1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __PARISC_SPECIAL_INSNS_H
3 #define __PARISC_SPECIAL_INSNS_H
4 
5 #define lpa(va)	({			\
6 	unsigned long pa;		\
7 	__asm__ __volatile__(		\
8 		"copy %%r0,%0\n\t"	\
9 		"lpa %%r0(%1),%0"	\
10 		: "=r" (pa)		\
11 		: "r" (va)		\
12 		: "memory"		\
13 	);				\
14 	pa;				\
15 })
16 
17 #define lpa_user(va)	({		\
18 	unsigned long pa;		\
19 	__asm__ __volatile__(		\
20 		"copy %%r0,%0\n\t"	\
21 		"lpa %%r0(%%sr3,%1),%0"	\
22 		: "=r" (pa)		\
23 		: "r" (va)		\
24 		: "memory"		\
25 	);				\
26 	pa;				\
27 })
28 
29 #define mfctl(reg)	({		\
30 	unsigned long cr;		\
31 	__asm__ __volatile__(		\
32 		"mfctl " #reg ",%0" :	\
33 		 "=r" (cr)		\
34 	);				\
35 	cr;				\
36 })
37 
38 #define mtctl(gr, cr) \
39 	__asm__ __volatile__("mtctl %0,%1" \
40 		: /* no outputs */ \
41 		: "r" (gr), "i" (cr) : "memory")
42 
43 /* these are here to de-mystefy the calling code, and to provide hooks */
44 /* which I needed for debugging EIEM problems -PB */
45 #define get_eiem() mfctl(15)
set_eiem(unsigned long val)46 static inline void set_eiem(unsigned long val)
47 {
48 	mtctl(val, 15);
49 }
50 
51 #define mfsp(reg)	({		\
52 	unsigned long cr;		\
53 	__asm__ __volatile__(		\
54 		"mfsp " #reg ",%0" :	\
55 		 "=r" (cr)		\
56 	);				\
57 	cr;				\
58 })
59 
60 #define mtsp(val, cr) \
61 	{ if (__builtin_constant_p(val) && ((val) == 0)) \
62 	 __asm__ __volatile__("mtsp %%r0,%0" : : "i" (cr) : "memory"); \
63 	else \
64 	 __asm__ __volatile__("mtsp %0,%1" \
65 		: /* no outputs */ \
66 		: "r" (val), "i" (cr) : "memory"); }
67 
68 #endif /* __PARISC_SPECIAL_INSNS_H */
69