1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2014 Garrett D'Amore <garrett@damore.org>
23 * Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved.
24 */
25
26#ifndef _SYS_AVINTR_H
27#define	_SYS_AVINTR_H
28
29
30#include <sys/mutex.h>
31#include <sys/dditypes.h>
32#include <sys/ddi_intr.h>
33
34#ifdef	__cplusplus
35extern "C" {
36#endif
37
38/*
39 * Period of autovector structures (add this in to get the next level).
40 */
41#define	MAXIPL	16
42#define	INT_IPL(x) (x)
43#define	AV_INT_SPURIOUS	-1
44
45typedef uint_t (*avfunc)(caddr_t, caddr_t);
46
47struct autovec {
48
49	/*
50	 * Interrupt handler and argument to pass to it.
51	 */
52
53	struct autovec *av_link;	/* pointer to next on in chain */
54	uint_t	(*av_vector)();
55	caddr_t	av_intarg1;
56	caddr_t	av_intarg2;
57	uint64_t *av_ticksp;
58	uint_t	av_prilevel;		/* priority level */
59
60	/*
61	 * Interrupt handle/id (like intrspec structure pointer) used to
62	 * identify a specific instance of interrupt handler in case we
63	 * have to remove the interrupt handler later.
64	 *
65	 */
66	void	*av_intr_id;
67	dev_info_t *av_dip;
68	ushort_t	av_flags;	/* pending flags */
69	struct autovec *av_ipl_link;	/* pointer to next on ipl chain */
70};
71
72#define	AV_PENTRY_VECTMASK	0xff	/* low 8 bit used for irqno */
73#define	AV_PENTRY_PEND	0x100	/* pending hardware interrupt */
74#define	AV_PENTRY_ONPROC	0x200	/* being serviced by CPU */
75#define	AV_PENTRY_LEVEL	0x8000	/* level-triggered interrupt */
76
77struct av_head {
78	struct 	autovec	*avh_link;
79	ushort_t	avh_hi_pri;
80	ushort_t	avh_lo_pri;
81};
82
83/* softing contains a bit field of software interrupts which are pending */
84struct softint {
85	int st_pending;
86};
87
88#ifdef _KERNEL
89
90extern kmutex_t av_lock;
91extern ddi_softint_hdl_impl_t softlevel_hdl[];
92extern ddi_softint_hdl_impl_t softlevel1_hdl;
93extern int add_avintr(void *intr_id, int lvl, avfunc xxintr, char *name,
94	int vect, caddr_t arg1, caddr_t arg2, uint64_t *, dev_info_t *);
95extern int add_nmintr(int lvl, avfunc nmintr, char *name, caddr_t arg);
96extern int add_avsoftintr(void *intr_id, int lvl, avfunc xxintr,
97	char *name, caddr_t arg1, caddr_t arg2);
98extern int rem_avsoftintr(void *intr_id, int lvl, avfunc xxintr);
99extern int av_softint_movepri(void *intr_id, int old_lvl);
100extern void update_avsoftintr_args(void *intr_id, int lvl, caddr_t arg2);
101extern void rem_avintr(void *intr_id, int lvl, avfunc xxintr, int vect);
102extern void wait_till_seen(int ipl);
103extern uint_t softlevel1(caddr_t, caddr_t);
104
105#endif	/* _KERNEL */
106
107#ifdef	__cplusplus
108}
109#endif
110
111#endif /* _SYS_AVINTR_H */
112