sys/arch/powerpc/include/intr.h

   1 /*      $NetBSD: intr.h,v 1.3 2007/12/03 15:34:12 ad Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2007 Michael Lorenz
   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 #include <sys/cdefs.h>
  30 __KERNEL_RCSID(0, "$NetBSD: intr.h,v 1.3 2007/12/03 15:34:12 ad Exp $");
  31
  32 #ifndef POWERPC_INTR_MACHDEP_H
  33 #define POWERPC_INTR_MACHDEP_H
  34
  35 void *intr_establish(int, int, int, int (*)(void *), void *);
  36 void intr_disestablish(void *);
  37 const char *intr_typename(int);
  38 void genppc_cpu_configure(void);
  39
  40 /* Interrupt priority `levels'. */
  41 #define IPL_NONE        0       /* nothing */
  42 #define IPL_SOFTCLOCK   1       /* timeouts */
  43 #define IPL_SOFTBIO     2       /* block I/O */
  44 #define IPL_SOFTNET     3       /* protocol stacks */
  45 #define IPL_SOFTSERIAL  4       /* serial */
  46 #define IPL_VM          5       /* memory allocation */
  47 #define IPL_SCHED       6
  48 #define IPL_HIGH        7       /* everything */
  49 #define NIPL            8
  50
  51 /* Interrupt sharing types. */
  52 #define IST_NONE        0       /* none */
  53 #define IST_PULSE       1       /* pulsed */
  54 #define IST_EDGE        2       /* edge-triggered */
  55 #define IST_LEVEL       3       /* level-triggered */
  56
  57 #ifndef _LOCORE
  58 /*
  59  * Interrupt handler chains.  intr_establish() inserts a handler into
  60  * the list.  The handler is called with its (single) argument.
  61  */
  62 struct intrhand {
  63         int     (*ih_fun)(void *);
  64         void    *ih_arg;
  65         struct  intrhand *ih_next;
  66         int     ih_level;
  67         int     ih_irq;
  68 };
  69
  70 int splraise(int);
  71 int spllower(int);
  72 void splx(int);
  73 void softintr(int);
  74
  75 extern int imask[];
  76
  77 /* Soft interrupt masks. */
  78 #define SIR_CLOCK       27
  79 #define SIR_BIO         28
  80 #define SIR_NET         29
  81 #define SIR_SERIAL      30
  82 #define SPL_CLOCK       31
  83
  84 #define setsoftclock()  softintr(SIR_CLOCK)
  85 #define setsoftbio()    softintr(SIR_BIO)
  86 #define setsoftnet()    softintr(SIR_NET)
  87 #define setsoftserial() softintr(SIR_SERIAL)
  88
  89 #define spl0()          spllower(0)
  90
  91 typedef int ipl_t;
  92 typedef struct {
  93         ipl_t _ipl;
  94 } ipl_cookie_t;
  95
  96 static inline ipl_cookie_t
  97 makeiplcookie(ipl_t ipl)
  98 {
  99
 100         return (ipl_cookie_t){._ipl = ipl};
 101 }
 102
 103 static inline int
 104 splraiseipl(ipl_cookie_t icookie)
 105 {
 106
 107         return splraise(imask[icookie._ipl]);
 108 }
 109
 110 #include <sys/spl.h>
 111
 112 #endif /* _LOCORE */
 113
 114 #endif /* POWERPC_INTR_MACHDEP_H */