1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * CPU feature definitions for module loading, used by
4 * module_cpu_feature_match(), see asm/cputable.h for powerpc CPU features.
5 *
6 * Copyright 2016 Alastair D'Silva, IBM Corporation.
7 */
8
9#ifndef __ASM_POWERPC_CPUFEATURE_H
10#define __ASM_POWERPC_CPUFEATURE_H
11
12#include <asm/cputable.h>
13
14/* Keep these in step with powerpc/include/asm/cputable.h */
15#define MAX_CPU_FEATURES (2 * 32)
16
17/*
18 * Currently we don't have a need for any of the feature bits defined in
19 * cpu_user_features. When we do, they should be defined such as:
20 *
21 * #define PPC_MODULE_FEATURE_32 (ilog2(PPC_FEATURE_32))
22 */
23
24#define PPC_MODULE_FEATURE_VEC_CRYPTO			(32 + ilog2(PPC_FEATURE2_VEC_CRYPTO))
25#define PPC_MODULE_FEATURE_P10				(32 + ilog2(PPC_FEATURE2_ARCH_3_1))
26
27#define cpu_feature(x)		(x)
28
29static inline bool cpu_have_feature(unsigned int num)
30{
31	if (num < 32)
32		return !!(cur_cpu_spec->cpu_user_features & 1UL << num);
33	else
34		return !!(cur_cpu_spec->cpu_user_features2 & 1UL << (num - 32));
35}
36
37#endif /* __ASM_POWERPC_CPUFEATURE_H */
38