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1#ifndef _ASM_X86_MICROCODE_H
2#define _ASM_X86_MICROCODE_H
3
4struct cpu_signature {
5 unsigned int sig;
6 unsigned int pf;
7 unsigned int rev;
8};
9
10struct device;
11
12enum ucode_state { UCODE_ERROR, UCODE_OK, UCODE_NFOUND };
13
14struct 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
35struct ucode_cpu_info {
36 struct cpu_signature cpu_sig;
37 int valid;
38 void *mc;
39};
40extern struct ucode_cpu_info ucode_cpu_info[];
41
42#ifdef CONFIG_MICROCODE_INTEL
43extern struct microcode_ops * __init init_intel_microcode(void);
44#else
45static 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
52extern struct microcode_ops * __init init_amd_microcode(void);
53#else
54static inline struct microcode_ops * __init init_amd_microcode(void)
55{
56 return NULL;
57}
58#endif
59
60#endif /* _ASM_X86_MICROCODE_H */