5 * We need the APIC definitions automatically as part of 'smp.h'
8 #include <linux/kernel.h>
9 #include <linux/threads.h>
10 #include <linux/cpumask.h>
13 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(__ASSEMBLY__)
14 #include <linux/bitops.h>
15 #include <asm/mpspec.h>
17 #ifdef CONFIG_X86_IO_APIC
18 #include <asm/io_apic.h>
22 #define BAD_APICID 0xFFu
27 * Private routines/data
30 extern void smp_alloc_memory(void);
32 extern int smp_num_siblings
;
33 DECLARE_PER_CPU(cpumask_t
, cpu_sibling_map
);
34 DECLARE_PER_CPU(cpumask_t
, cpu_core_map
);
36 extern void (*mtrr_hook
) (void);
37 extern void zap_low_mappings (void);
38 extern void lock_ipi_call_lock(void);
39 extern void unlock_ipi_call_lock(void);
41 #define MAX_APICID 256
42 extern u8 __initdata x86_cpu_to_apicid_init
[];
43 extern void *x86_cpu_to_apicid_ptr
;
44 DECLARE_PER_CPU(u8
, x86_cpu_to_apicid
);
46 #define cpu_physical_id(cpu) per_cpu(x86_cpu_to_apicid, cpu)
48 extern void set_cpu_sibling_map(int cpu
);
50 #ifdef CONFIG_HOTPLUG_CPU
51 extern void cpu_exit_clear(void);
52 extern void cpu_uninit(void);
53 extern void remove_siblinginfo(int cpu
);
58 void (*smp_prepare_boot_cpu
)(void);
59 void (*smp_prepare_cpus
)(unsigned max_cpus
);
60 int (*cpu_up
)(unsigned cpu
);
61 void (*smp_cpus_done
)(unsigned max_cpus
);
63 void (*smp_send_stop
)(void);
64 void (*smp_send_reschedule
)(int cpu
);
65 int (*smp_call_function_mask
)(cpumask_t mask
,
66 void (*func
)(void *info
), void *info
,
70 extern struct smp_ops smp_ops
;
72 static inline void smp_prepare_boot_cpu(void)
74 smp_ops
.smp_prepare_boot_cpu();
76 static inline void smp_prepare_cpus(unsigned int max_cpus
)
78 smp_ops
.smp_prepare_cpus(max_cpus
);
80 static inline int __cpu_up(unsigned int cpu
)
82 return smp_ops
.cpu_up(cpu
);
84 static inline void smp_cpus_done(unsigned int max_cpus
)
86 smp_ops
.smp_cpus_done(max_cpus
);
89 static inline void smp_send_stop(void)
91 smp_ops
.smp_send_stop();
93 static inline void smp_send_reschedule(int cpu
)
95 smp_ops
.smp_send_reschedule(cpu
);
97 static inline int smp_call_function_mask(cpumask_t mask
,
98 void (*func
) (void *info
), void *info
,
101 return smp_ops
.smp_call_function_mask(mask
, func
, info
, wait
);
104 void native_smp_prepare_boot_cpu(void);
105 void native_smp_prepare_cpus(unsigned int max_cpus
);
106 int native_cpu_up(unsigned int cpunum
);
107 void native_smp_cpus_done(unsigned int max_cpus
);
109 #ifndef CONFIG_PARAVIRT
110 #define startup_ipi_hook(phys_apicid, start_eip, start_esp) \
115 * This function is needed by all SMP systems. It must _always_ be valid
116 * from the initial startup. We map APIC_BASE very early in page_setup(),
117 * so this is correct in the x86 case.
119 DECLARE_PER_CPU(int, cpu_number
);
120 #define raw_smp_processor_id() (x86_read_percpu(cpu_number))
122 extern cpumask_t cpu_callout_map
;
123 extern cpumask_t cpu_callin_map
;
124 extern cpumask_t cpu_possible_map
;
126 /* We don't mark CPUs online until __cpu_up(), so we need another measure */
127 static inline int num_booting_cpus(void)
129 return cpus_weight(cpu_callout_map
);
132 extern int safe_smp_processor_id(void);
133 extern int __cpu_disable(void);
134 extern void __cpu_die(unsigned int cpu
);
135 extern unsigned int num_processors
;
137 void __cpuinit
smp_store_cpu_info(int id
);
139 #endif /* !__ASSEMBLY__ */
141 #else /* CONFIG_SMP */
143 #define safe_smp_processor_id() 0
144 #define cpu_physical_id(cpu) boot_cpu_physical_apicid
146 #define NO_PROC_ID 0xFF /* No processor magic marker */
148 #endif /* CONFIG_SMP */
152 #ifdef CONFIG_X86_LOCAL_APIC
154 #ifdef APIC_DEFINITION
155 extern int hard_smp_processor_id(void);
157 #include <mach_apicdef.h>
158 static inline int hard_smp_processor_id(void)
160 /* we don't want to mark this access volatile - bad code generation */
161 return GET_APIC_ID(*(unsigned long *)(APIC_BASE
+APIC_ID
));
163 #endif /* APIC_DEFINITION */
165 #else /* CONFIG_X86_LOCAL_APIC */
168 #define hard_smp_processor_id() 0
171 #endif /* CONFIG_X86_LOCAL_APIC */
173 extern u8 apicid_2_node
[];
175 #ifdef CONFIG_X86_LOCAL_APIC
176 static __inline
int logical_smp_processor_id(void)
178 /* we don't want to mark this access volatile - bad code generation */
179 return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE
+APIC_LDR
));