projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * This file is subject to the terms and conditions of the GNU General | |
| 3 | * Public License. See the file "COPYING" in the main directory of this | |
| 4 | * archive for more details. | |
| 5 | * | |
| 6 | * Copyright (C) 2000 - 2001 by Kanoj Sarcar (kanoj@sgi.com) | |
| 7 | * Copyright (C) 2000 - 2001 by Silicon Graphics, Inc. | |
| 8 | * Copyright (C) 2000, 2001, 2002 Ralf Baechle | |
| 9 | * Copyright (C) 2000, 2001 Broadcom Corporation | |
| 10 | */ | |
| 11 | #ifndef __ASM_SMP_H | |
| 12 | #define __ASM_SMP_H | |
| 13 | ||
| 1da177e4 LT |
14 | #include <linux/bitops.h> |
| 15 | #include <linux/linkage.h> | |
| 631330f5 | 16 | #include <linux/smp.h> |
| 1da177e4 LT |
17 | #include <linux/threads.h> |
| 18 | #include <linux/cpumask.h> | |
| 87353d8a | 19 | |
| 60063497 | 20 | #include <linux/atomic.h> |
| 87353d8a | 21 | #include <asm/smp-ops.h> |
| 1da177e4 | 22 | |
| 0ab7aefc RB |
23 | extern int smp_num_siblings; |
| 24 | extern cpumask_t cpu_sibling_map[]; | |
| bda4584c | 25 | extern cpumask_t cpu_core_map[]; |
| 0ab7aefc | 26 | |
| 39c715b7 | 27 | #define raw_smp_processor_id() (current_thread_info()->cpu) |
| 1da177e4 LT |
28 | |
| 29 | /* Map from cpu id to sequential logical cpu number. This will only | |
| 70342287 | 30 | not be idempotent when cpus failed to come on-line. */ |
| 1da177e4 LT |
31 | extern int __cpu_number_map[NR_CPUS]; |
| 32 | #define cpu_number_map(cpu) __cpu_number_map[cpu] | |
| 33 | ||
| 34 | /* The reverse map from sequential logical cpu number to cpu id. */ | |
| 35 | extern int __cpu_logical_map[NR_CPUS]; | |
| 36 | #define cpu_logical_map(cpu) __cpu_logical_map[cpu] | |
| 37 | ||
| 38 | #define NO_PROC_ID (-1) | |
| 39 | ||
| 70342287 | 40 | #define SMP_RESCHEDULE_YOURSELF 0x1 /* XXX braindead */ |
| 1da177e4 | 41 | #define SMP_CALL_FUNCTION 0x2 |
| ddcdb1b4 DD |
42 | /* Octeon - Tell another core to flush its icache */ |
| 43 | #define SMP_ICACHE_FLUSH 0x4 | |
| 7aa1c8f4 RB |
44 | /* Used by kexec crashdump to save all cpu's state */ |
| 45 | #define SMP_DUMP 0x8 | |
| c4a987db | 46 | #define SMP_ASK_C0COUNT 0x10 |
| ddcdb1b4 | 47 | |
| 773cb77d | 48 | extern volatile cpumask_t cpu_callin_map; |
| 1da177e4 | 49 | |
| 76306f42 PB |
50 | /* Mask of CPUs which are currently definitely operating coherently */ |
| 51 | extern cpumask_t cpu_coherent_mask; | |
| 52 | ||
| 1da177e4 LT |
53 | extern void asmlinkage smp_bootstrap(void); |
| 54 | ||
| 55 | /* | |
| 56 | * this function sends a 'reschedule' IPI to another CPU. | |
| 57 | * it goes straight through and wastes no time serializing | |
| 58 | * anything. Worst case is that we lose a reschedule ... | |
| 59 | */ | |
| 60 | static inline void smp_send_reschedule(int cpu) | |
| 61 | { | |
| 87353d8a RB |
62 | extern struct plat_smp_ops *mp_ops; /* private */ |
| 63 | ||
| 64 | mp_ops->send_ipi_single(cpu, SMP_RESCHEDULE_YOURSELF); | |
| 1da177e4 LT |
65 | } |
| 66 | ||
| 1b2bc75c RB |
67 | #ifdef CONFIG_HOTPLUG_CPU |
| 68 | static inline int __cpu_disable(void) | |
| 69 | { | |
| 70342287 | 70 | extern struct plat_smp_ops *mp_ops; /* private */ |
| 1b2bc75c RB |
71 | |
| 72 | return mp_ops->cpu_disable(); | |
| 73 | } | |
| 74 | ||
| 75 | static inline void __cpu_die(unsigned int cpu) | |
| 76 | { | |
| 70342287 | 77 | extern struct plat_smp_ops *mp_ops; /* private */ |
| 1b2bc75c RB |
78 | |
| 79 | mp_ops->cpu_die(cpu); | |
| 80 | } | |
| 81 | ||
| 82 | extern void play_dead(void); | |
| 83 | #endif | |
| 84 | ||
| 1da177e4 LT |
85 | extern asmlinkage void smp_call_function_interrupt(void); |
| 86 | ||
| eef34ec5 RB |
87 | static inline void arch_send_call_function_single_ipi(int cpu) |
| 88 | { | |
| 70342287 | 89 | extern struct plat_smp_ops *mp_ops; /* private */ |
| eef34ec5 RB |
90 | |
| 91 | mp_ops->send_ipi_mask(&cpumask_of_cpu(cpu), SMP_CALL_FUNCTION); | |
| 92 | } | |
| 93 | ||
| 94 | static inline void arch_send_call_function_ipi_mask(const struct cpumask *mask) | |
| 95 | { | |
| 70342287 | 96 | extern struct plat_smp_ops *mp_ops; /* private */ |
| eef34ec5 RB |
97 | |
| 98 | mp_ops->send_ipi_mask(mask, SMP_CALL_FUNCTION); | |
| 99 | } | |
| 2f304c0a | 100 | |
| 7aa1c8f4 RB |
101 | #if defined(CONFIG_KEXEC) |
| 102 | extern void (*dump_ipi_function_ptr)(void *); | |
| 103 | void dump_send_ipi(void (*dump_ipi_callback)(void *)); | |
| 104 | #endif | |
| 1da177e4 | 105 | #endif /* __ASM_SMP_H */ |