projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef __ASM_SMP_H |
| 2 | #define __ASM_SMP_H | |
| 3 | ||
| 4 | /* | |
| 5 | * We need the APIC definitions automatically as part of 'smp.h' | |
| 6 | */ | |
| 7 | #ifndef __ASSEMBLY__ | |
| 8 | #include <linux/config.h> | |
| 9 | #include <linux/kernel.h> | |
| 10 | #include <linux/threads.h> | |
| 11 | #include <linux/cpumask.h> | |
| 12 | #endif | |
| 13 | ||
| 14 | #ifdef CONFIG_X86_LOCAL_APIC | |
| 15 | #ifndef __ASSEMBLY__ | |
| 16 | #include <asm/fixmap.h> | |
| 17 | #include <asm/bitops.h> | |
| 18 | #include <asm/mpspec.h> | |
| 19 | #ifdef CONFIG_X86_IO_APIC | |
| 20 | #include <asm/io_apic.h> | |
| 21 | #endif | |
| 22 | #include <asm/apic.h> | |
| 23 | #endif | |
| 24 | #endif | |
| 25 | ||
| 26 | #define BAD_APICID 0xFFu | |
| 27 | #ifdef CONFIG_SMP | |
| 28 | #ifndef __ASSEMBLY__ | |
| 29 | ||
| 30 | /* | |
| 31 | * Private routines/data | |
| 32 | */ | |
| 33 | ||
| 34 | extern void smp_alloc_memory(void); | |
| 35 | extern int pic_mode; | |
| 36 | extern int smp_num_siblings; | |
| 37 | extern cpumask_t cpu_sibling_map[]; | |
| 3dd9d514 | 38 | extern cpumask_t cpu_core_map[]; |
| 1da177e4 | 39 | |
| 1da177e4 LT |
40 | extern void (*mtrr_hook) (void); |
| 41 | extern void zap_low_mappings (void); | |
| 6fe940d6 LS |
42 | extern void lock_ipi_call_lock(void); |
| 43 | extern void unlock_ipi_call_lock(void); | |
| 1da177e4 LT |
44 | |
| 45 | #define MAX_APICID 256 | |
| 46 | extern u8 x86_cpu_to_apicid[]; | |
| 47 | ||
| e1367daf LS |
48 | #ifdef CONFIG_HOTPLUG_CPU |
| 49 | extern void cpu_exit_clear(void); | |
| 50 | extern void cpu_uninit(void); | |
| e1367daf LS |
51 | #endif |
| 52 | ||
| 1da177e4 LT |
53 | /* |
| 54 | * This function is needed by all SMP systems. It must _always_ be valid | |
| 55 | * from the initial startup. We map APIC_BASE very early in page_setup(), | |
| 56 | * so this is correct in the x86 case. | |
| 57 | */ | |
| 39c715b7 | 58 | #define raw_smp_processor_id() (current_thread_info()->cpu) |
| 1da177e4 LT |
59 | |
| 60 | extern cpumask_t cpu_callout_map; | |
| 61 | extern cpumask_t cpu_callin_map; | |
| 4ad8d383 | 62 | extern cpumask_t cpu_possible_map; |
| 1da177e4 LT |
63 | |
| 64 | /* We don't mark CPUs online until __cpu_up(), so we need another measure */ | |
| 65 | static inline int num_booting_cpus(void) | |
| 66 | { | |
| 67 | return cpus_weight(cpu_callout_map); | |
| 68 | } | |
| 69 | ||
| 70 | #ifdef CONFIG_X86_LOCAL_APIC | |
| 71 | ||
| 72 | #ifdef APIC_DEFINITION | |
| 73 | extern int hard_smp_processor_id(void); | |
| 74 | #else | |
| 75 | #include <mach_apicdef.h> | |
| 76 | static inline int hard_smp_processor_id(void) | |
| 77 | { | |
| 78 | /* we don't want to mark this access volatile - bad code generation */ | |
| 79 | return GET_APIC_ID(*(unsigned long *)(APIC_BASE+APIC_ID)); | |
| 80 | } | |
| 81 | #endif | |
| 82 | ||
| 83 | static __inline int logical_smp_processor_id(void) | |
| 84 | { | |
| 85 | /* we don't want to mark this access volatile - bad code generation */ | |
| 86 | return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE+APIC_LDR)); | |
| 87 | } | |
| 88 | ||
| 89 | #endif | |
| f3705136 ZM |
90 | |
| 91 | extern int __cpu_disable(void); | |
| 92 | extern void __cpu_die(unsigned int cpu); | |
| 1da177e4 LT |
93 | #endif /* !__ASSEMBLY__ */ |
| 94 | ||
| 95 | #define NO_PROC_ID 0xFF /* No processor magic marker */ | |
| 96 | ||
| 97 | #endif | |
| 98 | #endif |