pexpert/i386/pe_interrupt.c

   1 /*
   2  * Copyright (c) 2000 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 #include <i386/mp.h>
  32 #include <sys/kdebug.h>
  33
  34
  35 void PE_incoming_interrupt(int, void *);
  36
  37
  38 struct i386_interrupt_handler {
  39         IOInterruptHandler      handler;
  40         void                    *nub;
  41         void                    *target;
  42         void                    *refCon;
  43 };
  44
  45 typedef struct i386_interrupt_handler i386_interrupt_handler_t;
  46
  47 i386_interrupt_handler_t        PE_interrupt_handler;
  48
  49
  50
  51 void
  52 PE_incoming_interrupt(int interrupt, void *state)
  53 {
  54         i386_interrupt_handler_t        *vector;
  55
  56         KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) | DBG_FUNC_START,
  57                               0, ((unsigned int *)state)[7], 0, 0, 0);
  58
  59         vector = &PE_interrupt_handler;
  60
  61         if (!lapic_interrupt(interrupt, state)) {
  62                 vector->handler(vector->target, state, vector->nub, interrupt);
  63         }
  64
  65         KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) | DBG_FUNC_END,
  66            0, 0, 0, 0, 0);
  67 }
  68
  69 void PE_install_interrupt_handler(void *nub,
  70                                   __unused int source,
  71                                   void *target,
  72                                   IOInterruptHandler handler,
  73                                   void *refCon)
  74 {
  75         i386_interrupt_handler_t        *vector;
  76
  77         vector = &PE_interrupt_handler;
  78
  79         /*vector->source = source; IGNORED */
  80         vector->handler = handler;
  81         vector->nub = nub;
  82         vector->target = target;
  83         vector->refCon = refCon;
  84 }