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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> | |
16 | #include <linux/threads.h> | |
17 | #include <linux/cpumask.h> | |
87353d8a | 18 | |
1da177e4 | 19 | #include <asm/atomic.h> |
87353d8a | 20 | #include <asm/smp-ops.h> |
1da177e4 | 21 | |
0ab7aefc RB |
22 | extern int smp_num_siblings; |
23 | extern cpumask_t cpu_sibling_map[]; | |
24 | ||
39c715b7 | 25 | #define raw_smp_processor_id() (current_thread_info()->cpu) |
1da177e4 LT |
26 | |
27 | /* Map from cpu id to sequential logical cpu number. This will only | |
28 | not be idempotent when cpus failed to come on-line. */ | |
29 | extern int __cpu_number_map[NR_CPUS]; | |
30 | #define cpu_number_map(cpu) __cpu_number_map[cpu] | |
31 | ||
32 | /* The reverse map from sequential logical cpu number to cpu id. */ | |
33 | extern int __cpu_logical_map[NR_CPUS]; | |
34 | #define cpu_logical_map(cpu) __cpu_logical_map[cpu] | |
35 | ||
36 | #define NO_PROC_ID (-1) | |
37 | ||
1da177e4 LT |
38 | #define SMP_RESCHEDULE_YOURSELF 0x1 /* XXX braindead */ |
39 | #define SMP_CALL_FUNCTION 0x2 | |
ddcdb1b4 DD |
40 | /* Octeon - Tell another core to flush its icache */ |
41 | #define SMP_ICACHE_FLUSH 0x4 | |
42 | ||
1da177e4 | 43 | |
1da177e4 LT |
44 | extern void asmlinkage smp_bootstrap(void); |
45 | ||
46 | /* | |
47 | * this function sends a 'reschedule' IPI to another CPU. | |
48 | * it goes straight through and wastes no time serializing | |
49 | * anything. Worst case is that we lose a reschedule ... | |
50 | */ | |
51 | static inline void smp_send_reschedule(int cpu) | |
52 | { | |
87353d8a RB |
53 | extern struct plat_smp_ops *mp_ops; /* private */ |
54 | ||
55 | mp_ops->send_ipi_single(cpu, SMP_RESCHEDULE_YOURSELF); | |
1da177e4 LT |
56 | } |
57 | ||
58 | extern asmlinkage void smp_call_function_interrupt(void); | |
59 | ||
2f304c0a JA |
60 | extern void arch_send_call_function_single_ipi(int cpu); |
61 | extern void arch_send_call_function_ipi(cpumask_t mask); | |
62 | ||
1da177e4 | 63 | #endif /* __ASM_SMP_H */ |