4 #include <linux/cpumask.h>
5 #include <linux/init.h>
6 #include <asm/percpu.h>
9 * We need the APIC definitions automatically as part of 'smp.h'
11 #ifdef CONFIG_X86_LOCAL_APIC
12 # include <asm/mpspec.h>
13 # include <asm/apic.h>
14 # ifdef CONFIG_X86_IO_APIC
15 # include <asm/io_apic.h>
19 #include <asm/thread_info.h>
20 #include <asm/cpumask.h>
22 extern int __cpuinit get_local_pda(int cpu);
24 extern int smp_num_siblings;
25 extern unsigned int num_processors;
27 DECLARE_PER_CPU(cpumask_t, cpu_sibling_map);
28 DECLARE_PER_CPU(cpumask_t, cpu_core_map);
29 DECLARE_PER_CPU(u16, cpu_llc_id);
31 DECLARE_PER_CPU(int, cpu_number);
34 static inline struct cpumask *cpu_sibling_mask(int cpu)
36 return &per_cpu(cpu_sibling_map, cpu);
39 static inline struct cpumask *cpu_core_mask(int cpu)
41 return &per_cpu(cpu_core_map, cpu);
44 DECLARE_EARLY_PER_CPU(u16, x86_cpu_to_apicid);
45 DECLARE_EARLY_PER_CPU(u16, x86_bios_cpu_apicid);
47 /* Static state in head.S used to set up a CPU */
54 void (*smp_prepare_boot_cpu)(void);
55 void (*smp_prepare_cpus)(unsigned max_cpus);
56 void (*smp_cpus_done)(unsigned max_cpus);
58 void (*smp_send_stop)(void);
59 void (*smp_send_reschedule)(int cpu);
61 int (*cpu_up)(unsigned cpu);
62 int (*cpu_disable)(void);
63 void (*cpu_die)(unsigned int cpu);
64 void (*play_dead)(void);
66 void (*send_call_func_ipi)(const struct cpumask *mask);
67 void (*send_call_func_single_ipi)(int cpu);
70 /* Globals due to paravirt */
71 extern void set_cpu_sibling_map(int cpu);
74 #ifndef CONFIG_PARAVIRT
75 #define startup_ipi_hook(phys_apicid, start_eip, start_esp) do { } while (0)
77 extern struct smp_ops smp_ops;
79 static inline void smp_send_stop(void)
81 smp_ops.smp_send_stop();
84 static inline void smp_prepare_boot_cpu(void)
86 smp_ops.smp_prepare_boot_cpu();
89 static inline void smp_prepare_cpus(unsigned int max_cpus)
91 smp_ops.smp_prepare_cpus(max_cpus);
94 static inline void smp_cpus_done(unsigned int max_cpus)
96 smp_ops.smp_cpus_done(max_cpus);
99 static inline int __cpu_up(unsigned int cpu)
101 return smp_ops.cpu_up(cpu);
104 static inline int __cpu_disable(void)
106 return smp_ops.cpu_disable();
109 static inline void __cpu_die(unsigned int cpu)
111 smp_ops.cpu_die(cpu);
114 static inline void play_dead(void)
119 static inline void smp_send_reschedule(int cpu)
121 smp_ops.smp_send_reschedule(cpu);
124 static inline void arch_send_call_function_single_ipi(int cpu)
126 smp_ops.send_call_func_single_ipi(cpu);
129 static inline void arch_send_call_function_ipi(cpumask_t mask)
131 smp_ops.send_call_func_ipi(&mask);
134 void cpu_disable_common(void);
135 void native_smp_prepare_boot_cpu(void);
136 void native_smp_prepare_cpus(unsigned int max_cpus);
137 void native_smp_cpus_done(unsigned int max_cpus);
138 int native_cpu_up(unsigned int cpunum);
139 int native_cpu_disable(void);
140 void native_cpu_die(unsigned int cpu);
141 void native_play_dead(void);
142 void play_dead_common(void);
144 void native_send_call_func_ipi(const struct cpumask *mask);
145 void native_send_call_func_single_ipi(int cpu);
147 void smp_store_cpu_info(int id);
148 #define cpu_physical_id(cpu) per_cpu(x86_cpu_to_apicid, cpu)
150 /* We don't mark CPUs online until __cpu_up(), so we need another measure */
151 static inline int num_booting_cpus(void)
153 return cpumask_weight(cpu_callout_mask);
155 #endif /* CONFIG_SMP */
157 extern unsigned disabled_cpus __cpuinitdata;
159 #ifdef CONFIG_X86_32_SMP
161 * This function is needed by all SMP systems. It must _always_ be valid
162 * from the initial startup. We map APIC_BASE very early in page_setup(),
163 * so this is correct in the x86 case.
165 #define raw_smp_processor_id() (x86_read_percpu(cpu_number))
166 extern int safe_smp_processor_id(void);
168 #elif defined(CONFIG_X86_64_SMP)
169 #define raw_smp_processor_id() read_pda(cpunumber)
171 #define stack_smp_processor_id() \
173 struct thread_info *ti; \
174 __asm__("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK)); \
177 #define safe_smp_processor_id() smp_processor_id()
181 #ifdef CONFIG_X86_LOCAL_APIC
183 #ifndef CONFIG_X86_64
184 static inline int logical_smp_processor_id(void)
186 /* we don't want to mark this access volatile - bad code generation */
187 return GET_APIC_LOGICAL_ID(*(u32 *)(APIC_BASE + APIC_LDR));
190 #include <mach_apicdef.h>
191 static inline unsigned int read_apic_id(void)
195 reg = *(u32 *)(APIC_BASE + APIC_ID);
197 return GET_APIC_ID(reg);
202 # if defined(APIC_DEFINITION) || defined(CONFIG_X86_64)
203 extern int hard_smp_processor_id(void);
205 #include <mach_apicdef.h>
206 static inline int hard_smp_processor_id(void)
208 /* we don't want to mark this access volatile - bad code generation */
209 return read_apic_id();
211 # endif /* APIC_DEFINITION */
213 #else /* CONFIG_X86_LOCAL_APIC */
216 # define hard_smp_processor_id() 0
219 #endif /* CONFIG_X86_LOCAL_APIC */
221 #endif /* __ASSEMBLY__ */
222 #endif /* _ASM_X86_SMP_H */