Commit | Line | Data |
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1da177e4 | 1 | /* |
5ad57078 | 2 | * smp.h: PowerPC-specific SMP code. |
1da177e4 LT |
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 | ||
5ad57078 PM |
16 | #ifndef _ASM_POWERPC_SMP_H |
17 | #define _ASM_POWERPC_SMP_H | |
1da177e4 | 18 | #ifdef __KERNEL__ |
1da177e4 | 19 | |
1da177e4 LT |
20 | #include <linux/threads.h> |
21 | #include <linux/cpumask.h> | |
22 | #include <linux/kernel.h> | |
23 | ||
24 | #ifndef __ASSEMBLY__ | |
25 | ||
5ad57078 | 26 | #ifdef CONFIG_PPC64 |
1da177e4 | 27 | #include <asm/paca.h> |
5ad57078 | 28 | #endif |
d5a7430d | 29 | #include <asm/percpu.h> |
1da177e4 LT |
30 | |
31 | extern int boot_cpuid; | |
1da177e4 LT |
32 | |
33 | extern void cpu_die(void); | |
34 | ||
35 | #ifdef CONFIG_SMP | |
36 | ||
37 | extern void smp_send_debugger_break(int cpu); | |
7d12e780 | 38 | extern void smp_message_recv(int); |
1da177e4 LT |
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 | ||
5ad57078 | 48 | #ifdef CONFIG_PPC64 |
048c8bc9 | 49 | #define raw_smp_processor_id() (local_paca->paca_index) |
1da177e4 | 50 | #define hard_smp_processor_id() (get_paca()->hw_cpu_id) |
5ad57078 PM |
51 | #else |
52 | /* 32-bit */ | |
53 | extern int smp_hw_index[]; | |
54 | ||
55 | #define raw_smp_processor_id() (current_thread_info()->cpu) | |
56 | #define hard_smp_processor_id() (smp_hw_index[smp_processor_id()]) | |
57 | #define get_hard_smp_processor_id(cpu) (smp_hw_index[(cpu)]) | |
58 | #define set_hard_smp_processor_id(cpu, phys)\ | |
59 | (smp_hw_index[(cpu)] = (phys)) | |
60 | #endif | |
1da177e4 | 61 | |
d5a7430d | 62 | DECLARE_PER_CPU(cpumask_t, cpu_sibling_map); |
1da177e4 LT |
63 | |
64 | /* Since OpenPIC has only 4 IPIs, we use slightly different message numbers. | |
65 | * | |
66 | * Make sure this matches openpic_request_IPIs in open_pic.c, or what shows up | |
67 | * in /proc/interrupts will be wrong!!! --Troy */ | |
68 | #define PPC_MSG_CALL_FUNCTION 0 | |
69 | #define PPC_MSG_RESCHEDULE 1 | |
70 | /* This is unused now */ | |
71 | #if 0 | |
72 | #define PPC_MSG_MIGRATE_TASK 2 | |
73 | #endif | |
74 | #define PPC_MSG_DEBUGGER_BREAK 3 | |
75 | ||
76 | void smp_init_iSeries(void); | |
77 | void smp_init_pSeries(void); | |
19fe0475 | 78 | void smp_init_cell(void); |
c347b798 | 79 | void smp_init_celleb(void); |
5ad57078 | 80 | void smp_setup_cpu_maps(void); |
d5a7430d | 81 | void smp_setup_cpu_sibling_map(void); |
1da177e4 LT |
82 | |
83 | extern int __cpu_disable(void); | |
84 | extern void __cpu_die(unsigned int cpu); | |
5ad57078 PM |
85 | |
86 | #else | |
87 | /* for UP */ | |
2f4dfe20 | 88 | #define hard_smp_processor_id() 0 |
5ad57078 | 89 | #define smp_setup_cpu_maps() |
5ad57078 | 90 | |
1da177e4 LT |
91 | #endif /* CONFIG_SMP */ |
92 | ||
5ad57078 | 93 | #ifdef CONFIG_PPC64 |
1da177e4 LT |
94 | #define get_hard_smp_processor_id(CPU) (paca[(CPU)].hw_cpu_id) |
95 | #define set_hard_smp_processor_id(CPU, VAL) \ | |
96 | do { (paca[(CPU)].hw_cpu_id = (VAL)); } while (0) | |
2249ca9d PM |
97 | |
98 | extern void smp_release_cpus(void); | |
99 | ||
5ad57078 PM |
100 | #else |
101 | /* 32-bit */ | |
102 | #ifndef CONFIG_SMP | |
4df20460 | 103 | extern int boot_cpuid_phys; |
5ad57078 PM |
104 | #define get_hard_smp_processor_id(cpu) boot_cpuid_phys |
105 | #define set_hard_smp_processor_id(cpu, phys) | |
106 | #endif | |
107 | #endif | |
1da177e4 LT |
108 | |
109 | extern int smt_enabled_at_boot; | |
110 | ||
111 | extern int smp_mpic_probe(void); | |
112 | extern void smp_mpic_setup_cpu(int cpu); | |
1da177e4 LT |
113 | extern void smp_generic_kick_cpu(int nr); |
114 | ||
115 | extern void smp_generic_give_timebase(void); | |
116 | extern void smp_generic_take_timebase(void); | |
117 | ||
118 | extern struct smp_ops_t *smp_ops; | |
119 | ||
120 | #endif /* __ASSEMBLY__ */ | |
121 | ||
1da177e4 | 122 | #endif /* __KERNEL__ */ |
5ad57078 | 123 | #endif /* _ASM_POWERPC_SMP_H) */ |