i82093var.h revision 1.3 
1/*	$OpenBSD: i82093var.h,v 1.3 2004/06/23 17:14:31 niklas 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 * 3. All advertising materials mentioning features or use of this software
22 *    must display the following acknowledgement:
23 *        This product includes software developed by the NetBSD
24 *        Foundation, Inc. and its contributors.
25 * 4. Neither the name of The NetBSD Foundation nor the names of its
26 *    contributors may be used to endorse or promote products derived
27 *    from this software without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
30 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
31 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
32 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
33 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
34 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
35 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
36 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
37 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
38 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
39 * POSSIBILITY OF SUCH DAMAGE.
40 */
41
42#ifndef _I386_I82093VAR_H_
43#define _I386_I82093VAR_H_
44
45#include <machine/apicvar.h>
46
47struct ioapic_pin
48{
49	struct intrhand		*ip_handler;
50	struct ioapic_pin	*ip_next; /* next pin on this vector */
51	struct mp_intr_map 	*ip_map;
52	int			ip_vector; /* IDT vector */
53	int			ip_type;
54	int			ip_minlevel;
55	int			ip_maxlevel;
56};
57
58struct ioapic_softc {
59	struct 			device sc_dev;	/* generic device glue */
60	struct ioapic_softc	*sc_next;
61	int			sc_apicid;
62	int			sc_apic_vers;
63	int			sc_apic_sz;	/* apic size*/
64	int			sc_flags;
65	paddr_t			sc_pa;		/* PA of ioapic */
66	volatile u_int32_t	*sc_reg;	/* KVA of ioapic addr */
67	volatile u_int32_t	*sc_data;	/* KVA of ioapic data */
68	struct ioapic_pin	*sc_pins;	/* sc_apic_sz entries */
69};
70
71/*
72 * MP: intr_handle_t is bitfielded.
73 * ih&0xff -> line number.
74 * ih&0x10000000 -> if 0, old-style isa irq; if 1, routed via ioapic.
75 * (ih&0xff0000)>>16 -> ioapic id.
76 * (ih&0x00ff00)>>8 -> ioapic line.
77 */
78
79#define APIC_INT_VIA_APIC	0x10000000
80#define APIC_INT_APIC_MASK	0x00ff0000
81#define APIC_INT_APIC_SHIFT	16
82#define APIC_INT_PIN_MASK	0x0000ff00
83#define APIC_INT_PIN_SHIFT	8
84
85#define APIC_IRQ_APIC(x) ((x & APIC_INT_APIC_MASK) >> APIC_INT_APIC_SHIFT)
86#define APIC_IRQ_PIN(x) ((x & APIC_INT_PIN_MASK) >> APIC_INT_PIN_SHIFT)
87
88/* I/O APIC ID remapping helper macros. */
89#define IOAPIC_REMAP_MASK	(IOAPIC_ID_MASK >> IOAPIC_ID_SHIFT)
90#define IOAPIC_REMAP_FLAG	((IOAPIC_REMAP_MASK + 1) << 1)
91#define IOAPIC_REMAP(old_id, new_id) \
92    (ioapic_id_remap[(old_id)] = IOAPIC_REMAP_FLAG | (new_id))
93#define IOAPIC_REMAPPED(id)	(ioapic_id_remap[(id)] & IOAPIC_REMAP_FLAG)
94#define IOAPIC_REMAPPED_ID(id)	\
95    (IOAPIC_REMAPPED(id) ? ioapic_id_remap[(id)] & IOAPIC_REMAP_MASK : (id))
96
97void   *apic_intr_establish(int, int, int, int (*)(void *), void *, char *);
98void	apic_intr_disestablish(void *);
99
100void	ioapic_print_redir(struct ioapic_softc *, char *, int);
101void	ioapic_format_redir(char *, char *, int, u_int32_t, u_int32_t);
102struct ioapic_softc *ioapic_find(int);
103struct ioapic_softc *ioapic_find_bybase(int);
104
105void	ioapic_enable(void);
106void	lapic_vectorset(void); /* XXX */
107
108extern int ioapic_bsp_id;
109extern int nioapics;
110extern struct ioapic_softc *ioapics;
111extern u_int16_t ioapic_id_map;
112extern u_int8_t ioapic_id_remap[];
113
114#endif /* !_I386_I82093VAR_H_ */
115