Vegard Nossum | 77ef50a | 2008-06-18 17:08:48 +0200 | [diff] [blame] | 1 | #ifndef ASM_X86__SMP_H |
| 2 | #define ASM_X86__SMP_H |
Glauber Costa | c27cfef | 2008-03-03 14:12:29 -0300 | [diff] [blame] | 3 | #ifndef __ASSEMBLY__ |
Glauber Costa | 53ebef4 | 2008-03-03 14:12:31 -0300 | [diff] [blame] | 4 | #include <linux/cpumask.h> |
Glauber Costa | 93b016f | 2008-03-03 14:12:40 -0300 | [diff] [blame] | 5 | #include <linux/init.h> |
Glauber de Oliveira Costa | 7e1efc0 | 2008-03-19 14:25:18 -0300 | [diff] [blame] | 6 | #include <asm/percpu.h> |
Glauber Costa | 53ebef4 | 2008-03-03 14:12:31 -0300 | [diff] [blame] | 7 | |
Glauber Costa | b23dab0 | 2008-03-27 14:06:00 -0300 | [diff] [blame] | 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 | |
Glauber Costa | 53ebef4 | 2008-03-03 14:12:31 -0300 | [diff] [blame] | 21 | extern cpumask_t cpu_callout_map; |
Glauber Costa | 8be9ac8 | 2008-03-27 14:06:04 -0300 | [diff] [blame] | 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); |
Glauber Costa | 53ebef4 | 2008-03-03 14:12:31 -0300 | [diff] [blame] | 27 | |
Jeremy Fitzhardinge | 7c33b1e | 2008-07-08 15:06:29 -0700 | [diff] [blame] | 28 | extern int __cpuinit get_local_pda(int cpu); |
| 29 | |
Glauber Costa | 53ebef4 | 2008-03-03 14:12:31 -0300 | [diff] [blame] | 30 | extern int smp_num_siblings; |
| 31 | extern unsigned int num_processors; |
Glauber de Oliveira Costa | cb3c8b9 | 2008-03-19 14:25:59 -0300 | [diff] [blame] | 32 | extern cpumask_t cpu_initialized; |
Glauber Costa | c27cfef | 2008-03-03 14:12:29 -0300 | [diff] [blame] | 33 | |
Glauber de Oliveira Costa | 7e1efc0 | 2008-03-19 14:25:18 -0300 | [diff] [blame] | 34 | DECLARE_PER_CPU(cpumask_t, cpu_sibling_map); |
| 35 | DECLARE_PER_CPU(cpumask_t, cpu_core_map); |
| 36 | DECLARE_PER_CPU(u16, cpu_llc_id); |
Jaswinder Singh | fb26132 | 2008-07-21 21:36:40 +0530 | [diff] [blame] | 37 | #ifdef CONFIG_X86_32 |
| 38 | DECLARE_PER_CPU(int, cpu_number); |
| 39 | #endif |
Mike Travis | 23ca4bb | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 40 | |
| 41 | DECLARE_EARLY_PER_CPU(u16, x86_cpu_to_apicid); |
| 42 | DECLARE_EARLY_PER_CPU(u16, x86_bios_cpu_apicid); |
Glauber de Oliveira Costa | 7e1efc0 | 2008-03-19 14:25:18 -0300 | [diff] [blame] | 43 | |
Glauber de Oliveira Costa | 9d97d0d | 2008-03-19 14:25:57 -0300 | [diff] [blame] | 44 | /* Static state in head.S used to set up a CPU */ |
| 45 | extern struct { |
| 46 | void *sp; |
| 47 | unsigned short ss; |
| 48 | } stack_start; |
| 49 | |
Glauber Costa | 1669402 | 2008-03-03 14:12:32 -0300 | [diff] [blame] | 50 | struct smp_ops { |
| 51 | void (*smp_prepare_boot_cpu)(void); |
| 52 | void (*smp_prepare_cpus)(unsigned max_cpus); |
| 53 | int (*cpu_up)(unsigned cpu); |
| 54 | void (*smp_cpus_done)(unsigned max_cpus); |
| 55 | |
| 56 | void (*smp_send_stop)(void); |
| 57 | void (*smp_send_reschedule)(int cpu); |
