}
-
-/* flush context if allocated... */
-static inline void destroy_context(struct mm_struct *mm)
-{
-	if (mm->context != SUN3_INVALID_CONTEXT)
-		clear_context(mm->context);
-}
-
-static inline void activate_context(struct mm_struct *mm)
-{
-	get_mmu_context(mm);
-	sun3_put_context(mm->context);
-}
-
-static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
-			     struct task_struct *tsk)
-{
-	activate_context(tsk->mm);
-}
-
-#define deactivate_mm(tsk, mm)	do { } while (0)
-
-static inline void activate_mm(struct mm_struct *prev_mm,
-			       struct mm_struct *next_mm)
-{
-	activate_context(next_mm);
-}
-
-#else
-
-#include <asm/setup.h>
-#include <asm/page.h>
-#include <asm/pgalloc.h>
-
-static inline int init_new_context(struct task_struct *tsk,
-				   struct mm_struct *mm)
-{
-	mm->context = virt_to_phys(mm->pgd);
-	return 0;
-}
-
-#define destroy_context(mm)		do { } while(0)
-
-static inline void switch_mm_0230(struct mm_struct *mm)
-{
-	unsigned long crp[2] = {
-		0x80000000 | _PAGE_TABLE, mm->context
-	};
-	unsigned long tmp;
-
-	asm volatile (".chip 68030");
-
-	/* flush MC68030/MC68020 caches (they are virtually addressed) */
-	asm volatile (
-		"movec %%cacr,%0;"
-		"orw %1,%0; "
-		"movec %0,%%cacr"
-		: "=d" (tmp) : "di" (FLUSH_I_AND_D));
-
-	/* Switch the root pointer. For a 030-only kernel,
-	 * avoid flushing the whole ATC, we only need to
-	 * flush the user entries. The 68851 does this by
-	 * itself. Avoid a runtime check here.
-	 */
-	asm volatile (
-#ifdef CPU_M68030_ONLY
-		"pmovefd %0,%%crp; "
-		"pflush #0,#4"
-#else
-		"pmove %0,%%crp"
-#endif
-		: : "m" (crp[0]));
-
-	asm volatile (".chip 68k");
-}
-
-static inline void switch_mm_0460(struct mm_struct *mm)
-{
-	asm volatile (".chip 68040");
-
-	/* flush address translation cache (user entries) */
-	asm volatile ("pflushan");
-
-	/* switch the root pointer */
-	asm volatile ("movec %0,%%urp" : : "r" (mm->context));
-
-	if (CPU_IS_060) {
-		unsigned long tmp;
-
-		/* clear user entries in the branch cache */
-		asm volatile (
-			"movec %%cacr,%0; "
-		        "orl %1,%0; "
-		        "movec %0,%%cacr"
-			: "=d" (tmp): "di" (0x00200000));
-	}
-
-	asm volatile (".chip 68k");
-}
-
-static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, struct task_struct *tsk)
-{
-	if (prev != next) {
-		if (CPU_IS_020_OR_030)
-			switch_mm_0230(next);
-		else
-			switch_mm_0460(next);
-	}
-}
-
-#define deactivate_mm(tsk,mm)	do { } while (0)
-
-static inline void activate_mm(struct mm_struct *prev_mm,
-			       struct mm_struct *next_mm)
-{
-	next_mm->context = virt_to_phys(next_mm->pgd);
-
-	if (CPU_IS_020_OR_030)
-		switch_mm_0230(next_mm);
-	else
-		switch_mm_0460(next_mm);
-}
-
-#endif
-
-#else /* !CONFIG_MMU */
-
-static inline int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
-{
-	return 0;
-}
-
-
-static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, struct task_struct *tsk)
-{
-}
-
-#define destroy_context(mm)	do { } while (0)
-#define deactivate_mm(tsk,mm)	do { } while (0)
-
-static inline void activate_mm(struct mm_struct *prev_mm, struct mm_struct *next_mm)
-{
-}
-
-#endif /* CONFIG_MMU */
-#endif /* __M68K_MMU_CONTEXT_H */