[linux-2.6-block.git] / arch / powerpc / include / asm / cpufeature.h

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * CPU feature definitions for module loading, used by
 * module_cpu_feature_match(), see asm/cputable.h for powerpc CPU features.
 *
 * Copyright 2016 Alastair D'Silva, IBM Corporation.
 */

#ifndef __ASM_POWERPC_CPUFEATURE_H
#define __ASM_POWERPC_CPUFEATURE_H

#include <asm/cputable.h>

/* Keep these in step with powerpc/include/asm/cputable.h */
#define MAX_CPU_FEATURES (2 * 32)

/*
 * Currently we don't have a need for any of the feature bits defined in
 * cpu_user_features. When we do, they should be defined such as:
 *
 * #define PPC_MODULE_FEATURE_32 (ilog2(PPC_FEATURE_32))
 */

#define PPC_MODULE_FEATURE_VEC_CRYPTO			(32 + ilog2(PPC_FEATURE2_VEC_CRYPTO))

#define cpu_feature(x)		(x)

static inline bool cpu_have_feature(unsigned int num)
{
	if (num < 32)
		return !!(cur_cpu_spec->cpu_user_features & 1UL << num);
	else
		return !!(cur_cpu_spec->cpu_user_features2 & 1UL << (num - 32));
}

#endif /* __ASM_POWERPC_CPUFEATURE_H */
Commit	Line	Data
2874c5fd	1	/* SPDX-License-Identifier: GPL-2.0-or-later */
4a120276 AS	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.
4a120276 AS	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
	26	#define cpu_feature(x) (x)
	27
	28	static inline bool cpu_have_feature(unsigned int num)
	29	{
	30	if (num < 32)
	31	return !!(cur_cpu_spec->cpu_user_features & 1UL << num);
	32	else
	33	return !!(cur_cpu_spec->cpu_user_features2 & 1UL << (num - 32));
	34	}
	35
	36	#endif /* __ASM_POWERPC_CPUFEATURE_H */