1 /* $NetBSD: intr.h,v 1.23 2023/07/11 11:13:32 riastradh Exp $ */
2
3 /*
4 * Copyright (C) 1997 Scott Reynolds
5 * Copyright (C) 1998 Darrin Jewell
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #ifndef _NEXT68K_INTR_H_
32 #define _NEXT68K_INTR_H_
33
34 #include <machine/psl.h>
35
36 /* Probably want to dealwith IPL's here @@@ */
37
38 #if defined(_KERNEL) || defined(_KMEMUSER)
39 typedef struct {
40 uint16_t _psl;
41 } ipl_cookie_t;
42 #endif
43
44 #ifdef _KERNEL
45
46 /* spl0 requires checking for software interrupts */
47
48 /* watch out for side effects */
49 #define splx(s) ((s) & PSL_IPL ? _spl(s) : spl0())
50
51 #define splsoftbio() splraise1()
52 #define splsoftnet() splraise1()
53 #define splsoftclock() splraise1()
54 #define splsoftserial() splraise1()
55 #define splvm() splraise6()
56 #define splhigh() spl7()
57 #define splsched() spl7()
58
59 #define spldma() splraise6()
60
61 /****************************************************************/
62
63 #define IPL_NONE 0
64 #define IPL_SOFTCLOCK 1
65 #define IPL_SOFTBIO 2
66 #define IPL_SOFTNET 3
67 #define IPL_SOFTSERIAL 4
68 #define IPL_VM 5
69 #define IPL_SCHED 6
70 #define IPL_HIGH 7
71 #define NIPL 8
72
73 extern const uint16_t ipl2psl_table[NIPL];
74
75 typedef int ipl_t;
76
77 static __inline ipl_cookie_t
makeiplcookie(ipl_t ipl)78 makeiplcookie(ipl_t ipl)
79 {
80
81 return (ipl_cookie_t){._psl = ipl2psl_table[ipl]};
82 }
83
84 static __inline int
splraiseipl(ipl_cookie_t icookie)85 splraiseipl(ipl_cookie_t icookie)
86 {
87
88 return _splraise(icookie._psl);
89 }
90
91 /****************************************************************/
92
93 /* locore.s */
94 int spl0(void);
95
96 extern volatile u_long *intrstat;
97 extern volatile u_long *intrmask;
98 #define INTR_SETMASK(x) (*intrmask = (x))
99 #define INTR_ENABLE(x) (*intrmask |= NEXT_I_BIT(x))
100 #define INTR_DISABLE(x) (*intrmask &= (~NEXT_I_BIT(x)))
101 #define INTR_OCCURRED(x) (*intrstat & NEXT_I_BIT(x))
102
103 #endif /* _KERNEL */
104
105 #endif /* _NEXT68K_INTR_H_ */
106