1/* $OpenBSD: i82093reg.h,v 1.9 2025/09/05 16:57:48 kettenis Exp $ */
2/* $NetBSD: i82093reg.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/*
36 * Typically, the first apic lives here.
37 */
38#define IOAPIC_BASE_DEFAULT 0xfec00000
39
40/*
41 * Memory-space registers.
42 */
43
44/*
45 * The externally visible registers are all 32 bits wide;
46 * store the register number of interest in IOAPIC_REG, and store/fetch
47 * the real value in IOAPIC_DATA.
48 */
49#define IOAPIC_REG 0x0000
50#define IOAPIC_DATA 0x0010
51
52/*
53 * Internal I/O APIC registers.
54 */
55
56#define IOAPIC_ID 0x00
57
58#define IOAPIC_ID_SHIFT 24
59#define IOAPIC_ID_MASK 0x0f000000
60
61/* Version, and maximum interrupt pin number. */
62
63#define IOAPIC_VER 0x01
64
65#define IOAPIC_VER_SHIFT 0
66#define IOAPIC_VER_MASK 0x000000ff
67
68#define IOAPIC_MAX_SHIFT 16
69#define IOAPIC_MAX_MASK 0x00ff0000
70
71/*
72 * Arbitration ID. Same format as IOAPIC_ID register.
73 */
74#define IOAPIC_ARB 0x02
75
76/*
77 * Redirection table registers.
78 */
79
80#define IOAPIC_REDHI(pin) (0x11 + ((pin)<<1))
81#define IOAPIC_REDLO(pin) (0x10 + ((pin)<<1))
82
83#define IOAPIC_REDHI_DEST_SHIFT 24 /* destination. */
84#define IOAPIC_REDHI_DEST_MASK 0xff000000
85
86#define IOAPIC_REDLO_MASK 0x00010000 /* 0=enabled; 1=masked */
87
88#define IOAPIC_REDLO_LEVEL 0x00008000 /* 0=edge, 1=level */
89#define IOAPIC_REDLO_RIRR 0x00004000 /* remote IRR; read only */
90#define IOAPIC_REDLO_ACTLO 0x00002000 /* 0=act. hi; 1=act. lo */
91#define IOAPIC_REDLO_DELSTS 0x00001000 /* 0=idle; 1=send pending */
92#define IOAPIC_REDLO_DSTMOD 0x00000800 /* 0=physical; 1=logical */
93
94#define IOAPIC_REDLO_DEL_MASK 0x00000700 /* del. mode mask */
95#define IOAPIC_REDLO_DEL_SHIFT 8
96
97#define IOAPIC_REDLO_DEL_FIXED 0
98#define IOAPIC_REDLO_DEL_LOPRI 1
99#define IOAPIC_REDLO_DEL_SMI 2
100#define IOAPIC_REDLO_DEL_NMI 4
101#define IOAPIC_REDLO_DEL_INIT 5
102#define IOAPIC_REDLO_DEL_EXTINT 7
103
104#define IOAPIC_REDLO_VECTOR_MASK 0x000000ff /* delivery vector */
105
106#define IMCR_ADDR 0x22
107#define IMCR_DATA 0x23
108
109#define IMCR_REGISTER 0x70
110#define IMCR_PIC 0x00
111#define IMCR_APIC 0x01
112
113#ifdef _KERNEL
114
115#include <machine/codepatch.h>
116
117#define ioapic_asm_ack(num) \
118 CODEPATCH_START ;\
119 movl $0,(local_apic+LAPIC_EOI)(%rip) ;\
120 CODEPATCH_END(CPTAG_EOI)
121
122#define ioapic_mask(num) \
123 movq IS_PIC(%r14),%rdi ;\
124 movl IS_PIN(%r14),%esi ;\
125 call ioapic_hwmask
126
127#define ioapic_unmask(num) \
128 cmpq $IREENT_MAGIC,IF_ERR(%rsp) ;\
129 jne 79f ;\
130 movq IS_PIC(%r14),%rdi ;\
131 movl IS_PIN(%r14),%esi ;\
132 call ioapic_hwunmask ;\
13379:
134
135#endif