LXR linux/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
   9static inline bool __must_check arch_get_random_long(unsigned long *v)
  10{
  11        return false;
  12}
  13
  14static inline bool __must_check arch_get_random_int(unsigned int *v)
  15{
  16        return false;
  17}
  18
  19static 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
  27static 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
  41int powernv_hwrng_present(void);
  42int powernv_get_random_long(unsigned long *v);
  43int powernv_get_random_real_mode(unsigned long *v);
  44#else
  45static inline int powernv_hwrng_present(void) { return 0; }
  46static inline int powernv_get_random_real_mode(unsigned long *v) { return 0; }
  47#endif
  48
  49#endif /* _ASM_POWERPC_ARCHRANDOM_H */
  50