Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
smp.h
Go to the documentation of this file.
1 /* MN10300 SMP support
2  *
3  * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
4  * Written by David Howells ([email protected])
5  *
6  * Modified by Matsushita Electric Industrial Co., Ltd.
7  * Modifications:
8  * 13-Nov-2006 MEI Define IPI-IRQ number and add inline/macro function
9  * for SMP support.
10  * 22-Jan-2007 MEI Add the define related to SMP_BOOT_IRQ.
11  * 23-Feb-2007 MEI Add the define related to SMP icahce invalidate.
12  * 23-Jun-2008 MEI Delete INTC_IPI.
13  * 22-Jul-2008 MEI Add smp_nmi_call_function and related defines.
14  * 04-Aug-2008 MEI Delete USE_DOIRQ_CACHE_IPI.
15  *
16  * This program is free software; you can redistribute it and/or
17  * modify it under the terms of the GNU General Public Licence
18  * as published by the Free Software Foundation; either version
19  * 2 of the Licence, or (at your option) any later version.
20  */
21 #ifndef _ASM_SMP_H
22 #define _ASM_SMP_H
23 
24 #ifndef __ASSEMBLY__
25 #include <linux/threads.h>
26 #include <linux/cpumask.h>
27 #endif
28 
29 #ifdef CONFIG_SMP
30 #include <proc/smp-regs.h>
31 
32 #define RESCHEDULE_IPI 63
33 #define CALL_FUNC_SINGLE_IPI 192
34 #define LOCAL_TIMER_IPI 193
35 #define FLUSH_CACHE_IPI 194
36 #define CALL_FUNCTION_NMI_IPI 195
37 #define DEBUGGER_NMI_IPI 196
38 
39 #define SMP_BOOT_IRQ 195
40 
41 #define RESCHEDULE_GxICR_LV GxICR_LEVEL_6
42 #define CALL_FUNCTION_GxICR_LV GxICR_LEVEL_4
43 #define LOCAL_TIMER_GxICR_LV GxICR_LEVEL_4
44 #define FLUSH_CACHE_GxICR_LV GxICR_LEVEL_0
45 #define SMP_BOOT_GxICR_LV GxICR_LEVEL_0
46 #define DEBUGGER_GxICR_LV CONFIG_DEBUGGER_IRQ_LEVEL
47 
48 #define TIME_OUT_COUNT_BOOT_IPI 100
49 #define DELAY_TIME_BOOT_IPI 75000
50 
51 
52 #ifndef __ASSEMBLY__
53 
65 #define arch_smp_processor_id() (CPUID)
66 #if 0
67 #define raw_smp_processor_id() (arch_smp_processor_id())
68 #else
69 #define raw_smp_processor_id() (current_thread_info()->cpu)
70 #endif
71 
72 static inline int cpu_logical_map(int cpu)
73 {
74  return cpu;
75 }
76 
77 static inline int cpu_number_map(int cpu)
78 {
79  return cpu;
80 }
81 
82 
83 extern cpumask_t cpu_boot_map;
84 
85 extern void smp_init_cpus(void);
86 extern void smp_cache_interrupt(void);
87 extern void send_IPI_allbutself(int irq);
88 extern int smp_nmi_call_function(smp_call_func_t func, void *info, int wait);
89 
91 extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
92 
93 #ifdef CONFIG_HOTPLUG_CPU
94 extern int __cpu_disable(void);
95 extern void __cpu_die(unsigned int cpu);
96 #endif /* CONFIG_HOTPLUG_CPU */
97 
98 #endif /* __ASSEMBLY__ */
99 #else /* CONFIG_SMP */
100 #ifndef __ASSEMBLY__
101 
102 static inline void smp_init_cpus(void) {}
103 
104 #endif /* __ASSEMBLY__ */
105 #endif /* CONFIG_SMP */
106 
107 #endif /* _ASM_SMP_H */