--- /dev/null
+#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
+ * - local_flush_tlb_mm(mm, full) flushes the specified mm context on
+ * the local processor
+ * - local_flush_tlb_page(vma, vmaddr) flushes one page on the local processor
+ * - 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
+ *
+ * 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__
+
+#ifdef CONFIG_PPC_MMU_NOHASH
+/*
+ * TLB flushing for software loaded TLB chips
+ *
+ * TODO: (CONFIG_FSL_BOOKE) determine if flush_tlb_range &
+ * flush_tlb_kernel_range are best implemented as tlbia vs
+ * specific tlbie's
+ */
+
+struct vm_area_struct;
+struct mm_struct;
+
+#define MMU_NO_CONTEXT ((unsigned int)-1)
+
+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);
+
+extern void local_flush_tlb_mm(struct mm_struct *mm);
+extern void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
+
+extern void __local_flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
+ int tsize, int ind);
+
+#ifdef CONFIG_SMP
+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(struct mm_struct *mm, unsigned long vmaddr,
+ int tsize, int ind);
+#else
+#define flush_tlb_mm(mm) local_flush_tlb_mm(mm)
+#define flush_tlb_page(vma,addr) local_flush_tlb_page(vma,addr)
+#define __flush_tlb_page(mm,addr,p,i) __local_flush_tlb_page(mm,addr,p,i)
+#endif
+#define flush_tlb_page_nohash(vma,addr) flush_tlb_page(vma,addr)
+
+#elif defined(CONFIG_PPC_STD_MMU_32)
+
+/*
+ * TLB flushing for "classic" hash-MMU 32-bit CPUs, 6xx, 7xx, 7xxx
+ */
+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);
+static inline void local_flush_tlb_page(struct vm_area_struct *vma,
+ unsigned long vmaddr)
+{
+ flush_tlb_page(vma, vmaddr);
+}
+static inline void local_flush_tlb_mm(struct mm_struct *mm)
+{
+ flush_tlb_mm(mm);
+}
+
+#elif defined(CONFIG_PPC_STD_MMU_64)
+
+#define MMU_NO_CONTEXT 0
+
+/*
+ * TLB flushing for 64-bit hash-MMU CPUs
+ */
+
+#include <linux/percpu.h>
+#include <asm/page.h>
+
+#define PPC64_TLB_BATCH_NR 192
+
+struct ppc64_tlb_batch {
+ int active;
+ unsigned long index;
+ struct mm_struct *mm;
+ real_pte_t pte[PPC64_TLB_BATCH_NR];
+ unsigned long vpn[PPC64_TLB_BATCH_NR];
+ unsigned int psize;
+ int ssize;
+};
+DECLARE_PER_CPU(struct ppc64_tlb_batch, ppc64_tlb_batch);
+
+extern void __flush_tlb_pending(struct ppc64_tlb_batch *batch);
+
+#define __HAVE_ARCH_ENTER_LAZY_MMU_MODE
+
+static inline void arch_enter_lazy_mmu_mode(void)
+{
+ struct ppc64_tlb_batch *batch = this_cpu_ptr(&ppc64_tlb_batch);
+
+ batch->active = 1;
+}
+
+static inline void arch_leave_lazy_mmu_mode(void)
+{
+ struct ppc64_tlb_batch *batch = this_cpu_ptr(&ppc64_tlb_batch);
+
+ if (batch->index)
+ __flush_tlb_pending(batch);
+ batch->active = 0;
+}
+
+#define arch_flush_lazy_mmu_mode() do {} while (0)
+
+
+extern void flush_hash_page(unsigned long vpn, real_pte_t pte, int psize,
+ int ssize, unsigned long flags);
+extern void flush_hash_range(unsigned long number, int local);
+extern void flush_hash_hugepage(unsigned long vsid, unsigned long addr,
+ pmd_t *pmdp, unsigned int psize, int ssize,
+ unsigned long flags);
+
+static inline void local_flush_tlb_mm(struct mm_struct *mm)
+{
+}
+
+static inline void flush_tlb_mm(struct mm_struct *mm)
+{
+}
+
+static inline void local_flush_tlb_page(struct vm_area_struct *vma,
+ unsigned long vmaddr)
+{
+}
+
+static inline void flush_tlb_page(struct vm_area_struct *vma,
+ unsigned long vmaddr)
+{
+}
+
+static inline void flush_tlb_page_nohash(struct vm_area_struct *vma,
+ unsigned long vmaddr)
+{
+}
+
+static inline void flush_tlb_range(struct vm_area_struct *vma,
+ unsigned long start, unsigned long end)
+{
+}
+
+static inline void flush_tlb_kernel_range(unsigned long start,
+ unsigned long end)
+{
+}
+
+/* Private function for use by PCI IO mapping code */
+extern void __flush_hash_table_range(struct mm_struct *mm, unsigned long start,
+ unsigned long end);
+extern void flush_tlb_pmd_range(struct mm_struct *mm, pmd_t *pmd,
+ unsigned long addr);
+#else
+#error Unsupported MMU type
+#endif
+
+#endif /*__KERNEL__ */
+#endif /* _ASM_POWERPC_TLBFLUSH_H */
Code Review / kvmfornfv.git / blobdiff