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 extern cpumask_t cpu_sibling_map[];
34 extern 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 #ifdef CONFIG_HOTPLUG_CPU
47 extern void cpu_exit_clear(void);
48 extern void cpu_uninit(void);
53 void (*smp_prepare_boot_cpu)(void);
54 void (*smp_prepare_cpus)(unsigned max_cpus);
55 int (*cpu_up)(unsigned cpu);
56 void (*smp_cpus_done)(unsigned max_cpus);
58 void (*smp_send_stop)(void);
59 void (*smp_send_reschedule)(int cpu);
60 int (*smp_call_function_mask)(cpumask_t mask,
61 void (*func)(void *info), void *info,
65 extern struct smp_ops smp_ops;
67 static inline void smp_prepare_boot_cpu(void)
69 smp_ops.smp_prepare_boot_cpu();
71 static inline void smp_prepare_cpus(unsigned int max_cpus)
73 smp_ops.smp_prepare_cpus(max_cpus);
75 static inline int __cpu_up(unsigned int cpu)
77 return smp_ops.cpu_up(cpu);
79 static inline void smp_cpus_done(unsigned int max_cpus)
81 smp_ops.smp_cpus_done(max_cpus);
84 static inline void smp_send_stop(void)
86 smp_ops.smp_send_stop();
88 static inline void smp_send_reschedule(int cpu)
90 smp_ops.smp_send_reschedule(cpu);
92 static inline int smp_call_function_mask(cpumask_t mask,
93 void (*func) (void *info), void *info,
96 return smp_ops.smp_call_function_mask(mask, func, info, wait);
99 void native_smp_prepare_boot_cpu(void);
100 void native_smp_prepare_cpus(unsigned int max_cpus);
101 int native_cpu_up(unsigned int cpunum);
102 void native_smp_cpus_done(unsigned int max_cpus);
104 #ifndef CONFIG_PARAVIRT
105 #define startup_ipi_hook(phys_apicid, start_eip, start_esp) \
110 * This function is needed by all SMP systems. It must _always_ be valid
111 * from the initial startup. We map APIC_BASE very early in page_setup(),
112 * so this is correct in the x86 case.
114 DECLARE_PER_CPU(int, cpu_number);
115 #define raw_smp_processor_id() (x86_read_percpu(cpu_number))
117 extern cpumask_t cpu_callout_map;
118 extern cpumask_t cpu_callin_map;
119 extern cpumask_t cpu_possible_map;
121 /* We don't mark CPUs online until __cpu_up(), so we need another measure */
122 static inline int num_booting_cpus(void)
124 return cpus_weight(cpu_callout_map);
127 extern int safe_smp_processor_id(void);
128 extern int __cpu_disable(void);
129 extern void __cpu_die(unsigned int cpu);
130 extern unsigned int num_processors;
132 #endif /* !__ASSEMBLY__ */
134 #else /* CONFIG_SMP */
136 #define safe_smp_processor_id() 0
137 #define cpu_physical_id(cpu) boot_cpu_physical_apicid
139 #define NO_PROC_ID 0xFF /* No processor magic marker */
141 #endif /* CONFIG_SMP */
145 #ifdef CONFIG_X86_LOCAL_APIC
147 #ifdef APIC_DEFINITION
148 extern int hard_smp_processor_id(void);
150 #include <mach_apicdef.h>
151 static inline int hard_smp_processor_id(void)
153 /* we don't want to mark this access volatile - bad code generation */
154 return GET_APIC_ID(*(unsigned long *)(APIC_BASE+APIC_ID));
156 #endif /* APIC_DEFINITION */
158 #else /* CONFIG_X86_LOCAL_APIC */
161 #define hard_smp_processor_id() 0
164 #endif /* CONFIG_X86_LOCAL_APIC */
166 extern u8 apicid_2_node[];
168 #ifdef CONFIG_X86_LOCAL_APIC
169 static __inline int logical_smp_processor_id(void)
171 /* we don't want to mark this access volatile - bad code generation */
172 return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE+APIC_LDR));