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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__ | |
1da177e4 LT |
8 | #include <linux/kernel.h> |
9 | #include <linux/threads.h> | |
10 | #include <linux/cpumask.h> | |
b2938f88 | 11 | #include <asm/pda.h> |
1da177e4 LT |
12 | #endif |
13 | ||
00f1ea69 | 14 | #if defined(CONFIG_X86_LOCAL_APIC) && !defined(__ASSEMBLY__) |
1da177e4 LT |
15 | #include <asm/bitops.h> |
16 | #include <asm/mpspec.h> | |
00f1ea69 | 17 | #include <asm/apic.h> |
1da177e4 LT |
18 | #ifdef CONFIG_X86_IO_APIC |
19 | #include <asm/io_apic.h> | |
20 | #endif | |
1da177e4 LT |
21 | #endif |
22 | ||
23 | #define BAD_APICID 0xFFu | |
24 | #ifdef CONFIG_SMP | |
25 | #ifndef __ASSEMBLY__ | |
26 | ||
27 | /* | |
28 | * Private routines/data | |
29 | */ | |
30 | ||
31 | extern void smp_alloc_memory(void); | |
32 | extern int pic_mode; | |
33 | extern int smp_num_siblings; | |
34 | extern cpumask_t cpu_sibling_map[]; | |
3dd9d514 | 35 | extern cpumask_t cpu_core_map[]; |
1da177e4 | 36 | |
1da177e4 LT |
37 | extern void (*mtrr_hook) (void); |
38 | extern void zap_low_mappings (void); | |
6fe940d6 LS |
39 | extern void lock_ipi_call_lock(void); |
40 | extern void unlock_ipi_call_lock(void); | |
1da177e4 LT |
41 | |
42 | #define MAX_APICID 256 | |
43 | extern u8 x86_cpu_to_apicid[]; | |
44 | ||
b4033c17 AR |
45 | #define cpu_physical_id(cpu) x86_cpu_to_apicid[cpu] |
46 | ||
e1367daf LS |
47 | #ifdef CONFIG_HOTPLUG_CPU |
48 | extern void cpu_exit_clear(void); | |
49 | extern void cpu_uninit(void); | |
e1367daf LS |
50 | #endif |
51 | ||
ae5da273 ZA |
52 | #ifndef CONFIG_PARAVIRT |
53 | #define startup_ipi_hook(phys_apicid, start_eip, start_esp) \ | |
54 | do { } while (0) | |
55 | #endif | |
56 | ||
1da177e4 LT |
57 | /* |
58 | * This function is needed by all SMP systems. It must _always_ be valid | |
59 | * from the initial startup. We map APIC_BASE very early in page_setup(), | |
60 | * so this is correct in the x86 case. | |
61 | */ | |
b2938f88 | 62 | #define raw_smp_processor_id() (read_pda(cpu_number)) |
1da177e4 LT |
63 | |
64 | extern cpumask_t cpu_callout_map; | |
65 | extern cpumask_t cpu_callin_map; | |
4ad8d383 | 66 | extern cpumask_t cpu_possible_map; |
1da177e4 LT |
67 | |
68 | /* We don't mark CPUs online until __cpu_up(), so we need another measure */ | |
69 | static inline int num_booting_cpus(void) | |
70 | { | |
71 | return cpus_weight(cpu_callout_map); | |
72 | } | |
73 | ||
74 | #ifdef CONFIG_X86_LOCAL_APIC | |
75 | ||
76 | #ifdef APIC_DEFINITION | |
77 | extern int hard_smp_processor_id(void); | |
78 | #else | |
79 | #include <mach_apicdef.h> | |
80 | static inline int hard_smp_processor_id(void) | |
81 | { | |
82 | /* we don't want to mark this access volatile - bad code generation */ | |
83 | return GET_APIC_ID(*(unsigned long *)(APIC_BASE+APIC_ID)); | |
84 | } | |
85 | #endif | |
1da177e4 | 86 | #endif |
f3705136 | 87 | |
dc2bc768 | 88 | extern int safe_smp_processor_id(void); |
f3705136 ZM |
89 | extern int __cpu_disable(void); |
90 | extern void __cpu_die(unsigned int cpu); | |
73fea175 | 91 | extern unsigned int num_processors; |
874c4fe3 | 92 | |
1da177e4 LT |
93 | #endif /* !__ASSEMBLY__ */ |
94 | ||
b4033c17 AR |
95 | #else /* CONFIG_SMP */ |
96 | ||
dc2bc768 | 97 | #define safe_smp_processor_id() 0 |
b4033c17 AR |
98 | #define cpu_physical_id(cpu) boot_cpu_physical_apicid |
99 | ||
1da177e4 LT |
100 | #define NO_PROC_ID 0xFF /* No processor magic marker */ |
101 | ||
102 | #endif | |
874c4fe3 AK |
103 | |
104 | #ifndef __ASSEMBLY__ | |
815a965b JK |
105 | |
106 | extern u8 apicid_2_node[]; | |
107 | ||
874c4fe3 AK |
108 | #ifdef CONFIG_X86_LOCAL_APIC |
109 | static __inline int logical_smp_processor_id(void) | |
110 | { | |
111 | /* we don't want to mark this access volatile - bad code generation */ | |
112 | return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE+APIC_LDR)); | |
113 | } | |
114 | #endif | |
115 | #endif | |
116 | ||
1da177e4 | 117 | #endif |