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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> | |
11 | #endif | |
12 | ||
13 | #ifdef CONFIG_X86_LOCAL_APIC | |
14 | #ifndef __ASSEMBLY__ | |
15 | #include <asm/fixmap.h> | |
16 | #include <asm/bitops.h> | |
17 | #include <asm/mpspec.h> | |
18 | #ifdef CONFIG_X86_IO_APIC | |
19 | #include <asm/io_apic.h> | |
20 | #endif | |
21 | #include <asm/apic.h> | |
22 | #endif | |
23 | #endif | |
24 | ||
25 | #define BAD_APICID 0xFFu | |
26 | #ifdef CONFIG_SMP | |
27 | #ifndef __ASSEMBLY__ | |
28 | ||
29 | /* | |
30 | * Private routines/data | |
31 | */ | |
32 | ||
33 | extern void smp_alloc_memory(void); | |
34 | extern int pic_mode; | |
35 | extern int smp_num_siblings; | |
36 | extern cpumask_t cpu_sibling_map[]; | |
3dd9d514 | 37 | extern cpumask_t cpu_core_map[]; |
1da177e4 | 38 | |
1da177e4 LT |
39 | extern void (*mtrr_hook) (void); |
40 | extern void zap_low_mappings (void); | |
6fe940d6 LS |
41 | extern void lock_ipi_call_lock(void); |
42 | extern void unlock_ipi_call_lock(void); | |
1da177e4 LT |
43 | |
44 | #define MAX_APICID 256 | |
45 | extern u8 x86_cpu_to_apicid[]; | |
46 | ||
b4033c17 AR |
47 | #define cpu_physical_id(cpu) x86_cpu_to_apicid[cpu] |
48 | ||
e1367daf LS |
49 | #ifdef CONFIG_HOTPLUG_CPU |
50 | extern void cpu_exit_clear(void); | |
51 | extern void cpu_uninit(void); | |
e1367daf LS |
52 | #endif |
53 | ||
1da177e4 LT |
54 | /* |
55 | * This function is needed by all SMP systems. It must _always_ be valid | |
56 | * from the initial startup. We map APIC_BASE very early in page_setup(), | |
57 | * so this is correct in the x86 case. | |
58 | */ | |
39c715b7 | 59 | #define raw_smp_processor_id() (current_thread_info()->cpu) |
1da177e4 LT |
60 | |
61 | extern cpumask_t cpu_callout_map; | |
62 | extern cpumask_t cpu_callin_map; | |
4ad8d383 | 63 | extern cpumask_t cpu_possible_map; |
1da177e4 LT |
64 | |
65 | /* We don't mark CPUs online until __cpu_up(), so we need another measure */ | |
66 | static inline int num_booting_cpus(void) | |
67 | { | |
68 | return cpus_weight(cpu_callout_map); | |
69 | } | |
70 | ||
71 | #ifdef CONFIG_X86_LOCAL_APIC | |
72 | ||
73 | #ifdef APIC_DEFINITION | |
74 | extern int hard_smp_processor_id(void); | |
75 | #else | |
76 | #include <mach_apicdef.h> | |
77 | static inline int hard_smp_processor_id(void) | |
78 | { | |
79 | /* we don't want to mark this access volatile - bad code generation */ | |
80 | return GET_APIC_ID(*(unsigned long *)(APIC_BASE+APIC_ID)); | |
81 | } | |
82 | #endif | |
83 | ||
84 | static __inline int logical_smp_processor_id(void) | |
85 | { | |
86 | /* we don't want to mark this access volatile - bad code generation */ | |
87 | return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE+APIC_LDR)); | |
88 | } | |
89 | ||
90 | #endif | |
f3705136 ZM |
91 | |
92 | extern int __cpu_disable(void); | |
93 | extern void __cpu_die(unsigned int cpu); | |
1da177e4 LT |
94 | #endif /* !__ASSEMBLY__ */ |
95 | ||
b4033c17 AR |
96 | #else /* CONFIG_SMP */ |
97 | ||
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 | |
103 | #endif |