234 lines
5.5 KiB
C
234 lines
5.5 KiB
C
#ifndef _ASM_X86_SMP_H
|
|
#define _ASM_X86_SMP_H
|
|
#ifndef __ASSEMBLY__
|
|
#include <linux/cpumask.h>
|
|
#include <asm/percpu.h>
|
|
|
|
/*
|
|
* We need the APIC definitions automatically as part of 'smp.h'
|
|
*/
|
|
#ifdef CONFIG_X86_LOCAL_APIC
|
|
# include <asm/mpspec.h>
|
|
# include <asm/apic.h>
|
|
# ifdef CONFIG_X86_IO_APIC
|
|
# include <asm/io_apic.h>
|
|
# endif
|
|
#endif
|
|
#include <asm/thread_info.h>
|
|
#include <asm/cpumask.h>
|
|
#include <asm/cpufeature.h>
|
|
|
|
extern int smp_num_siblings;
|
|
extern unsigned int num_processors;
|
|
|
|
static inline bool cpu_has_ht_siblings(void)
|
|
{
|
|
bool has_siblings = false;
|
|
#ifdef CONFIG_SMP
|
|
has_siblings = cpu_has_ht && smp_num_siblings > 1;
|
|
#endif
|
|
return has_siblings;
|
|
}
|
|
|
|
DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_sibling_map);
|
|
DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_core_map);
|
|
/* cpus sharing the last level cache: */
|
|
DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_llc_shared_map);
|
|
DECLARE_PER_CPU_READ_MOSTLY(u16, cpu_llc_id);
|
|
DECLARE_PER_CPU_READ_MOSTLY(int, cpu_number);
|
|
|
|
static inline struct cpumask *cpu_sibling_mask(int cpu)
|
|
{
|
|
return per_cpu(cpu_sibling_map, cpu);
|
|
}
|
|
|
|
static inline struct cpumask *cpu_core_mask(int cpu)
|
|
{
|
|
return per_cpu(cpu_core_map, cpu);
|
|
}
|
|
|
|
static inline struct cpumask *cpu_llc_shared_mask(int cpu)
|
|
{
|
|
return per_cpu(cpu_llc_shared_map, cpu);
|
|
}
|
|
|
|
DECLARE_EARLY_PER_CPU_READ_MOSTLY(u16, x86_cpu_to_apicid);
|
|
DECLARE_EARLY_PER_CPU_READ_MOSTLY(u16, x86_bios_cpu_apicid);
|
|
#if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86_32)
|
|
DECLARE_EARLY_PER_CPU_READ_MOSTLY(int, x86_cpu_to_logical_apicid);
|
|
#endif
|
|
|
|
/* Static state in head.S used to set up a CPU */
|
|
extern unsigned long stack_start; /* Initial stack pointer address */
|
|
|
|
struct task_struct;
|
|
|
|
struct smp_ops {
|
|
void (*smp_prepare_boot_cpu)(void);
|
|
void (*smp_prepare_cpus)(unsigned max_cpus);
|
|
void (*smp_cpus_done)(unsigned max_cpus);
|
|
|
|
void (*stop_other_cpus)(int wait);
|
|
void (*smp_send_reschedule)(int cpu);
|
|
|
|
int (*cpu_up)(unsigned cpu, struct task_struct *tidle);
|
|
int (*cpu_disable)(void);
|
|
void (*cpu_die)(unsigned int cpu);
|
|
void (*play_dead)(void);
|
|
|
|
void (*send_call_func_ipi)(const struct cpumask *mask);
|
|
void (*send_call_func_single_ipi)(int cpu);
|
|
};
|
|
|
|
/* Globals due to paravirt */
|
|
extern void set_cpu_sibling_map(int cpu);
|
|
|
|
#ifdef CONFIG_SMP
|
|
#ifndef CONFIG_PARAVIRT
|
|
#define startup_ipi_hook(phys_apicid, start_eip, start_esp) do { } while (0)
|
|
#endif
|
|
extern struct smp_ops smp_ops;
|
|
|
|
static inline void smp_send_stop(void)
|
|
{
|
|
smp_ops.stop_other_cpus(0);
|
|
}
|
|
|
|
static inline void stop_other_cpus(void)
|
|
{
|
|
smp_ops.stop_other_cpus(1);
|
|
}
|
|
|
|
static inline void smp_prepare_boot_cpu(void)
|
|
{
|
|
smp_ops.smp_prepare_boot_cpu();
|
|
}
|
|
|
|
static inline void smp_prepare_cpus(unsigned int max_cpus)
