Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * smp.h: PPC64 specific SMP code. | |
3 | * | |
4 | * Original was a copy of sparc smp.h. Now heavily modified | |
5 | * for PPC. | |
6 | * | |
7 | * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) | |
8 | * Copyright (C) 1996-2001 Cort Dougan <cort@fsmlabs.com> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License | |
12 | * as published by the Free Software Foundation; either version | |
13 | * 2 of the License, or (at your option) any later version. | |
14 | */ | |
15 | ||
16 | #ifdef __KERNEL__ | |
17 | #ifndef _PPC64_SMP_H | |
18 | #define _PPC64_SMP_H | |
19 | ||
20 | #include <linux/config.h> | |
21 | #include <linux/threads.h> | |
22 | #include <linux/cpumask.h> | |
23 | #include <linux/kernel.h> | |
24 | ||
25 | #ifndef __ASSEMBLY__ | |
26 | ||
27 | #include <asm/paca.h> | |
28 | ||
29 | extern int boot_cpuid; | |
30 | extern int boot_cpuid_phys; | |
31 | ||
32 | extern void cpu_die(void); | |
33 | ||
34 | #ifdef CONFIG_SMP | |
35 | ||
36 | extern void smp_send_debugger_break(int cpu); | |
37 | struct pt_regs; | |
38 | extern void smp_message_recv(int, struct pt_regs *); | |
39 | ||
40 | #ifdef CONFIG_HOTPLUG_CPU | |
41 | extern void fixup_irqs(cpumask_t map); | |
42 | int generic_cpu_disable(void); | |
43 | int generic_cpu_enable(unsigned int cpu); | |
44 | void generic_cpu_die(unsigned int cpu); | |
45 | void generic_mach_cpu_die(void); | |
46 | #endif | |
47 | ||
48 | #define __smp_processor_id() (get_paca()->paca_index) | |
49 | #define hard_smp_processor_id() (get_paca()->hw_cpu_id) | |
50 | ||
51 | extern cpumask_t cpu_sibling_map[NR_CPUS]; | |
52 | ||
53 | /* Since OpenPIC has only 4 IPIs, we use slightly different message numbers. | |
54 | * | |
55 | * Make sure this matches openpic_request_IPIs in open_pic.c, or what shows up | |
56 | * in /proc/interrupts will be wrong!!! --Troy */ | |
57 | #define PPC_MSG_CALL_FUNCTION 0 | |
58 | #define PPC_MSG_RESCHEDULE 1 | |
59 | /* This is unused now */ | |
60 | #if 0 | |
61 | #define PPC_MSG_MIGRATE_TASK 2 | |
62 | #endif | |
63 | #define PPC_MSG_DEBUGGER_BREAK 3 | |
64 | ||
65 | void smp_init_iSeries(void); | |
66 | void smp_init_pSeries(void); | |
67 | ||
68 | extern int __cpu_disable(void); | |
69 | extern void __cpu_die(unsigned int cpu); | |
70 | #endif /* CONFIG_SMP */ | |
71 | ||
72 | #define get_hard_smp_processor_id(CPU) (paca[(CPU)].hw_cpu_id) | |
73 | #define set_hard_smp_processor_id(CPU, VAL) \ | |
74 | do { (paca[(CPU)].hw_cpu_id = (VAL)); } while (0) | |
75 | ||
76 | extern int smt_enabled_at_boot; | |
77 | ||
78 | extern int smp_mpic_probe(void); | |
79 | extern void smp_mpic_setup_cpu(int cpu); | |
80 | extern void smp_mpic_message_pass(int target, int msg); | |
81 | extern void smp_generic_kick_cpu(int nr); | |
82 | ||
83 | extern void smp_generic_give_timebase(void); | |
84 | extern void smp_generic_take_timebase(void); | |
85 | ||
86 | extern struct smp_ops_t *smp_ops; | |
87 | ||
88 | #endif /* __ASSEMBLY__ */ | |
89 | ||
90 | #endif /* !(_PPC64_SMP_H) */ | |
91 | #endif /* __KERNEL__ */ |