sh: Move in the SH-5 mmu_context headers.

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

1 files changed, 47 insertions, 0 deletions

diff --git a/include/asm-sh/mmu_context_32.h b/include/asm-sh/mmu_context_32.h
new file mode 100644
index 000000000000..f4f9aebd68b7
--- /dev/null
+++ b/include/asm-sh/mmu_context_32.h
@@ -0,0 +1,47 @@
+#ifndef __ASM_SH_MMU_CONTEXT_32_H
+#define __ASM_SH_MMU_CONTEXT_32_H
+
+/*
+ * 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)
+{
+        /* Do nothing */
+}
+
+static inline void set_asid(unsigned long asid)
+{
+        unsigned long __dummy;
+
+        __asm__ __volatile__ ("mov.l    %2, %0\n\t"
+                              "and      %3, %0\n\t"
+                              "or       %1, %0\n\t"
+                              "mov.l    %0, %2"
+                              : "=&r" (__dummy)
+                              : "r" (asid), "m" (__m(MMU_PTEH)),
+                                "r" (0xffffff00));
+}
+
+static inline unsigned long get_asid(void)
+{
+        unsigned long asid;
+
+        __asm__ __volatile__ ("mov.l    %1, %0"
+                              : "=r" (asid)
+                              : "m" (__m(MMU_PTEH)));
+        asid &= MMU_CONTEXT_ASID_MASK;
+        return asid;
+}
+
+/* MMU_TTB is used for optimizing the fault handling. */
+static inline void set_TTB(pgd_t *pgd)
+{
+        ctrl_outl((unsigned long)pgd, MMU_TTB);
+}
+
+static inline pgd_t *get_TTB(void)
+{
+        return (pgd_t *)ctrl_inl(MMU_TTB);
+}
+#endif /* __ASM_SH_MMU_CONTEXT_32_H */