Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef __ASM_SMP_H |
| 2 | #define __ASM_SMP_H |
| 3 | |
Thomas Gleixner | ae9d983 | 2008-01-30 13:30:36 +0100 | [diff] [blame] | 4 | #ifndef __ASSEMBLY__ |
| 5 | #include <linux/cpumask.h> |
| 6 | #include <linux/init.h> |
| 7 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | /* |
| 9 | * We need the APIC definitions automatically as part of 'smp.h' |
| 10 | */ |
Thomas Gleixner | ae9d983 | 2008-01-30 13:30:36 +0100 | [diff] [blame] | 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 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | #endif |
| 18 | |
Thomas Gleixner | ae9d983 | 2008-01-30 13:30:36 +0100 | [diff] [blame] | 19 | extern cpumask_t cpu_callin_map; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | |
Thomas Gleixner | ae9d983 | 2008-01-30 13:30:36 +0100 | [diff] [blame] | 21 | extern void (*mtrr_hook) (void); |
| 22 | extern void zap_low_mappings (void); |
| 23 | |
Glauber Costa | 5382e89 | 2008-03-03 14:12:57 -0300 | [diff] [blame] | 24 | extern u16 __initdata x86_cpu_to_apicid_init[]; |
travis@sgi.com | 3b41908 | 2008-01-30 13:33:11 +0100 | [diff] [blame] | 25 | extern void *x86_cpu_to_apicid_early_ptr; |
Thomas Gleixner | ae9d983 | 2008-01-30 13:30:36 +0100 | [diff] [blame] | 26 | |
| 27 | DECLARE_PER_CPU(cpumask_t, cpu_sibling_map); |
| 28 | DECLARE_PER_CPU(cpumask_t, cpu_core_map); |
Glauber Costa | 5382e89 | 2008-03-03 14:12:57 -0300 | [diff] [blame] | 29 | DECLARE_PER_CPU(u16, cpu_llc_id); |
| 30 | DECLARE_PER_CPU(u16, x86_cpu_to_apicid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | |
Thomas Gleixner | ae9d983 | 2008-01-30 13:30:36 +0100 | [diff] [blame] | 32 | #ifdef CONFIG_SMP |
Zachary Amsden | ae5da27 | 2007-02-13 13:26:21 +0100 | [diff] [blame] | 33 | #ifndef CONFIG_PARAVIRT |
Thomas Gleixner | ae9d983 | 2008-01-30 13:30:36 +0100 | [diff] [blame] | 34 | #define startup_ipi_hook(phys_apicid, start_eip, start_esp) do { } while (0) |
Zachary Amsden | ae5da27 | 2007-02-13 13:26:21 +0100 | [diff] [blame] | 35 | #endif |
| 36 | |
Thomas Gleixner | ae9d983 | 2008-01-30 13:30:36 +0100 | [diff] [blame] | 37 | extern int __cpu_disable(void); |
| 38 | extern void __cpu_die(unsigned int cpu); |
| 39 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | /* |
| 41 | * This function is needed by all SMP systems. It must _always_ be valid |
| 42 | * from the initial startup. We map APIC_BASE very early in page_setup(), |
| 43 | * so this is correct in the x86 case. |
| 44 | */ |
Jeremy Fitzhardinge | 7c3576d | 2007-05-02 19:27:16 +0200 | [diff] [blame] | 45 | DECLARE_PER_CPU(int, cpu_number); |
| 46 | #define raw_smp_processor_id() (x86_read_percpu(cpu_number)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
Thomas Gleixner | ae9d983 | 2008-01-30 13:30:36 +0100 | [diff] [blame] | 48 | #define cpu_physical_id(cpu) per_cpu(x86_cpu_to_apicid, cpu) |
| 49 | |
| 50 | extern int safe_smp_processor_id(void); |
| 51 | |
| 52 | void __cpuinit smp_store_cpu_info(int id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | |
| 54 | /* We don't mark CPUs online until __cpu_up(), so we need another measure */ |
| 55 | static inline int num_booting_cpus(void) |
| 56 | { |
| 57 | return cpus_weight(cpu_callout_map); |
| 58 | } |
| 59 | |
Fernando Luis Vazquez Cao | a36166c | 2007-05-09 02:33:27 -0700 | [diff] [blame] | 60 | #else /* CONFIG_SMP */ |
| 61 | |
| 62 | #define safe_smp_processor_id() 0 |
| 63 | #define cpu_physical_id(cpu) boot_cpu_physical_apicid |
| 64 | |
Thomas Gleixner | ae9d983 | 2008-01-30 13:30:36 +0100 | [diff] [blame] | 65 | #endif /* !CONFIG_SMP */ |
Fernando Luis Vazquez Cao | a36166c | 2007-05-09 02:33:27 -0700 | [diff] [blame] | 66 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | #ifdef CONFIG_X86_LOCAL_APIC |
| 68 | |
Andi Kleen | 874c4fe | 2006-09-26 10:52:26 +0200 | [diff] [blame] | 69 | static __inline int logical_smp_processor_id(void) |
| 70 | { |
| 71 | /* we don't want to mark this access volatile - bad code generation */ |
Thomas Gleixner | ae9d983 | 2008-01-30 13:30:36 +0100 | [diff] [blame] | 72 | return GET_APIC_LOGICAL_ID(*(u32 *)(APIC_BASE + APIC_LDR)); |
Andi Kleen | 874c4fe | 2006-09-26 10:52:26 +0200 | [diff] [blame] | 73 | } |
Andi Kleen | 874c4fe | 2006-09-26 10:52:26 +0200 | [diff] [blame] | 74 | |
Thomas Gleixner | ae9d983 | 2008-01-30 13:30:36 +0100 | [diff] [blame] | 75 | # ifdef APIC_DEFINITION |
| 76 | extern int hard_smp_processor_id(void); |
| 77 | # else |
| 78 | # include <mach_apicdef.h> |
| 79 | static inline int hard_smp_processor_id(void) |
| 80 | { |
| 81 | /* we don't want to mark this access volatile - bad code generation */ |
| 82 | return GET_APIC_ID(*(u32 *)(APIC_BASE + APIC_ID)); |
| 83 | } |
| 84 | # endif /* APIC_DEFINITION */ |
| 85 | |
| 86 | #else /* CONFIG_X86_LOCAL_APIC */ |
| 87 | |
| 88 | # ifndef CONFIG_SMP |
| 89 | # define hard_smp_processor_id() 0 |
| 90 | # endif |
| 91 | |
| 92 | #endif /* CONFIG_X86_LOCAL_APIC */ |
| 93 | |
| 94 | #endif /* !ASSEMBLY */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | #endif |