1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
/* $OpenBSD: intr.h,v 1.8 2002/03/14 03:15:52 millert Exp $ */
/* $NetBSD: intr.h,v 1.2 1997/07/24 05:43:08 scottr Exp $ */
/*-
* Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _HP300_INTR_H_
#define _HP300_INTR_H_
#include <machine/psl.h>
#ifdef _HP300_INTR_H_PRIVATE
#include <sys/queue.h>
/*
* The location and size of the autovectored interrupt portion
* of the vector table.
*/
#define ISRLOC 0x18
#define NISR 8
struct isr {
LIST_ENTRY(isr) isr_link;
int (*isr_func)(void *);
void *isr_arg;
int isr_ipl;
int isr_priority;
};
#endif /* _HP300_INTR_H_PRIVATE */
/*
* Interrupt "levels". These are a more abstract representation
* of interrupt levels, and do not have the same meaning as m68k
* CPU interrupt levels. They serve two purposes:
*
* - properly order ISRs in the list for that CPU ipl
* - compute CPU PSL values for the spl*() calls.
*/
#define IPL_NONE 0 /* disable only this interrupt */
#define IPL_BIO 1 /* disable block I/O interrupts */
#define IPL_NET 2 /* disable network interrupts */
#define IPL_TTY 3 /* disable terminal interrupts */
#define IPL_TTYNOBUF 4 /* IPL_TTY + higher ISR priority */
#define IPL_CLOCK 5 /* disable clock interrupts */
#define IPL_HIGH 6 /* disable all interrupts */
/*
* Convert PSL values to CPU IPLs and vice-versa.
*/
#define PSLTOIPL(x) (((x) >> 8) & 0xf)
#define IPLTOPSL(x) ((((x) & 0xf) << 8) | PSL_S)
#ifdef _KERNEL
/*
* spl functions; all but spl0 are done in-line
*/
#define _spl(s) \
({ \
register int _spl_r; \
\
__asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \
"=&d" (_spl_r) : "di" (s)); \
_spl_r; \
})
#define _splraise(s) \
({ \
int _spl_r; \
\
__asm __volatile (" \
clrl d0 ; \
movw sr,d0 ; \
movl d0,%0 ; \
andw #0x700,d0 ; \
movw %1,d1 ; \
andw #0x700,d1 ; \
cmpw d0,d1 ; \
jle 1f ; \
movw %1,sr ; \
1:" : \
"=&d" (_spl_r) : \
"di" (s) : \
"d0", "d1"); \
_spl_r; \
})
/* spl0 requires checking for software interrupts */
#define spl1() _spl(PSL_S|PSL_IPL1)
#define spl2() _spl(PSL_S|PSL_IPL2)
#define spl3() _spl(PSL_S|PSL_IPL3)
#define spl4() _spl(PSL_S|PSL_IPL4)
#define spl5() _spl(PSL_S|PSL_IPL5)
#define spl6() _spl(PSL_S|PSL_IPL6)
#define spl7() _spl(PSL_S|PSL_IPL7)
/*
* These four globals contain the appropriate PSL_S|PSL_IPL? values
* to raise interupt priority to the requested level.
*/
extern unsigned short hp300_bioipl;
extern unsigned short hp300_netipl;
extern unsigned short hp300_ttyipl;
extern unsigned short hp300_impipl;
/* These spl calls are _not_ to be used by machine-independent code. */
#define splhil() _splraise(PSL_S|PSL_IPL1)
#define splkbd() splhil()
#define splsoft() spl1()
/* These spl calls are used by machine-independent code. */
#define spllowersoftclock() splsoft()
#define splsoftclock() splsoft()
#define splsoftnet() splsoft()
#define splbio() _splraise(hp300_bioipl)
#define splnet() _splraise(hp300_netipl)
#define spltty() _splraise(hp300_ttyipl)
#define splimp() _splraise(hp300_impipl)
#define splclock() spl6()
#define splstatclock() spl6()
#define splvm() splimp()
#define splhigh() spl7()
/* watch out for side effects */
#define splx(s) ((s) & PSL_IPL ? _spl((s)) : spl0())
/*
* Simulated software interrupt register.
*/
extern volatile u_int8_t ssir;
#define SIR_NET 0x01
#define SIR_CLOCK 0x02
#define siron(mask) \
__asm __volatile ( "orb %0,_ssir" : : "i" ((mask)))
#define siroff(mask) \
__asm __volatile ( "andb %0,_ssir" : : "ir" (~(mask)));
#define setsoftnet() siron(SIR_NET)
#define setsoftclock() siron(SIR_CLOCK)
/* locore.s */
int spl0(void);
/* intr.c */
void intr_init(void);
void *intr_establish(int (*)(void *), void *, int, int);
void intr_disestablish(void *);
void intr_dispatch(int);
void intr_printlevels(void);
#endif /* _KERNEL */
#endif /* _HP300_INTR_H_ */
|
