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> |
Jeremy Fitzhardinge | b2938f8 | 2006-12-07 02:14:03 +0100 | [diff] [blame] | 11 | #include <asm/pda.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | #endif |
| 13 | |
| 14 | #ifdef CONFIG_X86_LOCAL_APIC |
| 15 | #ifndef __ASSEMBLY__ |
| 16 | #include <asm/fixmap.h> |
| 17 | #include <asm/bitops.h> |
| 18 | #include <asm/mpspec.h> |
| 19 | #ifdef CONFIG_X86_IO_APIC |
| 20 | #include <asm/io_apic.h> |
| 21 | #endif |
| 22 | #include <asm/apic.h> |
| 23 | #endif |
| 24 | #endif |
| 25 | |
| 26 | #define BAD_APICID 0xFFu |
| 27 | #ifdef CONFIG_SMP |
| 28 | #ifndef __ASSEMBLY__ |
| 29 | |
| 30 | /* |
| 31 | * Private routines/data |
| 32 | */ |
| 33 | |
| 34 | extern void smp_alloc_memory(void); |
| 35 | extern int pic_mode; |
| 36 | extern int smp_num_siblings; |
| 37 | extern cpumask_t cpu_sibling_map[]; |
Andi Kleen | 3dd9d51 | 2005-04-16 15:25:15 -0700 | [diff] [blame] | 38 | extern cpumask_t cpu_core_map[]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | extern void (*mtrr_hook) (void); |
| 41 | extern void zap_low_mappings (void); |
Li Shaohua | 6fe940d | 2005-06-25 14:54:53 -0700 | [diff] [blame] | 42 | extern void lock_ipi_call_lock(void); |
| 43 | extern void unlock_ipi_call_lock(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | |
| 45 | #define MAX_APICID 256 |
| 46 | extern u8 x86_cpu_to_apicid[]; |
| 47 | |
Ashok Raj | b4033c1 | 2005-11-08 21:42:33 -0800 | [diff] [blame] | 48 | #define cpu_physical_id(cpu) x86_cpu_to_apicid[cpu] |
| 49 | |
Li Shaohua | e1367da | 2005-06-25 14:54:56 -0700 | [diff] [blame] | 50 | #ifdef CONFIG_HOTPLUG_CPU |
| 51 | extern void cpu_exit_clear(void); |
| 52 | extern void cpu_uninit(void); |
Li Shaohua | e1367da | 2005-06-25 14:54:56 -0700 | [diff] [blame] | 53 | #endif |
| 54 | |
Zachary Amsden | ae5da27 | 2007-02-13 13:26:21 +0100 | [diff] [blame] | 55 | #ifndef CONFIG_PARAVIRT |
| 56 | #define startup_ipi_hook(phys_apicid, start_eip, start_esp) \ |
| 57 | do { } while (0) |
| 58 | #endif |
| 59 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | /* |
| 61 | * This function is needed by all SMP systems. It must _always_ be valid |
| 62 | * from the initial startup. We map APIC_BASE very early in page_setup(), |
| 63 | * so this is correct in the x86 case. |
| 64 | */ |
Jeremy Fitzhardinge | b2938f8 | 2006-12-07 02:14:03 +0100 | [diff] [blame] | 65 | #define raw_smp_processor_id() (read_pda(cpu_number)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | |
| 67 | extern cpumask_t cpu_callout_map; |
| 68 | extern cpumask_t cpu_callin_map; |
Zwane Mwaikambo | 4ad8d38 | 2005-09-03 15:56:51 -0700 | [diff] [blame] | 69 | extern cpumask_t cpu_possible_map; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | |
| 71 | /* We don't mark CPUs online until __cpu_up(), so we need another measure */ |
| 72 | static inline int num_booting_cpus(void) |
| 73 | { |
| 74 | return cpus_weight(cpu_callout_map); |
| 75 | } |
| 76 | |
| 77 | #ifdef CONFIG_X86_LOCAL_APIC |
| 78 | |
| 79 | #ifdef APIC_DEFINITION |
| 80 | extern int hard_smp_processor_id(void); |
| 81 | #else |
| 82 | #include <mach_apicdef.h> |
| 83 | static inline int hard_smp_processor_id(void) |
| 84 | { |
| 85 | /* we don't want to mark this access volatile - bad code generation */ |
| 86 | return GET_APIC_ID(*(unsigned long *)(APIC_BASE+APIC_ID)); |
| 87 | } |
| 88 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | #endif |
Zwane Mwaikambo | f370513 | 2005-06-25 14:54:50 -0700 | [diff] [blame] | 90 | |
Fernando Vazquez | dc2bc76 | 2006-09-30 23:29:07 -0700 | [diff] [blame] | 91 | extern int safe_smp_processor_id(void); |
Zwane Mwaikambo | f370513 | 2005-06-25 14:54:50 -0700 | [diff] [blame] | 92 | extern int __cpu_disable(void); |
| 93 | extern void __cpu_die(unsigned int cpu); |
Ashok Raj | 73fea17 | 2006-09-26 10:52:35 +0200 | [diff] [blame] | 94 | extern unsigned int num_processors; |
Andi Kleen | 874c4fe | 2006-09-26 10:52:26 +0200 | [diff] [blame] | 95 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | #endif /* !__ASSEMBLY__ */ |
| 97 | |
Ashok Raj | b4033c1 | 2005-11-08 21:42:33 -0800 | [diff] [blame] | 98 | #else /* CONFIG_SMP */ |
| 99 | |
Fernando Vazquez | dc2bc76 | 2006-09-30 23:29:07 -0700 | [diff] [blame] | 100 | #define safe_smp_processor_id() 0 |
Ashok Raj | b4033c1 | 2005-11-08 21:42:33 -0800 | [diff] [blame] | 101 | #define cpu_physical_id(cpu) boot_cpu_physical_apicid |
| 102 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | #define NO_PROC_ID 0xFF /* No processor magic marker */ |
| 104 | |
| 105 | #endif |
Andi Kleen | 874c4fe | 2006-09-26 10:52:26 +0200 | [diff] [blame] | 106 | |
| 107 | #ifndef __ASSEMBLY__ |
Jiri Kosina | 815a965 | 2006-10-06 11:11:56 +0200 | [diff] [blame] | 108 | |
| 109 | extern u8 apicid_2_node[]; |
| 110 | |
Andi Kleen | 874c4fe | 2006-09-26 10:52:26 +0200 | [diff] [blame] | 111 | #ifdef CONFIG_X86_LOCAL_APIC |
| 112 | static __inline int logical_smp_processor_id(void) |
| 113 | { |
| 114 | /* we don't want to mark this access volatile - bad code generation */ |
| 115 | return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE+APIC_LDR)); |
| 116 | } |
| 117 | #endif |
| 118 | #endif |
| 119 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | #endif |