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 enum ucode_state (*request_microcode_user) (int cpu,
16 const void __user *buf, size_t size);
17
18 enum ucode_state (*request_microcode_fw) (int cpu,
19 struct device *device);
20
21 void (*microcode_fini_cpu) (int cpu);
22
23 /*
24 * The generic 'microcode_core' part guarantees that
25 * the callbacks below run on a target cpu when they
26 * are being called.
27 * See also the "Synchronization" section in microcode_core.c.
28 */
29 int (*apply_microcode) (int cpu);
30 int (*collect_cpu_info) (int cpu, struct cpu_signature *csig);
31 };
32
33 struct ucode_cpu_info {
34 struct cpu_signature cpu_sig;
35 int valid;
36 void *mc;
37 };
38 extern struct ucode_cpu_info ucode_cpu_info[];
39
40 #ifdef CONFIG_MICROCODE_INTEL
41 extern struct microcode_ops * __init init_intel_microcode(void);
42 #else
init_intel_microcode(void)43 static inline struct microcode_ops * __init init_intel_microcode(void)
44 {
45 return NULL;
46 }
47 #endif /* CONFIG_MICROCODE_INTEL */
48
49 #ifdef CONFIG_MICROCODE_AMD
50 extern struct microcode_ops * __init init_amd_microcode(void);
51 extern void __exit exit_amd_microcode(void);
52
get_ucode_data(void * to,const u8 * from,size_t n)53 static inline void get_ucode_data(void *to, const u8 *from, size_t n)
54 {
55 memcpy(to, from, n);
56 }
57
58 #else
init_amd_microcode(void)59 static inline struct microcode_ops * __init init_amd_microcode(void)
60 {
61 return NULL;
62 }
exit_amd_microcode(void)63 static inline void __exit exit_amd_microcode(void) {}
64 #endif
65
66 #endif /* _ASM_X86_MICROCODE_H */
67