aboutsummaryrefslogblamecommitdiffstats
path: root/arch/x86/include/asm/microcode.h
blob: ef51b501e22a6e53bf4ae7e2d9e2566760f72ee1 (plain) (tree)
1
2
3
4
5
6
7
8
9

                            
 




                         
 
              
 

                                                         
                      

                                                                     
 

                                                          
 
                                             








                                                                      

  
                       


                                        
  

                                              

















                                                                      
                                 
#ifndef _ASM_X86_MICROCODE_H
#define _ASM_X86_MICROCODE_H

struct cpu_signature {
	unsigned int sig;
	unsigned int pf;
	unsigned int rev;
};

struct device;

enum ucode_state { UCODE_ERROR, UCODE_OK, UCODE_NFOUND };

struct microcode_ops {
	enum ucode_state (*request_microcode_user) (int cpu,
				const void __user *buf, size_t size);

	enum ucode_state (*request_microcode_fw) (int cpu,
				struct device *device);

	void (*microcode_fini_cpu) (int cpu);

	/*
	 * The generic 'microcode_core' part guarantees that
	 * the callbacks below run on a target cpu when they
	 * are being called.
	 * See also the "Synchronization" section in microcode_core.c.
	 */
	int (*apply_microcode) (int cpu);
	int (*collect_cpu_info) (int cpu, struct cpu_signature *csig);
};

struct ucode_cpu_info {
	struct cpu_signature	cpu_sig;
	int			valid;
	void			*mc;
};
extern struct ucode_cpu_info ucode_cpu_info[];

#ifdef CONFIG_MICROCODE_INTEL
extern struct microcode_ops * __init init_intel_microcode(void);
#else
static inline struct microcode_ops * __init init_intel_microcode(void)
{
	return NULL;
}
#endif /* CONFIG_MICROCODE_INTEL */

#ifdef CONFIG_MICROCODE_AMD
extern struct microcode_ops * __init init_amd_microcode(void);
#else
static inline struct microcode_ops * __init init_amd_microcode(void)
{
	return NULL;
}
#endif

#endif /* _ASM_X86_MICROCODE_H */