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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 <xen/config.h>
#include <xen/kernel.h>
#include <xen/cpumask.h>
#include <asm/current.h>
#endif
#ifdef CONFIG_X86_LOCAL_APIC
#ifndef __ASSEMBLY__
#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);
#ifdef CONFIG_X86_64
extern void zap_low_mappings(void);
#else
extern void zap_low_mappings(l2_pgentry_t *base);
#endif
#define MAX_APICID 256
extern u8 x86_cpu_to_apicid[];
#define cpu_physical_id(cpu) x86_cpu_to_apicid[cpu]
/* State of each CPU. */
#define CPU_ONLINE 0x0002 /* CPU is up */
#define CPU_DYING 0x0003 /* CPU is requested to die */
#define CPU_DEAD 0x0004 /* CPU is dead */
DECLARE_PER_CPU(int, cpu_state);
#ifdef CONFIG_HOTPLUG_CPU
#define cpu_is_offline(cpu) unlikely(per_cpu(cpu_state,cpu) == CPU_DYING)
extern int cpu_down(unsigned int cpu);
extern int cpu_up(unsigned int cpu);
extern void cpu_exit_clear(void);
extern void cpu_uninit(void);
extern void disable_nonboot_cpus(void);
extern void enable_nonboot_cpus(void);
#else
static inline int cpu_is_offline(int cpu) {return 0;}
static inline void disable_nonboot_cpus(void) {}
static inline void enable_nonboot_cpus(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() (get_processor_id())
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
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 int *)(APIC_BASE+APIC_ID));
}
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 int *)(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
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