Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | #include <linux/kernel.h> |
| 9 | #include <linux/threads.h> |
| 10 | #include <linux/cpumask.h> |
| 11 | #endif |
| 12 | |
Jan Beulich | 00f1ea6 | 2007-05-02 19:27:04 +0200 | [diff] [blame] | 13 | #if defined(CONFIG_X86_LOCAL_APIC) && !defined(__ASSEMBLY__) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | #include <asm/bitops.h> |
| 15 | #include <asm/mpspec.h> |
Jan Beulich | 00f1ea6 | 2007-05-02 19:27:04 +0200 | [diff] [blame] | 16 | #include <asm/apic.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | #ifdef CONFIG_X86_IO_APIC |
| 18 | #include <asm/io_apic.h> |
| 19 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
Mike Travis | d5a7430 | 2007-10-16 01:24:05 -0700 | [diff] [blame] | 33 | DECLARE_PER_CPU(cpumask_t, cpu_sibling_map); |
Mike Travis | 0835761 | 2007-10-16 01:24:04 -0700 | [diff] [blame] | 34 | DECLARE_PER_CPU(cpumask_t, cpu_core_map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | extern void (*mtrr_hook) (void); |
| 37 | extern void zap_low_mappings (void); |
Li Shaohua | 6fe940d | 2005-06-25 14:54:53 -0700 | [diff] [blame] | 38 | extern void lock_ipi_call_lock(void); |
| 39 | extern void unlock_ipi_call_lock(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | |
| 41 | #define MAX_APICID 256 |
| 42 | extern u8 x86_cpu_to_apicid[]; |
| 43 | |
Ashok Raj | b4033c1 | 2005-11-08 21:42:33 -0800 | [diff] [blame] | 44 | #define cpu_physical_id(cpu) x86_cpu_to_apicid[cpu] |
| 45 | |
Jeremy Fitzhardinge | c70df74 | 2007-07-17 18:37:03 -0700 | [diff] [blame] | 46 | extern void set_cpu_sibling_map(int cpu); |
| 47 | |
Li Shaohua | e1367da | 2005-06-25 14:54:56 -0700 | [diff] [blame] | 48 | #ifdef CONFIG_HOTPLUG_CPU |
| 49 | extern void cpu_exit_clear(void); |
| 50 | extern void cpu_uninit(void); |
Jeremy Fitzhardinge | c70df74 | 2007-07-17 18:37:03 -0700 | [diff] [blame] | 51 | extern void remove_siblinginfo(int cpu); |
Li Shaohua | e1367da | 2005-06-25 14:54:56 -0700 | [diff] [blame] | 52 | #endif |
| 53 | |
Jeremy Fitzhardinge | 01a2f43 | 2007-05-02 19:27:11 +0200 | [diff] [blame] | 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 | } |
Laurent Vivier | 6442eea | 2007-10-17 18:04:33 +0200 | [diff] [blame] | 95 | extern int smp_call_function_mask(cpumask_t mask, |
| 96 | void (*func) (void *info), void *info, |
| 97 | int wait); |
Jeremy Fitzhardinge | 01a2f43 | 2007-05-02 19:27:11 +0200 | [diff] [blame] | 98 | |
| 99 | void native_smp_prepare_boot_cpu(void); |
| 100 | void native_smp_prepare_cpus(unsigned int max_cpus); |
| 101 | int native_cpu_up(unsigned int cpunum); |
| 102 | void native_smp_cpus_done(unsigned int max_cpus); |
| 103 | |
Zachary Amsden | ae5da27 | 2007-02-13 13:26:21 +0100 | [diff] [blame] | 104 | #ifndef CONFIG_PARAVIRT |
| 105 | #define startup_ipi_hook(phys_apicid, start_eip, start_esp) \ |
| 106 | do { } while (0) |
| 107 | #endif |
| 108 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | /* |
| 110 | * This function is needed by all SMP systems. It must _always_ be valid |
| 111 | * from the initial startup. We map APIC_BASE very early in page_setup(), |
| 112 | * so this is correct in the x86 case. |
| 113 | */ |
Jeremy Fitzhardinge | 7c3576d | 2007-05-02 19:27:16 +0200 | [diff] [blame] | 114 | DECLARE_PER_CPU(int, cpu_number); |
| 115 | #define raw_smp_processor_id() (x86_read_percpu(cpu_number)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | |
