5 * We need the APIC definitions automatically as part of 'smp.h'
8 #include <linux/config.h>
9 #include <linux/kernel.h>
10 #include <linux/threads.h>
11 #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 smp_flush_tlb(void);
41 extern void smp_message_irq(int cpl, void *dev_id, struct pt_regs *regs);
42 extern void smp_invalidate_rcv(void); /* Process an NMI */
43 extern void (*mtrr_hook) (void);
44 extern void zap_low_mappings (void);
45 extern void lock_ipi_call_lock(void);
46 extern void unlock_ipi_call_lock(void);
48 #define MAX_APICID 256
49 extern u8 x86_cpu_to_apicid[];
51 #ifdef CONFIG_HOTPLUG_CPU
52 extern void cpu_exit_clear(void);
53 extern void cpu_uninit(void);
55 #define __HAVE_ARCH_SMP_PREPARE_CPU
56 extern int smp_prepare_cpu(int cpu);
60 * This function is needed by all SMP systems. It must _always_ be valid
61 * from the initial startup. We map APIC_BASE very early in page_setup(),
62 * so this is correct in the x86 case.
64 #define raw_smp_processor_id() (current_thread_info()->cpu)
66 extern cpumask_t cpu_callout_map;
67 extern cpumask_t cpu_callin_map;
68 #define cpu_possible_map cpu_callout_map
70 /* We don't mark CPUs online until __cpu_up(), so we need another measure */
71 static inline int num_booting_cpus(void)
73 return cpus_weight(cpu_callout_map);
76 #ifdef CONFIG_X86_LOCAL_APIC
78 #ifdef APIC_DEFINITION
79 extern int hard_smp_processor_id(void);
81 #include <mach_apicdef.h>
82 static inline int hard_smp_processor_id(void)
84 /* we don't want to mark this access volatile - bad code generation */
85 return GET_APIC_ID(*(unsigned long *)(APIC_BASE+APIC_ID));
89 static __inline int logical_smp_processor_id(void)
91 /* we don't want to mark this access volatile - bad code generation */
92 return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE+APIC_LDR));
97 extern int __cpu_disable(void);
98 extern void __cpu_die(unsigned int cpu);
99 #endif /* !__ASSEMBLY__ */
101 #define NO_PROC_ID 0xFF /* No processor magic marker */