intr_machdep.h revision 331017 
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2004 Juli Mallett <jmallett@FreeBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD: stable/11/sys/mips/include/intr_machdep.h 331017 2018-03-15 19:08:33Z kevans $
29 */
30
31#ifndef	_MACHINE_INTR_MACHDEP_H_
32#define	_MACHINE_INTR_MACHDEP_H_
33
34#include <sys/vmmeter.h>
35#include <machine/atomic.h>
36
37#if defined(CPU_RMI) || defined(CPU_NLM)
38#define XLR_MAX_INTR 64
39#else
40#define NHARD_IRQS	6
41#define NSOFT_IRQS	2
42#endif
43
44struct trapframe;
45
46void cpu_init_interrupts(void);
47void cpu_establish_hardintr(const char *, driver_filter_t *, driver_intr_t *,
48    void *, int, int, void **);
49void cpu_establish_softintr(const char *, driver_filter_t *, void (*)(void*),
50    void *, int, int, void **);
51void cpu_intr(struct trapframe *);
52
53/*
54 * Allow a platform to override the default hard interrupt mask and unmask
55 * functions. The 'arg' can be cast safely to an 'int' and holds the mips
56 * hard interrupt number to mask or unmask.
57 */
58typedef void (*cpu_intr_mask_t)(void *arg);
59typedef void (*cpu_intr_unmask_t)(void *arg);
60void cpu_set_hardintr_mask_func(cpu_intr_mask_t func);
61void cpu_set_hardintr_unmask_func(cpu_intr_unmask_t func);
62
63/*
64 * Opaque datatype that represents intr counter
65 */
66typedef unsigned long* mips_intrcnt_t;
67
68mips_intrcnt_t mips_intrcnt_create(const char *);
69void mips_intrcnt_setname(mips_intrcnt_t, const char *);
70
71static __inline void
72mips_intrcnt_inc(mips_intrcnt_t counter)
73{
74	if (counter)
75		atomic_add_long(counter, 1);
76	PCPU_INC(cnt.v_intr);
77}
78#endif /* !_MACHINE_INTR_MACHDEP_H_ */
79