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1#ifndef __ASM_SMP_H
2#define __ASM_SMP_H
3
4
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
19
20/*
21 * Private routines/data
22 *
23 * physical and logical are equivalent until we support CPU hotplug.
24 */
25#define cpu_number_map(cpu) (cpu)
26#define cpu_logical_map(cpu) (cpu)
27
28extern void smp_send_reschedule(int cpu);
29extern void smp_send_all_nop(void);
30
31extern void arch_send_call_function_single_ipi(int cpu);
32extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
33#define arch_send_call_function_ipi_mask arch_send_call_function_ipi_mask
34
35#endif /* !ASSEMBLY */
36
37/*
38 * This magic constant controls our willingness to transfer
39 * a process across CPUs. Such a transfer incurs cache and tlb
40 * misses. The current value is inherited from i386. Still needs
41 * to be tuned for parisc.
42 */
43
44#define PROC_CHANGE_PENALTY 15 /* Schedule penalty */
45
46#define raw_smp_processor_id() (current_thread_info()->cpu)
47
48#else /* CONFIG_SMP */
49
50static inline void smp_send_all_nop(void) { return; }
51
52#endif
53
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 */