cpufeature.h 998 B

123456789101112131415161718192021222324252627282930313233343536
  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. #ifndef __ASM_POWERPC_CPUFEATURE_H
  9. #define __ASM_POWERPC_CPUFEATURE_H
  10. #include <asm/cputable.h>
  11. /* Keep these in step with powerpc/include/asm/cputable.h */
  12. #define MAX_CPU_FEATURES (2 * 32)
  13. /*
  14. * Currently we don't have a need for any of the feature bits defined in
  15. * cpu_user_features. When we do, they should be defined such as:
  16. *
  17. * #define PPC_MODULE_FEATURE_32 (ilog2(PPC_FEATURE_32))
  18. */
  19. #define PPC_MODULE_FEATURE_VEC_CRYPTO (32 + ilog2(PPC_FEATURE2_VEC_CRYPTO))
  20. #define cpu_feature(x) (x)
  21. static inline bool cpu_have_feature(unsigned int num)
  22. {
  23. if (num < 32)
  24. return !!(cur_cpu_spec->cpu_user_features & 1UL << num);
  25. else
  26. return !!(cur_cpu_spec->cpu_user_features2 & 1UL << (num - 32));
  27. }
  28. #endif /* __ASM_POWERPC_CPUFEATURE_H */