linux/arch/x86/include/asm/archrandom.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * This file is part of the Linux kernel.
 *
 * Copyright (c) 2011-2014, Intel Corporation
 * Authors: Fenghua Yu <[email protected]>,
 *          H. Peter Anvin <[email protected]>
 */

#ifndef ASM_X86_ARCHRANDOM_H
#define ASM_X86_ARCHRANDOM_H

#include <asm/processor.h>
#include <asm/cpufeature.h>

#define RDRAND_RETRY_LOOPS …

/* Unconditional execution of RDRAND and RDSEED */

static inline bool __must_check rdrand_long(unsigned long *v)
{ … }

static inline bool __must_check rdseed_long(unsigned long *v)
{ … }

/*
 * These are the generic interfaces; they must not be declared if the
 * stubs in <linux/random.h> are to be invoked.
 */

static inline size_t __must_check arch_get_random_longs(unsigned long *v, size_t max_longs)
{ … }

static inline size_t __must_check arch_get_random_seed_longs(unsigned long *v, size_t max_longs)
{ … }

#ifndef CONFIG_UML
void x86_init_rdrand(struct cpuinfo_x86 *c);
#endif

#endif /* ASM_X86_ARCHRANDOM_H */