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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#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
34extern void smp_alloc_memory(void);
35extern int pic_mode;
36extern int smp_num_siblings;
37extern cpumask_t cpu_sibling_map[];
Andi Kleen3dd9d512005-04-16 15:25:15 -070038extern cpumask_t cpu_core_map[];
Linus Torvalds1da177e2005-04-16 15:20:36 -070039
40extern void smp_flush_tlb(void);
41extern void smp_message_irq(int cpl, void *dev_id, struct pt_regs *regs);
42extern void smp_invalidate_rcv(void); /* Process an NMI */
43extern void (*mtrr_hook) (void);
44extern void zap_low_mappings (void);
45
46#define MAX_APICID 256
47extern u8 x86_cpu_to_apicid[];
48
49/*
50 * This function is needed by all SMP systems. It must _always_ be valid
51 * from the initial startup. We map APIC_BASE very early in page_setup(),
52 * so this is correct in the x86 case.
53 */
Ingo Molnar39c715b2005-06-21 17:14:34 -070054#define raw_smp_processor_id() (current_thread_info()->cpu)
Linus Torvalds1da177e2005-04-16 15:20:36 -070055
56extern cpumask_t cpu_callout_map;
57extern cpumask_t cpu_callin_map;
58#define cpu_possible_map cpu_callout_map
59
60/* We don't mark CPUs online until __cpu_up(), so we need another measure */
61static inline int num_booting_cpus(void)
62{
63 return cpus_weight(cpu_callout_map);
64}
65
66#ifdef CONFIG_X86_LOCAL_APIC
67
68#ifdef APIC_DEFINITION
69extern int hard_smp_processor_id(void);
70#else
71#include <mach_apicdef.h>
72static inline int hard_smp_processor_id(void)
73{
74 /* we don't want to mark this access volatile - bad code generation */
75 return GET_APIC_ID(*(unsigned long *)(APIC_BASE+APIC_ID));
76}
77#endif
78
79static __inline int logical_smp_processor_id(void)
80{
81 /* we don't want to mark this access volatile - bad code generation */
82 return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE+APIC_LDR));
83}
84
85#endif
Zwane Mwaikambof3705132005-06-25 14:54:50 -070086
87extern int __cpu_disable(void);
88extern void __cpu_die(unsigned int cpu);
Linus Torvalds1da177e2005-04-16 15:20:36 -070089#endif /* !__ASSEMBLY__ */
90
91#define NO_PROC_ID 0xFF /* No processor magic marker */
92
93#endif
94#endif