1 files changed, 62 insertions, 0 deletions

diff --git a/include/asm-mips/bcache.h b/include/asm-mips/bcache.h
new file mode 100644
index 000000000000..446102b34f4e
--- /dev/null
+++ b/include/asm-mips/bcache.h
@@ -0,0 +1,62 @@
+/*
+ * 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) 1997, 1999 by Ralf Baechle
+ * Copyright (c) 1999 Silicon Graphics, Inc.
+ */
+#ifndef _ASM_BCACHE_H
+#define _ASM_BCACHE_H
+
+#include <linux/config.h>
+
+/* Some R4000 / R4400 / R4600 / R5000 machines may have a non-dma-coherent,
+   chipset implemented caches.  On machines with other CPUs the CPU does the
+   cache thing itself. */
+struct bcache_ops {
+        void (*bc_enable)(void);
+        void (*bc_disable)(void);
+        void (*bc_wback_inv)(unsigned long page, unsigned long size);
+        void (*bc_inv)(unsigned long page, unsigned long size);
+};
+
+extern void indy_sc_init(void);
+extern void sni_pcimt_sc_init(void);
+
+#ifdef CONFIG_BOARD_SCACHE
+
+extern struct bcache_ops *bcops;
+
+static inline void bc_enable(void)
+{
+        bcops->bc_enable();
+}
+
+static inline void bc_disable(void)
+{
+        bcops->bc_disable();
+}
+
+static inline void bc_wback_inv(unsigned long page, unsigned long size)
+{
+        bcops->bc_wback_inv(page, size);
+}
+
+static inline void bc_inv(unsigned long page, unsigned long size)
+{
+        bcops->bc_inv(page, size);
+}
+
+#else /* !defined(CONFIG_BOARD_SCACHE) */
+
+/* Not R4000 / R4400 / R4600 / R5000.  */
+
+#define bc_enable() do { } while (0)
+#define bc_disable() do { } while (0)
+#define bc_wback_inv(page, size) do { } while (0)
+#define bc_inv(page, size) do { } while (0)
+
+#endif /* !defined(CONFIG_BOARD_SCACHE) */
+
+#endif /* _ASM_BCACHE_H */