powerpc: merge tlbflush.h

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

3 files changed, 146 insertions, 167 deletions

diff --git a/include/asm-powerpc/tlbflush.h b/include/asm-powerpc/tlbflush.h
new file mode 100644
index 00000000000..ca3655672bb
--- /dev/null
+++ b/include/asm-powerpc/tlbflush.h
@@ -0,0 +1,146 @@
+#ifndef _ASM_POWERPC_TLBFLUSH_H
+#define _ASM_POWERPC_TLBFLUSH_H
+/*
+ * TLB flushing:
+ *
+ *  - flush_tlb_mm(mm) flushes the specified mm context TLB's
+ *  - flush_tlb_page(vma, vmaddr) flushes one page
+ *  - flush_tlb_page_nohash(vma, vmaddr) flushes one page if SW loaded TLB
+ *  - flush_tlb_range(vma, start, end) flushes a range of pages
+ *  - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
+ *  - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
+ *
+ *  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.
+ */
+#ifdef __KERNEL__
+
+#include <linux/config.h>
+
+struct mm_struct;
+
+#ifdef CONFIG_PPC64
+
+#include <linux/percpu.h>
+#include <asm/page.h>
+
+#define PPC64_TLB_BATCH_NR 192
+
+struct ppc64_tlb_batch {
+	unsigned long index;
+	struct mm_struct *mm;
+	pte_t pte[PPC64_TLB_BATCH_NR];
+	unsigned long vaddr[PPC64_TLB_BATCH_NR];
+	unsigned int large;
+};
+DECLARE_PER_CPU(struct ppc64_tlb_batch, ppc64_tlb_batch);
+
+extern void __flush_tlb_pending(struct ppc64_tlb_batch *batch);
+
+static inline void flush_tlb_pending(void)
+{
+	struct ppc64_tlb_batch *batch = &get_cpu_var(ppc64_tlb_batch);
+
+	if (batch->index)
+		__flush_tlb_pending(batch);
+	put_cpu_var(ppc64_tlb_batch);
+}
+
+extern void flush_hash_page(unsigned long va, pte_t pte, int local);
+void flush_hash_range(unsigned long number, int local);
+
+#else /* CONFIG_PPC64 */
+
+#include <linux/mm.h>
+
+extern void _tlbie(unsigned long address);
+extern void _tlbia(void);
+
+/*
+ * TODO: (CONFIG_FSL_BOOKE) determine if flush_tlb_range &
+ * flush_tlb_kernel_range are best implemented as tlbia vs
+ * specific tlbie's
+ */
+
+#if (defined(CONFIG_4xx) && !defined(CONFIG_44x)) || defined(CONFIG_8xx)
+#define flush_tlb_pending()	asm volatile ("tlbia; sync" : : : "memory")
+#elif defined(CONFIG_4xx) || defined(CONFIG_FSL_BOOKE)
+#define flush_tlb_pending()	_tlbia()
+#endif
+
+/*
+ * This gets called at the end of handling a page fault, when
+ * the kernel has put a new PTE into the page table for the process.
+ * We use it to ensure coherency between the i-cache and d-cache
+ * for the page which has just been mapped in.
+ * On machines which use an MMU hash table, we use this to put a
+ * corresponding HPTE into the hash table ahead of time, instead of
+ * waiting for the inevitable extra hash-table miss exception.
