| #ifndef __ASM_SMP_H |
| #define __ASM_SMP_H |
| |
| #ifndef __ASSEMBLY__ |
| #include <linux/cpumask.h> |
| #include <linux/init.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 |
| |
| extern cpumask_t cpu_callout_map; |
| extern cpumask_t cpu_callin_map; |
| |
| extern int smp_num_siblings; |
| extern unsigned int num_processors; |
| |
| extern void (*mtrr_hook) (void); |
| extern void zap_low_mappings (void); |
| |
| extern u8 __initdata x86_cpu_to_apicid_init[]; |
| extern void *x86_cpu_to_apicid_early_ptr; |
| |
| DECLARE_PER_CPU(cpumask_t, cpu_sibling_map); |
| DECLARE_PER_CPU(cpumask_t, cpu_core_map); |
| DECLARE_PER_CPU(u8, cpu_llc_id); |
| DECLARE_PER_CPU(u8, x86_cpu_to_apicid); |
| |
| #ifdef CONFIG_HOTPLUG_CPU |
| extern void cpu_exit_clear(void); |
| extern void cpu_uninit(void); |
| extern void remove_siblinginfo(int cpu); |
| #endif |
| |
| /* Globals due to paravirt */ |
| extern void set_cpu_sibling_map(int cpu); |
| |
| struct smp_ops |
| { |
| void (*smp_prepare_boot_cpu)(void); |
| void (*smp_prepare_cpus)(unsigned max_cpus); |
| int (*cpu_up)(unsigned cpu); |
| void (*smp_cpus_done)(unsigned max_cpus); |
| |
| void (*smp_send_stop)(void); |
| void (*smp_send_reschedule)(int cpu); |
| int (*smp_call_function_mask)(cpumask_t mask, |
| void (*func)(void *info), void *info, |
| int wait); |
| }; |
| |
| #ifdef CONFIG_SMP |
| extern struct smp_ops smp_ops; |
| |
| 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 int __cpu_up(unsigned int cpu) |
| { |
| return smp_ops.cpu_up(cpu); |
| } |
| static inline void smp_cpus_done(unsigned int max_cpus) |
| { |
| smp_ops.smp_cpus_done(max_cpus); |
| } |
| |
| static inline void smp_send_stop(void) |
| { |
| smp_ops.smp_send_stop(); |
| } |
| static inline void smp_send_reschedule(int cpu) |
| { |
| smp_ops.smp_send_reschedule(cpu); |
| } |
| static inline int smp_call_function_mask(cpumask_t mask, |
| void (*func) (void *info), void *info, |
| int wait) |
| { |
| return smp_ops.smp_call_function_mask(mask, func, info, wait); |
| } |
| |
| void native_smp_prepare_boot_cpu(void); |
| void native_smp_prepare_cpus(unsigned int max_cpus); |
| int native_cpu_up(unsigned int cpunum); |
| void native_smp_cpus_done(unsigned int max_cpus); |
| |
| #ifndef CONFIG_PARAVIRT |
| #define startup_ipi_hook(phys_apicid, start_eip, start_esp) do { } while (0) |
| #endif |
| |
| extern int __cpu_disable(void); |
| extern void __cpu_die(unsigned int cpu); |
| |
| /* |
| * 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. |
| */ |
| DECLARE_PER_CPU(int, cpu_number); |
| #define raw_smp_processor_id() (x86_read_percpu(cpu_number)) |
| |
| #define cpu_physical_id(cpu) per_cpu(x86_cpu_to_apicid, cpu) |
| |
| extern int safe_smp_processor_id(void); |
| |
| void __cpuinit smp_store_cpu_info(int id); |
| |
| /* 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); |
| } |
| |
| #else /* CONFIG_SMP */ |
| |
| #define safe_smp_processor_id() 0 |
| #define cpu_physical_id(cpu) boot_cpu_physical_apicid |
| |
| #endif /* !CONFIG_SMP */ |
| |
| #ifdef CONFIG_X86_LOCAL_APIC |
| |
| 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(*(u32 *)(APIC_BASE + APIC_LDR)); |
| } |
| |
| # 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(*(u32 *)(APIC_BASE + APIC_ID)); |
| } |
| # endif /* APIC_DEFINITION */ |
| |
| #else /* CONFIG_X86_LOCAL_APIC */ |
| |
| # ifndef CONFIG_SMP |
| # define hard_smp_processor_id() 0 |
| # endif |
| |
| #endif /* CONFIG_X86_LOCAL_APIC */ |
| |
| #endif /* !ASSEMBLY */ |
| #endif |