1 /*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2009 Wind River Systems,
7 * written by Ralf Baechle <ralf@linux-mips.org>
8 */
9 #ifndef __ASM_COP2_H
10 #define __ASM_COP2_H
11
12 #include <linux/notifier.h>
13
14 #if defined(CONFIG_CPU_CAVIUM_OCTEON)
15
16 extern void octeon_cop2_save(struct octeon_cop2_state *);
17 extern void octeon_cop2_restore(struct octeon_cop2_state *);
18
19 #define cop2_save(r) octeon_cop2_save(&(r)->thread.cp2)
20 #define cop2_restore(r) octeon_cop2_restore(&(r)->thread.cp2)
21
22 #define cop2_present 1
23 #define cop2_lazy_restore 1
24
25 #elif defined(CONFIG_CPU_LOONGSON64)
26
27 #define cop2_present 1
28 #define cop2_lazy_restore 1
29 #define cop2_save(r) do { (void)(r); } while (0)
30 #define cop2_restore(r) do { (void)(r); } while (0)
31
32 #else
33
34 #define cop2_present 0
35 #define cop2_lazy_restore 0
36 #define cop2_save(r) do { (void)(r); } while (0)
37 #define cop2_restore(r) do { (void)(r); } while (0)
38 #endif
39
40 enum cu2_ops {
41 CU2_EXCEPTION,
42 CU2_LWC2_OP,
43 CU2_LDC2_OP,
44 CU2_SWC2_OP,
45 CU2_SDC2_OP,
46 };
47
48 extern int register_cu2_notifier(struct notifier_block *nb);
49 extern int cu2_notifier_call_chain(unsigned long val, void *v);
50
51 #define cu2_notifier(fn, pri) \
52 ({ \
53 static struct notifier_block fn##_nb = { \
54 .notifier_call = fn, \
55 .priority = pri \
56 }; \
57 \
58 register_cu2_notifier(&fn##_nb); \
59 })
60
61 #endif /* __ASM_COP2_H */
62
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