Commit | Line | Data |
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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 | ||
00f1ea69 | 13 | #if defined(CONFIG_X86_LOCAL_APIC) && !defined(__ASSEMBLY__) |
1da177e4 LT |
14 | #include <asm/bitops.h> |
15 | #include <asm/mpspec.h> | |
00f1ea69 | 16 | #include <asm/apic.h> |
1da177e4 LT |
17 | #ifdef CONFIG_X86_IO_APIC |
18 | #include <asm/io_apic.h> | |
19 | #endif | |
1da177e4 LT |
20 | #endif |
21 | ||
22 | #define BAD_APICID 0xFFu | |
23 | #ifdef CONFIG_SMP | |
24 | #ifndef __ASSEMBLY__ | |
25 | ||
26 | /* | |
27 | * Private routines/data | |
28 | */ | |
29 | ||
30 | extern void smp_alloc_memory(void); | |
31 | extern int pic_mode; | |
32 | extern int smp_num_siblings; | |
33 | extern cpumask_t cpu_sibling_map[]; | |
3dd9d514 | 34 | extern cpumask_t cpu_core_map[]; |
1da177e4 | 35 | |
1da177e4 LT |
36 | extern void (*mtrr_hook) (void); |
37 | extern void zap_low_mappings (void); | |
6fe940d6 LS |
38 | extern void lock_ipi_call_lock(void); |
39 | extern void unlock_ipi_call_lock(void); | |
1da177e4 LT |
40 | |
41 | #define MAX_APICID 256 | |
42 | extern u8 x86_cpu_to_apicid[]; | |
43 | ||
b4033c17 AR |
44 | #define cpu_physical_id(cpu) x86_cpu_to_apicid[cpu] |
45 | ||
c70df743 JF |
46 | extern void set_cpu_sibling_map(int cpu); |
47 | ||
e1367daf LS |
48 | #ifdef CONFIG_HOTPLUG_CPU |
49 | extern void cpu_exit_clear(void); | |
50 | extern void cpu_uninit(void); | |
c70df743 | 51 | extern void remove_siblinginfo(int cpu); |
e1367daf LS |
52 | #endif |
53 | ||
01a2f435 JF |
54 | struct smp_ops |
55 | { | |
56 | void (*smp_prepare_boot_cpu)(void); | |
57 | void (*smp_prepare_cpus)(unsigned max_cpus); | |
58 | int (*cpu_up)(unsigned cpu); | |
59 | void (*smp_cpus_done)(unsigned max_cpus); | |
60 | ||
61 | void (*smp_send_stop)(void); | |
62 | void (*smp_send_reschedule)(int cpu); | |
63 | int (*smp_call_function_mask)(cpumask_t mask, | |
64 | void (*func)(void *info), void *info, | |
65 | int wait); | |
66 | }; | |
67 | ||
68 | extern struct smp_ops smp_ops; | |
69 | ||
70 | static inline void smp_prepare_boot_cpu(void) | |
71 | { | |
72 | smp_ops.smp_prepare_boot_cpu(); | |
73 | } | |
74 | static inline void smp_prepare_cpus(unsigned int max_cpus) | |
75 | { | |
76 | smp_ops.smp_prepare_cpus(max_cpus); | |
77 | } | |
78 | static inline int __cpu_up(unsigned int cpu) | |
79 | { | |
80 | return smp_ops.cpu_up(cpu); | |
81 | } | |
82 | static inline void smp_cpus_done(unsigned int max_cpus) | |
83 | { | |
84 | smp_ops.smp_cpus_done(max_cpus); | |
85 | } | |
86 | ||
87 | static inline void smp_send_stop(void) | |
88 | { | |
89 | smp_ops.smp_send_stop(); | |
90 | } | |
91 | static inline void smp_send_reschedule(int cpu) | |
92 | { | |
93 | smp_ops.smp_send_reschedule(cpu); | |
94 | } | |
95 | static inline int smp_call_function_mask(cpumask_t mask, | |
96 | void (*func) (void *info), void *info, | |
97 | int wait) | |
98 | { | |
99 | return smp_ops.smp_call_function_mask(mask, func, info, wait); | |
100 | } | |
101 | ||
