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 |
1da177e4 LT |
29 | |
30 | extern int boot_cpuid; | |
1da177e4 LT |
31 | |
32 | extern void cpu_die(void); | |
33 | ||
34 | #ifdef CONFIG_SMP | |
35 | ||
36 | extern void smp_send_debugger_break(int cpu); | |
7d12e780 | 37 | extern void smp_message_recv(int); |
1da177e4 LT |
38 | |
39 | #ifdef CONFIG_HOTPLUG_CPU | |
40 | extern void fixup_irqs(cpumask_t map); | |
41 | int generic_cpu_disable(void); | |
42 | int generic_cpu_enable(unsigned int cpu); | |
43 | void generic_cpu_die(unsigned int cpu); | |
44 | void generic_mach_cpu_die(void); | |
45 | #endif | |
46 | ||
5ad57078 | 47 | #ifdef CONFIG_PPC64 |
39c715b7 | 48 | #define raw_smp_processor_id() (get_paca()->paca_index) |
1da177e4 | 49 | #define hard_smp_processor_id() (get_paca()->hw_cpu_id) |
5ad57078 PM |
50 | #else |
51 | /* 32-bit */ | |
52 | extern int smp_hw_index[]; | |
53 | ||
54 | #define raw_smp_processor_id() (current_thread_info()->cpu) | |
55 | #define hard_smp_processor_id() (smp_hw_index[smp_processor_id()]) | |
56 | #define get_hard_smp_processor_id(cpu) (smp_hw_index[(cpu)]) | |
57 | #define set_hard_smp_processor_id(cpu, phys)\ | |
58 | (smp_hw_index[(cpu)] = (phys)) | |
59 | #endif | |
1da177e4 LT |
60 | |
61 | extern cpumask_t cpu_sibling_map[NR_CPUS]; | |
62 | ||
63 | /* Since OpenPIC has only 4 IPIs, we use slightly different message numbers. | |
64 | * | |
65 | * Make sure this matches openpic_request_IPIs in open_pic.c, or what shows up | |
66 | * in /proc/interrupts will be wrong!!! --Troy */ | |
67 | #define PPC_MSG_CALL_FUNCTION 0 | |
68 | #define PPC_MSG_RESCHEDULE 1 | |
69 | /* This is unused now */ | |
70 | #if 0 | |
71 | #define PPC_MSG_MIGRATE_TASK 2 | |
72 | #endif | |
73 | #define PPC_MSG_DEBUGGER_BREAK 3 | |
74 | ||
75 | void smp_init_iSeries(void); | |
76 | void smp_init_pSeries(void); | |
19fe0475 | 77 | void smp_init_cell(void); |
5ad57078 | 78 | void smp_setup_cpu_maps(void); |
1da177e4 LT |
79 | |
80 | extern int __cpu_disable(void); | |
81 | extern void __cpu_die(unsigned int cpu); | |
5ad57078 PM |
82 | |
83 | #else | |
84 | /* for UP */ | |
85 | #define smp_setup_cpu_maps() | |
5ad57078 | 86 | |
1da177e4 LT |
87 | #endif /* CONFIG_SMP */ |
88 | ||
5ad57078 | 89 | #ifdef CONFIG_PPC64 |
1da177e4 LT |
90 | #define get_hard_smp_processor_id(CPU) (paca[(CPU)].hw_cpu_id) |
91 | #define set_hard_smp_processor_id(CPU, VAL) \ | |
92 | do { (paca[(CPU)].hw_cpu_id = (VAL)); } while (0) | |
2249ca9d PM |
93 | |
94 | extern void smp_release_cpus(void); | |
95 | ||
5ad57078 PM |
96 | #else |
97 | /* 32-bit */ | |
98 | #ifndef CONFIG_SMP | |
4df20460 | 99 | extern int boot_cpuid_phys; |
5ad57078 PM |
100 | #define get_hard_smp_processor_id(cpu) boot_cpuid_phys |
101 | #define set_hard_smp_processor_id(cpu, phys) | |
102 | #endif | |
103 | #endif | |
1da177e4 LT |
104 | |
105 | extern int smt_enabled_at_boot; | |
106 | ||
107 | extern int smp_mpic_probe(void); | |
108 | extern void smp_mpic_setup_cpu(int cpu); | |
1da177e4 LT |
109 | extern void smp_generic_kick_cpu(int nr); |
110 | ||
111 | extern void smp_generic_give_timebase(void); | |
112 | extern void smp_generic_take_timebase(void); | |
113 | ||
114 | extern struct smp_ops_t *smp_ops; | |
115 | ||
116 | #endif /* __ASSEMBLY__ */ | |
117 | ||
1da177e4 | 118 | #endif /* __KERNEL__ */ |
5ad57078 | 119 | #endif /* _ASM_POWERPC_SMP_H) */ |