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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | #ifndef __ASM_SMP_H |
| 2 | #define __ASM_SMP_H |
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| 3 | |||
| 4 | /* |
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| 5 | * We need the APIC definitions automatically as part of 'smp.h' |
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| 6 | */ |
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| 7 | #ifndef __ASSEMBLY__ |
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| 8 | #include <linux/config.h> |
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| 9 | #include <linux/kernel.h> |
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| 10 | #include <linux/threads.h> |
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| 11 | #include <linux/cpumask.h> |
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| 12 | #endif |
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| 13 | |||
| 14 | #ifdef CONFIG_X86_LOCAL_APIC |
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| 15 | #ifndef __ASSEMBLY__ |
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| 16 | #include <asm/fixmap.h> |
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| 17 | #include <asm/bitops.h> |
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| 18 | #include <asm/mpspec.h> |
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| 19 | #ifdef CONFIG_X86_IO_APIC |
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| 20 | #include <asm/io_apic.h> |
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| 21 | #endif |
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| 22 | #include <asm/apic.h> |
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| 23 | #endif |
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| 24 | #endif |
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| 25 | |||
| 26 | #define BAD_APICID 0xFFu |
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| 27 | #ifdef CONFIG_SMP |
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| 28 | #ifndef __ASSEMBLY__ |
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| 29 | |||
| 30 | /* |
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| 31 | * Private routines/data |
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| 32 | */ |
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| 33 | |||
| 34 | extern void smp_alloc_memory(void); |
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| 35 | extern int pic_mode; |
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| 36 | extern int smp_num_siblings; |
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| 37 | extern int cpu_sibling_map[]; |
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| 38 | |||
| 39 | extern void smp_flush_tlb(void); |
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| 40 | extern void smp_message_irq(int cpl, void *dev_id, struct pt_regs *regs); |
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| 41 | extern void smp_send_reschedule(int cpu); |
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| 42 | extern void smp_invalidate_rcv(void); /* Process an NMI */ |
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| 43 | extern void (*mtrr_hook) (void); |
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| 44 | extern void zap_low_mappings (void); |
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| 45 | |||
| 46 | #define MAX_APICID 256 |
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| 47 | |||
| 48 | /* |
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| 49 | * This function is needed by all SMP systems. It must _always_ be valid |
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| 50 | * from the initial startup. We map APIC_BASE very early in page_setup(), |
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| 51 | * so this is correct in the x86 case. |
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| 52 | */ |
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| 53 | #define smp_processor_id() (current_thread_info()->cpu) |
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| 54 | |||
| 55 | extern cpumask_t cpu_callout_map; |
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| 56 | |||
| 57 | #define cpu_possible(cpu) cpu_isset(cpu, cpu_callout_map) |
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| 58 | |||
| 59 | /* We don't mark CPUs online until __cpu_up(), so we need another measure */ |
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| 60 | static inline int num_booting_cpus(void) |
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| 61 | { |
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| 62 | return cpus_weight(cpu_callout_map); |
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| 63 | } |
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| 64 | |||
| 65 | extern void map_cpu_to_logical_apicid(void); |
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| 66 | extern void unmap_cpu_to_logical_apicid(int cpu); |
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| 67 | |||
| 68 | #ifdef CONFIG_X86_LOCAL_APIC |
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| 69 | |||
| 70 | #ifdef APIC_DEFINITION |
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| 71 | extern int hard_smp_processor_id(void); |
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| 72 | #else |
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| 73 | #include <mach_apicdef.h> |
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| 74 | static inline int hard_smp_processor_id(void) |
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| 75 | { |
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| 76 | /* we don't want to mark this access volatile - bad code generation */ |
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| 77 | return GET_APIC_ID(*(unsigned long *)(APIC_BASE+APIC_ID)); |
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| 78 | } |
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| 79 | #endif |
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| 80 | |||
| 81 | static __inline int logical_smp_processor_id(void) |
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| 82 | { |
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| 83 | /* we don't want to mark this access volatile - bad code generation */ |
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| 84 | return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE+APIC_LDR)); |
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| 85 | } |
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| 86 | |||
| 87 | #endif |
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| 88 | #endif /* !__ASSEMBLY__ */ |
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| 89 | |||
| 90 | #define NO_PROC_ID 0xFF /* No processor magic marker */ |
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| 91 | |||
| 92 | #endif |
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| 93 | #endif |