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-rw-r--r--arch/m68k/include/asm/mmu_context.h176
-rw-r--r--arch/m68k/include/asm/mmu_context_mm.h154
-rw-r--r--arch/m68k/include/asm/mmu_context_no.h33
3 files changed, 173 insertions, 190 deletions
diff --git a/arch/m68k/include/asm/mmu_context.h b/arch/m68k/include/asm/mmu_context.h
index b440928fc6c..7d4341e55a9 100644
--- a/arch/m68k/include/asm/mmu_context.h
+++ b/arch/m68k/include/asm/mmu_context.h
@@ -1,5 +1,175 @@
-#ifdef __uClinux__
-#include "mmu_context_no.h"
+#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
+#ifndef CONFIG_SUN3
+
+#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
-#include "mmu_context_mm.h"
+ "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);
+}
+
+#else /* 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);
+}
+
+#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 */
diff --git a/arch/m68k/include/asm/mmu_context_mm.h b/arch/m68k/include/asm/mmu_context_mm.h
deleted file mode 100644
index 894dacbcee1..00000000000
--- a/arch/m68k/include/asm/mmu_context_mm.h
+++ /dev/null
@@ -1,154 +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)
-{
-}
-
-#ifndef CONFIG_SUN3
-
-#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);
-}
-
-#else /* 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);
-}
-
-#endif
-#endif
diff --git a/arch/m68k/include/asm/mmu_context_no.h b/arch/m68k/include/asm/mmu_context_no.h
deleted file mode 100644
index 9ccee4278c9..00000000000
--- a/arch/m68k/include/asm/mmu_context_no.h
+++ /dev/null
@@ -1,33 +0,0 @@
-#ifndef __M68KNOMMU_MMU_CONTEXT_H
-#define __M68KNOMMU_MMU_CONTEXT_H
-
-#include <asm/setup.h>
-#include <asm/page.h>
-#include <asm/pgalloc.h>
-#include <asm-generic/mm_hooks.h>
-
-static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
-{
-}
-
-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(struct mm_struct *prev, struct mm_struct *next, struct task_struct *tsk)
-{
-}
-
-#define deactivate_mm(tsk,mm) do { } while (0)
-
-static inline void activate_mm(struct mm_struct *prev_mm,
- struct mm_struct *next_mm)
-{
-}
-
-#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-17 04:14:58 +0000