summaryrefslogtreecommitdiff
path: root/arch/parisc/include/asm/cacheflush.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/parisc/include/asm/cacheflush.h')
-rw-r--r--arch/parisc/include/asm/cacheflush.h121
1 files changed, 121 insertions, 0 deletions
diff --git a/arch/parisc/include/asm/cacheflush.h b/arch/parisc/include/asm/cacheflush.h
new file mode 100644
index 000000000000..b7ca6dc7fddc
--- /dev/null
+++ b/arch/parisc/include/asm/cacheflush.h
@@ -0,0 +1,121 @@
+#ifndef _PARISC_CACHEFLUSH_H
+#define _PARISC_CACHEFLUSH_H
+
+#include <linux/mm.h>
+
+/* The usual comment is "Caches aren't brain-dead on the <architecture>".
+ * Unfortunately, that doesn't apply to PA-RISC. */
+
+/* Internal implementation */
+void flush_data_cache_local(void *); /* flushes local data-cache only */
+void flush_instruction_cache_local(void *); /* flushes local code-cache only */
+#ifdef CONFIG_SMP
+void flush_data_cache(void); /* flushes data-cache only (all processors) */
+void flush_instruction_cache(void); /* flushes i-cache only (all processors) */
+#else
+#define flush_data_cache() flush_data_cache_local(NULL)
+#define flush_instruction_cache() flush_instruction_cache_local(NULL)
+#endif
+
+#define flush_cache_dup_mm(mm) flush_cache_mm(mm)
+
+void flush_user_icache_range_asm(unsigned long, unsigned long);
+void flush_kernel_icache_range_asm(unsigned long, unsigned long);
+void flush_user_dcache_range_asm(unsigned long, unsigned long);
+void flush_kernel_dcache_range_asm(unsigned long, unsigned long);
+void flush_kernel_dcache_page_asm(void *);
+void flush_kernel_icache_page(void *);
+void flush_user_dcache_page(unsigned long);
+void flush_user_icache_page(unsigned long);
+void flush_user_dcache_range(unsigned long, unsigned long);
+void flush_user_icache_range(unsigned long, unsigned long);
+
+/* Cache flush operations */
+
+void flush_cache_all_local(void);
+void flush_cache_all(void);
+void flush_cache_mm(struct mm_struct *mm);
+
+#define flush_kernel_dcache_range(start,size) \
+ flush_kernel_dcache_range_asm((start), (start)+(size));
+
+#define flush_cache_vmap(start, end) flush_cache_all()
+#define flush_cache_vunmap(start, end) flush_cache_all()
+
+extern void flush_dcache_page(struct page *page);
+
+#define flush_dcache_mmap_lock(mapping) \
+ spin_lock_irq(&(mapping)->tree_lock)
+#define flush_dcache_mmap_unlock(mapping) \
+ spin_unlock_irq(&(mapping)->tree_lock)
+
+#define flush_icache_page(vma,page) do { \
+ flush_kernel_dcache_page(page); \
+ flush_kernel_icache_page(page_address(page)); \
+} while (0)
+
+#define flush_icache_range(s,e) do { \
+ flush_kernel_dcache_range_asm(s,e); \
+ flush_kernel_icache_range_asm(s,e); \
+} while (0)
+
+#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
+do { \
+ flush_cache_page(vma, vaddr, page_to_pfn(page)); \
+ memcpy(dst, src, len); \
+ flush_kernel_dcache_range_asm((unsigned long)dst, (unsigned long)dst + len); \
+} while (0)
+
+#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
+do { \
+ flush_cache_page(vma, vaddr, page_to_pfn(page)); \
+ memcpy(dst, src, len); \
+} while (0)
+
+void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn);
+void flush_cache_range(struct vm_area_struct *vma,
+ unsigned long start, unsigned long end);
+
+#define ARCH_HAS_FLUSH_ANON_PAGE
+static inline void
+flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr)
+{
+ if (PageAnon(page))
+ flush_user_dcache_page(vmaddr);
+}
+
+#define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE
+void flush_kernel_dcache_page_addr(void *addr);
+static inline void flush_kernel_dcache_page(struct page *page)
+{
+ flush_kernel_dcache_page_addr(page_address(page));
+}
+
+#ifdef CONFIG_DEBUG_RODATA
+void mark_rodata_ro(void);
+#endif
+
+#ifdef CONFIG_PA8X00
+/* Only pa8800, pa8900 needs this */
+#define ARCH_HAS_KMAP
+
+void kunmap_parisc(void *addr);
+
+static inline void *kmap(struct page *page)
+{
+ might_sleep();
+ return page_address(page);
+}
+
+#define kunmap(page) kunmap_parisc(page_address(page))
+
+#define kmap_atomic(page, idx) page_address(page)
+
+#define kunmap_atomic(addr, idx) kunmap_parisc(addr)
+
+#define kmap_atomic_pfn(pfn, idx) page_address(pfn_to_page(pfn))
+#define kmap_atomic_to_page(ptr) virt_to_page(ptr)
+#endif
+
+#endif /* _PARISC_CACHEFLUSH_H */
+