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- #ifndef __ASM_SMP_H
- #define __ASM_SMP_H
-
- /*
- * We need the APIC definitions automatically as part of 'smp.h'
- */
- #ifndef __ASSEMBLY__
- #include <linux/kernel.h>
- #include <linux/threads.h>
- #include <linux/cpumask.h>
- #endif
-
- #ifdef CONFIG_X86_LOCAL_APIC
- #ifndef __ASSEMBLY__
- #include <asm/fixmap.h>
- #include <asm/bitops.h>
- #include <asm/mpspec.h>
- #ifdef CONFIG_X86_IO_APIC
- #include <asm/io_apic.h>
- #endif
- #include <asm/apic.h>
- #endif
- #endif
-
- #define BAD_APICID 0xFFu
- #ifdef CONFIG_SMP
- #ifndef __ASSEMBLY__
-
- /*
- * Private routines/data
- */
-
- extern void smp_alloc_memory(void);
- extern int pic_mode;
- extern int smp_num_siblings;
- extern cpumask_t cpu_sibling_map[];
- extern cpumask_t cpu_core_map[];
-
- extern void (*mtrr_hook) (void);
- extern void zap_low_mappings (void);
- extern void lock_ipi_call_lock(void);
- extern void unlock_ipi_call_lock(void);
-
- #define MAX_APICID 256
- extern u8 x86_cpu_to_apicid[];
-
- #define cpu_physical_id(cpu) x86_cpu_to_apicid[cpu]
-
- #ifdef CONFIG_HOTPLUG_CPU
- extern void cpu_exit_clear(void);
- extern void cpu_uninit(void);
- #endif
-
- /*
- * This function is needed by all SMP systems. It must _always_ be valid
- * from the initial startup. We map APIC_BASE very early in page_setup(),
- * so this is correct in the x86 case.
- */
- #define raw_smp_processor_id() (current_thread_info()->cpu)
-
- extern cpumask_t cpu_callout_map;
- extern cpumask_t cpu_callin_map;
- extern cpumask_t cpu_possible_map;
-
- /* We don't mark CPUs online until __cpu_up(), so we need another measure */
- static inline int num_booting_cpus(void)
- {
- return cpus_weight(cpu_callout_map);
- }
-
- #ifdef CONFIG_X86_LOCAL_APIC
-
- #ifdef APIC_DEFINITION
- extern int hard_smp_processor_id(void);
- #else
- #include <mach_apicdef.h>
- static inline int hard_smp_processor_id(void)
- {
- /* we don't want to mark this access volatile - bad code generation */
- return GET_APIC_ID(*(unsigned long *)(APIC_BASE+APIC_ID));
- }
- #endif
-
- static __inline int logical_smp_processor_id(void)
- {
- /* we don't want to mark this access volatile - bad code generation */
- return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE+APIC_LDR));
- }
-
- #endif
-
- extern int __cpu_disable(void);
- extern void __cpu_die(unsigned int cpu);
- #endif /* !__ASSEMBLY__ */
-
- #else /* CONFIG_SMP */
-
- #define cpu_physical_id(cpu) boot_cpu_physical_apicid
-
- #define NO_PROC_ID 0xFF /* No processor magic marker */
-
- #endif
- #endif
-