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 | |
| 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[]; |
Andi Kleen | 3dd9d51 | 2005-04-16 15:25:15 -0700 | [diff] [blame] | 37 | extern cpumask_t cpu_core_map[]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | extern void (*mtrr_hook) (void); |
| 40 | extern void zap_low_mappings (void); |
Li Shaohua | 6fe940d | 2005-06-25 14:54:53 -0700 | [diff] [blame] | 41 | extern void lock_ipi_call_lock(void); |
| 42 | extern void unlock_ipi_call_lock(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | |
| 44 | #define MAX_APICID 256 |
| 45 | extern u8 x86_cpu_to_apicid[]; |
| 46 | |
Ashok Raj | b4033c1 | 2005-11-08 21:42:33 -0800 | [diff] [blame] | 47 | #define cpu_physical_id(cpu) x86_cpu_to_apicid[cpu] |
| 48 | |
Li Shaohua | e1367da | 2005-06-25 14:54:56 -0700 | [diff] [blame] | 49 | #ifdef CONFIG_HOTPLUG_CPU |
| 50 | extern void cpu_exit_clear(void); |
| 51 | extern void cpu_uninit(void); |
Li Shaohua | e1367da | 2005-06-25 14:54:56 -0700 | [diff] [blame] | 52 | #endif |
| 53 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | */ |
Ingo Molnar | 39c715b | 2005-06-21 17:14:34 -0700 | [diff] [blame] | 59 | #define raw_smp_processor_id() (current_thread_info()->cpu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | |
| 61 | extern cpumask_t cpu_callout_map; |
| 62 | extern cpumask_t cpu_callin_map; |
Zwane Mwaikambo | 4ad8d38 | 2005-09-03 15:56:51 -0700 | [diff] [blame] | 63 | extern cpumask_t cpu_possible_map; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | #endif |
Zwane Mwaikambo | f370513 | 2005-06-25 14:54:50 -0700 | [diff] [blame] | 84 | |
Fernando Vazquez | dc2bc76 | 2006-09-30 23:29:07 -0700 | [diff] [blame] | 85 | extern int safe_smp_processor_id(void); |
Zwane Mwaikambo | f370513 | 2005-06-25 14:54:50 -0700 | [diff] [blame] | 86 | extern int __cpu_disable(void); |
| 87 | extern void __cpu_die(unsigned int cpu); |
Ashok Raj | 73fea17 | 2006-09-26 10:52:35 +0200 | [diff] [blame] | 88 | extern unsigned int num_processors; |
Andi Kleen | 874c4fe | 2006-09-26 10:52:26 +0200 | [diff] [blame] | 89 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | #endif /* !__ASSEMBLY__ */ |
| 91 | |
Ashok Raj | b4033c1 | 2005-11-08 21:42:33 -0800 | [diff] [blame] | 92 | #else /* CONFIG_SMP */ |
| 93 | |
Fernando Vazquez | dc2bc76 | 2006-09-30 23:29:07 -0700 | [diff] [blame] | 94 | #define safe_smp_processor_id() 0 |
Ashok Raj | b4033c1 | 2005-11-08 21:42:33 -0800 | [diff] [blame] | 95 | #define cpu_physical_id(cpu) boot_cpu_physical_apicid |
| 96 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | #define NO_PROC_ID 0xFF /* No processor magic marker */ |
| 98 | |
| 99 | #endif |
Andi Kleen | 874c4fe | 2006-09-26 10:52:26 +0200 | [diff] [blame] | 100 | |
| 101 | #ifndef __ASSEMBLY__ |
Jiri Kosina | 815a965 | 2006-10-06 11:11:56 +0200 | [diff] [blame^] | 102 | |
| 103 | extern u8 apicid_2_node[]; |
| 104 | |
Andi Kleen | 874c4fe | 2006-09-26 10:52:26 +0200 | [diff] [blame] | 105 | #ifdef CONFIG_X86_LOCAL_APIC |
| 106 | static __inline int logical_smp_processor_id(void) |
| 107 | { |
| 108 | /* we don't want to mark this access volatile - bad code generation */ |
| 109 | return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE+APIC_LDR)); |
| 110 | } |
| 111 | #endif |
| 112 | #endif |
| 113 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | #endif |