pexpert/i386/pe_interrupt.c

   1 /*
   2  * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 #include <pexpert/pexpert.h>
  29 #include <pexpert/protos.h>
  30 #include <machine/machine_routines.h>
  31
  32 #if CONFIG_DTRACE && DEVELOPMENT
  33 #include <mach/sdt.h>
  34 #endif
  35
  36 void PE_incoming_interrupt(int);
  37
  38
  39 struct i386_interrupt_handler {
  40         IOInterruptHandler      handler;
  41         void                    *nub;
  42         void                    *target;
  43         void                    *refCon;
  44 };
  45
  46 typedef struct i386_interrupt_handler i386_interrupt_handler_t;
  47
  48 i386_interrupt_handler_t        PE_interrupt_handler;
  49
  50
  51
  52 void
  53 PE_incoming_interrupt(int interrupt)
  54 {
  55         i386_interrupt_handler_t        *vector;
  56
  57         vector = &PE_interrupt_handler;
  58
  59 #if CONFIG_DTRACE && DEVELOPMENT
  60         DTRACE_INT5(interrupt_start, void *, vector->nub, int, 0,
  61                     void *, vector->target, IOInterruptHandler, vector->handler,
  62                     void *, vector->refCon);
  63 #endif
  64
  65         vector->handler(vector->target, NULL, vector->nub, interrupt);
  66
  67 #if CONFIG_DTRACE && DEVELOPMENT
  68         DTRACE_INT5(interrupt_complete, void *, vector->nub, int, 0,
  69                     void *, vector->target, IOInterruptHandler, vector->handler,
  70                     void *, vector->refCon);
  71 #endif
  72 }
  73
  74 void PE_install_interrupt_handler(void *nub,
  75                                   __unused int source,
  76                                   void *target,
  77                                   IOInterruptHandler handler,
  78                                   void *refCon)
  79 {
  80         i386_interrupt_handler_t        *vector;
  81
  82         vector = &PE_interrupt_handler;
  83
  84         /*vector->source = source; IGNORED */
  85         vector->handler = handler;
  86         vector->nub = nub;
  87         vector->target = target;
  88         vector->refCon = refCon;
  89 }