| #ifndef __ASM_SMP_H |
| #define __ASM_SMP_H |
| |
| /* |
| * We need the APIC definitions automatically as part of 'smp.h' |
| */ |
| #ifndef __ASSEMBLY__ |
| #include <linux/kernel.h> |
| #include <linux/threads.h> |
| #include <linux/cpumask.h> |
| #endif |
| |
| #ifdef CONFIG_X86_LOCAL_APIC |
| #ifndef __ASSEMBLY__ |
| #include <asm/fixmap.h> |
| #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); |
| extern void zap_low_mappings (void); |
| extern void lock_ipi_call_lock(void); |
| extern void unlock_ipi_call_lock(void); |
| |
| #define MAX_APICID 256 |
| extern u8 x86_cpu_to_apicid[]; |
| |
| #define cpu_physical_id(cpu) x86_cpu_to_apicid[cpu] |
| |
| extern u8 apicid_2_node[]; |
| |
| #ifdef CONFIG_HOTPLUG_CPU |
| extern void cpu_exit_clear(void); |
| extern void cpu_uninit(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() (current_thread_info()->cpu) |
| |
| 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 |
| |
| #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(*(unsigned long *)(APIC_BASE+APIC_ID)); |
| } |
| #endif |
| #endif |
| |
| extern int __cpu_disable(void); |
| extern void __cpu_die(unsigned int cpu); |
| extern unsigned int num_processors; |
| |
| #endif /* !__ASSEMBLY__ */ |
| |
| #else /* CONFIG_SMP */ |
| |
| #define cpu_physical_id(cpu) boot_cpu_physical_apicid |
| |
| #define NO_PROC_ID 0xFF /* No processor magic marker */ |
| |
| #endif |
| |
| #ifndef __ASSEMBLY__ |
| #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(*(unsigned long *)(APIC_BASE+APIC_LDR)); |
| } |
| #endif |
| #endif |
| |
| #endif |