arch/x86/lib/cpu.c

   1 #include <linux/module.h>
   2
   3 unsigned int x86_family(unsigned int sig)
   4 {
   5         unsigned int x86;
   6
   7         x86 = (sig >> 8) & 0xf;
   8
   9         if (x86 == 0xf)
  10                 x86 += (sig >> 20) & 0xff;
  11
  12         return x86;
  13 }
  14 EXPORT_SYMBOL_GPL(x86_family);
  15
  16 unsigned int x86_model(unsigned int sig)
  17 {
  18         unsigned int fam, model;
  19
  20          fam = x86_family(sig);
  21
  22         model = (sig >> 4) & 0xf;
  23
  24         if (fam >= 0x6)
  25                 model += ((sig >> 16) & 0xf) << 4;
  26
  27         return model;
  28 }
  29 EXPORT_SYMBOL_GPL(x86_model);
  30
  31 unsigned int x86_stepping(unsigned int sig)
  32 {
  33         return sig & 0xf;
  34 }
  35 EXPORT_SYMBOL_GPL(x86_stepping);