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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/threads.h>
- #include <linux/cpumask.h>
- #include <linux/bitops.h>
- extern int disable_apic;
- #endif
-
- #ifdef CONFIG_X86_LOCAL_APIC
- #ifndef __ASSEMBLY__
- #include <asm/fixmap.h>
- #include <asm/mpspec.h>
- #ifdef CONFIG_X86_IO_APIC
- #include <asm/io_apic.h>
- #endif
- #include <asm/apic.h>
- #include <asm/thread_info.h>
- #endif
- #endif
-
- #ifdef CONFIG_SMP
- #ifndef ASSEMBLY
-
- #include <asm/pda.h>
-
- struct pt_regs;
-
- extern cpumask_t cpu_present_mask;
- extern cpumask_t cpu_possible_map;
- extern cpumask_t cpu_online_map;
- extern cpumask_t cpu_callout_map;
- extern cpumask_t cpu_initialized;
-
- /*
- * Private routines/data
- */
-
- extern void smp_alloc_memory(void);
- extern volatile unsigned long smp_invalidate_needed;
- extern int pic_mode;
- extern void lock_ipi_call_lock(void);
- extern void unlock_ipi_call_lock(void);
- extern int smp_num_siblings;
- extern void smp_send_reschedule(int cpu);
- void smp_stop_cpu(void);
- extern int smp_call_function_single(int cpuid, void (*func) (void *info),
- void *info, int retry, int wait);
-
- extern cpumask_t cpu_sibling_map[NR_CPUS];
- extern cpumask_t cpu_core_map[NR_CPUS];
- extern u8 phys_proc_id[NR_CPUS];
- extern u8 cpu_core_id[NR_CPUS];
- extern u8 cpu_llc_id[NR_CPUS];
-
- #define SMP_TRAMPOLINE_BASE 0x6000
-
- /*
- * On x86 all CPUs are mapped 1:1 to the APIC space.
- * This simplifies scheduling and IPI sending and
- * compresses data structures.
- */
-
- static inline int num_booting_cpus(void)
- {
- return cpus_weight(cpu_callout_map);
- }
-
- #define raw_smp_processor_id() read_pda(cpunumber)
-
- 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));
- }
-
- extern int safe_smp_processor_id(void);
- extern int __cpu_disable(void);
- extern void __cpu_die(unsigned int cpu);
- extern void prefill_possible_map(void);
- extern unsigned num_processors;
- extern unsigned disabled_cpus;
-
- #endif /* !ASSEMBLY */
-
- #define NO_PROC_ID 0xFF /* No processor magic marker */
-
- #endif
-
- #ifndef ASSEMBLY
- /*
- * Some lowlevel functions might want to know about
- * the real APIC ID <-> CPU # mapping.
- */
- extern u8 x86_cpu_to_apicid[NR_CPUS]; /* physical ID */
- extern u8 x86_cpu_to_log_apicid[NR_CPUS];
- extern u8 bios_cpu_apicid[];
-
- static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
- {
- return cpus_addr(cpumask)[0];
- }
-
- static inline int cpu_present_to_apicid(int mps_cpu)
- {
- if (mps_cpu < NR_CPUS)
- return (int)bios_cpu_apicid[mps_cpu];
- else
- return BAD_APICID;
- }
-
- #endif /* !ASSEMBLY */
-
- #ifndef CONFIG_SMP
- #define stack_smp_processor_id() 0
- #define safe_smp_processor_id() 0
- #define cpu_logical_map(x) (x)
- #else
- #include <asm/thread_info.h>
- #define stack_smp_processor_id() \
- ({ \
- struct thread_info *ti; \
- __asm__("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK)); \
- ti->cpu; \
- })
- #endif
-
- #ifndef __ASSEMBLY__
- 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
-
- #ifdef CONFIG_SMP
- #define cpu_physical_id(cpu) x86_cpu_to_apicid[cpu]
- #else
- #define cpu_physical_id(cpu) boot_cpu_id
- #endif
-
- #endif
-
-