MIPS: Move cop2 save/restore to switch_to()
Move the common code for saving and restoring platform specific COP2
registers to switch_to(). This will make supporting new platforms (like
Netlogic XLP) easier.
The platform specific COP2 definitions are to be specified in
asm/processor.h and in asm/cop2.h.
Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Cc: ddaney.cavm@gmail.com
Patchwork: https://patchwork.linux-mips.org/patch/5411/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/include/asm/cop2.h b/arch/mips/include/asm/cop2.h
index 3532e2c..b17f38e 100644
--- a/arch/mips/include/asm/cop2.h
+++ b/arch/mips/include/asm/cop2.h
@@ -11,6 +11,25 @@
#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)
+#define cop2_restore(r) octeon_cop2_restore(r)
+
+#define cop2_present 1
+#define cop2_lazy_restore 1
+
+#else
+
+#define cop2_present 0
+#define cop2_lazy_restore 0
+#define cop2_save(r)
+#define cop2_restore(r)
+#endif
+
enum cu2_ops {
CU2_EXCEPTION,
CU2_LWC2_OP,