Commit | Line | Data |
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c27cfeff GC |
1 | #ifndef _ASM_X86_SMP_H_ |
2 | #define _ASM_X86_SMP_H_ | |
3 | #ifndef __ASSEMBLY__ | |
53ebef49 | 4 | #include <linux/cpumask.h> |
93b016f8 | 5 | #include <linux/init.h> |
7e1efc0c | 6 | #include <asm/percpu.h> |
53ebef49 | 7 | |
b23dab08 GC |
8 | /* |
9 | * We need the APIC definitions automatically as part of 'smp.h' | |
10 | */ | |
11 | #ifdef CONFIG_X86_LOCAL_APIC | |
12 | # include <asm/mpspec.h> | |
13 | # include <asm/apic.h> | |
14 | # ifdef CONFIG_X86_IO_APIC | |
15 | # include <asm/io_apic.h> | |
16 | # endif | |
17 | #endif | |
18 | #include <asm/pda.h> | |
19 | #include <asm/thread_info.h> | |
20 | ||
53ebef49 | 21 | extern cpumask_t cpu_callout_map; |
8be9ac85 GC |
22 | extern cpumask_t cpu_initialized; |
23 | extern cpumask_t cpu_callin_map; | |
24 | ||
25 | extern void (*mtrr_hook)(void); | |
26 | extern void zap_low_mappings(void); | |
53ebef49 GC |
27 | |
28 | extern int smp_num_siblings; | |
29 | extern unsigned int num_processors; | |
cb3c8b90 | 30 | extern cpumask_t cpu_initialized; |
c27cfeff | 31 | |
7e1efc0c GOC |
32 | DECLARE_PER_CPU(cpumask_t, cpu_sibling_map); |
33 | DECLARE_PER_CPU(cpumask_t, cpu_core_map); | |
34 | DECLARE_PER_CPU(u16, cpu_llc_id); | |
23ca4bba MT |
35 | |
36 | DECLARE_EARLY_PER_CPU(u16, x86_cpu_to_apicid); | |
37 | DECLARE_EARLY_PER_CPU(u16, x86_bios_cpu_apicid); | |
7e1efc0c | 38 | |
9d97d0da GOC |
39 | /* Static state in head.S used to set up a CPU */ |
40 | extern struct { | |
41 | void *sp; | |
42 | unsigned short ss; | |
43 | } stack_start; | |
44 | ||
16694024 GC |
45 | struct smp_ops { |
46 | void (*smp_prepare_boot_cpu)(void); | |
47 | void (*smp_prepare_cpus)(unsigned max_cpus); | |
48 | int (*cpu_up)(unsigned cpu); | |
49 | void (*smp_cpus_done)(unsigned max_cpus); | |
50 | ||
51 | void (*smp_send_stop)(void); | |
52 | void (*smp_send_reschedule)(int cpu); | |
53 | int (*smp_call_function_mask)(cpumask_t mask, | |
54 | void (*func)(void *info), void *info, | |
55 | int wait); | |
56 | }; | |
57 | ||
14522076 GC |
58 | /* Globals due to paravirt */ |
59 | extern void set_cpu_sibling_map(int cpu); | |
60 | ||
c76cb368 | 61 | #ifdef CONFIG_SMP |
d0173aea GOC |
62 | #ifndef CONFIG_PARAVIRT |
63 | #define startup_ipi_hook(phys_apicid, start_eip, start_esp) do { } while (0) | |
64 | #endif | |
c76cb368 | 65 | extern struct smp_ops smp_ops; |
8678969e | 66 | |
377d6984 GC |
67 | static inline void smp_send_stop(void) |
68 | { | |
69 | smp_ops.smp_send_stop(); | |
70 | } | |
71 | ||
1e3fac83 GC |
72 | static inline void smp_prepare_boot_cpu(void) |
73 | { | |
74 | smp_ops.smp_prepare_boot_cpu(); | |
75 | } | |
76 | ||
7557da67 GC |
77 | static inline void smp_prepare_cpus(unsigned int max_cpus) |
78 | { | |
79 | smp_ops.smp_prepare_cpus(max_cpus); | |
80 | } | |
81 | ||
c5597649 GC |
82 | static inline void smp_cpus_done(unsigned int max_cpus) |
83 | { | |
84 | smp_ops.smp_cpus_done(max_cpus); | |
85 | } | |
86 | ||
71d19549 GC |
87 | static inline int __cpu_up(unsigned int cpu) |
88 | { | |
89 | return smp_ops.cpu_up(cpu); | |
90 | } | |
91 | ||
8678969e GC |
92 | static inline void smp_send_reschedule(int cpu) |
93 | { | |
94 | smp_ops.smp_send_reschedule(cpu); | |
95 | } | |
64b1a21e GC |
96 | |
97 | static inline int smp_call_function_mask(cpumask_t mask, | |
98 | void (*func) (void *info), void *info, | |
99 | int wait) | |
100 | { | |
101 | return smp_ops.smp_call_function_mask(mask, func, info, wait); | |
102 | } | |
71d19549 | 103 | |
1e3fac83 | 104 | void native_smp_prepare_boot_cpu(void); |
7557da67 | 105 | void native_smp_prepare_cpus(unsigned int max_cpus); |
c5597649 | 106 | void native_smp_cpus_done(unsigned int max_cpus); |
