sys/arch/algor/include/intr.h

   1 /*      $NetBSD: intr.h,v 1.12 2008/01/04 22:54:46 ad 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 _ALGOR_INTR_H_
  33 #define _ALGOR_INTR_H_
  34
  35 #include <sys/evcnt.h>
  36 #include <sys/queue.h>
  37
  38 #define IPL_NONE        0       /* disable only this interrupt */
  39 #define IPL_SOFTCLOCK   1       /* generic software interrupts (SI 0) */
  40 #define IPL_SOFTBIO     1       /* clock software interrupts (SI 0) */
  41 #define IPL_SOFTNET     2       /* network software interrupts (SI 1) */
  42 #define IPL_SOFTSERIAL  2       /* serial software interrupts (SI 1) */
  43 #define IPL_VM          3
  44 #define IPL_SCHED       4
  45 #define IPL_HIGH        4       /* disable all interrupts */
  46
  47 #define _IPL_N          5
  48
  49 #define _IPL_SI0_FIRST  IPL_SOFTCLOCK
  50 #define _IPL_SI0_LAST   IPL_SOFTBIO
  51
  52 #define _IPL_SI1_FIRST  IPL_SOFTNET
  53 #define _IPL_SI1_LAST   IPL_SOFTSERIAL
  54
  55 #define IST_UNUSABLE    -1      /* interrupt cannot be used */
  56 #define IST_NONE        0       /* none (dummy) */
  57 #define IST_PULSE       1       /* pulsed */
  58 #define IST_EDGE        2       /* edge-triggered */
  59 #define IST_LEVEL       3       /* level-triggered */
  60
  61 #ifdef  _KERNEL
  62
  63 #include <mips/locore.h>
  64
  65 extern const u_int32_t ipl_sr_bits[_IPL_N];
  66
  67 #define spl0()          (void) _spllower(0)
  68 #define splx(s)         (void) _splset(s)
  69
  70 typedef int ipl_t;
  71 typedef struct {
  72         ipl_t _sr;
  73 } ipl_cookie_t;
  74
  75 static inline ipl_cookie_t
  76 makeiplcookie(ipl_t ipl)
  77 {
  78
  79         return (ipl_cookie_t){._sr = ipl_sr_bits[ipl]};
  80 }
  81
  82 static inline int
  83 splraiseipl(ipl_cookie_t icookie)
  84 {
  85
  86         return _splraise(icookie._sr);
  87 }
  88
  89 #include <sys/spl.h>
  90
  91 struct algor_intrhand {
  92         LIST_ENTRY(algor_intrhand) ih_q;
  93         int (*ih_func)(void *);
  94         void *ih_arg;
  95         int ih_irq;             /* mostly for ISA */
  96         const void *ih_irqmap;
  97 };
  98
  99 #include <mips/softintr.h>
 100
 101 extern struct evcnt mips_int5_evcnt;
 102
 103 void    intr_init(void);
 104 void    *(*algor_intr_establish)(int, int (*)(void *), void *);
 105 void    (*algor_intr_disestablish)(void *);
 106
 107 #endif /* _KERNEL */
 108 #endif /* ! _ALGOR_INTR_H_ */