arch/x86/lib/cpu.c

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