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1da177e4 LT |
1 | #ifndef __ASM_SMP_H |
2 | #define __ASM_SMP_H | |
3 | ||
4 | #include <linux/config.h> | |
5 | ||
6 | #if defined(CONFIG_SMP) | |
7 | ||
8 | /* Page Zero Location PDC will look for the address to branch to when we poke | |
9 | ** slave CPUs still in "Icache loop". | |
10 | */ | |
11 | #define PDC_OS_BOOT_RENDEZVOUS 0x10 | |
12 | #define PDC_OS_BOOT_RENDEZVOUS_HI 0x28 | |
13 | ||
14 | #ifndef ASSEMBLY | |
15 | #include <linux/bitops.h> | |
16 | #include <linux/threads.h> /* for NR_CPUS */ | |
17 | #include <linux/cpumask.h> | |
18 | typedef unsigned long address_t; | |
19 | ||
20 | extern cpumask_t cpu_online_map; | |
21 | ||
22 | ||
23 | /* | |
24 | * Private routines/data | |
25 | * | |
26 | * physical and logical are equivalent until we support CPU hotplug. | |
27 | */ | |
28 | #define cpu_number_map(cpu) (cpu) | |
29 | #define cpu_logical_map(cpu) (cpu) | |
30 | ||
31 | extern void smp_send_reschedule(int cpu); | |
32 | ||
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 | ||
44 | #undef ENTRY_SYS_CPUS | |
45 | #ifdef ENTRY_SYS_CPUS | |
46 | #define STATE_RENDEZVOUS 0 | |
47 | #define STATE_STOPPED 1 | |
48 | #define STATE_RUNNING 2 | |
49 | #define STATE_HALTED 3 | |
50 | #endif | |
51 | ||
52 | extern unsigned long cpu_present_mask; | |
53 | ||
39c715b7 | 54 | #define raw_smp_processor_id() (current_thread_info()->cpu) |
1da177e4 LT |
55 | |
56 | #endif /* CONFIG_SMP */ | |
57 | ||
58 | #define NO_PROC_ID 0xFF /* No processor magic marker */ | |
59 | #define ANY_PROC_ID 0xFF /* Any processor magic marker */ | |
60 | static inline int __cpu_disable (void) { | |
61 | return 0; | |
62 | } | |
63 | static inline void __cpu_die (unsigned int cpu) { | |
64 | while(1) | |
65 | ; | |
66 | } | |
67 | extern int __cpu_up (unsigned int cpu); | |
68 | ||
69 | #endif /* __ASM_SMP_H */ |