|
|
{
|
|
smp_ops.smp_prepare_cpus(max_cpus);
|
|
}
|
|
|
|
static inline void smp_cpus_done(unsigned int max_cpus)
|
|
{
|
|
smp_ops.smp_cpus_done(max_cpus);
|
|
}
|
|
|
|
static inline int __cpu_up(unsigned int cpu, struct task_struct *tidle)
|
|
{
|
|
return smp_ops.cpu_up(cpu, tidle);
|
|
}
|
|
|
|
static inline int __cpu_disable(void)
|
|
{
|
|
return smp_ops.cpu_disable();
|
|
}
|
|
|
|
static inline void __cpu_die(unsigned int cpu)
|
|
{
|
|
smp_ops.cpu_die(cpu);
|
|
}
|
|
|
|
static inline void play_dead(void)
|
|
{
|
|
smp_ops.play_dead();
|
|
}
|
|
|
|
static inline void smp_send_reschedule(int cpu)
|
|
{
|
|
smp_ops.smp_send_reschedule(cpu);
|
|
}
|
|
|
|
static inline void arch_send_call_function_single_ipi(int cpu)
|
|
{
|
|
smp_ops.send_call_func_single_ipi(cpu);
|
|
}
|
|
|
|
static inline void arch_send_call_function_ipi_mask(const struct cpumask *mask)
|
|
{
|
|
smp_ops.send_call_func_ipi(mask);
|
|
}
|
|
|
|
void cpu_disable_common(void);
|
|
void native_smp_prepare_boot_cpu(void);
|
|
void native_smp_prepare_cpus(unsigned int max_cpus);
|
|
void native_smp_cpus_done(unsigned int max_cpus);
|
|
int native_cpu_up(unsigned int cpunum, struct task_struct *tidle);
|
|
int native_cpu_disable(void);
|
|
void native_cpu_die(unsigned int cpu);
|
|
void native_play_dead(void);
|
|
void play_dead_common(void);
|
|
void wbinvd_on_cpu(int cpu);
|
|
int wbinvd_on_all_cpus(void);
|
|
|
|
void native_send_call_func_ipi(const struct cpumask *mask);
|
|
void native_send_call_func_single_ipi(int cpu);
|
|
void x86_idle_thread_init(unsigned int cpu, struct task_struct *idle);
|
|
|
|
void smp_store_boot_cpu_info(void);
|
|
void smp_store_cpu_info(int id);
|
|
#define cpu_physical_id(cpu) per_cpu(x86_cpu_to_apicid, cpu)
|
|
|
|
#else /* !CONFIG_SMP */
|
|
#define wbinvd_on_cpu(cpu) wbinvd()
|
|
static inline int wbinvd_on_all_cpus(void)
|
|
{
|
|
wbinvd();
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_SMP */
|
|
|
|
extern unsigned disabled_cpus;
|
|
|
|
#ifdef CONFIG_X86_32_SMP
|
|
/*
|
|
* 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() (this_cpu_read(cpu_number))
|
|
extern int safe_smp_processor_id(void);
|
|
|
|
#elif defined(CONFIG_X86_64_SMP)
|
|
#define raw_smp_processor_id() (this_cpu_read(cpu_number))
|
|
|
|
#define stack_smp_processor_id() \
|
|
({ \
|
|
struct thread_info *ti; \
|
|
__asm__("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK)); \
|
|
ti->cpu; \
|
|
})
|
|
#define safe_smp_processor_id() smp_processor_id()
|
|
|
|
#endif
|
|
|
|
#ifdef CONFIG_X86_LOCAL_APIC
|
|
|
|
#ifndef CONFIG_X86_64
|
|
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(apic_read(APIC_LDR));
|
|
}
|
|
|
|
#endif
|
|
|
|
extern int hard_smp_processor_id(void);
|
|
|
|
#else /* CONFIG_X86_LOCAL_APIC */
|
|
|
|
# ifndef CONFIG_SMP
|
|
# define hard_smp_processor_id() 0
|
|
# endif
|
|
|
|
#endif /* CONFIG_X86_LOCAL_APIC */
|
|
|
|
#ifdef CONFIG_DEBUG_NMI_SELFTEST
|
|
extern void nmi_selftest(void);
|
|
#else
|
|
#define nmi_selftest() do { } while (0)
|
|
#endif
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
#endif /* _ASM_X86_SMP_H */
|