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 LT |
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 | ||
5ad57078 | 27 | #ifdef CONFIG_PPC64 |
1da177e4 | 28 | #include <asm/paca.h> |
5ad57078 | 29 | #endif |
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); | |
38 | struct pt_regs; | |
39 | extern void smp_message_recv(int, struct pt_regs *); | |
40 | ||
41 | #ifdef CONFIG_HOTPLUG_CPU | |
42 | extern void fixup_irqs(cpumask_t map); | |
43 | int generic_cpu_disable(void); | |
44 | int generic_cpu_enable(unsigned int cpu); | |
45 | void generic_cpu_die(unsigned int cpu); | |
46 | void generic_mach_cpu_die(void); | |
47 | #endif | |
48 | ||
5ad57078 | 49 | #ifdef CONFIG_PPC64 |
39c715b7 | 50 | #define raw_smp_processor_id() (get_paca()->paca_index) |
1da177e4 | 51 | #define hard_smp_processor_id() (get_paca()->hw_cpu_id) |
5ad57078 PM |
52 | #else |
53 | /* 32-bit */ | |
54 | extern int smp_hw_index[]; | |
55 | ||
56 | #define raw_smp_processor_id() (current_thread_info()->cpu) | |
57 | #define hard_smp_processor_id() (smp_hw_index[smp_processor_id()]) | |
58 | #define get_hard_smp_processor_id(cpu) (smp_hw_index[(cpu)]) | |
59 | #define set_hard_smp_processor_id(cpu, phys)\ | |
60 | (smp_hw_index[(cpu)] = (phys)) | |
61 | #endif | |
1da177e4 LT |
62 | |
63 | extern cpumask_t cpu_sibling_map[NR_CPUS]; | |
64 | ||
65 | /* Since OpenPIC has only 4 IPIs, we use slightly different message numbers. | |
66 | * | |
67 | * Make sure this matches openpic_request_IPIs in open_pic.c, or what shows up | |
68 | * in /proc/interrupts will be wrong!!! --Troy */ | |
69 | #define PPC_MSG_CALL_FUNCTION 0 | |
70 | #define PPC_MSG_RESCHEDULE 1 | |
71 | /* This is unused now */ | |
72 | #if 0 | |
73 | #define PPC_MSG_MIGRATE_TASK 2 | |
74 | #endif | |
75 | #define PPC_MSG_DEBUGGER_BREAK 3 | |
76 | ||
77 | void smp_init_iSeries(void); | |
78 | void smp_init_pSeries(void); | |
19fe0475 | 79 | void smp_init_cell(void); |
5ad57078 | 80 | void smp_setup_cpu_maps(void); |
1da177e4 LT |
81 | |
82 | extern int __cpu_disable(void); | |
83 | extern void __cpu_die(unsigned int cpu); | |
5ad57078 PM |
84 | |
85 | #else | |
86 | /* for UP */ | |
87 | #define smp_setup_cpu_maps() | |
5ad57078 | 88 | |
1da177e4 LT |
89 | #endif /* CONFIG_SMP */ |
90 | ||
5ad57078 | 91 | #ifdef CONFIG_PPC64 |
1da177e4 LT |
92 | #define get_hard_smp_processor_id(CPU) (paca[(CPU)].hw_cpu_id) |
93 | #define set_hard_smp_processor_id(CPU, VAL) \ | |
94 | do { (paca[(CPU)].hw_cpu_id = (VAL)); } while (0) | |
2249ca9d PM |
95 | |
96 | extern void smp_release_cpus(void); | |
97 | ||
5ad57078 PM |
98 | #else |
99 | /* 32-bit */ | |
100 | #ifndef CONFIG_SMP | |
4df20460 | 101 | extern int boot_cpuid_phys; |
5ad57078 PM |
102 | #define get_hard_smp_processor_id(cpu) boot_cpuid_phys |
103 | #define set_hard_smp_processor_id(cpu, phys) | |
104 | #endif | |
105 | #endif | |
1da177e4 LT |
106 | |
107 | extern int smt_enabled_at_boot; | |
108 | ||
109 | extern int smp_mpic_probe(void); | |
110 | extern void smp_mpic_setup_cpu(int cpu); | |
1da177e4 LT |
111 | extern void smp_generic_kick_cpu(int nr); |
112 | ||
113 | extern void smp_generic_give_timebase(void); | |
114 | extern void smp_generic_take_timebase(void); | |
115 | ||
116 | extern struct smp_ops_t *smp_ops; | |
117 | ||
118 | #endif /* __ASSEMBLY__ */ | |
119 | ||
1da177e4 | 120 | #endif /* __KERNEL__ */ |
5ad57078 | 121 | #endif /* _ASM_POWERPC_SMP_H) */ |