1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved.
  23  */
  24 
  25 #ifndef _SYS_AVINTR_H
  26 #define _SYS_AVINTR_H
  27 
  28 
  29 #include <sys/mutex.h>
  30 #include <sys/dditypes.h>
  31 #include <sys/ddi_intr.h>
  32 
  33 #ifdef  __cplusplus
  34 extern "C" {
  35 #endif
  36 
  37 /*
  38  * Period of autovector structures (add this in to get the next level).
  39  */
  40 #define MAXIPL  16
  41 #define INT_IPL(x) (x)
  42 #define AV_INT_SPURIOUS -1
  43 
  44 #ifdef  __STDC__
  45 typedef uint_t (*avfunc)(caddr_t, caddr_t);
  46 #else
  47 typedef uint_t (*avfunc)();
  48 #endif  /* __STDC__ */
  49 
  50 struct autovec {
  51 
  52         /*
  53          * Interrupt handler and argument to pass to it.
  54          */
  55 
  56         struct autovec *av_link;        /* pointer to next on in chain */
  57         uint_t  (*av_vector)();
  58         caddr_t av_intarg1;
  59         caddr_t av_intarg2;
  60         uint64_t *av_ticksp;
  61         uint_t  av_prilevel;            /* priority level */
  62 
  63         /*
  64          * Interrupt handle/id (like intrspec structure pointer) used to
  65          * identify a specific instance of interrupt handler in case we
  66          * have to remove the interrupt handler later.
  67          *
  68          */
  69         void    *av_intr_id;
  70         dev_info_t *av_dip;
  71         ushort_t        av_flags;       /* pending flags */
  72         struct autovec *av_ipl_link;    /* pointer to next on ipl chain */
  73 };
  74 
  75 #define AV_PENTRY_VECTMASK      0xff    /* low 8 bit used for irqno */
  76 #define AV_PENTRY_PEND  0x100   /* pending hardware interrupt */
  77 #define AV_PENTRY_ONPROC        0x200   /* being serviced by CPU */
  78 #define AV_PENTRY_LEVEL 0x8000  /* level-triggered interrupt */
  79 
  80 struct av_head {
  81         struct  autovec *avh_link;
  82         ushort_t        avh_hi_pri;
  83         ushort_t        avh_lo_pri;
  84 };
  85 
  86 /* softing contains a bit field of software interrupts which are pending */
  87 struct softint {
  88         int st_pending;
  89 };
  90 
  91 #ifdef _KERNEL
  92 
  93 extern kmutex_t av_lock;
  94 extern ddi_softint_hdl_impl_t softlevel_hdl[];
  95 extern ddi_softint_hdl_impl_t softlevel1_hdl;
  96 extern int add_avintr(void *intr_id, int lvl, avfunc xxintr, char *name,
  97         int vect, caddr_t arg1, caddr_t arg2, uint64_t *, dev_info_t *);
  98 extern int add_nmintr(int lvl, avfunc nmintr, char *name, caddr_t arg);
  99 extern int add_avsoftintr(void *intr_id, int lvl, avfunc xxintr,
 100         char *name, caddr_t arg1, caddr_t arg2);
 101 extern int rem_avsoftintr(void *intr_id, int lvl, avfunc xxintr);
 102 extern int av_softint_movepri(void *intr_id, int old_lvl);
 103 extern void update_avsoftintr_args(void *intr_id, int lvl, caddr_t arg2);
 104 extern void rem_avintr(void *intr_id, int lvl, avfunc xxintr, int vect);
 105 extern void wait_till_seen(int ipl);
 106 extern uint_t softlevel1(caddr_t, caddr_t);
 107 
 108 #endif  /* _KERNEL */
 109 
 110 #ifdef  __cplusplus
 111 }
 112 #endif
 113 
 114 #endif /* _SYS_AVINTR_H */