Annotation of prex-old/sys/include/irq.h, Revision 1.1.1.1
1.1 nbrk 1: /*-
2: * Copyright (c) 2005, Kohsuke Ohtani
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: * 3. Neither the name of the author nor the names of any co-contributors
14: * may be used to endorse or promote products derived from this software
15: * without specific prior written permission.
16: *
17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27: * SUCH DAMAGE.
28: */
29:
30: #ifndef _IRQ_H
31: #define _IRQ_H
32:
33: #include <event.h>
34:
35: struct irq {
36: int vector; /* vector number */
37: int (*isr)(int); /* pointer to isr */
38: void (*ist)(int); /* pointer to ist */
39: u_int count; /* interrupt count */
40: int ist_request; /* number of ist request */
41: thread_t thread; /* thread id of ist */
42: struct event ist_event; /* event for ist */
43: };
44:
45: /*
46: * Return values from ISR.
47: */
48: #define INT_DONE 0 /* success */
49: #define INT_ERROR 1 /* interrupt not handled */
50: #define INT_CONTINUE 2 /* continue processing (Request IST) */
51:
52: /*
53: * Interrupt priority levels
54: */
55: #define IPL_NONE 0 /* nothing */
56: #define IPL_COMM 1 /* serial, parallel */
57: #define IPL_BLOCK 2 /* FDD, IDE */
58: #define IPL_NET 3 /* network */
59: #define IPL_DISPLAY 4 /* screen */
60: #define IPL_INPUT 5 /* keyboard, mouse */
61: #define IPL_AUDIO 6 /* audio */
62: #define IPL_BUS 7 /* USB, PCCARD */
63: #define IPL_RTC 8 /* RTC alarm */
64: #define IPL_PROFILE 9 /* profiling timer */
65: #define IPL_CLOCK 10 /* system clock timer */
66: #define IPL_HIGH 11 /* everything */
67:
68: #define NIPLS 12 /* number of IPLs */
69:
70: /*
71: * Macro to map an interrupt priority level to IST priority.
72: */
73: #define ISTPRIO(prio) (PRIO_IST + (IPL_HIGH - prio))
74:
75: extern int irq_attach(int, int, int, int (*)(int), void (*)(int));
76: extern void irq_detach(int);
77: extern void irq_lock(void);
78: extern void irq_unlock(void);
79: extern void irq_handler(int);
80: extern void irq_dump(void);
81: extern void irq_init(void);
82:
83: #endif /* !_IRQ_H */
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