1/* $NetBSD: i82489var.h,v 1.19 2017/05/23 08:54:39 nonaka Exp $ */
2
3/*-
4 * Copyright (c) 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Frank van der Linden.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifndef _X86_I82489VAR_H_
33#define _X86_I82489VAR_H_
34
35/*
36 * Software definitions belonging to Local APIC driver.
37 */
38
39#ifdef _KERNEL
40extern volatile vaddr_t local_apic_va;
41extern bool x2apic_mode;
42#endif
43
44/*
45 * "spurious interrupt vector"; vector used by interrupt which was
46 * aborted because the CPU masked it after it happened but before it
47 * was delivered.. "Oh, sorry, i caught you at a bad time".
48 * Low-order 4 bits must be all ones.
49 */
50extern void Xintrspurious(void);
51#define LAPIC_SPURIOUS_VECTOR 0xef
52
53/*
54 * Vectors used for inter-processor interrupts.
55 */
56extern void Xintr_lapic_ipi(void);
57extern void Xintr_x2apic_ipi(void);
58extern void Xrecurse_lapic_ipi(void);
59extern void Xresume_lapic_ipi(void);
60#define LAPIC_IPI_VECTOR 0xe0
61
62extern void Xintr_lapic_tlb(void);
63extern void Xintr_x2apic_tlb(void);
64#define LAPIC_TLB_VECTOR 0xe1
65
66/*
67 * Vector used for local apic timer interrupts.
68 */
69
70extern void Xintr_lapic_ltimer(void);
71extern void Xintr_x2apic_ltimer(void);
72extern void Xresume_lapic_ltimer(void);
73extern void Xrecurse_lapic_ltimer(void);
74#define LAPIC_TIMER_VECTOR 0xc0
75
76/*
77 * 'pin numbers' for local APIC
78 */
79#define LAPIC_PIN_TIMER 0
80#define LAPIC_PIN_PCINT 2
81#define LAPIC_PIN_LVINT0 3
82#define LAPIC_PIN_LVINT1 4
83#define LAPIC_PIN_LVERR 5
84
85
86struct cpu_info;
87
88extern void lapic_boot_init(paddr_t);
89extern void lapic_set_lvt(void);
90extern void lapic_enable(void);
91extern void lapic_calibrate_timer(struct cpu_info *ci);
92extern void lapic_initclocks(void);
93
94extern uint32_t lapic_readreg(u_int);
95extern void lapic_writereg(u_int, uint32_t);
96extern void lapic_write_tpri(uint32_t);
97extern void lapic_eoi(void);
98extern uint32_t lapic_cpu_number(void);
99extern bool lapic_is_x2apic(void);
100
101#endif
102