kernel: Make SMP support default (and non-optional).
[dragonfly.git] / sys / platform / pc64 / apic / lapic.h
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1/*
2 * Copyright (c) 1996, by Steve Passe
3 * Copyright (c) 2008 The DragonFly Project.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. The name of the developer may NOT be used to endorse or promote products
12 * derived from this software without specific prior written permission.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: src/sys/i386/include/mpapic.h,v 1.14.2.2 2000/09/30 02:49:34 ps Exp $
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27 */
28
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29#ifndef _ARCH_APIC_LAPIC_H_
30#define _ARCH_APIC_LAPIC_H_
c8fe38ae 31
83c8d73e 32#include <machine_base/apic/apicreg.h>
c8fe38ae 33
c8fe38ae 34/*
fbac0dc4 35 * APIC ID <-> CPU ID mapping macros
c8fe38ae 36 */
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37#define CPUID_TO_APICID(cpu_id) (cpu_id_to_apic_id[(cpu_id)])
38#define APICID_TO_CPUID(apic_id) (apic_id_to_cpu_id[(apic_id)])
c8fe38ae 39
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40#ifndef _SYS_QUEUE_H_
41#include <sys/queue.h>
42#endif
43
44struct lapic_enumerator {
45 int lapic_prio;
46 TAILQ_ENTRY(lapic_enumerator) lapic_link;
47 int (*lapic_probe)(struct lapic_enumerator *);
f8ae0475 48 int (*lapic_enumerate)(struct lapic_enumerator *);
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49};
50
51#define LAPIC_ENUM_PRIO_MPTABLE 20
52#define LAPIC_ENUM_PRIO_MADT 40
53
83c8d73e 54extern volatile lapic_t *lapic;
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55extern int cpu_id_to_apic_id[];
56extern int apic_id_to_cpu_id[];
2e0ed166 57extern int lapic_enable;
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58
59void apic_dump(char*);
60void lapic_init(boolean_t);
0e44391a 61void lapic_set_cpuid(int, int);
3566408b 62int lapic_config(void);
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63void lapic_enumerator_register(struct lapic_enumerator *);
64void set_apic_timer(int);
65int get_apic_timer_frequency(void);
66int read_apic_timer(void);
67void u_sleep(int);
68
13481c87 69void lapic_map(vm_paddr_t);
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70int lapic_unused_apic_id(int);
71void lapic_fixup_noioapic(void);
72
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73#ifndef _MACHINE_SMP_H_
74#include <machine/smp.h>
75#endif
76
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77int apic_ipi(int, int, int);
78void selected_apic_ipi(cpumask_t, int, int);
79void single_apic_ipi(int, int, int);
80int single_apic_ipi_passive(int, int, int);
81
c8fe38ae 82/*
83c8d73e 83 * Send an IPI INTerrupt containing 'vector' to all CPUs EXCEPT myself
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84 */
85static __inline int
86all_but_self_ipi(int vector)
87{
88 if (smp_active_mask == 1)
89 return 0;
90 return apic_ipi(APIC_DEST_ALLESELF, vector, APIC_DELMODE_FIXED);
91}
92
2b6cd37e 93#endif /* _ARCH_APIC_LAPIC_H_ */