LXR linux/arch/x86/kernel/cpu/cpu.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef ARCH_X86_CPU_H
   3#define ARCH_X86_CPU_H
   4
   5/* attempt to consolidate cpu attributes */
   6struct cpu_dev {
   7        const char      *c_vendor;
   8
   9        /* some have two possibilities for cpuid string */
  10        const char      *c_ident[2];
  11
  12        void            (*c_early_init)(struct cpuinfo_x86 *);
  13        void            (*c_bsp_init)(struct cpuinfo_x86 *);
  14        void            (*c_init)(struct cpuinfo_x86 *);
  15        void            (*c_identify)(struct cpuinfo_x86 *);
  16        void            (*c_detect_tlb)(struct cpuinfo_x86 *);
  17        void            (*c_bsp_resume)(struct cpuinfo_x86 *);
  18        int             c_x86_vendor;
  19#ifdef CONFIG_X86_32
  20        /* Optional vendor specific routine to obtain the cache size. */
  21        unsigned int    (*legacy_cache_size)(struct cpuinfo_x86 *,
  22                                             unsigned int);
  23
  24        /* Family/stepping-based lookup table for model names. */
  25        struct legacy_cpu_model_info {
  26                int             family;
  27                const char      *model_names[16];
  28        }               legacy_models[5];
  29#endif
  30};
  31
  32struct _tlb_table {
  33        unsigned char descriptor;
  34        char tlb_type;
  35        unsigned int entries;
  36        /* unsigned int ways; */
  37        char info[128];
  38};
  39
  40#define cpu_dev_register(cpu_devX) \
  41        static const struct cpu_dev *const __cpu_dev_##cpu_devX __used \
  42        __attribute__((__section__(".x86_cpu_dev.init"))) = \
  43        &cpu_devX;
  44
  45extern const struct cpu_dev *const __x86_cpu_dev_start[],
  46                            *const __x86_cpu_dev_end[];
  47
  48extern void get_cpu_cap(struct cpuinfo_x86 *c);
  49extern void cpu_detect_cache_sizes(struct cpuinfo_x86 *c);
  50extern void init_scattered_cpuid_features(struct cpuinfo_x86 *c);
  51extern u32 get_scattered_cpuid_leaf(unsigned int level,
  52                                    unsigned int sub_leaf,
  53                                    enum cpuid_regs_idx reg);
  54extern void init_intel_cacheinfo(struct cpuinfo_x86 *c);
  55extern void init_amd_cacheinfo(struct cpuinfo_x86 *c);
  56
  57extern void detect_num_cpu_cores(struct cpuinfo_x86 *c);
  58extern int detect_extended_topology_early(struct cpuinfo_x86 *c);
  59extern int detect_extended_topology(struct cpuinfo_x86 *c);
  60extern int detect_ht_early(struct cpuinfo_x86 *c);
  61extern void detect_ht(struct cpuinfo_x86 *c);
  62
  63unsigned int aperfmperf_get_khz(int cpu);
  64
  65extern void x86_spec_ctrl_setup_ap(void);
  66
  67#endif /* ARCH_X86_CPU_H */
  68