1/* $OpenBSD: i82489var.h,v 1.22 2025/11/12 09:48:52 hshoexer Exp $ */
2/* $NetBSD: i82489var.h,v 1.1 2003/02/26 21:26:10 fvdl Exp $ */
3
4/*-
5 * Copyright (c) 1998 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Frank van der Linden.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#ifndef _MACHINE_I82489VAR_H_
34#define _MACHINE_I82489VAR_H_
35
36#include "vmm.h"
37
38/*
39 * Software definitions belonging to Local APIC driver.
40 */
41
42#ifdef _KERNEL
43extern volatile u_int32_t local_apic[];
44extern volatile u_int32_t lapic_tpr;
45#endif
46
47extern u_int32_t (*lapic_readreg)(int);
48extern void (*lapic_writereg)(int, u_int32_t);
49u_int32_t lapic_cpu_number(void);
50
51/*
52 * "spurious interrupt vector"; vector used by interrupt which was
53 * aborted because the CPU masked it after it happened but before it
54 * was delivered.. "Oh, sorry, i caught you at a bad time".
55 * Low-order 4 bits must be all ones.
56 */
57extern void Xintrspurious(void);
58#define LAPIC_SPURIOUS_VECTOR 0xef
59
60/*
61 * Vector used for inter-processor interrupts.
62 */
63extern void Xintr_lapic_ipi(void);
64extern void Xrecurse_lapic_ipi(void);
65extern void Xresume_lapic_ipi(void);
66#define LAPIC_IPI_VECTOR 0xe0
67
68/*
69 * We take 0xf0-0xfe for fast IPI handlers.
70 */
71#define LAPIC_IPI_OFFSET 0xf0
72#define LAPIC_IPI_INVLTLB (LAPIC_IPI_OFFSET + 0)
73#define LAPIC_IPI_INVLPG (LAPIC_IPI_OFFSET + 1)
74#define LAPIC_IPI_INVLRANGE (LAPIC_IPI_OFFSET + 2)
75#define LAPIC_IPI_INVEPT (LAPIC_IPI_OFFSET + 3)
76
77extern void Xipi_invltlb(void);
78extern void Xipi_invltlb_pcid(void);
79extern void Xipi_invlpg(void);
80extern void Xipi_invlpg_pcid(void);
81extern void Xipi_invlrange(void);
82extern void Xipi_invlrange_pcid(void);
83#if NVMM > 0
84extern void Xipi_invept(void);
85#endif /* NVMM > 0 */
86
87/*
88 * Vector used for local apic timer interrupts.
89 */
90
91extern void Xintr_lapic_ltimer(void);
92extern void Xresume_lapic_ltimer(void);
93extern void Xrecurse_lapic_ltimer(void);
94#define LAPIC_TIMER_VECTOR 0xc0
95
96/*
97 * Vector used for Xen HVM Event Channel Interrupts.
98 */
99extern void Xintr_xen_upcall(void);
100extern void Xresume_xen_upcall(void);
101extern void Xrecurse_xen_upcall(void);
102#define LAPIC_XEN_VECTOR 0x70
103
104/*
105 * Vector used for Hyper-V Interrupts.
106 */
107extern void Xintr_hyperv_upcall(void);
108extern void Xresume_hyperv_upcall(void);
109extern void Xrecurse_hyperv_upcall(void);
110#define LAPIC_HYPERV_VECTOR 0x71
111
112struct cpu_info;
113
114extern void lapic_boot_init(paddr_t);
115extern void lapic_set_lvt(void);
116extern void lapic_enable(void);
117extern void lapic_disable(void);
118extern void lapic_calibrate_timer(struct cpu_info *ci);
119extern void lapic_startclock(void);
120extern void lapic_initclocks(void);
121
122#endif