1/* $OpenBSD: i82093var.h,v 1.8 2025/09/05 16:57:48 kettenis Exp $ */
2/* $NetBSD: i82093var.h,v 1.1 2003/02/26 21:26:10 fvdl Exp $ */
3
4/*-
5 * Copyright (c) 2000 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by RedBack Networks Inc.
10 *
11 * Author: Bill Sommerfeld
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 * POSSIBILITY OF SUCH DAMAGE.
33 */
34
35#ifndef _MACHINE_I82093VAR_H_
36#define _MACHINE_I82093VAR_H_
37
38#include <machine/apicvar.h>
39
40struct ioapic_pin {
41 struct ioapic_pin *ip_next; /* next pin on this vector */
42 struct mp_intr_map *ip_map;
43 int ip_vector; /* IDT vector */
44 int ip_type;
45 struct cpu_info *ip_cpu; /* target CPU */
46};
47
48struct ioapic_softc {
49 struct pic sc_pic;
50 struct ioapic_softc *sc_next;
51 int sc_apicid;
52 int sc_apic_vers;
53 int sc_apic_vecbase; /* global int base if ACPI */
54 int sc_apic_sz; /* apic size*/
55 int sc_flags;
56 bus_space_tag_t sc_memt;
57 bus_space_handle_t sc_memh;
58 struct ioapic_pin *sc_pins; /* sc_apic_sz entries */
59};
60
61/*
62 * MP: intr_handle_t is bitfielded.
63 * ih&0xff -> legacy irq number.
64 * ih&0x10000000 -> if 0, old-style isa irq; if 1, routed via ioapic.
65 * (ih&0xff0000)>>16 -> ioapic id.
66 * (ih&0x00ff00)>>8 -> ioapic pin.
67 */
68
69#define APIC_INT_VIA_APIC 0x10000000
70#define APIC_INT_VIA_MSG 0x20000000
71#define APIC_INT_VIA_MSGX 0x40000000
72#define APIC_INT_APIC_MASK 0x00ff0000
73#define APIC_INT_APIC_SHIFT 16
74#define APIC_INT_PIN_MASK 0x0000ff00
75#define APIC_INT_PIN_SHIFT 8
76
77#define APIC_IRQ_APIC(x) ((x & APIC_INT_APIC_MASK) >> APIC_INT_APIC_SHIFT)
78#define APIC_IRQ_PIN(x) ((x & APIC_INT_PIN_MASK) >> APIC_INT_PIN_SHIFT)
79#define APIC_IRQ_ISLEGACY(x) (!((x) & APIC_INT_VIA_APIC))
80#define APIC_IRQ_LEGACY_IRQ(x) ((x) & 0xff)
81
82void ioapic_print_redir(struct ioapic_softc *, char *, int);
83struct ioapic_softc *ioapic_find(int);
84struct ioapic_softc *ioapic_find_bybase(int);
85
86void ioapic_enable(void);
87
88extern int ioapic_bsp_id;
89extern int nioapics;
90extern struct ioapic_softc *ioapics;
91
92#endif /* !_MACHINE_I82093VAR_H_ */