102 | void native_smp_prepare_boot_cpu(void); | |
103 | void native_smp_prepare_cpus(unsigned int max_cpus); | |
104 | int native_cpu_up(unsigned int cpunum); | |
105 | void native_smp_cpus_done(unsigned int max_cpus); | |
106 | ||
ae5da273 ZA |
107 | #ifndef CONFIG_PARAVIRT |
108 | #define startup_ipi_hook(phys_apicid, start_eip, start_esp) \ | |
109 | do { } while (0) | |
110 | #endif | |
111 | ||
1da177e4 LT |
112 | /* |
113 | * This function is needed by all SMP systems. It must _always_ be valid | |
114 | * from the initial startup. We map APIC_BASE very early in page_setup(), | |
115 | * so this is correct in the x86 case. | |
116 | */ | |
7c3576d2 JF |
117 | DECLARE_PER_CPU(int, cpu_number); |
118 | #define raw_smp_processor_id() (x86_read_percpu(cpu_number)) | |
1da177e4 LT |
119 | |
120 | extern cpumask_t cpu_callout_map; | |
121 | extern cpumask_t cpu_callin_map; | |
4ad8d383 | 122 | extern cpumask_t cpu_possible_map; |
1da177e4 LT |
123 | |
124 | /* We don't mark CPUs online until __cpu_up(), so we need another measure */ | |
125 | static inline int num_booting_cpus(void) | |
126 | { | |
127 | return cpus_weight(cpu_callout_map); | |
128 | } | |
129 | ||
dc2bc768 | 130 | extern int safe_smp_processor_id(void); |
f3705136 ZM |
131 | extern int __cpu_disable(void); |
132 | extern void __cpu_die(unsigned int cpu); | |
73fea175 | 133 | extern unsigned int num_processors; |
874c4fe3 | 134 | |
724faa89 JF |
135 | void __cpuinit smp_store_cpu_info(int id); |
136 | ||
1da177e4 LT |
137 | #endif /* !__ASSEMBLY__ */ |
138 | ||
b4033c17 AR |
139 | #else /* CONFIG_SMP */ |
140 | ||
dc2bc768 | 141 | #define safe_smp_processor_id() 0 |
b4033c17 AR |
142 | #define cpu_physical_id(cpu) boot_cpu_physical_apicid |
143 | ||
1da177e4 LT |
144 | #define NO_PROC_ID 0xFF /* No processor magic marker */ |
145 | ||
2f4dfe20 | 146 | #endif /* CONFIG_SMP */ |
874c4fe3 AK |
147 | |
148 | #ifndef __ASSEMBLY__ | |
815a965b | 149 | |
a36166c6 FLVC |
150 | #ifdef CONFIG_X86_LOCAL_APIC |
151 | ||
152 | #ifdef APIC_DEFINITION | |
153 | extern int hard_smp_processor_id(void); | |
154 | #else | |
155 | #include <mach_apicdef.h> | |
156 | static inline int hard_smp_processor_id(void) | |
157 | { | |
158 | /* we don't want to mark this access volatile - bad code generation */ | |
159 | return GET_APIC_ID(*(unsigned long *)(APIC_BASE+APIC_ID)); | |
160 | } | |
161 | #endif /* APIC_DEFINITION */ | |
162 | ||
163 | #else /* CONFIG_X86_LOCAL_APIC */ | |
164 | ||
165 | #ifndef CONFIG_SMP | |
166 | #define hard_smp_processor_id() 0 | |
167 | #endif | |
168 | ||
169 | #endif /* CONFIG_X86_LOCAL_APIC */ | |
170 | ||
815a965b JK |
171 | extern u8 apicid_2_node[]; |
172 | ||
874c4fe3 AK |
173 | #ifdef CONFIG_X86_LOCAL_APIC |
174 | static __inline int logical_smp_processor_id(void) | |
175 | { | |
176 | /* we don't want to mark this access volatile - bad code generation */ | |
177 | return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE+APIC_LDR)); | |
178 | } | |
179 | #endif | |
180 | #endif | |
181 | ||
1da177e4 | 182 | #endif |