cpufeature.h 1.2 KB

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  1. /*
  2. * CPU feature definitions for module loading, used by
  3. * module_cpu_feature_match(), see asm/cputable.h for powerpc CPU features.
  4. *
  5. * Copyright 2016 Alastair D'Silva, IBM Corporation.
  6. *
  7. * This program is free software; you can redistribute it and/or
  8. * modify it under the terms of the GNU General Public License
  9. * as published by the Free Software Foundation; either version
  10. * 2 of the License, or (at your option) any later version.
  11. */
  12. #ifndef __ASM_POWERPC_CPUFEATURE_H
  13. #define __ASM_POWERPC_CPUFEATURE_H
  14. #include <asm/cputable.h>
  15. /* Keep these in step with powerpc/include/asm/cputable.h */
  16. #define MAX_CPU_FEATURES (2 * 32)
  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. #define PPC_MODULE_FEATURE_VEC_CRYPTO (32 + ilog2(PPC_FEATURE2_VEC_CRYPTO))
  24. #define cpu_feature(x) (x)
  25. static inline bool cpu_have_feature(unsigned int num)
  26. {
  27. if (num < 32)
  28. return !!(cur_cpu_spec->cpu_user_features & 1UL << num);
  29. else
  30. return !!(cur_cpu_spec->cpu_user_features2 & 1UL << (num - 32));
  31. }
  32. #endif /* __ASM_POWERPC_CPUFEATURE_H */