+ */
+extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t);
+
+#endif /* CONFIG_PPC64 */
+
+#if defined(CONFIG_PPC64) || defined(CONFIG_4xx) || \
+	defined(CONFIG_FSL_BOOKE) || defined(CONFIG_8xx)
+
+static inline void flush_tlb_mm(struct mm_struct *mm)
+{
+	flush_tlb_pending();
+}
+
+static inline void flush_tlb_page(struct vm_area_struct *vma,
+				unsigned long vmaddr)
+{
+#ifdef CONFIG_PPC64
+	flush_tlb_pending();
+#else
+	_tlbie(vmaddr);
+#endif
+}
+
+static inline void flush_tlb_page_nohash(struct vm_area_struct *vma,
+					 unsigned long vmaddr)
+{
+#ifndef CONFIG_PPC64
+	_tlbie(vmaddr);
+#endif
+}
+
+static inline void flush_tlb_range(struct vm_area_struct *vma,
+		unsigned long start, unsigned long end)
+{
+	flush_tlb_pending();
+}
+
+static inline void flush_tlb_kernel_range(unsigned long start,
+		unsigned long end)
+{
+	flush_tlb_pending();
+}
+
+#else	/* 6xx, 7xx, 7xxx cpus */
+
+extern void flush_tlb_mm(struct mm_struct *mm);
+extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
+extern void flush_tlb_page_nohash(struct vm_area_struct *vma, unsigned long addr);
+extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
+			    unsigned long end);
+extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
+
+#endif
+
+/*
+ * This is called in munmap when we have freed up some page-table
+ * pages.  We don't need to do anything here, there's nothing special
+ * about our page-table pages.  -- paulus
+ */
+static inline void flush_tlb_pgtables(struct mm_struct *mm,
+		unsigned long start, unsigned long end)
+{
+}
+
+#endif /*__KERNEL__ */
+#endif /* _ASM_POWERPC_TLBFLUSH_H */
diff --git a/include/asm-ppc/tlbflush.h b/include/asm-ppc/tlbflush.h
deleted file mode 100644
index 9afee4ffc83..00000000000
--- a/include/asm-ppc/tlbflush.h
+++ /dev/null
@@ -1,115 +0,0 @@
-/*
- * include/asm-ppc/tlbflush.h
- *
- *  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.
- */
-#ifdef __KERNEL__
-#ifndef _PPC_TLBFLUSH_H
-#define _PPC_TLBFLUSH_H
-
-#include <linux/config.h>
-#include <linux/mm.h>
-
-extern void _tlbie(unsigned long address);
-extern void _tlbia(void);
-
-#if defined(CONFIG_4xx)
-
-#ifndef CONFIG_44x
-#define __tlbia()	asm volatile ("sync; tlbia; isync" : : : "memory")
-#else
-#define __tlbia		_tlbia
-#endif
-
-static inline void flush_tlb_mm(struct mm_struct *mm)
-	{ __tlbia(); }
-static inline void flush_tlb_page(struct vm_area_struct *vma,
-				unsigned long vmaddr)
-	{ _tlbie(vmaddr); }
-static inline void flush_tlb_page_nohash(struct vm_area_struct *vma,
-					 unsigned long vmaddr)
-	{ _tlbie(vmaddr); }
-static inline void flush_tlb_range(struct vm_area_struct *vma,
-				unsigned long start, unsigned long end)
-	{ __tlbia(); }
-static inline void flush_tlb_kernel_range(unsigned long start,
-				unsigned long end)
-	{ __tlbia(); }
-
-#elif defined(CONFIG_FSL_BOOKE)
-
-/* TODO: determine if flush_tlb_range & flush_tlb_kernel_range
- * are best implemented as tlbia vs specific tlbie's */
-
-#define __tlbia()	_tlbia()
-
-static inline void flush_tlb_mm(struct mm_struct *mm)
-	{ __tlbia(); }
-static inline void flush_tlb_page(struct vm_area_struct *vma,
-				unsigned long vmaddr)
-	{ _tlbie(vmaddr); }
-static inline void flush_tlb_page_nohash(struct vm_area_struct *vma,
-					 unsigned long vmaddr)
-	{ _tlbie(vmaddr); }
-static inline void flush_tlb_range(struct vm_area_struct *vma,
-				unsigned long start, unsigned long end)
-	{ __tlbia(); }
-static inline void flush_tlb_kernel_range(unsigned long start,
-				unsigned long end)
-	{ __tlbia(); }
-
-#elif defined(CONFIG_8xx)
-#define __tlbia()	asm volatile ("tlbia; sync" : : : "memory")
-
