aboutsummaryrefslogtreecommitdiff
path: root/include/asm-v850/cacheflush.h
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-v850/cacheflush.h
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/asm-v850/cacheflush.h')
-rw-r--r--include/asm-v850/cacheflush.h69
1 files changed, 69 insertions, 0 deletions
diff --git a/include/asm-v850/cacheflush.h b/include/asm-v850/cacheflush.h
new file mode 100644
index 00000000000..e1a87f82f1a
--- /dev/null
+++ b/include/asm-v850/cacheflush.h
@@ -0,0 +1,69 @@
+/*
+ * include/asm-v850/cacheflush.h
+ *
+ * Copyright (C) 2001,02,03 NEC Electronics Corporation
+ * Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org>
+ *
+ * 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.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#ifndef __V850_CACHEFLUSH_H__
+#define __V850_CACHEFLUSH_H__
+
+/* Somebody depends on this; sigh... */
+#include <linux/mm.h>
+
+#include <asm/machdep.h>
+
+
+/* The following are all used by the kernel in ways that only affect
+ systems with MMUs, so we don't need them. */
+#define flush_cache_all() ((void)0)
+#define flush_cache_mm(mm) ((void)0)
+#define flush_cache_range(vma, start, end) ((void)0)
+#define flush_cache_page(vma, vmaddr, pfn) ((void)0)
+#define flush_dcache_page(page) ((void)0)
+#define flush_dcache_mmap_lock(mapping) ((void)0)
+#define flush_dcache_mmap_unlock(mapping) ((void)0)
+#define flush_cache_vmap(start, end) ((void)0)
+#define flush_cache_vunmap(start, end) ((void)0)
+
+#ifdef CONFIG_NO_CACHE
+
+/* Some systems have no cache at all, in which case we don't need these
+ either. */
+#define flush_icache() ((void)0)
+#define flush_icache_range(start, end) ((void)0)
+#define flush_icache_page(vma,pg) ((void)0)
+#define flush_icache_user_range(vma,pg,adr,len) ((void)0)
+#define flush_cache_sigtramp(vaddr) ((void)0)
+
+#else /* !CONFIG_NO_CACHE */
+
+struct page;
+struct mm_struct;
+struct vm_area_struct;
+
+/* Otherwise, somebody had better define them. */
+extern void flush_icache (void);
+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_icache_user_range (struct vm_area_struct *vma,
+ struct page *page,
+ unsigned long adr, int len);
+extern void flush_cache_sigtramp (unsigned long addr);
+
+#endif /* CONFIG_NO_CACHE */
+
+#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
+do { memcpy(dst, src, len); \
+ flush_icache_user_range(vma, page, vaddr, len); \
+} while (0)
+#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
+ memcpy(dst, src, len)
+
+#endif /* __V850_CACHEFLUSH_H__ */