diff options
Diffstat (limited to 'include/asm-x86/smp.h')
| -rw-r--r-- | include/asm-x86/smp.h | 209 |
1 files changed, 206 insertions, 3 deletions
diff --git a/include/asm-x86/smp.h b/include/asm-x86/smp.h index f2e8319a6b0b..1ebaa5cd3112 100644 --- a/include/asm-x86/smp.h +++ b/include/asm-x86/smp.h @@ -1,5 +1,208 @@ -#ifdef CONFIG_X86_32 -# include "smp_32.h" +#ifndef _ASM_X86_SMP_H_ +#define _ASM_X86_SMP_H_ +#ifndef __ASSEMBLY__ +#include <linux/cpumask.h> +#include <linux/init.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/pda.h> +#include <asm/thread_info.h> + +extern cpumask_t cpu_callout_map; +extern cpumask_t cpu_initialized; +extern cpumask_t cpu_callin_map; + +extern void (*mtrr_hook)(void); +extern void zap_low_mappings(void); + +extern int smp_num_siblings; +extern unsigned int num_processors; +extern cpumask_t cpu_initialized; + +#ifdef CONFIG_SMP +extern u16 x86_cpu_to_apicid_init[]; +extern u16 x86_bios_cpu_apicid_init[]; +extern void *x86_cpu_to_apicid_early_ptr; +extern void *x86_bios_cpu_apicid_early_ptr; #else -# include "smp_64.h" +#define x86_cpu_to_apicid_early_ptr NULL +#define x86_bios_cpu_apicid_early_ptr NULL +#endif + +DECLARE_PER_CPU(cpumask_t, cpu_sibling_map); +DECLARE_PER_CPU(cpumask_t, cpu_core_map); +DECLARE_PER_CPU(u16, cpu_llc_id); +DECLARE_PER_CPU(u16, x86_cpu_to_apicid); +DECLARE_PER_CPU(u16, x86_bios_cpu_apicid); + +/* Static state in head.S used to set up a CPU */ +extern struct { + void *sp; + unsigned short ss; +} stack_start; + +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); +}; + +/* 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.smp_send_stop(); +} + +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) +{ + return smp_ops.cpu_up(cpu); +} + +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); +void native_smp_cpus_done(unsigned int max_cpus); +int native_cpu_up(unsigned int cpunum); + +extern int __cpu_disable(void); +extern void __cpu_die(unsigned int cpu); + +extern void prefill_possible_map(void); + +void smp_store_cpu_info(int id); +#define cpu_physical_id(cpu) per_cpu(x86_cpu_to_apicid, cpu) + +/* 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); +} +#endif /* CONFIG_SMP */ + +extern unsigned disabled_cpus __cpuinitdata; + +#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. + */ +DECLARE_PER_CPU(int, cpu_number); +#define raw_smp_processor_id() (x86_read_percpu(cpu_number)) +extern int safe_smp_processor_id(void); + +#elif defined(CONFIG_X86_64_SMP) +#define raw_smp_processor_id() read_pda(cpunumber) + +#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() + +#else /* !CONFIG_X86_32_SMP && !CONFIG_X86_64_SMP */ +#define cpu_physical_id(cpu) boot_cpu_physical_apicid +#define safe_smp_processor_id() 0 +#define stack_smp_processor_id() 0 +#endif + +#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)); +} + +#ifndef CONFIG_X86_64 +static inline unsigned int read_apic_id(void) +{ + return *(u32 *)(APIC_BASE + APIC_ID); +} +#else +extern unsigned int read_apic_id(void); +#endif + + +# 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(read_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 */ + +#ifdef CONFIG_HOTPLUG_CPU +extern void cpu_exit_clear(void); +extern void cpu_uninit(void); +#endif + +extern void smp_alloc_memory(void); +extern void lock_ipi_call_lock(void); +extern void unlock_ipi_call_lock(void); +#endif /* __ASSEMBLY__ */ #endif |