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__ |
| 8 | #include <linux/config.h> |
| 9 | #include <linux/kernel.h> |
| 10 | #include <linux/threads.h> |
| 11 | #include <linux/cpumask.h> |
| 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 | |
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); |
Li Shaohua | e1367da | 2005-06-25 14:54:56 -0700 | [diff] [blame] | 51 | #endif |
| 52 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | /* |
| 54 | * This function is needed by all SMP systems. It must _always_ be valid |
| 55 | * from the initial startup. We map APIC_BASE very early in page_setup(), |
| 56 | * so this is correct in the x86 case. |
| 57 | */ |
Ingo Molnar | 39c715b | 2005-06-21 17:14:34 -0700 | [diff] [blame] | 58 | #define raw_smp_processor_id() (current_thread_info()->cpu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | |
| 60 | extern cpumask_t cpu_callout_map; |
| 61 | extern cpumask_t cpu_callin_map; |
Zwane Mwaikambo | 4ad8d38 | 2005-09-03 15:56:51 -0700 | [diff] [blame^] | 62 | extern cpumask_t cpu_possible_map; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | |
| 64 | /* We don't mark CPUs online until __cpu_up(), so we need another measure */ |
| 65 | static inline int num_booting_cpus(void) |
| 66 | { |
| 67 | return cpus_weight(cpu_callout_map); |
| 68 | } |
| 69 | |
| 70 | #ifdef CONFIG_X86_LOCAL_APIC |
| 71 | |
| 72 | #ifdef APIC_DEFINITION |
| 73 | extern int hard_smp_processor_id(void); |
| 74 | #else |
| 75 | #include <mach_apicdef.h> |
| 76 | static inline int hard_smp_processor_id(void) |
| 77 | { |
| 78 | /* we don't want to mark this access volatile - bad code generation */ |
| 79 | return GET_APIC_ID(*(unsigned long *)(APIC_BASE+APIC_ID)); |
| 80 | } |
| 81 | #endif |
| 82 | |
| 83 | static __inline int logical_smp_processor_id(void) |
| 84 | { |
| 85 | /* we don't want to mark this access volatile - bad code generation */ |
| 86 | return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE+APIC_LDR)); |
| 87 | } |
| 88 | |
| 89 | #endif |
Zwane Mwaikambo | f370513 | 2005-06-25 14:54:50 -0700 | [diff] [blame] | 90 | |
| 91 | extern int __cpu_disable(void); |
| 92 | extern void __cpu_die(unsigned int cpu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | #endif /* !__ASSEMBLY__ */ |
| 94 | |
| 95 | #define NO_PROC_ID 0xFF /* No processor magic marker */ |
| 96 | |
| 97 | #endif |
| 98 | #endif |