-static inline void flush_tlb_mm(struct mm_struct *mm)
-	{ __tlbia(); }
-static inline void flush_tlb_page(struct vm_area_struct *vma,
-				unsigned long vmaddr)
-	{ _tlbie(vmaddr); }
-static inline void flush_tlb_page_nohash(struct vm_area_struct *vma,
-					 unsigned long vmaddr)
-	{ _tlbie(vmaddr); }
-static inline void flush_tlb_range(struct vm_area_struct *vma,
-				unsigned long start, unsigned long end)
-	{ __tlbia(); }
-static inline void flush_tlb_kernel_range(unsigned long start,
-				unsigned long end)
-	{ __tlbia(); }
-
-#else	/* 6xx, 7xx, 7xxx cpus */
-struct mm_struct;
-struct vm_area_struct;
-extern void flush_tlb_mm(struct mm_struct *mm);
-extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
-extern void flush_tlb_page_nohash(struct vm_area_struct *vma, unsigned long addr);
-extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
-			    unsigned long end);
-extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
-#endif
-
-/*
- * This is called in munmap when we have freed up some page-table
- * pages.  We don't need to do anything here, there's nothing special
- * about our page-table pages.  -- paulus
- */
-static inline void flush_tlb_pgtables(struct mm_struct *mm,
-				      unsigned long start, unsigned long end)
-{
-}
-
-/*
- * This gets called at the end of handling a page fault, when
- * the kernel has put a new PTE into the page table for the process.
- * We use it to ensure coherency between the i-cache and d-cache
- * for the page which has just been mapped in.
- * On machines which use an MMU hash table, we use this to put a
- * corresponding HPTE into the hash table ahead of time, instead of
- * waiting for the inevitable extra hash-table miss exception.
- */
-extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t);
-
-#endif /* _PPC_TLBFLUSH_H */
-#endif /*__KERNEL__ */
diff --git a/include/asm-ppc64/tlbflush.h b/include/asm-ppc64/tlbflush.h
deleted file mode 100644
index 626f505c6ee..00000000000
--- a/include/asm-ppc64/tlbflush.h
+++ /dev/null
@@ -1,52 +0,0 @@
-#ifndef _PPC64_TLBFLUSH_H
-#define _PPC64_TLBFLUSH_H
-
-/*
- * TLB flushing:
- *
- *  - flush_tlb_mm(mm) flushes the specified mm context TLB's
- *  - flush_tlb_page(vma, vmaddr) flushes one page
- *  - flush_tlb_page_nohash(vma, vmaddr) flushes one page if SW loaded TLB
- *  - flush_tlb_range(vma, start, end) flushes a range of pages
- *  - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
- *  - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
- */
-
-#include <linux/percpu.h>
-#include <asm/page.h>
-
-#define PPC64_TLB_BATCH_NR 192
-
-struct mm_struct;
-struct ppc64_tlb_batch {
-	unsigned long index;
-	struct mm_struct *mm;
-	pte_t pte[PPC64_TLB_BATCH_NR];
-	unsigned long vaddr[PPC64_TLB_BATCH_NR];
-	unsigned int large;
-};
-DECLARE_PER_CPU(struct ppc64_tlb_batch, ppc64_tlb_batch);
-
-extern void __flush_tlb_pending(struct ppc64_tlb_batch *batch);
-
-static inline void flush_tlb_pending(void)
-{
-	struct ppc64_tlb_batch *batch = &get_cpu_var(ppc64_tlb_batch);
-
-	if (batch->index)
-		__flush_tlb_pending(batch);
-	put_cpu_var(ppc64_tlb_batch);
-}
-
-#define flush_tlb_mm(mm)			flush_tlb_pending()
-#define flush_tlb_page(vma, addr)		flush_tlb_pending()
-#define flush_tlb_page_nohash(vma, addr)       	do { } while (0)
-#define flush_tlb_range(vma, start, end) \
-		do { (void)(start); flush_tlb_pending(); } while (0)
-#define flush_tlb_kernel_range(start, end)	flush_tlb_pending()
-#define flush_tlb_pgtables(mm, start, end)	do { } while (0)
-
-extern void flush_hash_page(unsigned long va, pte_t pte, int local);
-void flush_hash_range(unsigned long number, int local);
-
-#endif /* _PPC64_TLBFLUSH_H */