1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_POWERPC_ARCHRANDOM_H
3 #define _ASM_POWERPC_ARCHRANDOM_H
4 
5 #ifdef CONFIG_ARCH_RANDOM
6 
7 #include <asm/machdep.h>
8 
9 static inline int arch_get_random_long(unsigned long *v)
10 {
11 	return 0;
12 }
13 
14 static inline int arch_get_random_int(unsigned int *v)
15 {
16 	return 0;
17 }
18 
19 static inline int arch_get_random_seed_long(unsigned long *v)
20 {
21 	if (ppc_md.get_random_seed)
22 		return ppc_md.get_random_seed(v);
23 
24 	return 0;
25 }
26 static inline int arch_get_random_seed_int(unsigned int *v)
27 {
28 	unsigned long val;
29 	int rc;
30 
31 	rc = arch_get_random_seed_long(&val);
32 	if (rc)
33 		*v = val;
34 
35 	return rc;
36 }
37 
38 static inline int arch_has_random(void)
39 {
40 	return 0;
41 }
42 
43 static inline int arch_has_random_seed(void)
44 {
45 	return !!ppc_md.get_random_seed;
46 }
47 #endif /* CONFIG_ARCH_RANDOM */
48 
49 #ifdef CONFIG_PPC_POWERNV
50 int powernv_hwrng_present(void);
51 int powernv_get_random_long(unsigned long *v);
52 int powernv_get_random_real_mode(unsigned long *v);
53 #else
54 static inline int powernv_hwrng_present(void) { return 0; }
55 static inline int powernv_get_random_real_mode(unsigned long *v) { return 0; }
56 #endif
57 
58 #endif /* _ASM_POWERPC_ARCHRANDOM_H */
59