pexpert/i386/pe_interrupt.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 #include <pexpert/pexpert.h>
  23 #include <pexpert/protos.h>
  24 #include <machine/machine_routines.h>
  25 #include <i386/mp.h>
  26 #include <sys/kdebug.h>
  27
  28
  29 void PE_incoming_interrupt(int, void *);
  30
  31
  32 struct i386_interrupt_handler {
  33         IOInterruptHandler      handler;
  34         void                    *nub;
  35         void                    *target;
  36         void                    *refCon;
  37 };
  38
  39 typedef struct i386_interrupt_handler i386_interrupt_handler_t;
  40
  41 i386_interrupt_handler_t        PE_interrupt_handler;
  42
  43
  44
  45 void
  46 PE_incoming_interrupt(int interrupt, void *state)
  47 {
  48         i386_interrupt_handler_t        *vector;
  49
  50         KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) | DBG_FUNC_START,
  51                               0, ((unsigned int *)state)[7], 0, 0, 0);
  52
  53         vector = &PE_interrupt_handler;
  54
  55         if (!lapic_interrupt(interrupt, state)) {
  56                 vector->handler(vector->target, state, vector->nub, interrupt);
  57         }
  58
  59         KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) | DBG_FUNC_END,
  60            0, 0, 0, 0, 0);
  61 }
  62
  63 void PE_install_interrupt_handler(void *nub,
  64                                   __unused int source,
  65                                   void *target,
  66                                   IOInterruptHandler handler,
  67                                   void *refCon)
  68 {
  69         i386_interrupt_handler_t        *vector;
  70
  71         vector = &PE_interrupt_handler;
  72
  73         /*vector->source = source; IGNORED */
  74         vector->handler = handler;
  75         vector->nub = nub;
  76         vector->target = target;
  77         vector->refCon = refCon;
  78 }