pexpert/i386/pe_interrupt.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 #include <pexpert/pexpert.h>
  26 #include <pexpert/protos.h>
  27 #include <machine/machine_routines.h>
  28 #include <sys/kdebug.h>
  29
  30 struct i386_interrupt_handler {
  31         IOInterruptHandler      handler;
  32         void                    *nub;
  33         void                    *target;
  34         void                    *refCon;
  35 };
  36
  37 typedef struct i386_interrupt_handler i386_interrupt_handler_t;
  38
  39 i386_interrupt_handler_t        PE_interrupt_handler;
  40
  41 void PE_platform_interrupt_initialize(void)
  42 {
  43 }
  44
  45 void
  46 PE_incoming_interrupt(int interrupt, void *eip)
  47 {
  48         boolean_t               save_int;
  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)eip, 0, 0, 0);
  53
  54         vector = &PE_interrupt_handler;
  55         save_int  = ml_set_interrupts_enabled(FALSE);
  56         vector->handler(vector->target, vector->refCon, vector->nub, interrupt);
  57         ml_set_interrupts_enabled(save_int);
  58
  59         KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) | DBG_FUNC_END,
  60            0, 0, 0, 0, 0);
  61
  62 }
  63
  64 void PE_install_interrupt_handler(void *nub, 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 }