1 #ifndef _ASM_X86_SMP_H_
2 #define _ASM_X86_SMP_H_
4 #include <linux/cpumask.h>
5 #include <linux/init.h>
6 #include <asm/percpu.h>
8 extern cpumask_t cpu_callout_map
;
10 extern int smp_num_siblings
;
11 extern unsigned int num_processors
;
12 extern cpumask_t cpu_initialized
;
14 extern u16 x86_cpu_to_apicid_init
[];
15 extern u16 x86_bios_cpu_apicid_init
[];
16 extern void *x86_cpu_to_apicid_early_ptr
;
17 extern void *x86_bios_cpu_apicid_early_ptr
;
19 DECLARE_PER_CPU(cpumask_t
, cpu_sibling_map
);
20 DECLARE_PER_CPU(cpumask_t
, cpu_core_map
);
21 DECLARE_PER_CPU(u16
, cpu_llc_id
);
22 DECLARE_PER_CPU(u16
, x86_cpu_to_apicid
);
23 DECLARE_PER_CPU(u16
, x86_bios_cpu_apicid
);
26 * Trampoline 80x86 program as an array.
28 extern const unsigned char trampoline_data
[];
29 extern const unsigned char trampoline_end
[];
30 extern unsigned char *trampoline_base
;
32 /* Static state in head.S used to set up a CPU */
38 extern unsigned long init_rsp
;
39 extern unsigned long initial_code
;
42 void (*smp_prepare_boot_cpu
)(void);
43 void (*smp_prepare_cpus
)(unsigned max_cpus
);
44 int (*cpu_up
)(unsigned cpu
);
45 void (*smp_cpus_done
)(unsigned max_cpus
);
47 void (*smp_send_stop
)(void);
48 void (*smp_send_reschedule
)(int cpu
);
49 int (*smp_call_function_mask
)(cpumask_t mask
,
50 void (*func
)(void *info
), void *info
,
54 /* Globals due to paravirt */
55 extern void set_cpu_sibling_map(int cpu
);
58 #ifndef CONFIG_PARAVIRT
59 #define startup_ipi_hook(phys_apicid, start_eip, start_esp) do { } while (0)
61 extern struct smp_ops smp_ops
;
63 static inline void smp_send_stop(void)
65 smp_ops
.smp_send_stop();
68 static inline void smp_prepare_boot_cpu(void)
70 smp_ops
.smp_prepare_boot_cpu();
73 static inline void smp_prepare_cpus(unsigned int max_cpus
)
75 smp_ops
.smp_prepare_cpus(max_cpus
);
78 static inline void smp_cpus_done(unsigned int max_cpus
)
80 smp_ops
.smp_cpus_done(max_cpus
);
83 static inline int __cpu_up(unsigned int cpu
)
85 return smp_ops
.cpu_up(cpu
);
88 static inline void smp_send_reschedule(int cpu
)
90 smp_ops
.smp_send_reschedule(cpu
);
93 static inline int smp_call_function_mask(cpumask_t mask
,
94 void (*func
) (void *info
), void *info
,
97 return smp_ops
.smp_call_function_mask(mask
, func
, info
, wait
);
100 void native_smp_prepare_boot_cpu(void);
101 void native_smp_prepare_cpus(unsigned int max_cpus
);
102 void native_smp_cpus_done(unsigned int max_cpus
);
103 int native_cpu_up(unsigned int cpunum
);
105 extern int __cpu_disable(void);
106 extern void __cpu_die(unsigned int cpu
);
108 extern unsigned disabled_cpus
;
109 extern void prefill_possible_map(void);
111 #define SMP_TRAMPOLINE_BASE 0x6000
112 extern unsigned long setup_trampoline(void);
114 void smp_store_cpu_info(int id
);
115 #define cpu_physical_id(cpu) per_cpu(x86_cpu_to_apicid, cpu)
117 #define cpu_physical_id(cpu) boot_cpu_physical_apicid
126 #ifdef CONFIG_HOTPLUG_CPU
127 extern void cpu_exit_clear(void);
128 extern void cpu_uninit(void);
129 extern void remove_siblinginfo(int cpu
);
132 extern void smp_alloc_memory(void);
133 extern void lock_ipi_call_lock(void);
134 extern void unlock_ipi_call_lock(void);
135 #endif /* __ASSEMBLY__ */