*/
#ifdef __KERNEL__
-#include <linux/config.h>
-
struct mm_struct;
+struct vm_area_struct;
+
+#if defined(CONFIG_4xx) || defined(CONFIG_8xx) || defined(CONFIG_FSL_BOOKE)
+/*
+ * 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
+ */
+
+extern void _tlbie(unsigned long address);
+
+#if defined(CONFIG_40x) || defined(CONFIG_8xx)
+#define _tlbia() asm volatile ("tlbia; sync" : : : "memory")
+#else /* CONFIG_44x || CONFIG_FSL_BOOKE */
+extern void _tlbia(void);
+#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();
+}
-#ifdef CONFIG_PPC64
+#elif defined(CONFIG_PPC32)
+/*
+ * TLB flushing for "classic" hash-MMMU 32-bit CPUs, 6xx, 7xx, 7xxx
+ */
+extern void _tlbie(unsigned long address);
+extern void _tlbia(void);
+
+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);
+
+#else
+/*
+ * TLB flushing for 64-bit has-MMU CPUs
+ */
#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;
- real_pte_t pte[PPC64_TLB_BATCH_NR];
- unsigned long vaddr[PPC64_TLB_BATCH_NR];
- unsigned int psize;
+ int active;
+ unsigned long index;
+ struct mm_struct *mm;
+ real_pte_t pte[PPC64_TLB_BATCH_NR];
+ unsigned long vaddr[PPC64_TLB_BATCH_NR];
+ unsigned int psize;
};
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)
+extern void hpte_need_flush(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, unsigned long pte, int huge);
+
+#define __HAVE_ARCH_ENTER_LAZY_MMU_MODE
+
+static inline void arch_enter_lazy_mmu_mode(void)
+{
+ struct ppc64_tlb_batch *batch = &__get_cpu_var(ppc64_tlb_batch);
+
+ batch->active = 1;
+}
+
+static inline void arch_leave_lazy_mmu_mode(void)
{
- struct ppc64_tlb_batch *batch = &get_cpu_var(ppc64_tlb_batch);
+ struct ppc64_tlb_batch *batch = &__get_cpu_var(ppc64_tlb_batch);
if (batch->index)
__flush_tlb_pending(batch);
- put_cpu_var(ppc64_tlb_batch);
+ batch->active = 0;
}
+#define arch_flush_lazy_mmu_mode() do {} while (0)
+
+
extern void flush_hash_page(unsigned long va, real_pte_t pte, int psize,
int local);
extern 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)
+ 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)
+ unsigned long start, unsigned long end)
{
- flush_tlb_pending();
}
static inline void flush_tlb_kernel_range(unsigned long start,
- unsigned long end)
+ 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 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);
+
/*
* 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)
+ unsigned long start, unsigned long end)
{
}
projects / powerpc.git / blobdiff