powerpc: merge tlb.h

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

1 files changed, 70 insertions, 0 deletions

diff --git a/include/asm-powerpc/tlb.h b/include/asm-powerpc/tlb.h
new file mode 100644
index 000000000000..56659f121779
--- /dev/null
+++ b/include/asm-powerpc/tlb.h
@@ -0,0 +1,70 @@
+/*
+ *	TLB shootdown specifics for powerpc
+ *
+ * Copyright (C) 2002 Anton Blanchard, IBM Corp.
+ * Copyright (C) 2002 Paul Mackerras, IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#ifndef _ASM_POWERPC_TLB_H
+#define _ASM_POWERPC_TLB_H
+
+#include <linux/config.h>
+#ifndef __powerpc64__
+#include <asm/pgtable.h>
+#endif
+#include <asm/pgalloc.h>
+#include <asm/tlbflush.h>
+#ifndef __powerpc64__
+#include <asm/page.h>
+#include <asm/mmu.h>
+#endif
+
+struct mmu_gather;
+
+#define tlb_start_vma(tlb, vma)	do { } while (0)
+#define tlb_end_vma(tlb, vma)	do { } while (0)
+
+#if !defined(CONFIG_PPC_STD_MMU)
+
+#define tlb_flush(tlb)			flush_tlb_mm((tlb)->mm)
+
+#elif defined(__powerpc64__)
+
+extern void pte_free_finish(void);
+
+static inline void tlb_flush(struct mmu_gather *tlb)
+{
+	flush_tlb_pending();
+	pte_free_finish();
+}
+
+#else
+
+extern void tlb_flush(struct mmu_gather *tlb);
+
+#endif
+
+/* Get the generic bits... */
+#include <asm-generic/tlb.h>
+
+#if !defined(CONFIG_PPC_STD_MMU) || defined(__powerpc64__)
+
+#define __tlb_remove_tlb_entry(tlb, pte, address) do { } while (0)
+
+#else
+extern void flush_hash_entry(struct mm_struct *mm, pte_t *ptep,
+			     unsigned long address);
+
+static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep,
+					unsigned long address)
+{
+	if (pte_val(*ptep) & _PAGE_HASHPTE)
+		flush_hash_entry(tlb->mm, ptep, address);
+}
+
+#endif
+#endif /* __ASM_POWERPC_TLB_H */