1#include <linux/cpumask.h>
2#include <linux/interrupt.h>
3#include <linux/init.h>
4
5#include <linux/mm.h>
6#include <linux/delay.h>
7#include <linux/spinlock.h>
8#include <linux/kernel_stat.h>
9#include <linux/mc146818rtc.h>
10#include <linux/cache.h>
11#include <linux/cpu.h>
12#include <linux/module.h>
13
14#include <asm/smp.h>
15#include <asm/mtrr.h>
16#include <asm/tlbflush.h>
17#include <asm/mmu_context.h>
18#include <asm/apic.h>
19#include <asm/proto.h>
20#include <asm/ipi.h>
21
22void default_send_IPI_mask_sequence_phys(const struct cpumask *mask, int vector)
23{
24 unsigned long query_cpu;
25 unsigned long flags;
26
27
28
29
30
31
32 local_irq_save(flags);
33 for_each_cpu(query_cpu, mask) {
34 __default_send_IPI_dest_field(per_cpu(x86_cpu_to_apicid,
35 query_cpu), vector, APIC_DEST_PHYSICAL);
36 }
37 local_irq_restore(flags);
38}
39
40void default_send_IPI_mask_allbutself_phys(const struct cpumask *mask,
41 int vector)
42{
43 unsigned int this_cpu = smp_processor_id();
44 unsigned int query_cpu;
45 unsigned long flags;
46
47
48
49 local_irq_save(flags);
50 for_each_cpu(query_cpu, mask) {
51 if (query_cpu == this_cpu)
52 continue;
53 __default_send_IPI_dest_field(per_cpu(x86_cpu_to_apicid,
54 query_cpu), vector, APIC_DEST_PHYSICAL);
55 }
56 local_irq_restore(flags);
57}
58
59#ifdef CONFIG_X86_32
60
61void default_send_IPI_mask_sequence_logical(const struct cpumask *mask,
62 int vector)
63{
64 unsigned long flags;
65 unsigned int query_cpu;
66
67
68
69
70
71
72
73 local_irq_save(flags);
74 for_each_cpu(query_cpu, mask)
75 __default_send_IPI_dest_field(
76 early_per_cpu(x86_cpu_to_logical_apicid, query_cpu),
77 vector, apic->dest_logical);
78 local_irq_restore(flags);
79}
80
81void default_send_IPI_mask_allbutself_logical(const struct cpumask *mask,
82 int vector)
83{
84 unsigned long flags;
85 unsigned int query_cpu;
86 unsigned int this_cpu = smp_processor_id();
87
88
89
90 local_irq_save(flags);
91 for_each_cpu(query_cpu, mask) {
92 if (query_cpu == this_cpu)
93 continue;
94 __default_send_IPI_dest_field(
95 early_per_cpu(x86_cpu_to_logical_apicid, query_cpu),
96 vector, apic->dest_logical);
97 }
98 local_irq_restore(flags);
99}
100
101
102
103
104void default_send_IPI_mask_logical(const struct cpumask *cpumask, int vector)
105{
106 unsigned long mask = cpumask_bits(cpumask)[0];
107 unsigned long flags;
108
109 if (!mask)
110 return;
111
112 local_irq_save(flags);
113 WARN_ON(mask & ~cpumask_bits(cpu_online_mask)[0]);
114 __default_send_IPI_dest_field(mask, vector, apic->dest_logical);
115 local_irq_restore(flags);
116}
117
118void default_send_IPI_allbutself(int vector)
119{
120
121
122
123
124 if (!(num_online_cpus() > 1))
125 return;
126
127 __default_local_send_IPI_allbutself(vector);
128}
129
130void default_send_IPI_all(int vector)
131{
132 __default_local_send_IPI_all(vector);
133}
134
135void default_send_IPI_self(int vector)
136{
137 __default_send_IPI_shortcut(APIC_DEST_SELF, vector, apic->dest_logical);
138}
139
140
141static int convert_apicid_to_cpu(int apic_id)
142{
143 int i;
144
145 for_each_possible_cpu(i) {
146 if (per_cpu(x86_cpu_to_apicid, i) == apic_id)
147 return i;
148 }
149 return -1;
150}
151
152int safe_smp_processor_id(void)
153{
154 int apicid, cpuid;
155
156 if (!cpu_has_apic)
157 return 0;
158
159 apicid = hard_smp_processor_id();
160 if (apicid == BAD_APICID)
161 return 0;
162
163 cpuid = convert_apicid_to_cpu(apicid);
164
165 return cpuid >= 0 ? cpuid : 0;
166}
167#endif
168