cpu.c 624 B

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  1. // SPDX-License-Identifier: GPL-2.0-only
  2. #include <linux/types.h>
  3. #include <linux/export.h>
  4. #include <asm/cpu.h>
  5. unsigned int x86_family(unsigned int sig)
  6. {
  7. unsigned int x86;
  8. x86 = (sig >> 8) & 0xf;
  9. if (x86 == 0xf)
  10. x86 += (sig >> 20) & 0xff;
  11. return x86;
  12. }
  13. EXPORT_SYMBOL_GPL(x86_family);
  14. unsigned int x86_model(unsigned int sig)
  15. {
  16. unsigned int fam, model;
  17. fam = x86_family(sig);
  18. model = (sig >> 4) & 0xf;
  19. if (fam >= 0x6)
  20. model += ((sig >> 16) & 0xf) << 4;
  21. return model;
  22. }
  23. EXPORT_SYMBOL_GPL(x86_model);
  24. unsigned int x86_stepping(unsigned int sig)
  25. {
  26. return sig & 0xf;
  27. }
  28. EXPORT_SYMBOL_GPL(x86_stepping);