Commit | Line | Data |
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1da177e4 | 1 | /* |
4baa9922 | 2 | * arch/arm/include/asm/smp.h |
1da177e4 LT |
3 | * |
4 | * Copyright (C) 2004-2005 ARM Ltd. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | #ifndef __ASM_ARM_SMP_H | |
11 | #define __ASM_ARM_SMP_H | |
12 | ||
1da177e4 LT |
13 | #include <linux/threads.h> |
14 | #include <linux/cpumask.h> | |
15 | #include <linux/thread_info.h> | |
16 | ||
1da177e4 | 17 | #ifndef CONFIG_SMP |
4baa9922 | 18 | # error "<asm/smp.h> included in non-SMP build" |
1da177e4 LT |
19 | #endif |
20 | ||
39c715b7 | 21 | #define raw_smp_processor_id() (current_thread_info()->cpu) |
1da177e4 | 22 | |
1da177e4 LT |
23 | struct seq_file; |
24 | ||
25 | /* | |
26 | * generate IPI list text | |
27 | */ | |
f13cd417 | 28 | extern void show_ipi_list(struct seq_file *, int); |
1da177e4 | 29 | |
3b6353fa RK |
30 | /* |
31 | * Called from assembly code, this handles an IPI. | |
32 | */ | |
ad3b6993 | 33 | asmlinkage void do_IPI(int ipinr, struct pt_regs *regs); |
3b6353fa | 34 | |
0b5a1b95 SG |
35 | /* |
36 | * Called from C code, this handles an IPI. | |
37 | */ | |
38 | void handle_IPI(int ipinr, struct pt_regs *regs); | |
39 | ||
7bbb7940 | 40 | /* |
e03cdade | 41 | * Setup the set of possible CPUs (via set_cpu_possible) |
7bbb7940 RK |
42 | */ |
43 | extern void smp_init_cpus(void); | |
44 | ||
1da177e4 LT |
45 | |
46 | /* | |
0f7b332f | 47 | * Provide a function to raise an IPI cross call on CPUs in callmap. |
1da177e4 | 48 | */ |
0f7b332f | 49 | extern void set_smp_cross_call(void (*)(const struct cpumask *, unsigned int)); |
dbebb4cb | 50 | |
1da177e4 LT |
51 | /* |
52 | * Boot a secondary CPU, and assign it the specified idle task. | |
53 | * This also gives us the initial stack to use for this CPU. | |
54 | */ | |
55 | extern int boot_secondary(unsigned int cpu, struct task_struct *); | |
56 | ||
3b6353fa RK |
57 | /* |
58 | * Called from platform specific assembly code, this is the | |
59 | * secondary CPU entry point. | |
60 | */ | |
61 | asmlinkage void secondary_start_kernel(void); | |
62 | ||
05c74a6c | 63 | |
e65f38ed RK |
64 | /* |
65 | * Initial data for bringing up a secondary CPU. | |
66 | */ | |
67 | struct secondary_data { | |
68 | unsigned long pgdir; | |
d427958a | 69 | unsigned long swapper_pg_dir; |
e65f38ed RK |
70 | void *stack; |
71 | }; | |
72 | extern struct secondary_data secondary_data; | |
28e8e29c | 73 | extern volatile int pen_release; |
e65f38ed | 74 | |
a054a811 | 75 | extern int __cpu_disable(void); |
a054a811 RK |
76 | |
77 | extern void __cpu_die(unsigned int cpu); | |
78 | extern void cpu_die(void); | |
79 | ||
f6dd9fa5 | 80 | extern void arch_send_call_function_single_ipi(int cpu); |
82668104 | 81 | extern void arch_send_call_function_ipi_mask(const struct cpumask *mask); |
b62655f4 | 82 | extern void arch_send_wakeup_ipi_mask(const struct cpumask *mask); |
f6dd9fa5 | 83 | |
6fa3eb70 S |
84 | extern void smp_send_all_cpu_backtrace(void); |
85 | ||
abcee5fb MZ |
86 | struct smp_operations { |
87 | #ifdef CONFIG_SMP | |
88 | /* | |
89 | * Setup the set of possible CPUs (via set_cpu_possible) | |
90 | */ | |
91 | void (*smp_init_cpus)(void); | |
92 | /* | |
93 | * Initialize cpu_possible map, and enable coherency | |
94 | */ | |
95 | void (*smp_prepare_cpus)(unsigned int max_cpus); | |
96 | ||
97 | /* | |
98 | * Perform platform specific initialisation of the specified CPU. | |
99 | */ | |
100 | void (*smp_secondary_init)(unsigned int cpu); | |
101 | /* | |
102 | * Boot a secondary CPU, and assign it the specified idle task. | |
103 | * This also gives us the initial stack to use for this CPU. | |
104 | */ | |
105 | int (*smp_boot_secondary)(unsigned int cpu, struct task_struct *idle); | |
106 | #ifdef CONFIG_HOTPLUG_CPU | |
107 | int (*cpu_kill)(unsigned int cpu); | |
108 | void (*cpu_die)(unsigned int cpu); | |
109 | int (*cpu_disable)(unsigned int cpu); | |
110 | #endif | |
111 | #endif | |
112 | }; | |
113 | ||
114 | /* | |
115 | * set platform specific SMP operations | |
116 | */ | |
117 | extern void smp_set_ops(struct smp_operations *); | |
118 | ||
1da177e4 | 119 | #endif /* ifndef __ASM_ARM_SMP_H */ |