projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | |
| 7bbb7940 | 35 | /* |
| e03cdade | 36 | * Setup the set of possible CPUs (via set_cpu_possible) |
| 7bbb7940 RK |
37 | */ |
| 38 | extern void smp_init_cpus(void); | |
| 39 | ||
| 1da177e4 LT |
40 | |
| 41 | /* | |
| 0f7b332f | 42 | * Provide a function to raise an IPI cross call on CPUs in callmap. |
| 1da177e4 | 43 | */ |
| 0f7b332f | 44 | extern void set_smp_cross_call(void (*)(const struct cpumask *, unsigned int)); |
| dbebb4cb | 45 | |
| 1da177e4 LT |
46 | /* |
| 47 | * Boot a secondary CPU, and assign it the specified idle task. | |
| 48 | * This also gives us the initial stack to use for this CPU. | |
| 49 | */ | |
| 50 | extern int boot_secondary(unsigned int cpu, struct task_struct *); | |
| 51 | ||
| 3b6353fa RK |
52 | /* |
| 53 | * Called from platform specific assembly code, this is the | |
| 54 | * secondary CPU entry point. | |
| 55 | */ | |
| 56 | asmlinkage void secondary_start_kernel(void); | |
| 57 | ||
| e65f38ed RK |
58 | /* |
| 59 | * Perform platform specific initialisation of the specified CPU. | |
| 60 | */ | |
| 61 | extern void platform_secondary_init(unsigned int cpu); | |
| 62 | ||
| 05c74a6c RK |
63 | /* |
| 64 | * Initialize cpu_possible map, and enable coherency | |
| 65 | */ | |
| 66 | extern void platform_smp_prepare_cpus(unsigned int); | |
| 67 | ||
| d6257288 WD |
68 | /* |
| 69 | * Logical CPU mapping. | |
| 70 | */ | |
| 71 | extern int __cpu_logical_map[NR_CPUS]; | |
| 72 | #define cpu_logical_map(cpu) __cpu_logical_map[cpu] | |
| 73 | ||
| e65f38ed RK |
74 | /* |
| 75 | * Initial data for bringing up a secondary CPU. | |
| 76 | */ | |
| 77 | struct secondary_data { | |
| 78 | unsigned long pgdir; | |
| d427958a | 79 | unsigned long swapper_pg_dir; |
| e65f38ed RK |
80 | void *stack; |
| 81 | }; | |
| 82 | extern struct secondary_data secondary_data; | |
| 83 | ||
| a054a811 | 84 | extern int __cpu_disable(void); |
| 8e2a43f5 | 85 | extern int platform_cpu_disable(unsigned int cpu); |
| a054a811 RK |
86 | |
| 87 | extern void __cpu_die(unsigned int cpu); | |
| 88 | extern void cpu_die(void); | |
| 89 | ||
| 90 | extern void platform_cpu_die(unsigned int cpu); | |
| 91 | extern int platform_cpu_kill(unsigned int cpu); | |
| 92 | extern void platform_cpu_enable(unsigned int cpu); | |
| 93 | ||
| f6dd9fa5 | 94 | extern void arch_send_call_function_single_ipi(int cpu); |
| 82668104 | 95 | extern void arch_send_call_function_ipi_mask(const struct cpumask *mask); |
| f6dd9fa5 | 96 | |
| 37ee16ae RK |
97 | /* |
| 98 | * show local interrupt info | |
| 99 | */ | |
| f13cd417 | 100 | extern void show_local_irqs(struct seq_file *, int); |
| 37ee16ae | 101 | |
| 1da177e4 | 102 | #endif /* ifndef __ASM_ARM_SMP_H */ |