Jens Axboe | 3b16cf8 | 2008-06-26 11:21:54 +0200 | [diff] [blame] | 58 | |
| 59 | void (*send_call_func_ipi)(cpumask_t mask); |
| 60 | void (*send_call_func_single_ipi)(int cpu); |
Glauber Costa | 1669402 | 2008-03-03 14:12:32 -0300 | [diff] [blame] | 61 | }; |
| 62 | |
Glauber Costa | 1452207 | 2008-03-03 14:12:59 -0300 | [diff] [blame] | 63 | /* Globals due to paravirt */ |
| 64 | extern void set_cpu_sibling_map(int cpu); |
| 65 | |
Glauber Costa | c76cb36 | 2008-03-03 14:12:33 -0300 | [diff] [blame] | 66 | #ifdef CONFIG_SMP |
Glauber de Oliveira Costa | d0173ae | 2008-03-19 14:24:59 -0300 | [diff] [blame] | 67 | #ifndef CONFIG_PARAVIRT |
| 68 | #define startup_ipi_hook(phys_apicid, start_eip, start_esp) do { } while (0) |
| 69 | #endif |
Glauber Costa | c76cb36 | 2008-03-03 14:12:33 -0300 | [diff] [blame] | 70 | extern struct smp_ops smp_ops; |
Glauber Costa | 8678969 | 2008-03-03 14:12:34 -0300 | [diff] [blame] | 71 | |
Glauber Costa | 377d698 | 2008-03-03 14:12:51 -0300 | [diff] [blame] | 72 | static inline void smp_send_stop(void) |
| 73 | { |
| 74 | smp_ops.smp_send_stop(); |
| 75 | } |
| 76 | |
Glauber Costa | 1e3fac8 | 2008-03-03 14:12:37 -0300 | [diff] [blame] | 77 | static inline void smp_prepare_boot_cpu(void) |
| 78 | { |
| 79 | smp_ops.smp_prepare_boot_cpu(); |
| 80 | } |
| 81 | |
Glauber Costa | 7557da6 | 2008-03-03 14:12:38 -0300 | [diff] [blame] | 82 | static inline void smp_prepare_cpus(unsigned int max_cpus) |
| 83 | { |
| 84 | smp_ops.smp_prepare_cpus(max_cpus); |
| 85 | } |
| 86 | |
Glauber Costa | c559764 | 2008-03-03 14:12:39 -0300 | [diff] [blame] | 87 | static inline void smp_cpus_done(unsigned int max_cpus) |
| 88 | { |
| 89 | smp_ops.smp_cpus_done(max_cpus); |
| 90 | } |
| 91 | |
Glauber Costa | 71d1954 | 2008-03-03 14:12:36 -0300 | [diff] [blame] | 92 | static inline int __cpu_up(unsigned int cpu) |
| 93 | { |
| 94 | return smp_ops.cpu_up(cpu); |
| 95 | } |
| 96 | |
Glauber Costa | 8678969 | 2008-03-03 14:12:34 -0300 | [diff] [blame] | 97 | static inline void smp_send_reschedule(int cpu) |
| 98 | { |
| 99 | smp_ops.smp_send_reschedule(cpu); |
| 100 | } |
Glauber Costa | 64b1a21e0 | 2008-03-03 14:12:35 -0300 | [diff] [blame] | 101 | |
Jens Axboe | 3b16cf8 | 2008-06-26 11:21:54 +0200 | [diff] [blame] | 102 | static inline void arch_send_call_function_single_ipi(int cpu) |
Glauber Costa | 64b1a21e0 | 2008-03-03 14:12:35 -0300 | [diff] [blame] | 103 | { |
Jens Axboe | 3b16cf8 | 2008-06-26 11:21:54 +0200 | [diff] [blame] | 104 | smp_ops.send_call_func_single_ipi(cpu); |
| 105 | } |
| 106 | |
| 107 | static inline void arch_send_call_function_ipi(cpumask_t mask) |
| 108 | { |
| 109 | smp_ops.send_call_func_ipi(mask); |
Glauber Costa | 64b1a21e0 | 2008-03-03 14:12:35 -0300 | [diff] [blame] | 110 | } |
Glauber Costa | 71d1954 | 2008-03-03 14:12:36 -0300 | [diff] [blame] | 111 | |
Glauber Costa | 1e3fac8 | 2008-03-03 14:12:37 -0300 | [diff] [blame] | 112 | void native_smp_prepare_boot_cpu(void); |
