kernel: Make SMP support default (and non-optional).
[dragonfly.git] / sys / platform / pc32 / apic / lapic.h
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1/*
2 * Copyright (c) 1996, by Steve Passe
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. The name of the developer may NOT be used to endorse or promote products
11 * derived from this software without specific prior written permission.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 *
25 * $FreeBSD: src/sys/i386/include/mpapic.h,v 1.14.2.2 2000/09/30 02:49:34 ps Exp $
26 */
27
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28#ifndef _ARCH_APIC_LAPIC_H_
29#define _ARCH_APIC_LAPIC_H_
984263bc 30
3274eb88 31#include <machine_base/apic/apicreg.h>
984263bc 32
984263bc 33/*
2d901d56 34 * APIC ID <-> CPU ID mapping macros
984263bc 35 */
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36#define CPUID_TO_APICID(cpu_id) (cpu_id_to_apic_id[(cpu_id)])
37#define APICID_TO_CPUID(apic_id) (apic_id_to_cpu_id[(apic_id)])
984263bc 38
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39#ifndef _SYS_QUEUE_H_
40#include <sys/queue.h>
41#endif
42
43struct lapic_enumerator {
44 int lapic_prio;
45 TAILQ_ENTRY(lapic_enumerator) lapic_link;
46 int (*lapic_probe)(struct lapic_enumerator *);
f8ae0475 47 int (*lapic_enumerate)(struct lapic_enumerator *);
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48};
49
50#define LAPIC_ENUM_PRIO_MPTABLE 20
51#define LAPIC_ENUM_PRIO_MADT 40
52
cb7d6921 53extern volatile lapic_t *lapic;
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54extern int cpu_id_to_apic_id[];
55extern int apic_id_to_cpu_id[];
1d6d7089 56extern int lapic_enable;
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57
58void apic_dump(char*);
59void lapic_init(boolean_t);
41e2c7e0 60void lapic_set_cpuid(int, int);
ac032dad 61int lapic_config(void);
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62void lapic_enumerator_register(struct lapic_enumerator *);
63void set_apic_timer(int);
64int get_apic_timer_frequency(void);
65int read_apic_timer(void);
66void u_sleep(int);
67
1ebd15a6 68void lapic_map(vm_paddr_t);
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69int lapic_unused_apic_id(int);
70void lapic_fixup_noioapic(void);
71
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72#ifndef _MACHINE_SMP_H_
73#include <machine/smp.h>
74#endif
75
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76int apic_ipi(int, int, int);
77void selected_apic_ipi(cpumask_t, int, int);
78void single_apic_ipi(int, int, int);
79int single_apic_ipi_passive(int, int, int);
80
984263bc 81/*
3340ac41 82 * Send an IPI INTerrupt containing 'vector' to all CPUs EXCEPT myself
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83 */
84static __inline int
85all_but_self_ipi(int vector)
86{
0f7a3396 87 if (smp_active_mask == 1)
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88 return 0;
89 return apic_ipi(APIC_DEST_ALLESELF, vector, APIC_DELMODE_FIXED);
90}
91
3340ac41 92#endif /* _ARCH_APIC_LAPIC_H_ */