| 117 | extern cpumask_t cpu_callout_map; |
| 118 | extern cpumask_t cpu_callin_map; |
Zwane Mwaikambo | 4ad8d38 | 2005-09-03 15:56:51 -0700 | [diff] [blame] | 119 | extern cpumask_t cpu_possible_map; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | |
| 121 | /* We don't mark CPUs online until __cpu_up(), so we need another measure */ |
| 122 | static inline int num_booting_cpus(void) |
| 123 | { |
| 124 | return cpus_weight(cpu_callout_map); |
| 125 | } |
| 126 | |
Fernando Luis Vazquez Cao | a36166c | 2007-05-09 02:33:27 -0700 | [diff] [blame] | 127 | extern int safe_smp_processor_id(void); |
| 128 | extern int __cpu_disable(void); |
| 129 | extern void __cpu_die(unsigned int cpu); |
| 130 | extern unsigned int num_processors; |
| 131 | |
Jeremy Fitzhardinge | 724faa8 | 2007-07-17 18:37:03 -0700 | [diff] [blame] | 132 | void __cpuinit smp_store_cpu_info(int id); |
| 133 | |
Fernando Luis Vazquez Cao | a36166c | 2007-05-09 02:33:27 -0700 | [diff] [blame] | 134 | #endif /* !__ASSEMBLY__ */ |
| 135 | |
| 136 | #else /* CONFIG_SMP */ |
| 137 | |
| 138 | #define safe_smp_processor_id() 0 |
| 139 | #define cpu_physical_id(cpu) boot_cpu_physical_apicid |
| 140 | |
| 141 | #define NO_PROC_ID 0xFF /* No processor magic marker */ |
| 142 | |
| 143 | #endif /* CONFIG_SMP */ |
| 144 | |
| 145 | #ifndef __ASSEMBLY__ |
| 146 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | #ifdef CONFIG_X86_LOCAL_APIC |
| 148 | |
| 149 | #ifdef APIC_DEFINITION |
| 150 | extern int hard_smp_processor_id(void); |
| 151 | #else |
| 152 | #include <mach_apicdef.h> |
| 153 | static inline int hard_smp_processor_id(void) |
| 154 | { |
| 155 | /* we don't want to mark this access volatile - bad code generation */ |
| 156 | return GET_APIC_ID(*(unsigned long *)(APIC_BASE+APIC_ID)); |
| 157 | } |
Fernando Luis Vazquez Cao | a36166c | 2007-05-09 02:33:27 -0700 | [diff] [blame] | 158 | #endif /* APIC_DEFINITION */ |
Zwane Mwaikambo | f370513 | 2005-06-25 14:54:50 -0700 | [diff] [blame] | 159 | |
Fernando Luis Vazquez Cao | a36166c | 2007-05-09 02:33:27 -0700 | [diff] [blame] | 160 | #else /* CONFIG_X86_LOCAL_APIC */ |
Andi Kleen | 874c4fe | 2006-09-26 10:52:26 +0200 | [diff] [blame] | 161 | |
Fernando Luis Vazquez Cao | a36166c | 2007-05-09 02:33:27 -0700 | [diff] [blame] | 162 | #ifndef CONFIG_SMP |
Fernando Luis Vazquez Cao | 2f4dfe2 | 2007-05-09 02:33:25 -0700 | [diff] [blame] | 163 | #define hard_smp_processor_id() 0 |
Fernando Luis Vazquez Cao | a36166c | 2007-05-09 02:33:27 -0700 | [diff] [blame] | 164 | #endif |
Ashok Raj | b4033c1 | 2005-11-08 21:42:33 -0800 | [diff] [blame] | 165 | |
Fernando Luis Vazquez Cao | a36166c | 2007-05-09 02:33:27 -0700 | [diff] [blame] | 166 | #endif /* CONFIG_X86_LOCAL_APIC */ |
Jiri Kosina | 815a965 | 2006-10-06 11:11:56 +0200 | [diff] [blame] | 167 | |
| 168 | extern u8 apicid_2_node[]; |
| 169 | |
Andi Kleen | 874c4fe | 2006-09-26 10:52:26 +0200 | [diff] [blame] | 170 | #ifdef CONFIG_X86_LOCAL_APIC |
| 171 | static __inline int logical_smp_processor_id(void) |
| 172 | { |
| 173 | /* we don't want to mark this access volatile - bad code generation */ |
| 174 | return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE+APIC_LDR)); |
| 175 | } |
| 176 | #endif |
| 177 | #endif |
| 178 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | #endif |