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>
14 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(__ASSEMBLY__)
15 #include <asm/bitops.h>
16 #include <asm/mpspec.h>
18 #ifdef CONFIG_X86_IO_APIC
19 #include <asm/io_apic.h>
23 #define BAD_APICID 0xFFu
28 * Private routines/data
31 extern void smp_alloc_memory(void);
33 extern int smp_num_siblings;
34 extern cpumask_t cpu_sibling_map[];
35 extern cpumask_t cpu_core_map[];
37 extern void (*mtrr_hook) (void);
38 extern void zap_low_mappings (void);
39 extern void lock_ipi_call_lock(void);
40 extern void unlock_ipi_call_lock(void);
42 #define MAX_APICID 256
43 extern u8 x86_cpu_to_apicid[];
45 #define cpu_physical_id(cpu) x86_cpu_to_apicid[cpu]
47 #ifdef CONFIG_HOTPLUG_CPU
48 extern void cpu_exit_clear(void);
49 extern void cpu_uninit(void);
54 void (*smp_prepare_boot_cpu)(void);
55 void (*smp_prepare_cpus)(unsigned max_cpus);
56 int (*cpu_up)(unsigned cpu);
57 void (*smp_cpus_done)(unsigned max_cpus);
59 void (*smp_send_stop)(void);
60 void (*smp_send_reschedule)(int cpu);
61 int (*smp_call_function_mask)(cpumask_t mask,
62 void (*func)(void *info), void *info,
66 extern struct smp_ops smp_ops;
68 static inline void smp_prepare_boot_cpu(void)
70 smp_ops.smp_prepare_boot_cpu();
72 static inline void smp_prepare_cpus(unsigned int max_cpus)
74 smp_ops.smp_prepare_cpus(max_cpus);
76 static inline int __cpu_up(unsigned int cpu)
78 return smp_ops.cpu_up(cpu);
80 static inline void smp_cpus_done(unsigned int max_cpus)
82 smp_ops.smp_cpus_done(max_cpus);
85 static inline void smp_send_stop(void)
87 smp_ops.smp_send_stop();
89 static inline void smp_send_reschedule(int cpu)
91 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 int native_cpu_up(unsigned int cpunum);
103 void native_smp_cpus_done(unsigned int max_cpus);
105 #ifndef CONFIG_PARAVIRT
106 #define startup_ipi_hook(phys_apicid, start_eip, start_esp) \
111 * This function is needed by all SMP systems. It must _always_ be valid
112 * from the initial startup. We map APIC_BASE very early in page_setup(),
113 * so this is correct in the x86 case.
115 #define raw_smp_processor_id() (read_pda(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 #ifdef CONFIG_X86_LOCAL_APIC
129 #ifdef APIC_DEFINITION
130 extern int hard_smp_processor_id(void);
132 #include <mach_apicdef.h>
133 static inline int hard_smp_processor_id(void)
135 /* we don't want to mark this access volatile - bad code generation */
136 return GET_APIC_ID(*(unsigned long *)(APIC_BASE+APIC_ID));
141 extern int safe_smp_processor_id(void);
142 extern int __cpu_disable(void);
143 extern void __cpu_die(unsigned int cpu);
144 extern unsigned int num_processors;
146 #endif /* !__ASSEMBLY__ */
148 #else /* CONFIG_SMP */
150 #define safe_smp_processor_id() 0
151 #define cpu_physical_id(cpu) boot_cpu_physical_apicid
153 #define NO_PROC_ID 0xFF /* No processor magic marker */
159 extern u8 apicid_2_node[];
161 #ifdef CONFIG_X86_LOCAL_APIC
162 static __inline int logical_smp_processor_id(void)
164 /* we don't want to mark this access volatile - bad code generation */
165 return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE+APIC_LDR));