include/asm-x86/smp.h

   1 #ifndef _ASM_X86_SMP_H_
   2 #define _ASM_X86_SMP_H_
   3 #ifndef __ASSEMBLY__
   4 #include <linux/cpumask.h>
   5 #include <linux/init.h>
   6 #include <asm/percpu.h>
   7
   8 extern cpumask_t cpu_callout_map;
   9
  10 extern int smp_num_siblings;
  11 extern unsigned int num_processors;
  12
  13 extern u16 x86_cpu_to_apicid_init[];
  14 extern u16 x86_bios_cpu_apicid_init[];
  15 extern void *x86_cpu_to_apicid_early_ptr;
  16 extern void *x86_bios_cpu_apicid_early_ptr;
  17
  18 DECLARE_PER_CPU(cpumask_t, cpu_sibling_map);
  19 DECLARE_PER_CPU(cpumask_t, cpu_core_map);
  20 DECLARE_PER_CPU(u16, cpu_llc_id);
  21 DECLARE_PER_CPU(u16, x86_cpu_to_apicid);
  22 DECLARE_PER_CPU(u16, x86_bios_cpu_apicid);
  23
  24 /*
  25  * Trampoline 80x86 program as an array.
  26  */
  27 extern const unsigned char trampoline_data [];
  28 extern const unsigned char trampoline_end  [];
  29 extern unsigned char *trampoline_base;
  30
  31 /* Static state in head.S used to set up a CPU */
  32 extern struct {
  33         void *sp;
  34         unsigned short ss;
  35 } stack_start;
  36
  37
  38 struct smp_ops {
  39         void (*smp_prepare_boot_cpu)(void);
  40         void (*smp_prepare_cpus)(unsigned max_cpus);
  41         int (*cpu_up)(unsigned cpu);
  42         void (*smp_cpus_done)(unsigned max_cpus);
  43
  44         void (*smp_send_stop)(void);
  45         void (*smp_send_reschedule)(int cpu);
  46         int (*smp_call_function_mask)(cpumask_t mask,
  47                                       void (*func)(void *info), void *info,
  48                                       int wait);
  49 };
  50
  51 /* Globals due to paravirt */
  52 extern void set_cpu_sibling_map(int cpu);
  53
  54 #ifdef CONFIG_SMP
  55 #ifndef CONFIG_PARAVIRT
  56 #define startup_ipi_hook(phys_apicid, start_eip, start_esp) do { } while (0)
  57 #endif
  58 extern struct smp_ops smp_ops;
  59
  60 static inline void smp_send_stop(void)
  61 {
  62         smp_ops.smp_send_stop();
  63 }
  64
  65 static inline void smp_prepare_boot_cpu(void)
  66 {
  67         smp_ops.smp_prepare_boot_cpu();
  68 }
  69
  70 static inline void smp_prepare_cpus(unsigned int max_cpus)
  71 {
  72         smp_ops.smp_prepare_cpus(max_cpus);
  73 }
  74
  75 static inline void smp_cpus_done(unsigned int max_cpus)
  76 {
  77         smp_ops.smp_cpus_done(max_cpus);
  78 }
  79
  80 static inline int __cpu_up(unsigned int cpu)
  81 {
  82         return smp_ops.cpu_up(cpu);
  83 }
  84
  85 static inline void smp_send_reschedule(int cpu)
  86 {
  87         smp_ops.smp_send_reschedule(cpu);
  88 }
  89
  90 static inline int smp_call_function_mask(cpumask_t mask,
  91                                          void (*func) (void *info), void *info,
  92                                          int wait)
  93 {
  94         return smp_ops.smp_call_function_mask(mask, func, info, wait);
  95 }
  96
  97 void native_smp_prepare_boot_cpu(void);
  98 void native_smp_prepare_cpus(unsigned int max_cpus);
  99 void native_smp_cpus_done(unsigned int max_cpus);
 100 int native_cpu_up(unsigned int cpunum);
 101
 102 extern int __cpu_disable(void);
 103 extern void __cpu_die(unsigned int cpu);
 104
 105 extern unsigned disabled_cpus;
 106 extern void prefill_possible_map(void);
 107
 108 #define SMP_TRAMPOLINE_BASE 0x6000
 109 extern unsigned long setup_trampoline(void);
 110
 111 void smp_store_cpu_info(int id);
 112 #define cpu_physical_id(cpu)    per_cpu(x86_cpu_to_apicid, cpu)
 113 #else
 114 #define cpu_physical_id(cpu)            boot_cpu_physical_apicid
 115 #endif
 116
 117 #ifdef CONFIG_X86_32
 118 # include "smp_32.h"
 119 #else
 120 # include "smp_64.h"
 121 #endif
 122
 123 #ifdef CONFIG_HOTPLUG_CPU
 124 extern void cpu_exit_clear(void);
 125 extern void cpu_uninit(void);
 126 extern void remove_siblinginfo(int cpu);
 127 #endif
 128
 129 extern void smp_alloc_memory(void);
 130 extern void lock_ipi_call_lock(void);
 131 extern void unlock_ipi_call_lock(void);
 132 #endif /* __ASSEMBLY__ */
 133 #endif