pexpert/i386/pe_interrupt.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_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. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 #include <pexpert/pexpert.h>
  24 #include <pexpert/protos.h>
  25 #include <machine/machine_routines.h>
  26 #include <i386/mp.h>
  27 #include <sys/kdebug.h>
  28
  29
  30 void PE_incoming_interrupt(int, void *);
  31
  32
  33 struct i386_interrupt_handler {
  34         IOInterruptHandler      handler;
  35         void                    *nub;
  36         void                    *target;
  37         void                    *refCon;
  38 };
  39
  40 typedef struct i386_interrupt_handler i386_interrupt_handler_t;
  41
  42 i386_interrupt_handler_t        PE_interrupt_handler;
  43
  44
  45
  46 void
  47 PE_incoming_interrupt(int interrupt, void *state)
  48 {
  49         i386_interrupt_handler_t        *vector;
  50
  51         KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) | DBG_FUNC_START,
  52                               0, ((unsigned int *)state)[7], 0, 0, 0);
  53
  54         vector = &PE_interrupt_handler;
  55
  56         if (!lapic_interrupt(interrupt, state)) {
  57                 vector->handler(vector->target, state, vector->nub, interrupt);
  58         }
  59
  60         KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) | DBG_FUNC_END,
  61            0, 0, 0, 0, 0);
  62 }
  63
  64 void PE_install_interrupt_handler(void *nub,
  65                                   __unused int source,
  66                                   void *target,
  67                                   IOInterruptHandler handler,
  68                                   void *refCon)
  69 {
  70         i386_interrupt_handler_t        *vector;
  71
  72         vector = &PE_interrupt_handler;
  73
  74         /*vector->source = source; IGNORED */
  75         vector->handler = handler;
  76         vector->nub = nub;
  77         vector->target = target;
  78         vector->refCon = refCon;
  79 }