1 files changed, 105 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/cacheflush.h b/arch/blackfin/include/asm/cacheflush.h
new file mode 100644
index 00000000000..4403415583f
--- /dev/null
+++ b/arch/blackfin/include/asm/cacheflush.h
@@ -0,0 +1,105 @@
+/*
+ * File:         include/asm-blackfin/cacheflush.h
+ * Based on:	 include/asm-m68knommu/cacheflush.h
+ * Author:       LG Soft India
+ *               Copyright (C) 2004 Analog Devices Inc.
+ * Created:      Tue Sep 21 2004
+ * Description:  Blackfin low-level cache routines adapted from the i386
+ * 		 and PPC versions by Greg Ungerer (gerg@snapgear.com)
+ *
+ * Modified:
+ *
+ * Bugs:         Enter bugs at http://blackfin.uclinux.org/
+ *
+ * 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, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.
+ * If not, write to the Free Software Foundation,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef _BLACKFIN_CACHEFLUSH_H
+#define _BLACKFIN_CACHEFLUSH_H
+
+extern void blackfin_icache_dcache_flush_range(unsigned long start_address, unsigned long end_address);
+extern void blackfin_icache_flush_range(unsigned long start_address, unsigned long end_address);
+extern void blackfin_dcache_flush_range(unsigned long start_address, unsigned long end_address);
+extern void blackfin_dcache_invalidate_range(unsigned long start_address, unsigned long end_address);
+extern void blackfin_dflush_page(void *page);
+
+#define flush_dcache_mmap_lock(mapping)		do { } while (0)
+#define flush_dcache_mmap_unlock(mapping)	do { } while (0)
+#define flush_cache_mm(mm)			do { } while (0)
+#define flush_cache_range(vma, start, end)	do { } while (0)
+#define flush_cache_page(vma, vmaddr)		do { } while (0)
+#define flush_cache_vmap(start, end)		do { } while (0)
+#define flush_cache_vunmap(start, end)		do { } while (0)
+
+static inline void flush_icache_range(unsigned start, unsigned end)
+{
+#if defined(CONFIG_BFIN_DCACHE) && defined(CONFIG_BFIN_ICACHE)
+
+# if defined(CONFIG_BFIN_WT)
+	blackfin_icache_flush_range((start), (end));
+# else
+	blackfin_icache_dcache_flush_range((start), (end));
+# endif
+
+#else
+
+# if defined(CONFIG_BFIN_ICACHE)
+	blackfin_icache_flush_range((start), (end));
+# endif
+# if defined(CONFIG_BFIN_DCACHE)
+	blackfin_dcache_flush_range((start), (end));
+# endif
+
+#endif
+}
+
+#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
+do { memcpy(dst, src, len); \
+     flush_icache_range ((unsigned) (dst), (unsigned) (dst) + (len)); \
+} while (0)
+#define copy_from_user_page(vma, page, vaddr, dst, src, len)	memcpy(dst, src, len)
+
+#if defined(CONFIG_BFIN_DCACHE)
+# define invalidate_dcache_range(start,end)	blackfin_dcache_invalidate_range((start), (end))
+#else
+# define invalidate_dcache_range(start,end)	do { } while (0)
+#endif
+#if defined(CONFIG_BFIN_DCACHE) && defined(CONFIG_BFIN_WB)
+# define flush_dcache_range(start,end)		blackfin_dcache_flush_range((start), (end))
+# define flush_dcache_page(page)			blackfin_dflush_page(page_address(page))
+#else
+# define flush_dcache_range(start,end)		do { } while (0)
+# define flush_dcache_page(page)			do { } while (0)
+#endif
+
+extern unsigned long reserved_mem_dcache_on;
+extern unsigned long reserved_mem_icache_on;
+
+static inline int bfin_addr_dcachable(unsigned long addr)
+{
+#ifdef CONFIG_BFIN_DCACHE
+	if (addr < (_ramend - DMA_UNCACHED_REGION))
+		return 1;
+#endif
+
+	if (reserved_mem_dcache_on &&
+		addr >= _ramend && addr < physical_mem_end)
+		return 1;
+
+	return 0;
+}
+
+#endif				/* _BLACKFIN_ICACHEFLUSH_H */