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 */
   6 struct 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
  32 struct _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
  45 extern const struct cpu_dev *const __x86_cpu_dev_start[],
  46                             *const __x86_cpu_dev_end[];
  47
  48 extern void get_cpu_cap(struct cpuinfo_x86 *c);
  49 extern void cpu_detect_cache_sizes(struct cpuinfo_x86 *c);
  50
  51 unsigned int aperfmperf_get_khz(int cpu);
  52
  53 #endif /* ARCH_X86_CPU_H */