patch-2.4.22 linux-2.4.22/include/asm-mips/cacheflush.h

• Lines: 70
• Date: 2003-08-25 04:44:43.000000000 -0700
• Orig file: linux-2.4.21/include/asm-mips/cacheflush.h
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.21/include/asm-mips/cacheflush.h linux-2.4.22/include/asm-mips/cacheflush.h
@@ -0,0 +1,69 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1994, 95, 96, 97, 98, 99, 2000 by Ralf Baechle at alii
+ * Copyright (C) 1999 Silicon Graphics, Inc.
+ */
+#ifndef __ASM_CACHEFLUSH_H
+#define __ASM_CACHEFLUSH_H
+
+#include <linux/config.h>
+
+struct mm_struct;
+struct vm_area_struct;
+struct page;
+
+/* Cache flushing:
+ *
+ *  - flush_cache_all() flushes entire cache
+ *  - flush_cache_mm(mm) flushes the specified mm context's cache lines
+ *  - flush_cache_page(mm, vmaddr) flushes a single page
+ *  - flush_cache_range(mm, start, end) flushes a range of pages
+ *  - flush_page_to_ram(page) write back kernel page to ram
+ *  - flush_icache_range(start, end) flush a range of instructions
+ *
+ * MIPS specific flush operations:
+ *
+ *  - flush_cache_sigtramp() flush signal trampoline
+ *  - flush_icache_all() flush the entire instruction cache
+ *  - flush_data_cache_page() flushes a page from the data cache
+ */
+extern void (*_flush_cache_all)(void);
+extern void (*___flush_cache_all)(void);
+extern void (*_flush_cache_mm)(struct mm_struct *mm);
+extern void (*_flush_cache_range)(struct mm_struct *mm, unsigned long start,
+	unsigned long end);
+extern void (*_flush_cache_page)(struct vm_area_struct *vma,
+	unsigned long page);
+extern void flush_dcache_page(struct page * page);
+extern void (*_flush_icache_range)(unsigned long start, unsigned long end);
+extern void (*_flush_icache_page)(struct vm_area_struct *vma,
+	struct page *page);
+
+extern void (*_flush_cache_sigtramp)(unsigned long addr);
+extern void (*_flush_icache_all)(void);
+extern void (*_flush_data_cache_page)(unsigned long addr);
+
+#define flush_cache_all()		_flush_cache_all()
+#define __flush_cache_all()		___flush_cache_all()
+#define flush_cache_mm(mm)		_flush_cache_mm(mm)
+#define flush_cache_range(mm,start,end)	_flush_cache_range(mm,start,end)
+#define flush_cache_page(vma,page)	_flush_cache_page(vma, page)
+#define flush_page_to_ram(page)		do { } while (0)
+
+#define flush_icache_range(start, end)	_flush_icache_range(start,end)
+#define flush_icache_user_range(vma, page, addr, len) \
+					_flush_icache_page((vma), (page))
+#define flush_icache_page(vma, page) 	_flush_icache_page(vma, page)
+
+#define flush_cache_sigtramp(addr)	_flush_cache_sigtramp(addr)
+#define flush_data_cache_page(addr)	_flush_data_cache_page(addr)
+#ifdef CONFIG_VTAG_ICACHE
+#define flush_icache_all()		_flush_icache_all()
+#else
+#define flush_icache_all()		do { } while(0)
+#endif
+
+#endif /* __ASM_CACHEFLUSH_H */