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);
52 #ifndef CONFIG_PARAVIRT
53 #define startup_ipi_hook(phys_apicid, start_eip, start_esp) \
58 * This function is needed by all SMP systems. It must _always_ be valid
59 * from the initial startup. We map APIC_BASE very early in page_setup(),
60 * so this is correct in the x86 case.
62 #define raw_smp_processor_id() (read_pda(cpu_number))
64 extern cpumask_t cpu_callout_map;
65 extern cpumask_t cpu_callin_map;
66 extern cpumask_t cpu_possible_map;
68 /* We don't mark CPUs online until __cpu_up(), so we need another measure */
69 static inline int num_booting_cpus(void)
71 return cpus_weight(cpu_callout_map);
74 #ifdef CONFIG_X86_LOCAL_APIC
76 #ifdef APIC_DEFINITION
77 extern int hard_smp_processor_id(void);
79 #include <mach_apicdef.h>
80 static inline int hard_smp_processor_id(void)
82 /* we don't want to mark this access volatile - bad code generation */
83 return GET_APIC_ID(*(unsigned long *)(APIC_BASE+APIC_ID));
88 extern int safe_smp_processor_id(void);
89 extern int __cpu_disable(void);
90 extern void __cpu_die(unsigned int cpu);
91 extern unsigned int num_processors;
93 #endif /* !__ASSEMBLY__ */
95 #else /* CONFIG_SMP */
97 #define safe_smp_processor_id() 0
98 #define cpu_physical_id(cpu) boot_cpu_physical_apicid
100 #define NO_PROC_ID 0xFF /* No processor magic marker */
106 extern u8 apicid_2_node[];
108 #ifdef CONFIG_X86_LOCAL_APIC
109 static __inline int logical_smp_processor_id(void)
111 /* we don't want to mark this access volatile - bad code generation */
112 return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE+APIC_LDR));