1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
#ifndef _ASM_X86_IPI_H
#define _ASM_X86_IPI_H
#ifdef CONFIG_X86_LOCAL_APIC
/*
* Copyright 2004 James Cleverdon, IBM.
* Subject to the GNU Public License, v.2
*
* Generic APIC InterProcessor Interrupt code.
*
* Moved to include file by James Cleverdon from
* arch/x86-64/kernel/smp.c
*
* Copyrights from kernel/smp.c:
*
* (c) 1995 Alan Cox, Building #3 <alan@redhat.com>
* (c) 1998-99, 2000 Ingo Molnar <mingo@redhat.com>
* (c) 2002,2003 Andi Kleen, SuSE Labs.
* Subject to the GNU Public License, v.2
*/
#include <asm/hw_irq.h>
#include <asm/apic.h>
#include <asm/smp.h>
/*
* the following functions deal with sending IPIs between CPUs.
*
* We use 'broadcast', CPU->CPU IPIs and self-IPIs too.
*/
static inline unsigned int __prepare_ICR(unsigned int shortcut, int vector,
unsigned int dest)
{
unsigned int icr = shortcut | dest;
switch (vector) {
default:
icr |= APIC_DM_FIXED | vector;
break;
case NMI_VECTOR:
icr |= APIC_DM_NMI;
break;
}
return icr;
}
static inline int __prepare_ICR2(unsigned int mask)
{
return SET_APIC_DEST_FIELD(mask);
}
static inline void __xapic_wait_icr_idle(void)
{
while (native_apic_mem_read(APIC_ICR) & APIC_ICR_BUSY)
cpu_relax();
}
void __default_send_IPI_shortcut(unsigned int shortcut, int vector, unsigned int dest);
/*
* This is used to send an IPI with no shorthand notation (the destination is
* specified in bits 56 to 63 of the ICR).
*/
void __default_send_IPI_dest_field(unsigned int mask, int vector, unsigned int dest);
extern void default_send_IPI_single(int cpu, int vector);
extern void default_send_IPI_single_phys(int cpu, int vector);
extern void default_send_IPI_mask_sequence_phys(const struct cpumask *mask,
int vector);
extern void default_send_IPI_mask_allbutself_phys(const struct cpumask *mask,
int vector);
/* Avoid include hell */
#define NMI_VECTOR 0x02
extern int no_broadcast;
static inline void __default_local_send_IPI_allbutself(int vector)
{
if (no_broadcast || vector == NMI_VECTOR)
apic->send_IPI_mask_allbutself(cpu_online_mask, vector);
else
__default_send_IPI_shortcut(APIC_DEST_ALLBUT, vector, apic->dest_logical);
}
static inline void __default_local_send_IPI_all(int vector)
{
if (no_broadcast || vector == NMI_VECTOR)
apic->send_IPI_mask(cpu_online_mask, vector);
else
__default_send_IPI_shortcut(APIC_DEST_ALLINC, vector, apic->dest_logical);
}
#ifdef CONFIG_X86_32
extern void default_send_IPI_mask_sequence_logical(const struct cpumask *mask,
int vector);
extern void default_send_IPI_mask_allbutself_logical(const struct cpumask *mask,
int vector);
extern void default_send_IPI_mask_logical(const struct cpumask *mask,
int vector);
extern void default_send_IPI_allbutself(int vector);
extern void default_send_IPI_all(int vector);
extern void default_send_IPI_self(int vector);
#endif
#endif
#endif /* _ASM_X86_IPI_H */
|
