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 #ifdef CONFIG_X86_LOCAL_APIC
16 #include <asm/fixmap.h>
17 #include <asm/bitops.h>
18 #include <asm/mpspec.h>
19 #ifdef CONFIG_X86_IO_APIC
20 #include <asm/io_apic.h>
26 #define BAD_APICID 0xFFu
31 * Private routines/data
34 extern void smp_alloc_memory(void);
36 extern int smp_num_siblings;
37 extern cpumask_t cpu_sibling_map[];
38 extern cpumask_t cpu_core_map[];
40 extern void (*mtrr_hook) (void);
41 extern void zap_low_mappings (void);
42 extern void lock_ipi_call_lock(void);
43 extern void unlock_ipi_call_lock(void);
45 #define MAX_APICID 256
46 extern u8 x86_cpu_to_apicid[];
48 #define cpu_physical_id(cpu) x86_cpu_to_apicid[cpu]
50 #ifdef CONFIG_HOTPLUG_CPU
51 extern void cpu_exit_clear(void);
52 extern void cpu_uninit(void);
55 #ifndef CONFIG_PARAVIRT
56 #define startup_ipi_hook(phys_apicid, start_eip, start_esp) \
61 * This function is needed by all SMP systems. It must _always_ be valid
62 * from the initial startup. We map APIC_BASE very early in page_setup(),
63 * so this is correct in the x86 case.
65 #define raw_smp_processor_id() (read_pda(cpu_number))
67 extern cpumask_t cpu_callout_map;
68 extern cpumask_t cpu_callin_map;
69 extern cpumask_t cpu_possible_map;
71 /* We don't mark CPUs online until __cpu_up(), so we need another measure */
72 static inline int num_booting_cpus(void)
74 return cpus_weight(cpu_callout_map);
77 #ifdef CONFIG_X86_LOCAL_APIC
79 #ifdef APIC_DEFINITION
80 extern int hard_smp_processor_id(void);
82 #include <mach_apicdef.h>
83 static inline int hard_smp_processor_id(void)
85 /* we don't want to mark this access volatile - bad code generation */
86 return GET_APIC_ID(*(unsigned long *)(APIC_BASE+APIC_ID));
91 extern int safe_smp_processor_id(void);
92 extern int __cpu_disable(void);
93 extern void __cpu_die(unsigned int cpu);
94 extern unsigned int num_processors;
96 #endif /* !__ASSEMBLY__ */
98 #else /* CONFIG_SMP */
100 #define safe_smp_processor_id() 0
101 #define cpu_physical_id(cpu) boot_cpu_physical_apicid
103 #define NO_PROC_ID 0xFF /* No processor magic marker */
109 extern u8 apicid_2_node[];
111 #ifdef CONFIG_X86_LOCAL_APIC
112 static __inline int logical_smp_processor_id(void)
114 /* we don't want to mark this access volatile - bad code generation */
115 return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE+APIC_LDR));