1/* $NetBSD: i82489var.h,v 1.15 2016/10/16 10:51:31 maxv 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
39static __inline uint32_t i82489_readreg(int);
40static __inline void i82489_writereg(int, uint32_t);
41
42#ifdef _KERNEL
43extern volatile uint32_t local_apic[];
44#endif
45
46static __inline uint32_t
47i82489_readreg(int reg)
48{
49 return *((volatile uint32_t *)(((volatile uint8_t *)local_apic)
50 + reg));
51}
52
53static __inline void
54i82489_writereg(int reg, uint32_t val)
55{
56 *((volatile uint32_t *)(((volatile uint8_t *)local_apic) + reg)) = val;
57}
58
59#define lapic_cpu_number() (i82489_readreg(LAPIC_ID) >> LAPIC_ID_SHIFT)
60
61/*
62 * "spurious interrupt vector"; vector used by interrupt which was
63 * aborted because the CPU masked it after it happened but before it
64 * was delivered.. "Oh, sorry, i caught you at a bad time".
65 * Low-order 4 bits must be all ones.
66 */
67extern void Xintrspurious(void);
68#define LAPIC_SPURIOUS_VECTOR 0xef
69
70/*
71 * Vectors used for inter-processor interrupts.
72 */
73extern void Xintr_lapic_ipi(void);
74extern void Xrecurse_lapic_ipi(void);
75extern void Xresume_lapic_ipi(void);
76#define LAPIC_IPI_VECTOR 0xe0
77
78extern void Xintr_lapic_tlb(void);
79#define LAPIC_TLB_VECTOR 0xe1
80
81/*
82 * Vector used for local apic timer interrupts.
83 */
84
85extern void Xintr_lapic_ltimer(void);
86extern void Xresume_lapic_ltimer(void);
87extern void Xrecurse_lapic_ltimer(void);
88#define LAPIC_TIMER_VECTOR 0xc0
89
90/*
91 * 'pin numbers' for local APIC
92 */
93#define LAPIC_PIN_TIMER 0
94#define LAPIC_PIN_PCINT 2
95#define LAPIC_PIN_LVINT0 3
96#define LAPIC_PIN_LVINT1 4
97#define LAPIC_PIN_LVERR 5
98
99extern void Xintr_lapic0(void);
100extern void Xintr_lapic2(void);
101extern void Xintr_lapic3(void);
102extern void Xintr_lapic4(void);
103extern void Xintr_lapic5(void);
104
105
106struct cpu_info;
107
108extern void lapic_boot_init(paddr_t);
109extern void lapic_set_lvt(void);
110extern void lapic_enable(void);
111extern void lapic_calibrate_timer(struct cpu_info *ci);
112extern void lapic_initclocks(void);
113
114#endif
115