Initial import

1 files changed, 72 insertions, 0 deletions

diff --git a/arch/mips/include/asm/cop2.h b/arch/mips/include/asm/cop2.h
new file mode 100644
index 000000000..63b3468ed
--- /dev/null
+++ b/arch/mips/include/asm/cop2.h
@@ -0,0 +1,72 @@
+/*
+ * 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) 2009 Wind River Systems,
+ *   written by Ralf Baechle <ralf@linux-mips.org>
+ */
+#ifndef __ASM_COP2_H
+#define __ASM_COP2_H
+
+#include <linux/notifier.h>
+
+#if defined(CONFIG_CPU_CAVIUM_OCTEON)
+
+extern void octeon_cop2_save(struct octeon_cop2_state *);
+extern void octeon_cop2_restore(struct octeon_cop2_state *);
+
+#define cop2_save(r)		octeon_cop2_save(&(r)->thread.cp2)
+#define cop2_restore(r)		octeon_cop2_restore(&(r)->thread.cp2)
+
+#define cop2_present		1
+#define cop2_lazy_restore	1
+
+#elif defined(CONFIG_CPU_XLP)
+
+extern void nlm_cop2_save(struct nlm_cop2_state *);
+extern void nlm_cop2_restore(struct nlm_cop2_state *);
+
+#define cop2_save(r)		nlm_cop2_save(&(r)->thread.cp2)
+#define cop2_restore(r)		nlm_cop2_restore(&(r)->thread.cp2)
+
+#define cop2_present		1
+#define cop2_lazy_restore	0
+
+#elif defined(CONFIG_CPU_LOONGSON3)
+
+#define cop2_present		1
+#define cop2_lazy_restore	1
+#define cop2_save(r)		do { (void)(r); } while (0)
+#define cop2_restore(r)		do { (void)(r); } while (0)
+
+#else
+
+#define cop2_present		0
+#define cop2_lazy_restore	0
+#define cop2_save(r)		do { (void)(r); } while (0)
+#define cop2_restore(r)		do { (void)(r); } while (0)
+#endif
+
+enum cu2_ops {
+	CU2_EXCEPTION,
+	CU2_LWC2_OP,
+	CU2_LDC2_OP,
+	CU2_SWC2_OP,
+	CU2_SDC2_OP,
+};
+
+extern int register_cu2_notifier(struct notifier_block *nb);
+extern int cu2_notifier_call_chain(unsigned long val, void *v);
+
+#define cu2_notifier(fn, pri)						\
+({									\
+	static struct notifier_block fn##_nb = {			\
+		.notifier_call = fn,					\
+		.priority = pri						\
+	};								\
+									\
+	register_cu2_notifier(&fn##_nb);				\
+})
+
+#endif /* __ASM_COP2_H */