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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef __ASM_SMP_H
2#define __ASM_SMP_H
3
Linus Torvalds1da177e2005-04-16 15:20:36 -07004
5#if defined(CONFIG_SMP)
6
7/* Page Zero Location PDC will look for the address to branch to when we poke
8** slave CPUs still in "Icache loop".
9*/
10#define PDC_OS_BOOT_RENDEZVOUS 0x10
11#define PDC_OS_BOOT_RENDEZVOUS_HI 0x28
12
13#ifndef ASSEMBLY
14#include <linux/bitops.h>
15#include <linux/threads.h> /* for NR_CPUS */
16#include <linux/cpumask.h>
17typedef unsigned long address_t;
18
19extern cpumask_t cpu_online_map;
20
21
22/*
23 * Private routines/data
24 *
25 * physical and logical are equivalent until we support CPU hotplug.
26 */
27#define cpu_number_map(cpu) (cpu)
28#define cpu_logical_map(cpu) (cpu)
29
30extern void smp_send_reschedule(int cpu);
James Bottomleyd911aed2005-11-17 16:27:02 -050031extern void smp_send_all_nop(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -070032
33#endif /* !ASSEMBLY */
34
35/*
36 * This magic constant controls our willingness to transfer
37 * a process across CPUs. Such a transfer incurs cache and tlb
38 * misses. The current value is inherited from i386. Still needs
39 * to be tuned for parisc.
40 */
41
42#define PROC_CHANGE_PENALTY 15 /* Schedule penalty */
43
Linus Torvalds1da177e2005-04-16 15:20:36 -070044extern unsigned long cpu_present_mask;
45
Ingo Molnar39c715b2005-06-21 17:14:34 -070046#define raw_smp_processor_id() (current_thread_info()->cpu)
Linus Torvalds1da177e2005-04-16 15:20:36 -070047
Kyle McMartin1d4c4522005-11-17 16:27:44 -050048#else /* CONFIG_SMP */
49
50static inline void smp_send_all_nop(void) { return; }
51
52#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070053
54#define NO_PROC_ID 0xFF /* No processor magic marker */
55#define ANY_PROC_ID 0xFF /* Any processor magic marker */
56static inline int __cpu_disable (void) {
57 return 0;
58}
59static inline void __cpu_die (unsigned int cpu) {
60 while(1)
61 ;
62}
63extern int __cpu_up (unsigned int cpu);
64
65#endif /* __ASM_SMP_H */