summaryrefslogtreecommitdiffstats
path: root/arch/mips/include/asm/cop2.h
blob: 51f80bd36fcc457a46782bc4266241d4de34ee2c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
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 { (r); } while (0)
#define cop2_restore(r)		do { (r); } while (0)

#else

#define cop2_present		0
#define cop2_lazy_restore	0
#define cop2_save(r)		do { (r); } while (0)
#define cop2_restore(r)		do { (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 */
OpenPOWER on IntegriCloud