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b920de1b DH |
1 | /* MN10300 SMP support |
2 | * | |
3 | * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. | |
4 | * Written by David Howells (dhowells@redhat.com) | |
5 | * | |
368dd5ac AT |
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 | * | |
b920de1b DH |
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 | ||
368dd5ac AT |
24 | #ifndef __ASSEMBLY__ |
25 | #include <linux/threads.h> | |
26 | #include <linux/cpumask.h> | |
c0691143 | 27 | #include <linux/thread_info.h> |
368dd5ac AT |
28 | #endif |
29 | ||
b920de1b | 30 | #ifdef CONFIG_SMP |
368dd5ac AT |
31 | #include <proc/smp-regs.h> |
32 | ||
33 | #define RESCHEDULE_IPI 63 | |
34 | #define CALL_FUNC_SINGLE_IPI 192 | |
35 | #define LOCAL_TIMER_IPI 193 | |
36 | #define FLUSH_CACHE_IPI 194 | |
37 | #define CALL_FUNCTION_NMI_IPI 195 | |
67ddb405 | 38 | #define DEBUGGER_NMI_IPI 196 |
368dd5ac AT |
39 | |
40 | #define SMP_BOOT_IRQ 195 | |
41 | ||
42 | #define RESCHEDULE_GxICR_LV GxICR_LEVEL_6 | |
43 | #define CALL_FUNCTION_GxICR_LV GxICR_LEVEL_4 | |
44 | #define LOCAL_TIMER_GxICR_LV GxICR_LEVEL_4 | |
45 | #define FLUSH_CACHE_GxICR_LV GxICR_LEVEL_0 | |
46 | #define SMP_BOOT_GxICR_LV GxICR_LEVEL_0 | |
67ddb405 | 47 | #define DEBUGGER_GxICR_LV CONFIG_DEBUGGER_IRQ_LEVEL |
368dd5ac AT |
48 | |
49 | #define TIME_OUT_COUNT_BOOT_IPI 100 | |
50 | #define DELAY_TIME_BOOT_IPI 75000 | |
51 | ||
52 | ||
53 | #ifndef __ASSEMBLY__ | |
54 | ||
55 | /** | |
56 | * raw_smp_processor_id - Determine the raw CPU ID of the CPU running it | |
57 | * | |
58 | * What we really want to do is to use the CPUID hardware CPU register to get | |
59 | * this information, but accesses to that aren't cached, and run at system bus | |
60 | * speed, not CPU speed. A copy of this value is, however, stored in the | |
61 | * thread_info struct, and that can be cached. | |
62 | * | |
63 | * An alternate way of dealing with this could be to use the EPSW.S bits to | |
64 | * cache this information for systems with up to four CPUs. | |
65 | */ | |
e460d644 | 66 | #define arch_smp_processor_id() (CPUID) |
368dd5ac | 67 | #if 0 |
e460d644 | 68 | #define raw_smp_processor_id() (arch_smp_processor_id()) |
368dd5ac AT |
69 | #else |
70 | #define raw_smp_processor_id() (current_thread_info()->cpu) | |
b920de1b DH |
71 | #endif |
72 | ||
368dd5ac AT |
73 | static inline int cpu_logical_map(int cpu) |
74 | { | |
75 | return cpu; | |
76 | } | |
77 | ||
78 | static inline int cpu_number_map(int cpu) | |
79 | { | |
80 | return cpu; | |
81 | } | |
82 | ||
83 | ||
84 | extern cpumask_t cpu_boot_map; | |
85 | ||
86 | extern void smp_init_cpus(void); | |
87 | extern void smp_cache_interrupt(void); | |
88 | extern void send_IPI_allbutself(int irq); | |
c0691143 | 89 | extern int smp_nmi_call_function(void (*func)(void *), void *info, int wait); |
368dd5ac AT |
90 | |
91 | extern void arch_send_call_function_single_ipi(int cpu); | |
92 | extern void arch_send_call_function_ipi_mask(const struct cpumask *mask); | |
93 | ||
94 | #ifdef CONFIG_HOTPLUG_CPU | |
95 | extern int __cpu_disable(void); | |
96 | extern void __cpu_die(unsigned int cpu); | |
97 | #endif /* CONFIG_HOTPLUG_CPU */ | |
98 | ||
368dd5ac AT |
99 | #endif /* __ASSEMBLY__ */ |
100 | #else /* CONFIG_SMP */ | |
101 | #ifndef __ASSEMBLY__ | |
102 | ||
103 | static inline void smp_init_cpus(void) {} | |
c0691143 | 104 | #define raw_smp_processor_id() 0 |
368dd5ac AT |
105 | |
106 | #endif /* __ASSEMBLY__ */ | |
107 | #endif /* CONFIG_SMP */ | |
108 | ||
109 | #endif /* _ASM_SMP_H */ |