arch/powerpc/include/asm/archrandom.h

   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_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 */