usr/src/uts/common/sys/avintr.h

   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 2014 Garrett D'Amore <garrett@damore.org>
  23  * Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved.
  24  */
  25
  26 #ifndef _SYS_AVINTR_H
  27 #define _SYS_AVINTR_H
  28
  29
  30 #include <sys/mutex.h>
  31 #include <sys/dditypes.h>
  32 #include <sys/ddi_intr.h>
  33
  34 #ifdef  __cplusplus
  35 extern "C" {
  36 #endif
  37
  38 /*
  39  * Period of autovector structures (add this in to get the next level).
  40  */
  41 #define MAXIPL  16
  42 #define INT_IPL(x) (x)
  43 #define AV_INT_SPURIOUS -1
  44
  45 typedef uint_t (*avfunc)(caddr_t, caddr_t);
  46
  47 struct autovec {
  48
  49         /*
  50          * Interrupt handler and argument to pass to it.
  51          */
  52
  53         struct autovec *av_link;        /* pointer to next on in chain */
  54         uint_t  (*av_vector)();
  55         caddr_t av_intarg1;
  56         caddr_t av_intarg2;
  57         uint64_t *av_ticksp;
  58         uint_t  av_prilevel;            /* priority level */
  59
  60         /*
  61          * Interrupt handle/id (like intrspec structure pointer) used to
  62          * identify a specific instance of interrupt handler in case we
  63          * have to remove the interrupt handler later.
  64          *
  65          */
  66         void    *av_intr_id;
  67         dev_info_t *av_dip;
  68         ushort_t        av_flags;       /* pending flags */
  69         struct autovec *av_ipl_link;    /* pointer to next on ipl chain */
  70 };
  71
  72 #define AV_PENTRY_VECTMASK      0xff    /* low 8 bit used for irqno */
  73 #define AV_PENTRY_PEND  0x100   /* pending hardware interrupt */
  74 #define AV_PENTRY_ONPROC        0x200   /* being serviced by CPU */
  75 #define AV_PENTRY_LEVEL 0x8000  /* level-triggered interrupt */
  76
  77 struct av_head {
  78         struct  autovec *avh_link;
  79         ushort_t        avh_hi_pri;
  80         ushort_t        avh_lo_pri;
  81 };
  82
  83 /* softing contains a bit field of software interrupts which are pending */
  84 struct softint {
  85         int st_pending;
  86 };
  87
  88 #ifdef _KERNEL
  89
  90 extern kmutex_t av_lock;
  91 extern ddi_softint_hdl_impl_t softlevel_hdl[];
  92 extern ddi_softint_hdl_impl_t softlevel1_hdl;
  93 extern int add_avintr(void *intr_id, int lvl, avfunc xxintr, char *name,
  94         int vect, caddr_t arg1, caddr_t arg2, uint64_t *, dev_info_t *);
  95 extern int add_nmintr(int lvl, avfunc nmintr, char *name, caddr_t arg);
  96 extern int add_avsoftintr(void *intr_id, int lvl, avfunc xxintr,
  97         char *name, caddr_t arg1, caddr_t arg2);
  98 extern int rem_avsoftintr(void *intr_id, int lvl, avfunc xxintr);
  99 extern int av_softint_movepri(void *intr_id, int old_lvl);
 100 extern void update_avsoftintr_args(void *intr_id, int lvl, caddr_t arg2);
 101 extern void rem_avintr(void *intr_id, int lvl, avfunc xxintr, int vect);
 102 extern void wait_till_seen(int ipl);
 103 extern uint_t softlevel1(caddr_t, caddr_t);
 104
 105 #endif  /* _KERNEL */
 106
 107 #ifdef  __cplusplus
 108 }
 109 #endif
 110
 111 #endif /* _SYS_AVINTR_H */