arch/x86/include/asm/microcode.h

   1 #ifndef _ASM_X86_MICROCODE_H
   2 #define _ASM_X86_MICROCODE_H
   3
   4 struct cpu_signature {
   5         unsigned int sig;
   6         unsigned int pf;
   7         unsigned int rev;
   8 };
   9
  10 struct device;
  11
  12 enum ucode_state { UCODE_ERROR, UCODE_OK, UCODE_NFOUND };
  13
  14 struct microcode_ops {
  15         void (*init)(struct device *device);
  16         void (*fini)(void);
  17         enum ucode_state (*request_microcode_user) (int cpu,
  18                                 const void __user *buf, size_t size);
  19
  20         enum ucode_state (*request_microcode_fw) (int cpu,
  21                                 struct device *device);
  22
  23         void (*microcode_fini_cpu) (int cpu);
  24
  25         /*
  26          * The generic 'microcode_core' part guarantees that
  27          * the callbacks below run on a target cpu when they
  28          * are being called.
  29          * See also the "Synchronization" section in microcode_core.c.
  30          */
  31         int (*apply_microcode) (int cpu);
  32         int (*collect_cpu_info) (int cpu, struct cpu_signature *csig);
  33 };
  34
  35 struct ucode_cpu_info {
  36         struct cpu_signature    cpu_sig;
  37         int                     valid;
  38         void                    *mc;
  39 };
  40 extern struct ucode_cpu_info ucode_cpu_info[];
  41
  42 #ifdef CONFIG_MICROCODE_INTEL
  43 extern struct microcode_ops * __init init_intel_microcode(void);
  44 #else
  45 static inline struct microcode_ops * __init init_intel_microcode(void)
  46 {
  47         return NULL;
  48 }
  49 #endif /* CONFIG_MICROCODE_INTEL */
  50
  51 #ifdef CONFIG_MICROCODE_AMD
  52 extern struct microcode_ops * __init init_amd_microcode(void);
  53 #else
  54 static inline struct microcode_ops * __init init_amd_microcode(void)
  55 {
  56         return NULL;
  57 }
  58 #endif
  59
  60 #endif /* _ASM_X86_MICROCODE_H */