Glauber Costa | 7557da6 | 2008-03-03 14:12:38 -0300 | [diff] [blame] | 113 | void native_smp_prepare_cpus(unsigned int max_cpus); |
Glauber Costa | c559764 | 2008-03-03 14:12:39 -0300 | [diff] [blame] | 114 | void native_smp_cpus_done(unsigned int max_cpus); |
Glauber Costa | 71d1954 | 2008-03-03 14:12:36 -0300 | [diff] [blame] | 115 | int native_cpu_up(unsigned int cpunum); |
Jens Axboe | 3b16cf8 | 2008-06-26 11:21:54 +0200 | [diff] [blame] | 116 | void native_send_call_func_ipi(cpumask_t mask); |
| 117 | void native_send_call_func_single_ipi(int cpu); |
Glauber Costa | 93b016f | 2008-03-03 14:12:40 -0300 | [diff] [blame] | 118 | |
Glauber Costa | 69c18c1 | 2008-03-03 14:13:07 -0300 | [diff] [blame] | 119 | extern int __cpu_disable(void); |
| 120 | extern void __cpu_die(unsigned int cpu); |
| 121 | |
Glauber de Oliveira Costa | 1d89a7f | 2008-03-19 14:25:05 -0300 | [diff] [blame] | 122 | void smp_store_cpu_info(int id); |
Glauber de Oliveira Costa | c70dcb7 | 2008-03-19 14:25:58 -0300 | [diff] [blame] | 123 | #define cpu_physical_id(cpu) per_cpu(x86_cpu_to_apicid, cpu) |
Glauber Costa | a9c057c | 2008-03-27 14:06:02 -0300 | [diff] [blame] | 124 | |
| 125 | /* We don't mark CPUs online until __cpu_up(), so we need another measure */ |
| 126 | static inline int num_booting_cpus(void) |
| 127 | { |
| 128 | return cpus_weight(cpu_callout_map); |
| 129 | } |
Ingo Molnar | 4a70173 | 2008-07-03 15:57:47 +0200 | [diff] [blame] | 130 | #endif /* CONFIG_SMP */ |
| 131 | |
| 132 | #if defined(CONFIG_SMP) && defined(CONFIG_HOTPLUG_CPU) |
| 133 | extern void prefill_possible_map(void); |
Yinghai Lu | 329513a | 2008-07-02 18:54:40 -0700 | [diff] [blame] | 134 | #else |
| 135 | static inline void prefill_possible_map(void) |
| 136 | { |
| 137 | } |
Ingo Molnar | 4a70173 | 2008-07-03 15:57:47 +0200 | [diff] [blame] | 138 | #endif |
Glauber Costa | a9c057c | 2008-03-27 14:06:02 -0300 | [diff] [blame] | 139 | |
Alexey Starikovskiy | 2fe6014 | 2008-04-04 23:41:44 +0400 | [diff] [blame] | 140 | extern unsigned disabled_cpus __cpuinitdata; |
| 141 | |
Glauber Costa | a9c057c | 2008-03-27 14:06:02 -0300 | [diff] [blame] | 142 | #ifdef CONFIG_X86_32_SMP |
| 143 | /* |
| 144 | * This function is needed by all SMP systems. It must _always_ be valid |
| 145 | * from the initial startup. We map APIC_BASE very early in page_setup(), |
| 146 | * so this is correct in the x86 case. |
| 147 | */ |
Glauber Costa | a9c057c | 2008-03-27 14:06:02 -0300 | [diff] [blame] | 148 | #define raw_smp_processor_id() (x86_read_percpu(cpu_number)) |
| 149 | extern int safe_smp_processor_id(void); |
| 150 | |
| 151 | #elif defined(CONFIG_X86_64_SMP) |
| 152 | #define raw_smp_processor_id() read_pda(cpunumber) |
| 153 | |
| 154 | #define stack_smp_processor_id() \ |
| 155 | ({ \ |
| 156 | struct thread_info *ti; \ |
| 157 | __asm__("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK)); \ |
