projects / linux-2.6-block.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 LT |
39 | |
| 40 | extern void smp_flush_tlb(void); | |
| 41 | extern void smp_message_irq(int cpl, void *dev_id, struct pt_regs *regs); | |
| 42 | extern void smp_invalidate_rcv(void); /* Process an NMI */ | |
| 43 | extern void (*mtrr_hook) (void); | |
| 44 | extern void zap_low_mappings (void); | |
| 45 | ||
| 46 | #define MAX_APICID 256 | |
| 47 | extern u8 x86_cpu_to_apicid[]; | |
| 48 | ||
| 49 | /* | |
| 50 | * This function is needed by all SMP systems. It must _always_ be valid | |
| 51 | * from the initial startup. We map APIC_BASE very early in page_setup(), | |
| 52 | * so this is correct in the x86 case. | |
| 53 | */ | |
| 39c715b7 | 54 | #define raw_smp_processor_id() (current_thread_info()->cpu) |
| 1da177e4 LT |
55 | |
| 56 | extern cpumask_t cpu_callout_map; | |
| 57 | extern cpumask_t cpu_callin_map; | |
| 58 | #define cpu_possible_map cpu_callout_map | |
| 59 | ||
| 60 | /* We don't mark CPUs online until __cpu_up(), so we need another measure */ | |
| 61 | static inline int num_booting_cpus(void) | |
| 62 | { | |
| 63 | return cpus_weight(cpu_callout_map); | |
| 64 | } | |
| 65 | ||
| 66 | #ifdef CONFIG_X86_LOCAL_APIC | |
| 67 | ||
| 68 | #ifdef APIC_DEFINITION | |
| 69 | extern int hard_smp_processor_id(void); | |
| 70 | #else | |
| 71 | #include <mach_apicdef.h> | |
| 72 | static inline int hard_smp_processor_id(void) | |
| 73 | { | |
| 74 | /* we don't want to mark this access volatile - bad code generation */ | |
| 75 | return GET_APIC_ID(*(unsigned long *)(APIC_BASE+APIC_ID)); | |
| 76 | } | |
| 77 | #endif | |
| 78 | ||
| 79 | static __inline int logical_smp_processor_id(void) | |
| 80 | { | |
| 81 | /* we don't want to mark this access volatile - bad code generation */ | |
| 82 | return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE+APIC_LDR)); | |
| 83 | } | |
| 84 | ||
| 85 | #endif | |
| 86 | #endif /* !__ASSEMBLY__ */ | |
| 87 | ||
| 88 | #define NO_PROC_ID 0xFF /* No processor magic marker */ | |
| 89 | ||
| 90 | #endif | |
| 91 | #endif |