1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_X86_CPU_H
3#define _ASM_X86_CPU_H
4
5#include <linux/device.h>
6#include <linux/cpu.h>
7#include <linux/topology.h>
8#include <linux/nodemask.h>
9#include <linux/percpu.h>
10#include <asm/ibt.h>
11
12#ifndef CONFIG_SMP
13#define cpu_physical_id(cpu)			boot_cpu_physical_apicid
14#define cpu_acpi_id(cpu)			0
15#define safe_smp_processor_id()			0
16#endif /* CONFIG_SMP */
17
18#ifdef CONFIG_HOTPLUG_CPU
19extern void soft_restart_cpu(void);
20#endif
21
22extern void ap_init_aperfmperf(void);
23
24int mwait_usable(const struct cpuinfo_x86 *);
25
26unsigned int x86_family(unsigned int sig);
27unsigned int x86_model(unsigned int sig);
28unsigned int x86_stepping(unsigned int sig);
29#ifdef CONFIG_CPU_SUP_INTEL
30extern void __init sld_setup(struct cpuinfo_x86 *c);
31extern bool handle_user_split_lock(struct pt_regs *regs, long error_code);
32extern bool handle_guest_split_lock(unsigned long ip);
33extern void handle_bus_lock(struct pt_regs *regs);
34u8 get_this_hybrid_cpu_type(void);
35#else
36static inline void __init sld_setup(struct cpuinfo_x86 *c) {}
37static inline bool handle_user_split_lock(struct pt_regs *regs, long error_code)
38{
39	return false;
40}
41
42static inline bool handle_guest_split_lock(unsigned long ip)
43{
44	return false;
45}
46
47static inline void handle_bus_lock(struct pt_regs *regs) {}
48
49static inline u8 get_this_hybrid_cpu_type(void)
50{
51	return 0;
52}
53#endif
54#ifdef CONFIG_IA32_FEAT_CTL
55void init_ia32_feat_ctl(struct cpuinfo_x86 *c);
56#else
57static inline void init_ia32_feat_ctl(struct cpuinfo_x86 *c) {}
58#endif
59
60extern __noendbr void cet_disable(void);
61
62struct cpu_signature;
63
64void intel_collect_cpu_info(struct cpu_signature *sig);
65
66extern u64 x86_read_arch_cap_msr(void);
67bool intel_find_matching_signature(void *mc, struct cpu_signature *sig);
68int intel_microcode_sanity_check(void *mc, bool print_err, int hdr_type);
69
70extern struct cpumask cpus_stop_mask;
71
72#endif /* _ASM_X86_CPU_H */
73