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 <asm/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 x86_cpu_to_apicid
[];
44 #define cpu_physical_id(cpu) x86_cpu_to_apicid[cpu]
46 extern void set_cpu_sibling_map(int cpu
);
48 #ifdef CONFIG_HOTPLUG_CPU
49 extern void cpu_exit_clear(void);
50 extern void cpu_uninit(void);
51 extern void remove_siblinginfo(int cpu
);
56 void (*smp_prepare_boot_cpu
)(void);
57 void (*smp_prepare_cpus
)(unsigned max_cpus
);
58 int (*cpu_up
)(unsigned cpu
);
59 void (*smp_cpus_done
)(unsigned max_cpus
);
61 void (*smp_send_stop
)(void);
62 void (*smp_send_reschedule
)(int cpu
);
63 int (*smp_call_function_mask
)(cpumask_t mask
,
64 void (*func
)(void *info
), void *info
,
68 extern struct smp_ops smp_ops
;
70 static inline void smp_prepare_boot_cpu(void)
72 smp_ops
.smp_prepare_boot_cpu();
74 static inline void smp_prepare_cpus(unsigned int max_cpus
)
76 smp_ops
.smp_prepare_cpus(max_cpus
);
78 static inline int __cpu_up(unsigned int cpu
)
80 return smp_ops
.cpu_up(cpu
);
82 static inline void smp_cpus_done(unsigned int max_cpus
)
84 smp_ops
.smp_cpus_done(max_cpus
);
87 static inline void smp_send_stop(void)
89 smp_ops
.smp_send_stop();
91 static inline void smp_send_reschedule(int cpu
)
93 smp_ops
.smp_send_reschedule(cpu
);
95 static inline int smp_call_function_mask(cpumask_t mask
,
96 void (*func
) (void *info
), void *info
,
99 return smp_ops
.smp_call_function_mask(mask
, func
, info
, wait
);
102 void native_smp_prepare_boot_cpu(void);
103 void native_smp_prepare_cpus(unsigned int max_cpus
);
104 int native_cpu_up(unsigned int cpunum
);
105 void native_smp_cpus_done(unsigned int max_cpus
);
107 #ifndef CONFIG_PARAVIRT
108 #define startup_ipi_hook(phys_apicid, start_eip, start_esp) \
113 * This function is needed by all SMP systems. It must _always_ be valid
114 * from the initial startup. We map APIC_BASE very early in page_setup(),
115 * so this is correct in the x86 case.
117 DECLARE_PER_CPU(int, cpu_number
);
118 #define raw_smp_processor_id() (x86_read_percpu(cpu_number))
120 extern cpumask_t cpu_callout_map
;
121 extern cpumask_t cpu_callin_map
;
122 extern cpumask_t cpu_possible_map
;
124 /* We don't mark CPUs online until __cpu_up(), so we need another measure */
125 static inline int num_booting_cpus(void)
127 return cpus_weight(cpu_callout_map
);
130 extern int safe_smp_processor_id(void);
131 extern int __cpu_disable(void);
132 extern void __cpu_die(unsigned int cpu
);
133 extern unsigned int num_processors
;
135 void __cpuinit
smp_store_cpu_info(int id
);
137 #endif /* !__ASSEMBLY__ */
139 #else /* CONFIG_SMP */
141 #define safe_smp_processor_id() 0
142 #define cpu_physical_id(cpu) boot_cpu_physical_apicid
144 #define NO_PROC_ID 0xFF /* No processor magic marker */
146 #endif /* CONFIG_SMP */
150 #ifdef CONFIG_X86_LOCAL_APIC
152 #ifdef APIC_DEFINITION
153 extern int hard_smp_processor_id(void);
155 #include <mach_apicdef.h>
156 static inline int hard_smp_processor_id(void)
158 /* we don't want to mark this access volatile - bad code generation */
159 return GET_APIC_ID(*(unsigned long *)(APIC_BASE
+APIC_ID
));
161 #endif /* APIC_DEFINITION */
163 #else /* CONFIG_X86_LOCAL_APIC */
166 #define hard_smp_processor_id() 0
169 #endif /* CONFIG_X86_LOCAL_APIC */
171 extern u8 apicid_2_node
[];
173 #ifdef CONFIG_X86_LOCAL_APIC
174 static __inline
int logical_smp_processor_id(void)
176 /* we don't want to mark this access volatile - bad code generation */
177 return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE
+APIC_LDR
));