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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 |