sys/arch/sh3/include/intr.h

   1 /*      $NetBSD: intr.h,v 1.25 2008/04/28 20:23:35 martin Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
   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 _SH3_INTR_H_
  30 #define _SH3_INTR_H_
  31
  32 #include <sh3/psl.h>
  33
  34 /* Interrupt sharing types. */
  35 #define IST_NONE                0       /* none */
  36 #define IST_PULSE               1       /* pulsed */
  37 #define IST_EDGE                2       /* edge-triggered */
  38 #define IST_LEVEL               3       /* level-triggered */
  39
  40 /* Interrupt priority levels */
  41 #define _IPL_N          16
  42 #define _IPL_NSOFT      4
  43
  44 #define IPL_NONE        0       /* nothing */
  45 #define IPL_SOFTCLOCK   1
  46 #define IPL_SOFTBIO     2       /* timeouts */
  47 #define IPL_SOFTNET     3       /* protocol stacks */
  48 #define IPL_SOFTSERIAL  4       /* serial */
  49
  50 struct intc_intrhand {
  51         int     (*ih_func)(void *);
  52         void    *ih_arg;
  53         int     ih_level;       /* SR.I[0:3] value */
  54         int     ih_evtcode;     /* INTEVT or INTEVT2(SH7709/SH7709A) */
  55         int     ih_idx;         /* evtcode -> intrhand mapping */
  56 };
  57
  58 /* from 0x200 by 0x20 -> from 0 by 1 */
  59 #define EVTCODE_TO_MAP_INDEX(x)         (((x) >> 5) - 0x10)
  60 #define EVTCODE_TO_IH_INDEX(x)                                          \
  61         __intc_evtcode_to_ih[EVTCODE_TO_MAP_INDEX(x)]
  62 #define EVTCODE_IH(x)   (&__intc_intrhand[EVTCODE_TO_IH_INDEX(x)])
  63 extern int8_t __intc_evtcode_to_ih[];
  64 extern struct intc_intrhand __intc_intrhand[];
  65
  66 void intc_init(void);
  67 void *intc_intr_establish(int, int, int, int (*)(void *), void *);
  68 void intc_intr_disestablish(void *);
  69 void intc_intr_enable(int);
  70 void intc_intr_disable(int);
  71 void intc_intr(int, int, int);
  72
  73 void intpri_intr_priority(int evtcode, int level);
  74
  75 #endif /* !_SH3_INTR_H_ */