| 158 | ti->cpu; \ |
| 159 | }) |
| 160 | #define safe_smp_processor_id() smp_processor_id() |
| 161 | |
| 162 | #else /* !CONFIG_X86_32_SMP && !CONFIG_X86_64_SMP */ |
Glauber de Oliveira Costa | c70dcb7 | 2008-03-19 14:25:58 -0300 | [diff] [blame] | 163 | #define cpu_physical_id(cpu) boot_cpu_physical_apicid |
Glauber Costa | a9c057c | 2008-03-27 14:06:02 -0300 | [diff] [blame] | 164 | #define safe_smp_processor_id() 0 |
| 165 | #define stack_smp_processor_id() 0 |
Glauber Costa | c76cb36 | 2008-03-03 14:12:33 -0300 | [diff] [blame] | 166 | #endif |
Glauber Costa | 1669402 | 2008-03-03 14:12:32 -0300 | [diff] [blame] | 167 | |
Glauber Costa | 1b00084 | 2008-03-27 14:05:58 -0300 | [diff] [blame] | 168 | #ifdef CONFIG_X86_LOCAL_APIC |
| 169 | |
| 170 | static inline int logical_smp_processor_id(void) |
| 171 | { |
| 172 | /* we don't want to mark this access volatile - bad code generation */ |
| 173 | return GET_APIC_LOGICAL_ID(*(u32 *)(APIC_BASE + APIC_LDR)); |
| 174 | } |
| 175 | |
Ingo Molnar | a24eae8 | 2008-03-30 12:17:12 +0200 | [diff] [blame] | 176 | #ifndef CONFIG_X86_64 |
Jack Steiner | 05f2d12 | 2008-03-28 14:12:02 -0500 | [diff] [blame] | 177 | static inline unsigned int read_apic_id(void) |
| 178 | { |
| 179 | return *(u32 *)(APIC_BASE + APIC_ID); |
| 180 | } |
Jack Steiner | ac23d4e | 2008-03-28 14:12:16 -0500 | [diff] [blame] | 181 | #else |
| 182 | extern unsigned int read_apic_id(void); |
| 183 | #endif |
| 184 | |
Jack Steiner | 05f2d12 | 2008-03-28 14:12:02 -0500 | [diff] [blame] | 185 | |
Glauber Costa | 1b00084 | 2008-03-27 14:05:58 -0300 | [diff] [blame] | 186 | # ifdef APIC_DEFINITION |
| 187 | extern int hard_smp_processor_id(void); |
| 188 | # else |
| 189 | # include <mach_apicdef.h> |
| 190 | static inline int hard_smp_processor_id(void) |
| 191 | { |
| 192 | /* we don't want to mark this access volatile - bad code generation */ |
Jack Steiner | 05f2d12 | 2008-03-28 14:12:02 -0500 | [diff] [blame] | 193 | return GET_APIC_ID(read_apic_id()); |
Glauber Costa | 1b00084 | 2008-03-27 14:05:58 -0300 | [diff] [blame] | 194 | } |
| 195 | # endif /* APIC_DEFINITION */ |
| 196 | |
| 197 | #else /* CONFIG_X86_LOCAL_APIC */ |
| 198 | |
| 199 | # ifndef CONFIG_SMP |
| 200 | # define hard_smp_processor_id() 0 |
| 201 | # endif |
| 202 | |
| 203 | #endif /* CONFIG_X86_LOCAL_APIC */ |
| 204 | |
Glauber Costa | 1dbb472 | 2008-03-03 14:13:01 -0300 | [diff] [blame] | 205 | #ifdef CONFIG_HOTPLUG_CPU |
Glauber Costa | 1dbb472 | 2008-03-03 14:13:01 -0300 | [diff] [blame] | 206 | extern void cpu_uninit(void); |
Glauber Costa | 1dbb472 | 2008-03-03 14:13:01 -0300 | [diff] [blame] | 207 | #endif |
| 208 | |
Glauber Costa | c27cfef | 2008-03-03 14:12:29 -0300 | [diff] [blame] | 209 | #endif /* __ASSEMBLY__ */ |
Vegard Nossum | 77ef50a | 2008-06-18 17:08:48 +0200 | [diff] [blame] | 210 | #endif /* ASM_X86__SMP_H */ |