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[karo-tx-linux.git] / arch / mips / include / asm / cop2.h
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)
20 #define cop2_restore(r)         octeon_cop2_restore(r)
21
22 #define cop2_present            1
23 #define cop2_lazy_restore       1
24
25 #elif defined(CONFIG_CPU_XLP)
26
27 extern void nlm_cop2_save(struct nlm_cop2_state *);
28 extern void nlm_cop2_restore(struct nlm_cop2_state *);
29 #define cop2_save(r)            nlm_cop2_save(r)
30 #define cop2_restore(r)         nlm_cop2_restore(r)
31
32 #define cop2_present            1
33 #define cop2_lazy_restore       0
34
35 #else
36
37 #define cop2_present            0
38 #define cop2_lazy_restore       0
39 #define cop2_save(r)
40 #define cop2_restore(r)
41 #endif
42
43 enum cu2_ops {
44         CU2_EXCEPTION,
45         CU2_LWC2_OP,
46         CU2_LDC2_OP,
47         CU2_SWC2_OP,
48         CU2_SDC2_OP,
49 };
50
51 extern int register_cu2_notifier(struct notifier_block *nb);
52 extern int cu2_notifier_call_chain(unsigned long val, void *v);
53
54 #define cu2_notifier(fn, pri)                                           \
55 ({                                                                      \
56         static struct notifier_block fn##_nb = {                        \
57                 .notifier_call = fn,                                    \
58                 .priority = pri                                         \
59         };                                                              \
60                                                                         \
61         register_cu2_notifier(&fn##_nb);                                \
62 })
63
64 #endif /* __ASM_COP2_H */