Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
1#ifndef _ASM_X86_MICROCODE_H
2#define _ASM_X86_MICROCODE_H
3
4#define native_rdmsr(msr, val1, val2) \
5do { \
6 u64 __val = native_read_msr((msr)); \
7 (void)((val1) = (u32)__val); \
8 (void)((val2) = (u32)(__val >> 32)); \
9} while (0)
10
11#define native_wrmsr(msr, low, high) \
12 native_write_msr(msr, low, high)
13
14#define native_wrmsrl(msr, val) \
15 native_write_msr((msr), \
16 (u32)((u64)(val)), \
17 (u32)((u64)(val) >> 32))
18
19struct cpu_signature {
20 unsigned int sig;
21 unsigned int pf;
22 unsigned int rev;
23};
24
25struct device;
26
27enum ucode_state { UCODE_ERROR, UCODE_OK, UCODE_NFOUND };
28extern bool dis_ucode_ldr;
29
30struct microcode_ops {
31 enum ucode_state (*request_microcode_user) (int cpu,
32 const void __user *buf, size_t size);
33
34 enum ucode_state (*request_microcode_fw) (int cpu, struct device *,
35 bool refresh_fw);
36
37 void (*microcode_fini_cpu) (int cpu);
38
39 /*
40 * The generic 'microcode_core' part guarantees that
41 * the callbacks below run on a target cpu when they
42 * are being called.
43 * See also the "Synchronization" section in microcode_core.c.
44 */
45 int (*apply_microcode) (int cpu);
46 int (*collect_cpu_info) (int cpu, struct cpu_signature *csig);
47};
48
49struct ucode_cpu_info {
50 struct cpu_signature cpu_sig;
51 int valid;
52 void *mc;
53};
54extern struct ucode_cpu_info ucode_cpu_info[];
55
56#ifdef CONFIG_MICROCODE_INTEL
57extern struct microcode_ops * __init init_intel_microcode(void);
58#else
59static inline struct microcode_ops * __init init_intel_microcode(void)
60{
61 return NULL;
62}
63#endif /* CONFIG_MICROCODE_INTEL */
64
65#ifdef CONFIG_MICROCODE_AMD
66extern struct microcode_ops * __init init_amd_microcode(void);
67extern void __exit exit_amd_microcode(void);
68#else
69static inline struct microcode_ops * __init init_amd_microcode(void)
70{
71 return NULL;
72}
73static inline void __exit exit_amd_microcode(void) {}
74#endif
75
76#ifdef CONFIG_MICROCODE_EARLY
77#define MAX_UCODE_COUNT 128
78extern void __init load_ucode_bsp(void);
79extern void load_ucode_ap(void);
80extern int __init save_microcode_in_initrd(void);
81void reload_early_microcode(void);
82#else
83static inline void __init load_ucode_bsp(void) {}
84static inline void load_ucode_ap(void) {}
85static inline int __init save_microcode_in_initrd(void)
86{
87 return 0;
88}
89static inline void reload_early_microcode(void) {}
90#endif
91
92#endif /* _ASM_X86_MICROCODE_H */