intr_machdep.h revision 85235 
1/*-
2 * Copyright (c) 2001 Jake Burkholder.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/sys/sparc64/include/intr_machdep.h 85235 2001-10-20 16:03:41Z jake $
27 */
28
29#ifndef	_MACHINE_INTR_MACHDEP_H_
30#define	_MACHINE_INTR_MACHDEP_H_
31
32#define	NPIL		(1 << 4)
33#define	NIV		(1 << 11)
34
35#define	IQ_SIZE		(NPIL * 2)
36#define	IQ_MASK		(IQ_SIZE - 1)
37
38#define	IH_SHIFT	3
39#define	IQE_SHIFT	5
40#define	IV_SHIFT	5
41
42#define	PIL_LOW		1	/* stray interrupts */
43#define	PIL_ITHREAD	2	/* interrupts that use ithreads */
44#define	PIL_FAST	13	/* fast interrupts */
45#define	PIL_TICK	14
46
47typedef	void ih_func_t(struct trapframe *);
48typedef	void iv_func_t(void *);
49
50struct intr_handler {
51	ih_func_t *ih_func;
52};
53
54struct iqe {
55	u_int	iqe_tag;
56	u_int	iqe_pri;
57	u_long	iqe_vec;
58	iv_func_t *iqe_func;
59	void	*iqe_arg;
60};
61
62struct intr_queue {
63	struct	iqe iq_queue[IQ_SIZE];	/* must be first */
64	u_long	iq_head;
65	u_long	iq_tail;
66};
67
68struct ithd;
69
70struct intr_vector {
71	iv_func_t *iv_func;
72	void	*iv_arg;
73	struct	ithd *iv_ithd;
74	u_int	iv_pri;
75	u_int	iv_vec;
76};
77
78extern struct intr_handler intr_handlers[];
79extern struct intr_queue intr_queues[];
80extern struct intr_vector intr_vectors[];
81
82void	intr_setup(int level, ih_func_t *ihf, int pri, iv_func_t *ivf,
83		   void *iva);
84void	intr_init(void);
85int	inthand_add(const char *name, int vec, void (*handler)(void *),
86    void *arg, int flags, void **cookiep);
87int	inthand_remove(int vec, void *cookie);
88
89ih_func_t intr_dequeue;
90
91#endif
92