arch/x86/lib/cpu.c

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