intr.h revision 1.16 
1/*	$NetBSD: intr.h,v 1.16 2020/04/16 21:56:42 rin Exp $ */
2
3/*-
4 * Copyright (c) 2007 Michael Lorenz
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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef _POWERPC_INTR_MACHDEP_H_
30#define _POWERPC_INTR_MACHDEP_H_
31
32#define	__HAVE_FAST_SOFTINTS	1
33
34
35/* Interrupt priority `levels'. */
36#define	IPL_NONE		0	/* nothing */
37#define	IPL_SOFTCLOCK		1	/* timeouts */
38#define	IPL_SOFTBIO		2	/* block I/O */
39#define	IPL_SOFTNET		3	/* protocol stacks */
40#define	IPL_SOFTSERIAL		4	/* serial */
41#define	IPL_VM			5	/* memory allocation */
42#define	IPL_SCHED		6
43#define	IPL_HIGH		7	/* everything */
44#define	NIPL			8
45
46/* Interrupt sharing types. */
47#define	IST_NONE		0	/* none */
48#define	IST_PULSE		1	/* pulsed */
49#define	IST_EDGE		2	/* falling edge triggered */
50#define	IST_LEVEL		3	/* low level triggered */
51
52#define IST_EDGE_FALLING	IST_EDGE
53#define IST_EDGE_RISING		4	/* rising edge triggered */
54#define IST_LEVEL_LOW		IST_LEVEL
55#define IST_LEVEL_HIGH		5	/* high level triggered */
56
57#if !defined(_LOCORE)
58void *	intr_establish(int, int, int, int (*)(void *), void *);
59void *	intr_establish_xname(int, int, int, int (*)(void *), void *,
60	    const char *);
61void	intr_disestablish(void *);
62const char *
63	intr_typename(int);
64
65int	splraise(int);
66int	spllower(int);
67void	splx(int);
68
69#if !defined(_MODULE)
70
71#include <powerpc/softint.h>
72
73void	genppc_cpu_configure(void);
74
75/*
76 * Interrupt handler chains.  intr_establish() inserts a handler into
77 * the list.  The handler is called with its (single) argument.
78 */
79struct intrhand {
80	int	(*ih_fun)(void *);
81	void	*ih_arg;
82	struct	intrhand *ih_next;
83	int	ih_ipl;
84	int	ih_virq;
85	char	ih_xname[INTRDEVNAMEBUF];
86};
87
88void softint_fast_dispatch(struct lwp *, int);
89
90#ifdef __HAVE_FAST_SOFTINTS
91#define softint_init_md		powerpc_softint_init_md
92#define softint_trigger		powerpc_softint_trigger
93#endif
94
95#ifdef __IMASK_T
96typedef __IMASK_T imask_t;
97#else
98typedef uint32_t imask_t;
99#endif
100
101extern imask_t imask[];
102
103#define NVIRQ		(sizeof(imask_t)*8)	/* 32 virtual IRQs */
104#ifndef NIRQ
105#define NIRQ		256	/* up to 256 HW IRQs */
106#endif
107
108#define HWIRQ_MAX       (NVIRQ - 1)
109#define HWIRQ_MASK     	(~(imask_t)0 >> 1)
110
111#define	PIC_VIRQ_TO_MASK(v)	__BIT(HWIRQ_MAX - (v))
112#define PIC_VIRQ_MS_PENDING(p)	__builtin_clz(p)
113
114#endif /* !_MODULE */
115
116#define spl0()		spllower(0)
117
118typedef int ipl_t;
119typedef struct {
120	ipl_t _ipl;
121} ipl_cookie_t;
122
123static __inline ipl_cookie_t
124makeiplcookie(ipl_t ipl)
125{
126
127	return (ipl_cookie_t){._ipl = ipl};
128}
129
130static __inline int
131splraiseipl(ipl_cookie_t icookie)
132{
133
134	return splraise(icookie._ipl);
135}
136
137#include <sys/spl.h>
138
139#endif /* _LOCORE */
140
141#endif /* _POWERPC_INTR_MACHDEP_H_ */
142