microcode.h 1.41 KB
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#ifndef _ASM_X86_MICROCODE_H
#define _ASM_X86_MICROCODE_H
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struct cpu_signature {
	unsigned int sig;
	unsigned int pf;
	unsigned int rev;
};
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struct device;
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enum ucode_state { UCODE_ERROR, UCODE_OK, UCODE_NFOUND };

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struct microcode_ops {
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	enum ucode_state (*request_microcode_user) (int cpu,
				const void __user *buf, size_t size);
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	enum ucode_state (*request_microcode_fw) (int cpu,
				struct device *device);
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	void (*microcode_fini_cpu) (int cpu);
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	/*
	 * 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);
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};

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

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#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);
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static inline void get_ucode_data(void *to, const u8 *from, size_t n)
{
	memcpy(to, from, n);
}

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

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#endif /* _ASM_X86_MICROCODE_H */