sys/arch/evbmips/include/intr.h

   1 /*      $NetBSD: intr.h,v 1.16 2008/04/28 20:23:17 martin Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2000, 2001 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jason R. Thorpe.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #ifndef _EVBMIPS_INTR_H_
  33 #define _EVBMIPS_INTR_H_
  34
  35 #include <sys/queue.h>
  36
  37 #define IPL_NONE        0       /* disable only this interrupt */
  38 #define IPL_SOFTCLOCK   1       /* software interrupts */
  39 #define IPL_SOFTBIO     1       /* software interrupts */
  40 #define IPL_SOFTNET     2       /* software interrupts */
  41 #define IPL_SOFTSERIAL  2       /* software interrupts */
  42 #define IPL_VM          3
  43 #define IPL_SCHED       4
  44 #define IPL_HIGH        4
  45
  46 #define _IPL_N          5       /* max IPL + 1 */
  47
  48 #define _IPL_SI0_FIRST  IPL_SOFTCLOCK
  49 #define _IPL_SI0_LAST   IPL_SOFTBIO
  50
  51 #define _IPL_SI1_FIRST  IPL_SOFTNET
  52 #define _IPL_SI1_LAST   IPL_SOFTSERIAL
  53
  54 #define IST_UNUSABLE    -1      /* interrupt cannot be used */
  55 #define IST_NONE        0       /* none (dummy) */
  56 #define IST_PULSE       1       /* pulsed */
  57 #define IST_EDGE        2       /* edge-triggered */
  58 #define IST_LEVEL       3       /* level-triggered */
  59 #define IST_LEVEL_HIGH  4       /* level triggered, active high */
  60 #define IST_LEVEL_LOW   5       /* level triggered, active low */
  61
  62 #ifdef  _KERNEL
  63
  64 #include <mips/locore.h>
  65
  66 extern const uint32_t ipl_sr_bits[_IPL_N];
  67
  68 #define spl0()          (void) _spllower(0)
  69 #define splx(s)         (void) _splset(s)
  70
  71 #define splsoft()       _splraise(ipl_sr_bits[IPL_SOFT])
  72
  73 typedef int ipl_t;
  74 typedef struct {
  75         ipl_t _sr;
  76 } ipl_cookie_t;
  77
  78 static inline ipl_cookie_t
  79 makeiplcookie(ipl_t ipl)
  80 {
  81
  82         return (ipl_cookie_t){._sr = ipl_sr_bits[ipl]};
  83 }
  84
  85 static inline int
  86 splraiseipl(ipl_cookie_t icookie)
  87 {
  88
  89         return _splraise(icookie._sr);
  90 }
  91
  92 #include <sys/spl.h>
  93
  94 struct evbmips_intrhand {
  95         LIST_ENTRY(evbmips_intrhand) ih_q;
  96         int (*ih_func)(void *);
  97         void *ih_arg;
  98         int ih_irq;
  99         int ih_ipl;
 100 };
 101
 102 #include <mips/softintr.h>
 103
 104 void    evbmips_intr_init(void);
 105 void    intr_init(void);
 106 void    evbmips_iointr(uint32_t, uint32_t, uint32_t, uint32_t);
 107 void    *evbmips_intr_establish(int, int (*)(void *), void *);
 108 void    evbmips_intr_disestablish(void *);
 109 #endif /* _KERNEL */
 110 #endif /* ! _EVBMIPS_INTR_H_ */