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 bool __must_check arch_get_random_long(unsigned long *v)
  10 {
  11         return false;
  12 }
  13
  14 static inline bool __must_check arch_get_random_int(unsigned int *v)
  15 {
  16         return false;
  17 }
  18
  19 static inline bool __must_check 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 false;
  25 }
  26
  27 static inline bool __must_check arch_get_random_seed_int(unsigned int *v)
  28 {
  29         unsigned long val;
  30         bool rc;
  31
  32         rc = arch_get_random_seed_long(&val);
  33         if (rc)
  34                 *v = val;
  35
  36         return rc;
  37 }
  38 #endif /* CONFIG_ARCH_RANDOM */
  39
  40 #ifdef CONFIG_PPC_POWERNV
  41 int powernv_hwrng_present(void);
  42 int powernv_get_random_long(unsigned long *v);
  43 int powernv_get_random_real_mode(unsigned long *v);
  44 #else
  45 static inline int powernv_hwrng_present(void) { return 0; }
  46 static inline int powernv_get_random_real_mode(unsigned long *v) { return 0; }
  47 #endif
  48
  49 #endif /* _ASM_POWERPC_ARCHRANDOM_H */