71d19549 | 107 | int native_cpu_up(unsigned int cpunum); |
93b016f8 | 108 | |
69c18c15 GC |
109 | extern int __cpu_disable(void); |
110 | extern void __cpu_die(unsigned int cpu); | |
111 | ||
1d89a7f0 | 112 | void smp_store_cpu_info(int id); |
c70dcb74 | 113 | #define cpu_physical_id(cpu) per_cpu(x86_cpu_to_apicid, cpu) |
a9c057c1 GC |
114 | |
115 | /* We don't mark CPUs online until __cpu_up(), so we need another measure */ | |
116 | static inline int num_booting_cpus(void) | |
117 | { | |
118 | return cpus_weight(cpu_callout_map); | |
119 | } | |
4a701737 IM |
120 | #endif /* CONFIG_SMP */ |
121 | ||
122 | #if defined(CONFIG_SMP) && defined(CONFIG_HOTPLUG_CPU) | |
123 | extern void prefill_possible_map(void); | |
329513a3 YL |
124 | #else |
125 | static inline void prefill_possible_map(void) | |
126 | { | |
127 | } | |
4a701737 | 128 | #endif |
a9c057c1 | 129 | |
2fe60147 AS |
130 | extern unsigned disabled_cpus __cpuinitdata; |
131 | ||
a9c057c1 GC |
132 | #ifdef CONFIG_X86_32_SMP |
133 | /* | |
134 | * This function is needed by all SMP systems. It must _always_ be valid | |
135 | * from the initial startup. We map APIC_BASE very early in page_setup(), | |
136 | * so this is correct in the x86 case. | |
137 | */ | |
138 | DECLARE_PER_CPU(int, cpu_number); | |
139 | #define raw_smp_processor_id() (x86_read_percpu(cpu_number)) | |
140 | extern int safe_smp_processor_id(void); | |
141 | ||
142 | #elif defined(CONFIG_X86_64_SMP) | |
143 | #define raw_smp_processor_id() read_pda(cpunumber) | |
144 | ||
145 | #define stack_smp_processor_id() \ | |
146 | ({ \ | |
147 | struct thread_info *ti; \ | |
148 | __asm__("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK)); \ | |
149 | ti->cpu; \ | |
150 | }) | |
151 | #define safe_smp_processor_id() smp_processor_id() | |
152 | ||
153 | #else /* !CONFIG_X86_32_SMP && !CONFIG_X86_64_SMP */ | |
c70dcb74 | 154 | #define cpu_physical_id(cpu) boot_cpu_physical_apicid |
a9c057c1 GC |
155 | #define safe_smp_processor_id() 0 |
156 | #define stack_smp_processor_id() 0 | |
c76cb368 | 157 | #endif |
16694024 | 158 | |
1b000843 GC |
159 | #ifdef CONFIG_X86_LOCAL_APIC |
160 | ||
1b374e4d | 161 | #ifndef CONFIG_X86_64 |
1b000843 GC |
162 | static inline int logical_smp_processor_id(void) |
163 | { | |
164 | /* we don't want to mark this access volatile - bad code generation */ | |
165 | return GET_APIC_LOGICAL_ID(*(u32 *)(APIC_BASE + APIC_LDR)); | |
166 | } | |
167 | ||
4c9961d5 | 168 | #include <mach_apicdef.h> |
05f2d12c JS |
169 | static inline unsigned int read_apic_id(void) |
170 | { | |
4c9961d5 YL |
171 | unsigned int reg; |
172 | ||
173 | reg = *(u32 *)(APIC_BASE + APIC_ID); | |
174 | ||
175 | return GET_APIC_ID(reg); | |
05f2d12c | 176 | } |
ac23d4ee JS |
177 | #endif |
178 | ||
05f2d12c | 179 | |
0c81c746 | 180 | # if defined(APIC_DEFINITION) || defined(CONFIG_X86_64) |
1b000843 GC |
181 | extern int hard_smp_processor_id(void); |
182 | # else | |
4c9961d5 | 183 | #include <mach_apicdef.h> |
1b000843 GC |
184 | static inline int hard_smp_processor_id(void) |
185 | { | |
186 | /* we don't want to mark this access volatile - bad code generation */ | |
4c9961d5 | 187 | return read_apic_id(); |
1b000843 GC |
188 | } |
189 | # endif /* APIC_DEFINITION */ | |
190 | ||
191 | #else /* CONFIG_X86_LOCAL_APIC */ | |
192 | ||
193 | # ifndef CONFIG_SMP | |
194 | # define hard_smp_processor_id() 0 | |
195 | # endif | |
196 | ||
197 | #endif /* CONFIG_X86_LOCAL_APIC */ | |
198 | ||
1dbb4726 | 199 | #ifdef CONFIG_HOTPLUG_CPU |
1dbb4726 | 200 | extern void cpu_uninit(void); |
1dbb4726 GC |
201 | #endif |
202 | ||
639acb16 GC |
203 | extern void lock_ipi_call_lock(void); |
204 | extern void unlock_ipi_call_lock(void); | |
c27cfeff GC |
205 | #endif /* __ASSEMBLY__ */ |
206 | #endif |